Detection device for tooth profile axial runout of spline shaft of automobile steering device

Abstract

The utility model belongs to the technical field of spline tooth-shaped shaft axial run-out detection, and particularly relates to a detection device for tooth-shaped axial run-out of a spline shaft of an automobile steering device. The detection device comprises a left sliding seat group, a right sliding seat group and a measuring mechanism group. The left sliding seat group and the right sliding seat group are installed in a positioning sliding groove of a main board through a center seat locking nut, a locking handle, a T-shaped key, a locking pin and a locking pin jackscrew. The linear guide rail is fixed in the linear guide rail positioning groove of the main plate through a locking nut; and the measuring mechanism group is arranged on the linear guide rail seat. According to the utility model, axial run-out detection of shaft products with keys or tooth grooves with different lengths and diameters can be realized. And clamping and disassembling are convenient and fast, applicability is high, batch products or products of different specifications can be directly used, and the application effect is obvious.

Description

TECHNICAL FIELD

[0001] The utility model belongs to spline tooth shape axle axial runout detection technical field, specifically related to a kind of detection device for detecting spline axial runout. BACKGROUND

[0002] Spline shaft is a commonly used mechanical transmission mode, main function is to transmit power to rotating equipment to realize various functions.Spline shaft is composed of shaft, spline and shaft sleeve three parts, wherein spline is a convex rectangular prism part, the convex part can be inserted into spline groove of shaft sleeve, so that the rotation of shaft and shaft sleeve is matched, force transmission and bearing are realized.Spline shaft is mainly applied in automobile transmission system.In addition, it is also widely used in various industrial machines and equipment.If the runout of spline shaft is not good, not only the shaft is damaged, but also the shaft sleeve is damaged, torque transmission is not accurate and many other phenomena, so that many associated losses are generated.Therefore, the research and development of spline shaft axial runout detection device have industry representative significance. SUMMARY

[0003] The utility model discloses a kind of detection devices for realizing the axial runout of spline shaft tooth shape of automobile steering gear, which can realize the axial runout of spline shaft fast detection, solve the axial runout detection of spline shaft product, and the detection device is easy to learn, accurate to detect.

[0004] The utility model discloses a kind of detection devices for realizing the axial runout of spline shaft tooth shape of automobile steering gear, which can realize the axial runout of spline shaft fast detection, solve the axial runout detection of spline shaft product, and the detection device is easy to learn, accurate to detect.

[0005] The left slide group includes: left slide, centering seat locking nut, morris centering pin, centering seat locking nut, locking handle, T-shaped key, locking pin, locking pin top wire;Morris centering pin is installed in centering seat, centering seat is installed on left slide, left slide is locked on the slide groove of mainboard by centering seat locking nut, locking handle, T-shaped key, locking pin, locking pin top wire, locking pin and locking pin top wire form limiting device, T-shaped key, centering seat locking nut, locking handle form locking mechanism, control left slide group locking and loosening on the slide groove of mainboard;

[0006] The right slide block group comprises a top center seat locking nut, a locking handle, a T-shaped key, a locking pin, a locking pin top wire, a right slide block, an oil seal end cover, an oil seal, a screw one, a movable top center sleeve, a gear shaft handle seat, a gear shaft, a gear shaft sleeve, a rear end cover, a spring, a rotary pad, a rear end rotary shaft, and a steel ball. The Morse top center is installed in the movable top center sleeve, the oil seal is installed in the oil seal end cover, the oil seal end cover is fixed on the right end of the right slide block through the screw one, 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, the gear shaft is fixed on the gear shaft handle seat through the locking handle, and then the gear shaft is installed on the right slide block. The movable top center sleeve is installed with the Morse top center at the front end and the rear end rotary shaft at the rear end, the rear end rotary shaft is installed with the spring, the right end of the spring is installed with the rotary pad, the rotary pad and the middle of the rear end cover are provided with the steel ball, the rear end cover is fixed on the left end of the right slide block through the screw one, the locking pin and the locking pin top wire form the right slide block limiting device, the T-shaped key, the top center seat locking nut and the locking handle form the locking mechanism, and the locking and loosening of the right slide block group on the sliding groove of the main plate are controlled.

