Gear clearance detection device

Abstract

The utility model provides a gear clearance detection device, which is applied to the field of detection devices, and is characterized in that the gear clearance detection device comprises a support frame and a detection rod which is supported on the support frame and the tail end of which is inserted into a tooth groove of a gear to be detected; the rotation driving device drives the gear to be detected to rotate back and forth, and the gear is limited by the detection rod to stop rotating after rotating to a certain angle; the torque sensing device is used for detecting the torque between the rotary driving device and the gear to be detected so as to send a signal to the controller when the torque increase of the gear is limited by the detection rod, and the controller records position data; the gear backlash detection device has the technical effects of being capable of replacing manual measurement of the gear backlash and improving the detection efficiency.

Description

Technical Field

[0001] The utility model relates to the field of detection devices, in particular to a gear clearance detection device. Background Art

[0002] Gears are a common transmission structure. When two gears are meshed, one gear can be driven to rotate to drive the other gear to rotate. When the two gears are meshed, in order to maximize their efficiency, a certain distance must be left between the gears, and this kind of gear meshing is called tooth gap. If the width of the tooth gap is not adjusted properly, it will not only make the gears make noise when meshing, but also affect many parts such as positioning and energy loss.

[0003] Therefore, after the gear processing is completed, the gear clearance needs to be measured to determine whether the gear clearance is within an appropriate range. The current common measurement method is to use tools such as micrometers or vernier calipers for manual measurement. Because there are usually many teeth on a gear, manual measurement is extremely inefficient and requires manpower. Therefore, a device for detecting gear clearance is needed to replace manual measurement and improve detection efficiency. Utility Model Content

[0004] The utility model aims to provide a gear clearance detection device, which has the advantages of replacing manual measurement of gear clearance and improving detection efficiency.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides the following technical solutions: a gear clearance detection device, comprising:

[0006] A rotation drive device, used to drive the gear to be detected to rotate forward and reverse and detect the output rotation angle;

[0007] A detection rod is arranged in the rotation path of the tooth groove of the gear to be detected and restricts the gear to be detected from continuing to rotate;

[0008] A torque sensing device, with a preset trigger value, for detecting the torque output by the rotary drive device, so as to trigger a sensing signal when the torque of the gear limited by the detection rod increases to the trigger value; and

[0009] The controller is used to receive the sensing signal output by the torque sensing device and control the rotation drive device to stop and rotate in the reverse direction, and receive the rotation angle output during the reverse rotation of the rotation drive device and calculate the gear clearance in combination with the radius of the gear.

[0010] Through the above technical solution, a torque trigger value is preset through the controller during use. The torque sensed by the torque sensing device during the normal rotation of the driving gear by the rotary drive device should be lower than the set trigger value. The rotary drive device drives the gear to rotate in one direction during use. During the rotation, the detection rod will have a hard contact with the gear, thereby preventing the gear from continuing to rotate. At this time, because the rotary drive device is still driving continuously, the torque sensed by the torque sensing device will suddenly increase. When the torque reaches the trigger value, a signal will be sent to the controller. The controller records the output rotation angle of the rotary drive device at this time, and uses this angle information as the initial value. Thereafter, the rotary drive device drives the gear to rotate in the opposite direction. After the torque sensing device transmits a signal to the controller again, the difference between the angle information output by the rotary drive device and the initial value can be used to calculate the rotation angle of the gear, and the gear gap can be calculated in combination with the radius of the gear, thereby replacing the manual measurement of the gear gap. Moreover, the detection can be completed by only driving the gear to rotate twice, thereby improving the detection efficiency.

[0011] In an embodiment of the present invention, the torque sensing device is configured as a torque sensor.

[0012] Through the above technical solution, the torque between the rotary drive device and the gear is sensed by the torque sensor.

[0013] In one embodiment of the utility model, the rotation drive device is configured as a servo motor, and a servo system used in conjunction with the servo motor detects and sends the rotation angle output by the servo motor to a controller, the output shaft of the servo motor is connected to the input end of the torque sensor, and the output end of the torque sensor is connected to the gear to be detected.

