JP4631688B2 - Meshing transmission error measuring device - Google Patents

Description

  The present invention relates to a mesh transmission error measuring device for a gear transmission mechanism, and more particularly to a device capable of continuously measuring a mesh transmission error with high accuracy.

  The pair of gears that mesh with each other and rotate cause meshing transmission errors due to tooth surface shape errors, tooth deflection, and the like, which affects power transmission performance and generates vibrations. In order to detect such meshing transmission error, the pair of first gear and second gear meshing with each other are rotated with a predetermined meshing load applied, and the rotation angles of the first gear and the second gear are respectively determined by a rotary encoder. A meshing transmission error measuring device for a gear transmission mechanism that detects a deviation of the rotation angle by measuring is proposed.

  For example, in the meshing transmission error measuring device disclosed in Patent Document 1, the drive gear and the driven gear meshing with each other are given speed-controlled rotation by an input side motor coupled to the drive gear, and are coupled to the driven gear side. Measure the meshing transmission error by detecting each rotation angle with a rotary encoder and calculating the mutual phase difference while giving the load torque controlled by the output side motor. The output side motor is connected to the rotary encoder via an inertial body. Here, for example, since the output side motor is torque controlled, its rotational fluctuation cannot be controlled. Therefore, the output side motor is connected via the inertial body as described above so that the influence of the rotation fluctuation of the motor can be removed and the slight fluctuation of the rotation can be measured.

Japanese Patent No. 3135383 Japanese Patent No. 3085057

  By the way, in the meshing transmission error measuring device of Patent Document 1, the output side motor and the rotary encoder are connected via an inertial body, so that the measured value of the rotational fluctuation caused by the output side motor that gives load torque is obtained. Although the influence can be eliminated, on the other hand, the inertial body for removing the noise of the rotation fluctuation due to the motor, which is sufficiently large compared with the minute fluctuation of the rotation due to the gear meshing transmission error, is the gear to be originally measured. There was a risk of removing even slight rotational fluctuations due to.

  With respect to this problem, in the meshing transmission error measuring device disclosed in Patent Document 2, in a driving gear and a driven gear meshing with each other, a load weight is suspended from the rotation shaft of each gear, thereby allowing each gear to be moved. Can always apply a constant load torque, making it possible to detect a rotation error with high accuracy. However, in the meshing transmission error measuring device of Patent Document 2, the load weight rises or falls with the rotation of the rotary shaft, but there is a problem that continuous measurement cannot be performed because of the movement amount of the rise or fall. It was.

  The present invention has been made in the background of the above circumstances, and the object of the present invention is to measure the meshing transmission error with high accuracy without being affected by torque fluctuation or rotation fluctuation, and continuously. An object of the present invention is to provide a meshing transmission error measuring device that can be measured automatically.

  In order to achieve the above object, the gist of the invention according to claim 1 is as follows: (a) in a process of rotating a pair of gears to be measured while applying a constant load torque to a pair of gears to be measured that mesh with each other. In a meshing transmission error measuring method for measuring a meshing transmission error of the gear to be measured, (b) a first constant pulley that rotates around the first axis together with the gear to be measured, and a first control pulley that rotates around the first axis. And (c) winding a flexible endless annular power transmission wire around the first constant pulley and the second constant pulley, and (d). Hanging a movable pulley having a predetermined load weight on one of the power transmission wires in a state of being wound around between the first constant pulley and the second constant pulley, (E) the first constant pulley and The constant load torque is applied by driving the rotation control motor so that a slack is always formed on the other of the two power transmission wires laid between two constant pulleys. To do.