[0007] The measuring mechanism group comprises a linear guide rail seat and a Y-direction movement assembly. The linear guide rail seat is installed on the linear guide rail, the linear guide rail is installed in the linear rail groove of the main plate and is fixed and locked through bolts, and the Y-direction movement assembly is installed on the linear guide rail seat. The Y-direction movement assembly comprises a sliding table seat, a sliding table, a handle, a Fowler micrometer, a universal joint support, a positioning block, a screw two, a screw three, a hand wheel handle, a hand wheel, an internal hexagonal cylindrical head screw, a screw rod pad, a screw rod, a front positioning plate, a nut, a pad, a spring pad, an M8-5 top wire, a rear positioning plate, and a screw four. The sliding table seat is installed above the linear guide rail seat, the nut on the sliding table is fixed and installed, the screw three is used for fixing the hand wheel handle on the hand wheel, the screw rod is installed on the front positioning plate, the hand wheel is also installed on the screw rod, the screw rod pad is installed and fixed through the internal hexagonal cylindrical head screw, then the sliding table is installed on the sliding table seat, the screw rod of the hand wheel is screwed into the nut after the hand wheel is rotated, the rear positioning plate is installed at the rear end of the sliding table and is fixed and locked through the screw four, the pad and the spring pad are installed in the right side hole of the sliding table and are fixed through the M8-5 top wire, and the key role of the M8-5 top wire is to adjust the sliding tightness and gap between the sliding table seat and the sliding table. The universal joint support is fixed on the sliding table, the other end of the universal joint support is installed with the Fowler micrometer for actual measurement of the detection of the mandrel, and finally the handle is installed on the upper surface of the sliding table.

[0008] The X-direction moving distance of the left slide block and the right slide block is 430 mm, the Y-direction moving distance of the sliding table on the linear guide rail seat is 34 mm, the height difference of the top centers of the left slide block and the right slide block is within 0.005, the parallelism of the positioning grooves of the left and right slide blocks and the linear guide rail installed on the main plate is within 0.003, the parallelism of the top center reference and the linear guide rail is within 0.005, the standard correction bar is clamped on the two top centers after being fixed, then the Fowler micrometer is calibrated, whether it is within the allowable deviation range, the standard correction bar is removed after the detection is confirmed to be correct, and the spline product is clamped and detected.

[0009] The spline product requires uniformity in the axial direction, and the top hole at both ends is kept coaxial within 0.005; the product is detected by pressing one end of the product onto the Morse taper of the left slide seat, rotating the locking handle above the right slide seat to drive the gear inside the gear shaft handle seat to rotate, moving the push movable taper sleeve and the Morse taper inside the right slide seat, rotating the locking handle of the gear shaft handle seat, pressing the taper into the other end of the product, and simultaneously the spring pushes the movable taper sleeve and the Morse taper to clamp the product in place.

[0010] The linear guide rail seat together with the components on the slide seat moves left and right on the linear guide rail by pushing the handle, thereby driving the three-feng micrometer to move left and right, the universal joint support and the three-feng micrometer head needle are pressed on the surface of the product to be measured by rotating the hand wheel handle, and the hand wheel is pushed at a uniform speed to observe the change of the dial pointer of the micrometer.

[0011] The bottom seat under the main board is fixed to the bottom of the main board by M5 wire to support.

[0012] One end of the locking pin is a 45° oblique taper, and one end of the locking pin top wire is a 90° cone, the locking pin and the locking pin top wire form a cross-shaped ejection locking principle, the left slide seat and the right slide seat are installed with locking pins on the side surface below, which is used to eliminate the gap between the left slide seat and the right slide seat on one side of the sliding groove of the main board, and ensure that the parallelism of the left slide seat and the right slide seat in the sliding groove and the positioning groove of the linear rail is within 0.003, the left and right slide seat assemblies can be moved left and right by loosening the locking handle 7 and the locking pin top wire, and the position can be confirmed by locking.

[0013] The detection length range of the detection device is 1-430mm, and the detection accuracy is 0.005.

