Universal hub milling, clamping and positioning device

Abstract

The utility model relates to the technical field of hub machining, and discloses a universal hub milling, clamping and positioning device which comprises a base, a positioning seat is fixedly arranged on the base, a plurality of guide grooves are formed in the positioning seat in a circumferential array mode, positioning sliding blocks are slidably connected in the guide grooves in the radial direction, and the outer sides of the positioning sliding blocks correspond to the inner diameter of a hub center hole. A conical surface structure is arranged on the inner side of the positioning sliding block, and a tensioning taper sleeve with the same taper is in axial sliding fit with the conical surface structure. According to the utility model, the fit clearance between the positioning mandrel and the central hole of the hub in a transmission positioning mode is eliminated, and the positioning precision is improved; meanwhile, the positioning sliding block is tensioned in the center hole of the hub, so that the clamping firmness of the hub is improved, and the operation safety is ensured; in addition, the positioning sliding blocks arranged in a radial expansion mode can be matched with positioning clamping of wheel types with different center hole diameters, the applicability of the positioning device is improved, the positioning requirement of the radial angle of the hub is met at the same time, and the positioning precision is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub processing, in particular to a universal wheel hub milling clamping and positioning device. Background Art

[0002] With the development of the automotive industry, the market has more and more demands for the diversified appearance of forged wheels. Forged wheels have transitioned from the original single round shape to complex curved surface shapes. For the production of complex curved surface wheels, relying solely on forging technology can no longer meet the molding of all shapes, and some wheel shapes need to be completed through milling technology. During production, the basic shape of the wheel is forged using the forging process, and then the complex shape is milled. During the milling process, the positioning and clamping accuracy and reliability of the wheel are directly related to the processing accuracy and operation safety of the finished product.

[0003] At present, wheel hub milling processing mostly uses traditional clamping tools for positioning and clamping, which has low positioning accuracy and is prone to causing positioning deviation of the wheel hub, resulting in differences in processing shape, and even some products are scrapped due to lack of processing. At the same time, the existing clamping tools with positioning mandrels have poor versatility. For wheels with different center hole diameters, special clamping tools need to be made separately, resulting in high tooling production costs and difficulty in on-site tooling fixture management.

[0004] Based on this, developing a hub milling processing clamping and positioning device to ensure the hub positioning accuracy and improve the milling processing yield is a problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a universal wheel hub milling clamping and positioning device to solve the existing problems and solve the existing problems at the same time.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A universal wheel hub milling clamping and positioning device comprises a base for connecting to a machine tool processing platform, a positioning seat is fixedly arranged on the base, a plurality of guide grooves are arranged in a circumferential array on the positioning seat, a positioning slider is radially slidably connected in the guide groove, the outer side of the positioning slider is arranged corresponding to the inner diameter of the wheel hub center hole, the inner side of the positioning slider has a conical surface structure, and a tightening cone sleeve with the same taper is axially slidably fitted on the conical surface structure.

[0008] Preferably, a connecting hole for inserting a clamping bolt is provided at the bottom of the tensioning cone sleeve, and a threaded hole is provided on the positioning seat corresponding to the connecting hole, and the clamping bolt passes through the connecting hole and is screwed into the threaded hole.

[0009] Preferably, the positioning device also includes a positioning insert for radial angle positioning of the wheel hub, a positioning column is provided on the base corresponding to the window portion of the wheel hub, a positioning countersunk hole is provided at the top of the positioning column, a positioning pin is provided at the bottom end of the positioning insert corresponding to the positioning countersunk hole, the positioning pin is plugged into the positioning countersunk hole, and the outer contour of the positioning insert is manufactured to correspond to the shape of the wheel hub window.

[0010] Preferably, a strong magnet is provided at the bottom end of the positioning column, and the positioning column is detachably connected to the base via the strong magnet.

[0011] Preferably, a pressure plate is provided on the base corresponding to the wheel lip of the hub for positioning and clamping the hub, and a fixing hole for fixing the pressure plate is provided on the base, and the pressure plate is connected to the fixing hole by a fastening bolt.

[0012] Preferably, a plurality of fixing holes are provided at intervals along the radial direction of the hub to meet the clamping requirements of wheels of different sizes.

[0013] Preferably, three support blocks for supporting the wheel hub are arranged on the base, and the support blocks are arranged at equal intervals in the circumferential direction corresponding to the wheel lip of the wheel hub.

[0014] Preferably, the fixing hole is opened on the support block, and the pressing plate is connected to the support block by fastening bolts.