[0014] Through the above technical solution, the servo motor drives the input end of the torque sensor to rotate, and the gear is driven to rotate through the cooperation between the input end and the output end, so that the torque sensor is reasonably arranged.

[0015] In one embodiment of the utility model, it also includes a support frame and a bearing seat installed on the support frame, the bearing seat is rotatably connected to a mounting shaft for fixing the gear to be detected, and the rotation driving device drives the mounting shaft to rotate.

[0016] Through the above technical solution, after the gear is fixedly installed on the installation shaft, the gear can be driven to rotate by the installation shaft, and when replacing the detection gear, the gear can be removed separately, which is convenient for installing and replacing the gear.

[0017] In an embodiment of the present invention, the bearing seat is detachably mounted on the supporting frame.

[0018] Through the above technical solution, when detecting gears of different sizes, there will be a problem of incompatibility between the size of the bearing seat and the gear. At this time, by replacing the bearing seats with different sizes, the applicability of the device can be improved, making it suitable for tooth gap detection of more gears.

[0019] In one embodiment of the utility model, it also includes a sliding seat slidably assembled on the support frame and a first driving device that drives the sliding seat to slide back and forth. The rotation driving device and the torque sensing device are installed on the sliding seat. The sliding seat is rotatably connected to a transmission shaft driven to rotate by the rotation driving device. A transmission pin is fixed on the transmission shaft. A pin groove that cooperates with the transmission pin is opened on the installation shaft. The sliding seat slides back and forth to realize transmission or separation between the transmission shaft and the installation shaft.

[0020] Through the above technical solution, when the bearing seat is replaced, the first driving device first drives the sliding seat to retreat, so that the transmission pin on the transmission shaft is disengaged from the mounting shaft. When the bearing seat is replaced, the first driving device then drives the sliding seat to move in the direction of the bearing seat, so that the transmission pin is inserted into the pin groove again to realize the transmission between the transmission shaft and the mounting shaft, so that the rotation driving device can drive the gear to rotate again.

[0021] In one embodiment of the present invention, a vertical adjustment device is further included for driving the detection rod to slide in a vertical direction to adjust the height of the detection rod.

[0022] Through the above technical solution, when changing to measure different gears, or measuring the gaps between different teeth on the gears, the vertical adjustment device first drives the detection rod to lift, and then drives the detection rod down to match the gear again after the gear is replaced.

[0023] In one embodiment of the present invention, the vertical adjustment device is configured as an electric cylinder, a screw mechanism or a rack mechanism.

[0024] Through the above technical solution, the electric cylinder, the screw mechanism or the rack mechanism drives the detection rod to slide quantitatively in the vertical direction, so that the stopping position of the detection rod can be conveniently controlled according to the size of the detection gear.

[0025] As described above, the gear clearance detection device of the utility model has the following beneficial effects:

[0026] When in use, a torque trigger value is preset through the controller. During the normal rotation of the driving gear by the rotary drive device, the torque sensed by the torque sensing device should be lower than the set trigger value. When in use, the rotary drive device drives the gear to rotate in one direction. During the rotation, the detection rod will have a hard contact with the gear, thereby preventing the gear from continuing to rotate. At this time, because the rotary drive device is still driving, the torque sensed by the torque sensing device will suddenly increase. When the torque reaches the trigger value, a signal will be sent to the control. The controller records the output rotation angle of the rotary drive device at this time, and uses this angle information as the initial value. Thereafter, the rotary drive device drives the gear to rotate in the opposite direction. After the torque sensing device transmits a signal to the control again, the difference between the angle information output by the rotary drive device and the initial value can be used to calculate the rotation angle of the gear, and the gear gap can be calculated in combination with the radius of the gear, thereby replacing the manual measurement of the gear gap. Moreover, the detection can be completed by only driving the gear to rotate twice, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0028] Figure 2 is a schematic diagram of a detection rod according to an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the matching relationship between the installation shaft and the transmission shaft of an embodiment of the utility model.

