Fixture for turning spoke

Abstract

The utility model discloses a spoke turning clamp which comprises a connecting disc, a fixing block and a vertical lathe rod, the connecting disc is located above the fixing block, a positioning cone is fixedly arranged on the connecting disc, the vertical lathe rod sequentially penetrates through the positioning cone, the connecting disc and the fixing block, and the vertical lathe rod is respectively connected with the positioning cone, the connecting disc and the fixing block in a sliding mode. A mounting nut is arranged at one end of the vertical lathe rod, an expansion positioning pin is sleeved outside the positioning cone, the diameter size of the expansion positioning pin is increased along with penetration of the positioning cone, a lathe rod pull head is fixedly arranged at the other end of the vertical lathe rod, and the lathe rod pull head abuts against the expansion positioning pin. The fixing block is pulled so that the vertical lathe rod can drive the lathe rod pull head and the expansion positioning pin to move in the direction close to the positioning cone, and the diameter of the expansion positioning pin is increased under the action of the positioning cone so that the expansion positioning pin can be clamped with the spoke. The spoke positioning clamp has the advantages that the spoke positioning precision is high, and the spoke positioning clamp is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel processing, in particular to a clamp for turning wheel spokes. Background Art

[0002] The wheel spoke is a device for protecting the rim and spokes of the vehicle wheel. It is characterized by a pair of circular cover plates, the diameter of the cover plates is close to the diameter of the wheel rim, there is a hole in the center of the cover plate that is larger than the rotation axis of the wheel, there is an opening near the edge of the cover plate, and there is a ring wheel plate at the edge of the cover plate. The curved surface of the wheel plate can fit closely with the curved surface of the wheel rim. According to the structure of the spoke, the wheel is divided into auxiliary plate type and spoke type. At present, mainstream family cars all adopt auxiliary plate type spoke structure. In recent years, with the rapid development of the automobile industry, while higher requirements are put forward for the performance indicators of automobile power, handling, comfort, fuel economy, etc., the requirements for its safety performance are also getting higher and higher. As an important component of wheel bearing and driving, the quality of the wheel spoke is directly related to people's life safety. In the production of the wheel spoke, it is necessary to position the wheel spoke, and the center hole, outer diameter, end face and chamfer are processed by lathe turning. After the existing wheel spoke turning fixture positions the wheel spoke, it is difficult to ensure the position accuracy of each hole in the wheel spoke, and improvements need to be made. Utility Model Content

[0003] The utility model aims to provide a spoke turning fixture which has high positioning accuracy for the spoke and is easy to use.

[0004] The utility model provides a clamp for turning a spoke, comprising a connecting plate, a fixing block and a vertical turning rod, wherein the connecting plate is located above the fixing block, a positioning cone is fixedly arranged on the connecting plate, the vertical turning rod passes through the positioning cone, the connecting plate and the fixing block in sequence, and the vertical turning rod is slidably connected with the positioning cone, the connecting plate and the fixing block respectively;

[0005] One end of the vertical lathe rod is provided with a mounting nut, and an expansion positioning pin is provided on the outer sleeve of the positioning cone. The diameter of the expansion positioning pin increases as the positioning cone penetrates. The other end of the vertical lathe rod is fixedly provided with a lathe rod pull head, and the lathe rod pull head abuts against the expansion positioning pin. The fixing block is pulled so that the vertical lathe rod drives the lathe rod pull head and the expansion positioning pin to move in a direction close to the positioning cone. Under the action of the positioning cone, the diameter of the expansion positioning pin increases so that it is clamped with the wheel spoke.

[0006] Preferably, a disc spring is sleeved on the outer periphery of the vertical lathe rod, and two ends of the disc spring are respectively abutted against a fixing block and a mounting nut.

[0007] Preferably, a washer is provided on the outer periphery of the vertical lathe rod, and two sides of the washer are respectively in contact with the disc spring and the mounting nut.

[0008] Preferably, a cushion block is provided between the fixing block and the connecting plate, and the vertical lathe rod passes through the cushion block.

[0009] Preferably, a positioning groove is provided on the surface of the connection disk, the positioning cone is embedded in the positioning groove, a cone pressure block is sleeved on the outer periphery of the positioning cone, and the cone pressure block is fixed to the connection disk by bolt locking.

[0010] Preferably, a mounting screw hole is provided at one end of the vertical lathe rod close to the lathe rod pull head, a mounting hole is provided on the surface of the lathe rod pull head, and the lathe rod pull head is fixed to the vertical lathe rod by means of mounting bolts.

