Detection equipment for long shaft end tooth production

Abstract

The invention discloses detection equipment for long-axis end tooth production, which comprises a substrate, a standard component fixing module is mounted on the rear side of the upper end of the substrate, a to-be-detected end tooth fixing module is mounted on the front side of the upper end of the substrate, and a transmission mechanism is mounted between the standard component fixing module and the to-be-detected end tooth fixing module; a fixing frame is fixed to the middle of the upper end of the base plate, a distance adjusting mechanism is installed on the fixing frame, two sets of detection assemblies are installed on the fixing frame, each set of detection assembly comprises a base installed on the fixing frame in a sliding mode in the vertical direction, and a reference sensing unit is installed in each base in a sliding mode. A floating detection unit is installed on the reference sensing unit in a sliding mode, and a photoelectric displacement sensor is installed between the reference sensing unit and the floating detection unit. According to the detection equipment for long-shaft end tooth production, high-precision dynamic detection is achieved through standard component comparison and photoelectric sensing, real meshing is simulated through synchronous rotation, the detection precision is high, repeatability is good, and the detection equipment is non-destructive and is close to the actual working condition.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of end tooth detection, and particularly relates to a detection equipment for long-shaft end tooth production. BACKGROUND

[0002] In the field of mechanical manufacturing, especially in high-precision transmission systems, long-shaft end teeth, as key connecting and force transmission components, directly affect the running stability, noise level and service life of the whole machine in terms of tooth profile precision, tooth pitch consistency and symmetry.

[0003] After traditional end tooth machining is completed, manual visual inspection, plug gauge comparison or three-coordinate measuring machines are usually used for sampling inspection. However, manual detection is highly subjective and low in efficiency; plug gauges can only determine whether the end tooth is qualified or not, and cannot quantify errors; and three-coordinate measurement has high precision, but belongs to static off-line detection, and is difficult to simulate the dynamic matching state of the end tooth under actual meshing conditions, and has a long detection cycle and high cost, and is difficult to meet the online quality control requirements in mass production.

[0004] In recent years, some enterprises have tried to introduce optical vision or laser scanning technology for non-contact detection, but such methods are easily disturbed by factors such as workpiece surface reflection, oil stains and environmental light, have limited tooth surface feature recognition capability for deep grooves and shadow areas, and cannot directly reflect the actual matching deviation of the end tooth in the force meshing process.

[0005] Therefore, the detection equipment for long-shaft end tooth production is proposed to solve the problems in the prior art. SUMMARY

[0006] 1. Technical problems to be solved by the application: The purpose of the application is to provide a detection equipment for long-shaft end tooth production to solve the problems in the prior art.

[0007] 2. Technical scheme: To achieve the above purpose, the application provides the following technical scheme: a detection equipment for long-shaft end tooth production, comprising a base plate, a standard part fixing module is installed at the upper rear side of the base plate, a to-be-detected end tooth fixing module is installed at the upper front side of the base plate, and a transmission mechanism is installed between the standard part fixing module and the to-be-detected end tooth fixing module. A fixing frame is fixed at the upper middle part of the base plate, a spacing adjustment mechanism is installed on the fixing frame, two groups of detection assemblies are installed on the fixing frame, each group of detection assemblies comprises a base vertically slidingly installed on the fixing frame, a reference sensing unit is slidingly installed in the base, a floating detection unit is slidingly installed on the reference sensing unit, and an optical displacement sensor is installed between the reference sensing unit and the floating detection unit.

[0008] Further, the standard part fixing module comprises a lateral displacement module one, a mounting frame one and a three-jaw chuck one; The lateral displacement module one is installed at the upper end rear side of the base plate, and the mounting frame one is installed on the output end of the lateral displacement module one; The three-jaw chuck one is rotatably installed at the middle part front side of the mounting frame one, and is used for clamping a standard part; The front end of the three-jaw chuck one is fixedly installed with a positioning block.

[0009] Through the above technical solution, the standard part is clamped under the auxiliary action of the positioning block.

[0010] Further, the to-be-measured end tooth fixing module comprises a lateral displacement module two, a mounting frame two and a three-jaw chuck two; The lateral displacement module two is installed at the upper end front side of the base plate, and the mounting frame two is installed on the output end of the lateral displacement module two; The three-jaw chuck two is rotatably installed at the middle part rear side of the mounting frame two, and is used for clamping a to-be-measured end tooth; The rear side of the three-jaw chuck two is also fixedly installed with a positioning block.