  According to a second aspect of the present invention, (a) a process of rotating a pair of gears to be measured while applying a constant load torque from a pair of torque applying devices to a pair of gears to be measured that mesh with each other. In the meshing transmission error measuring device that measures the meshing transmission error of the gear to be measured, (b) the torque applying device is (c) a first constant pulley that rotates around the first axis together with the gear to be measured; (D) a second constant pulley that is driven to rotate around a second axis parallel to the first axis by a rotation control motor; and (e) a coil that is wound around the first constant pulley and the second constant pulley. A flexible endless annular power transmission wire, and (f) of the power transmission wire in a state where two are wound between the first constant pulley and the second constant pulley so as to be bridged between them. Predetermined on one side A movable pulley having a load, and (g) the other of the power transmission wires spanned between the first constant pulley and the second constant pulley in order to apply the constant load torque. A rotation drive control device that drives the rotation control motor so as to form a slack, and (h) adjusting the pair of load weights as appropriate, so that the pair of gears to be measured are stationary in a non-operating state. It is characteristically balanced.

  According to a third aspect of the present invention, there is provided (a) a torque applying device provided on each rotating shaft of a transmission having a pair of output shafts output by an input shaft and a differential device. In the mesh transmission error measuring device that measures the mesh transmission error of the transmission in the process of rotating the input shaft and the pair of output shafts while applying a constant load torque from (b), (b) (A) a first constant pulley that rotates about the axis together with the respective rotation shafts; (d) a second constant pulley that is rotated around a second axis parallel to the rotation axis by a rotation control motor; e) a flexible endless annular power transmission wire wound around the first constant pulley and the second constant pulley; and (f) by being wound between the first constant pulley and the second constant pulley. 2 between A moving pulley having a predetermined load weight hung on one of the power transmission wires in a state of being bridged; and (g) the first constant pulley and the second pulley to apply the constant load torque. A rotation drive control device for driving the rotation control motor so that a slack is always formed on the other of the two power transmission wires laid between the fixed pulleys, and (h) each rotation The transmission is statically balanced in a non-operating state by appropriately adjusting the weight of a load weight provided on the shaft.

  According to a fourth aspect of the present invention, there is provided the meshing transmission error measuring device according to the second or third aspect, wherein a reduction gear is connected to the rotation control motor.

  According to the meshing transmission error measuring method of the invention according to claim 1, a predetermined load weight is applied to one of the two flexible endless annular power transmission wires wound around the first constant pulley and the second constant pulley. The first constant pulley is rotated by a rotation imparting device such as a motor, for example, by driving a rotation control motor so that a slack is always formed on the other of the other power transmission wires. At the same time, the second constant pulley is rotated in the same manner by the rotation control motor, and the other power transmission wire is always slackened to enable continuous rotation. In addition, a predetermined load torque is always applied to the gear to be measured by the moving pulley and the load weight, and the other power transmission wire is always loosened to prevent fluctuations in the load torque due to the other power transmission wire. Therefore, continuous measurement can be performed in a state where there is almost no influence such as torque fluctuation.

  Further, according to the meshing transmission error measuring device of the invention according to claim 2, the pair of torque applying devices includes two flexible endless annular rings wound around the first constant pulley and the second constant pulley, respectively. For example, by rotating a motor pulley having a predetermined load weight on one of the power transmission wires and driving the rotation control motor so that a slack is always formed on the other of the other power transmission wires, for example, rotation of the motor or the like The applying device rotates the first constant pulley and the rotation control motor to rotate the second constant pulley in the same manner, and the other power transmission wire is always slack so that continuous rotation is possible. Also, a predetermined load torque is always applied to the gear to be measured by a moving pulley and a load weight, and the other power transmission wire is always loosened to prevent fluctuations in the load torque due to the other power transmission wire. Has been. Further, the pair of gears to be measured is statically balanced by appropriately adjusting the load weights of the pair of torque applying devices. By doing so, for example, when a pair of gears to be measured is rotated by a rotation applying device such as a motor, a pair of torque applying devices always applies a load torque only to the torque applying device to the pair of measured gears, In addition, continuous measurement is possible.

