Universal self-centering hub clamp

Abstract

The utility model relates to the technical field of hub machining, and discloses a universal self-centering hub clamp which comprises a disc body, a radial positioning structure is arranged on the disc body corresponding to a hub, the radial positioning structure comprises a plurality of positioning sliding seats which are in radial sliding connection with the disc body, and the positioning sliding seats are distributed on the disc body in a center array mode. A transmission block corresponding to the positioning sliding seat is arranged on the disc body, the transmission block is axially connected with the disc body in a sliding mode, an inclined sliding groove is formed in the transmission block, a wedge-shaped sliding block corresponding to the inclined sliding groove is arranged on the positioning sliding seat, the wedge-shaped sliding block is matched with the inclined sliding groove in a sliding mode, and the transmission block is connected with a first telescopic oil cylinder. The outer edge of the hub is clamped in the radial direction through the positioning sliding seats synchronously acting in the radial direction, self-centering clamping of the hub is achieved, the operation that a traditional clamp is used for repeatedly correcting the hub frequently is omitted, and the hub clamping rate and the positioning precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub processing, in particular to a universal self-centering wheel hub clamp. Background Art

[0002] Aluminum alloy wheels require a variety of clamps for clamping during the production process to facilitate processing and ensure the processing accuracy of the wheels. Currently, during the first-order machining and clamping of the wheels, the traditional clamp is a single telescopic cylinder adjustable structure, which has the advantages of simple structure and easy maintenance. However, in actual production, the traditional clamp does not have an automatic centering function, and the operator needs to frequently correct the wheel during the clamping process. The operation is cumbersome, and there are obvious defects such as poor positioning accuracy, poor balance and runout of the processed product, and low efficiency in changing the wheel type, which seriously affects the production progress and product processing accuracy.

[0003] Based on this, developing a universal self-centering wheel hub fixture for application in actual production to improve the defects of poor positioning accuracy and low clamping efficiency of traditional fixtures is an urgent problem to be solved. Utility Model Content

[0004] The utility model aims to provide a universal self-centering hub clamp to solve the problems of poor positioning accuracy, complicated operation and low clamping efficiency of traditional clamps in view of the above problems.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A universal self-centering wheel hub clamp comprises a disc body, a radial positioning structure is arranged on the disc body corresponding to the wheel hub, the radial positioning structure comprises a plurality of positioning slides radially slidably connected to the disc body, the positioning slide center array is arranged on the disc body, a transmission block is arranged on the disc body corresponding to the positioning slide, the transmission block is axially slidably connected to the disc body, an inclined slide groove is provided on the transmission block, a wedge-shaped slider is arranged on the positioning slide corresponding to the inclined slide groove, the wedge-shaped slider is slidably matched with the inclined slide groove, and the transmission block is connected to a first telescopic cylinder.

[0007] Preferably, the inclined slide groove and the wedge-shaped slider adopt a dovetail matching structure or a T-shaped matching structure.

[0008] Preferably, a clamping boss is provided on the positioning slide corresponding to the outer edge of the hub, a locking hole is provided on the clamping boss, and a plurality of positioning holes are provided on the positioning slide corresponding to the locking hole.

[0009] Preferably, a close-tooth structure is correspondingly provided on the contact surface between the positioning slide and the clamping boss, and the positioning slide and the clamping boss are engaged and connected via the close-tooth structure.

[0010] Preferably, the positioning slide is radially slidably connected to the disc body via a guide pressing block, and a guide ridge is provided on the positioning slide corresponding to the guide pressing block, and the guide ridge is slidably matched with the guide pressing block.

[0011] Preferably, the disc body is provided with a claw arm for axially pressing and fixing the wheel hub, a claw head is provided at the front end of the claw arm corresponding to the wheel lip position of the wheel hub, a guide slide hole for sliding connection to the disc body is opened on the claw arm, a pin shaft for fixing the disc body passes through the guide slide hole and slidably cooperates with it, the tail end of the claw arm is hinged to the tensioning disc, and the tensioning disc is connected to the second telescopic cylinder.

[0012] Preferably, the claw arms are configured with multiple sets corresponding to wheel hubs of different specifications and sizes, and the claw heads and claw arms are detachably connected via bolt holes to adapt to different wheel hubs for clamping.

[0013] Preferably, an axial positioning block is provided on the disc body corresponding to the lower edge of the hub, and the position of the axial positioning block in the diameter direction of the disc body is adjustable.

[0014] The beneficial effect of the utility model is that the utility model radially clamps the outer edge of the hub by a positioning slide with synchronous radial action, thereby realizing self-centering clamping of the hub, eliminating the operation of frequently and repeatedly correcting the hub using traditional clamps, and improving the hub installation rate and positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the planar structure of the utility model.