[0011] Preferably, a fixing hole is provided on the surface of the fixing block, and a fixing groove is provided along the circumference of the fixing hole. A pull rod is passed through the fixing hole, and a fixing nut is screwed on one end of the pull rod close to the connecting plate. A metal conical washer is provided on the outer periphery of the pull rod. The metal conical washer is located in the fixing groove, and its two sides are respectively in contact with the fixing block and the fixing nut.

[0012] Preferably, a through hole is provided on the surface of the connecting plate, the through hole corresponds to the position of the fixing hole, a mounting groove is provided along the circumference of the through hole, a pull rod disk is provided inside the mounting groove, and the pull rod disk is fixed to the connecting plate by bolt locking.

[0013] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0014] 1. The diameter of the positioning pin is enlarged by the expansion of the positioning cone, so that it is fastened to the spoke, so that the position of the spoke can be guaranteed within 0.3mm after turning, which not only has high positioning accuracy for the spoke, but also is easy to use.

[0015] 2. A metal conical washer is provided on the outer periphery of the pull rod, and the two sides of the metal conical washer are respectively in contact with the fixed block and the fixed nut. The setting of the metal conical washer allows the pull rod and the fixed block to swing at a certain angle, and the tilt angle can be compensated when the pull rod is not parallel to the fixed block.

[0016] 3. A pull rod disk is provided at the through hole of the connecting disk, and the pull rod disk and the connecting disk are detachably mounted. The setting of the pull rod disk can prevent iron filings from entering the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a spoke turning fixture according to an embodiment;

[0018] Figure 2 It is an embodiment Figure 1 A partial enlarged view in the middle;

[0019] Figure 3 It is an embodiment Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 4 2. It is a schematic diagram of the structure of the expanded positioning pin in the embodiment;

[0021] Figure 5 It is a partial cross-sectional view of the lathe bar pull head and the vertical lathe bar of the embodiment;

[0022] Figure 6 is a cross-sectional view of a connection disk of an embodiment;

[0023] Figure 7 It is an embodiment Figure 1 A partial enlarged view of point C in the middle;

[0024] Figure 8 is a cross-sectional view of a fixing block according to an embodiment.

[0025] : 1. fixing block; 11. fixing hole; 12. fixing groove; 2. connecting plate; 21. positioning groove; 22. through hole; 23. mounting groove; 24. pull rod plate; 3. vertical lathe rod; 31. mounting nut; 32. washer; 33. mounting screw hole; 4. spacer block; 5. positioning cone; 51. cone pressure block; 6. expansion positioning pin; 7. disc spring; 8. lathe rod pull head; 81. mounting hole; 82. mounting bolt; 9. pull rod; 91. fixing nut; 92. metal conical washer. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-8 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Reference Figure 1-Figure 4 A wheel spoke turning fixture comprises a fixing block 1, a connecting plate 2 and a plurality of vertical lathe rods 3, a plurality of cushion blocks 4 are arranged between the fixing block 1 and the connecting plate 2, a positioning cone 5 is fixedly arranged on the connecting plate 2, so that the position of the positioning cone 5 corresponds to the position of the cushion block 4, and an expansion positioning pin 6 is sleeved on the periphery of the positioning cone 5; a lathe pull head 8 is fixedly arranged on one end of the vertical lathe rod 3, and each vertical lathe rod 3 is sequentially passed through the positioning cone 5, the connecting plate 2, the cushion block 4 and the fixing block 1, so that the lathe pull head 8 abuts against the expansion positioning pin 6, a disc spring 7 and a washer 32 are sleeved from the other end of the vertical lathe rod 3, and a mounting nut 31 is screwed on the other end of the vertical lathe rod 3, so that the two ends of the disc spring 7 abut against the fixing block 1 and the washer 32 respectively, and the arrangement of the plurality of cushion blocks 4 plays a buffering role between the connecting plate 2 and the fixing block 1.

[0028] Reference Figure 2 and Figure 5 In order to facilitate the disassembly and replacement of the vertical lathe rod 3, a mounting screw hole 33 is opened at one end of the vertical lathe rod 3 away from the mounting nut 31, and a mounting hole 81 is opened on the surface of the head tie rod 9 correspondingly. When installing the surface of the head tie rod 9, the mounting hole 81 on the surface of the head tie rod 9 is made to correspond to the mounting screw hole 33 on the surface of the vertical lathe rod 3, and the mounting bolt 82 is inserted into the mounting hole 81 and screwed into the mounting screw hole 33, thereby making the lathe rod pull head 8 and the vertical lathe rod 3 not only firmly fixed but also easy to disassemble.

