End face tooth contact rate detection mechanism and method

Abstract

The end face tooth contact rate detection mechanism comprises a gauge with standard end face teeth, and is characterized by further comprising a clamp for clamping the gauge and driving the gauge to turn over, a mechanical arm capable of driving the clamp to ascend, descend and translate, a controller for controlling the clamp and the mechanical arm to act and an operating rod, and the operating rod is provided with a force sensor in signal transmission connection with the controller. The controller and the control rod are respectively arranged on the clamp, the clamp is vertically arranged and rotatably arranged at the tail end of the mechanical arm, the mechanical arm drives the clamp to move under the control of the control rod, and the clamp clamps and turns over the gauge under the control of the controller. According to the end face tooth contact rate detection device, the labor intensity can be reduced, the gauge can be prevented from falling in the moving and overturning process, the gauge clamped on the clamp can be effectively prevented from colliding or bumping with a detected piece, and end face tooth contact rate detection which is high in automation level, low in labor intensity, small in safety risk and high in detection efficiency and accuracy is formed. The invention further provides an end face tooth contact rate detection method.

Description

Technical Field

[0001] This invention relates to a mechanism and method for detecting the contact rate of teeth on the end face, belonging to the field of end face tooth contact rate detection technology. Background Technology

[0002] During motor maintenance, it is necessary to test the contact rate between the pinion shaft end face teeth and the coupling end face teeth to ensure reliable meshing between them. Currently, the end face tooth contact rate testing is performed manually. Before testing, the gauge is placed in a fixed position (tooth face upwards). The part to be tested, such as the coupling or pinion shaft, is placed on a dedicated workbench (tooth face upwards). The testing process involves first cleaning the end face teeth, then applying a thin layer of red lead powder to the gauge end face teeth. Next, the gauge is manually picked up and flipped so that its end face teeth face downwards. The gauge is then moved until its end face teeth mesh with the coupling end face teeth. Finally, the gauge is lifted and placed back in the fixed position, and the red lead powder coverage on the end face teeth of the tested part is checked. The red lead powder coverage rate must be greater than 75%, indicating a contact rate greater than 75%.

[0003] Current end-face tooth contact rate testing uses manual gripping of gauges. These gauges are heavy, making manual gripping and flipping difficult and posing a risk of drop. The gauge's end-face teeth are prone to impact damage during engagement with the tested part's end-face teeth, creating potential quality issues. Furthermore, the gauge's weight means that manual gripping for end-face tooth engagement may result in incomplete engagement in a single attempt, leading to inaccurate test results. Summary of the Invention

[0004] The end face tooth contact rate detection mechanism provided by this invention reduces labor intensity and prevents gauges from falling during movement and flipping. It effectively prevents collisions or impacts between the gauges held in the fixture and the workpiece being tested. This results in a highly automated, low-labor-intensity, low-safety-risk, and highly efficient and accurate end face tooth contact rate detection system, suitable for rapid detection of end face tooth contact rates in batches of workpieces. This invention also provides a method for end face tooth contact rate detection.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A face tooth contact rate detection mechanism includes a gauge with standard face teeth, characterized in that: it further includes a clamp for holding the gauge and driving the gauge to rotate, a robotic arm that can drive the clamp to lift and translate, a controller and a joystick for controlling the movement of the clamp and the robotic arm, the joystick is equipped with a force sensor connected to the controller for signal transmission, the controller and the joystick are respectively mounted on the clamp, the clamp is vertically arranged and rotatably mounted on the end of the robotic arm, the robotic arm drives the clamp to move under the control of the joystick, and the clamp holds and rotates the gauge under the control of the controller.

[0006] Preferably, the clamp includes a horizontally arranged crossbeam with a linear guide rail fixed at the bottom, a longitudinal beam mounted on the crossbeam and guided by the linear guide rail, an end gripper mounted at the bottom of the longitudinal beam for holding a gauge, a flipping power cylinder mounted on the longitudinal beam to drive the end gripper to flip, and a clamping power cylinder mounted on the crossbeam to drive the longitudinal beam to move on the linear guide rail. There are two longitudinal beams, and the end grippers on the two longitudinal beams are arranged opposite each other. The clamping power cylinder is mounted on the crossbeam. The two end grippers move closer or further apart as the clamping power cylinder extends and retracts. The clamping power cylinder and the flipping power cylinder are respectively connected to a controller. An angle sensor connected to the controller is mounted on the end gripper.

