Angle measurement tool and method

Abstract

The invention discloses an angle measuring tool and method, and relates to a dental bending machine testing device. Comprising a test bench, the test bench is provided with a detection assembly, the detection assembly comprises a transmission part and a measurement part, the top of the transmission part is provided with a placement hole for insertion of a driving shaft of a bending machine motor, the driving shaft is inserted into the placement hole, and the bending machine motor drives the transmission part to swing back and forth when started; the measuring part is arranged at the bottom of the transmission part and is connected with the transmission part, and when the transmission part swings back and forth, the measuring part swings back and forth synchronously under the driving of the transmission part. The device has the advantage of being more convenient to use.

Description

Technical Field

[0001] The invention relates to a dental bender testing device, in particular to an angle measuring tool and method. Background Art

[0002] Dental contra-angle machine is a commonly used instrument in dental surgery, and the contra-angle machine motor is one of the core components of the dental contra-angle machine. Its durability and accuracy directly affect the performance of the contra-angle machine. Therefore, the contra-angle machine motor often needs to be tested before leaving the factory. Therefore, it is necessary to provide a test device that can test the swing angle and speed of the contra-angle machine motor. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an angle measurement tool and method.

[0004] The present invention is implemented by the following technical solutions:

[0005] The present application discloses an angle measuring tool, including a test bench, a detection assembly is provided on the test bench, the detection assembly includes a transmission part and a measuring part, a placement hole for inserting a driving shaft of a bending machine motor is provided on the top of the transmission part, the driving shaft is inserted into the placement hole, and the bending machine motor drives the transmission part to swing back and forth when it is started;

[0006] The measuring part is arranged at the bottom of the transmission part and connected with the transmission part. When the transmission part reciprocates, the measuring part is driven by the transmission part to reciprocate synchronously.

[0007] The transmission part includes a first coupling, the first coupling is rotatably connected to the test bench via a rotating shaft, one end of the rotating shaft is fixedly connected to one end of the first coupling, and the other end of the rotating shaft is rotatably connected to the test bench;

[0008] The placement hole is opened at the other end of the first coupling, the rotating shaft is perpendicular to the end surface of the test bench, and the measuring part is arranged between the first coupling and the test bench and is coaxially arranged with the first coupling.

[0009] The measuring part includes a test disc and a pointer, the pointer is sleeved on the rotating shaft and is coaxial with the first coupling, the test disc is sleeved on the rotating shaft and placed below the pointer and fixed on the test bench, and the pointer swings back and forth synchronously when the first coupling is driven by the bending machine motor to swing back and forth;

[0010] The test disc is evenly provided with scales along the circumferential direction. The measuring part further comprises a high-speed camera. The lens of the high-speed camera faces the pointer and is used to photograph the reciprocating swing amplitude of the pointer.

[0011] The test bench is also provided with a support assembly, which is arranged on one side of the detection assembly, and includes a translation adjustment part and a height adjustment part, and the translation adjustment part is fixed on the test bench and arranged along the width direction of the test bench;

[0012] The height adjustment part is arranged on the translation adjustment part and is driven by the translation adjustment part to reciprocate along the width direction of the test bench, and the height adjustment part is perpendicular to the end surface of the test bench;

[0013] The measuring part is arranged on the test bench, and the input end of the measuring part is connected to the transmission part. The transmission part is perpendicular to the end surface of the test bench and parallel to the height adjustment part. The bending machine motor is placed on the height adjustment part and is driven by the height adjustment part to approach or move away from the test bench. When the bending machine motor approaches the test bench, the driving shaft is inserted into the placement hole of the transmission part.

[0014] The translation adjustment part comprises a translation adjustment seat, the translation adjustment seat is fixed on the test bench and arranged along the length direction of the test bench, a translation screw is arranged on the translation adjustment seat, the translation screw is rotatably connected to the translation adjustment seat, a translation slider is sleeved on the translation screw, and when the translation screw rotates, the translation slider reciprocates along the width direction of the test bench, and the height adjustment part is fixed on the translation slider and driven to reciprocate by the translation slider;

[0015] Alternatively, a translation rail is provided on the translation adjustment seat, the translation rail is arranged along the width direction of the test bench, the translation slider slides on the translation rail, the height adjustment part is fixed on the translation slider, and a locking piece is provided between the translation slider and the translation rail for locking the translation slider.