[0014] A detection method using the detection device, first using a standard correction rod to verify the detection accuracy of the detection device, and clamping the detection shaft on the detection device for detecting axial runout, specifically including the following steps:

[0015] S1: using a standard correction rod of φ35*400 to calibrate: clamping the standard correction rod to the detection device, pressing the correction rod with the micrometer head, and observing the swing of the needle, and the calibration is completed when the needle is stable;

[0016] S2: detection of spline shaft axial runout: in the same way, clamp the spline shaft on the detection device, loosen the oil pressure nut of the universal joint support, press the micrometer head on the spline of the spline shaft to be detected, tighten the oil pressure nut of the universal joint support, then push the handle to observe the swing of the dial needle, confirm whether the axial runout is within the allowable range, that is, whether it is qualified, detect the number of teeth according to the spline detection standard, rotate the spline shaft to detect the next spline, and so on.

[0017] The utility model discloses can realize the axial runout detection of the keyed or splined shaft product of different length and diameter. And convenient and fast clamping and dismounting, suitability is strong, for batch product or different specification product can directly use, application effect is obvious. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overhead structure schematic diagram of the detection device of the utility model;

[0019] Figure 2 It is the main view structure schematic diagram of the detection device of the utility model;

[0020] Figure 3 It is the left slide seat group structure schematic diagram;

[0021] Figure 4 It is the right slide seat group structure schematic diagram;

[0022] Figure 5 It is the overhead structure schematic diagram of the measurement mechanism group;

[0023] Figure 6 It is the main view structure schematic diagram of the measurement mechanism group;

[0024] Figure 7 It is the structure schematic diagram of mainboard installation base;

[0025] In the drawing: 1-base, 2-mainboard, 3-left slide seat, 4-top pin positioning seat, 5-Morse top pin, 6-top pin 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 one, 15-movable top pin sleeve, 16-gear shaft handle seat, 17-gear shaft, 18-gear shaft sleeve, 19-rear end cover, 20-spring, 21-rotary pad, 22-rear end rotary shaft, 23-steel ball, 24-linear guide rail seat, 25-sliding table seat, 26-sliding table, 27-handle, 28-thousandth micrometer, 29-universal joint support, 30-positioning block, 31-screw two, 32-screw three, 33-hand wheel handle, 34-hand wheel, 35-M5x10 internal hexagonal cylindrical head screw, 36-screw rod pad, 37-screw rod, 38-front positioning plate, 39-nut, 40-pad, 41-spring pad, 42-M8-5 top screw, 43-rear positioning plate, 44-screw four, 45-standard correction bar, 46-linear guide rail. DETAILED DESCRIPTION

[0026] The utility model will be explained in detail in connection with the drawings and examples, but the utility model is not limited to specific examples. EXAMPLE

[0027] AsFigures 1-2 As shown, a device for detecting axial runout of a spline shaft tooth profile of an automobile steering gear comprises a left slide assembly, a right slide assembly, and a measuring mechanism assembly. The left and right slide assemblies are mounted in the positioning grooves of a main plate 2 via 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 linear guide 46 is fixed in the linear guide positioning groove of the main plate 2 via a locking nut. The measuring mechanism assembly is mounted on a linear guide rail seat 24.

[0028] 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 to 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;

[0029] 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 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 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 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, and a steel ball 23 is arranged 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 11 by a screw 14; the locking pin 9 and the locking pin top screw 10 constitute the right slide limit device, and the T-key 8, the top seat locking nut 6 and the locking handle 7 constitute the locking mechanism, which controls the locking and loosening of the right slide group on the slide groove of the main board 2;

