CN115255983A

CN115255983A - Fixture for machining automobile hub

Info

Publication number: CN115255983A
Application number: CN202210843513.3A
Authority: CN
Inventors: 杨建�; 袁良新
Original assignee: Ningbo Mingde Machinery Automation Co ltd
Current assignee: Hangzhou Banglei Auto Parts Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-01
Anticipated expiration: 2042-07-18
Also published as: CN115255983B

Abstract

The invention belongs to the technical field of automobile hub machining, and particularly relates to a fixture for machining an automobile hub. The wheel hub clamping device can synchronously move in multiple directions to clamp the wheel hub, and the clamping force of each clamping block on the wheel hub is kept to be the same; the elastic pin is matched with the placing groove to check whether the hub is stably placed on the contact surface, and the air outlet hole is matched with the air inlet hole to check whether the clamping block clamps the hub, so that the hub is prevented from being machined when not clamped, and the hub is prevented from being displaced during machining; through first arcwall face and the second arcwall face on the convex part, step up the outside and the inboard of wheel hub to in the wheel hub surface process.

Description

Fixture for machining automobile hub

Technical Field

The invention belongs to the technical field of automobile hub machining, and particularly relates to a clamp for machining an automobile hub.

Background

The hub is a metal part that supports the center of the tire and is mounted on an axle. In order to meet the precision requirements of the product, it is usually necessary to separately machine the inside and outside surfaces of the hub. When the hub is machined, the hub needs to be fastened and fixed through a clamp.

The existing clamp for machining the automobile hub is low in clamping precision and cannot move synchronously, so that multiple directions of the hub are simultaneously contacted for clamping, clamping force of each clamping block on the hub is different easily, the hub is easy to displace during machining, and the machining effect is influenced.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a clamp for machining an automobile hub, which can synchronously move in multiple directions to clamp the hub and keep the clamping force of each clamping block on the hub the same.

The purpose of the invention can be realized by the following technical scheme: the utility model provides an automobile wheel hub is anchor clamps for processing, includes the bottom plate, the bottom plate upside is equipped with the processing platform, be equipped with the through-hole in the middle of processing platform and the bottom plate, processing bench is equipped with a plurality of clamp splices that are annular interval distribution, the clamp splice is at the up end of processing platform along the radial slip of through-hole, through the inclined plane cooperation between a plurality of clamp splices and the same movable ring, the movable ring is connected with sharp actuating mechanism's output, sharp actuating mechanism drives the movable ring and reciprocates and can drive a plurality of clamp splices radial inwards or outwards removal in step through the inclined plane.

The number of the linear driving mechanisms is four, and the four linear driving mechanisms are synchronously started to drive the movable ring to stably move up and down, so that the movable ring is prevented from inclining when moving up and down, and the clamping blocks are prevented from being incapable of synchronously moving; the linear driving mechanism drives the movable ring to move up and down, the inclined plane can drive the clamping blocks to synchronously move inwards or outwards in the radial direction, the clamping blocks can synchronously move in multiple directions to clamp the hub, and the clamping force of each clamping block on the hub is kept the same.

Preferably, be equipped with the convex part that upwards extends on the clamp splice, the terminal surface is including being used for with the first arcwall face of the circumference outside chimb complex of wheel hub, the clamp splice upper end face is including the first contact surface that is used for supporting the wheel hub work piece, first contact surface closes on first arcwall face or meets with first arcwall face, be formed with the acute angle between first contact surface and the first arcwall face. Wherein, be formed with the acute angle through between first contact surface and the first arcwall face and be used for pressing from both sides tight the wheel hub outside, prevent that wheel hub from adding the upward movement or displacement man-hour to it is the same to keep each clamp splice to the tight dynamics of wheel hub clamp.

Preferably, one side of the clamping block is provided with a first air inlet, a first air inlet channel is arranged inside the clamping block, at least two first placing grooves which are upwards opened and extend downwards are arranged on the first contact surface, each first placing groove is internally provided with a first elastic pin, the lower side of each first placing groove is communicated with the corresponding first air inlet channel in a gas phase mode through the first air inlet channel, a first air outlet channel is arranged on the side, deviating from the first air inlet channel, of the clamping block, and the first air outlet channel is communicated with the first placing groove in a gas phase mode. Wherein, first elastic pin and first standing groove cooperation are used for the steady placing on first contact surface of inspection wheel hub, and when wheel hub steadily placed on first contact surface, can be impressed a plurality of first elastic pins on the first contact surface in the first standing groove, make first elastic pin lower extreme and the inside lower extreme contact of first standing groove to block up the passageway of first inlet channel and first outlet channel gaseous phase intercommunication, make first outlet channel can not give vent to anger. After the first elastic pin is used for processing the wheel hub, the first elastic pin is pushed upwards by the upward elastic force of the first elastic pin and the gas, the wheel hub is lifted up in an auxiliary mode, and the wheel hub can be taken out conveniently. The outlet of the first air outlet channel is aligned with the upper end face of the processing table, and the upper end face of the processing table is cleaned through air outlet of the first air outlet channel.

