Detection device for tooth profile axial runout of spline shaft of automobile steering device
By designing the detection devices of the left sliding seat group, right sliding seat group and measuring mechanism group, the problems of inaccurate detection of axial jump of spline shafts and inconvenient loading and unloading are solved, and the rapid and accurate detection of spline shafts is achieved, and the detection accuracy is achieved. 0.005mm, suitable for products of different specifications, avoiding the problems of shaft damage and inaccurate torque transmission.
Patent Information
- Application Number
- CN202411796425.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-01-14
AI Technical Summary
The existing spline shaft axial jump detection technology has problems such as inaccurate detection and inconvenient loading and unloading, resulting in easy shaft damage and inaccurate torque transmission, resulting in economic losses.
A detection device including a left sliding seat group, a right sliding seat group and a measuring mechanism group is designed to achieve rapid detection of spline shafts through precision guide rails and locking mechanisms, and use Sanfeng micrometer and universal joint bracket for precision The measurement and detection accuracy reaches 0.005mm.
It realizes fast and accurate detection of axial jump of spline shafts, and is easy to clamp and disassemble. It is suitable for products of different lengths and diameters. It has strong applicability and reliable detection results, avoiding the problems of shaft damage and inaccurate torque transmission.
Smart Images
Figure CN119309475A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of axial runout detection of a spline toothed shaft, and in particular relates to a detection device for detecting axial runout of a spline. Background Art
[0002] The spline shaft is a commonly used mechanical transmission method, and its main function is to transmit power to the rotating equipment to realize various functions. The spline shaft consists of three parts: the shaft, the spline and the sleeve. The spline is a protruding rectangular prism-shaped part, and its protruding part can be inserted into the spline groove of the sleeve, so as to realize the rotational fit of the shaft and the sleeve, and realize the transmission and bearing of force. The spline shaft is mainly used in the transmission system of the automobile. In addition, it is also widely used in various industrial machines and equipment. If the runout of the spline shaft is not good, not only the shaft is easy to be damaged, but also the sleeve will be damaged, the torque transmitted is inaccurate, and many other phenomena will occur, resulting in many collateral losses. Therefore, the research and development of the detection device for the axial runout of the spline shaft is of representative significance in the industry. Summary of the invention
[0003] The purpose of the present invention is to solve the problem of detecting the axial runout of the existing spline shaft, and to provide a detection device for the axial runout of the spline shaft tooth profile of an automobile steering gear, which can realize rapid detection of the axial runout of the spline shaft and solve the problem of detecting the axial runout of spline shaft products. The detection device is convenient, fast, easy to learn, and accurate in detection for loading and unloading shaft parts.
[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a detection device for the axial runout of the tooth profile of the spline shaft of the steering gear of an automobile, characterized in that: the detection device comprises a left slide seat group, a right slide seat group, and a measuring mechanism group, the left slide seat group and the right slide seat group are installed in the positioning slide groove of the main board through the top seat locking nut, the locking handle, the T-key, the locking pin, and the locking pin top screw; the precision guide rail is fixed in the linear rail positioning groove of the main board through the locking nut; the measuring mechanism group is installed on the linear guide rail seat; The left slide assembly comprises: a left slide, a top positioning seat, a Morse top, a top seat locking nut, a locking handle, a T-key, a locking pin, and a locking pin top screw; the Morse top is installed in the top positioning seat, the top positioning seat is installed on the left slide, the left slide is locked on the slide groove of the main board by the top seat locking nut, the locking handle, the T-key, the locking pin, and the locking pin top screw, the locking pin and the locking pin top screw constitute a limiting device, the T-key, the top seat locking nut, and the locking handle constitute a locking mechanism, which controls the locking and loosening of the left slide assembly on the slide groove of the main board; The right slide assembly includes: a top seat locking nut, a locking handle, a T-key, a locking pin, a locking pin top screw, a right slide seat, an oil seal end cover, an oil seal, a screw 1, a movable top sleeve, a gear shaft handle seat, a gear shaft, a gear shaft sleeve, a rear end cover, a spring, a rotating pad, a rear end rotating shaft, and a steel ball; the Morse top is installed in the movable top sleeve, the oil seal is installed in the oil seal end cover, and the oil seal end cover is fixed to the