[0030] like Figures 5-6As shown, the measurement mechanism group includes: linear guide rail seat 24, Y direction movement assembly; linear guide rail seat 24 is installed on linear guide rail 46, linear guide rail 46 is installed in the linear rail groove of main plate 2 and is fixed and locked by bolts, Y direction movement assembly is installed on linear guide rail seat 24; Y direction movement assembly includes sliding table seat 25, sliding table 26, handle 27, three feng thousandth table 28, universal joint support 29, positioning block 30, screw two 31, screw three 32, hand wheel handle 33, hand wheel 34, inner hexagonal cylindrical head screw 35, screw rod pad 36, screw rod 37, front positioning plate 38, nut 39, pad 40, spring pad 41, M8-5 jack 42, rear positioning plate 43, screw four 44, sliding table seat 25 is installed on the top of linear guide rail seat 24, then the nut 39 on the sliding table 26 is fixedly installed, the screw three 32 is fixed on the hand wheel 34 through the hand wheel handle 33, the screw rod 37 is installed on the front positioning plate 38, then the hand wheel 34 is also installed on the screw rod 37, then the screw rod pad 36 is installed and is fixed by the inner hexagonal cylindrical head screw 35, then the sliding table 26 is installed to the sliding table seat 25, after the screw rod 37 of the hand wheel 34 is rotated into the nut 39, the rear positioning plate 43 is installed to the rear end of the sliding table 26 and is fixed and locked by the screw four 44, then the pad 40 and the spring pad 41 are installed in the right side hole of the sliding table 26 and are fixed by the M8-5 jack 42, the key role of the M8-5 jack 42 is to adjust the sliding tightness and gap between the sliding table seat 25 and the sliding table 26; the universal joint support 29 is fixed on the sliding table 26, the three feng thousandth table 28 is installed on the other end of the universal joint support 29 for actual measurement of the detection of the mandrel, finally the handle 27 is installed on the top of the sliding table 26.

[0031] The X direction moving distance of the left sliding seat and the right sliding seat is 430mm, the Y direction moving distance of the sliding table on the linear guide rail seat 24 is 34mm, the height difference of the center of the left sliding seat and the right sliding seat is within 0.005, the parallelism of the positioning groove of the linear guide rail on the main plate 2 and the left and right sliding seats is within 0.003, the parallelism of the center of the top and the linear guide rail is within 0.005, after the standard correction bar 45 is clamped on the two centers and is fixed, the three feng thousandth table 28 is calibrated, whether it is within the allowable deviation range, after the detection is confirmed to be correct, the standard correction bar 45 is removed, the spline product is clamped and detected.

[0032] The spline product requires uniformity in the axial direction, the two ends retain the center hole and are coaxial within 0.005; the product is detected by inserting the Morse center of the left sliding seat 5 on one end, rotating the locking handle 7 on the top of the right sliding seat 11 to drive the gear inside the gear shaft handle seat 16 to rotate, moving the push movable center sleeve 15 and the Morse center 5 inside the right sliding seat 11, rotating the locking handle 7 of the gear shaft handle seat 16, the center is inserted into the other end center hole 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.

[0033] The linear guide rail seat 24 together with the components on the slide seat 25 moves left and right on the linear guide rail by pushing the handle 27, thereby driving the three-millimeter dial gauge 28 to move left and right, the swing handle 33 drives the universal joint bracket 29 and the three-millimeter dial gauge 28 to press on the surface of the product to be measured, and the handle 27 is pushed at a constant speed to observe the change of the dial pointer of the dial gauge.

[0034] As shown in Figure 7 The four bases 1 under the main plate 2 are fixed to the bottom of the main plate 2 by M5 wires to play a supporting role.

[0035] One end of the locking pin 9 is a 45° oblique conical surface, and one end of the locking pin top wire 10 is a 90° cone. The locking pin 9 and the locking pin top wire 10 constitute a cross-shaped ejection locking principle. The left slide seat 3 and the right slide seat 11 are both installed with the locking pin 9 on the lower side surface, which is used to eliminate the gap of the left slide seat 3 and the right slide seat 11 on one side of the sliding groove of the main plate 2, to ensure that the parallelism of the left slide seat 3 and the right slide seat 11 in the sliding groove and the linear rail positioning groove is within 0.003. The left and right slide seat assemblies can be moved left and right by loosening the locking handle 7 and the locking pin top wire 10, and the position can be confirmed after locking.

[0036] The detection length range of the detection device is 1-430mm, and the detection accuracy is 0.005. Embodiment

[0037] A detection method using the detection device of embodiment 1, first using a standard correction rod 45 to verify the detection accuracy of the detection device, and clamping the spline shaft on the detection device to detect the axial runout, specifically including the following steps:

[0038] S1: using a standard correction rod 45 with a diameter of φ35*400 for calibration: clamp the standard correction rod 45 to the detection device, press the dial head on the correction rod, and push the handle 27 to observe the swing of the dial needle. If the dial needle is stable, the calibration is complete.

