End face spline detection device

Abstract

The utility model relates to the field of detection equipment, and discloses an end face spline detection device which comprises a base, a vertical threaded stand column is installed on the base, a V-shaped positioning block and a cross beam are rotationally connected to the threaded stand column, a dial indicator is connected to the tail end of the cross beam, and a circular detection positioning sleeve is placed on the base. The detection positioning sleeve carries out reference positioning through the V-shaped positioning block and the base, the upper end of an inner hole of the detection positioning sleeve is provided with a chamfer, the inner hole wall of the detection positioning sleeve serves as a hub bearing radial positioning face, and the top face of the detection positioning sleeve serves as a hub bearing axial positioning face. The top surface of the detection cover is an axial run-out detection surface, the side surface of the detection cover is a radial run-out detection surface, the center of the bottom of the detection cover is provided with a positioning column matched with an inner hole of the hub bearing for positioning, and detection spline teeth fully meshed with the hub bearing end face spline are processed on the outer side of the positioning column. The hub bearing end face spline detection device can stably, reliably and accurately detect a hub bearing end face spline.

Description

Technical Field

[0001] The utility model relates to the field of detection equipment, in particular to an end face spline detection device. Background Art

[0002] A hub bearing unit is used to rotatably support the wheels of an automobile on a suspension device. As a hub bearing unit, it is well known that an end face spline is formed on the end face of a hub bearing on the axial inner side (the inner side of the vehicle) of a hub wheel for mounting a driving wheel, and the end face spline has passive spline teeth that mesh with driving teeth formed on an outer ring of a constant velocity universal joint. In this hub unit, the rotational power of a driving shaft of an automobile is transmitted from the constant velocity universal joint to the hub wheel via the passive teeth.

[0003] For each of the passive teeth in the end face spline as described above, in order to properly mesh with the driving teeth of the constant velocity universal joint, various dimensional requirements such as tooth surface dimensions, arranged pitch, and coaxiality relative to the rotation center are specified with precision. Therefore, after manufacturing the hub unit, an inspection process is carried out, that is, various dimensions of the passive teeth are measured using a three-dimensional measuring device or the like to confirm whether the specified precision is obtained.

[0004] The passive teeth of the end face spline usually set the pitch plane during the meshing with the driving teeth of the constant velocity universal joint as the reference plane. However, since this design reference plane is only an imaginary plane, it cannot be used in the process of measuring the shape of the passive teeth of the actual product during the inspection process. Therefore, although in the past, various dimensions of the spline teeth were measured by using a machined surface such as a flange surface of the hub wheel or a wheel fitting surface as a temporary reference plane, in this case, the measurement error becomes large, and it is difficult to stably perform accurate dimensional measurement. Summary of the Utility Model

[0005] The utility model aims to provide an end face spline detection device to effectively detect the end face spline.

[0006] To achieve the above object, the utility model adopts the following technical scheme: An end face spline detection device includes a base. A vertical threaded column is installed at one side end of the base. A V-shaped positioning block and a cross beam are rotatably connected to the threaded column. A dial indicator is detachably connected to the end of the cross beam. A circular detection positioning sleeve is placed on the base. The detection positioning sleeve is benchmark-positioned by the V-shaped positioning block and the base. A chamfer is provided at the upper end of the inner hole of the detection positioning sleeve. The inner hole wall of the detection positioning sleeve serves as a radial positioning surface of the hub bearing, and the top surface of the detection positioning sleeve serves as an axial positioning surface of the hub bearing. It further includes a detection cover buckled on the end face spline of the hub bearing. The top surface of the detection cover is an axial runout detection surface, and the side surface is a radial runout detection surface. A positioning column that cooperates with and positions the inner hole of the hub bearing is provided at the center of the bottom of the detection cover. A detection spline tooth that fully meshes with the end face spline of the hub bearing is machined on the outside of the positioning column.

[0007] Preferably, as an improvement, the base includes a rectangular bottom plate and a reference plate. An ear plate is integrally formed at the side end of the bottom plate, and an installation hole for installing a threaded column is machined on the ear plate. The reference plate is detachably connected to the upper end of the bottom plate, and the detection positioning sleeve is placed on the reference plate.

[0008] Preferably, as an improvement, an inner hole for sleeving on the threaded column is machined at the tip of the V-shaped positioning block. The V-shaped fork side end of the V-shaped positioning block is in a sharp wedge shape. Two lower locking nuts for fixing the V-shaped positioning block are connected to the threaded column, and the V-shaped positioning block is located between the two lower locking nuts.

