Hub bolt hole deburring device

Abstract

The utility model relates to the technical field of hub machining, in particular to a hub bolt hole deburring device which comprises a base, a plurality of clamping jaws fixedly connected to the base in a surrounding mode, a mandrel fixedly connected to the core portion of the base and a handle, a plurality of inserting rods fixedly connected to the bottom face of the handle in a surrounding mode, and the handle is inserted into the upper end of the mandrel in a sleeved mode through the inserting rods. A sliding base is installed on the handle, a motor is fixedly connected to the sliding base, and an output shaft of the motor is connected with a polishing roller through a coupler. Shaft sleeves are installed on the grinding rollers, conical surfaces are formed on the bottom faces of the shaft sleeves, and the radiuses of the cross sections of the conical surfaces are gradually decreased from top to bottom. The shaft sleeve and the grinding roller are in sliding connection, and the shaft sleeve and the grinding roller are detachably connected through a screw II. The bolt hole deburring device has the beneficial effect that each bolt hole can be subjected to sufficient deburring treatment through manual operation.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub processing technology, and more specifically to a deburring device for wheel hub bolt holes. Background Technology

[0002] During the manufacturing process of wheel hubs, burrs are easily generated in the bolt holes due to cutting, stamping, and other processes. These burrs cause numerous problems. From an assembly perspective, burrs hinder the bolts from passing smoothly through the bolt holes, leading to installation difficulties and increasing assembly time and costs. From the perspective of wheel hub lifespan, burrs can cause stress concentration. While traditional manual deburring methods are flexible, existing manual tools and methods have significant shortcomings. Operators typically use simple tools such as files and sandpaper, relying on experience and feel to deburr the bolt holes. This method makes it difficult to ensure consistent deburring force and depth for each bolt hole, easily resulting in incomplete deburring or damage to the bolt hole surface. Furthermore, prolonged repetitive manual operation is labor-intensive, inefficient, and fails to guarantee high-quality deburring results for every bolt hole. Utility Model Content

[0003] This utility model provides a deburring device for wheel hub bolt holes, which has the advantage of enabling each bolt hole to be fully deburred through manual operation.

[0004] A deburring device for wheel hub bolt holes includes a base, a plurality of grippers fixedly attached around the base, a spindle fixedly attached to the core of the base, and a handle. A plurality of insert rods are fixedly attached around the bottom surface of the handle. The handle is inserted into the upper end of the spindle through the plurality of insert rods. A slide is mounted on the handle, and a motor is fixedly attached to the slide. The output shaft of the motor is connected to a grinding roller through a coupling.

[0005] The grinding roller is fitted with a bushing, and the bottom surface of the bushing is formed with a conical surface, the cross-sectional radius of which decreases from top to bottom.

[0006] The bushing is slidably connected to the grinding roller, and the bushing and the grinding roller are detachably connected by screw II.

[0007] A locating ring is fixed to the lower end of the bushing near the conical surface.

[0008] The grinding roller has grooves. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0010] Figure 1 A schematic diagram of a deburring device for wheel hub bolt holes;

[0011] Figure 2 This is a schematic diagram of the base structure;

[0012] Figure 3 This is a schematic diagram of the handle's structure;

[0013] Figure 4 This is a schematic diagram of the grinding roller structure;

[0014] Figure 5 This is a schematic diagram of the bushing structure;

[0015] Figure 6 A schematic diagram of the assembly of the bushing and the grinding roller;

[0016] Figure 7 This is a schematic diagram of a wheel hub mounting structure using a deburring device for wheel hub bolt holes.

[0017] In the figure: base 101; gripper 102; spindle 103; slot 104; handle 201; insert rod 202; crossbeam 203; slide 204; motor 205; grinding roller 206; rib groove 207; screw I 208; bushing 301; conical surface 302; screw II 303; limit ring 304. Detailed Implementation

[0018] See Figures 1 to 4 The diagram shows an embodiment of the operation of grinding and deburring the inner wall of a bolt hole according to the present invention.

[0019] A deburring device for wheel hub bolt holes includes a base 101, a plurality of grippers 102 fixedly connected around the base 101, a spindle 103 fixedly connected to the core of the base 101, and a handle 201. A plurality of insert rods 202 are fixedly connected around the bottom surface of the handle 201. The handle 201 is inserted into the upper end of the spindle 103 through the plurality of insert rods 202. A slide 204 is mounted on the handle 201. A motor 205 is fixedly connected to the slide 204. The output shaft of the motor 205 is connected to a grinding roller 206 through a coupling.