[0039] S2: detection of spline shaft axial runout: clamp the spline shaft to the detection device in the same way, loosen the oil pressure nut of the universal joint bracket 29, press the dial head on the spline of the spline shaft to be detected, tighten the oil pressure nut of the universal joint bracket 29, then push the handle 27 to observe the swing of the dial needle, and confirm whether the axial runout is within the allowable range, i.e. whether it is qualified. According to the detection standard requirements, detect the number of teeth, rotate the spline shaft to detect the next tooth shape, and so on. If all the detection results are qualified, the spline shaft axial runout is qualified.

Claims

1. A device for detecting axial runout of a spline shaft tooth profile of an automobile steering gear, characterized in that: The detection device comprises a left slide group, a right slide group, and a measuring mechanism group, wherein the left slide group and the right slide group are installed in the positioning slide groove of the main board (2) through 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 linear guide rail (46) is fixed in the linear rail positioning groove of the main board (2) through the locking nut; the measuring mechanism group 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 (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 to 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; 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); 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 (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 rotary pad (21), a rear end rotary 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 (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 The gear shaft (17) is fixed to the gear shaft handle seat (16) through the locking handle (7) on the hole of the seat (16) and then installed on the right slide seat (11); the front end of the movable top sleeve (15) is installed with a Morse top (5), the rear end is installed with a rear end rotating shaft (22), a spring (20) is installed on the rear end rotating shaft (22), the right end of the spring (20) is installed with a rotating pad (21), a steel ball (23) is provided 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 the right slide seat limiting device, the T-key (8), the top seat locking nut (6) and the locking handle (7) constitute the locking mechanism, which controls the locking and loosening of the right slide seat group on the slide groove of the main board (2); The measuring mechanism group includes: a linear guide rail seat (24), a Y-direction motion component; the linear guide rail seat (24) is installed on the linear guide rail (46), the linear guide rail (46) is installed in the linear rail groove of the main board (2) and is fixed and locked by bolts, and the Y-direction motion component is installed on the linear guide rail seat (24); the Y-direction motion component includes a slide seat (25), a slide (26), a handle (27), a Sanfeng micrometer (28), a universal joint bracket (29), and a positioning block (30). , screw two (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 nut (39) is installed on the slide (26). The handwheel handle (33) is fixed to the handwheel (34) by screw three (32), the screw rod (37) is installed on the front positioning plate (38), the handwheel (34) is installed on the screw rod (37), the screw rod pad (36) is fixed by the hexagon socket head screw (35), the slide (26) is installed on the slide seat (25), the screw rod (37) is installed with the nut (39), the rear positioning plate (43) is installed at the rear end of the slide (26) and is fixed and locked by screw four (44). The pad (40) and the spring pad (41) are installed in the right side hole of the slide (26) and fixed by the M8-5 top screw (42). The M8-5 top screw (42) is used 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. The handle (27) is installed on the slide (26).

2. The device for detecting axial runout of a spline shaft tooth profile of an automobile steering gear according to claim 1, characterized in that: The X-direction moving distance of the left and right slides is 430 mm, the Y-direction moving distance of the slide on the linear guide rail 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 rail on the main board (2) is within 0.003, and the parallelism of the top reference and the linear guide rail is within 0.

005.

3. The device for detecting axial runout of a spline shaft tooth profile of an automobile steering gear according to claim 1, characterized in that: The four bases (1) under the mainboard (2) are fixed to the bottom of the mainboard (2) using M5 threads to provide support.

4. The device for detecting axial runout of a spline shaft tooth profile of a steering gear of an automobile according to claim 3, 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 pin (9) is 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) with the linear rail positioning groove in the slide groove is within 0.

003. Loosening the locking handle (7) and the locking pin top screw (10) can push the left and right slide assemblies to move left and right, and locking can confirm the position.

5. A device for detecting axial runout of a spline shaft tooth profile of an automobile steering gear according to any one of claims 1 to 4, characterized in that: The detection length range of the detection device is 1~430mm, and the detection accuracy is 0.005.

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