[0009] Preferably, as an improvement, one end of the cross beam is a sleeve sleeved on the threaded column. Two upper locking nuts for fixing the sleeve are connected to the threaded column, and the sleeve is located between the two upper locking nuts.

[0010] Preferably, as an improvement, the cross beam includes a runout cross beam and an end runout cross beam. A end runout meter base for vertically installing a dial indicator is detachably connected to the end of the end runout cross beam, and a runout meter base for horizontally installing a dial indicator is detachably connected to the end of the runout cross beam.

[0011] Preferably, as an improvement, a fixed seat is integrally formed at the end of the runout cross beam. The end runout meter base, the runout meter base and the fixed seat all include a square seat body. A through hole is provided in the middle of the square seat body. A slit penetrating to the through hole is provided on one side of the square seat body. Threaded holes for connecting fasteners are machined on the square seat body on both sides of the slit. A connecting column perpendicular to the through hole is also integrally formed on the runout meter base. The connecting column or the dial indicator located in the through hole can be clamped by reducing the slit through the fastener.

[0012] Preferably, as an improvement, a circular positioning disk is integrally formed at the end of the end runout cross beam. A circular positioning plate is provided in the middle of the positioning disk. A circular mounting plate facing away from the slit is integrally formed on the square seat body of the end runout meter base. A mounting groove corresponding to the positioning plate is provided on the mounting plate. Connecting holes for connecting the two through fasteners are provided on both the mounting plate and the positioning disk.

[0013] The principle and advantages of this solution are as follows: In actual application, when detecting end runout, the V-shaped positioning block is fixed on the outer circle of the column through the lower locking nut, and its height is adjusted as needed and fixed with locking nuts on both sides; the detection positioning sleeve (with the hub bearing placed face up) is placed on the reference plate, and the contact points between two points on the outer circle of the detection positioning sleeve and the V-shaped fork of the V-shaped positioning block, and the detection positioning sleeve is manually pushed appropriately towards the center of the V-shaped fork with a thrust force, so as to position the detection positioning sleeve in the way of three points determining a circle. The hub bearing with end spline teeth is placed on the detection positioning sleeve (the hub bearing placement surface), the radial positioning surface of the hub bearing forms a radial positioning with the inner hole surface of the detection positioning sleeve, and the axial positioning surface of the hub bearing forms an axial positioning with the hub bearing placement surface of the detection positioning sleeve. The chamfer on the inner hole wall of the detection positioning sleeve effectively avoids interference with the outer circle of the radial positioning of the hub bearing and the corner of the flange surface. The detection cover is buckled on the end spline of the hub main body, the detection spline meshes with the end spline, and the positioning post is inserted into the inner hole of the hub bearing. The end runout cross beam is fixed on the outer circle of the column, and its height is adjusted as needed and fixed with upper locking nuts on both sides. The end runout gauge holder is fixed on the positioning disk of the end runout cross beam and locked with an Allen screw. The dial indicator is installed in the end runout gauge holder and then locked with an Allen screw, so that the slit of the end runout gauge holder shrinks to fix the pointer. The measuring head of the dial indicator points to the detection position of the end runout on the top surface of the detection cover. The hub bearing is rotated manually or automatically at a constant speed for one or several weeks, and the variation of the pointer of the dial indicator at the axial runout detection position is the end tooth runout value between the center line of the hub bearing and the end spline teeth.

[0014] Radial runout detection: The inner hole of the V-shaped positioning block is fixed on the outer circle of the column, and its height is adjusted as needed and fixed with lower locking nuts on both sides; the detection positioning sleeve with the hub bearing placed face up is placed on the reference plate, and the contact points between two points on the outer circle of the detection positioning sleeve and the V-shaped fork of the V-shaped positioning block, and the detection positioning sleeve is manually pushed appropriately towards the center of the V-shaped fork with a thrust force, so as to position the detection positioning sleeve in the way of three points determining a circle. The hub bearing with end spline teeth is placed on the hub bearing placement surface at the top of the detection positioning sleeve. The radial positioning surface of the hub bearing forms a radial positioning with the inner hole surface of the detection positioning sleeve, and the axial positioning surface of the hub bearing forms an axial positioning with the top surface of the detection positioning sleeve. The large chamfer on the inner hole wall of the detection positioning sleeve effectively avoids interference with the outer circle of the radial positioning of the hub bearing and the corner of the flange surface. The radial runout cross beam is fixed on the outer circle of the column, and its height is adjusted as needed and fixed with upper locking nuts on both sides; the radial runout gauge holder is installed in the through hole of the fixed seat of the radial runout cross beam and locked with an Allen screw, so that the slit of the fixed seat shrinks to fix the radial runout gauge holder. The dial indicator is installed in the radial runout gauge holder and then locked with an Allen screw, so that the slit of the radial runout gauge holder shrinks to fix the pointer. The measuring head of the dial indicator points to the detection position of the radial runout on the side surface of the detection cover. The hub bearing is rotated manually or automatically at a constant speed for one or several weeks, and the variation of the pointer of the dial indicator at the radial runout detection position is the radial runout value between the center line of the hub bearing and the end spline teeth.

