• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Position detecting device (1) for detecting a position (PX, Y, Z) of a tool (2), wherein the position (PZ) of the tool (2) along a first spatial axis (Z) during movement of the machining tool (2) in the direction of the first Spatial axis (Z) by a contact of the tool (2) with an actuating element (3) of the position detection device (1) can be detected, wherein via the same actuating element (3) movement of the tool (2) in a transverse, preferably perpendicular, to the first spatial axis (Z) aligned second spatial axis (Y) is detectable.
    公开号:AT516008A1
    申请号:T526/2014
    申请日:2014-07-02
    公开日:2016-01-15
    发明作者:
    申请人:Steger Heinrich；
    IPC主号:
    专利说明:

    The invention relates to a position detecting device for detecting a position of a tool, wherein the position of the tool along a first spatial axis when moving the tool in the direction of the first spatial axis is detected by a contact of the tool with an actuating element of the position detecting device. Moreover, the invention relates to a processing device, in particular for dental workpieces, with a tool, at least one drive device for moving the tool and such a position detecting device. Furthermore, the invention relates to a method for detecting a position of a tool with the step of moving the tool in the direction of a first spatial axis, wherein contact of the tool with an actuating element of the position detection device detects the position of the tool along the first spatial axis
    When using tools, e.g. With a dental CNC machine, it is always important to know the position of the tool as precisely as possible. Above all, to ensure an automatic process, the position of the Werkzeugsbzw. the tool can be detected and the control unit can be supplied for the entire system.
    An example of a surveying method is disclosed in DE 199 24 511 A1, according to which, in the case of a handling device, the position determination is carried out via reference data. For this purpose, image sensors, in particular CCD cameras, are used. These cameras are usually very expensive and, moreover, this very optical process may be inaccurate.
    Furthermore, DE 60 2005 003 012 T2 shows a method for the automatic calibration of the tools in a lathe. Although the position determination is made mechanically, but not via an actuating mechanism, but via a test piece, which is subsequently measured. Thereafter, these measurement data are analyzed and position errors along the axial directions are read out due to the deviations of the cut geometry from the geometry that should be cut. Subsequently, the
    Machine are automatically controlled to compensate for these read errors. This measurement by means of a test piece is very complicated and can take a long time.
    Applicant has already used a generic position detecting device with an actuator (for example in the form of a touch switch). The tool can directly touch this actuator, so that the position of the tool is detected in a space axis. In order not only to detect the position of the tool in this spatial axis or space direction, several such touch switches may be provided. However, this is quite expensive and expensive.
    The object of the present invention is therefore to provide a prior art or simplified position detecting device. In particular, the position detection of the tool in more than one direction of space should be possible in a simple and favorable manner.
    This is achieved by a position detecting device having the features of claim 1. Accordingly, it is provided in a position detection device according to the invention that, via the same actuating element, a movement of the tool can be detected in a second, preferably perpendicular, space axis oriented second spatial axis. This eliminates the need for multiple actuators. The one actuating element is sufficient to detect the position of the tool in at least two spatial directions. In order to detect any spatial position, it is particularly preferably provided that movement of the tool over the same actuating element is detectable in a third spatial axis oriented transversely, preferably at right angles, to the first spatial axis and different from the second spatial axis.
    In principle, the signals detected by the actuating element can be transmitted to a separate control or regulation unit for the position detection device. However, for a simple and multifunctional application, it is provided that the position detection device itself has a calculation unit. It is particularly preferably achieved by the calculation unit that actuating data of the actuating element can be mathematically linked to movement data of the tool, and the spatial position of the tool can be calculated by the calculation unit from these actuating data and movement data. That is, for the position detection, the knowledge about the operation of the one actuator is linked with the knowledge of the movement of the tool when actuated. As a result, not only the linear, but rather the spatial position of the tool can be detected via one and the same actuating element.
    In principle, the embodiment of the information transfer of the position of the tool to the actuating element is arbitrary. In the following, two embodiments will be explained in more detail, wherein the first embodiment shows a mechanical solution and the second embodiment describes a procedural solution.
    According to the first, mechanical embodiment, it is accordingly provided that the position detection device has a transmission mechanism, wherein the position of the tool along the second spatial axis when moving the tool in the direction of the second spatial axis from the tool via the transmission mechanism to the actuating element is transferable. It must be provided so no second actuator. Rather, by a clever arrangement of a transmission mechanism, the movement of the tool into the second spatial axis is transferred to the already existing actuator. Thus, in this mechanical solution, only a single actuator is required to detect the position of the tool in at least two spatial directions.
    Preferably, it is further provided that the position of the tool along a third spatial axis when moving the tool in the direction of the third spatial axis of the tool on the transmission mechanism on the
    Actuator is transferable. Thus, any spatial position of the tool can be transmitted to the one actuator by this transmission mechanism.