[0029] Reference Figure 2 and Figure 6 When it is necessary to fix spokes of different models, in order to facilitate the replacement of the positioning cone 5, a plurality of positioning grooves 21 are opened on the surface of the connecting disk 2, and the opening positions of the plurality of positioning grooves 21 correspond to the positions of the cushion block 4. The bottom end of the positioning cone 5 is set to an "L" shape, and the positioning cone 5 is installed into the positioning groove 21 on the surface of the connecting disk 2, so that the bottom surface of the positioning cone 5 is flush with the surface of the connecting disk 2, and a cone pressure block 51 is provided on the outer periphery of the positioning cone 5, so that the cone pressure block 51 is seated on the positioning cone 5 and the connecting disk 2, and the cone pressure block 51 and the connecting disk 2 are fixed by bolts, thereby making the cone pressure block 51 and the connecting disk 2 not only firmly fixed, but also easy to disassemble.

[0030] Reference Figure 1 and Figure 3 In the process of pulling the fixing block 1 to compress the disc spring 7 and drive the pull rod 9 to move, the rod pull head 8, under the action of the pull rod 9, causes the expansion positioning pin 6 to be sleeved on the periphery of the positioning cone 5, so that the diameter of the expansion positioning pin 6 becomes larger and is clamped with the wheel spoke. The setting of the disc spring 7 makes the various parts of the expansion positioning pin 6 bear force evenly, and reduces the impact of the rod pull head 8 on the expansion positioning pin 6 when the pull rod 9 is pulled. The setting of the washer 32 increases the contact area with the mounting nut 31, disperses the pressure of the disc spring 7 on the surface of the mounting nut 31, and keeps the mounting nut 31 in a balanced state, thereby improving the tightening force of the mounting nut 31. Since the surface of the expansion positioning pin 6 has a gap groove, glass glue is applied in the gap groove on the surface of the expansion positioning pin 6 when the fixture is assembled to prevent iron filings from remaining in the gap groove during the turning process of the wheel spoke.

[0031] Reference Figure 7 and Figure 8The spoke turning fixture is installed on a lathe. In order to enable the lathe equipment to pull the fixed block 1, a fixing hole 11 is opened in the middle position of the surface of the fixed block 1, a pull rod 9 is passed through the fixing hole 11 of the fixed block 1, and a fixing nut 91 is screwed on the end of the pull rod 9 close to the connecting plate 2, so that the fixed block 1 can be pulled through the pull rod 9 of the lathe equipment; in order to facilitate the disassembly and installation between the pull rod 9 and the fixed block 1, a through hole 22 is opened at the center position of the connecting plate 2, so that the position of the through hole 22 corresponds to the position of the fixing hole 11, and a through hole 22 is opened along the circumference of the through hole 22. The installation groove 23 is provided with a pull rod plate 24 in the installation groove 23. The pull rod plate 24 and the connecting plate 2 are fixed by bolts, which not only fixes them firmly but also has the advantage of convenient disassembly. When installing and connecting the pull rod 9 and the fixed block 1, the pull rod plate 24 is removed from the installation groove 23 of the connecting plate 2, so that the wrench can pass through the through hole 22 to facilitate the tightening of the fixing nut 91; after the pull rod 9 is inserted into the fixing hole 11 and installed, the pull rod plate 24 is covered in the installation groove 23 and fixed to prevent iron chips from entering from the through hole 22 when the spokes are turned.

[0032] In order to keep the fixing block 1 parallel to the pull rod 9 during the process of pulling the fixing block 1, a fixing groove 12 is opened along the circumferential side of the fixing hole 11. After the pull rod 9 is inserted into the fixing hole 11, a metal conical washer 92 is sleeved on the outer periphery of the pull rod 9 so that the metal conical washer 92 is embedded in the fixing groove 12. The fixing nut 91 at one end of the pull rod 9 is screwed until it abuts against the metal conical washer 92. The setting of the metal conical washer 92 allows the pull rod 9 and the fixing block 1 to swing at a certain angle. When the pull rod 9 is not pulled parallel to the fixing block 1, the tilt angle can be compensated so that the bottom surface of the spoke can remain parallel to the connecting plate 2 and the fixing block 1 after installation.

