• 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:
    DYNAMIC BALANCING PROCESS AND DEVICE FOR A ROTATING BODY AND RECTIFIER MACHINE, since the present invention is a balancing device (1) for a rotating body (10) that defines an axis of rotation (10a) and comprises: a plurality balancing heads (30) aligned along the axis of rotation (10a), each of the balancing heads (30) comprising: balancing masses (31) suitable to be moved along a circumference of movement, to cancel the imbalance of the rotating body (10); at least one motor (32) suitable for moving the balancing masses (31) independently, with the balancing masses (31) that are part of different balancing heads (30) being mutually spaced along the route axis tion (10a); unbalance detection means (5), which include a plurality of vibration detectors (5a) suitable for measuring vibrations caused by unbalance of the rotating body (10).
    公开号:BR112015007436B1
    申请号:R112015007436-7
    申请日:2013-10-02
    公开日:2020-12-29
    发明作者:Gianni Trionfetti
    申请人:Balance Systems S.R.L；
    IPC主号:
    专利说明:

    Field of the Invention:
    [001] The present invention is a process and a dynamic balancing device for a rotating body of the type specified in the preamble to the independent claims.
    [002] In particular, the present invention relates to an appropriate device and process for recovering the dynamic imbalance of a tool. More specifically, the process and the device are designed to be used with a grinding machine and, to be more precise, to be used with a wheel, in order to cancel the imbalance. Fundamentals of the Invention:
    [003] As is generally known, tools can have rotary and / or dynamic unbalance.
    [004] The rotary unbalance occurs when the tool is not perfectly balanced in relation to its axis of rotation, that is, when its center of mass is not on the axis of rotation.
    [005] Dynamic imbalance, on the other hand, refers to the imbalance that occurs along the section planes that cross the wheel axis. There can be a plurality of normal sections perpendicular to the axis of rotation of the tool with rotary unbalances that compensate for each other, but give rise to undesirable moments along axes perpendicular to the axis of rotation of the tool. Such an imbalance occurs, therefore, along two planes.
    [006] The said rotary and / or dynamic unbalance causes unwanted vibrations when the tool is turned to rotate and, consequently, determines poor machining quality and several inconveniences.
    [007] In order to avoid such problems, whenever a wheel is mounted on the grinding machine, the operator balances said wheel through the use of appropriate devices and counterweights.
    [008] Despite the initial balance, as the wheel wears out, its center of mass tends to change and move away from the axis of rotation. During machining processes, the wheel is subject to deformation and wear, which modify its geometry, causing imbalance.
    [009] The balancing devices and processes are capable of assessing the rotary unbalance of the wheel, so they can continuously change the position of the center of mass of the wheel in order to rebalance it.
    [010] Generally, they comprise two mutually movable masses suitable for canceling the unbalance that occurs, a sensor suitable for detecting unbalance of the wheel and an appropriate control device to control the movement of the masses, depending on the imbalance.
    [011] The above mentioned prior art has some important disadvantages.
    [012] A first drawback is due to the fact that known balancing devices are unable to perform dynamic balancing of a rotating body.
    [013] A second important disadvantage is due to the fact that the known balancing devices perform balancing through a particularly long process, since the masses move in a substantially random manner. Once the imbalance has been detected, the balancing process consists of moving the masses to a position and then measuring the difference in the imbalance in relation to the previous position. If the result is not as expected, that is, if the wheel is not correctly balanced, the process needs to be repeated until the position of the masses is able to cancel the wheel unbalance.
    [014] Another drawback, then, is the fact that, due to the time necessary to carry out the balancing process, the cycle times of the machine are increased.
    [015] Another defect is the fact that, due to the wear of the wheel and the need to have a constant tangential speed, the known devices are not able to balance the wheel and, therefore, the operator is obliged to interrupt the process of machining to adjust the machine.
    [016] This drawback is of particular importance in the case of rotating wheels with a long axial extension, such as those for machining gears. Summary of the Invention:
    [017] Faced with such a situation, the technical proposal of the present invention consists of presenting a process and a dynamic balancing device for a rotating body, which can substantially overcome the above mentioned inconveniences.
    [018] Within the scope of said technical proposal, an important objective of the present invention is to present a process and a balancing device that can dynamically balance the part to be machined.
    [019] Another objective of the present invention is to present a balancing process and device that can ensure fast and practically perfect balancing of a rotating body.