[0015] The beneficial effects of the utility model are:

[0016] The positioning slider in the utility model is slidably connected to the positioning seat and cooperates with the conical surface of the tensioning cone sleeve through the conical surface structure to realize the tensioning positioning of the positioning slider on the center hole of the wheel hub. The positioning slider with radial preload eliminates the matching clearance between the positioning core shaft and the center hole of the wheel hub in the transmission positioning mode, thereby improving the positioning accuracy; at the same time, the positioning slider tightened in the center hole of the wheel hub increases the reliability of the wheel hub installation and ensures operation safety; in addition, the positioning slider with radial expansion and contraction arrangement can adapt to the positioning installation of wheels with different center hole diameters, thereby improving the applicability of the positioning device and the setting of the positioning insert, while meeting the positioning requirements of the radial angle of the wheel hub and further improving the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] In the figure: 1--base; 2--positioning seat; 21--threaded hole; 22--fixing hole; 3--positioning slide block; 31--conical surface structure; 4--tensioning cone sleeve; 41--connecting hole; 5--positioning insert; 51--positioning pin; 6--positioning column; 61--positioning countersunk hole; 62--strong magnet; 7--pressure plate; 8--support block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figure 1-2 As shown, a universal wheel hub milling clamping and positioning device comprises a base 1 for connecting to a machine tool processing platform, a positioning seat 2 is fixedly arranged on the base 1, and a positioning slider 3 is arranged on the positioning seat 2 corresponding to the center hole of the wheel hub for center positioning of the wheel hub. Specifically, a plurality of guide grooves are provided in a circumferential array on the positioning seat 2, and the positioning slider 3 is radially slidably connected in the guide groove. The outer side of the positioning slider 3 is arranged corresponding to the inner diameter of the center hole of the wheel hub, and the inner side of the positioning slider 3 has a conical surface structure 31, and the conical surface structure 31 is axially slidably matched with a tensioning cone sleeve 4 of the same taper. During clamping, by adjusting the tensioning cone sleeve 4 to move downward and squeezing the conical surface structure 31 of the slider, the circumferentially arranged positioning sliders 3 slide outward along their respective guide grooves at the same time, and finally press against the inner diameter of the center hole of the wheel hub to complete the center positioning of the wheel hub.

[0023] In this embodiment, the positioning slider 3 slidably connected to the positioning seat 2 realizes the tightening and positioning of the positioning slider 3 on the center hole of the hub through the conical surface structure 31 and the conical surface of the tightening cone sleeve 4. The positioning slider 3 with radial preload eliminates the matching clearance between the positioning mandrel and the center hole of the hub in the transmission positioning method, and improves the positioning accuracy. At the same time, the positioning slider 3 tightened in the center hole of the hub increases the reliability of the hub clamping and ensures the safety of the operation. In addition, the positioning slider 3 with radial expansion and contraction setting can adapt to the positioning and clamping of wheels with different center hole diameters, which improves the applicability of the positioning device.

[0024] Preferably, a connecting hole 41 for inserting a clamping bolt is provided at the bottom of the tensioning cone sleeve 4, and a threaded hole 21 is provided on the positioning seat 2 corresponding to the connecting hole 41. The clamping bolt passes through the connecting hole 41 and is screwed into the threaded hole 21, thereby pressing the tensioning cone sleeve 4 onto the conical surface structure 31 of the positioning slider 3 to realize the center positioning and clamping of the wheel hub.

[0025] Preferably, the positioning device further comprises a positioning insert 5 provided at a position corresponding to the hub window, for positioning the hub radial angle. Specifically, a positioning column 6 is provided at a position corresponding to the hub window on the base 1, a positioning countersunk hole 61 is provided at the top of the positioning column 6, a positioning pin 51 is provided at the bottom of the positioning insert 5 corresponding to the positioning countersunk hole 61, and the positioning pin 51 is plugged and matched with the positioning countersunk hole 61. The outer contour of the positioning insert 5 is made according to the shape of the hub window.

[0026] When positioning, the wheel hub is pre-tightened by the positioning slider 3, while maintaining a certain radial rotational freedom of the wheel hub. The positioning column 6 is fixed in the appropriate position of the base 1 in advance, and the wheel hub is radially rotated to align the wheel hub window with the positioning column 6. Then the positioning insert 5 is inserted into the wheel hub window and the radial angle of the wheel hub is adjusted. When the positioning pin 51 at the bottom of the positioning insert 5 is inserted into the positioning countersunk hole 61 at the top of the positioning column 6, it indicates that the radial angle of the wheel hub meets the requirements. At this time, the positioning slider 3 can be adjusted to be fully tightened to complete the center and radial angle positioning of the wheel hub. Finally, the positioning insert 5 is removed and the wheel hub milling process can be performed.