[0016] The height adjustment part includes a height adjustment seat, the height adjustment seat is arranged on the translation slider, the height adjustment seat is provided with a height screw, the height screw is rotatably connected to the height adjustment seat, a height slider is sleeved on the height screw, when the height screw rotates, the height slider approaches or moves away from the test bench in a direction perpendicular to the test bench, a clamp is provided on the height slider for clamping the bending machine motor, when the height slider approaches the test bench, the clamp clamps the bending machine motor and drives the driving shaft of the bending machine motor to be inserted into the placement hole;

[0017] Alternatively, a height slide rail is provided on the height adjustment seat, the height slide rail is perpendicular to the end face of the test bench, a height slider slides on the height slide rail, one end of the height slide rail is fixed on the translation slider, the height slide rail is perpendicular to the end face of the test bench, and a locking piece is provided between the height slider and the height slide rail for locking the translation slider.

[0018] The transmission part includes a pair of second couplings, which are connected by a universal joint. The second coupling at the top of the universal joint is provided with the placement hole, and the second coupling at the bottom of the universal joint is connected to the measuring part to drive the measuring part to rotate.

[0019] The measuring part comprises an angle sensor and a damper, wherein the angle sensor is arranged at the input end of the damper, and the second coupling is coaxially connected with the input end of the damper to drive the damper to move;

[0020] The test bench is provided with a signal processing device, the angle sensor is connected to the signal processing device by signal, the signal processing device comprises a processor and a display, and the angle sensor and the display are respectively connected to the processor by signal.

[0021] The present application also discloses an angle measurement method, which is implemented by using an angle measurement tool, and includes the following steps:

[0022] Preparation steps before testing: hold the contra-angle machine motor and insert the driving shaft of the contra-angle machine motor into the placement hole to ensure that it is inserted in place; start the contra-angle machine motor and press the start button of the motor. The contra-angle machine motor is in the inching state to test the connection reliability between the contra-angle machine motor and the first coupling;

[0023] A detection step, the detection step comprising:

[0024] The starting step is to long press the start button of the contra-angle machine motor to drive the first coupling to swing back, and the first coupling swings back and then drives the pointer to swing back, and observe the amplitude of the pointer swing back;

[0025] The observation step is recorded by using a high-speed camera to record the reciprocating swing of the pointer, so that the test personnel can freeze the observation.

[0026] The present application discloses another angle measurement method, which is implemented by using an angle measurement tool, and is characterized in that it includes the following steps:

[0027] Preparation step: placing the contra-angle machine motor in the fixture and clamped by the fixture, rotating the translation screw and the height screw to adjust the position of the fixture until the driving shaft of the contra-angle machine motor is inserted into the placement hole;

[0028] Testing step: starting the contra-angle machine motor, and the driving shaft of the contra-angle machine motor drives the second coupling to swing back and forth, and enters the testing stage;

[0029] Result display step: The reciprocating swing angle of the bending machine motor is measured by the angle sensor and transmitted to the controller, and the controller calculates the reciprocating swing angle of the bending machine motor and the linear speed of the bending machine motor and displays them on the display.

[0030] Compared with the prior art, the present invention connects the bending machine motor and the coupling coaxially. Specifically, the bending machine motor is inserted into the placement hole opened on the coupling. The hole is coaxial with the coupling. When the bending machine motor swings, the lower end of the coupling can be directly connected to the detection part, so that the swing of the driving shaft of the bending machine motor is converted into the synchronous swing of the coupling. The coaxial device is connected to the detection part, so that the swing angle, speed, etc. of the bending machine motor can be detected by the detection part. In one embodiment, a damper is used to simulate the actual use of the dental mobile phone (i.e., the load condition). The damping is adjustable, which can simulate both the unloaded condition of the bending machine motor and the loaded condition of the bending machine motor, thereby making the detection data more real and accurate. The reciprocating angle and reciprocating speed of the bending machine motor are measured by the sensor, and the single speed detection function is added, which can reduce the number of devices, combine multiple functions together, and make it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a first embodiment of the angle measurement tooling of the present invention;

