CN115255983B - Clamp for machining automobile hub - Google Patents
Clamp for machining automobile hub Download PDFInfo
- Publication number
- CN115255983B CN115255983B CN202210843513.3A CN202210843513A CN115255983B CN 115255983 B CN115255983 B CN 115255983B CN 202210843513 A CN202210843513 A CN 202210843513A CN 115255983 B CN115255983 B CN 115255983B
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- Prior art keywords
- hub
- guide
- block
- air inlet
- contact surface
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- 238000003754 machining Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000001154 acute effect Effects 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention belongs to the technical field of automobile hub machining, and particularly relates to an automobile hub machining clamp which comprises a bottom plate, wherein a machining table is arranged on the upper side of the bottom plate, a through hole is formed between the machining table and the bottom plate, a plurality of clamping blocks which are distributed in an annular interval mode are arranged on the machining table, the clamping blocks are matched with the same movable ring through inclined planes, and the movable ring is connected with the output end of a linear driving mechanism. The invention 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; the elastic pin is matched with the placing groove to check whether the hub is stably placed on the contact surface, and then the air outlet hole is matched with the air inlet hole to check whether the clamping block is used for clamping the hub, so that the hub is prevented from being machined when not clamped, and displacement during the machining of the hub is prevented; the outer side and the inner side of the hub are clamped through the first arc-shaped surface and the second arc-shaped surface on the convex part, so that the inner surface and the outer surface of the hub are conveniently machined.
Description
Technical Field
The invention belongs to the technical field of automobile hub machining, and particularly relates to a clamp for automobile hub machining.
Background
The hub is a metal part that supports the center of the tire on a shaft. In order to meet the precision requirements of the product, the inner side surface and the outer side surface of the hub are usually required to be respectively turned. When the hub is processed, the hub is required to be fastened and fixed by the clamp.
The existing clamp for machining the automobile hub is low in clamping precision and cannot synchronously move, so that the multiple directions of the hub are simultaneously contacted and clamped, and further, the fact that the clamping force of each clamping block to the hub is different easily occurs, so that the hub is easy to displace during machining, and the machining effect is affected.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an automobile hub processing clamp capable of synchronously moving in multiple directions to clamp a hub, wherein the clamping forces of clamping blocks on the hub are kept the same.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a fixture for automobile wheel hub 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, be equipped with a plurality of clamp splice that are annular interval distribution on the processing platform, the radial slip of clamp splice along the through-hole at the up end of processing platform, through the inclined plane cooperation between a plurality of clamp splice and the same expansion ring, the expansion ring is connected with linear drive mechanism's output, linear drive mechanism drives the expansion ring and reciprocates and can drive a plurality of clamp splice synchronous radial inwards or outwards removal through the inclined plane.
The number of the four 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 phenomenon that the clamping blocks cannot synchronously move is avoided; the linear driving mechanism drives the movable ring to move up and down, and can drive the clamping blocks to synchronously move radially inwards or outwards through the inclined plane, so that the clamping force of each clamping block on the hub is kept the same.
Preferably, the clamping block is provided with an upward extending convex part, the inner end surface of the convex part comprises a first arc-shaped surface matched with the convex edge of the circumferential outer side of the hub, the upper end surface of the clamping block comprises a first contact surface for supporting a hub workpiece, the first contact surface is adjacent to or connected with the first arc-shaped surface, and an acute angle is formed between the first contact surface and the first arc-shaped surface. The first contact surface and the first arc-shaped surface form an acute angle therebetween for clamping the outer side of the hub, so that the hub is prevented from moving upwards or displacing during processing, and the clamping force of each clamping block on the hub is kept the same.