[0011] Through the above technical solution, the to-be-measured end tooth is clamped under the auxiliary action of the positioning block.

[0012] Further, the transmission mechanism comprises two force receiving gears, two driving gears and a connecting piece; The ends of the two force receiving gears are respectively fixedly connected with the rotating shafts of the three-jaw chucks one and two; The two driving gears are respectively installed at the two ends of the connecting piece, and the two driving gears are respectively meshed with the two force receiving gears.

[0013] Through the above technical solution, when one driving gear is driven to rotate by the motor, the meshing action of the driving gear and the force receiving gear is utilized, and then the torque is transmitted through the connecting piece to drive the three-jaw chucks one and two to synchronously rotate.

[0014] Further, the connecting piece comprises an outer cylinder, a sliding rod and a guide key strip.

[0015] The guide key strip is symmetrically installed on the two sides of the sliding rod; The sliding rod and the guide key strip are both slidingly fitted in the inner part of the outer cylinder, the rear end of the outer cylinder is fixedly connected with the end part of the driving gear located at the rear side, and the front end of the sliding rod is fixedly connected with the end part of the driving gear located at the front side.

[0016] Through the technical scheme, the distance between the two driving gears can be adjusted while ensuring synchronous rotation of the two driving gears.

[0017] Further, a support member is arranged below the middle part of the outer cylinder. The support member comprises a support seat fixed on the base plate, and support balls are uniformly distributed on the support seat.

[0018] Through the above technical scheme, the middle part of the connecting piece can be supported under the cooperation of the support seat and the support balls.

[0019] Further, the distance adjusting mechanism comprises a driving motor, a driving gear, a driven gear, a bidirectional threaded rod and two sliding blocks. The driving motor is installed on the fixing frame, and the output end of the driving motor is in key connection with the driving gear. The bidirectional threaded rod is rotatably installed on the fixing frame through a bearing, and the end part of the bidirectional threaded rod is fixedly connected with the driven gear, and the driven gear is in meshing connection with the driving gear. The two sliding blocks are symmetrically screwed on the two ends of the bidirectional threaded rod, and the upper and lower ends of each sliding block are hingedly connected with a connecting rod, and the other end of the connecting rod is rotatably installed on the side part of the corresponding base.

[0020] Through the above technical scheme, when the bidirectional threaded rod is driven to rotate, the two sliding blocks can be driven to move relatively, and then the base can be driven to move vertically through the connecting rod.

[0021] Further, the reference sensing unit comprises a fixed cylinder, a sleeve plate, a compression spring and a reference contact rod. The sleeve plate is fixedly sleeved on the outside of the fixed cylinder, and is slidingly installed in the inside of the base in cooperation. The compression spring is sleeved on the outside of the fixed cylinder, and the two ends of the compression spring are connected with the sleeve plate and the base respectively. The reference contact rod is fixed on the rear end of the fixed cylinder, and the end part of the reference contact rod movably installs a sliding ball.

[0022] Through the above technical scheme, the reference contact rod abuts on the standard part through the sliding ball.

[0023] Further, the floating detection unit comprises a floating inner cylinder and a detection contact rod. The floating inner cylinder is slidingly arranged in the inside of the fixed cylinder. The detection contact rod is fixedly installed on the front end of the floating inner cylinder, and the end part of the detection contact rod also movably installs a sliding ball.

[0024] The above technical solution enables the detection contact rod to abut against the tooth to be tested via a sliding ball.

[0025] Furthermore, a pressure spring is installed inside the fixed cylinder, and the two ends of the pressure spring are respectively connected to the fixed cylinder and the floating inner cylinder. The photoelectric displacement sensor includes a light emitter and a light receiver, which are arranged correspondingly. The light emitter is installed on the inner wall of the fixed cylinder, and the light receiver is fixed to the end of the floating inner cylinder.

[0026] The above technical solution enables detection by means of a slight displacement of the detection contact rod caused by the cooperation of the light emitter and the light receiver, thereby causing a change in the photoelectric signal.