    Basically, the individual spatial axes can be at different angles to each other. It is also possible for only one of the spatial axes to be at a right-angled angle to another, while the third spatial axis has an angle deviating from 90 ° to at least one of the other two spatial axes. Preferably, however, it is provided that the first space axis, the second space axis and the third space axis are aligned orthogonal to each other.
    In principle, it is possible that the transmission mechanism is designed only for example for the second spatial axis. It could thus be provided for the first spatial axis and for the third spatial axis each have a separate actuator. However, it is particularly preferred that the position detection device has only one actuating element.
    According to a preferred embodiment, it is further provided that the position detection device comprises a touch switch, wherein the actuating element is part of the touch switch. Thus, the actuator forms the contact surface either directly for the tool or indirectly for the transfer mechanism. By moving the actuator, an electrical circuit is terminated in the touch switch, thereby relaying a corresponding signal. Specifically, the touch switch transmits actuation data to a computing unit. Instead of the touch switch, it is also possible to use other metrological sensors which have the required accuracy (for example, proximity switches on a capacitive or inductive basis or else with light-working sensors or also piezoin-assisted detection devices).
    As such, the exact configuration of the transfer mechanism is optional as long as the movement of the tool along the second or third axis of space is transferred to the actuator. However, it is preferably provided that the transmission mechanism has at least one detection lever for contact with the tool, at least one transmission lever connected to the detection lever and a contact element connected to the transmission lever for contact with the actuating element. Furthermore, the position detection device may comprise a housing, wherein the transmission lever of the transmission mechanism is movable, preferably pivotable, mounted on the housing. The motion transmission can take place in the form of a 1: 1 translation. However, by a corresponding displacement of the detection lever or of the contact element, it can also be achieved that the transmission mechanism reacts less sensitively or sensitively.
    Protection is also desired for a processing device for workpieces, in particular dental workpieces, with a tool, at least one drive device for carrying out a relative movement between the tool and the workpiece and a position detection device according to the invention. Especially with dental workpieces it is of great importance to achieve a high degree of precision in machining or milling. By means of the present invention it is possible to determine the exact position of the tool with respect to the processing area of the dental tool before machining and to re-check the position after processing.
    It is possible that the position data obtained by the position detecting means are displayed, whereby an operator can make corresponding settings. Preferably, however, it is provided that the entire processing device functions as automatically as possible. Therefore, it is preferably provided that the movement data is transmitted from the drive device to the calculation unit of the position detection device. However, for even easier handling and integration into previously existing systems, it is preferably provided that the calculation unit is signal-connected to a control or regulating unit of the processing apparatus. Preferably, the calculation unit of the position detection device is part of the control or regulating unit.
    Relative movement between the workpiece and tool may be by one or more drive devices. The at least one drive device preferably has an electric motor. It can be provided on the one hand, that a second drive device has a two- or three-axis drive for moving the tool along at least two spatial axes. This second drive device, via the two- or three-axis drive, moves the tool along the two or three linear spatial axes. Furthermore, it is provided that this second drive device has a rotary drive for the rotatable driving tool. This rotary drive is mainly used for direct operation of the milling cutter.
    On the other hand, it is preferably provided that the processing device has a holding device for the dental workpiece that can be moved by a first drive device. Here it can be provided that the dental workpiece is movable about a horizontal axis and about two axes of rotation via this first drive device. In this case, a separate electric motor can be provided for the movement around each of these three axes. It is particularly preferable for the holding device or the holder of the holding device on the housing of this holding device to be mounted so as to be movable with the holding device. Thus, the tool can be moved both in the direction of the dental workpiece and in the direction of the position detecting device.
    In principle, the axes provided for the relative movement can be arranged as desired, as long as there is sufficient relative movement between the tool and the dental workpiece. This relative movement should be possible at least in two degrees of freedom. Preferably, a relative movement in five degrees of freedom is possible. More preferably, these five degrees of freedom are formed by three linear axes and two axes of rotation. All of these axes can move only the tool or only the dental workpiece. Preferably, a hybrid mold is provided, in which the tool is movable along two linear axes and the dental workpiece along a linear axis and about the two axes of rotation (see also exemplary embodiment according to FIG. 1). Alternatively, it is just as possible that the dental workpiece is "only" about the two
    Rotation axes is movable while the tool is movable along all three linear axes. Other hybrid forms are of course possible. Preferably, the movements around all five axes are concretely triggered by a respective electric motor, which is responsible for the several drive devices.