[0015] The primary purpose of axial and radial runout testing is to ensure that face spline parameters, such as tooth thickness error (tooth thickness consistency), adjacent pitch difference, and cumulative tooth profile error, meet the requirements of the product drawing. At the same time, the radial and axial runout values between the hub bearing centerline and the face spline teeth are within the required ranges. Using this testing device enables stable, reliable, and accurate testing of hub bearing face splines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of end jump detection according to an embodiment of the present invention.

[0017] Figure 2 Schematic diagram of radial jump detection according to an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the coordination of the hub bearing, the detection and positioning sleeve, and the detection cover in an embodiment of the present utility model.

[0019] Figure 4 This is a cross-sectional view of a detection and positioning sleeve according to an embodiment of the present utility model.

[0020] Figure 5 This is a schematic structural diagram of a V-shaped positioning block according to an embodiment of the present utility model.

[0021] Figure 6 This is a schematic structural diagram of the end jump beam according to an embodiment of the present utility model.

[0022] Figure 7 This is a schematic structural diagram of the radial jump beam according to an embodiment of the present utility model.

[0023] Figure 8 This is a structural diagram of the radial jump meter stand according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The figure marks in the drawings of the specification include: base plate 1, reference plate 2, detection positioning sleeve 3, V-shaped positioning block 4, lower locking nut 5, threaded column 6, sleeve 7, upper locking nut 8, end runout beam 9, positioning plate 10, dial indicator 11, end runout meter seat 12, mounting plate 13, detection cover 14, radial runout beam 15, fixing seat 16, radial runout meter seat 17, positioning column 18, detection spline 19, radial runout detection surface 20, axial runout detection surface 21, chamfer 22, positioning plate 23, slit 24, wheel hub bearing 25, connecting column 26.

[0026] Examples, such as the attached Figure 1As shown: An end face spline detection device includes a base, and the base includes a rectangular bottom plate 1 and a reference plate 2. The reference plate 2 is bolted to the upper end of the bottom plate 1. An ear plate is integrally formed on the side end of the bottom plate 1, and a mounting hole is machined on the ear plate. A vertical threaded column 6 is inserted into the mounting hole, and a V-shaped positioning block 4 and a cross beam are rotatably connected to the threaded column 6.

[0027] Combined with Figure 5 As shown, an inner hole for sleeving on the threaded column 6 is machined at the tip of the V-shaped positioning block 4. The V-shaped fork side end of the V-shaped positioning block 4 is in a sharp wedge shape. Two lower locking nuts 5 for fixing the V-shaped positioning block 4 are connected to the threaded column 6, and the V-shaped positioning block 4 is located between the two lower locking nuts 5.

[0028] One end of the cross beam is a sleeve 7 sleeved on the threaded column 6. Two upper locking nuts 8 for fixing the sleeve 7 are connected to the threaded column 6, and the sleeve 7 is located between the two upper locking nuts 8. A dial indicator 11 is detachably connected to the end of the cross beam. Combined with Figure 6 、 Figure 7 As shown, the cross beam includes a runout cross beam 15 and an end runout cross beam 9. An end runout table seat 12 for vertically mounting the dial indicator 11 is detachably connected to the end of the end runout cross beam 9. A runout table seat 17 for horizontally mounting the dial indicator 11 is detachably connected to the end of the runout cross beam 15. A fixed seat 16 is integrally formed at the end of the runout cross beam 15. The end runout table seat 12, the runout table seat 17 and the fixed seat 16 all include a square seat body. A through hole is provided in the middle of the square seat body. A cut seam 24 penetrating to the through hole is provided on one side of the square seat body. Threaded holes for connecting fasteners are machined on the square seat body on both sides of the cut seam 24. Combined with Figure 8 As shown, a connecting column 26 perpendicular to the through hole is also integrally formed on the runout table seat 17. The connecting column 26 or the dial indicator 11 located in the through hole can be clamped by reducing the cut seam 24 through fasteners. A circular positioning disk 10 is integrally formed at the end of the end runout cross beam 9. A circular positioning plate 23 is provided in the middle of the positioning disk 10. A circular mounting plate 13 facing away from the cut seam 24 is integrally formed on the square seat body of the end runout table seat 12. A mounting groove corresponding to the positioning plate 23 is provided on the mounting plate 13. Connecting holes for connecting the two through fasteners are provided on both the mounting plate 13 and the positioning disk 10.