    [020] Another important objective of the present invention is, therefore, to present a balancing process and device that make it possible to obtain high quality products.
    [021] Another objective of the present invention is to present a balancing process and device that can ensure an ideal static and dynamic balance of the wheel.
    [022] The technical proposal and the specified objectives are achieved with a process and a balancing device for a rotating body, as claimed in the attached independent claims.
    [023] Preferred embodiments of the present invention are described in the dependent claims. Brief Description of the Figures:
    [024] The characteristics and advantages of the present invention will be evident in the detailed description below of a preferred modality thereof, with reference to the attached drawings, being that: - Figure 1 shows part of a balancing device for a rotating body, according to the present invention; - Figure 2 is a sectional view of a sagittal section of a balancing device according to the present invention; Figure 3 shows a balancing system that includes the device, according to the present invention, and; - Figure 4 shows possible measurements of the balancing device. Detailed Description of the Invention:
    [025] With reference to said Figures, a balancing device of a rotating body is globally indicated with the reference number (1).
    [026] The balancing device (1) is suitable to be connected to a rotating body (10) and is made to rotate around an axis of rotation (10a), in order to balance at least one type of unbalance. In detail, the balancing device (1) is suitable to be integrally connected to the rotating body (10) and, more precisely, to be housed inside the rotating body (10), on its axis, in order to rotate around the axis (10a) integrally with it.
    [027] Preferably, the balancing device (1) is suitable for use with a tool, preferably with a grinding machine and, more precisely, to be coupled to a wheel, which constitutes the rotating body (10), in order to measure and cancel the unbalance during a machining process.
    [028] The tool itself or the rotating body itself (10) is a part of a machine tool (20) comprising a rotating portion (21), including the rotating body (10), a fixed portion (22) and a control unit (23) suitable for controlling the operation of the balancing device (Figure 3).
    [029] The balancing device (1) mainly comprises a rotating portion (2) suitable to be integrally connected to the rotating body (10), preferably internally rotating, and to the rotating portion (21), in order to rotate around the axis of rotation (10a); and a fixed portion (3) suitable to be connected to the fixed portion (22) adjacent to the rotating portion (2) and to be connected to the control unit (23), by means of a wire.
    [030] In particular, the rotating portion (2) and the fixed portion (3) are electrically connected via a wireless connection, in particular, of the inductive type. In detail, the connection between the rotating portion (2) and the fixed portion (3) is obtained by means of two coils (4), one of which is coupled to the rotating portion (2) and the other to the fixed portion ( 3), and is suitable for communicating with each other by induction, and, more precisely, through the exploration of a variation in the magnetic field in one coil (4), in order to create, in the other coil (4), a proportional current to said variation of the magnetic field. An example of this type of wireless connection is described in Italian Patent No. IT-A-MI5090100 (from page 3, line 23, to page 8, line 10, and Figures 1, 3 and 4), owned by this same Applicant .
    [031] The balancing device (1) also comprises unbalance detection means (5) suitable for measuring the vibrations caused by the unbalance of the rotating body (10). Said unbalance detection means (5) preferably comprise a plurality of vibration detectors (5a), preferably two. These are preferably spaced apart, in particular, spaced apart mutually along the axis of rotation (10a), and preferably arranged in said fixed portion (22). The vibration detectors (5a) are properly connected electrically to the control unit (23), by means of wires and the like.
    [032] The balancing device (1) also comprises a plurality of balancing heads (30), preferably two, suitable for rebalancing the rotating body (10), depending on the unbalance measured by the unbalance detection means (5 ). Said balancing heads (30) are preferably aligned along the axis of rotation (10a) and can be arranged in such a way that they come into contact with each other, and therefore at a distance depending on the dimensions balancing heads (30), or can be spaced apart.
    [033] In particular, in the case characterized by the fact that the rotating body (10) has a great extension along the axis of rotation (10a) in relation to the length of the diameter, as, for example, in particular, the gear wheels, the balancing device (1) is suitably provided with balancing heads (30), Figure 2, housed within the rotating portion (3), integrally connected to the rotating body (10), preferably at the bases of said rotating body ( 10).