[0032] Figure 2 It is a schematic structural diagram of a second embodiment of the angle measuring tool in the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the detection component of the second embodiment of the angle measurement tool in the present invention;

[0034] Figure 4 It is a schematic diagram of the fixture structure of the second embodiment of the angle measurement tool in the present invention;

[0035] In the figure: 1. test bench; 2. detection component; 21. transmission part; 211. first coupling; 212. second coupling; 22. measuring part; 221. test disc; 222. pointer; 223. universal joint; 224. damper; 225. angle sensor; 23. placement hole; 3. support component; 31. translation adjustment part; 311. translation adjustment seat; 312. translation slide rail; 313. translation slider; 32. height adjustment part; 321. height adjustment seat; 322. height slide rail; 323. height slider; 33. fixture; 331. clamping seat; 332. fixing splint; 333. base; 334. locking bolt; 335. rotating bolt; 336. rotating block; 4. signal processing device; 41. display. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0037] Reference Figure 1-4 An angle measuring tool comprises a test bench 1, on which a detection assembly 2 is provided. The detection assembly 2 comprises a transmission part 21 and a measuring part 22. A placement hole 23 for inserting a driving shaft of a bending machine motor is provided on the top of the transmission part 21. The driving shaft is inserted into the placement hole 23. When the bending machine motor is started, the transmission part 21 is driven to swing back and forth. The measuring part 22 is arranged at the bottom of the transmission part 21 and is connected to the transmission part 21. When the transmission part 21 swings back and forth, the measuring part 22 swings back and forth synchronously under the drive of the transmission part 21. When in use, it is connected to the transmission part 21 through the bending machine motor. The swinging of the bending machine motor is amplified, and the reciprocating swing of the transmission part 21 is used to drive the measuring part 22 to perform measurement, so as to realize the test of the bending machine motor.

[0038] Reference Figure 1 , is one of the implementations of the angle measuring tooling. In this implementation, the transmission part 21 includes a first coupling 211, and the first coupling 211 is rotatably connected to the test bench 1 through a rotating shaft. One end of the rotating shaft is fixedly connected to one end of the first coupling 211, and the other end of the rotating shaft is rotatably connected to the test bench 1. In this embodiment, the placement hole 23 is opened at the other end of the first coupling 211, the rotating shaft is perpendicular to the end face of the test bench 1, and the measuring part 22 is arranged between the first coupling 211 and the test bench 1 and is coaxially arranged with the first coupling 211.

[0039] In this embodiment, the measuring part 22 includes a test disc 221 and a pointer 222. The pointer 222 is sleeved on the rotating shaft and is coaxial with the first coupling 211. The test disc 221 is sleeved on the rotating shaft and placed below the pointer 222 and fixed on the test bench 1. When the first coupling 211 is driven by the bending machine motor to swing back and forth, the pointer 222 swings back and forth synchronously. The test disc 221 is evenly provided with scales along the circumferential direction. The measuring part 22 also includes a high-speed camera. The lens of the high-speed camera faces the pointer 222 and is used to shoot the reciprocating swing amplitude of the pointer 222. When in use, the swing of the bending machine motor is converted into the swing of the pointer 222. There is a test disc 221 below the pointer 222, so that the test angle of the pointer 222 when swinging back can be obtained. Since the pointer 222 swings at a high degree during the detection process, in order to determine the swing angle of the bending machine motor, the pointer 222 is photographed at intervals by using a high-speed camera to freeze the picture, so that the tester can observe the swing angle of the bending machine motor.