[0018] Figure 3 This is a diagram of the radial positioning structure in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the claw arm in the utility model.

[0020] In the figure: 1--disc body; 11--guide pressure block; 2--positioning slide; 21--transmission block; 22--inclined slide groove; 23--wedge-shaped slide block; 24--first telescopic oil cylinder; 25--clamping boss; 26--locking hole; 27--positioning hole; 28--close-tooth structure; 29--guide ridge; 3--claw arm; 31--claw head; 32--guide slide hole; 33--pin shaft; 34--tensioning disk; 35--second telescopic oil cylinder; 36--axial positioning block 36; 37--bolt hole 37. 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 1-4 As shown, a universal self-centering hub clamp includes a disc body 1, and a radial positioning structure is provided on the disc body 1 corresponding to the hub, and the radial positioning structure includes a plurality of positioning slides 2 radially slidably connected to the disc body 1, and the positioning slides 2 are arranged in a central array on the disc body 1 for radial positioning of the hub. Specifically, a transmission block 21 is provided on the disc body 1 corresponding to the positioning slide 2, and the transmission block 21 is axially slidably connected to the disc body 1, and an inclined slide groove 22 is provided on the transmission block 21, and a wedge-shaped slider 23 is provided on the positioning slide 2 corresponding to the inclined slide groove 22, and the wedge-shaped slider 23 is slidably matched with the inclined slide groove 22. The transmission block 21 is connected to the first telescopic oil cylinder 24, and the transmission block 21 is driven to make axial reciprocating motion on the disk body 1 through the telescopic action of the first telescopic oil cylinder 24, and the positioning slide 2 is formed to reciprocate upward on the disk body 1 through the sliding cooperation between the inclined slide on the transmission block 21 and the wedge-shaped slide 23, and a plurality of positioning slides 2 move synchronously to form a positioning clamping or loosening action for the wheel hub. Preferably, the inclined slide 22 and the wedge-shaped slide 23 adopt a dovetail matching structure or a T-shaped matching structure, so that the wedge-shaped slide 23 can move with the inclined slide 22 to prevent the positioning slide 2 from separating from the transmission block 23.

[0023] This embodiment radially clamps the outer edge of the hub by means of the synchronous radially moving positioning slide 2, thereby achieving self-centering clamping of the hub, eliminating the need for frequent and repeated corrections of the hub using traditional clamps, and improving the hub clamping rate and positioning accuracy.

[0024] As a preferred embodiment, Figure 1-2 As shown, a clamping boss 25 is provided on the outer edge of the positioning slide 2 corresponding to the wheel hub, which is used for the secure clamping of the wheel hub. Furthermore, the clamping boss 25 is connected to the positioning slide 2 in an adjustable position, so as to facilitate the positioning and clamping of wheel hubs of different sizes. Specifically, a locking hole 26 is provided on the clamping boss 25, and a plurality of positioning holes 27 are provided on the positioning slide 2 corresponding to the locking hole 26. The fastening bolts pass through the locking holes 26 on the clamping boss 25 and are connected to different positioning holes 27 on the positioning slide 2, so that wheel hubs of different specifications and sizes can be adapted to complete the clamping, thereby improving the scope of application of the utility model, making it have a certain degree of versatility, and reducing the manufacturing cost of the tooling fixture.

[0025] Furthermore, if Figure 3As shown, the contact surfaces of the positioning slide 2 and the clamping boss 25 are correspondingly provided with a dense tooth structure 28, and the positioning slide 2 and the clamping boss 25 are engaged and connected through the dense tooth structure 28 to avoid radial movement between the two and affect the positioning accuracy.

[0026] Furthermore, if Figure 1 As shown, the positioning slide 2 is radially slidably connected to the disk body 1 through the guide pressing block 11. Specifically, a guide rib 29 is provided on the positioning slide 2 corresponding to the guide pressing block 11, and the guide rib 29 is slidably matched with the guide pressing block 11.

[0027] As a preferred embodiment, Figure 2 , 4 As shown, the disc body 1 is provided with a claw arm 3 for axially pressing and fixing the wheel hub, and a claw head 31 is provided at the front end of the claw arm 3 corresponding to the wheel lip position of the wheel hub for clamping the wheel lip. The claw arm 3 is provided with a guide sliding hole 32 for sliding connection with the disc body 1, and a pin shaft 33 for fixed connection with the disc body 1 passes through the guide sliding hole 32 and slides with it. The tail end of the claw arm 3 is hinged to a tensioning plate 34, and the tensioning plate 34 is connected to a second telescopic oil cylinder 35. When in use, after the wheel hub is positioned by the positioning slide 2, the second telescopic oil cylinder 35 retracts to drive the tensioning plate 34 and the claw arm 3 to move backward synchronously, and the guide sliding hole 32 of the claw arm 3 moves in a predetermined direction under the guiding limit of the pin shaft 33, so that the claw head 31 is pressed against the wheel lip part of the wheel hub, completing the axial pressing and positioning of the wheel hub.