    [034] The unbalance detection means (5), and in particular the vibration detectors (5a), can be constituted of any sensor, suitably a piezoelectric sensor, suitable for measuring the imbalance of the rotating body (10). Preferably, each unbalance detector (5a) consists of the sensor described in European Patent EP-A-1645362 (paragraphs [0031] - [0082], Figure 1 and Figures 5-10), owned by this same Applicant. The balancing head (30) is similar to the balancing heads described in European Patent EP-A-0409050 (from column 3 row 34 to column 5 row 53 and Figure 1-3) or Italian Patent IT-A-MI5081953 ( from page 3 line 12 to page 8 line 8 and Figures 1, 2a and 2b), both owned by this same Claimant.
    [035] Each balancing head (30) comprises two balancing masses (31) suitable to be moved in order to cancel the unbalance of the rotating body (10), at least one motor (32) to move the balancing masses (31 ) independently and a transmission mechanism (33) suitable for transmitting the movement of the motors (32) to the balancing masses (31).
    [036] The balancing masses (31) of different balancing heads (30) are, therefore, mutually spaced along the axis of rotation (10a), that is, their respective centers of mass do not coincide along that axis. On the other hand, the balancing masses (31) of the same balancing head (30) have, appropriately, the same central position of the mass along the axis of rotation (10a).
    [037] In particular, each of the balancing heads (30) consists of two motors (32), one for each balancing mass (31), which extend symmetrically along the axis of rotation (10a). Suitably, the motors (32) are electric motors and, more appropriately, BC motors.
    [038] The balancing masses (31) are substantially identical and preferably have a profile in the form of an arc of circumference substantially centered on the axis of rotation (10a). They are suitable for making the translational movement along a circumference of a movement substantially concentric with the axis of rotation (10a) and being on a plane substantially perpendicular to the axis of rotation (10a).
    [039] The transmission mechanism (33), of a type known per se, defines a transmission relationship between the balancing masses (31) and the motors (32) substantially between 1/8000 and 1/1500 and, preferably substantially equal to 1/10000.
    [040] Advantageously, each of the balancing heads (30) comprises, in addition to the components mentioned above, at least one position sensor (34) suitable for monitoring the position of the balancing masses (31); and at least one control card (35) suitable for transmitting the signals from and also preferably to the motors (32).
    [041] The position sensor (34) is suitable for detecting the absolute position of any simple balancing mass (31) along the circumference of the movement, in order to allow the motors (32) to control the mutual movement of the masses of balancing (31) along the same circumference, both as a function of its initial position and the unbalance of the rotating body (10), as detected by the vibration detectors (5a).
    [042] In particular, each position sensor (34) comprises a motion sensor (36) suitable for checking the movement and movement of the balancing masses (31). In detail, the motion sensor (36) consists of an encoder functionally connected to a simple motor (32) and suitable for detecting activation and the respective number of revolutions or portions of revolution, and the consequent movement of the balancing mass (31) connected.
    [043] The motion sensor (36) consisting of an encoder achieves a high level of accuracy, considering the said transmission ratio between the balancing masses (31) and the motors (32), so that a complete rotation of a motor is followed by a rotation of the balancing mass (31) at an angle to the axis (10a), 1/10000 of a revolution, that is, approximately one-thirtieth of a degree.
    [044] The position sensors (34) comprise at least one reference sensor (37) suitable for determining the position of the balancing masses (31) in relation to the rotating portion (2) by at least one angular position. Preferably, they consist of a magnetic element (37a) placed in each balancing mass (31) and a sensitive element (37b) connected by means of an interface with said magnetic element (37a).
    [045] Through the presence of the reference sensor (37) and the motion sensor (36), position sensors are therefore suitable for determining, at each instant, the position of each balancing mass (31) in relation to to the rotating portion (2).
    [046] The control card (35) consists of an electronic card. There is, appropriately, a control card (35) for each motor (32) positioned at one end of said motor (32).
    [047] It receives the analog input signals and, preferably, it also receives the output signals from the position sensors (34) coupled, preferably, to a simple motor (32). In particular, the control card (35) receives signals from the motion sensor (36) and preferably also receives from the reference sensors (37). Said control card (35) is preferably suitable for converting the received signals in the analog format to the digital format. The digital signal is then transmitted by two electrical wires (35a), leading from the rotating portion (2). Preferably, the same functions are also performed for input signals sent to the motors.
    [048] Furthermore, due to the fact that the rotating portion (2) comprises two or four motors (32) and, consequently, two or four control cards (35), the same two wires (35a) properly transfer the signal from and for a plurality of control cards (35) and, preferably, from all cards (25), in order to create a network consisting substantially of said control cards (35).