    However, not only the actual position of the tool can be detected with the position detection device according to the invention. Rather, other data (such as an encoding) are also detectable. For example, it is possible for different shades to be mounted on the shank of the tool, depending on the type of tool, so as to enable identification of the tool used. Namely, by means of the data obtained by the transmission mechanism, these different gradations can be detected. With this system, it is also possible to control a defect of the tool (e.g., a cutter breakage). In addition, it is possible that the cutting of the tool can also be controlled via the position detecting means. For example, if the tool is rotated very slowly, via the transfer mechanism, the actuator or touch switch may record a motion curve of the cutting history, which is then compared to an optimal cutting history. Furthermore, this can also be used for concentricity measurement.
    Preferred variants for the second, control-technical embodiment for the embodiment of the information transfer of the position of the machining tool to the actuating element are recited in claims 14 to 18. Accordingly, it is especially important that the control unit has a mode of movement on the one hand, and a detection mode on the other hand, both of which can be applied simultaneously. Above all, in the detection mode, the exact spatial position of the tool is derived from different movements of the tool along the actuator. calculated. In particular, the position of the tool is detected when contact aborts between tool and actuator. The spatial position of the tool can be calculated via the control or regulation unit or via the calculation unit from three-way contact aborts with different movements of the tool. The acquisition mode is preferably based on an algorithm stored in a memory.
    The object of the present invention is also achieved by a method according to claim 23 based on the above-described control engineering embodiment. Thus, according to the invention, the steps of moving the tool into a first, preferably right-angled, first-axis-aligned, preferably second-axis, first direction and detecting this movement via the same actuator as when detecting the position of the tool along the first axis of space.
    In principle, it can indeed be provided that - as in the first embodiment - the tool directly contacts the actuating element only when moving in the direction of the first spatial axis. According to the second-procedural embodiment, the tool preferably also directly contacts the actuating element when moving in the first direction or in the second spatial axis.
    Specifically, the method according to the second embodiment is such that the tool contacts and operates the actuator during movement in the first direction, detecting a position of the tool along the first direction as the actuation of the actuator progresses upon movement of the machining tool in the first direction the tool stops. That is, the transverse movement made with the actuator actuated, and in particular the position at the end of actuation of the actuator, indicates the position of the tool in the direction of this transverse movement. Thus, in this embodiment, too, only one actuator is sufficient to detect at least one additional linear position of the tool.
    In order to be able to obtain not only the information about an additional linear position but to be able to infer the spatial position of the tool, it is preferred to move the tool in a second direction directed transversely, preferably at right angles to the first spatial axis, to the first direction, wherein the Tool contacted and operated during this movement, the actuating element, wherein a position of the tool is detected along the second direction as soon as the movement of the tool in the second direction, the actuation of the actuating element stops by the tool.
    Particularly in order to detect or generate the geometrically necessary points for determining the center of the, preferably circular, actuating element, the tool should be moved at least three times in different directions upon actuation of the actuating element. Preferably, therefore, the movement of the tool is provided in a third direction, transversely, preferably at right angles, to the first spatial axis, the first and second directions, the tool contacting and actuating the actuator during this movement, detecting a position of the tool along the third direction, as soon as possible the movement of the tool in the third direction stops the actuation of the actuator by the tool.
    The specific detection of the spatial position preferably takes place in that, by a calculation unit, the detected positions along the first spatial axis and along the first, second and third directions are mathematically linked to motion data of a drive device of the tool and the calculation unit calculates the spatial position of the tool.
    Preferably, for the accurate and repeatable actuation of the actuator, it is provided that the first, second and third directions and the tool contactable surface of the actuator lie in the same plane aligned perpendicular to the first spatial axis. Basically, it should not be excluded that the tool when starting on the
    Actuator is moved in different, still actuated levels. Also, the first, second and third directions need not be on the same plane.
    Further details and advantages of the present invention will become more apparent from the description of the figures and the reference to the embodiments set forth below. Show:
    1 shows a processing device,
    2 a position detection device with transmission mechanism,
    3 to 7 various views of the position detection device,
    8 to 13 different positions of the position detecting device, Fig. 14 and 15 are perspective views of the position detecting device in different positions,
    16 to 20 schematically show the procedural embodiment of the position detection with an actuating element,
    FIGS. 21 to 24 are various views of a combination of the two embodiments and FIGS
    Fig. 25 is a plan view of the actuator with the various
    Cross movement.
    FIG. 1 shows a processing device 11 for processing a dental workpiece 12 (only shown). This dental workpiece 12 is held in the holding device 17, this holding device 17 being mounted so as to be movable relative to the housing 22 of the processing device 11 in a horizontal direction about two axes of rotation and the spatial axis X by a first drive device 13a indicated by dashed lines. Specifically, a separate electric motor is provided for each of these axes. The holding device 17 has a holding frame 25 (outer ring) mounted relative to the housing 22, preferably linearly in the X direction, movable C-shaped carrier 26 and a carrier 26 rotatably (first axis of rotation). Preferably, in this holding frame 25 is still a not-shown inner ring (second axis of rotation) movably mounted on which the
    Dental workpiece 12 is held. The position detection device 1 is arranged on the holding device 17, in particular on the carrier 26 thereof.