[0027] 3. Beneficial effects: Compared with the prior art, the testing equipment for producing long shaft end teeth of the present invention achieves high-precision dynamic detection through standard part comparison and photoelectric sensing, and synchronous rotation simulates real meshing. It features high detection accuracy, good repeatability, non-destructive operation, and close resemblance to actual working conditions. The specific details are as follows: (1) The standard end gear is clamped in the three-jaw chuck one and the end gear to be tested is clamped in the three-jaw chuck two. The alignment and positioning blocks at both ends ensure that the standard part and the part to be tested are initially aligned in the axial and circumferential directions, thereby improving the consistency of the test reference. (2) The standard part and the end tooth to be tested are driven to move towards the detection component by the lateral displacement module one and lateral displacement module two until the reference contact rod of the reference sensing unit abuts against the end tooth surface of the standard part and the detection contact rod of the floating detection unit abuts against the end tooth surface of the end tooth. When there is an error in the end tooth, the detection contact rod produces a small displacement, which drives the floating inner cylinder to slide in the fixed cylinder, compressing or stretching the pressure spring. This displacement changes the relative position between the light emitter and the light receiver, thereby causing a change in the photoelectric signal. After the signal is collected and processed, it can quantitatively reflect the deviation of the end tooth to be tested relative to the standard part. The standard part is used as the physical reference, and the photoelectric displacement sensor is combined to perform displacement sensing, avoiding the limitations of pure vision or pure mechanical measurement. The detection accuracy is high and the repeatability is good. (3) The two force-bearing gears in the transmission mechanism are fixedly connected to the rotating shafts of the three-jaw chuck one and the three-jaw chuck two, respectively. When the motor drives one end of the active gear to rotate, the torque is transmitted through the connecting parts via the meshing of the active gear and the force-bearing gear, thereby realizing the forced synchronous rotation of the standard part and the part to be tested, simulating the actual meshing state, and realizing the dynamic, real-time, and non-destructive detection of the geometric error of the end teeth. The detection results are closer to the actual working conditions. (4) The middle part of the connector is supported by a support seat with supporting balls to reduce gravity deformation and vibration, and ensure smooth transmission. The end of the contact rod adopts a sliding ball design, rolling contact instead of sliding friction, to prevent damage to the precision tooth surface during the testing process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the transmission mechanism structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the support component of the present invention; Figure 4 This is a schematic diagram of the fixing frame structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fixing frame of the present invention; Figure 6 This is a schematic diagram of the base structure of the present invention; Figure 7 This is a top-section schematic diagram of the base structure of the present invention.

[0029] In the diagram: 1. Base plate; 2. Lateral displacement module one; 3. Mounting bracket one; 4. Three-jaw chuck one; 5. Lateral displacement module two; 6. Mounting bracket two; 7. Three-jaw chuck two; 8. Transmission mechanism; 81. Force-bearing gear; 82. Drive gear; 83. Connecting component; 831. Outer cylinder; 832. Sliding rod; 833. Guide key; 84. Support component; 841. Support base; 842. Support ball; 9. Alignment block; 10. Fixing bracket; 11. Spacing adjustment mechanism; 111 112. Drive motor; 113. Drive gear; 114. Driven gear; 115. Bidirectional threaded rod; 116. Slider; 117. Connecting rod; 12. Base; 13. Reference sensing unit; 131. Fixed cylinder; 132. Sleeve plate; 133. Compression spring; 134. Reference contact rod; 14. Floating detection unit; 141. Floating inner cylinder; 142. Detection contact rod; 15. Pressure spring; 16. Photoelectric displacement sensor; 161. Light emitter; 162. Light receiver. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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. Example