    [049] This solution means that it is possible to have two electrical wires (35a) leading from the balancing head (30) instead of the plurality of electrical wires, two for each control card (35) and, therefore, at least four or eight, that would be needed in the absence of such innovation. Such a plurality of wires would have caused significant problems during assembly for the passage of the wires.
    [050] The control card (35) can be easily produced by a person skilled in the art, using his common general knowledge.
    [051] Finally, the balancing device (1) comprises detection means (6) suitable for measuring the angular position α of the rotating body (10) in relation to the fixed portion (22) around said axis of rotation (10a ), in particular, during the execution of a machining process.
    [052] Said detection means (6) comprise at least one magnet (6a) selectively connected to the rotating portion (2) or to the fixed portion (3), and a Hall effect sensor (6b) or other similar sensor suitable for detecting said magnetic field and selectively disposed in front of the magnet (6a) or in the fixed portion (3) or in the rotating portion (2).
    [053] In particular, the detection means (6) comprise two magnets (6a) arranged symmetrically with respect to the axis of rotation (10a) and connected to the rotating portion (2), so as to face the fixed portion ( 3) and a Hall effect sensor (6b) connected to the fixed portion (3) and facing the rotating portion (2).
    [054] The operation of a balancing device for a rotating body, as described above, in a structural sense, is described below.
    [055] In particular, the operation of the balancing device (1) defines an innovative balancing process for a rotating body (10).
    [056] This balancing process briefly comprises a start-up phase, a measurement phase, in which at least the unbalance of the rotating portion (22) is measured, and a balancing phase, in which the two balancing masses (31) are moved along the circumference of the movement.
    [057] First, in the start-up phase, the balancing device (1) measures the starting position, in which the balancing masses (31) are arranged inside the balancing head (30) along the circumference of the movement, for position sensors (34). In addition, the value of the balancing masses (31) is sent to the control unit (23) by means of a simple data entry process performed by the user of the other method.
    [058] After setting the starting position, the start-up phase ends and the operator configures the rotating body (10) on the rotation axis (10a) in rotation to start the machining process.
    [059] First, a calibration phase is activated from time to time. In this calibration phase, preferably, each balancing head (30) is activated individually at different times, and combinations of balancing heads (30) can be activated at the same time.
    [060] In particular, each of the balancing heads (30) generates an imbalance that changes, by a known quantity, the position of the balancing masses (31) along the circumference of the movement, while the position sensor (34 ) detects the position of said balancing masses (31). The size and position of the unbalance are then directly measured by direct and precise identification of the size and position of the balancing masses (31). Said measurement is preferably carried out by the position sensor (34).
    [061] At the same time, the unbalance detection means (5), and in particular each vibration detector (5a), measure the vibrations caused by the said unbalance and are able to perform a precise and one-to-one correlation between the measured vibrations and the size and position of the imbalance.
    [062] In fact, it is not enough to know the position and size of the imbalance to calculate, with precision, the vibrations caused. Vibrations also depend on mass, diameter, speed and other factors associated with the rotating portion (21) of the machine tool (20). These parameters are not always known or are not known with the necessary degree of precision.
    [063] Since such parameters of the rotating portion (21) may vary according to the wear of the wheel or another tool that is part of the rotating portion (21), the calibration phase is carried out from time to time, especially when the tool is worn and any change in the speed of rotation occurs.
    [064] These measurements are properly stored so that when the tool is replaced, the calibration phases do not need to be repeated, because the balancing device (1) can use the data from the database that was created.
    [065] Furthermore, by knowing the position of the unbalance inside the balancing head (30), therefore, in relation to the rotating portion (21), and through the detection means (6), it is possible to correlate the position of the unbalance in relation to the fixed portion (22). In detail, during this measurement phase, the vibration detectors (5a) detect the unbalance of the rotating body (10) along a given angular position. An example of such a measurement is shown in Figure 4, where the force F (F1 or F2, when two vibration detectors (5) are preferably included) is represented on the ordinate axis and the angular position α of the rotating body is represented on the abscissa axis. The position sensor (34) detects the position of the balancing masses (31) along the circumference of the movement.
    [066] Furthermore, in such a calibration phase, the detection means (6) measure, by exploring the Hall effect, the angular position α of the rotating portion (2) in relation to the fixed portion (3), that is, , the angular position of the rotating portion (21) and the connected rotating body (10). In Figure 4, an example of the measurement of the angular position α of the rotating body (10) is given, with the peaks corresponding to the overlapping of the I pulses given by the magnets (6a) to the Hall effect sensor (6b).