[0028] Furthermore, the claw arm 3 is configured with multiple sets corresponding to wheel hubs of different specifications and sizes, and the axial compression and positioning of wheel hubs of different specifications can be satisfied by adjusting the length, angle and specific shape of the claw head 31 and the guide slot. Furthermore, the claw head 31 and the claw arm 3 are detachably connected through the bolt hole 37, which is convenient for replacing the corresponding claw head 31 for wheel hubs of different models and sizes, so as to adapt to different wheel hubs for clamping, further improving the convenience of use and ensuring the working efficiency.

[0029] Furthermore, if Figure 1 As shown, an axial positioning block 36 is provided on the disk body 1 corresponding to the lower edge of the hub for axial positioning of the hub. During clamping, the lower edge of the hub is supported on the circumferentially evenly distributed axial positioning blocks 36 to complete the axial height positioning of the hub, thereby avoiding the situation where the lower edge of the hub contacts the disk body 1 completely and over-positioning occurs, thereby improving the positioning accuracy. Furthermore, the position of the axial positioning block 36 in the diameter direction of the disk body 1 is adjustable to meet the clamping requirements of hubs of different specifications and sizes. Furthermore, a dense tooth structure 28 is provided corresponding to the contact surface between the axial positioning block 36 and the disk body 1, so that the two are engaged with each other and positioned through the dense tooth structure 28, thereby eliminating radial movement and ensuring the stability of the connection.

[0030] 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 self-centering hub clamp, characterized in that: The invention comprises a disc body (1), wherein a radial positioning structure is arranged on the disc body (1) corresponding to a wheel hub, wherein the radial positioning structure comprises a plurality of positioning slides (2) radially slidably connected to the disc body (1), wherein the positioning slides (2) are arranged in a central array on the disc body (1), wherein a transmission block (21) is arranged on the disc body (1) corresponding to the positioning slides (2), wherein the transmission block (21) is axially slidably connected to the disc body (1), wherein an inclined slide groove (22) is provided on the transmission block (21), wherein a wedge-shaped slide block (23) is arranged on the positioning slide seat (2) corresponding to the inclined slide groove (22), wherein the wedge-shaped slide block (23) is slidably matched with the inclined slide groove (22), and wherein the transmission block (21) is connected to a first telescopic oil cylinder (24).

2. A universal self-centering hub clamp according to claim 1, characterized in that: The inclined slide groove (22) and the wedge-shaped slide block (23) adopt a dovetail matching structure or a T-shaped matching structure.

3. A universal self-centering hub clamp according to claim 1, characterized in that: A clamping boss (25) is provided on the positioning slide (2) corresponding to the outer edge of the wheel hub, a locking hole (26) is provided on the clamping boss (25), and a plurality of positioning holes (27) are provided on the positioning slide (2) corresponding to the locking hole (26).

4. A universal self-centering hub clamp according to claim 3, characterized in that: A dense tooth structure (28) is provided corresponding to the contact surface between the positioning slide (2) and the clamping boss (25), and the positioning slide (2) and the clamping boss (25) are engaged and connected via the dense tooth structure (28).

5. The universal self-centering hub clamp according to claim 1, characterized in that: The positioning slide (2) is radially slidably connected to the disk body (1) via a guide pressure block (11); a guide ridge (29) is provided on the positioning slide (2) corresponding to the guide pressure block (11); the guide ridge (29) is slidably matched with the guide pressure block (11).

6. A universal self-centering hub clamp according to claim 1, characterized in that: The disc body (1) is provided with a claw arm (3) for axially pressing and fixing the wheel hub, a claw head (31) is provided at the front end of the claw arm (3) at a position corresponding to the wheel lip of the wheel hub, a guide sliding hole (32) for slidably connecting the disc body (1) is opened on the claw arm (3), a pin shaft (33) for fixedly connecting the disc body (1) passes through the guide sliding hole (32) and slidably cooperates with the guide sliding hole (32), and the rear end of the claw arm (3) is hingedly connected to a tension disc (34), and the tension disc (34) is connected to a second telescopic oil cylinder (35).

7. A universal self-centering hub clamp according to claim 6, characterized in that: The claw arms (3) are configured in multiple sets corresponding to wheel hubs of different specifications and sizes, and the claw heads (31) are detachably connected to the claw arms (3) via bolt holes (37) to adapt to different wheel hubs for clamping.

8. The universal self-centering hub clamp according to claim 1, characterized in that: An axial positioning block (36) is provided on the disc body (1) corresponding to the lower edge of the hub, and the position of the axial positioning block (36) in the diameter direction of the disc body (1) is adjustable.

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