[0031] Please see Figures 1-7This invention provides a technical solution: a testing device for producing long shaft end teeth, comprising a base plate 1, a standard part fixing module mounted on the upper rear side of the base plate 1, and a tooth-to-be-tested fixing module mounted on the upper front side of the base plate 1, with a transmission mechanism 8 installed between the standard part fixing module and the tooth-to-be-tested fixing module; the standard part fixing module includes a lateral displacement module 2, a mounting bracket 3, and a three-jaw chuck 4; the lateral displacement module 2 is mounted on the upper rear side of the base plate 1, and the mounting bracket 3 is mounted on the output of the lateral displacement module 2. On the end; a three-jaw chuck 4 is rotatably mounted on the front side of the middle of the mounting bracket 3 via a bearing, and the three-jaw chuck 4 is used to clamp standard parts; a positioning block 9 is fixedly mounted on the front end of the three-jaw chuck 4; the end tooth fixing module to be tested includes a lateral displacement module 2 5, a mounting bracket 2 6, and a three-jaw chuck 2 7; the lateral displacement module 2 5 is mounted on the front side of the upper end of the base plate 1, and the mounting bracket 2 6 is mounted on the output end of the lateral displacement module 2 5; the three-jaw chuck 2 7 is rotatably mounted on the rear side of the middle of the mounting bracket 2 6 via a bearing, and the three-jaw chuck 2 7 is used to clamp standard parts; The three-jaw chuck 7 is used to clamp the end teeth to be tested; a positioning block 9 is also fixedly installed on the rear side of the three-jaw chuck 2; the transmission mechanism 8 includes two force-bearing gears 81, two drive gears 82, and a connecting member 83; the ends of the two force-bearing gears 81 are respectively fixedly connected to the rotating shaft of the three-jaw chuck 4 and the rotating shaft of the three-jaw chuck 2; the two drive gears 82 are respectively installed at both ends of the connecting member 83, and the two drive gears 82 are respectively meshed with the two force-bearing gears 81; the connecting member 83 includes an outer cylinder 831, a sliding rod 832, and a guide key 83. 3; Guide key strips 833 are symmetrically installed on both sides of sliding rod 832; both sliding rod 832 and guide key strips 833 are slidably fitted inside outer cylinder 831, and the rear end of outer cylinder 831 is fixedly connected to the end of drive gear 82 located on the rear side, and the front end of sliding rod 832 is fixedly connected to the end of drive gear 82 located on the front side; a support member 84 is provided below the middle part of outer cylinder 831; the support member 84 includes a support seat 841 fixed on base plate 1, and support balls 842 are evenly distributed on the support seat 841; The standard end gear and the end gear to be tested are clamped in the three-jaw chuck 4 and the three-jaw chuck 7 respectively. The alignment and positioning blocks 9 on the three-jaw chuck 4 and the three-jaw chuck 7 ensure that the standard part and the part to be tested are initially aligned in the axial and circumferential directions, thereby improving the consistency of the test reference. Then, the lateral displacement module 12 and lateral displacement module 25 respectively drive the corresponding clamped standard parts and the end teeth to be tested to move towards the detection component, until the reference contact rod 134 of the reference sensing unit 13 abuts against the surface of the end teeth of the standard parts, and the detection contact rod 142 of the floating detection unit 14 abuts against the surface of the end teeth of the end parts to be tested. Meanwhile, the two force-bearing gears 81 in the transmission mechanism 8 are fixedly connected to the rotating shafts of the three-jaw chuck 1 4 and the three-jaw chuck 2 7, respectively. When the motor drives the drive gear 82 at one end to rotate, the torque is transmitted through the connecting piece 83 via the meshing of the drive gear 82 and the force-bearing gear 81, thereby achieving forced synchronous rotation of the standard part and the part to be tested, simulating the actual meshing state, and realizing dynamic, real-time, and non-destructive detection of the geometric error of the end teeth. The detection results are closer to the actual working conditions. A mounting frame 10 is fixed at the upper center of the substrate 1. A spacing adjustment mechanism 11 is mounted on the mounting frame 10, and two sets of detection components are mounted on the mounting frame 10. Each set of detection components includes a base 12 that is slidably mounted vertically on the mounting frame 10. A reference sensing unit 13 is slidably mounted inside the base 12, and a floating detection unit 14 is slidably mounted on the reference sensing unit 13. A photoelectric displacement sensor 16 is installed between the reference sensing unit 13 and the floating detection unit 14. The spacing adjustment mechanism 11 includes a drive motor 111, a drive gear 112, a driven gear 113, and a bidirectional threaded rod 114. The system includes two sliders 115; a drive motor 111 is mounted on a fixed frame 10, and the output end of the drive motor 111 is keyed to a drive gear 112; a bidirectional threaded rod 114 is rotatably mounted on the fixed frame 10 via bearings, and the end of the bidirectional threaded rod 114 is fixedly connected to a driven gear 113, which meshes with the drive gear 112; two sliders 115 are symmetrically threaded to the two ends of the bidirectional threaded rod 114, and each slider 115 has a connecting rod 116 hinged to its upper and lower ends, with the other end of the connecting rod 116 rotatably mounted on the side of the corresponding base 12; the reference sensing unit 13 includes... The system comprises a fixed cylinder 131, a sleeve 132, a compression spring 133, and a reference contact rod 134. The sleeve 132 is fixedly sleeved on the outside of the fixed cylinder 131 and slidably mounted inside the base 12. The compression spring 133 is sleeved on the outside of the fixed cylinder 131, and its two ends are connected to the sleeve 132 and the base 12, respectively. The reference contact rod 134 is fixed to the rear end of the fixed cylinder 131, and a sliding ball is movably mounted at the end of the reference contact rod 134. The floating detection unit 14 includes a floating inner cylinder 141 and a detection contact rod 142. The floating inner cylinder 141 slides in contact with the detection rod. The sensor 16 is located inside the fixed cylinder 131; the detection contact rod 142 is fixedly installed at the front end of the floating inner cylinder 141, and a sliding ball is also movably installed at the end of the detection contact rod 142; a pressure spring 15 is installed inside the fixed cylinder 131, and the two ends of the pressure spring 15 are respectively connected to the fixed cylinder 131 and the floating inner cylinder 141; the photoelectric displacement sensor 16 includes a light emitter 161 and a light receiver 162, which are correspondingly arranged, and the light emitter 161 is installed on the inner wall of the fixed cylinder 131, and the light receiver 162 is fixed at the end of the floating inner cylinder 141; The transmission mechanism 8 drives the standard end tooth and the end tooth under test to rotate synchronously. When there is an error in the end tooth under test, the detection contact rod 142 generates a small displacement, which drives the floating inner cylinder 141 to slide in the fixed cylinder 131, compressing or stretching the pressure spring 15. This displacement changes the relative position between the light emitter 161 and the light receiver 162, thereby causing a change in the photoelectric signal. After the signal is collected and processed, it can quantitatively reflect the deviation of the end tooth under test relative to the standard part. The standard part is used as a physical reference, and the photoelectric displacement sensor 16 is used for displacement sensing, avoiding the limitations of pure vision or pure mechanical measurement. The detection accuracy is high and the repeatability is good.