[0020] After the handle 201 is removed from the spindle 103, the wheel hub body is placed between multiple jaws 102 on the base 101. At the same time, the spindle 103 passes through the center hole of the wheel hub, the multiple jaws 102 limit the position of the wheel hub, and the spindle 103 limits the center part of the wheel hub.

[0021] The handle 201 is used to reinsert the multiple insertion rods 202 back into the upper end of the mandrel 103, while simultaneously inserting the grinding roller 206 into one of the bolt holes. At this point, the mandrel 103 is positioned between the insertion rods 202, indirectly limiting the position of the handle 201. Then, the motor 205 is started to drive the grinding roller 206 to rotate. The rotating grinding roller 206 grinds and removes burrs from the inner wall of the bolt hole, preventing burrs from hindering the bolt from being screwed in smoothly. After removing the burrs, the bolt can easily and accurately pass through the bolt hole, quickly completing the initial positioning and greatly improving assembly efficiency.

[0022] Lifting handle 201 upwards removes the grinding roller 206 from the current bolt hole. Rotating handle 201 then inserts the grinding roller 206 into the next bolt hole to continue grinding and deburring the inner wall of each bolt hole until all bolt holes are ground. This allows for precise manual deburring of each bolt hole.

[0023] For small-batch production or customized needs, the grinding method described in this application is more cost-effective. While automated grinding equipment is suitable for large-scale production, its initial investment and maintenance costs are high. The manual grinding method described in this application does not require complex equipment and is suitable for small-scale or flexible production scenarios. Secondly, for some high-precision wheel hubs, manual grinding can be fine-tuned according to the actual situation, avoiding over-grinding or under-grinding. Furthermore, manual operation allows for flexible adjustment of angle and force, ensuring that each bolt hole is adequately treated.

[0024] When it is necessary to grind the angled holes on the wheel hub, the handle 201 can be held by hand alone. In this case, it is not necessary to insert the insert rod 202 onto the spindle 103 to control the grinding roller 206 to be inserted into the angled hole for grinding. Alternatively, the handle 201 can be held by hand to make the rotating grinding roller 206 grind burrs on any exposed edge position on the wheel hub, which has a high degree of adaptability.

[0025] See Figure 5 and 6 A schematic diagram of an embodiment of the orifice chamfer according to the present invention is shown;

[0026] A bushing 301 is installed on the grinding roller 206. The bottom surface of the bushing 301 is formed with a conical surface 302, and the cross-sectional radius of the conical surface 302 decreases from top to bottom.

[0027] The grinding roller 206 can drive the bushing 301 to rotate synchronously. When the handle 201 is held and downward pressure is applied to the handle 201, the handle 201 transmits the pressure to the conical surface 302 on the grinding roller 206. When the conical surface 302 contacts the upper end of the bolt hole, the conical surface 302 can chamfer the upper end of the bolt hole. This achieves grinding of the inner wall of the bolt hole while chamfering the upper end of the bolt hole. The chamfering of the hole opening can effectively remove burrs from the hole opening, making the edge of the hole opening smoother, and also making it easier to insert bolts, shafts and other parts into the hole.

[0028] See Figure 5 and 6 The diagram shows an embodiment of deburring bolt holes of different depths according to the present invention.

[0029] The bushing 301 is slidably connected to the grinding roller 206, and the bushing 301 and the grinding roller 206 are detachably connected by screw II 303;

[0030] The relative position between the bushing 301 and the grinding roller 206 can be adjusted. The position of the bushing 301 is fixed by tightening the screw II 303 against the grinding roller 206, thereby adjusting the distance between the conical surface 302 and the bottom surface of the grinding roller 206. This allows for grinding, deburring, and chamfering of the inner walls of bolt holes with different offsets. Furthermore, when chamfering is not required, the bushing 301 can be removed from the grinding roller 206.

[0031] See Figure 6 A schematic diagram of an embodiment of the present invention that avoids excessive chamfering is shown.

[0032] A limiting ring 304 is fixedly connected to the lower end of the bushing 301 near the conical surface 302;

[0033] The maximum diameter of the conical surface 302 seamlessly transitions to the bottom surface of the limiting ring 304. This way, when the conical surface 302 is chamfered against the hole, the chamfering ends after the limiting ring 304 contacts the hole surface of the hub. The limiting ring 304 can control the degree of chamfering, preventing the circumferential surface of the bushing 301 with a diameter larger than the bolt hole diameter from contacting the hole and damaging the bolt hole diameter.

[0034] See Figure 4 The diagram shows an embodiment of timely removal of burr debris according to the present invention.