  According to the meshing transmission error measuring device of the invention according to claim 3, the torque applying devices provided on the respective rotating shafts are respectively wound around the first constant pulley and the second constant pulley. By driving a rotation control motor so that a slack is always formed on the other of the other power transmission wires, a flexible pulley having a predetermined load weight is mounted on one of the flexible endless annular power transmission wires. For example, the first constant pulley is rotated by the rotation imparting device such as a motor, and the second constant pulley is rotated by the rotation control motor in the same manner, and the other power transmission wire is always slack so that continuous rotation is possible. Become. Also, a predetermined load torque is always applied to the gear to be measured by a moving pulley and a load weight, and the other power transmission wire is always loosened to prevent fluctuations in the load torque due to the other power transmission wire. Has been. Further, the transmission is balanced by appropriately adjusting the load weight of the torque applying device provided on each rotating shaft. In this way, when the transmission is rotated by a rotation applying device such as a motor, for example, each torque applying device always applies a load torque only to the torque applying device to each rotating shaft, and continuously. Measurement is possible.

  Further, according to the meshing transmission error measuring device of the invention of claim 4, the output of the rotation control motor can be supplemented by connecting the speed reduction device to the rotation control motor, and the rotation control motor is made smaller. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a simplified diagram of a gear meshing transmission error measuring apparatus 10 to which the present invention is applied. The meshing transmission error measuring device 10 includes a first main shaft 12 rotatably supported by a bearing (not shown) and a first counter shaft 14 arranged in parallel to the first main shaft 12 and rotatably supported by a bearing (not shown). I have. A first test gear 16 is attached to the first main shaft 12 in a relatively non-rotatable manner, while a second test gear 18 is attached to the first counter shaft 14 in a state in which the first test gear 16 is engaged with the first test gear 16 in a relatively non-rotatable manner. It has been. The inter-axis distance between the first main shaft 12 and the first counter shaft 14 is set to the center distance between the pair of first test gear 16 and second test gear 18, and the first test gear 16 and the second test gear. 18 are detachably attached to the first main shaft 12 and the first counter shaft 14, respectively. The first main shaft 12 is provided with a first main shaft fixed pulley 20 that rotates around the first main shaft 12 together with the first test gear 16 so as not to be relatively rotatable. The first test gear of the first main shaft 12 A drive motor 22 is connected to the opposite end of 16, and a rotary encoder 17 for detecting a rotation angle is incorporated between the first main shaft fixed pulley 20 and the first test gear 16. ing. In addition, a second main shaft fixed pulley 26 that is operatively connected to the first main shaft fixed pulley 20 by the power transmission wire 24 made of a string, a wire, or the like is bridged is arranged in parallel with the first main shaft 12. A first rotation control motor 28 is connected via the second main shaft 27. Here, a controllable motor such as a synchronous motor is used as the drive motor 22 and the first rotation control motor 28. The first test gear 16 and the second test gear 18 of the present embodiment correspond to a pair of gears to be measured according to the present invention, and the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26 are It corresponds to the first constant pulley and the second constant pulley of the present invention, the first main shaft 12 and the second main shaft 27 correspond to the first shaft and the second shaft of the present invention, and the first rotation control The motor 28 corresponds to the rotation control motor of the present invention.

  FIG. 2 is an arrow view of the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26 as viewed from the direction of the arrow A. Here, the first main shaft fixed pulley 20 is connected to the drive motor 22, and the second main shaft fixed pulley 26 is connected to the first rotation control motor 28, and the diameters of the constant pulleys are equal to each other. . A flexible endless annular power transmission wire 24 is wound around the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26 and is operatively connected by the power transmission wire 24. Here, of the two power transmission wires 24 wound around the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26, the power transmission wire on the side indicated by the solid line 24, a first movable pulley 29 having a first load weight 30 is hung. On the other hand, of the two power transmission wires 24 that are stretched around the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26, the power transmission wire 24 on the side indicated by the broken line is shown. A slack is always formed in. In addition, the 1st dynamic pulley 29 of a present Example respond | corresponds to the dynamic pulley of this invention, and the 1st load weight 30 respond | corresponds to the load weight of this invention.