[0027] Preferably, a strong magnet 62 is provided at the bottom end of the positioning column 6, and the positioning column 6 is detachably connected to the base 1 through the strong magnet 62. This embodiment facilitates the position adjustment of the positioning column 6. When locating and positioning the wheel hub of different wheel types, the operator can quickly complete the repositioning of the positioning column 6 through the strong magnet 62 to quickly adapt to the positioning and locating of different wheel types, thereby improving the working efficiency.

[0028] Preferably, a pressure plate 7 is provided on the base 1 corresponding to the wheel lip of the hub for positioning and clamping the hub. Specifically, a fixing hole 22 for fixing the pressure plate 7 is provided on the base 1, and the pressure plate 7 is connected to the fixing hole 22 by a fastening bolt.

[0029] Furthermore, the fixing holes 22 are provided at intervals along the radial direction of the hub to meet the clamping requirements of wheels of different sizes. This embodiment further improves the applicability of the positioning device. When processing different wheel types, there is no need to separately make dedicated positioning tooling, which saves tooling production costs and reduces the difficulty of managing tooling fixtures at the production site.

[0030] Furthermore, if Figure 1 As shown, the base 1 is provided with three support blocks 8 for supporting the wheel hub, and the support blocks 8 are arranged at equal intervals in the circumferential direction corresponding to the wheel lip of the wheel hub. This embodiment improves the over-positioning caused by the lower wheel lip of the wheel hub directly contacting the upper end surface of the base 1 as a whole, and ensures the axial positioning accuracy. In this embodiment, the fixing hole 22 is opened on the support block 8, and the pressure plate 7 is connected to the support block 8 by fastening bolts.

[0031] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, any deformation made should be regarded as belonging to the protection of the present invention.

Claims

1. A universal wheel hub milling clamping and positioning device, characterized in that: The invention comprises a base (1) for connecting to a machine tool processing platform, a positioning seat (2) being fixedly arranged on the base (1), a plurality of guide grooves being arranged in a circumferential array on the positioning seat (2), a positioning slide block (3) being radially slidably connected in the guide groove, the outer side of the positioning slide block (3) being arranged corresponding to the inner diameter of the hub center hole, the inner side of the positioning slide block (3) having a conical surface structure (31), and a tensioning cone sleeve (4) having the same taper being axially slidably matched on the conical surface structure (31).

2. A universal wheel hub milling clamping and positioning device according to claim 1, characterized in that: The bottom of the tension cone sleeve (4) is provided with a connection hole (41) for inserting a clamping bolt, and the positioning seat (2) is provided with a threaded hole (21) corresponding to the connection hole (41), and the clamping bolt penetrates the connection hole (41) and is screwed into the threaded hole (21).

3. A universal wheel hub milling clamping and positioning device according to claim 1, characterized in that: The positioning device further comprises a positioning insert (5) for radial angular positioning of the wheel hub; a positioning column (6) is provided on the base (1) at a position corresponding to the window of the wheel hub; a positioning countersunk hole (61) is provided at the top of the positioning column (6); a positioning pin (51) is provided at the bottom of the positioning insert (5) corresponding to the positioning countersunk hole (61); the positioning pin (51) is plug-fitted with the positioning countersunk hole (61); and the outer contour of the positioning insert (5) is manufactured in accordance with the shape of the wheel hub window.

4. A universal wheel hub milling clamping and positioning device according to claim 3, characterized in that: A strong magnet (62) is provided at the bottom end of the positioning column (6), and the positioning column (6) is detachably connected to the base (1) via the strong magnet (62).

5. The universal wheel hub milling clamping and positioning device according to claim 1, characterized in that: A pressure plate (7) is provided on the base (1) at the wheel lip corresponding to the wheel hub for positioning and pressing the wheel hub. A fixing hole (22) for fixing the pressure plate (7) is provided on the base (1). The pressure plate (7) is connected to the fixing hole (22) by a fastening bolt.

6. A universal wheel hub milling clamping and positioning device according to claim 5, characterized in that: A plurality of fixing holes (22) are provided at intervals along the radial direction of the hub to meet the clamping requirements of wheels of different sizes.

7. A universal wheel hub milling clamping and positioning device according to claim 6, characterized in that: Three support blocks (8) for supporting the wheel hub are arranged on the base (1), and the support blocks (8) are arranged at equal intervals in the circumferential direction corresponding to the wheel lip of the wheel hub.

8. A universal wheel hub milling clamping and positioning device according to claim 7, characterized in that: The fixing hole (22) is formed on the support block (8), and the pressing plate (7) is connected to the support block (8) by means of fastening bolts.

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