[0040] When the angle measuring tool in this embodiment is used for measurement, the following measuring method is adopted, and the measuring method includes:

[0041] Preparatory steps before the test: hold the contra-angle machine motor, insert the driving shaft of the contra-angle machine motor into the placement hole 23, and ensure that it is inserted in place; start the contra-angle machine motor, and press the start button of the motor in an inching state to test the connection reliability between the contra-angle machine motor and the first coupling 211;

[0042] A detection step, the detection step comprising:

[0043] The starting step is to long press the starting button of the contra-angle machine motor to drive the first coupling 211 to swing back, and the first coupling 211 swings back and then drives the pointer 222 to swing back, and observe the swing amplitude of the pointer 222;

[0044] In the video recording and observation step, the reciprocating swinging process of the pointer 222 is recorded by a high-speed camera to facilitate the test personnel to freeze the observation.

[0045] When in use, the swing of the contra-angle machine motor is converted into the swing of the pointer 222. There is a test disc 221 under the pointer 222, so the test angle of the pointer 222 when it swings can be obtained. Since the pointer 222 swings highly during the detection process, in order to determine the swing angle of the contra-angle machine motor, the pointer 222 is photographed at intervals using a height camera to freeze the picture, which is convenient for the tester to observe the swing angle of the contra-angle machine motor.

[0046] Reference Figure 2-4 , another embodiment is also disclosed in the present application. Since the previous embodiment requires high-speed camera shooting and manual observation, the error is relatively large. In order to reduce the error, in this embodiment, a support assembly 3 is further provided on the test bench 1. The support assembly 3 is provided on one side of the detection assembly 2. The support assembly 3 includes a translation adjustment part 31 and a height adjustment part 32. The translation adjustment part 31 is fixed on the test bench 1 and arranged along the width direction of the test bench 1.

[0047] The height adjustment part 32 is arranged on the translation adjustment part 31 and is driven by the translation adjustment part 31 to reciprocate along the width direction of the test bench 1. The height adjustment part 32 is perpendicular to the end face of the test bench 1. The measuring part 22 is arranged on the test bench 1. The input end of the measuring part 22 is connected to the transmission part 21. The transmission part 21 is perpendicular to the end face of the test bench 1 and parallel to the height adjustment part 32. The bending machine motor is placed on the height adjustment part 32 and is driven by the height adjustment part 32 to approach or move away from the test bench 1. When the bending machine motor approaches the test bench 1, the driving shaft is inserted into the placement hole 23 of the transmission part 21. The measuring part 22 no longer needs to be held by the tester for testing, but is placed on the height adjustment part 32.

[0048] Specifically, the height adjustment part 32 includes a height adjustment seat 321, which is arranged on the translation slider 313, and a height screw is arranged on the height adjustment seat 321, which is rotatably connected to the height adjustment seat 321, and a height slider 323 is sleeved on the height screw. When the height screw rotates, the height slider 323 approaches or moves away from the test bench 1 in a direction perpendicular to the test bench 1, and a clamp 33 is arranged on the height slider 323 for clamping the bending machine motor. When the height slider 323 approaches the test bench 1, the clamp 33 clamps the bending machine motor and drives the driving shaft of the bending machine motor to be inserted into the placement hole 23. The clamp 33 is used for clamping during the test, and the bending machine is more stable during the entire test process, which has less impact on the test results. The translation adjustment part 31 includes a translation adjustment seat 311, which is fixed on the test bench 1 and arranged along the length direction of the test bench 1. The translation adjustment seat 311 is provided with a translation screw, which is rotatably connected to the translation adjustment seat 311. A translation slider 313 is sleeved on the translation screw. When the translation screw rotates, the translation slider 313 reciprocates along the width direction of the test bench 1. The height adjustment part 32 is fixed on the translation slider 313 and is driven to reciprocate by the translation slider 313.

[0049] In this embodiment, the height slider 323 and the translation slider 313 can also be moved using slide rails, that is, the height slider 323 corresponds to the height slide rail 322, and the translation slider 313 corresponds to the translation slide rail 312. The height slide rail 322 is used to replace the height lead screw, and the translation slide rail 312 is used to replace the translation lead screw. The translation slide rail 312 is fixed on the translation adjustment seat 311, and is also arranged along the width direction of the test bench 1. The height slide rail 322 is also fixed on the translation slider 313 and is perpendicular to the test bench 1. The translation slider 313 is engaged with the translation slide rail 312 and slides on the translation slide rail 312, and the height slider 323 is engaged with the height slide rail 322 and can slide on the height slide rail 322. A positioning bolt is provided on both the height slider 323 and the translation slider 313. Taking the translation slider 313 as an example, a bolt hole is provided on the side wall of the translation slider 313, and the positioning bolt is inserted into the bolt hole to directly contact the side wall of the translation rail 312. The height slider 323 and the translation slider 313 use the same positioning bolt and bolt hole to achieve locking and positioning. When locking is required, the corresponding locking bolt can be tightened so that the corresponding locking bolt can be pressed against the corresponding rail to achieve the locking function.