Preferably, a plurality of first air outlet holes are formed in the first arc-shaped surface, and the first air outlet holes are communicated with the first air inlet channel in a gas phase manner; the upper end face of the clamping block comprises a non-contact face at the position deviated from the convex part, and the first contact face is higher than the non-contact face to form a step structure. Wherein, first venthole is used for the check clamp splice whether to give vent to anger the clearance to first contact surface after wheel hub presss from both sides tightly and wheel hub processing, whether give vent to anger through first venthole and judge whether the clamp splice presss from both sides tightly wheel hub, and in the air part that first air inlet got into entered into first venthole, first venthole was stopped up by wheel hub completely, and first venthole can not be given vent to anger, explains that the clamp splice presss from both sides tightly to wheel hub. The first contact surface is higher than the non-contact surface to form a step structure, so that the first contact area is reduced, and the processing precision of the clamping block is reduced.

Preferably, be equipped with the convex part that upwards extends on the clamp splice, the outer terminal surface of convex part is including being used for with the inboard chimb complex second arcwall face of wheel hub, the clamp splice upper end face is including the second contact surface that is used for supporting the wheel hub work piece, the second contact surface closes on the second arcwall face or meets with the second arcwall face, be formed with the acute angle between second contact surface and the second arcwall face. Wherein, be formed with the acute angle between second contact surface and the second arcwall face and be used for pressing from both sides tight to the wheel hub is inboard, prevents that upward movement or displacement are add man-hour to keep each clamp splice the same to the tight dynamics of wheel hub clamp.

Preferably, a second air inlet is formed in one side of the clamping block, a second air inlet channel is formed in the clamping block, at least two second placing grooves which are opened upwards and extend downwards are formed in the second contact surface, a second elastic pin is arranged in each second placing groove, the second placing grooves are communicated with the second air inlet holes through a second air inlet channel in a gas phase mode, a second air outlet channel is formed in the side, deviating from the second air inlet channel, of the clamping block, and the second air outlet channel is communicated with the second placing grooves in a gas phase mode; and a plurality of second air outlet holes are formed in the second air outlet holes, and the second air outlet holes are communicated with the second air inlet channel in a gas phase mode. The second elastic pin has the same function as the first elastic pin and is used for checking whether the hub is stably placed on the second contact surface or not and jacking the hub after the hub is machined so as to be convenient for the hub to take out.

Preferably, the lower end of the clamping block is provided with a sliding block, one end of the sliding block is provided with a first guide block which inclines in the vertical direction, the movable ring is provided with a first guide groove which inclines in the vertical direction and corresponds to the first guide block, the contact surface of the first guide block and the first guide groove is the inclined surface, and the first guide block is in sliding fit with the first guide groove. Wherein, the activity ring reciprocates and drives the synchronous inside or outside removal of slider through first guide block and first guide way sliding fit, and a plurality of directions synchronous motion presss from both sides tightly wheel hub.

Preferably, the front end of the sliding block is provided with a second guide block which extends towards the side of the first placing groove and inclines in the vertical direction, a second guide groove which inclines in the vertical direction with the second guide block is arranged in the middle of the first guide groove on the movable ring, the contact surface of the second guide block and the second guide groove is the inclined surface, and the second guide block is in sliding fit with the second guide groove; the width of the horizontal section of the first guide block is smaller than that of the horizontal section of the first guide groove. Wherein, through the further activity ring direction that carries on of second guide block and second guide way sliding fit drive the slider and remove, it is difficult to control cheap, can a plurality of directions synchronous motion press from both sides tight wheel hub. The width of the horizontal section of the first guide block is smaller than that of the horizontal section of the first guide groove, and the contact area of the first guide block and the first guide groove is reduced, so that the friction force between the first guide block and the first guide groove is reduced, and the first guide block is prevented from being clamped with the first guide groove.