    In addition, the processing device 11 has a second drive device 13b for moving the tool 2. On the one hand, the second drive device 13b comprises a two-axis drive 15 for moving the tool 2 in the spatial axes Y and Z. On the other hand, the second drive device 13b also has a rotary drive 16 for rotationally driving the tool 2 (in particular the machining tool in the form of a drill, milling cutter or grinder ) on. Here too, a separate electric motor is concretely provided for each of these axes (Y, Z and axis of rotation).
    Furthermore, a central control unit 14 is provided which has the calculation unit 6 and which can be operated in at least the two operating modes of the movement mode and the acquisition mode. From the drive devices 13a and 13b, corresponding movement data Di3 are transmitted to the control or regulation unit 14 or to the calculation unit 6. In addition, data D5 is also transmitted by the position detection device 1 to the calculation unit 6. From the calculation unit 6, the received data D5 and Di3 are combined so that the spatial position Px, YiZ of the tool 2 can be calculated. Optionally, these data D5 may also be displayed on an output unit. Above all, these position data Ρχ, γ, ζ serve the subsequent processing of the dental workpiece 12 by the tool 2 designed as a machining tool. The tool 2 can also be designed as an inking device. The tool 2 can also be designed as a button, which is used only for the position determination.
    2, the position detection device 1 is shown in detail. Although the position detecting device 1 may be fastened to the housing 22 via the holding arm 23, the position detecting device 1 is preferably held or fastened to the carrier 26 of the holding device 17. The holding frame 25 is rotatably mounted on the Träger26. Together, the carrier 26 and the holding frame 25 are movable in the X direction. Furthermore, the position detection unit 1 has an on
    Holding arm 23 arranged base plate 24, which forms the contact switch 5 together with the operatively arranged thereon actuating element 3. This base plate 24, in turn, is attached via the housing 10 to the transmission mechanism 4. In this case, the housing 10 has a recess 20, through which the touch switch 5 arranged on the base plate 24 protrudes. The housing 10 has a counterbore, the housing 24 of the contact switch 5 has a through hole. Thus, the touch switch 5 is clamped between the holder arm 23 and the transfer mechanism 4. On the housing 10, the transmission lever 8x and 8y are pivotally mounted. On the transmission levers 8x and 8y, a detection lever 7x and 7y and a contact element 9x and 9y are respectively arranged. Furthermore, the signal line 18 leading away from the touch switch 5 is shown in FIG. In addition, the tool 2 is shown in its position Ρχ, γ, ζ. The tool 2 is held on the rotary drive 16 of the drive device 13. Transmission lever 8x, detection lever 7x and contact element 9x can also consist of one part and thus be integral.
    Various views of the position detecting device 1 bzw.des transmission mechanism 4 are shown in Figs. In Fig. 3 is well the pivot axis 21ydes transmission lever 8y recognizable. In Fig. 5, the attachment means 19 for attaching the housing 10 to the support arm 23 can be seen. In Fig. 4, the fastening means 19 are also clearly visible. In addition, the recess 20 and the detection levers 7y and 7y and the contact elements 9x and 9y are shown. In general, Fig. 5 shows a bottom view of the transmission mechanism 4, Fig. 7 a side view of the transmission mechanism 4 and Fig. 6 a view the transmission mechanism 4 from the back.
    Referring to Fig. 8, the tool 2 is not yet in contact with the operating member 3 of the position detecting device 1. By moving the tool 2 in the Z direction, it passes Tool 2 in the position Pz shown in FIG. 9, whereby on the actuating element 3 of the contact switch 5 is pressed. Thereby, an electric circuit is closed and corresponding data D5 are transmitted to the calculation unit 6 via the signal line 18.
    According to the present invention, the position detecting device 1 can detect not only the position Pz of the tool in the direction of the first space axis Z but also the position PY of the tool 2 along the second space axis Y, as shown in FIGS. As shown in Fig. 10, the tool 2 is already in contact with the detection lever 7y of the transmission mechanism 4. However, the transmission lever 8y is not yet pivoted by the angle a. If, however, the tool 2 is moved in the direction of the second spatial axis Y, as shown in FIG. 11, the transmission lever 8y is pivoted about the pivot axis 21y by the pivot angle c via the detection lever 7y. As a result, the contact member 9y, which is only slightly visible, presses the operating member 3, whereby the touch switch 5 transmits corresponding data D5. In comparison between FIGS. 10 and 11, it will be understood that the transmission lever 8x, although not actively actuated, also moves with the actuating element 3. This is because the contact element 9x (dowel pin) abuts and is attracted to the actuator 3 by magnetic force to prevent foreign particles from being able to settle between the mating surfaces. For this purpose, a magnet is integrated into the detection levers 8x and 8yeach, which are attracted by the respective magnets in the housing 10. Of course, this restraint system could also be realized differently, for example via spring force.