[0032] Working principle: When using this long shaft end gear production testing equipment, such as... Figures 1-7 As shown, firstly, with the assistance of the alignment block 9, the standard end tooth and the end tooth to be tested are respectively clamped in the three-jaw chuck 4 and the three-jaw chuck 7. Then, the lateral displacement module 2 and the lateral displacement module 5 drive the corresponding clamped standard part and the end tooth to be tested to move towards the detection component, until the reference contact rod 134 of the reference sensing unit 13 abuts against the surface of the standard end tooth and the detection contact rod 142 of the floating detection unit 14 abuts against the surface of the end tooth to be tested. Then, the transmission mechanism 8 drives the standard end tooth and the end tooth to be tested to rotate synchronously. When there is an error in the end tooth to be tested, the detection contact rod 142 generates a small displacement. This displacement changes the relative position between the light emitter 161 and the light receiver 162, thereby causing a change in the photoelectric signal. After the signal is collected and processed, it can quantitatively reflect the deviation of the end tooth to be tested relative to the standard part. Using the standard part as a physical reference and combining it with the photoelectric displacement sensor 16 for displacement sensing avoids the limitations of pure vision or pure mechanical measurement, resulting in high detection accuracy and good repeatability.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for producing long shaft end teeth, characterized in that: The substrate (1) includes a standard part fixing module installed on the upper rear side of the substrate (1) and a test end tooth fixing module installed on the upper front side of the substrate (1). A transmission mechanism (8) is installed between the standard part fixing module and the test end tooth fixing module. A mounting bracket (10) is fixed at the upper middle part of the substrate (1). A spacing adjustment mechanism (11) is installed on the mounting bracket (10). Two sets of detection components are installed on the mounting bracket (10). Each set of detection components includes a base (12) that is slidably mounted on the mounting bracket (10) in the vertical direction. A reference sensing unit (13) is slidably mounted inside the base (12). A floating detection unit (14) is slidably mounted on the reference sensing unit (13). A photoelectric displacement sensor (16) is installed between the reference sensing unit (13) and the floating detection unit (14).

2. The testing equipment for producing long shaft end teeth according to claim 1, characterized in that: The standard component fixing module includes a lateral displacement module (2), a mounting bracket (3), and a three-jaw chuck (4). The lateral displacement module 1 (2) is installed on the upper rear side of the substrate (1), and the mounting bracket 1 (3) is installed on the output end of the lateral displacement module 1 (2); The three-jaw chuck (4) is rotatably mounted on the front side of the middle part of the mounting bracket (3) via a bearing. The three-jaw chuck (4) is used to clamp standard parts. The front end of the three-jaw chuck (4) is fixedly installed with a positioning block (9).