Preferably, the slider is formed with two third guide ways that the vertical slope and bilateral symmetry distribute, be equipped with two third guide blocks that the vertical slope and bilateral symmetry distribute that correspond with the third guide way on the activity ring, third guide way and third guide block contact surface are the inclined plane, third guide way and third guide block sliding fit. Wherein, the activity ring further carries out the guide movement effect to the slider through third guide way and third guide block sliding fit, prevents that the distance that each slider removed is different, keeps each clamp splice the same to the tight dynamics of wheel hub clamp.

Preferably, a spring is arranged between the slide block and the processing table, and the clamping block slides on the processing table along the radial direction of the through hole through the slide block. Wherein, the spring is used for the reset action of slider, prevents that the slider card from pausing.

Has the advantages that:

1. through the cooperation of the slide block and the inclined plane of the movable ring, the wheel hub can be clamped through synchronous movement in multiple directions, and the clamping force of each clamping block on the wheel hub is kept to be the same.

2. Whether be used for examining stable placing on the contact surface of wheel hub through the spring pin with the standing groove cooperation, prevent that wheel hub from not having the level to place to lead to the wheel hub processing error to appear.

3. Whether the clamping block clamps the hub or not is checked through the cooperation of the air outlet hole and the air inlet hole, and the hub is prevented from being machined when not clamped, so that the hub machining effect is prevented from being influenced by the displacement during machining.

4. Through first arcwall face and the second arcwall face on the convex part, step up the outside and the inboard of wheel hub to in the wheel hub surface process.

Drawings

The invention is further explained below with reference to the figures and examples:

fig. 1 is a schematic isometric view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 isbase:Sub>A schematic sectional view atbase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 is a schematic view of a portion a of fig. 3.

FIG. 5 is a schematic top view of the slider and the movable ring of the present invention.

Fig. 6 is an isometric view of a movable ring according to the present invention.

FIG. 7 is a schematic axial view of the slider of the present invention.

In the drawing, a bottom plate 10, a processing table 11, a clamping block 12, a linear driving mechanism 13, a movable ring 14, a first guide groove 15, a second guide groove 16, a third guide block 17, a spring 18, a non-contact surface 19, a first contact surface 20, a second contact surface 21, a first elastic pin 22, a second elastic pin 23, a first arc-shaped surface 24, a first air outlet 25, a second arc-shaped surface 26, a second air outlet 27, a first air inlet 28, a second air inlet 29, a first placement groove 30, a first air outlet channel 31, a second placement groove 32, a second air outlet channel 33, a through hole 34, a sliding block 35, a first guide block 36, a second guide block 37, a third guide groove 38, a convex portion 39, a first air inlet channel 40 and a second air inlet channel 41 are arranged.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

With reference to fig. 1-3, an automobile hub machining fixture comprises a bottom plate 10, a machining table 11 is arranged on the upper side of the bottom plate 10, a through hole 34 is formed between the machining table 11 and the bottom plate 10, a plurality of clamping blocks 12 are arranged on the machining table 11 and distributed at intervals in an annular shape, the clamping blocks 12 slide along the radial direction of the through hole 34 on the upper end face of the machining table 11, the clamping blocks 12 are matched with the same movable ring 14 through inclined planes, the movable ring 14 is connected with the output end of a linear driving mechanism 13, and the linear driving mechanism 13 drives the movable ring 14 to move up and down and can drive the clamping blocks 12 to move inwards or outwards in the radial direction synchronously through the inclined planes.

Further, with reference to fig. 1-3, an upwardly extending convex portion 39 is provided on the clamp block 12, an inner end surface of the convex portion 39 includes a first arc-shaped surface 24 for being matched with a circumferential outer convex edge of the hub, an upper end surface of the clamp block 12 includes a first contact surface 20 for supporting the hub workpiece, the first contact surface 20 is adjacent to the first arc-shaped surface 24 or connected with the first arc-shaped surface 24, and an acute angle is formed between the first contact surface 20 and the first arc-shaped surface 24.

Further, referring to fig. 1 to 3, a first air inlet 28 is disposed on one side of the clamp block 12, a first air inlet channel 40 is disposed inside the clamp block 12, at least two first placement grooves 30 which are open upward and extend downward are disposed on the first contact surface 20, a first elastic pin 22 is disposed in each first placement groove 30, the lower side of each first placement groove 30 is in air-phase communication with the first air inlet 28 through the first air inlet channel 40, a first air outlet channel 31 is disposed in the clamp block 12 at a side deviating from the first air inlet channel 40, and the first air outlet channel 31 is in air-phase communication with the first placement grooves 30.