[0007] Preferably, the gauge is cylindrical, with a standard end face tooth at one end and an outwardly protruding ring in the middle. The end gripper includes a main plate rotatably mounted on the lower end of the longitudinal beam and connected to the tilting power cylinder, and clamping plates fixed at both ends of the main plate. A clamping groove that mates with the protruding ring is formed between the two clamping plates. An arc-shaped groove that mates with the outer wall of the gauge is opened at the free end of the clamping plate. A contact pad is fixed on the arc-shaped groove. The contact pad extends into the clamping groove with the protruding ring and fits against the gauge.

[0008] Preferably, the end of the robotic arm is equipped with a rotating disk that can rotate freely around the central axis, the central axis of the rotating disk is arranged vertically, and the crossbeam is fixed to the rotating disk.

[0009] Preferably, there are two control levers, which are arranged between two longitudinal beams. The control levers are fixed to the crossbeams. The two control levers are connected by a transverse connecting rod parallel to the crossbeams. The controller is mounted on the transverse connecting rod. The control panel of the controller has a digital display screen and buttons for controlling the action of the clamping power cylinder and the tilting power cylinder.

[0010] Preferably, the robotic arm includes a vertical column fixed to the ground, a rotatable rotating column mounted on the vertical column, a lifting swing assembly hinged to the rotating column, a horizontal swing assembly hinged to the front end of the lifting swing assembly and arranged horizontally, and a lifting power cylinder that drives the lifting swing assembly to swing vertically. The lifting power cylinder is mounted on the rotating column and hinged to the lifting swing assembly. A rotating disk is mounted at the front end of the horizontal swing assembly. The lifting power cylinder is connected to a controller.

[0011] Preferably, the lifting swing assembly includes a main hinge arm hinged to a rotating column and a secondary hinge arm parallel to the main hinge arm and hinged to the rotating column. The end of the main hinge arm extends out of the rotating column and is hinged to the telescopic end of the lifting power cylinder. The front ends of the main hinge arm and the secondary hinge arm are flush with each other and are respectively hinged to the horizontal swing assembly.

[0012] Preferably, the horizontal swing assembly includes a hinge seat arranged vertically and hinged to the front ends of the main hinge arm and the secondary hinge arm respectively, a horizontal swing arm hinged to the lower end of the hinge seat and arranged horizontally, and a reinforcing link connecting the horizontal swing arm and the hinge seat and arranged at an angle. The upper end of the reinforcing link is hinged to the hinge seat, and the lower end is hinged to the horizontal swing arm. The front end of the horizontal swing arm is fixed to a mounting base, and the rotating disk is mounted on the mounting base.

[0013] A method for detecting end-face tooth contact rate, using the end-face tooth contact rate detection mechanism described above, wherein the tested part has end-face teeth, characterized in that the detection steps include: S1. Place both the gauge and the workpiece to be inspected near the fixture, with the teeth on the end face of the workpiece facing upwards and the standard teeth on the end face of the gauge facing upwards and evenly coated with red lead powder. S2, hold the lever to move the fixture to the outer periphery of the gauge, and use the controller to control the fixture to hold the gauge; S3, hold the control lever to move the fixture above the workpiece to be inspected, and use the controller to control the fixture to rotate the gauge so that the standard end face teeth of the gauge face down; S4, hold the control lever to move the fixture down so that the gauge is close to the workpiece being inspected. At the same time, the control lever moves the fixture to rotate and finely adjust the angle of the standard end face teeth so that the gauge and the workpiece are aligned before meshing. Then, the fixture continues to move down so that the gauge and the workpiece are meshed. S5, use the controller to control the fixture to release the gauge, so that the gauge self-overlaps and presses onto the workpiece being inspected; S6. After the standard end face teeth of the gauge are fully overlapped and in contact with the end face teeth of the workpiece being tested, use the controller to control the fixture to re-clamp the gauge. Then, hold the lever to move the fixture upward and separate it from the workpiece being tested. Check the adhesion of red lead powder on the end face teeth of the workpiece being tested, and judge whether the contact rate of the end face teeth of the workpiece being tested is qualified based on the adhesion of red lead powder.