[0050] In this embodiment, the clamp 33 can be a common clamp 33, that is, it includes a clamping seat 331, and a fixed clamping plate 332 is respectively arranged at both ends of the clamping seat 331, and the pair of fixed clamping plates 332 are parallel to each other and perpendicular to the clamping seat 331. A locking bolt 334 is passed through one of the fixed clamping plates 332, and when clamping is required, the dental contralateral machine is placed between the pair of fixed plates, and the locking bolt 334 is rotated so that the locking bolt 334 moves toward the direction of the contralateral machine and finally presses against the outer shell of the contralateral machine to clamp the contralateral machine.

[0051] Furthermore, there is a base 333 between the clamping seat 331 and the height slider 323 for fixing the clamping seat 331. Specifically, the base 333 and the height slider 323 are rotationally connected, and the base 333 and the height slider are rotationally connected. The specific solution of the rotation connection is that the base 333 and the height slider 323 can be connected by a rotating bolt 335 so that the base 333 can rotate around the rotating bolt 335, and after rotating to the corresponding position, the rotating bolt 335 is tightened to fix the relative position between the base 333 and the height slider 323, so that the base 333 cannot rotate. The clamping seat 331 can be inserted on the base 333 through a connecting shaft and can rotate, so as to facilitate the position and angle adjustment of the bending machine motors of different sizes and models so that the driving shaft of the bending machine motor can always be aligned with the placement hole 23 on the measuring part 22.

[0052] After the clamping seat 331 rotates to the right position, the limiting member provided on the height slider 323 can abut against the clamping seat 331 to limit the rotation of the clamping seat 331. The limiting member includes a rotating block 336, which is connected to the clamping seat 331 through a rotating shaft. A toggle piece is fixed to the edge of the rotating block 336, and a torsion spring is sleeved on the rotating shaft. When the rotating shaft rotates, the torsion spring accumulates force. At least one fixed groove is provided on the outer edge of the rotating block 336. When the toggle piece is toggled, the fixed groove rotates in a direction away from the clamping seat 331, and will not interfere with the rotation of the clamping seat 331. After the clamping seat 331 rotates to the right position, the toggle piece is released, and the edge of the clamping seat 331 abuts against the fixed groove to form a limiting effect on the clamping seat 331. The clamping seat 331 can be inserted on the base 333 through a connecting shaft and can rotate, so as to adjust the position and angle of the bending machine motors of different sizes so that the driving shaft of the bending machine motor can always be aligned with the placement hole 23 on the measuring part 22. The scope of use is wider.

[0053] In this embodiment, the transmission part 21 includes a pair of second couplings 212, which are connected by a universal joint 223. A placement hole 23 is provided on the second coupling 212 at the top of the universal joint 223, and the second coupling 212 at the bottom of the universal joint 223 is connected to the measuring part 22 to drive the measuring part 22 to rotate. The measuring part 22 includes an angle sensor 225 and a damper 224. The angle sensor 225 is arranged at the input end of the damper 224, and the second coupling 212 is coaxially connected to the input end of the damper 224 to drive the damper 224 to move. A signal processing device 4 is provided on the test bench 1, and the angle sensor 225 is connected to the signal processing device 4 by signal. The signal processing device 4 includes a processor and a display 41, and the angle sensor 225 and the display 41 are respectively connected to the processor signal.

