• 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:
    A tool changing arrangement for a machine tool comprises a rotary and axially movable drive spindle which coaxially carries a holding member rotatable therewith and movable in axial direction relative thereto. A tool carrier movable transversely to the holding member is provided at one end with a T-shaped slot into which a corresponding male portion on the holding member may be engaged, to couple the tool carrier to the holding member. The spindle and the tool carrier are provided at facing ends with interengaging centralizing portions which during axial movement of the holding member relative to the spindle axially align the tool carrier and the spindle.
    公开号:SU928998A3
    申请号:SU762372398
    申请日:1976-06-16
    公开日:1982-05-15
    发明作者:Блюм Гюнтер；Штарк Герхард
    申请人:Штама Штарк Машиненфабрик Готтхильф Штарк (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to machine tool industry, in particular to metal cutting machines with automatic tool change.
    A device is known for automatic tool change on a metal cutting machine with a spindle arranged with rotation and axial movement with a fastener for a corresponding groove on the tool holder, comprising a tool magazine with sockets for tool holders compatible with the axis of the machine spindle [1].
    However, the known device is complex in design and does not provide a rigid grip in the spindle of the machine tool holder.
    The purpose of the invention is to simplify the design of the device.
    1 The goal is achieved. That is, the device has a spindle mounting element.
    the machine has a cross-section ‘
    T-shaped, and on the facing end faces of the spindle and tool holder are made centering cones.
    In FIG. 1 shows a machine with a tool changer, side view; in FIG. 2 - the same front view; in FIG. 3 - same, top view;
    5 in FIG. 4 - section AA in FIG. 3; in FIG. 5 - section of the lower part · '. spindle inserted in the clamping ale; cop tool holder before connecting; in FIG. 6 is a section * 0 BB in FIG. 5; in FIG. 7 is a section BB in FIG. 6; in FIG. 8 is a section according to FIG. 5 after connecting the spindle and tool holder.
    The metal-cutting machine has a bed 1, on which the spindle head 2 moves forward and backward. Table 3 with a clamping surface moves in two coordinates. On the underside of the spindle head 2 there is a magazine 4, on which, for example, fifteen or thirty tools are clamped in the holders, tools - mandrels 5. The mandrels are suspended on a strap 6 that performs circular motion with the help of a transport system (not shown like), for example Maltese cross t and arbitrarily supplied to Posy processing tion 7, after which they are introduced into the store 4 to the loading station 8. in the treatment station 7, they are connected with the spindle 9 situated hydrostatic and therefore without wearing, shpind l 9 has a greater accuracy and high speed range (28 to 5600 rev / min), so that in any industry, whether it be drilling, turning, milling, -, a high fabrication accuracy.
    The spindle works with a stop, i.e. in one final position (Fig. 4). The spindle 9 has constantly the same distance from the reference point and the same angular position. All machine functions are controlled from a three-axis control device.
    The drive spindle 9 is made in the form of a hollow spindle, in the hole 10 of which (Fig. 4) a fastening element 11 is placed, which is connected by a kinematic closure using the groove 12 and the key 13 to the spindle 9 and moves in the direction of the axis 1.4. The clamping member has a T-shaped clamping head 15. In the zone 7 of the processing station, this clamping head 15 in the lower position of the element 11 is an integral part of the strip b, i.e. as a result of the stop of the spindle 9, the clamping head 15 is located at the same height with the bar 6. On the side of the element 11 opposite to the clamping head 15 there is a protrusion 16 in the form of a pin, which in the final position moves relative to the axial stop 17, as a result of which the height alignment with bar 6. In this final position, the spindle 9 has a certain distance to the stop 17. The axial movement of the spindle is provided by an electric motor 18, which drives the screw. 19, interacting in a known manner with a nut 20, rigidly connected to the spindle 9. The rotational movement of the hydrostatically spindle 9 'is provided by another drive, schematically shown in the form of a gear wheel 21. An energy accumulator 22 is connected between the element 11 and the spindle 9, which is advantageously made in the form a package of disk springs, one end contacting the stop 23 of the protrusion 16, and the other end of it with the protrusion 24 of the spindle 9. The package of disk springs has a prestress, so that the head 15 with effort atyagivaetsya inside spindle 9 when the projection 16 moves away from the abutment 17 axially.