right end of the right slide seat by screw 1; the positioning rod of the gear shaft passes through the gear shaft sleeve and then passes through the hole of the gear shaft handle seat through the lock The tightening handle fixes the gear shaft on the gear shaft handle seat and then installs it on the right slide seat; the front end of the movable center sleeve is installed with a Morse center, and the rear end is installed with a rear rotating shaft, a spring is installed on the rear rotating shaft, and a rotating pad is installed on the right end of the spring. There is a steel ball between the rotating pad and the rear end cover, and the rear end cover is fixed to the left end of the right slide seat by screw one; the locking pin and the locking pin top screw constitute the right slide seat limit device, and the T-key, the center seat locking nut and the locking handle constitute the locking mechanism to control the locking and loosening of the right slide seat group on the slide groove of the main board; The measuring mechanism group includes: a linear guide seat, a Y-axis motion component; the linear guide seat is installed on the linear guide, the linear guide is installed in the linear rail groove of the main board and is fixed and locked by bolts, and the Y-axis motion component is installed on the linear guide seat; the Y-axis motion component includes a slide seat, a slide, a handle, a Mitutoyo micrometer, a universal joint bracket, a positioning block, screw two, screw three, a handwheel handle, a handwheel, a hexagon socket head screw, a screw pad, a screw, a front positioning plate, a nut, a pad, a spring pad, an M8-5 top screw, a rear positioning plate, and a screw four. The slide seat is installed above the linear guide seat, and then the nut on the slide is fixedly installed, and the handwheel handle is fixed to the handwheel by screw three Wheel, install the screw on the front positioning plate and the rear handwheel on the screw, then install the screw pad and fix it with the hex socket head screw, then install the slide on the slide seat, turn the handwheel to screw its screw into the nut, install the rear positioning plate to the rear end of the slide and fix it with screw four, then install the pad and spring pad in the right side hole of the slide and fix it with M8-5 top screw. The key function of the M8-5 top screw is to adjust the sliding tightness and clearance between the slide seat and the slide; the universal joint bracket is fixed on the slide, and the Mitutoyo micrometer is installed on the other end of the universal joint bracket for actual measurement of the core rod. Finally, the handle is installed on the slide.
[0005] The X-direction moving distance of the left slide and the right slide is 430mm, the Y-direction moving distance of the slide on the linear guide seat is 34mm, the height difference between the tops of the left slide and the right slide is within 0.005, the parallelism of the locating grooves of the left and right slides and the linear guide installed on the main board is within 0.003, and the parallelism of the top reference and the linear guide is within 0.005. After clamping the standard correction rod on the two tops and fixing them, calibrate the Mitutoyo micrometer to see if it is within the allowable deviation range. After confirming that the inspection is correct, remove the standard correction rod and clamp the spline product for inspection.
[0006] The spline product is required to have uniform axial direction, with center holes retained at both ends and coaxial within 0.005; one end of the inspection product is pushed into the Morse center of the left slide, and the locking handle above the right slide is rotated to drive the gear inside the gear shaft handle seat to rotate, so that the pushing movable center sleeve and Morse center inside the right slide move, and the locking handle of the gear shaft handle seat is rotated, and the center is pushed into the center hole at the other end of the product. At the same time, the spring pushes the movable center sleeve and Morse center to clamp the product position.
[0007] The linear guide seat together with the components on the slide seat are moved left and right on the linear guide by pushing the handle, thereby driving the Mitutoyo micrometer to move left and right. Shaking the handwheel handle drives the universal joint bracket and the Mitutoyo micrometer head needle to press on the surface of the product to be tested. Push the handle at a constant speed to observe the changes in the dial pointer of the micrometer.
[0008] The base under the mainboard is fixed to the bottom of the mainboard using M5 threads to provide support.
[0009] One end of the locking pin is a 45° inclined cone, and one end of the locking pin top screw is a 90° cone. The locking pin and the locking pin top screw constitute a cross-ejection locking principle. Locking pins are installed on the lower sides of the left slide and the right slide to eliminate the gap between the left slide and the right slide on one side of the slide groove of the main board, ensuring that the parallelism of the left slide and the right slide in the slide groove and the linear rail positioning groove is within 0.003. The locking handle 7 and the locking pin top screw can be loosened to push the left and right slide assemblies to move left and right, and the position can be confirmed by locking.