    In the same way, the position Px of the tool 2 is also detected in or along the third spatial axis X. In FIG. 12, it can be seen how the tool 2 already contacts the detection lever 7x of the transmission mechanism 4. By moving the tool 2 in the direction of the third spatial axis X, the transmission lever 8x is pivoted about the pivot axis 21 (not shown) by the angle β (see FIG. 13). Here, too, the transmission lever 8y is moved by magnetic force.
    In Figs. 14 and 15, the position detecting device 1 is again shown in perspective, wherein in Fig. 14, the detection of the position Px of the tool 2 via the detection lever 7x, the transmission lever 8x and the contact element 9x takes place on the actuator 3 of the touch switch 5. On the other hand, in Fig. 15, the detection of the position Ργ of the tool 2 along the second space axis Y via the detection lever 7y, the transmission lever 8y, and the contact element 9y is applied to the actuator 3 of the touch switch 5. The repeatability of this position detection device 1 depends solely on the repeatability of the touch switch 5. Specifically, this is 0.0005 mm. If you look for similarly accurate touch switches, you have to expect very high prices, whereas the transmission mechanism 4 costs only a fraction.
    In the case of the second and procedural embodiments shown in FIGS. 16 to 25, the same preferred variants apply, if appropriate, as in the first and mechanical embodiments according to FIGS. 1 to 15. The difference lies essentially in the fact that no transmission mechanism 4 is needed but the same target is reached procedurally becomes.
    In Fig. 16, accordingly, the touch switch is shown with the actuating element 3 schematically. The touch switch 5 is signal-technically (for transmitting actuating data D5) connected to the calculation unit 6. The tool 2 is currently in the starting position, but does not contact the actuating element 3 yet. Movement data D13 of the tool 2 are also transmitted to the calculation unit 6.
    According to FIG. 17, the tool 2 has moved further in the direction of the first spatial axis Z. Although the tool 2 already contacts the actuating element 3 in this position Pz, it is not yet actuated.
    This is illustrated in Fig. 18, however, by further moving the tool 2 in the Z direction, the actuator 3 is actuated, whereby an unillustrated electrical circuit in the contact switch 5 closes. As well as the position detection in the Z direction in previously known systems.
    In order to obtain additional information about the position P of the tool 2, the tool is shown in FIG. 19 in actuated actuator 3 in the transverse, in particular perpendicular, aligned to the Z-direction directions a, bbzw. c moves. When the tool 2 is moved in the first direction a so far that the contact between the tool 2 and the actuator 3 stops, the actuator 2 returns to an unactuated state (seeVergleich between Fig. 19 and 20). The movement data D13 existing at the time of this operation state change gives the position Py of the tool 2 along the first direction a. The same applies to the operating state change when the tool 2 is moved in the second direction b, from which the position Px is derived along the second direction b and in the third direction c, from which the position ΡχΥ is calculated along the third direction c (see also Fig. 25 ). These first, second and third directions a, b, c and the contacting of the tool 2 surface of the actuating element 3 lie in the same, perpendicular to the first space axis Z aligned plane E (see FIG. 19), which in turn a spanned by the spatial axes X and Y surface equivalent. FIGS. 21 to 24 show various views of a position detection device 1 in which both embodiments are combined. Specifically, the tool 2 just contacts and actuates the actuator 3 (see Fig. 22). Also from the views according to FIGS. 23 and 24, this "edge position" of the tool 2 can be seen.
    In particular, the second embodiment is illustrated in Fig. 25, wherein it can be seen that the movement of the tool 2 in each direction a, b and c respectively detects different positions Px, PY and Ρχγ, which are then translated to the actual spatial position Px, Y> z of the tool 2 are mathematically linked. The exact orientation of the directions a, b and c need not coincide with the spatial axes X and Y. However, these directions a, b and c are preferably aligned parallel to a surface spanned by the spatial axes X and Y.
    Thus, the present invention provides a position detecting device 1 which enables detection of the position PX, Y, Z of the tool 2 in all three spatial directions X, Y and Z mechanically or procedurally with only a single touch switch 5.