    Jo
    The tool holder 5 (looking at it from its upper end side 25) has a T-shaped through hole 26, which corresponds to the • profile of the clamping head 15 of the element 11, so that the mandrel 5 can slide into the clamping head 15 from the side, i.e. perpendicular to axis 14 of the drive spindle. In this case, the mandrel 5 with its supporting surface 27 abuts against the supporting surface 28 of the clamping head 15, and the lateral surfaces of the clamping head 15 transmit the moment of rotation to the surfaces
    29 acting on the mandrel 5 through the respective surfaces
    30. Thus, the element 11 is performed as a part for transmitting the torque from the drive spindle through the groove 12 and the key 13 to the head 15 and from here through the surfaces 29 and 30 to transmit the torque to the mandrel 5.
    The end face 25 of the mandrel 5 as a centering part carries a short cone 31, is adjacent to it from the outside as a supporting surface 32, a circular surface 33 located perpendicular to the axis 34 of the mandrel. Both the short cone 31 and the circular surface 33 have a groove 26, as well as two opposite openings 35 and 36 (Fig. 6), so that the short cone 31 is divided into four sectors 37-40.
    The spindle 9 on its end side 41 also has a short cone 42 as a centering part, 'which is made in the form of an inner cone and to which, on the outside, as a supporting surface 43, there is a flat circular surface 44 located perpendicular to the axis 14.
    The mandrel 5 can take a variety of tools, since its upper side is the same for capture in the magazine 4 and element 11.
    The device operates as follows.
    During processing, the mandrel 5 with the desired tool is fed by the transport system to the processing station 7, while the spindle 9 and element 11 have a position in which the cross of the clamping head 15 and the bar b are on a straight line (Fig. 4). The spindle 9 and the mandrel 5 have the position shown in FIG. 5. When turning on the quick feed, the spindle 9 moves downward with the help of an electric motor 18, * while the latch 11 first remains in its position, and the stack of 22 disc springs is partially relaxed. When the spindle 9 is subsequently lowered, the mandrel 5 is gripped by the element 11, which is thereby freed from the axial stop 17. At the moment, the action of the energy accumulator 22 is manifested, which moves the element 11 upward and through the supporting surfaces 28 and 27, the mandrel 5 with the required clamping force. Since the supporting surfaces 5 and 32 are already in contact, this leads to the fact that sectors -37 - 40 of the short cone 31 are compressed so that exact centering with the short cone 42 takes place. 10 Axial and radial stiffness of the joint is obvious, accuracy length provided. The feed is controlled in the usual way until the cutting process is completed. Before returning by 15 moving the table in accordance with the stop of the spindle 9, the tool is moved away from the surface to be machined. At the end of the retraction, the element 11 first contacts q q with the stop 17 through the protrusion 16, and the movement of the spindle 9 by means of the electric motor 18 continues, and the stack of 22 disc springs is additionally tensioned, and the centering parts 25 31 and 42 are released one from the other, while the spindle 9 remains in its specific final position, in which the cross-member and the bar 6 are again in the same line, incl. the mandrel 5 by means of a transport system (not shown) leaves the processing station 7 and a new tool can be introduced in another mandrel 5.
    The invention is described by the example of an automatic mechanism for changing a tool, it can also be used when manually inserting the mandrel 5 into the element 11 of the spindle 9. It should be noted that the axes 14 and 34 are almost on the same line, preliminary centering is carried out short the cones 31 and 42, and the exact centering occurs by compressing the sectors 37 - 40.