  Returning to FIG. 1, the first countershaft fixed pulley 32 that rotates around the first countershaft 14 together with the second test gear 18 is not rotatable relative to the end of the first countershaft 14 opposite to the second test gear 18. A rotary encoder 33 is incorporated between the second test gear 18 and the first countershaft fixed pulley 32. Further, a second countershaft fixed pulley 36 operatively connected to the first countershaft fixed pulley 32 by the power transmission wire 24 is arranged, and the second countershaft 37 parallel to the first countershaft 14 is connected via the second countershaft 37. A rotation control motor 38 is connected. Here, a controllable motor such as a synchronous motor is used as the second rotation control motor 38. The first countershaft fixed pulley 32 and the second countershaft fixed pulley 36 of the present embodiment correspond to the first constant pulley and the second constant pulley of the present invention, and the first countershaft 14 and the second countershaft 14 37 corresponds to the first axis and the second axis of the present invention, and the second rotation control motor 38 corresponds to the rotation control motor of the present invention.

  FIG. 3 is an arrow view of the first countershaft fixed pulley 32 and the second countershaft fixed pulley 36 as seen from the direction of the arrow B. Here, the first countershaft fixed pulley 32 is connected to the first countershaft 14, and the second countershaft fixed pulley 36 is connected to the second rotation control motor 38. The dimensions are equal. A power transmission wire 24 is wound around the first countershaft fixed pulley 32 and the second countershaft fixed pulley 36 and is operatively connected by the power transmission wire 24. Here, of the two power transmission wires 24 wound around the first counter shaft fixed pulley 32 and the second counter shaft fixed pulley 36, the power transmission wire on the side indicated by the solid line 24, a second movable pulley 40 having a second load weight 42 is suspended. On the other hand, of the two power transmission wires 24 that are stretched between the first countershaft fixed pulley 32 and the second countershaft fixed pulley 36, the power transmission wire 24 on the side indicated by the broken line. Always has a slack. In addition, the 2nd dynamic pulley 40 of a present Example respond | corresponds to the dynamic pulley of this invention, and the 2nd load weight 42 respond | corresponds to the load weight of this invention.

  In addition, when the first rotation control motor 28, the second rotation control motor 38, and the drive motor 22 are not operated, the first load weight 30 and the second load weight are set so that the meshing transmission error measuring device 10 is statically balanced. The mass of 42 is adjusted respectively. That is, the masses of the first load weight 30 and the second load weight 42 are adjusted so that the reaction forces of the first test gear 16 and the second test gear 18 that act by meshing with each other become equal. For example, when the diameters of the first main shaft fixed pulley 20 and the first counter shaft fixed pulley 32 are equal and the masses of the first moving pulley 29 and the second moving pulley 40 are equal, the first load weight 30 and the second weight The ratio with the load weight 42 is set to be equal to the ratio between the pitch radius of the first test gear 16 and the pitch radius of the second test gear 18. The ratio of the diameter of the first main shaft fixed pulley 20 to the diameter of the first countershaft fixed pulley 32 is equal to the ratio of the pitch radius of the first test gear 16 and the pitch radius of the second test gear 18. The masses of the first load weight 30 and the second load weight 42 can be made equal.