Preferably, a first air inlet hole is formed in one side of the clamping block, a first air inlet channel is formed in the clamping block, at least two first placing grooves which are opened upwards and extend downwards are formed in the first contact surface, first elastic pins are arranged in each first placing groove, the lower side of each first placing groove is communicated with the first air inlet hole through the first air inlet channel, a first air outlet channel is formed in the clamping block, deviating from the first air inlet channel, and the first air outlet channel is communicated with the first placing grooves through the air. The first elastic pins are matched with the first placing grooves to check whether the wheel hubs are stably placed on the first contact surfaces, and when the wheel hubs are stably placed on the first contact surfaces, the first elastic pins on the first contact surfaces are pressed into the first placing grooves, so that the lower ends of the first elastic pins are in contact with the lower ends inside the first placing grooves, and the channels which are communicated with the first air inlet channels and the first air outlet channels are blocked, so that the first air outlet channels cannot air. The first elastic pin is used for lifting the hub through upward elasticity of the first elastic pin and upward pushing of the first elastic pin by gas after hub processing is completed, and the hub is convenient to take out. The outlet of the first air outlet channel is aligned with the upper end surface of the processing table, and the upper end surface of the processing table is cleaned by air outlet of the first air outlet channel.
Preferably, the first arc-shaped surface is provided with a plurality of first air outlet holes, and the first air outlet holes are communicated with the first air inlet channel in a gas phase manner; the position, deviating from the convex part, of the upper end face of the clamping block comprises a non-contact surface, and the first contact surface is higher than the non-contact surface to form a step structure. The first air outlet is used for checking whether the clamping block clamps the hub or not and cleaning the first contact surface by air outlet after the hub is machined, whether the clamping block clamps the hub or not is judged by whether the air outlet is formed in the first air outlet, a part of air entering through the first air inlet enters into the first air outlet, the first air outlet is completely blocked by the hub, the first air outlet cannot be air outlet, and the clamping block clamps the 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 machining precision of the clamping block is reduced.
Preferably, the clamping block is provided with an upward extending convex part, the outer end surface of the convex part comprises a second arc-shaped surface matched with the inner convex edge of the hub, the upper end surface of the clamping block comprises a second contact surface for supporting a hub workpiece, the second contact surface is adjacent to or connected with the second arc-shaped surface, and an acute angle is formed between the second contact surface and the second arc-shaped surface. The second contact surface and the second arc surface are formed with an acute angle therebetween for clamping the inner side of the hub, so that the hub is prevented from moving upwards or displacing during processing, and the clamping force of each clamping block on the hub is kept the same.
Preferably, a second air inlet hole 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 hole through the second air inlet channel in a gas phase manner, a second air outlet channel is formed in the clamping block, deviated from the second air inlet channel, and the second air outlet channel is communicated with the second placing grooves in a gas phase manner; the second air outlet holes are provided with a plurality of 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 and the first elastic pin are the same in action and are used for checking whether the hub is stably placed on the second contact surface and jacking the hub after processing so as to facilitate taking out of the hub.
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 is inclined in the vertical direction, the movable ring is provided with a first guide groove which is inclined in the vertical direction and corresponds to the first guide block, the contact surface between 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. The movable ring moves up and down, the sliding block is driven to synchronously move inwards or outwards through sliding fit of the first guide block and the first guide groove, and the hubs are clamped by synchronously moving in multiple directions.
Preferably, the front end of the sliding block is provided with a second guide block extending to the side of the first placing groove and inclining in the up-down direction, the movable ring is provided with a second guide groove inclining in the up-down direction with the second guide block in the middle of the first guide groove, 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. The second guide block is in sliding fit with the second guide groove, the movable ring is further guided to drive the sliding block to move, the left and right of the movable ring are not easy to be cheap, and the movable ring can synchronously move in multiple directions to clamp the 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, so that the contact area of the first guide block and the first guide groove is reduced, friction force between the first guide block and the first guide groove is reduced, and the first guide block and the first guide groove are prevented from being clamped.
Preferably, the sliding block is provided with two third guide grooves which incline in the up-down direction and are distributed in a bilateral symmetry manner, the movable ring is provided with two third guide blocks which incline in the up-down direction and are distributed in a bilateral symmetry manner corresponding to the third guide grooves, the contact surface of the third guide grooves and the third guide blocks is the inclined surface, and the third guide grooves and the third guide blocks are in sliding fit. The movable ring is in sliding fit with the third guide block through the third guide groove to further conduct guiding movement action on the sliding blocks, the sliding blocks are prevented from moving at different distances, and the clamping force of the clamping blocks on the hub is kept to be the same.