    权利要求:
    Claims (2)
    [1]
    The invention relates to a machine tool industry, in particular to machine tools with automatic tool change. A device is known for automatic tool changer on a cutting machine with a spindle rotatably and axially moving with a fastener element under the corresponding groove on the tool holder, which contains a tool magazine with recesses for tool holders aligned with the machine spindle {1J. However, the known device is complicated in design and does not provide a tight grip in the machine tool spindle. The purpose of the invention is to simplify the design of the device. The goal is achieved. In the device, the fastening element of the machine spindle has a T-shape in cross-section, and on the face sides of the spins of the cases and tool holders facing each other, the cones are centered. FIG. 1 shows a machine with a tool changer, side view; in fig. 2 - the same, front view; in fig. 3 - the same, top view; in fig. 4 is a section A-A in FIG. 3; in fig. 5 shows a cross section of the lower part of the spindle with a tool holder inserted into the clamping element before connection; in fig. 6 is a section BB in FIG. five; in fig. 7 is a sectional view BB in FIG. 6; in fig. 8 is a section according to FIG. 5 after connecting the spindle and tool holder. The cutting machine has a bed 1, on which the spindle head moves forward and back
    [2]
    2. Table 3 with clamping surface moves in two coordinates. On the underside of the spindle head 2 there is a magazine 4, on which, for example, fifteen or thirty tools are clamped in tool holders - mandrels 5. The mandrels are hung on the bar 6, which performs circular motion using a transport system (not shown similarly), for example Maltese chair, and randomly served in the processing position 7, after which they are entered into the store 4 in the loading station 8. In the processing station 7 it is connected to the spindle 9 located hydrostatically, and consequently, without wear, spind l 9 has a greater accuracy and pain xoy speed range (28 to 5600 rev / min), so that in any industry, whether it be drilling, turning, milling, - high precision is achieved MANUFACTURING the Theoretical. The spindle works with a stop, i.e. in one final position (fig. 4). The spindle 9 has the same distance from the reference point and the same angular position. All machine functions are controlled by a three-axis control device. The drive spindle 9 is made in the form of a hollow spindle, into the opening 10 of which (Fig. 4) a fastening element 11 is placed, which is connected by a kinematic closure by means of a groove 12 and a key 13 to the spindle 9 and moves in the direction of the axis 1.4. The clamping element has a clamping head 15 T-about different shapes. In zone 7 of the processing station, this clamping head 15 in the lower position of the element 11 is an integral part of the bar b, i.e. as a result of the spindle 9 stopping, the clamping head 15 is positioned at the same height as the bar 6. On the side of the element 11 opposite to the clamping head 15, there is a pin-shaped protrusion 16 that moves in the final position relative to the axial stop 17, as a result, height with bar 6 In this final position, the spindle 9 has a certain distance from the stop 17. The axial movement of the spindle is provided by an electric motor 18, which is driven by a screw. 19, interacting in a known manner with a nut 20, a gesture connected to the spindle 9. The rotational movement of the hydrostatically located spindle 9 Chaboеспеч is provided by another drive, schematically depicted as a gear wheel 21. Between element 11 and the shaft 9, an energy accumulator 22 is turned on, which is advantageous to View of a disk spring package, with one end in contact with the stop 23 of the protrusion 16, and the other end with the protrusion of the 24 spindle 9. The disk spring package has a preload, so that the head 15 with force is inserted inside the spindle 9 when the protrusion 16 moves away from the axial stop 17. The tool holder 5 (examining it from its upper face side 25) has a T-shaped through hole 26, which corresponds to the profile of the clamping head 15 of the element 11, so that the mandrel 5 can slide into the clamping head 15 from the side, i.e. perpendicular to axis 