  Further, the meshing transmission error measuring device 10 is controlled by the electronic control device 44. For example, when the meshing transmission error measuring device 10 is operated by the drive motor 22, the rotational speed of the drive motor 22 is detected by the rotary encoder 17, and the first rotation control motor 28 is obtained by the rotary encoder 17 by the electronic control device 44. It is synchronized so that it becomes the same number of rotations. That is, the rotation speed of the drive motor 22 and the rotation speed of the first control motor 28 are synchronized. Here, as shown in FIG. 2, the first main shaft fixed pulley 20 and the second main shaft fixed pulley 26 have the same diameter and are rotated at the same rotational speed. The moving speed of the second main shaft pulley 26 is equal to the moving speed of the power transmission wire 24, and the position of the first moving pulley 29 and the slack shape of the power transmission wire 24 are not changed continuously. It can be rotated. Furthermore, in the case of measuring for a long time, the power transmission wire 24 is not loosened due to a slight shift in the rotational speed, and the position of the first moving pulley 29 may move up and down, but is provided on the first moving pulley 29. A position detection sensor (not shown) sequentially detects the position of the first movable pulley 29 and inputs it to the electronic control unit 44. Based on this information, the electronic control unit 44 suitably controls the drive motor 22 and the first rotation control motor 28 so that the position of the first movable pulley 29 is always kept constant, and the power transmission wire 24 is Always forms a slack. The first main shaft fixed pulley 20, the second main shaft fixed pulley 26, the power transmission wire 24, the first moving pulley 29, the first load weight 30, and the electronic control device 44 constitute a torque applying device 46. The Further, the electronic control device 44 of this embodiment corresponds to the rotational drive control device of the present invention.

  Similarly, the first counter gear 14 is rotated by the rotation of the first test gear 16 and the second test gear 18 by the operation of the drive motor 22. The rotation speed is detected by the rotary encoder 33, and the second counter gear 14 is rotated. The rotation control motor 38 is synchronized by the electronic control unit 44 so as to have the same rotation speed as that obtained by the rotary encoder 33. In other words, the rotation speed of the first counter shaft 14 and the rotation speed of the second rotation control motor 38 are synchronized with each other. Here, as shown in FIG. 3, since the first countershaft fixed pulley 32 and the second countershaft fixed pulley 36 have the same diameter and are rotated at the same rotational speed, the first countershaft fixed pulley 32 is used as a power transmission wire. 24 and the speed at which the second countershaft fixed pulley 36 moves the power transmission wire 24 are equal, and the position of the second moving pulley 40 and the slack shape of the power transmission wire 24 are not changed continuously. Can be rotated. Further, in the case of measuring for a long time, the power transmission wire 24 is not loosened due to a slight rotational deviation, and the position of the second movable pulley 40 may move up and down, but it is provided on the second movable pulley 40. A position detection sensor (not shown) sequentially detects the position of the second movable pulley 40 and inputs it to the electronic control unit 44. Based on this information, the electronic control unit 44 suitably controls the second rotation control motor 38 so that the position of the second pulley 40 is always kept constant and the power transmission wire 24 is always slack. It is formed. The first countershaft fixed pulley 32, the second countershaft fixed pulley 36, the power transmission wire 24, the second moving pulley 40, the second load weight 42, and the electronic control device 44 constitute a torque applying device 48. The

  In the meshing transmission error measuring device 10 configured as described above, when the device is operated at a low speed by the drive motor 22, the first test gear 16 and the second test gear 18 are balanced in a meshed state. No reaction force is generated in the motor 22, and the load torque applied to the first test gear 16 and the second test gear 18 is only the load torque applied by the torque applying devices 46 and 48 provided on the respective rotary shafts. Specifically, a product of half the load of the first moving pulley 29 and the first load weight 30 and the radial dimension of the first main shaft fixed pulley 20 is applied to the first test gear 16 as a load torque. . Similarly, the product of the half load of the load of the second moving pulley 40 and the second load weight 42 and the radial dimension of the first countershaft fixed pulley 32 is applied to the second test gear 18 as a load torque. Thus, by measuring the respective rotation angles by the encoders 17 and 33 while driving the apparatus by the drive motor 22, the meshing transmission error can be detected from the phase shift of the rotation angles.