    [067] The absolute position, which is the position in relation to the fixed portion (22), is therefore precisely correlated with the size of the imbalance in relation to the vibrations read by the two different vibration detectors (5a).
    [068] Furthermore, since there are at least two vibration detectors (5a) arranged at a distance from each other and since there are at least two balancing heads (30), the imbalance is identified and correlated with the vibrations measured along the axial and circumferential positions of the rotating portion and the connected rotating body (10).
    [069] After the calibration phase, or separately from these, the phases for measuring unbalance and balancing are performed.
    [070] In the measurement phase, the balancing device (1) measures the vibrations caused by the unbalance of the rotating portion (21) and the connected rotating body (10), through the unbalance detection means (5) and, in particular , through the vibration detectors (5a). The measured vibrations are precisely correlated with the unbalance of the rotating portion (21), from which the size and axial and circumferential position are accurately calculated, preferably in relation to the fixed portion (22), thanks to the calibration phase described above. .
    [071] In the balancing phase, the control unit (23) calculates the position of the balancing masses (31) of the necessary balancing heads (31), in order to cancel the measured unbalance and control said balancing heads, in order such that the said balancing masses (31) are subsequently moved, in order to correct the imbalance in the axial and circumferential directions, and therefore to correct the dynamic and / or rotary unbalance of the rotating portion and the connected rotating body (10) .
    [072] As a result, balancing and movement are not performed as random operations, but directly from the starting position to the balanced position.
    [073] The present invention has important advantages.
    [074] A first important advantage is that the balancing device (1) is capable of recovering dynamic imbalance.
    [075] Another important advantage is that, thanks to the position sensor (34), which detects the position of the balancing masses (31) along the circumference, the balancing device (1) identifies the position of the balancing masses (31) along the circumference at any time and, therefore, is able to detect the movement of the masses, in order to recover the imbalance of the rotating body (10).
    [076] With the devices and processes known in the prior art, the position of the balancing masses at any time was practically unknown and the balancing masses (31) therefore had to be moved at random. Balancing device (1), on the other hand, knows the position of the balancing masses (31) at any time and, therefore, can easily identify how the said balancing masses are to be moved.
    [077] Such capacity is also increased by the fact that, with the detection means (6), the balancing process and device (1), by detecting the angular position α of the rotating body (10), identify the position that the balancing masses (31) must assume to cancel the imbalance.
    [078] Another advantage is that, due to the presence of the position sensor (34) and also the detection means (6), the balancing process and device (1) cancel the imbalance in an extremely short time.
    [079] Unlike the prior art processes and devices, the grinding machine therefore achieves particularly high levels of efficiency and precision.
    [080] Another important advantage is that, thanks to a reduced gear ratio between the motors (32) and the balancing masses (31), the balancing device (1) positions the balancing masses (31) at a high level precision, ensuring, therefore, the almost total cancellation of the unbalance of the rotating body (10).
    [081] Modifications and variations may be made to the present invention described herein, without departing from the scope of the inventive concept, as expressed in the claims. All elements, as described and claimed in the present invention, can be replaced by equivalent elements and the scope of the invention includes all other details, materials, shapes and dimensions.
    权利要求:
    Claims (13)
    [0001]
    1. BALANCING DEVICE (1) FOR A ROTATING BODY (10) that defines an axis of rotation (10a), characterized by the fact that it comprises a plurality of balancing heads (30) aligned along said axis of rotation (10a) , each of said balancing heads (30) comprising: balancing masses (31) suitable to be moved along a circumference of said movement, to cancel the imbalance of said rotating body (10); at least one motor (32) suitable for moving said balancing masses (31) independently, said balancing masses (31) forming part of different balancing heads (30) are mutually spaced along the axis rotation (10a); unbalance detection means (5), which include a plurality of vibration detectors (5a) suitable for measuring vibrations caused by the imbalance of said rotating body (10).
    [0002]
    2. BALANCING DEVICE (1), according to claim 1, characterized by the fact that said vibration detectors (5a) are spaced apart.
    [0003]
    3. BALANCING DEVICE (1), according to claim 2, characterized by the fact that said vibration detectors (5a) are mutually spaced along the said axis of rotation (10).