14 of the drive spindle. In this, the mandrel 5 with its bearing surface 27 abuts against the supporting surface 28 of the clamping head 15, and the lateral surfaces of the clamping head 15 transmit the moment of rotation to the surfaces 29 acting on the mandrel 5 through the respective surfaces 30. Thus, the element 11 is executed as a part for transmission torque from the drive spindle 9 through the groove 12 and the key 13 to the head 15 and from here through the surfaces 29 and 30 to transfer the moment of rotation to the mandrel 5. The front side 25 of the mandrel 5 as a centering part carries a short taper 31, Adjacent to it outside as a supporting surface 32 is a circular surface 33 located perpendicular to the axis of the mandrel 34. Both the short taper 31 and the circumferential surface 33 have a groove 26, as well as two opposite openings 35 and 36 (Fig. 6), so that the short taper 31 is divided into four sectors 37-40. The spindle 9 also has on its face 41 as a centering part, a short cone 42, which is made in the form of an internal cone and to which outside a flat circular surface 44 adjoins as a support surface 43, is located perpendicular to the axis 14 .. The mandrel 5 can receive a variety of tools, since its upper side is made equally gripping the store 4 and the element 11. The device operates as follows. When machining, the mandrel 5 with the desired tool is fed by the transport system to the machining station 7, while the spindle 9 and the element 11 have a position in which the cross member of the clamping head 15 and the bar 6 are on the same straight line (Fig. 4). The spindle 9 and the shaft 5 have the position shown in FIG. 5. When the fast feed is activated, the spindle 9 moves downwardly by means of the electric motor 18, while the latch 11 first remains in its position, and the package 22 of the disk springs is partially loosened. When the spindle 9 is subsequently released, the mandrel 5 is gripped by the element 11f, which is thus released from the axial stop 17. At this point, the energy accumulator 22 is acting, which moves the element 11 upwards and through the supporting surfaces 28 and 27 of the mandrel 5 with the required clamping force. Since the bearing surfaces 32 and 43 are already in contact, this leads to the fact that the sectors -37-40 of the short cone 31 are compressed so that precise centering with the 5th cone 42 takes place. The axial and radial rigidity of the connection is obvious; length is provided. The feed is controlled in the usual manner until the reeing processing is completed. Before retraction by moving the table in accordance with the stop of the spindle 9, the tool is retracted from the work surface. At the end of the retraction, the element 11 is initially in contact with the stop 17 through the protrusion 16, and the movement of the spindle 9 by means of the electric motor 18 continues, the disk spring package 22 is additionally tensioned, and the centering parts 31 and 42 are freed from each other while the spindle 9 remains in its defined the final position in which the cross member and the strap 6 are again in one line, i.e. the mandrel 5 through the T1 of the transport system (not shown) exits the processing station 7 and a new tool can be inserted in another mandrel 5. The invention is described using an example of an automatic mechanism for. tool offset, it can also be used when manually inserting the mandrel 5 into the element 11 of the spindle 9. It should be noted that the axes 14 and 34 are almost on the same line, the pre-centering is carried out by short cones 31 n 42, and precise centering takes place by compressing sectors 37-40. Claims of the invention A device for automatically changing tools on a cutting machine with a spindle rotatably and axially moving a spindle with a fastener element under the corresponding slot in the tool holder, which contains a tool magazine with sockets for tool holders aligned with the machine spindle axis, this is because, in order to simplify the design of the device, the machine spindle fastener has a T-shape in cross section and To the other, the face sides of the spindle and tool holder are made centering a cone. Sources of information accepted in the attention during examination 1. US patent 3413702, cl. 29-26, 1968.