  As described above, according to the present embodiment, a load torque is applied to the first test gear 16 by the torque applying device 46, and a load torque is applied to the second test gear 18 by the torque applying device 48. By adjusting so that the first test gear 16 and the second test gear 18 are statically balanced with each other in the operating state, the load torque generated in each test gear is only due to the torque applying devices 46 and 48. Further, measurement is possible continuously because of the structure of the torque applying devices 46 and 48, and torque fluctuation hardly occurs, so that measurement can be performed with high accuracy.

  Next, another embodiment of the present invention will be described. In the following description, parts common to those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 4 is a simplified diagram of a meshing transmission error measuring device 50 according to another embodiment of the present invention. In this embodiment as well, the meshing transmission error measuring device 50 is controlled by an electronic control device (not shown) in the same manner as in the previous embodiment. As shown in FIG. 4, the meshing transmission error measuring device 50 is obtained by providing a reduction gear to the above-described meshing transmission error measuring device 10. Specifically, the reduction gear 52 is interposed between the first rotation control motor 28 and the second main shaft fixed pulley 26, whereby the rotation of the first rotation control motor 28 is decelerated. On the other hand, the reduction gear 54 is interposed between the second countershaft fixed pulley 36 and the second rotation control motor 38, whereby the rotation of the second rotation control motor 38 is decelerated. Further, since the other configuration and operation of the meshing transmission error measuring device 50 are the same as those of the above-described meshing transmission error measuring device 10, the same effect can be obtained. Note that the rotation speeds of the first rotation control motor 28 and the second rotation control motor 38 are determined in consideration of the reduction ratios of the speed reducers 52 and 54.

  As described above, according to the above-described embodiment, the meshing transmission error measuring device 50 can measure continuously with high accuracy similarly to the above-described meshing transmission error measuring device 10, and the speed reducer 52. The reduction force 54 assists the rotational force of the first rotation control motor 28 and the second rotation control motor 38. Thus, the torque shortage of the first rotation control motor 28 and the second rotation control motor 38 can be compensated, and the first rotation control motor 28 and the second rotation control motor 38 can be made compact.

  Next, still another embodiment of the present invention will be described. FIG. 5 is a simplified diagram of a meshing transmission error measuring device 70 that is still another embodiment of the present invention. In this embodiment as well, the meshing transmission error measuring device 70 is controlled in the same manner as in the above-described embodiment by an electronic control device (not shown). As shown in FIG. 5, the test gear of the meshing transmission error measuring device 70 is a pair of bevel gears 72 that mesh with each other, and the first main shaft 12 and the first counter shaft 14 are orthogonal to each other. Here, since the other configuration and operation of the meshing transmission error measuring device 70 are the same as those of the meshing transmission error measuring device 10 described above, the same effect can be obtained.

  As described above, according to the above-described embodiment, the meshing transmission error measuring device 70 can measure continuously with high accuracy similarly to the above-described meshing transmission error measuring device 10, and the bevel gear Measurement is possible even with a gear such as a hypoid gear or the like whose rotational axis changes vertically.

  Next, still another embodiment of the present invention will be described. FIG. 6 is a simplified diagram of a meshing transmission error measuring device 80 for a transmission 82 according to still another embodiment of the present invention. In this embodiment as well, the meshing transmission error measuring device 80 is controlled in the same manner as in the above-described embodiment by an electronic control device (not shown). As shown in FIG. 6, the transmission 82 is a front-wheel drive transmission 82, and a pair of outputs of the output shafts 86 and 88 are provided by an input shaft 84 and a differential device (not shown) in the transmission 82. And a shaft. Thus, the meshing transmission error measuring device 80 is provided with three torque applying devices, that is, a torque applying device 90 provided on the input shaft 84 and torque applying devices 92 and 94 provided on the output shafts 86 and 88. A rotary encoder 96 is incorporated in the main body.