[0014] Preferably, a guide post that can mate with the inner hole of the gauge is inserted into the center hole of the workpiece being inspected. When the lever is held and the clamp is moved down to bring the gauge close to the workpiece being inspected, the guide post is inserted into the inner hole of the gauge to guide the downward movement of the gauge.

[0015] The beneficial effects of the invention are: The end face tooth contact rate detection mechanism of this invention uses a clamp that grips and flips a gauge under the control of a controller, avoiding manual grasping and flipping of the gauge. This reduces labor intensity and prevents the gauge from falling during movement and flipping. A joystick and controller are mounted on the clamp, with the joystick and controller connected for signal transmission. The controller controls the movement of the robotic arm. When the operator applies a slight force by gripping the joystick, a force sensor on the joystick transmits the sensed force signal to the controller. The controller then controls the robotic arm to move accordingly based on the received signal. This mechanism allows the controller to control the robotic arm's movement in response to the force applied to the joystick, thus enabling the joystick to control the movement of the robotic arm and the clamp. The joystick is mounted on the clamp. The fixture is rotatably mounted at the end of the robotic arm. By gripping the control lever, the fixture can be rotated and released. The movement of the robotic arm is guided by the control lever. The operator controls the direction, speed, and displacement of the robotic arm's movement by gripping the control lever, giving the fixture at the end of the robotic arm a flexible floating function. This effectively prevents the gauge held on the fixture from colliding or bumping with the workpiece being inspected, ensuring the safety and reliability of the inspection. Rotating the fixture with the control lever causes the gauge to rotate, forming a meshing process between the gauge and the workpiece before engagement, improving the accuracy of end face tooth inspection. This results in end face tooth contact rate inspection with a high level of automation, low labor intensity, low safety risk, and high inspection efficiency and accuracy. It is suitable for rapid inspection of end face tooth contact rate of batches of workpieces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the end face tooth contact rate detection mechanism of the present invention.

[0017] Figure 2 This is a schematic diagram of a mechanism for detecting the contact rate of the end face teeth when the gauge is not clamped.

[0018] Figure 3 A schematic diagram showing the assembly of the mounting base, rotating disk, and clamp.

[0019] Figure 4 for Figure 3 The main view.

[0020] Figure 5 This is a schematic diagram showing the state of the gauge as it moves down with the fixture and approaches the part being inspected during the inspection process. Detailed Implementation

[0021] The following is combined with Figures 1-5 The embodiments of the present invention will be described in detail below.

[0022] A face tooth contact rate detection mechanism includes a gauge 1 with standard face teeth. It is characterized by further including a clamp 2 that holds the gauge and drives the gauge 1 to rotate, a robotic arm 3 that can drive the clamp to lift and translate, a controller 4 and a joystick 5 that control the movements of the clamp 2 and the robotic arm 3. The joystick 5 is equipped with a force sensor that is connected to the controller 4 via signal transmission. The controller 4 and the joystick 5 are respectively mounted on the clamp 2. The clamp 2 is vertically arranged and rotatably mounted at the end of the robotic arm 3. The robotic arm 3 drives the clamp 2 to move under the control of the joystick, and the clamp 2 holds and rotates the gauge 1 under the control of the controller 4.