[0010] The detection length range of the detection device is 1~430mm, and the detection accuracy is 0.005.
[0011] A detection method using the detection device is characterized in that: first, the detection accuracy of the detection device is verified using a standard calibration rod, and the axial runout is detected by clamping the detection device on the spline shaft to be detected, which specifically includes the following steps: S1: Calibrate using a φ35*400 standard calibration rod: Clamp the standard calibration rod onto the test device, press the calibration rod with the dial gauge head, push the handle and observe the needle swinging. If the needle is stable, the calibration is complete. S2: Detection of axial runout of spline shaft: Clamp the spline shaft onto the detection device in the same way, loosen the hydraulic nut of the universal joint bracket, press the dial gauge head on the tooth profile of the spline shaft to be detected, tighten the hydraulic nut of the universal joint bracket, and then push the handle to observe the swing of the dial needle to confirm whether the axial runout is within the allowable range, that is, whether it is qualified. Detect the number of teeth according to the tooth profile detection standard requirements, rotate the spline shaft to detect the next tooth profile for detection, and so on. Complete all the tests as required. If all the test results are qualified, the spline axial runout is qualified.
[0012] The invention can realize the axial runout detection of keyed or toothed shaft products of different lengths and diameters, and is convenient and quick to clamp and disassemble, has strong applicability, can be directly used for batch products or products of different specifications, and has obvious application effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the top view of the structure of the detection device of the present invention; Figure 2 It is a schematic diagram of the main structure of the detection device of the present invention; Figure 3 It is a structural schematic diagram of the left slide assembly; Figure 4 It is a schematic diagram of the structure of the right slide assembly; Figure 5 It is a schematic diagram of the top view of the structure of the measuring mechanism group; Figure 6 It is a schematic diagram of the main structure of the measuring mechanism group; Figure 7 This is a schematic diagram of the structure of the motherboard mounting base; In the figure: 1-base, 2-main board, 3-left slide seat, 4-top positioning seat, 5-Morse top, 6-top seat locking nut, 7-locking handle, 8-T-key, 9-locking pin, 10-locking pin top screw, 11-right slide seat, 12-oil seal end cover, 13-oil seal, 14-screw 1, 15-movable top sleeve, 16-gear shaft handle seat, 17-gear shaft, 18-gear shaft sleeve, 19-rear end cover, 20-spring, 21-rotating pad, 22-rear end rotating shaft, 23-steel ball, 24-straight Linear guide seat, 25-slide seat, 26-slide, 27-handle, 28-Mitutoyo micrometer, 29-universal joint bracket, 30-positioning block, 31-screw two, 32-screw three, 33-handwheel handle, 34-handwheel, 35-hexagon socket head screw M5×10, 36-screw pad, 37-screw, 38-front positioning plate, 39-nut, 40-washer, 41-spring washer, 42-M8-5 top screw, 43-rear positioning plate, 44-screw four, 45-standard correction rod, 46-high precision line. DETAILED DESCRIPTION
[0014] The present invention is described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments. Example 1
[0015] like Figure 1-Figure 2As shown, a detection device for axial runout of the tooth profile of a spline shaft of a steering gear of an automobile, the detection device comprises a left slide assembly, a right slide assembly, and a measuring mechanism assembly, the left slide assembly and the right slide assembly are installed in the positioning slide groove of the main board 2 through a top seat locking nut 6, a locking handle 7, a T-key 8, a locking pin 9, and a locking pin top screw 10; a precision guide rail 46 is fixed in the linear rail positioning groove of the main board 2 through a locking nut; the measuring mechanism assembly is installed on a linear guide rail seat 24; like Figure 3 As shown, the left slide assembly includes: a left slide 3, a top positioning seat 4, a Morse top 5, a top seat locking nut 6, a locking handle 7, a T-key 8, a