  Further, the torque applying device 80 has the same structure as that shown in FIG. 2, the torque applying devices 92 and 94 have the same structure as that shown in FIG. 3, and the drive motor 22 is attached to the shaft end of the output shaft 86. It is connected. Here, the masses of the load weights of the torque applying devices 90, 92, and 94 are adjusted in consideration of the gear ratio of the transmission 82 so that they can be statically balanced when the meshing transmission error measuring device 80 is not operating. The Further, since the other configuration and operation of the meshing transmission error measuring device 80 are the same as those of the meshing transmission error measuring device 10 described above, the same effect can be obtained.

  As described above, according to the above-described embodiment, the meshing transmission error measuring device 80 can continuously measure with high accuracy in the same manner as the above-described meshing transmission error measuring device 10. Even if the number of measurement axes increases as in 82, it is possible to easily measure by increasing the number of torque applying devices and adjusting each load weight in the same manner as in the previous embodiment.

  As mentioned above, although the Example of this invention was described in detail based on drawing, this invention is applied also in another aspect.

  For example, although the position of the drive motor 22 of the meshing transmission error measuring device 10 is provided on the first main shaft 12, it can also be provided on the first counter shaft 14 side. That is, the drive motor 22 itself is not a motor involved in applying torque, but is for rotating the apparatus. Therefore, the drive motor 22 can be freely provided and implemented within a range in which no contradiction occurs in the apparatus. In other embodiments, the position of the drive motor 22 can be similarly changed. In the present embodiment, the drive motor 22 is provided as a drive source. However, the drive motor 22 is not particularly required, and can be implemented by using another drive source such as manual operation.

  In the above-described embodiment, the first main shaft fixed pulley 20 and the second main shaft fixed pulley have the same diameter, but the present invention can be implemented even if the diameters are different. Similarly, the first countershaft fixed pulley 32 and the second countershaft fixed pulley 36 can be implemented even if the diameter dimensions are different.

  Moreover, in the above-mentioned Example, although the power transmission wire 24 was comprised with the string, the wire, etc., it can also be implemented with a cable, a rope, a V belt, a round belt, a flat belt, etc. Further, in order to suppress slipping, the fixed pulley can be constituted by a sprocket, and the power transmission wire 24 can be changed to a chain.

  In the above-described embodiment, each first pulley and the gear to be measured are arranged on the concentric shaft, but it is not necessary to arrange them on the concentric shaft, and it operates via a belt or a chain. It can also arrange | position so that it may connect. That is, there is no problem as long as it is operatively connected so as to be able to apply a constant torque.

  In the above-described embodiment, the reduction gears 52 and 54 are provided in the meshing transmission error measuring device 50. However, the reduction gears may be integrated with a rotation control motor.

  Further, in the above-described embodiment, the meshing transmission error measuring device 70 measures the bevel gear, but the meshing transmission error measuring device of the present invention can also be applied to a gear of another aspect such as a screw gear. .

  In the above-described embodiment, the transmission 82 is a front wheel drive type transmission 82, but the present invention can be applied to other types of transmissions such as a rear wheel drive type. .

  In the above-described embodiment, the continuous measurement of the meshing transmission error measuring device 10 is enabled by controlling the positions of the movable pulleys 29 and 40. However, the continuous measurement is performed by controlling the position of the slack of the power transmission wire 24. Can also be made possible.

  The above description is only an embodiment, and the present invention can be implemented in variously modified and improved forms based on the knowledge of those skilled in the art.

It is a simplification figure of the meshing transmission error measuring device to which the present invention was applied. It is the arrow line view which looked at the torque provision apparatus from the arrow A direction. It is the arrow line view which looked at the torque provision apparatus from the arrow B direction. It is another simplification figure of the meshing transmission error measuring device to which the present invention was applied. FIG. 6 is still another simplified diagram of a meshing transmission error measuring device to which the present invention is applied. FIG. 6 is still another simplified diagram of a meshing transmission error measuring device to which the present invention is applied.