[0023] The end face tooth contact rate detection mechanism described above uses a clamp 2 that grips and flips the gauge 1 under the control of the controller 4, avoiding manual handling and flipping of the gauge 1. This reduces labor intensity and prevents the gauge 1 from falling during movement and flipping. The joystick 5 and controller 4 are mounted on the clamp 2, respectively. The joystick 5 and controller 4 are connected for signal transmission. The controller 4 controls the movement of the robotic arm 3. When the operator applies a slight force by gripping the joystick 5, the force sensor on the joystick 5 transmits the sensed force signal to the controller 4. The controller 4 then controls the robotic arm 3 to move accordingly based on the received signal. This results in the controller 4 controlling the movement of the robotic arm 3 based on the force applied to the joystick 2, thus enabling the joystick 5 to control the movement of the robotic arm 3 and the clamp 2. The clamp 2 is rotatably mounted on the end of the robotic arm 3. By holding the control lever 5, the clamp 2 can be rotated. The movement of the robotic arm 3 is tractioned by the control lever 5. The operator holds the control lever 5 to control the direction, speed and displacement of the movement of the robotic arm 3, so that the clamp 2 at the end of the robotic arm 3 has a flexible floating function, which can effectively prevent the gauge 1 held on the clamp 2 from colliding or bumping with the workpiece being inspected, ensuring the safety and reliability of the inspection. Rotating the clamp with the control lever 5 causes the gauge to rotate and form a meshing between the gauge 1 and the workpiece being inspected, improving the accuracy of end face tooth inspection. This results in end face tooth contact rate inspection with a high level of automation, low labor intensity, low safety risk and high inspection efficiency and accuracy, which is suitable for rapid inspection of end face tooth contact rate of batch workpieces.

[0024] The clamp 2 includes a horizontal beam 21 with a linear guide rail fixed at the bottom, a longitudinal beam 22 mounted on the horizontal beam 21 and guided by the linear guide rail, an end gripper 23 mounted at the bottom of the longitudinal beam 22 for gripping the gauge 1, a flipping power cylinder 24 mounted on the longitudinal beam 22 to flip the end gripper 23, and a clamping power cylinder 20 mounted on the horizontal beam 21 to move the longitudinal beam 22 on the linear guide rail. There are two longitudinal beams 22, and the end grippers 23 on the two longitudinal beams 22 are arranged opposite to each other. The clamping power cylinder 20 is mounted on the horizontal beam 21. The two end grippers 23 move closer or further apart as the clamping power cylinder 20 extends and retracts. The clamping power cylinder 20 and the flipping power cylinder 24 are respectively connected to the controller 4. An angle sensor connected to the controller is mounted on the end gripper 23. A linear guide rail is mounted at the bottom of the crossbeam 21. The longitudinal beam 22 moves along the linear guide rail as the clamping power cylinder 20 extends and retracts, ensuring that the two end grippers 23 move synchronously along the crossbeam 21, thus improving the reliability of clamping. When the clamping power cylinder 20 shortens, the two end grippers 23 move closer together to clamp the gauge 1; when it extends, the two end grippers 23 separate to release the clamping of the gauge 1. An inclination sensor detects the horizontality of the end grippers 23 and transmits the detection information to the controller. The controller controls the flipping angle of the flipping power cylinder 24 based on the detection information, ensuring that when the end grippers 23 drive the gauge 1 to flip until the standard end face teeth face down, the standard end face teeth of the gauge 1 are horizontally set and not tilted, thereby ensuring that the gauge 1 and the workpiece being inspected form a horizontal engagement and improving the inspection accuracy.

[0025] The gauge 1 is cylindrical, with a standard end face tooth at one end and a protruding ring 11 in the middle. The end gripper 23 includes a main plate 25 rotatably mounted on the lower end of the longitudinal beam 22 and connected to the tilting power cylinder 24, and clamping plates 26 fixed at both ends of the main plate 24. A clamping groove 27 that cooperates with the protruding ring 11 is formed between the two clamping plates 26. An arc-shaped groove 28 that cooperates with the outer wall of the gauge 1 is opened at the free end of the clamping plate 26. A contact pad 29 is fixed on the arc-shaped groove 28. The contact pad 29 extends into the clamping groove 27 along with the protruding ring 11 and fits against the gauge 1. The convex ring 11 is used to cooperate with the end gripper 23 to form a clamping, and to bear the weight of the gauge 1. The main board 25 is connected to the flipping power cylinder 24 and flips with the operation of the flipping power cylinder 24. A clamping groove 27 is formed between the two clamping plates 26 to cooperate with the convex ring 11. When clamping the gauge 1, the two end grippers 23 are close together, so that the convex ring 11 extends into the clamping groove 27. The contact pad 29 is exactly in contact with the outer wall of the gauge 1 and the upper and lower surfaces of the convex ring 11, forming an effective clamping of the gauge 1, avoiding vibration of the gauge 1 during clamping and movement, and the arc-shaped groove 28 cooperates with the outer wall of the gauge 1 to prevent the gauge 1 from loosening and falling during the flipping process driven by the end gripper 23, ensuring that the two end grippers 23 can effectively clamp the gauge 1 and flip it during the clamping process.