[0030] Figure numerals: 1. support frame; 2. work table; 3. guide rod; 4. top plate; 5. bearing seat; 6. mounting shaft; 7. sliding seat; 8. first driving device; 9. rotation driving device; 10. torque sensing device; 11. coupling; 12. transmission shaft; 13. transmission pin; 14. pin groove; 15. sliding plate; 16. vertical adjustment device; 17. detection rod. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0033] See also Figure 1 The utility model provides a gear clearance detection device, comprising:

[0034] The support frame 1 and the controller, in this embodiment, the support frame 1 includes a work surface 2 arranged in the horizontal direction, a guide rod 3 arranged in the vertical direction along the length direction, and a top plate 4 fixed to the top of the guide rod 3 by screws.

[0035] See also Figure 1 , and also includes a bearing seat 5 installed on the work table 2. The bearing seat 5 is fixed to the work table 2 by screws, which makes it convenient to disassemble and replace the bearing seat 5. The bearing seat 5 is rotatably connected to a mounting shaft 6 arranged in a horizontal direction along the axial direction through a bearing. A threaded hole is opened on the mounting shaft 6. The gear to be tested is fixed to the mounting shaft 6 by screws. Bearing seats 5 of different sizes are selected according to the sizes of the gear to be tested.

[0036] See also Figure 1 , and also includes a sliding seat 7 slidably assembled on the support frame 1 and a first driving device 8 that drives the sliding seat 7 to slide back and forth. A slide rail arranged in a horizontal direction along the length direction is fixed on the work table 2 by screws, and the sliding seat 7 is slidably assembled on the slide rail. In this embodiment, the first driving device 8 is configured as a cylinder, and in other embodiments, it can also be replaced by a hydraulic cylinder, an electric cylinder, a screw mechanism or a rack mechanism. The cylinder body of the cylinder is fixed on the work table 2 by screws, and the piston rod of the cylinder is interference fit with the sliding seat 7.

[0037] See also Figure 1 and Figure 3, and also includes a rotation drive device 9 for driving the gear to be detected to rotate reciprocatingly and a torque sensing device 10 for detecting the output torque of the rotation drive device 9. The rotation drive device 9 and the torque sensing device 10 are both connected to the controller with electrical signals. The rotation drive device 9 is set as a servo motor. The servo system used in conjunction with the servo motor can record the rotation angle of the servo motor output shaft and send this angle information to the controller. The housing of the servo motor is fixed to the sliding seat 7 by screws. The torque sensing device 10 is set as a torque sensor. The output shaft of the servo motor is connected to the input end of the torque sensor through a coupling 11; a transmission shaft 12 arranged in a horizontal direction along the axial direction is also rotatably connected to the sliding seat 7 through a bearing. The transmission shaft 12 is also connected to the output shaft of the torque sensor through a coupling 11, so that the torque sensor can sense the torque output by the servo motor.

[0038] One or more transmission pins 13 are welded and fixed on the end of the transmission shaft 12 away from the rotary drive device 9, and a pin groove 14 cooperating with the transmission pin 13 is opened on the mounting shaft 6. After the transmission pin 13 is inserted into the pin groove 14, the transmission between the transmission shaft 12 and the mounting shaft 6 is realized, so that the torque sensor can detect the torque between the gear and the rotary drive device 9.

[0039] See also Figure 1 and Figure 2 , and also includes a sliding plate 15 slidably assembled on the guide rod 3 in the vertical direction and a vertical adjustment device 16 for driving the sliding plate 15 to slide. A detection rod 17 is fixed on the sliding rod by screws. Under the drive of the vertical adjustment device 16, the bottom end of the detection rod 17 is inserted into the tooth groove of the gear. In this embodiment, the vertical adjustment device 16 is set as an electric cylinder, and in other embodiments, a screw mechanism or a rack mechanism can also be used instead. The cylinder body of the electric cylinder is fixed to the top plate 4 by screws, and the piston rod is interference fit with the sliding plate 15.

[0040] The bottom of the detection rod 17 is conical, which is convenient for inserting into the tooth groove of the gear. The bottom position of the detection rod 17 is set to be spherical, so that when the detection rod 17 is against the gear, it contacts the gear through the spherical surface and reduces the contact area, thereby ensuring the accuracy of the gear clearance measurement as much as possible. The gear to be detected is driven by the rotation drive device 9 to rotate forward. When it rotates to a certain angle, the detection rod 17 makes hard contact with the gear to stop the rotation of the gear. During this process, the torque sensing device 10 detects that the torque will suddenly increase. A trigger value is preset on the torque sensing device 10. The torque sensed by the torque sensing device 10 reaches the trigger value during the increase process to trigger the sensing signal.