locking pin 9, and a locking pin top screw 10; the Morse top 5 is installed in the top positioning seat 4, and the top positioning seat 4 is installed on the left slide 3. The left slide 3 is locked on the slide groove of the main board 2 by the top seat locking nut 6, the locking handle 7, the T-key 8, the locking pin 9, and the locking pin top screw 10. The locking pin 9 and the locking pin top screw 10 constitute a limiting device, and the T-key 8, the top seat locking nut 6, and the locking handle 7 constitute a locking mechanism to control the locking and loosening of the left slide assembly on the slide groove of the main board 2; like Figure 4 As shown, the right slide assembly includes: a top seat locking nut 6, a locking handle 7, a T-key 8, a locking pin 9, a locking pin top screw 10, a right slide seat 11, an oil seal end cover 12, an oil seal 13, a screw 14, a movable top sleeve 15, a gear shaft handle seat 16, a gear shaft 17, a gear shaft sleeve 18, a rear end cover 19, a spring 20, a rotating pad 21, a rear end rotating shaft 22, and a steel ball 23; the Morse top 5 is installed in the movable top sleeve 15, the oil seal 13 is installed in the oil seal end cover 12, and the oil seal end cover 12 is fixed to the right end of the right slide seat 11 by a screw 14; the positioning rod of the gear shaft 17 passes through the gear shaft sleeve 18 and then passes through the gear shaft handle seat 1 6 through the locking handle 7 to fix the gear shaft 17 on the gear shaft handle seat 16 and then install it on the right slide seat 11; the front end of the movable top sleeve 15 is installed with a Morse top 5, and the rear end is installed with a rear rotating shaft 22, and a spring 20 is installed on the rear rotating shaft 22. A rotating pad 21 is installed on the right end of the spring 20. There is a steel ball 23 between the rotating pad 21 and the rear end cover 19. The rear end cover 19 is fixed to the left end of the right slide seat 11 by a screw 14; the locking pin 9 and the locking pin top screw 10 constitute a right slide seat limit device, and the T-key 8, the top seat locking nut 6 and the locking handle 7 constitute a locking mechanism to control the locking and loosening of the right slide seat group on the slide groove of the main board 2; like Figure 5-Figure 6As shown, the measuring mechanism group includes: a linear guide seat 24, a Y-axis motion component; the linear guide seat 24 is installed on a linear guide 46, the linear guide 46 is installed in the linear rail groove of the main board 2 and is fixed and locked by bolts, and the Y-axis motion component is installed on the linear guide seat 24; the Y-axis motion component includes a slide seat 25, a slide 26, a handle 27, a Sanfeng micrometer 28, a universal joint bracket 29, a positioning block 30, a screw two 31, a screw three 32, a handwheel handle 33, a handwheel 34, a hexagon socket head screw 35, a screw pad 36, a screw 37, a front positioning plate 38, a nut 39, a pad 40, a spring pad 41, an M8-5 top screw 42, a rear positioning plate 43, and a screw four 44. The slide seat 25 is installed above the linear guide seat 24, and then the nut 39 on the slide 26 is fixedly installed, and the handwheel handle 33 is fixed by screw three 3 2 is fixed on the hand wheel 34, the screw rod 37 is installed on the front positioning plate 38, and the rear hand wheel 34 is also installed on the screw rod 37, and then the screw rod pad 36 is installed and fixed with the hexagon socket cylindrical head screw 35, and then the slide 36 is installed on the slide seat 25, and after the hand wheel 34 is turned and its screw rod 37 is screwed into the nut 39, the rear positioning plate 43 is installed to the rear end of the slide 26 and fixed and locked with the screw four 44, and then the pad 40 and the spring pad 41 are installed in the right side hole of the slide 26 and fixed with the M8-5 top screw 42. The key function of the M8-5 top screw 42 is to adjust the sliding tightness and clearance between the slide seat 25 and the slide 26; the universal joint bracket 29 is fixed on the slide 26, and the other end of the universal joint bracket 29 is installed with the Sanfeng micrometer 28 for the actual measurement of the core rod detection, and finally the handle 27 is installed on the slide 26.