[0026] The robotic arm 3 is equipped with a rotating disk 6 at its end, which can rotate freely around its central axis. The central axis of the rotating disk 6 is vertically oriented, and the crossbeam 21 is fixed to the rotating disk 6. The rotating disk 6 allows the clamp 2 to rotate around its central axis. The operator can rotate the clamp 2 around the central axis of the rotating disk 6 by holding the control lever 5. When the standard end face teeth of the gauge 1 face downward and move down to approach the workpiece being inspected, the rotation of the clamp 2 can form a tooth alignment between the gauge 1 and the workpiece being inspected, thereby ensuring the accuracy and reliability of the inspection.

[0027] The control levers 5 are two in number and are arranged between two longitudinal beams 22. The control levers 5 are fixed to the crossbeam 21. The two control levers 5 are connected by a transverse connecting rod 51 parallel to the crossbeam 21. The controller 4 is mounted on the transverse connecting rod 51. The control panel of the controller 4 has a digital display screen and buttons for controlling the action of the clamping power cylinder 20 and the tilting power cylinder 24. As shown in the attached diagram, two control levers 5 are positioned between two longitudinal beams 22, and a controller 4 is positioned between the two control levers 5. Force sensors are mounted on the control levers 5. When the operator applies a slight force by gripping the control lever, the force sensor transmits the detected force signal to the controller 4. The controller 4 then controls the robotic arm 3 to perform the corresponding operation, thus forming motion control of the robotic arm 3 by the control levers 5. The operator only needs to grip the control levers 5 and apply a small force to achieve translation, lifting, and rotation of the clamp. When the end gripper 23 is moved to the desired position, the operator presses the button on the controller 4 to control the clamping power cylinder 20 and the tilting power cylinder 24 to clamp, release, or tilt the gauge 1. The sensitivity of the force sensor on the control lever 5 allows the controller 4 to control the movement of the robotic arm 3 in a timely manner, giving the clamp 2 at the end of the robotic arm 3 a flexible floating function, effectively preventing the gauge 1 clamped on the clamp 2 from colliding or bumping with the workpiece being inspected.

[0028] The robotic arm 3 includes a vertical column 31 fixed to the ground, a rotatable rotating column 32 mounted on the vertical column 31, a lifting swing assembly 33 hinged to the rotating column 32, a horizontal swing assembly 34 hinged to the front end of the lifting swing assembly 33 and arranged horizontally, and a lifting power cylinder 35 that drives the lifting swing assembly 33 to swing vertically. The lifting power cylinder 35 is mounted on the rotating column 32 and hinged to the lifting swing assembly 33. The rotating disk 6 is mounted at the front end of the horizontal swing assembly 34. The lifting power cylinder 35 is connected to the controller 4. When the joystick 5 is held and a horizontal thrust is applied, the horizontal thrust is transmitted to the horizontal swing assembly 34 through the clamp 2, causing the horizontal swing assembly 34 and the lifting swing assembly 33 to move horizontally. The rotating column 32 rotates on the column 31. When the joystick 5 is held and a vertical thrust is applied, the force sensor on the joystick 5 transmits the sensed force signal to the controller 4. The controller 4 controls the lifting power cylinder 35 to extend and retract according to the force signal, causing the lifting swing assembly 33 to swing up or down, and causing the horizontal swing assembly to drive the clamp 2 to rise and fall. The lifting and falling of the robotic arm 3 is achieved by the extension and retraction of the lifting power cylinder 35 to drive the lifting swing assembly 33 to swing vertically. Translation is achieved by the joystick 5 pushing the clamp 2 to move, causing the horizontal swing assembly 34 to swing horizontally and the rotating column 32 to rotate.