3. The testing equipment for producing long shaft end teeth according to claim 2, characterized in that: The test end tooth fixing module includes a second transverse displacement module (5), a second mounting bracket (6), and a second three-jaw chuck (7). The second lateral displacement module (5) is installed on the upper front side of the substrate (1), and the second mounting bracket (6) is installed on the output end of the second lateral displacement module (5). The three-jaw chuck 2 (7) is rotatably mounted on the rear side of the middle part of the mounting frame 2 (6) via a bearing. The three-jaw chuck 2 (7) is used to clamp the end tooth to be tested. The rear side of the three-jaw chuck (7) is also fixedly installed with a positioning block (9).

4. The testing equipment for producing long shaft end teeth according to claim 3, characterized in that: The transmission mechanism (8) includes two force-bearing gears (81), two drive gears (82), and a connecting member (83). The ends of the two force-bearing gears (81) are respectively fixedly connected to the rotating shaft of the three-jaw chuck one (4) and the rotating shaft of the three-jaw chuck two (7); Two drive gears (82) are respectively installed at both ends of the connector (83), and the two drive gears (82) are respectively meshed with two force-bearing gears (81).

5. The testing equipment for producing long shaft end teeth according to claim 4, characterized in that: The connector (83) includes an outer cylinder (831), a sliding rod (832), and a guide key (833). The guide key (833) is symmetrically installed on both sides of the sliding rod (832); The sliding rod (832) and the guide key (833) are both slidably fitted inside the outer cylinder (831), and the rear end of the outer cylinder (831) is fixedly connected to the end of the drive gear (82) located on the rear side, and the front end of the sliding rod (832) is fixedly connected to the end of the drive gear (82) located on the front side.

6. The testing equipment for producing long shaft end teeth according to claim 5, characterized in that: A support member (84) is provided at the lower middle part of the outer cylinder (831). The support member (84) includes a support seat (841) fixed on the substrate (1), and support balls (842) are evenly distributed on the support seat (841).

7. The testing equipment for producing long shaft end teeth according to claim 1, characterized in that: The spacing adjustment mechanism (11) includes a drive motor (111), a drive gear (112), a driven gear (113), a bidirectional threaded rod (114), and two sliders (115). The drive motor (111) is mounted on the fixed frame (10), and the output end of the drive motor (111) is key-connected to the drive gear (112); The bidirectional threaded rod (114) is rotatably mounted on the fixed frame (10) via a bearing, and the end of the bidirectional threaded rod (114) is fixedly connected to the driven gear (113), and the driven gear (113) meshes with the drive gear (112); Two sliders (115) are symmetrically threaded to both ends of the bidirectional threaded rod (114), and each slider (115) is hinged to a connecting rod (116) at both ends. The other end of the connecting rod (116) is rotatably mounted on the side of the corresponding base (12).

8. The testing equipment for producing long shaft end teeth according to claim 1, characterized in that: The reference sensing unit (13) includes a fixed cylinder (131), a sleeve (132), a compression spring (133), and a reference contact rod (134). The sleeve (132) is fixedly sleeved on the outside of the fixed cylinder (131), and the sleeve (132) is slidably installed inside the base (12); The compression spring (133) is sleeved on the outside of the fixed cylinder (131), and the two ends of the compression spring (133) are connected to the sleeve plate (132) and the base (12) respectively. The reference contact rod (134) is fixed to the rear end of the fixed cylinder (131), and a sliding ball is movably installed at the end of the reference contact rod (134).

9. The testing equipment for producing long shaft end teeth according to claim 8, characterized in that: The floating detection unit (14) includes a floating inner cylinder (141) and a detection contact rod (142). The floating inner cylinder (141) is slidably disposed inside the fixed cylinder (131); The detection contact rod (142) is fixedly installed at the front end of the floating inner cylinder (141), and a sliding ball is also movably installed at the end of the detection contact rod (142).

10. The testing equipment for producing long shaft end teeth according to claim 9, characterized in that: A pressure spring (15) is installed inside the fixed cylinder (131), and the two ends of the pressure spring (15) are connected to the fixed cylinder (131) and the floating inner cylinder (141) respectively. The photoelectric displacement sensor (16) includes a light emitter (161) and a light receiver (162), which are respectively arranged, and the light emitter (161) is installed on the inner wall of the fixed cylinder (131), and the light receiver (162) is fixed at the end of the floating inner cylinder (141).

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