    R
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    FIG. 2
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU928998A3|1982-05-15|Device for automatically changing tools in metal cutting machine tool
    US4785525A|1988-11-22|Machine tool for complex machining
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    US3431635A|1969-03-11|Tool engaging device
    EP0298672A2|1989-01-11|Multispindle lathe
    US5020402A|1991-06-04|Method and apparatus for machining both sides of workpieces
    US6454684B2|2002-09-24|Automatic tool changing apparatus
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    US6447225B1|2002-09-10|Spindle assembly drive
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    US4888865A|1989-12-26|Machine tool
    US4953274A|1990-09-04|Machine tool with two workpiece spindles
    US5030049A|1991-07-09|Tool-outfitted turn broaching machine
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    US3369820A|1968-02-20|Power chuck
    JP4088047B2|2008-05-21|Processing equipment
    SU509350A1|1976-04-05|Rotary Drilling Machine
    KR100419295B1|2004-06-04|Product receiving device
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    CN210413961U|2020-04-28|Fluted lathe is bored to fluted drill
    SU1357186A1|1987-12-07|Multioperation machine tool
    同族专利:
    公开号 | 公开日
    DE2526902B2|1981-08-27|
    DE2526902C3|1982-09-02|
    ES448901A1|1977-07-16|
    GB1510589A|1978-05-10|
    CH598909A5|1978-05-12|
    SE7606875L|1976-12-17|
    AT343972B|1978-06-26|
    IT1081204B|1985-05-16|
    ATA395876A|1977-10-15|
    DD124958A5|1977-03-23|
    DE2526902A1|1976-12-23|
    US4103405A|1978-08-01|
    DK266776A|1976-12-17|
    FR2314804B1|1982-10-22|
    FR2314804A1|1977-01-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3413702A|1965-03-01|1968-12-03|Houdaille Industries Inc|Turret machine having tool store|
    GB1142322A|1965-03-04|1969-02-05|Richards & Co Ltd George|Tool retainer|
    GB1195371A|1966-07-28|1970-06-17|Herbert Ltd A|Machine Tools with Tool Change Facilities|
    DE1652717A1|1968-01-26|1971-04-08|Salje Ernst|Device for changing tools on machine tools|
    US3628231A|1969-02-28|1971-12-21|Houdaille Industries Inc|Machine tool having tool loader and unloader|
    GB1331054A|1969-10-09|1973-09-19|Herbert Ltd A|Machine tools with automatic tool change facilities|
    US3893371A|1972-03-27|1975-07-08|Houdaille Industries Inc|Method and means for operating a spindle drive in a machine tool|
    US3797956A|1972-12-15|1974-03-19|J Bayer|Machine tool holder and driving means|
    FR2268591A1|1974-04-29|1975-11-21|Zahnradfabrik Friedrichshafen|Counter sink tool for workpiece spot facing - has drive and cutting force transmission by radial projections mounted on carrier|JPS5633216B2|1977-04-25|1981-08-01|
    DE2936785C2|1979-09-12|1990-03-08|Gerhard 7311 Notzingen De Stark|
    US4356609A|1980-12-12|1982-11-02|Kearney & Trecker Corporation|Spindle keylock|
    FR2511282B1|1981-08-13|1986-08-08|Om Ltd|MACHINE TOOL WITH AN AUTOMATIC TOOL CHANGER|
    US4521950A|1981-08-13|1985-06-11|O-M Limited|Automatic tool change machine tool|
    US4499650A|1982-06-24|1985-02-19|Kentner B. Wilson|Automatic tool changer|
    CH649021A5|1982-08-06|1985-04-30|Charmilles Sa Ateliers|MACHINE FOR MACHINING BY EROSIVE ELECTRIC DISCHARGES.|
    EP0293036B1|1983-11-15|1994-04-06|Renishaw plc|Coupling for tool change apparatus|
    US4770599A|1984-01-23|1988-09-13|Dynapert Precima Limited|Pick-up head for handling electric components|
    US4902178A|1987-11-06|1990-02-20|Guy Neyret|Rapid fixation device|
    DE3918903C2|1989-06-09|1993-01-21|Gebr. Heller Maschinenfabrik Gmbh, 7440 Nuertingen, De|
    US5105528A|1991-01-22|1992-04-21|Universal Instruments Corporation|Method and apparatus for supplying and changing tips of a pick and place vacuum spindle|
    US5433562A|1993-12-03|1995-07-18|J. D. Phillips Corporation|Cutter quick change system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2526902A|DE2526902C3|1975-06-16|1975-06-16|
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