[0029] The lifting swing assembly 33 includes a main hinge arm 331 hinged to a rotating column 32 and a secondary hinge arm 332 parallel to the main hinge arm 331 and hinged to the rotating column 32. The end of the main hinge arm 331 extends out of the rotating column 32 and is hinged to the extension end of the lifting power cylinder 35. The front ends of the main hinge arm 331 and the secondary hinge arm 332 are flush and respectively hinged to the horizontal swing assembly 34. The main hinge arm 331 swings upward as the lifting power cylinder 35 shortens, and the secondary hinge arm 332 swings upward synchronously, driving the horizontal swing assembly 34 to swing upward, causing the clamp 2 to rise. The main hinge arm 331 swings downward as the lifting power cylinder 35 extends, and the secondary hinge arm 332 swings downward synchronously, driving the horizontal swing assembly 34 to swing downward, causing the clamp 2 to descend. The lifting power cylinder 35, the clamping power cylinder 20, and the tilting power cylinder 24 can all be pneumatic cylinders or electric cylinders.

[0030] The horizontal swing assembly 34 includes a hinge seat 341 that is vertically arranged and hinged to the front ends of the main hinge arm 331 and the secondary hinge arm 332 respectively, a horizontal swing arm 342 that is horizontally arranged and hinged to the lower end of the hinge seat 341, and a reinforcing link 343 that is inclined between the horizontal swing arm 342 and the hinge seat 341. The upper end of the reinforcing link 343 is hinged to the hinge seat 341, and the lower end is hinged to the horizontal swing arm 342. The front end of the horizontal swing arm 342 is fixed to a mounting base 344, and the rotating disk 6 is mounted on the mounting base 344. The hinge seat 341 is vertically arranged and hinged to the front end of the main hinge arm 331 and the front end of the secondary hinge arm 332 respectively, so that the main hinge arm 331, the secondary hinge arm 332, the hinge seat 341 and the rotating column 32 form a parallelogram. The extension and retraction of the lifting power cylinder 35 drives the main hinge arm 331 to swing vertically, causing the parallelogram to deform and the hinge seat 341 to rise and fall, thereby driving the rotating disk 6 and the clamp 2 to rise and fall. The lifting and falling of the clamp 2 is achieved by the deformation of the parallelogram, which improves the stability of the structure. The main hinge arm 331 and the secondary hinge arm 332 simultaneously bear the load of the clamp and the gauge, which has strong load-bearing reliability and is not easily deformed, thus improving the structural reliability of the robotic arm 3.

[0031] The end face tooth contact rate detection method, using the end face tooth contact rate detection mechanism described above, wherein the tested component 100 has end face teeth, is characterized by the following detection steps: S1. Place both gauge 1 and the workpiece 100 to be inspected near fixture 2, with the end face teeth of workpiece 100 facing upwards and the standard end face teeth of gauge 1 facing upwards and evenly coated with red lead powder. S2, hold the lever 5 to move the clamp 2 to the outer periphery of the gauge 1, and use the controller 4 to control the clamp 2 to hold the gauge 1; S3, hold the lever 5 to move the clamp 2 above the workpiece 100 to be inspected, and use the controller 4 to control the clamp 2 to rotate the gauge 1 so that the standard end face teeth of the gauge 1 face down. S4, hold the lever 5 to move the clamp 2 down so that the gauge 1 is close to the workpiece 100 being inspected. At the same time, the lever 5 moves the clamp 2 to rotate and finely adjust the angle of the standard end face teeth so that the gauge 1 and the workpiece 100 are aligned before meshing. Then, the clamp 2 continues to move down so that the gauge 1 and the workpiece 100 being inspected are meshed. S5, the controller 4 controls the clamp 2 to release the clamp on the gauge 1, so that the gauge 1 self-overlaps and presses on the workpiece 100 to be inspected. S6. After the standard end face teeth of gauge 1 are fully overlapped and in contact with the end face teeth of the test piece 100, the controller 4 controls the clamp 2 to re-clamp gauge 1. Then, the operator holds the lever 4 to move the clamp 2 upward and separate it from the test piece 100. The adhesion of red lead powder on the end face teeth of the test piece 100 is checked, and the contact rate of the end face teeth of the test piece is judged according to the adhesion of red lead powder.