[0029] A circular detection positioning sleeve 3 is placed on the reference plate 2. The detection positioning sleeve 3 is reference-positioned by the V-shaped positioning block 4 and the base. Combined with Figure 4 As shown, a chamfer 22 is provided at the upper end of the inner hole of the detection positioning sleeve 3. The inner hole wall of the detection positioning sleeve 3 serves as the radial positioning surface of the hub bearing 25, and the top surface of the detection positioning sleeve 3 serves as the axial positioning surface of the hub bearing 25.

[0030] Combined with Figure 3As shown, it further includes a detection cover 14 buckled on the end face spline of the hub bearing 25. The top surface of the detection cover 14 is an axial runout detection surface 21, and the side surface is a radial runout detection surface 20. A positioning post 18 that is matched and positioned with the inner hole of the hub bearing 25 is provided at the center of the bottom of the detection cover 14. A detection spline 19 tooth that is fully engaged with the end face spline of the hub bearing 25 is machined on the outside of the positioning post 18.

[0031] The specific implementation process is as follows: When performing end face runout detection, as Figure 1 shown, fix the V-shaped positioning block 4 on the outer circle of the column through the lower locking nut 5, adjust the height as needed, and fix it with locking nuts on both sides; place the detection positioning sleeve 3 (with the placement surface of the hub bearing 25 facing up) on the reference plate 2. The contact points between the two points on the outer circle of the detection positioning sleeve 3 and the V-shaped fork of the V-shaped positioning block 4 and manually apply an appropriate thrust to fix the detection positioning sleeve 3 towards the center of the V-shaped fork, so as to position the detection positioning sleeve 3 in the way of three points determining a circle. Place the hub bearing 25 with end face spline teeth on the detection positioning sleeve 3 (the placement surface of the hub bearing 25). The radial positioning surface of the hub bearing 25 forms a radial positioning with the inner hole surface of the detection positioning sleeve 3, and the axial positioning surface of the hub bearing 25 forms an axial positioning with the placement surface of the hub bearing 25 of the detection positioning sleeve 3. The chamfer 22 on the inner hole wall of the detection positioning sleeve 3 effectively avoids interference with the outer circle of the radial positioning of the hub bearing 25 and the corner of the flange surface. Buckle the detection cover 14 on the end face spline of the hub main city, the detection spline 19 meshes with the end face spline, and the positioning post 18 is inserted into the inner hole of the hub bearing 25. Fix the end face runout cross beam 9 on the outer circle of the column, adjust the height as needed, and fix it with upper locking nuts 8 on both sides. Fix the end face runout gauge base 12 on the positioning disk 10 of the end face runout cross beam 9, lock it with an inner hexagon screw, install the dial indicator 11 into the end face runout gauge base 12, and then lock it with an inner hexagon screw to make the slit 24 of the end face runout gauge base 12 contract to achieve the effect of fixing the pointer. The measuring head of the dial indicator 11 points to the detection position of the end face runout on the top surface of the detection cover 14. Manually or automatically rotate the hub bearing 25 at a constant speed for one or several weeks. The variation of the pointer of the dial indicator 11 at the axial runout detection position is the end tooth runout value between the center line of the hub bearing 25 and the end face spline teeth.

[0032] When performing radial runout detection, as Figure 2As shown in the figure, the inner hole of the V-shaped positioning block 4 is fixed on the outer circle of the column. Adjust the height as needed and fix it with the lower lock nuts 5 on both sides. Place the hub bearing 25 placement surface of the detection positioning sleeve 3 facing up on the reference plate 2. The contact points between the two points on the outer circle of the detection positioning sleeve 3 and the V-shaped fork of the V-shaped positioning block 4, and manually apply an appropriate thrust to fix the detection positioning sleeve 3 towards the center of the V-shaped fork. Thus, the detection positioning sleeve 3 is positioned in the way of three points determining a circle. Place the hub bearing 25 with end face spline teeth on the hub bearing 25 placement surface at the top of the detection positioning sleeve 3. The radial positioning surface of the hub bearing 25 and the inner hole surface of the detection positioning sleeve 3 form radial positioning, and the axial positioning surface of the hub bearing 25 and the top surface of the detection positioning sleeve 3 form axial positioning. The large chamfer 22 on the inner hole wall of the detection positioning sleeve 3 effectively avoids interference with the outer circle of the radial positioning of the hub bearing 25 and the corner of the flange surface. Fix the runout cross beam 15 on the outer circle of the column, adjust the height as needed, and fix it with the upper lock nuts 8 on both sides. Install the runout gauge base 17 into the through hole of the fixed seat 16 of the runout cross beam 15 and lock it with an inner hexagon screw, so that the slit 24 of the fixed seat 16 shrinks to achieve the effect of fixing the runout gauge base 17. Install the dial indicator 11 into the runout gauge base 17 and lock it with an inner hexagon screw again, so that the slit 24 of the runout gauge base 17 shrinks to achieve the effect of fixing the pointer. The measuring head of the dial indicator 11 points to the detection position of the radial runout on the side of the detection cover 14. Manually or automatically rotate the hub bearing 25 at a uniform speed for one or several weeks. The variation of the pointer of the dial indicator 11 at the radial runout detection position is the radial runout value between the center line of the hub bearing 25 and the end face spline teeth.