[0054] In this embodiment, the damper 224 is used to simulate the actual use of the dental handpiece (i.e., the load condition). The damping is adjustable, which can simulate both the unloaded condition and the loaded condition of the contra-angle motor, thereby making the detection data more real and accurate. The reciprocating angle and reciprocating speed of the contra-angle motor are measured by the sensor, and the single speed detection function is added, which can reduce the number of devices, combine multiple functions, and make it more convenient to use.

[0055] When the measuring tool in this embodiment is used to test the bending machine motor, the following steps are adopted:

[0056] The preparation step is to place the bending machine motor in the clamp 33 and clamp it by the clamp 33, and rotate the translation screw and the height screw to adjust the position of the clamp 33 until the driving shaft of the bending machine motor is inserted into the placement hole 23; or directly push the translation slider 313 and the height slider 323 to adjust the position of the bending machine motor. After adjustment, the clamping seat 331 can be unlocked by pushing the toggle piece, and finally the clamping seat 331 is rotated for fine-tuning, so that the driving shaft of the bending machine motor can always be aligned with the placement hole 23, and then the position of the height slider 323 is adjusted again, so that the driving shaft of the bending machine motor can be stably inserted into the placement hole 23.

[0057] In the detection step, the bending machine motor is started, and the driving shaft of the bending machine motor drives the second coupling 212 to swing back and forth, and the test phase is entered. And the result display step: the reciprocating swing angle of the bending machine motor is measured by the angle sensor 225 and transmitted to the controller, and the reciprocating swing angle of the bending machine motor and the linear speed of the bending machine motor are calculated by the controller and displayed on the display 41.

[0058] In this embodiment, the damper 224 is used to simulate the actual use of the dental handpiece (i.e., the load condition). The damping is adjustable, which can simulate both the unloaded condition and the loaded condition of the contra-angle motor, thereby making the detection data more real and accurate. The reciprocating angle and reciprocating speed of the contra-angle motor are measured by the sensor, and the single speed detection function is added, which can reduce the number of devices, combine multiple functions, and make it more convenient to use.

[0059] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An angle measurement tool, comprising a test bench, characterized in that: The test bench is provided with a detection assembly, which includes a transmission part and a measuring part. The top of the transmission part is provided with a placement hole for inserting the drive shaft of the contra-angle machine motor. The drive shaft is inserted into the placement hole. When the contra-angle machine motor is started, the transmission part is driven to swing back and forth. The measuring part is arranged at the bottom of the transmission part and connected with the transmission part. When the transmission part reciprocates, the measuring part is driven by the transmission part to reciprocate synchronously.

2. The angle measuring tool according to claim 1, characterized in that: The transmission part includes a first coupling, the first coupling is rotatably connected to the test bench via a rotating shaft, one end of the rotating shaft is fixedly connected to one end of the first coupling, and the other end of the rotating shaft is rotatably connected to the test bench; The placement hole is opened at the other end of the first coupling, the rotating shaft is perpendicular to the end surface of the test bench, and the measuring part is arranged between the first coupling and the test bench and is coaxially arranged with the first coupling.

3. The angle measuring tool according to claim 2, characterized in that: The measuring part includes a test disc and a pointer, the pointer is sleeved on the rotating shaft and is coaxial with the first coupling, the test disc is sleeved on the rotating shaft and placed below the pointer and fixed on the test bench, and the pointer swings back and forth synchronously when the first coupling is driven by the bending machine motor to swing back and forth; The test disc is evenly provided with scales along the circumferential direction. The measuring part further comprises a high-speed camera. The lens of the high-speed camera faces the pointer and is used to photograph the reciprocating swing amplitude of the pointer.

4. The angle measuring tool according to claim 1, characterized in that: The test bench is also provided with a support assembly, which is arranged on one side of the detection assembly, and includes a translation adjustment part and a height adjustment part, and the translation adjustment part is fixed on the test bench and arranged along the width direction of the test bench; The height adjustment part is arranged on the translation adjustment part and is driven by the translation adjustment part to reciprocate along the width direction of the test bench, and the height adjustment part is perpendicular to the end surface of the test bench; The measuring part is arranged on the test bench, and the input end of the measuring part is connected to the transmission part. The transmission part is perpendicular to the end surface of the test bench and parallel to the height adjustment part. The bending machine motor is placed on the height adjustment part and is driven by the height adjustment part to approach or move away from the test bench. When the bending machine motor approaches the test bench, the driving shaft is inserted into the placement hole of the transmission part.