[0032] The detection method described above involves the operator applying a slight force by holding the control lever 5. The force sensor on the control lever 5 transmits the detected force signal to the controller. The controller 5 then controls the robotic arm 3 to move accordingly based on the received signal. This means the controller 4 controls the robotic arm 3 to move in response to the force applied to the control lever 2, thus enabling the movement of the gripper 2 by controlling the robotic arm 3 with the control lever 5. The control lever 5 is mounted on the gripper 2, which is rotatably mounted at the end of the robotic arm 3. By holding the control lever 5, the gripper 2 can be rotated. Applying a slight force to the control lever 5 can cause the gripper to translate, lift, and rotate, thus controlling the movement of the robotic arm 3. Pulled by the joystick 5, the operator holds the joystick 5 to control the movement direction, speed and displacement of the robotic arm 3, so that the clamp 2 at the end of the robotic arm 3 has a flexible floating function, which can effectively prevent the gauge 1 held on the clamp 2 from colliding or bumping with the workpiece being inspected, ensuring the safety and reliability of the inspection. The clamp is rotated by the joystick 5, so that the gauge rotates to form a meshing between the gauge 1 and the workpiece 100 before meshing, improving the accuracy of end face tooth inspection. This forms an end face tooth contact rate inspection with a high level of automation, low labor intensity, low safety risk and high inspection efficiency and accuracy, which is suitable for rapid inspection of the end face tooth contact rate of batches of workpieces.

[0033] In this process, a guide post 7, which mates with the inner hole of gauge 1, is inserted into the center hole of the workpiece 100. When the lever 5 is held and the clamp 2 is moved downward to bring gauge 1 closer to workpiece 100, the guide post 7 extends into the inner hole of gauge 1 to guide the downward movement of gauge 1. The guide post 7 guides gauge 1 to be vertically aligned with workpiece 100, thereby further improving the operability, convenience and accuracy of the inspection.

[0034] The technical solutions of the embodiments of the present invention have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A face tooth contact rate testing mechanism, comprising a gauge with standard face teeth, characterized in that: It also includes a fixture that holds and rotates the gauge, a robotic arm that can lift and move the fixture, a controller and a joystick that control the movement of the fixture and the robotic arm. The joystick is equipped with a force sensor that is connected to the controller for signal transmission. The controller and the joystick are respectively mounted on the fixture. The fixture is vertically mounted and rotatably mounted on the end of the robotic arm. The robotic arm moves the fixture under the control of the joystick, and the fixture holds and rotates the gauge under the control of the controller.

2. The end face tooth contact rate detection mechanism according to claim 1, characterized in that: The fixture includes a horizontally arranged crossbeam with a linear guide rail fixed at its bottom, a longitudinal beam mounted on the crossbeam and guided by the linear guide rail, an end gripper mounted at the bottom of the longitudinal beam for holding a gauge, a flipping power cylinder mounted on the longitudinal beam to drive the end gripper to flip, and a clamping power cylinder mounted on the crossbeam to drive the longitudinal beam to move on the linear guide rail. There are two longitudinal beams, and the end grippers on the two longitudinal beams are arranged opposite each other. The clamping power cylinder is mounted on the crossbeam. The two end grippers move closer or further apart as the clamping power cylinder extends and retracts. The clamping power cylinder and the flipping power cylinder are respectively connected to a controller. An angle sensor connected to the controller is mounted on the end gripper.

3. The end face tooth contact rate detection mechanism according to claim 2, characterized in that: The gauge is cylindrical, with a standard end face tooth at one end and an outwardly protruding ring in the middle. The end gripper includes a rotatable main plate mounted on the lower end of the longitudinal beam and connected to the tilting power cylinder, and clamping plates fixed at both ends of the main plate. A clamping groove that mates with the protruding ring is formed between the two clamping plates. An arc-shaped groove that mates with the outer wall of the gauge is opened at the free end of the clamping plate. A contact pad is fixed on the arc-shaped groove. The contact pad extends into the clamping groove with the protruding ring and fits against the gauge.