[0033] The main purpose of the axial and radial runout detection is to ensure that the tooth thickness error (tooth thickness consistency) of the end face spline, the adjacent tooth pitch difference, the tooth profile cumulative error and other end face spline parameters meet the requirements of the product drawing, and at the same time ensure that the radial and axial runout values between the center line of the hub bearing 25 and the end face spline teeth are within the range required by the product drawing. Using such a detection device can stably, reliably and accurately detect the end face spline of the hub bearing 25.

[0034] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. An end face spline detection device, characterized in that: It includes a base. A vertical threaded column is installed at one end of the base. A V-shaped positioning block and a cross beam are rotatably connected to the threaded column. A dial indicator is detachably connected to the end of the cross beam. A circular detection positioning sleeve is placed on the base. The detection positioning sleeve is benchmark-positioned through the V-shaped positioning block and the base. A chamfer is provided at the upper end of the inner hole of the detection positioning sleeve. The inner hole wall of the detection positioning sleeve serves as the radial positioning surface of the hub bearing, and the top surface of the detection positioning sleeve serves as the axial positioning surface of the hub bearing. It also includes a detection cover buckled on the end face spline of the hub bearing. The top surface of the detection cover is the axial runout detection surface, and the side surface is the radial runout detection surface. A positioning column that is matched and positioned with the inner hole of the hub bearing is provided at the center of the bottom of the detection cover. Detection spline teeth that are fully engaged with the end face spline of the hub bearing are machined on the outside of the positioning column.

2. The end face spline detection device according to claim 1, wherein: The base includes a rectangular bottom plate and a reference plate. An ear plate is integrally formed at the side end of the bottom plate. An installation hole for installing the threaded column is machined on the ear plate. The reference plate is detachably connected to the upper end of the bottom plate. The detection positioning sleeve is placed on the reference plate.

3. The end face spline detection device according to claim 2, characterized in that: The tip of the V-shaped positioning block is machined with an inner hole for sleeving on the threaded column. The V-shaped fork side end of the V-shaped positioning block is in a sharp wedge shape. Two lower locking nuts for fixing the V-shaped positioning block are connected to the threaded column. The V-shaped positioning block is located between the two lower locking nuts.

4. The end face spline detection device according to claim 3, characterized in that: One end of the cross beam is a sleeve sleeved on the threaded column. Two upper locking nuts for fixing the sleeve are connected to the threaded column. The sleeve is located between the two upper locking nuts.

5. The end face spline detection device according to claim 4, characterized in that: The cross beam includes a radial runout cross beam and an end runout cross beam. A end runout table seat for vertically installing a dial indicator is detachably connected to the end of the end runout cross beam. A radial runout table seat for horizontally installing a dial indicator is detachably connected to the end of the radial runout cross beam.

6. The end face spline detection device according to claim 5, wherein: A fixed seat is integrally formed at the end of the radial runout cross beam. The end runout table seat, the radial runout table seat, and the fixed seat all include a square seat body. A through hole runs through the middle of the square seat body. A cut is provided on one side of the square seat body and runs through to the through hole. Threaded holes for connecting fasteners are machined on the square seat body on both sides of the cut. A connecting column perpendicular to the through hole is also integrally formed on the radial runout table seat. The connecting column or the dial indicator located in the through hole can be clamped by reducing the cut through the fastener.

7. The end face spline detection device according to claim 6, characterized in that: A circular positioning disk is integrally formed at the end of the end runout cross beam. A circular positioning plate is provided in the middle of the positioning disk. A circular mounting plate facing away from the cut is integrally formed on the square seat body of the end runout table seat. A mounting groove corresponding to the positioning plate is provided on the mounting plate. Connecting holes for connecting the two through fasteners are provided on both the mounting plate and the positioning disk.

Images