5. The angle measuring tool according to claim 4, characterized in that: The translation adjustment part comprises a translation adjustment seat, the translation adjustment seat is fixed on the test bench and arranged along the length direction of the test bench, a translation screw is arranged on the translation adjustment seat, the translation screw is rotatably connected to the translation adjustment seat, a translation slider is sleeved on the translation screw, and when the translation screw rotates, the translation slider reciprocates along the width direction of the test bench, and the height adjustment part is fixed on the translation slider and driven to reciprocate by the translation slider; Alternatively, a translation rail is provided on the translation adjustment seat, the translation rail is arranged along the width direction of the test bench, the translation slider slides on the translation rail, the height adjustment part is fixed on the translation slider, and a locking piece is provided between the translation slider and the translation rail for locking the translation slider.

6. The angle measuring tool according to claim 5, characterized in that: The height adjustment part includes a height adjustment seat, the height adjustment seat is arranged on the translation slider, the height adjustment seat is provided with a height screw, the height screw is rotatably connected to the height adjustment seat, a height slider is sleeved on the height screw, when the height screw rotates, the height slider approaches or moves away from the test bench in a direction perpendicular to the test bench, a clamp is provided on the height slider for clamping the bending machine motor, when the height slider approaches the test bench, the clamp clamps the bending machine motor and drives the driving shaft of the bending machine motor to be inserted into the placement hole; Alternatively, a height slide rail is provided on the height adjustment seat, the height slide rail is perpendicular to the end face of the test bench, a height slider slides on the height slide rail, one end of the height slide rail is fixed on the translation slider, the height slide rail is perpendicular to the end face of the test bench, and a locking piece is provided between the height slider and the height slide rail for locking the translation slider.

7. The angle measuring tool according to claim 4, characterized in that: The transmission part includes a pair of second couplings, which are connected by a universal joint. The second coupling at the top of the universal joint is provided with the placement hole, and the second coupling at the bottom of the universal joint is connected to the measuring part to drive the measuring part to rotate.

8. The angle measuring tool according to claim 7, characterized in that: The measuring part comprises an angle sensor and a damper, wherein the angle sensor is arranged at the input end of the damper, and the second coupling is coaxially connected with the input end of the damper to drive the damper to move; The test bench is provided with a signal processing device, the angle sensor is connected to the signal processing device by signal, the signal processing device comprises a processor and a display, and the angle sensor and the display are respectively connected to the processor by signal.

9. An angle measurement method, implemented by using an angle measurement tool as claimed in claim 3, characterized in that: The steps include: Preparatory steps before testing: Hold the contra-angle machine motor and insert the drive shaft of the contra-angle machine motor into the placement hole to ensure that it is inserted into place; Start the contra-angle machine motor and press the start button of the motor in an inching state to test the connection reliability between the contra-angle machine motor and the first coupling; A detection step, the detection step comprising: The starting step is to long press the start button of the contra-angle machine motor to drive the first coupling to swing back, and the first coupling swings back and then drives the pointer to swing back, and observe the amplitude of the pointer swing back; The observation step is recorded by using a high-speed camera to record the reciprocating swing of the pointer, so that the test personnel can freeze the observation.

10. An angle measurement method, implemented by using the angle measurement tool as claimed in claim 8, characterized in that: The steps include: Preparation step: placing the contra-angle machine motor in the fixture and clamped by the fixture, rotating the translation screw and the height screw to adjust the position of the fixture until the driving shaft of the contra-angle machine motor is inserted into the placement hole; Testing step: starting the contra-angle machine motor, and the driving shaft of the contra-angle machine motor drives the second coupling to swing back and forth, and enters the testing stage; Result display step: The reciprocating swing angle of the bending machine motor is measured by the angle sensor and transmitted to the controller, and the controller calculates the reciprocating swing angle of the bending machine motor and the linear speed of the bending machine motor and displays them on the display.

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