Further, referring to fig. 1-3, a plurality of first air outlets 25 are formed in the first arc-shaped surface 24, and the first air outlets 25 are in gas phase communication with the first air inlet channel 40; the upper end face of the clamping block 12 comprises a non-contact surface 19 at a position offset from the convex part 39, and the first contact surface 20 is higher than the non-contact surface 19 to form a step structure.

Further, with reference to fig. 1, 5, 6, and 7, a sliding block 35 is disposed at the lower end of the clamping block 12, a first guide block 36 inclined in the vertical direction is formed at one end of the sliding block 35, a first guide groove 15 inclined in the vertical direction corresponding to the first guide block 36 is disposed on the movable ring 14, a contact surface between the first guide block 36 and the first guide groove 15 is an inclined surface, and the first guide block 36 is in sliding fit with the first guide groove 15.

Further, referring to fig. 1, 5, 6, and 7, a second guide block 37 extending toward the first placement groove 30 and inclined in the vertical direction is provided at the front end of the slider 35, a second guide groove 16 inclined in the vertical direction with respect to the second guide block 37 is provided in the middle of the first guide groove 15 on the movable ring 14, the contact surface between the second guide block 37 and the second guide groove 16 is an inclined surface, and the second guide block 37 and the second guide groove 16 are slidably engaged; the width of the horizontal section of the first guide block 36 is smaller than the width of the horizontal section of the first guide groove 15.

Further, referring to fig. 1, 5, 6, and 7, the slider 35 is formed with two third guide grooves 38 that are vertically inclined and bilaterally symmetrically distributed, the movable ring 14 is provided with two third guide blocks 17 that are vertically inclined and bilaterally symmetrically distributed corresponding to the third guide grooves 38, a contact surface of the third guide grooves 38 and the third guide blocks 17 is an inclined surface, and the third guide grooves 38 and the third guide blocks 17 are slidably engaged.

Further, referring to fig. 1-2, a spring 18 is disposed between the slider 35 and the processing table 11, and the clamping block 12 slides on the processing table 11 through the slider 35 in the radial direction of the through hole 34.

Principle of operation

Firstly, the four linear driving mechanisms 13 are started simultaneously, the output ends of the linear driving mechanisms 13 move upwards to push the movable ring 14 to move upwards in the processing table 11, the movable ring 14 moves upwards to drive the four sliding blocks 35 to move radially outwards simultaneously in the processing table 11 through the inclined planes of the movable ring 14 matched with the sliding blocks 35, and the four sliding blocks 35 move outwards simultaneously to drive the four clamping blocks 12 to move outwards synchronously.

Secondly, a worker places the center of the hub on the first contact surface 20 of the clamping blocks 12 by aligning the center of the first placing groove 30 with the center of the hub, presses the first elastic pin 22 in each clamping block 12 downwards to enter the first placing groove 30, and the lower end of the first elastic pin 22 is in contact with the lower end of the first placing groove 30, so that a channel of gas phase communication between the first air inlet channel 40 and the first air outlet channel 31 is blocked; the four linear driving mechanisms 13 are started simultaneously, the output end of each linear driving mechanism 13 moves downwards to drive the movable ring 14 to move downwards in the machining table 11, the movable ring 14 moves downwards to drive the four sliders 35 to move towards the radial inner side direction simultaneously in the machining table 11 through the inclined planes of the movable ring 14 and the sliders 35 in a matched mode to synchronously drive the four clamping blocks 12 to move towards the inner side, the first arc-shaped face 24 is in contact with the outer side of the hub, and therefore the hub is used for blocking the first air outlets 25 in the first arc-shaped face 24.

Finally, the worker connects the output end of the air pump to the first air inlet hole 28, the air pump supplies air into the first air inlet hole 28, the air enters the first air inlet channel 40 through the first air inlet hole 28, a part of the air enters the first air outlet holes 25 through the first air inlet channel 40, the first air outlet holes 25 are all blocked by the hub, and whether the clamping block 12 tightens the hub is judged by whether the air in the first air outlet holes 25 is ejected; a part of air enters the first placing groove 30 through the first air inlet channel 40, and whether the first placing groove 30 is communicated with the first air outlet channel 31 and the first air inlet channel 40 is judged through whether air is discharged from the first air outlet channel 31, so that whether the wheel hub is placed stably or not is known, and the plurality of first elastic pins 22 are pressed into the first placing groove 30.