    LIST OF REFERENCES: 1 position detecting device 2 tool 3 actuating element 4 transmission mechanism 5 touch switch 6 calculation unit 7x, 7y detection lever 8x, 8y transmission lever 9y, 9y contact element 10 housing 11 processing device 12 dental workpiece 13a first drive device 13b second drive device 14 control unit 15 two- or three-axis Drive 16 rotary drive 17 holding device 18 signal line 19 fastening means 20 opening 21 x, 21 y pivot axis 22 housing 23 holding arm 24 base plate 25 holding frame 26 carrier P position Z first spatial axis Y second spatial axis X third spatial axis D data a first direction b second direction c third Direction E level
    权利要求:
    Claims (29)
    [1]
    A position detecting device (1) for detecting a position (Ρχ, γ, ζ) of a tool (2), wherein the position (Pz) of the tool (2) along a first space axis (Z) when moving the machining tool (2) in the direction of the first Spatial axis (Z) by a contact of the tool (2) with an actuating element (3) of the position detecting means (1) is detectable, characterized in that on the same actuating element (3) movement of the tool (2) in a transversely, preferably at right angles first spatial axis (Z) aligned second spatial axis (Y) is detectable.
    [2]
    2. Position detecting device according to claim 1, characterized in that via the same actuating element (3) a movement of the tool (2) in a transversely, preferably at right angles, to the first spatial axis (Z) andunterschiedlich to the second spatial axis (Y) aligned third spatial axis (X) is detectable.
    [3]
    3. Position detecting device according to claim 1 or 2, characterized by a calculation unit (6), wherein actuating data (D5) of the actuating element (3) with movement data (Di3) of the tool (2) are mathematically linked and by the calculation unit (6) from this operation data (D5) and movement data (D13) the spatial position (Ρχ, γ, ζ) of the tool (2) can be calculated.
    [4]
    Position detecting device according to any one of claims 1 to 3, characterized in that the position detecting means (1) comprises a transmission mechanism (4), the position (PY) of the tool (2) being along the second spatial axis (Y) as the tool (2) moves in the direction the second spatial axis (Y) of the tool (2) via the transmission mechanism (4) on the actuating element (3) is transferable.
    [5]
    Position detecting device according to claim 4, characterized in that the position (Px) of the tool (2) along the third spatial axis (X) during movement of the tool (2) towards the third spatial axis (X) of the tool (2) via the transmission mechanism (4) is transferable to the actuating element (3).
    [6]
    6. Position detecting device according to one of claims 1 to 5, characterized in that the first spatial axis (Z), the second spatial axis (Y) and the third spatial axis (X) are aligned mutually orthogonal.
    [7]
    Position detecting device according to any one of Claims 1 to 6, characterized in that the position detecting device (1) comprises a touch switch (5), the actuating element (3) being part of the contact switch (5).
    [8]
    8. Position detecting device according to claim 7, characterized in that from the touch switch (5) the actuation data (D5) to the calculation unit (6) can be transmitted.
    [9]
    Position detecting device according to any one of claims 4 to 8, characterized in that the transmission mechanism (4) comprises at least one detection lever (7x, 7y) for contact with the tool (2), at least one transmission lever (8x, 7x, 7y) connected to the detection lever (7x, 7y) 8y) and a contact element (9x, 9y) connected to the transmission lever (8x, 8y) for contact with the actuating element (3).
    [10]
    10. Position detecting device according to claim 9, characterized by a housing (10), wherein the transmission lever (8x, 8y) of the transmission mechanism (4) movable, preferably pivotally mounted on the housing (10).
    [11]
    11. Processing device (11) for workpieces, in particular for dental workpieces (12), comprising - a tool (2), in particular a machining tool or a stylus, - at least one drive device (13a, 13b) for performing a relative movement between tool (2) and workpiece and a position detection device (1) according to one of claims 1 to 10.
    [12]
    12. Processing device according to claim 11, characterized in that of the at least one drive device (13a, 13b), the movement data (Di3) of the tool (2) to the calculation unit (6) can be transmitted.
    [13]
    13. Processing device according to claim 11 or 12, characterized in that the calculation unit (6) is signal-technically connected to a control unit (14) of the processing device (11).
    [14]
    A processing apparatus according to claim 13, characterized in that the control unit (14) has a movement mode for moving the tool (2) and a detection mode for detecting this movement, wherein in the detection mode, moving the tool (2) in the direction of the first space axis (Z ) by a contact of the tool (2) with the Betätigungsseiement (3) of the position detecting means (1) the position (Pz) of the tool (2) along the first spatial axis (Z) is detectable and in the detection mode when moving the tool (2) into a transverse , preferably at right angles, to the first spatial axis (Z) oriented first direction (a) this movement is detectable via the same actuating element (3) as when detecting the position (Pz) of the tool (2) along the first spatial axis (Z).
    [15]
    Machining apparatus according to claim 14, characterized in that in the detection mode the tool (2) contacts and actuates the actuator (3) during movement in the first direction (a), a position (Ργ) being detected by the control unit (14) in the detection mode ) of the tool (2) is detectable along the first direction (a) when, upon movement of the tool (2) in the first direction (a), the actuation of the actuating element (3) by the tool (2) ceases.