Explanation of symbols

  10, 50, 70, 80: meshing transmission error measuring device 12: first main shaft (first shaft) 14: first counter shaft (first shaft) 16: first test gear (measured gear) 18: second Test gear (measuring gear) 20: First main pulley (first pulley) 24: Power transmission wire 26: Second main shaft pulley (second pulley) 27: Second main shaft (second shaft) 28: First rotation control motor (rotation control motor) 29: First moving pulley (dynamic pulley) 30: First load weight (load weight) 32: First counter shaft fixed pulley (first constant pulley) 36: Second Counter shaft fixed pulley 37: second counter shaft (second shaft) 38: second rotation control motor (rotation control motor) 40: second moving pulley (moving pulley) 42: second load weight (load weight) 44: electronic Control device (rotary drive control device) 46, 48 Torque applying device 52, 5 : Reducer 82: transmission 84: Input shaft 86, 88: output shaft 90, 92, 94: torque applying device

Claims (4)

A meshing transmission error measuring method for measuring a meshing transmission error of the gear to be measured in a process of rotating the pair of gears to be measured while applying a constant load torque to the pair of gears to be measured that mesh with each other,
A first constant pulley that rotates around the first axis together with the gear to be measured, and a second constant pulley that is driven to rotate around a second axis parallel to the first axis by a rotation control motor,
A flexible endless annular power transmission wire is wound around the first constant pulley and the second constant pulley,
Hanging a movable pulley having a predetermined load weight on one of the power transmission wires in a state of being wound around between the first constant pulley and the second constant pulley,
By driving the rotation control motor so that a slack is always formed on the other of the two power transmission wires spanned between the first constant pulley and the second constant pulley, the constant load torque is obtained. And a meshing transmission error measuring method. A meshing transmission error measuring device that measures a meshing transmission error of a gear to be measured in a process of rotating the pair of gears to be measured while applying a constant load torque from a pair of torque applying devices to a pair of gears to be measured that mesh with each other. There,
The torque applying device includes:
A first constant pulley that rotates about the first axis together with the gear to be measured;
A second constant pulley that is rotationally driven around a second axis parallel to the first axis by a rotation control motor;
A flexible endless annular power transmission wire wound around the first constant pulley and the second constant pulley;
A moving pulley having a predetermined load weight hung on one of the power transmission wires in a state of being wound between the first fixed pulley and the second fixed pulley and being two-wound between them. When,
In order to apply the constant load torque, the rotation control motor is configured such that a slack is always formed on the other of the two power transmission wires spanned between the first constant pulley and the second constant pulley. A rotation drive control device for driving
The meshing transmission error measuring device characterized in that the pair of gears to be measured are statically balanced in an inoperative state by appropriately adjusting the pair of load weights. An input shaft and a pair of output shafts are applied while applying a constant load torque from a torque applying device provided on each rotation shaft of a transmission having a pair of output shafts output by an input shaft and a differential device. A meshing transmission error measuring device for measuring a meshing transmission error of the transmission in the process of rotating,
The torque applying device includes:
A first constant pulley that rotates about the axis together with the respective rotation shafts;
A second constant pulley that is driven to rotate about a second axis parallel to the rotation axis by a rotation control motor;
A flexible endless annular power transmission wire wound around the first constant pulley and the second constant pulley;
A moving pulley having a predetermined load weight hung on one of the power transmission wires in a state of being wound between the first fixed pulley and the second fixed pulley and being two-wound between them. When,
In order to apply the constant load torque, the rotation control motor is configured such that a slack is always formed on the other of the two power transmission wires spanned between the first constant pulley and the second constant pulley. A rotation drive control device for driving
The meshing transmission error measuring device characterized in that the transmission is statically balanced in a non-operating state by appropriately adjusting the weights of the load weights provided on the respective rotating shafts.   The meshing transmission error measuring device according to claim 2 or 3, wherein a reduction gear is connected to the rotation control motor.

Images