[0035] The grinding roller 206 is provided with a groove 207;

[0036] The burrs removed by grinding can be discharged in time through the groove 207. Timely removal of waste chips can effectively reduce the accumulation of chips and ensure the smoothness and finish of the hole wall surface.

[0037] See Figure 2 A schematic diagram of an embodiment of limiting the circumferential rotation of the handle 201 according to the present invention is shown.

[0038] The upper end of the spindle 103 is provided with a slot 104 that is adapted to multiple insert rods 202;

[0039] The engagement of the insert rod 202 and the slot 104 prevents the rotating grinding roller 206 from grinding and deburring the hole. When the handle 201 rotates circumferentially, the grinding roller 206 can maintain a stable vertical position for grinding and deburring.

[0040] When the grinding roller 206 is inserted into the bolt hole and the lower end of the conical surface 302 contacts the upper end of the hole, there is still a certain space between the bottom surface of the handle 201 and the top surface of the spindle 103, and there is also a certain space between the bottom surface of the insertion rod 202 and the top surface of the hub. This allows for manual downward pressing of the handle 201 to allow for downward movement when the grinding roller 206 drives the conical surface 302 to rotate and grind, so that the conical surface 302 can contact the hole to achieve the chamfering operation.

[0041] See Figure 1 and 3 The diagram shows an embodiment of the present invention applicable to different models of wheel hubs;

[0042] Two crossbeams 203 are fixedly connected to the handle 201, and the slide block 204 is slidably connected to the two crossbeams 203;

[0043] The slide block 204 can slide on the two crossbeams 203 to change the distance between the grinding roller 206 and the spindle 103, which is suitable for grinding hubs with different spacing between bolt holes and center holes.

[0044] See Figure 4 The diagram shows an embodiment of adjusting the position of the grinding roller 206 according to the present invention;

[0045] The slide block 204 and the crossbeam 203 are locked together by screw I 208; by manually tightening screw I 208 against the crossbeam 203, the position of the slide block 204 and the grinding roller 206 is fixed, thereby achieving the purpose of adjusting the position of the grinding roller 206.

[0046] See Figure 2 A schematic diagram of an embodiment of the present invention for avoiding scratching wheel hubs is shown.

[0047] The bottom surface of the insertion rod 202 and the top surface of the gripper 102 are both rounded to prevent the insertion rod 202 and the gripper 102 from scratching the wheel hub when installing the wheel hub and inserting the handle 201 into the spindle 103.

[0048] Furthermore, rubber pads are bonded and fixed to the inner wall of the gripper 102, the bottom surface of the insert rod 202, and the bottom surface of the limiting ring 304; the rubber pads protect the wheel hub clamping part and prevent scratches during the processing of the car wheel hub.

Claims

1. A deburring device for wheel hub bolt holes, characterized in that, The device includes a base with multiple grippers fixedly attached around it, a spindle fixedly attached to the core of the base, a handle with multiple insert rods fixedly attached around its bottom surface, the handle being inserted into the upper end of the spindle via the insert rods, a slide mounted on the handle, a motor fixedly attached to the slide, and a grinding roller connected to the output shaft of the motor via a coupling.

2. The deburring device for wheel hub bolt holes according to claim 1, characterized in that, A bushing is installed on the grinding roller. The bottom surface of the bushing is formed with a conical surface, and the cross-sectional radius of the conical surface decreases from top to bottom.

3. The deburring device for wheel hub bolt holes according to claim 2, characterized in that, The bushing and the grinding roller are slidably connected, and the bushing and the grinding roller are detachably connected by screw II.

4. The deburring device for wheel hub bolt holes according to claim 3, characterized in that, A limit ring is fixed to the lower end of the bushing near the conical surface.

5. The deburring device for wheel hub bolt holes according to claim 3, characterized in that, The grinding roller has grooves.

6. The deburring device for wheel hub bolt holes according to claim 1, characterized in that, The upper end of the spindle has slots that can be used to fit multiple insert rods.

7. The deburring device for wheel hub bolt holes according to claim 6, characterized in that, Two crossbeams are fixed to the handle, and the slide is slidably connected to the two crossbeams.

8. The deburring device for wheel hub bolt holes according to claim 7, characterized in that, The slide block is locked and fixed to the crossbeam by screw I.

9. The deburring device for wheel hub bolt holes according to claim 1, characterized in that, The bottom surface of the insertion rod and the top surface of the clamp are both rounded.

10. A deburring device for wheel hub bolt holes according to claim 4, characterized in that, Rubber pads are glued and fixed to the inner wall of the gripper, the bottom surface of the insertion rod, and the bottom surface of the limiting ring.

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