[0016] The X-direction moving distance of the left slide and the right slide is 430mm, the Y-direction moving distance of the slide on the linear guide seat 24 is 34mm, the height difference between the tops of the left slide and the right slide is within 0.005, the parallelism of the locating grooves of the left and right slides and the linear guide installed on the main board 2 is within 0.003, and the parallelism of the top reference and the linear guide is within 0.005. After clamping the standard correction rod 45 on the two tops and fixing them, calibrate the Mitutoyo micrometer 28 to see if it is within the allowable deviation range. After confirming that the inspection is correct, remove the standard correction rod 45 and clamp the spline product for inspection.
[0017] The spline product is required to be uniform in axial direction, with center holes retained at both ends and coaxial within 0.005; one end of the inspection product is pushed into the Morse center 5 of the left slide, and the locking handle 7 above the right slide 11 is rotated to drive the gear inside the gear shaft handle seat 16 to rotate, so that the pushing movable center sleeve 15 and the Morse center 5 inside the right slide 11 are moved, and the locking handle 7 of the gear shaft handle seat 16 is rotated, and the center is pushed into the center hole at the other end of the product. At the same time, the spring 20 pushes the movable center sleeve 15 and the Morse center 5 to clamp the product position.
[0018] The linear guide seat 24 together with the components on the slide seat 25 are moved left and right on the linear guide by pushing the handle 27, thereby driving the Mitutoyo micrometer 28 to move left and right. Shaking the handwheel handle 33 drives the universal joint bracket 29 and the needle of the Mitutoyo micrometer 28 to press on the surface of the product to be tested, and the handle 27 is pushed at a constant speed to observe the changes of the dial pointer of the micrometer.
[0019] like Figure 7 As shown, the four bases 1 under the mainboard 2 are fixed to the bottom of the mainboard 2 using M5 threads to play a supporting role.
[0020] One end of the locking pin 9 is a 45° inclined cone, and one end of the locking pin top screw 10 is a 90° cone. The locking pin 9 and the locking pin top screw 10 constitute a cross-cross ejection locking principle. Locking pins 9 are installed on the lower sides of the left slide 3 and the right slide 11 to eliminate the gap between the left slide 3 and the right slide 11 on one side of the slide groove of the main board 2, and ensure that the parallelism of the left slide 3 and the right slide 11 in the slide groove and the linear rail positioning groove is within 0.003. Loosen the locking handle 7 and the locking pin top screw 10 to push the left and right slide assemblies to move left and right, and lock them to confirm the position.
[0021] The detection length range of the detection device is 1~430mm, and the detection accuracy is 0.005. Example 2
[0022] A detection method using the detection device described in Example 1, first using a standard calibration rod 45 to verify the detection accuracy of the detection device, and then clamping the detection device on the spline shaft to be tested to detect axial runout, specifically including the following steps: S1: Calibrate using a φ35*400 standard calibration rod 45: Clamp the standard calibration rod 45 onto the detection device, press the calibration rod with the dial gauge head, and push the handle 27 to observe the swing of the needle. If the needle is stable, the calibration is completed. S2: Detection of axial runout of spline shaft: Clamp the spline shaft onto the detection device in the same way, loosen the hydraulic nut of the universal joint bracket 29, press the dial gauge head on the tooth profile of the spline shaft to be detected, tighten the hydraulic nut of the universal joint bracket 29, and then push the handle 27 to observe the swing of the dial needle to confirm whether the axial runout is within the allowable range, that is, whether it is qualified. Detect the number of teeth according to the tooth profile detection standard requirements, rotate the spline shaft to detect the next tooth profile for detection, and so on. Complete all the tests as required. If all the test results are qualified, the spline axial runout is qualified.