4. The end face tooth contact rate detection mechanism according to claim 2, characterized in that: The end of the robotic arm is equipped with a rotating disk that can rotate freely around its central axis. The central axis of the rotating disk is set vertically, and the crossbeam is fixed to the rotating disk.

5. The end face tooth contact rate detection mechanism according to claim 2, characterized in that: The control levers are two in number and are set between two longitudinal beams. The control levers are fixed to the crossbeams. The two control levers are connected by a transverse connecting rod parallel to the crossbeams. The controller is mounted on the transverse connecting rod. The control panel of the controller has a digital display screen and buttons for controlling the action of the clamping power cylinder and the tilting power cylinder.

6. The end face tooth contact rate detection mechanism according to claim 4, characterized in that: The robotic arm includes a vertical column fixed to the ground, a rotatable rotating column mounted on the vertical column, a lifting and swinging assembly hinged to the rotating column, a horizontal swinging assembly hinged to the front end of the lifting and swinging assembly and positioned horizontally, and a lifting power cylinder that drives the lifting and swinging assembly to swing vertically. The lifting power cylinder is mounted on the rotating column and hinged to the lifting and swinging assembly. A rotating disk is mounted at the front end of the horizontal swinging assembly. The lifting power cylinder is connected to a controller.

7. The end face tooth contact rate detection mechanism according to claim 6, characterized in that: The lifting swing assembly includes a main hinge arm hinged to a rotating column and a secondary hinge arm parallel to the main hinge arm and hinged to the rotating column. The end of the main hinge arm extends out of the rotating column and is hinged to the telescopic end of the lifting power cylinder. The front ends of the main hinge arm and the secondary hinge arm are flush with each other and are respectively hinged to the horizontal swing assembly.

8. The end face tooth contact rate detection mechanism according to claim 7, characterized in that: The horizontal swing assembly includes a hinge seat arranged vertically and hinged to the front ends of the main hinge arm and the secondary hinge arm respectively, a horizontal swing arm hinged to the lower end of the hinge seat and arranged horizontally, and a reinforcing link connecting the horizontal swing arm and the hinge seat and arranged at an angle. The upper end of the reinforcing link is hinged to the hinge seat, and the lower end is hinged to the horizontal swing arm. The front end of the horizontal swing arm is fixed to a mounting base, and a rotating disk is mounted on the mounting base.

9. A method for detecting the contact rate of end face teeth, wherein the end face tooth contact rate detection mechanism according to any one of claims 1 to 8 is used for detection, and the part being tested has end face teeth, characterized in that: The testing steps include: S1. Place both the gauge and the workpiece to be inspected near the fixture, with the teeth on the end face of the workpiece facing upwards and the standard teeth on the end face of the gauge facing upwards and evenly coated with red lead powder. S2, hold the lever to move the fixture to the outer periphery of the gauge, and use the controller to control the fixture to hold the gauge; S3, hold the control lever to move the fixture above the workpiece to be inspected, and use the controller to control the fixture to rotate the gauge so that the standard end face teeth of the gauge face down; S4, hold the control lever to move the fixture down so that the gauge is close to the workpiece being inspected. At the same time, the control lever moves the fixture to rotate and finely adjust the angle of the standard end face teeth so that the gauge and the workpiece are aligned before meshing. Then, the fixture continues to move down so that the gauge and the workpiece are meshed. S5, use the controller to control the fixture to release the gauge, so that the gauge self-overlaps and presses onto the workpiece being inspected; S6. After the standard end face teeth of the gauge are fully overlapped and in contact with the end face teeth of the workpiece being tested, use the controller to control the fixture to re-clamp the gauge. Then, hold the lever to move the fixture upward and separate it from the workpiece being tested. Check the adhesion of red lead powder on the end face teeth of the workpiece being tested, and judge whether the contact rate of the end face teeth of the workpiece being tested is qualified based on the adhesion of red lead powder.

10. The method for detecting the contact rate of end face teeth according to claim 9, characterized in that: Insert a guide post into the center hole of the workpiece to be inspected, which can mate with the inner hole of the gauge. Hold the control lever and move the fixture down to bring the gauge close to the workpiece to be inspected. Then, insert the guide post into the inner hole of the gauge to guide the downward movement of the gauge.

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