    [16]
    16. A processing apparatus according to claim 14 or 15, characterized in that in the detection mode when moving the tool (2) in a transversely, preferably at right angles, to the first spatial axis (Z), the first direction (a) differently oriented second direction (b) the Tool (2) contacts and actuates the actuating element (3), wherein a position (Px) of the tool (2) along the second direction (b) is detectable by the control or regulating unit (14) in the detection mode, if during the movement of the tool (2 ) in the second direction (b) the actuation of the actuating element (3) by the tool (2) stops.
    [17]
    Machining device according to claim 16, characterized in that in the detection mode, when moving the tool (2) in a transversely, preferably at right angles, to the first spatial axis (Z), to the first and second direction differently oriented third direction (c) the tool (2) Actuator (3) contacted and actuated, wherein of the Steuer¬oder control unit (14) in the detection mode, a position (Ρχγ) of the tool (2) along the third direction (c) is detected when moving the tool (2) in the third Direction (c) the actuation of the actuating element (3) by the tool (2) stops.
    [18]
    Machining apparatus according to claim 17, characterized in that, in the detection mode of the control unit (14) and / or of the calculation unit (6), the detected positions (Px, PY, PXY) are along the first space axis (Z) and along the first, second and third directions (a, b, c) with movement data (D13) of the at least one drive device (13a, 13b) of the tool (2) are mathematically linked and by the control unit (14) and / or by the calculation unit (6 ) the spatial position (Px, Y, z) of the tool (2) can be calculated.
    [19]
    Machining apparatus according to any one of claims 11 to 18, characterized in that a plurality of driving devices (13a, 13b) are provided.
    [20]
    Machining apparatus according to claim 19, characterized in that one of the plurality of drive devices (13a, 13b), preferably a first drive device (13a), has a holding device (17) for the dental workpiece (12), preferably in the horizontal direction and around two axes of rotation.
    [21]
    Machining device according to claim 19 or 20, characterized in that one of the plurality of drive devices (13a, 13b), preferably a second drive device (13b), comprises a rotary drive (16) for rotatably driving the tool designed as a machining tool, preferably a drill, cutter or grinder (2).
    [22]
    22. Processing device according to one of claims 19 to 21, characterized in that one of the plurality of drive devices (13a, 13b), preferably the second drive device (13b), at least one two-axis drive (15) for moving the tool (2) along at least two spatial axes (Y, Z).
    [23]
    23. A method for detecting a position (Ρχ, γ, ζ) of a tool (2), in particular with a position detection device (1) according to one of claims 1 to 10, with the step - moving the tool (2) in the direction of a first spatial axis ( Z), wherein by contact of the tool (2) with an actuating element (3) of the position detecting device (1), the position (Pz) of the tool (2) along the first spatial axis (Z) is detected, characterized by the steps of: - moving the Tool (2) in a transversely, preferably perpendicular, to the first spatial axis (Z) aligned first direction (a) and - detecting this movement via the same actuating element (3) as upon detection of the position (Pz) of the tool (2) along the first spatial axis (Z ).
    [24]
    24. The method according to claim 23, characterized in that the tool (2) when moving in the first direction (a), the actuating element (3) directly contacted.
    [25]
    A method according to claim 23 or 24, characterized in that the tool (2) during movement in the first direction (a) contacts and actuates the actuating element (3), a position (Ργ) of the tool (2) along the first direction ( a) is detected as soon as upon movement of the tool (2) in the first direction (a) the actuation of the actuating element (3) by the tool (2) stops.
    [26]
    A method according to any one of claims 23 to 25, characterized by moving the tool (2) into a transverse, preferably right-angled, first spatial axis (Z), differently oriented to the first direction (a), second direction (b), the tool (2) during this movement the actuating element (3) is contacted and actuated, whereby a position (Ρχ) of the tool (2) along the second direction (b) is detected as soon as the movement of the actuating element (2) in the second direction (b) 3) by the tool (2) stops.
    [27]
    27. The method according to claim 26, characterized by moving the tool (2) in a transversely, preferably at right angles, to the first spatial axis (Z), the first and second direction differently oriented third direction (c), wherein the tool (2) during this movement the actuating element (3) is contacted and actuated, whereby a position (Ρχγ) of the tool (2) along the third direction (c) is detected as soon as the actuation of the actuating element (3 ) stops by the tool (2).
    [28]
    A method according to claim 27, characterized in that by a calculation unit (6) the detected positions (Px, Ργ, Ρχγ) along the first space axis (Z) and along the first, second and third directions (a, b, c) with movement data (Di3) of at least one drive device (13a, 13b) of the tool (2) are computationally linked and the spatial unit (Ρχ, γ, ζ) of the tool (2) is calculated by the calculation unit (6).