Example two

Further, with reference to fig. 1-3, an upwardly extending convex portion 39 is provided on the clamping block 12, an outer end surface of the convex portion 39 includes a second arc-shaped surface 26 for cooperating with an inner convex edge of the hub, an upper end surface of the clamping block 12 includes a second contact surface 21 for supporting the hub workpiece, the second contact surface 21 is adjacent to the second arc-shaped surface 26 or connected to the second arc-shaped surface 26, and an acute angle is formed between the second contact surface 21 and the second arc-shaped surface 26.

Further, referring to fig. 1 to 3, a second air inlet 29 is disposed on one side of the clamp block 12, a second air inlet channel 41 is disposed in the clamp block 12, at least two second placing grooves 32 which are opened upward and extend downward are disposed on the second contact surface 21, a second elastic pin 23 is disposed in each second placing groove 32, the second placing grooves 32 and the second air inlet 29 are in gas phase communication through the second air inlet channel 41, a second air outlet channel 33 is disposed in the clamp block 12 at a side deviating from the second air inlet channel 41, and the second air outlet channel 33 is in gas phase communication with the second placing grooves 32; the second arc-shaped surface 26 is provided with a plurality of second air outlet holes 27, and the plurality of second air outlet holes 27 are communicated with the second air inlet channel 41.

Principle of operation

Firstly, the four linear driving mechanisms 13 are started simultaneously, the output end of the linear driving mechanism 13 moves downwards to drive the movable ring 14 to move downwards in the processing table 11, the movable ring 14 moves downwards to drive the four sliders 35 to move radially and inwards simultaneously in the processing table 11 through the inclined planes of the movable ring 14 and the sliders 35, and the four sliders 35 move inwards simultaneously to synchronously drive the four clamping blocks 12 to move inwards.

Secondly, the worker places the center of the hub on the second contact surface 21 of the clamping blocks 12 by aligning the center of the first placing groove 30 with the center of the hub, presses the second elastic pin 23 in each clamping block 12 downwards to enter the second placing groove 32, and the lower end of the second elastic pin 23 is in contact with the lower end in the second placing groove 32, so that a channel for gas phase communication between the second air inlet channel 41 and the second air outlet channel 33 is blocked; four straight line actuating mechanism 13 start simultaneously, straight line actuating mechanism 13's output rebound drives movable ring 14 rebound in processing platform 11, movable ring 14 rebound drives four sliders 35 through movable ring 14 and slider 35 complex inclined plane and outside direction one end removal simultaneously drives four clamp splice 12 and moves to the outside in processing platform 11, makes second arcwall face 26 and the inboard chimb contact of wheel hub to plug up a plurality of second ventholes 27 on the second arcwall face 26.

Finally, the worker connects the output end of the air pump to the second air inlet hole 29, the air pump supplies air into the second air inlet hole 29, the air enters the second air inlet channel 41 through the second air inlet hole 29, a part of the air enters the second air outlet holes 27 through the second air inlet channel 41, the second air outlet holes 27 are blocked by the hub, and whether the clamping block 12 clamps the hub is judged through whether the air in the second air outlet holes 27 is sprayed or not; a part of air enters the second placing groove 32 through the second air inlet channel 41, and whether the second placing groove 32 is communicated with the second air outlet channel 33 and the second air inlet channel 41 is judged through whether air is discharged from the second air outlet channel 33, so that whether the wheel hub is placed stably is known, and the plurality of second elastic pins 23 are pressed into the second placing groove 32.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an anchor clamps are used in automobile wheel hub processing, includes bottom plate (10), its characterized in that, bottom plate (10) upside is equipped with processing platform (11), processing platform (11) and bottom plate (10) centre are equipped with through-hole (34), be equipped with a plurality of clamp splices (12) that are annular interval distribution on processing platform (11), clamp splice (12) are at the up end of processing platform (11) along the radial slide of through-hole (34), through the inclined plane cooperation between a plurality of clamp splices (12) and same activity ring (14), activity ring (14) are connected with the output of sharp actuating mechanism (13), sharp actuating mechanism (13) drive activity ring (14) reciprocate and can drive a plurality of clamp splices (12) radial inwards or outwards removal in step through the inclined plane.