[0033] The specific implementation principle of the embodiment of the present application is: when the clamp is used to fix the spokes and the spokes need to be turned to have a center hole, outer diameter, end face and chamfer, the pull rod disk 24 is removed from the connecting disk 2, and one end of the pull rod 9 is inserted into the fixing hole 11 from the bottom end of the fixing block 1, and a metal conical washer 92 is sleeved on the outer periphery of the pull rod 9 so that the metal conical washer 92 is embedded in the fixing block 1, and a fixing nut 91 is screwed onto the pull rod 9 and tightly pressed against the metal conical washer 92, and the fixing block 1 is driven to move by pulling the pull rod 9; finally, the pull rod disk 24 is reinstalled into the mounting groove 23 of the connecting disk 2 to prevent iron filings generated by the upcoming processing from entering the through hole 22.

[0034] When installing the spoke on the fixture, select the positioning cone 5 corresponding to the spoke screw hole model and install it on the fixed block 1, select the expansion positioning pin 6 corresponding to the spoke model and set it on the periphery of the positioning cone 5, and the pull rod 9 passes through the fixed block 1, the cushion block 4, the connecting plate 2 and the positioning cone 5 in sequence and is fixed to the car rod pull head 8. The pull rod 9 of the equipment pulls the fixed block 1 to compress the disc spring 7 to drive the pull rod 9 to move, and the pull rod 9 pulls the car rod pull head 8 to make the expansion positioning pin 6 larger in diameter under the action of the positioning cone 5, so that the expansion positioning pin 6 and the spoke are clamped. The expandable positioning pin in the screw hole is used in the fixture to position and clamp the spoke, so that the position of the spoke can be guaranteed to be within 0.3mm after turning, which ensures the accurate position of the screw hole and the center hole of the spoke, and is easy to use.

[0035] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A clamp for spoke turning, characterized in that: It includes a connecting plate, a fixing block and a vertical lathe rod, wherein the connecting plate is located above the fixing block, a positioning cone is fixedly arranged on the connecting plate, the vertical lathe rod passes through the positioning cone, the connecting plate and the fixing block in sequence, and the vertical lathe rod is slidably connected with the positioning cone, the connecting plate and the fixing block respectively; A mounting nut is provided at one end of the vertical lathe rod, and an expansion positioning pin is provided on the outer sleeve of the positioning cone. The other end of the vertical lathe rod is fixedly provided with a lathe rod pull head, which abuts against the expansion positioning pin. The fixing block is pulled so that the vertical lathe rod drives the lathe rod pull head and the expansion positioning pin to move in the direction close to the positioning cone. The diameter of the expansion positioning pin increases under the action of the positioning cone so that it is clamped with the wheel spoke.

2. A spoke turning fixture according to claim 1, characterized in that: A disc spring is sleeved on the outer periphery of the vertical lathe rod, and two ends of the disc spring are respectively in contact with a fixing block and a mounting nut.

3. A spoke turning fixture according to claim 2, characterized in that: A washer is sleeved on the periphery of the vertical lathe rod, and two sides of the washer are respectively in contact with the disc spring and the mounting nut.

4. A spoke turning fixture according to claim 1, characterized in that: A cushion block is arranged between the fixing block and the connecting plate, and the vertical lathe rod passes through the cushion block.

5. A spoke turning fixture according to claim 1, characterized in that: A positioning groove is provided on the surface of the connection disk, the positioning cone is embedded in the positioning groove, a cone pressing block is sleeved on the periphery of the positioning cone, and the cone pressing block is fixed to the connection disk by bolts.

6. A spoke turning fixture according to claim 1, characterized in that: An end of the vertical lathe rod close to the lathe rod pull head is provided with a mounting screw hole, and a mounting hole is provided on the surface of the lathe rod pull head. The lathe rod pull head is locked and fixed to the vertical lathe rod by mounting bolts.

7. A spoke turning fixture according to claim 1, characterized in that: A fixing hole is provided on the surface of the fixing block, and a fixing groove is provided along the circumference of the fixing hole. A pull rod is passed through the fixing hole, and a fixing nut is screwed onto one end of the pull rod close to the connecting plate. A metal conical washer is sleeved on the outer periphery of the pull rod. The metal conical washer is located in the fixing groove, and its two sides are respectively in contact with the fixing block and the fixing nut.

8. A spoke turning fixture according to claim 7, characterized in that: A through hole is provided on the surface of the connecting disk, and the position of the through hole corresponds to the fixing hole. A mounting groove is provided along the circumference of the through hole. A pull rod disk is provided inside the mounting groove, and the pull rod disk is fixed to the connecting disk by bolt locking.

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