[0041] Brief description of the usage process: When in use, a torque trigger value is preset through the controller. When the rotary drive device 9 drives the gear to rotate normally, the torque sensed by the torque sensing device 10 should be lower than the set trigger value. When in use, the rotary drive device 9 drives the gear to rotate in one direction. During the rotation process, the detection rod 17 will have a hard contact with the gear, thereby preventing the gear from continuing to rotate. At this time, because the rotary drive device 9 is still driving continuously, the torque sensed by the torque sensing device 10 will suddenly increase. When the torque reaches the trigger value, a signal will be sent to the control. The controller records the output rotation angle of the rotary drive device at this time, and uses this angle information as the initial value. After that, the rotary drive device 9 drives the gear to rotate in the opposite direction. After the torque sensing device 10 transmits a signal to the control again, the difference between the angle information output by the rotary drive device 9 and the initial value can be used to calculate the rotation angle of the gear, and the gear gap can be calculated in combination with the radius of the gear, thereby replacing the manual measurement of the gear gap, and only the gear needs to be driven to rotate twice to complete the detection, thereby improving the detection efficiency.

[0042] In summary, the utility model can replace manual measurement of gear backlash and improve detection efficiency. Therefore, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A gear clearance detection device, characterized in that: include: A rotation drive device (9), used for driving the gear to be detected to rotate forward and reverse and detecting the output rotation angle; A detection rod (17) is arranged in the rotation path of the tooth groove of the gear to be detected and restricts the gear to be detected from continuing to rotate; A torque sensing device (10) is preset with a trigger value and is used to detect the torque output by the rotary drive device (9) so as to trigger a sensing signal when the torque of the gear is limited by the detection rod (17) and increases to the trigger value; as well as, The controller is used to receive the sensing signal output by the torque sensing device (10) and control the rotation drive device (9) to stop and rotate in the reverse direction, and receive the rotation angle output during the reverse rotation of the rotation drive device (9) and calculate the gear clearance in combination with the radius of the gear.

2. The gear clearance detection device according to claim 1, characterized in that: The torque sensing device (10) is configured as a torque sensor.

3. The gear clearance detection device according to claim 2, characterized in that: The rotation drive device (9) is configured as a servo motor. A servo system used in conjunction with the servo motor detects and sends the rotation angle output by the servo motor to a controller. The output shaft of the servo motor is connected to the input end of the torque sensor, and the output end of the torque sensor is connected to the gear to be detected.

4. The gear clearance detection device according to any one of claims 1 to 3, characterized in that: It also comprises a support frame (1) and a bearing seat (5) mounted on the support frame (1); a mounting shaft (6) for fixing the gear to be detected is rotatably connected to the bearing seat (5); and a rotation driving device (9) drives the mounting shaft (6) to rotate.

5. The gear clearance detection device according to claim 4, characterized in that: The bearing seat (5) is detachably mounted on the support frame (1).

6. The gear clearance detection device according to claim 5, characterized in that: The invention also comprises a sliding seat (7) slidably mounted on the support frame (1) and a first driving device (8) for driving the sliding seat (7) to slide back and forth, the rotary driving device (9) and the torque sensing device (10) are mounted on the sliding seat (7), a transmission shaft (12) driven to rotate by the rotary driving device (9) is rotatably connected to the sliding seat (7), a transmission pin (13) is fixed to the transmission shaft (12), a pin groove (14) cooperating with the transmission pin (13) is provided on the mounting shaft (6), and the sliding seat (7) slides back and forth to realize transmission or separation between the transmission shaft (12) and the mounting shaft (6).

7. The gear clearance detection device according to any one of claims 5 or 6, characterized in that: It also includes a vertical adjustment device (16) for driving the detection rod (17) to slide in the vertical direction to adjust the height of the detection rod (17).

8. The gear clearance detection device according to claim 7, characterized in that: The vertical adjustment device (16) is configured as an electric cylinder, a screw mechanism or a rack mechanism.

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