Claims
1. A detection device for axial runout of a spline shaft tooth profile of a steering gear of an automobile, characterized in that: The detection device comprises a left slide assembly, a right slide assembly, and a measuring mechanism assembly. The left slide assembly and the right slide assembly are installed in the positioning slide groove of the main board (2) through a top seat locking nut (6), a locking handle (7), a T-key (8), a locking pin (9), and a locking pin top screw (10); the precision guide rail (46) is fixed in the linear guide positioning groove of the main board (2) through a locking nut; the measuring mechanism assembly is installed on the linear guide rail seat (24); The left slide assembly comprises: a left slide (3), a top positioning seat (4), a Morse top seat (5), a top seat locking nut (6), a locking handle (7), a T-key (8), a locking pin (9), and a locking pin top screw (10); the Morse top seat (5) is installed in the top positioning seat (4), the top positioning seat (4) is installed on the left slide (3), the left slide (3) is locked on the slide groove of the main board (2) by the top seat locking nut (6), the locking handle (7), the T-key (8), the locking pin (9), and the locking pin top screw (10), the locking pin (9) and the locking pin top screw (10) form a limiting device, and the T-key (8), the top seat locking nut (6), and the locking handle (7) form a locking mechanism to control the locking and loosening of the left slide assembly on the slide groove of the main board (2); The right slide assembly comprises: a top seat locking nut (6), a locking handle (7), a T-key (8), a locking pin (9), a locking pin top screw (10), a right slide seat (11), an oil seal end cover (12), an oil seal (13), a screw 1 (14), a movable top sleeve (15), a gear shaft handle seat (16), a gear shaft (17), a gear shaft sleeve (18), a rear end cover (19), a spring (20), a rotating pad (21), a rear end rotating shaft (22), and a steel ball (23); the Morse top (5) is installed in the movable top sleeve (15), the oil seal (13) is installed in the oil seal end cover (12), and the oil seal end cover (12) is fixed to the right end of the right slide seat (11) by means of a screw 1 (14); the positioning rod of the gear shaft (17) passes through the gear shaft sleeve (18) and then passes through the gear shaft handle The gear shaft (17) is fixed on the gear shaft handle seat (16) through a locking handle (7) and then installed on the right slide seat (11); the front end of the movable center sleeve (15) is installed with a Morse center (5), the rear end is installed with a rear rotation shaft (22), the rear rotation shaft (22) is installed with a spring (20), the right end of the spring (20) is installed with a rotating pad (21), a steel ball (23) is arranged between the rotating pad (21) and the rear end cover (19), and the rear end cover (19) is fixed to the left end of the right slide seat (11) by a screw (14); the locking pin (9) and the locking pin top screw (10) constitute a right slide seat limit device, the T-key (8), the center seat locking nut (6) and the locking handle (7) constitute a locking mechanism, and control the locking and loosening of the right slide seat assembly on the slide groove of the main board (2); The measuring mechanism group comprises: a linear guide seat (24), a Y-direction motion component; the linear guide seat (24) is mounted on a linear guide (46), the linear guide (46) is mounted in a linear guide groove of a main board (2) and is fixed and locked by bolts, and the Y-direction motion component is mounted on the linear guide seat (24); the Y-direction motion component comprises a slide seat (25), a slide (26), a handle (27), a Mitutoyo micrometer (28), a universal joint bracket (29), a positioning block (30), a screw second (31), Screw three (32), handwheel handle (33), handwheel (34), hexagon socket head screw (35), screw washer (36), screw (37), front positioning plate (38), nut (39), washer (40), spring washer (41), M8-5 top screw (42), rear positioning plate (43), screw four (44), slide seat (25) is installed above the linear guide seat (24), and then the nut (39) on the slide (26) is fixed and installed. The handwheel handle (33) is screwed through screw three ( 32) is fixed on the hand wheel (34), the screw rod (37) is installed on the front positioning plate (38), the rear hand wheel (34) is also installed on the screw rod (37), and then the screw rod pad (36) is installed and fixed with the hexagon socket head screw (35), and then the slide (36) is installed on the slide seat (25), and the hand wheel (34) is turned to screw its screw rod (37) into the nut (39), and then the rear positioning plate (43) is installed on the rear end of the slide (26) and fixed with screw four (44). Tighten, then install the washer (40) and the spring washer (41) in the right side hole of the slide (26) and fix it with the M8-5 top screw (42). The key function of the M8-5 top screw (42) is to adjust the sliding tightness and clearance between the slide seat (25) and the slide (26); the universal joint bracket (29) is fixed on the slide (26), and the other end of the universal joint bracket (29) is installed with a Sanfeng micrometer (28) for actual measurement of the core rod. Finally, the handle (27) is installed on the slide (26).