2. The automobile wheel hub processing clamp of claim 1, characterized in that: be equipped with on clamp splice (12) and upwards extend convex part (39), convex part (39) inner end face is including being used for with the first arcwall face (24) of the circumference outside chimb complex of wheel hub, clamp splice (12) upper end face is including first contact surface (20) that are used for supporting the wheel hub work piece, first contact surface (20) are close to first arcwall face (24) or are met with first arcwall face (24), be formed with the acute angle between first contact surface (20) and first arcwall face (24).

3. The automobile wheel hub processing clamp of claim 2, characterized in that: the novel air inlet and outlet device is characterized in that a first air inlet hole (28) is formed in one side of the clamping block (12), a first air inlet channel (40) is formed in the clamping block (12), at least two first placing grooves (30) which are opened upwards and extend downwards are formed in the first contact surface (20), a first elastic pin (22) is arranged in each first placing groove (30), the lower sides of the first placing grooves (30) are communicated with the first air inlet holes (28) through the first air inlet channel (40), a first air outlet channel (31) is formed in the clamping block (12) and is deviated from the side of the first air inlet channel (40), and the first air outlet channel (31) is communicated with the first placing grooves (30) through the air phase.

4. The clamp for machining the automobile hub according to claim 3, characterized in that: a plurality of first air outlet holes (25) are formed in the first arc-shaped surface (24), and the first air outlet holes (25) are communicated with the first air inlet channel (40) in a gas phase manner; the upper end face of the clamping block (12) comprises a non-contact surface (19) at a position deviated from the convex part (39), and the first contact surface (20) is higher than the non-contact surface (19) to form a step structure.

5. The automobile wheel hub processing clamp of claim 1, characterized in that: be equipped with convex part (39) that upwards extends on clamp splice (12), convex part (39) outer terminal surface is including being used for with inboard chimb complex second arcwall face (26) of wheel hub, clamp splice (12) upper end face is including second contact surface (21) that are used for supporting the wheel hub work piece, second contact surface (21) are close to second arcwall face (26) or are met with second arcwall face (26), be formed with the acute angle between second contact surface (21) and second arcwall face (26).

6. The automobile wheel hub processing clamp of claim 5, characterized in that: a second air inlet hole (29) is formed in one side of the clamping block (12), a second air inlet channel (41) is formed in the clamping block (12), at least two second placing grooves (32) which are opened upwards and extend downwards are formed in the second contact surface (21), a second elastic pin (23) is arranged in each second placing groove (32), the second placing grooves (32) are communicated with the second air inlet holes (29) through the second air inlet channels (41), a second air outlet channel (33) is formed in the clamping block (12) and deviates from the second air inlet channel (41), and the second air outlet channel (33) is communicated with the second placing grooves (32) through the air; the second arc-shaped surface (26) is provided with a plurality of second air outlet holes (27), and the second air outlet holes (27) are communicated with a second air inlet channel (41) in a gas phase mode.

7. The clamp for machining the automobile hub according to claim 1, characterized in that: the utility model discloses a clamp piece, including clamp splice (12), clamp splice (12) lower extreme is equipped with slider (35), slider (35) one end is formed with first guide block (36) of upper and lower direction slope, be equipped with on activity ring (14) first guide way (15) of upper and lower direction slope that correspond with first guide block (36), first guide block (36) do with the contact surface of first guide way (15) the inclined plane, first guide block (36) and first guide way (15) sliding fit.

8. The automobile wheel hub processing clamp of claim 7, characterized in that: the front end of the sliding block (35) is provided with a second guide block (37) which extends towards the side of the first placing groove (30) and inclines in the vertical direction, a second guide groove (16) which inclines in the vertical direction with the second guide block (37) is arranged in the middle of the first guide groove (15) on the movable ring (14), the contact surface of the second guide block (37) and the second guide groove (16) is the inclined surface, and the second guide block (37) is in sliding fit with the second guide groove (16); the width of the horizontal section of the first guide block (36) is smaller than that of the horizontal section of the first guide groove (15).

9. The automobile wheel hub processing clamp of claim 7, characterized in that: slider (35) are formed with two third guide way (38) that upper and lower direction slope and bilateral symmetry distribute, be equipped with two third guide block (17) that upper and lower direction slope and bilateral symmetry distribute that correspond with third guide way (38) on activity ring (14), third guide way (38) do with third guide block (17) contact surface the inclined plane, third guide way (38) and third guide block (17) sliding fit.

10. The automobile wheel hub processing clamp of claim 7, characterized in that: a spring (18) is arranged between the sliding block (35) and the processing table (11), and the clamping block (12) slides on the processing table (11) along the radial direction of the through hole (34) through the sliding block (35).