    [29]
    29. The method according to claim 27 or 28, characterized in that the first, second and third directions (a, b, c) and the tool (2) contactable surface of the actuating element (3) in the same, perpendicular to the first spatial axis (Z) aligned level (E) lie.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2283311B1|2011-08-24|Measuring method for an articulated-arm coordinate measuring machine
    DE202015004771U1|2015-07-22|Position detecting means for detecting a position of a tool
    DE102018112820B4|2022-02-03|Teach position correction device and teach position correction method
    DE102011100467B3|2012-07-05|Measuring head for a coordinate measuring machine for determining spatial coordinates on a measuring object
    EP2569592B1|2018-01-10|Probe for a coordinate measuring device for determining the space coordinates on a measurement object
    WO2003095125A2|2003-11-20|Production device, especially a bending press, and method for operating said production device
    DE102015205567A1|2016-09-29|Calibration of a rotating device attached to a moving part of a CMM
    EP0006160B1|1982-06-30|Device for the reproduceable attachment of two mechanical elements
    DE102015226387A1|2017-06-22|Method for carrying out measurements with a test element in a coordinate measuring machine or a machine tool
    EP2596318B1|2014-11-12|Detecting the coupling of parts to a machine
    WO2017059992A1|2017-04-13|Sensor apparatus and robot arrangement having the sensor apparatus
    EP0729005B1|1998-08-05|Measuring device for checking the geometrie and dynamic precision of NC machining tools and industrial robots
    EP3314203B1|2019-08-07|Adapter element for assembling a rotational apparatus in the measurement space of a coordinate measuring machine
    WO2016015775A1|2016-02-04|Scanning head for a coordinate measuring device
    EP2165784B1|2011-06-15|Device and method for automatically centring die holders of a stamping machine
    DE102015208803B3|2016-09-15|Turntable for a coordinate measuring machine
    DE10048952B4|2008-08-21|Method and device for recording unknown spatial points in a work cell of a robot
    DE4307899C2|1996-11-21|Device for bending test specimens to be tested for strength
    WO2015036486A1|2015-03-19|Tool presetting apparatus
    DE102013102352A1|2013-11-07|Apparatus for determining envelope contour or surface of workpiece such as drill, has V-shaped groove in which some portions of workpiece are made to rest, and sensor for determining rotational position of workpiece on support surface
    EP3507568B1|2021-05-26|System and method for tactile measurement of a measurement object and use of said system
    DE102009026484B4|2013-11-21|Machining device and machining method for machining workpieces
    DE102005060104B4|2008-04-30|Compensation method for a CNC processing machine
    DE102015205569A1|2016-09-29|Calibration of a moving part of a CMM or a tactile button attached to it
    DE102004055602A1|2005-10-13|Arrangement for setting and testing machining tools has optical carrier that can be moved in two different directions, so that tool can be positioned in optical light path between illumination unit and projection surface
    同族专利:
    公开号 | 公开日
    DE202015004771U1|2015-07-22|
    AT516008B1|2016-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4567659A|1985-04-25|1986-02-04|Kitamura Machinery Co., Ltd.|Tool size measuring apparatus for NC machine tools|
    DE3603316C1|1986-02-04|1987-09-17|Index Werke Kg Hahn & Tessky|Device for setting the working point of a tool in a CNC machine tool|
    JPH1188252A|1997-09-04|1999-03-30|Nippon Denki Ido Tsushin Kk|Portable telephone set|
    US20030167103A1|2002-01-31|2003-09-04|Qing Tang|Robot machining tool position and orientation calibration|
    DE102008004849A1|2008-01-17|2009-07-23|Vollmer Werke Maschinenfabrik Gmbh|Apparatus and method for machining workpieces|CN107088788A|2016-06-28|2017-08-25|中航湖南通用航空发动机有限公司|A kind of Reference Transforming processing method|DE19924511A1|1999-05-28|2000-12-21|Bernd Scheibner|Measurement method for a handling device|
    EP1719584B1|2005-05-06|2007-10-24|Satisloh GmbH|Method for auto-calibration of tool in a single point turning machine used for manufacturing in particular ophtalmic lenses|AT518176B1|2016-06-09|2017-08-15|Steger Heinrich|Method for operating a CNC machine|
    CN107511492B|2017-09-12|2019-01-01|大连理工大学|A kind of lathe fast roll setting device|
    DE102018125840B4|2018-10-18|2021-07-22|Megatron Elektronik Gmbh & Co. Kg|Tool Center Point|
    法律状态:
    2020-03-15| MM01| Lapse because of not paying annual fees|Effective date: 20190702 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA526/2014A|AT516008B1|2014-07-02|2014-07-02|Position detecting means for detecting a position of a tool|ATA526/2014A| AT516008B1|2014-07-02|2014-07-02|Position detecting means for detecting a position of a tool|
    DE202015004771.8U| DE202015004771U1|2014-07-02|2015-07-02|Position detecting means for detecting a position of a tool|
    [返回顶部]