2. A detection device for axial runout of a spline shaft tooth profile of a steering gear of an automobile according to claim 1, characterized in that: The X-direction moving distance of the left slide and the right slide is 430 mm, the Y-direction moving distance of the slide on the linear guide seat (24) is 34 mm, the height difference between the top of the left slide and the right slide is within 0.005, the parallelism of the positioning grooves of the left and right slides and the linear guide installed on the main board (2) is within 0.003, and the parallelism of the top reference and the linear guide is within 0.
005. After the standard calibration rod (45) is clamped and fixed on the two tops, the Mitutoyo micrometer (28) is calibrated to see if it is within the allowable deviation range. After confirming that the detection is correct, the standard calibration rod (45) is removed and the spline product is clamped for detection.
3. A detection device for axial runout of a spline shaft tooth profile of a steering gear of an automobile according to claim 2, characterized in that: The spline product is required to be uniform in axial direction, with center holes retained at both ends and coaxial within 0.005; one end of the test product is pushed into the Morse center (5) of the left slide, and the locking handle (7) above the right slide (11) is rotated to drive the gear inside the gear shaft handle seat (16) to rotate, so that the pushing movable center sleeve (15) and the Morse center (5) inside the right slide (11) move, and the locking handle (7) of the gear shaft handle seat (16) is rotated, and the center is pushed into the center hole at the other end of the product, and at the same time, the spring (20) pushes the movable center sleeve (15) and the Morse center (5) to clamp the product position.
4. A detection device for axial runout of a spline shaft tooth profile of a steering gear of an automobile according to claim 3, characterized in that: The linear guide seat (24) together with the components on the slide seat (25) are moved left and right on the linear guide by pushing the handle (27), thereby driving the Mitutoyo micrometer (28) to move left and right. The hand wheel handle (33) is shaken to drive the universal joint bracket (29) and the Mitutoyo micrometer (28) to press the needle on the surface of the product to be tested. The handle (27) is pushed at a constant speed to observe the changes of the dial pointer of the micrometer.
5. A detection device for axial runout of the spline shaft tooth profile of a steering gear of an automobile according to claim 4, characterized in that: The four bases (1) under the main board (2) are fixed to the bottom of the main board (2) using M5 threads to play a supporting role.
6. A device for detecting axial runout of a spline shaft tooth profile of a steering gear of an automobile according to claim 5, characterized in that: One end of the locking pin (9) is a 45° inclined cone, and one end of the locking pin top screw (10) is a 90° cone. The locking pin (9) and the locking pin top screw (10) constitute a cross-cross ejection locking principle. The locking pins (9) are installed on the lower side of the left slide (3) and the right slide (11) to eliminate the gap between the left slide (3) and the right slide (11) on one side of the slide groove of the main board (2), ensuring that the parallelism of the left slide (3) and the right slide (11) in the slide groove and the linear rail positioning groove is within 0.
003. The locking handle (7) and the locking pin top screw (10) can be loosened to push the left and right slide assemblies to move left and right, and the position can be confirmed by locking.
7. A detection device for axial runout of a spline shaft tooth profile of a steering gear of an automobile according to any one of claims 1 to 6, characterized in that: The detection length range of the detection device is 1~430mm, and the detection accuracy is 0.
005.
8. A detection method using the detection device according to claim 1, characterized in that: First, the detection accuracy of the detection device is verified using a standard calibration rod (45), and the axial runout is detected by clamping the detection device on the spline shaft to be detected, which specifically includes the following steps: S1: Calibrate using a φ35*400 standard calibration rod (45): Clamp the standard calibration rod (45) onto the detection device, press the calibration rod with the dial gauge head, push the handle (27) and observe the swing of the needle. If the needle is stable, the calibration is complete. S2: Detection of axial runout of the spline shaft: Clamp the spline shaft onto the detection device in the same way, loosen the hydraulic nut of the universal joint bracket (29), press the dial gauge head onto the tooth profile of the spline shaft to be detected, tighten the hydraulic nut of the universal joint bracket (29), and then push the handle (27) to observe the swing of the dial needle to confirm whether the axial runout is within the allowable range, that is, whether it is qualified. According to the tooth profile detection standard requirements, detect the number of teeth, rotate the spline shaft to detect the next tooth profile for detection, and so on. Complete all the tests as required. If all the test results are qualified, the spline axial runout is qualified.