    [0004]
    4. BALANCING DEVICE (1), according to any one of the preceding claims, characterized in that each of the said balancing heads (30) comprises at least one position sensor (34) appropriate to identify the position of said masses balancing (31); and that said motor (32) is suitable for moving said balancing masses (31) independently, depending on the position of said balancing masses (31) and said imbalance of said rotating body (10).
    [0005]
    5. BALANCING DEVICE (1), according to claim 4, characterized in that each of the said balancing heads (30) comprises a control card (35) suitable for receiving input signals from said position sensors (34) coupled to said motors (32), and at least two electrical wires (35a) are suitable for carrying signals from a plurality of said control cards (35) to outside said device.
    [0006]
    6. BALANCING DEVICE (1), according to the previous claim 5, characterized in that the said control card (35) is suitable for converting the signals received from said position sensor (34) from the analog format to the format digital, in order to create a network consisting of said control cards (35) connected by means of said electrical wires (35a).
    [0007]
    7. BALANCING DEVICE (1), according to any one of the preceding claims, characterized by the fact that it comprises detection means (6) suitable for measuring the angular position (α) of said rotating body (10) in relation to said axis rotation (10a); and that said at least one motor (32) moves said balancing masses (31) according to said angular position (α).
    [0008]
    8. RECTIFIER MACHINE, characterized by the fact that it comprises at least one balancing device (1), according to any one of the previous claims.
    [0009]
    9. BALANCING PROCESS FOR A ROTATING BODY (10), through the use of a balancing device (1), the said balancing device (1) defining an axis of rotation (10a), and comprising: means of unbalance detection (5) appropriate to measure the vibrations caused by the imbalance of said rotating body (10); a plurality of balancing heads (30) aligned along said axis of rotation (10a), each of which comprises balancing masses (31) suitable to be moved, to cancel said unbalance of said rotating body (10) ; said balancing masses (31), which are part of different balancing heads (30), are mutually spaced along the axis of rotation (10a); characterized by the fact that the referred balancing process comprises: a calibration phase, in which each balancing head (30) is activated separately, to modify the position of the balancing masses (31) and, therefore, create an imbalance, being that the size and position of said unbalance created by said balancing masses (31) of each balancing head (30) are directly measured by identifying the positions of said balancing masses (31) and their size; the vibrations caused by said unbalance being measured by said unbalance detection means (5), in order to obtain a correlation between said measured vibrations and said size and said position of said unbalance; a measurement phase, in which the vibrations caused by the imbalance of said rotating body (10) are measured, by means of said means of detecting imbalance (5), and the size and position of the imbalance of said rotating body (10) therefore, they are calculated by means of the aforementioned correlation; a balancing phase, in which the position that said balancing masses (31) of said balancing head (30) must assume to cancel said imbalance is calculated, and said balancing masses (31) are subsequently moved to correct said dynamic or rotary imbalance of said rotating body (10).
    [0010]
    10. BALANCING PROCESS, according to claim 9, characterized by the fact that said rotating body (10) is connected to a fixed portion (22) that does not rotate, and that said calibration phase the position of said unbalance is measured in relation to said fixed portion (22).
    [0011]
    11. BALANCING PROCESS, according to claim 10, characterized in that said position of said unbalance in relation to said fixed portion (22) is obtained by means of: said direct measurement of the positions of said balancing masses ( 31) with respect to said balancing head (30), which includes said balancing weights (31); said measurement of the angular position (α) of said rotating body (10) relative to said fixed portion (22) about said axis of rotation (10a); said measurement, by analyzing the vibrations and forces measured by said vibration detection means (5), of the position of said unbalance generated by said balancing masses (31) of each balancing head (30), in relation to said fixed portion (22) about said axis of rotation (10a); the subsequent correlation between the position of said balancing masses (33) in relation to said balancing head (30) and in relation to said fixed portion (22).
    [0012]
    12. BALANCING PROCESS, according to any of claims 9 to 11, characterized by the fact that at least part of said calibration phase is performed regularly, when there is any change in the physical properties of said rotating body (10).
    [0013]
    13. BALANCING PROCESS, according to any one of claims 9 to 12, characterized in that the said values obtained from said calibration phases are stored and retrieved when the conditions of said rotating body (10) are again identical.
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-31| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-10| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/10/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP12187044.8A|EP2717032B1|2012-10-02|2012-10-02|Balancing Process and Device for a Rotating Body|
    EP12187044.8|2012-10-02|
    PCT/IB2013/059073|WO2014054010A1|2012-10-02|2013-10-02|Dynamic balancing process and device for a rotating body|
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