Preferably, a spring is arranged between the slider and the processing table, and the clamping block slides on the processing table along the radial direction of the through hole through the slider. The spring is used for resetting the sliding block to prevent the sliding block from being blocked.
The beneficial effects are that:
1. through the cooperation of the inclined planes of the sliding blocks and the movable rings, 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.
2. The elastic pin is matched with the placing groove to check whether the hub is stably placed on the contact surface, so that the hub is prevented from being horizontally placed, and errors are caused to hub processing.
3. Whether the clamping block is clamped to the hub is checked through the matching of the air outlet hole and the air inlet hole, and machining is avoided when the hub is not clamped, so that displacement during hub machining is prevented, and the hub machining effect is affected.
4. The outer side and the inner side of the hub are clamped through the first arc-shaped surface and the second arc-shaped surface on the convex part, so that the inner surface and the outer surface of the hub are conveniently machined.
Drawings
The invention is further explained below with reference to the drawings and examples:
FIG. 1 is a schematic view of an isometric structure of the present invention.
Fig. 2 is a schematic top view of the present invention.
FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2.
Fig. 4 is a partially enlarged structural schematic diagram at a in fig. 3.
FIG. 5 is a schematic top view of the slider and the movable ring according to the present invention.
FIG. 6 is a schematic isometric view of a movable ring according to the present invention.
FIG. 7 is a schematic diagram of an axial structure of a slider according to the present invention.
In the drawing, a base 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 surface 24, a first air outlet hole 25, a second arc surface 26, a second air outlet hole 27, a first air inlet hole 28, a second air inlet hole 29, a first placing groove 30, a first air outlet channel 31, a second placing 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.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
Referring to fig. 1-3, a fixture for machining an automobile hub 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 which are distributed in an annular interval are arranged on the machining table 11, the clamping blocks 12 slide along the radial direction of the through hole 34 on the upper end surface 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 through the inclined planes so as to drive the clamping blocks 12 to synchronously move radially inwards or outwards.
Further, referring to fig. 1-3, the clamp block 12 is provided with an upwardly extending protrusion 39, an inner end surface of the protrusion 39 includes a first arcuate surface 24 for mating with a peripheral outer flange of the hub, an upper end surface of the clamp block 12 includes a first contact surface 20 for supporting a hub workpiece, the first contact surface 20 is adjacent to the first arcuate surface 24 or meets the first arcuate surface 24, and an acute angle is formed between the first contact surface 20 and the first arcuate surface 24.
Further, referring to fig. 1-3, a first air inlet hole 28 is formed on 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 side of the first placing groove 30 is communicated with the first air inlet hole 28 through the first air inlet channel 40, a first air outlet channel 31 is formed in the clamping block 12, deviating from the first air inlet channel 40, and the first air outlet channel 31 is communicated with the first placing grooves 30 through the air.
Further, referring to fig. 1-3, the first arcuate surface 24 is provided with a plurality of first air outlet holes 25, and the first air outlet holes 25 are in gas communication with the first air inlet channel 40; the upper end surface of the clamping block 12, which deviates from the convex portion 39, comprises a non-contact surface 19, and the first contact surface 20 is higher than the non-contact surface 19 to form a step structure.
Further, referring to fig. 1, 5, 6 and 7, a slider 35 is provided at the lower end of the clamp block 12, a first guide block 36 inclined in the up-down direction is formed at one end of the slider 35, a first guide groove 15 inclined in the up-down direction corresponding to the first guide block 36 is provided on the movable ring 14, the 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 slidably engaged 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 up-down direction is provided at the front end of the slider 35, a second guide groove 16 inclined in the up-down 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 is slidably engaged with the second guide groove 16; 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 which are inclined in the up-down direction and are symmetrically distributed in the left-right direction, the movable ring 14 is provided with two third guide blocks 17 which are inclined in the up-down direction and are symmetrically distributed in the left-right direction corresponding to the third guide grooves 38, the contact surfaces of the third guide grooves 38 and the third guide blocks 17 are inclined surfaces, and the third guide grooves 38 and the third guide blocks 17 are in sliding fit.
Further, referring to fig. 1 to 2, a spring 18 is provided between the slider 35 and the processing table 11, and the clamp block 12 slides on the processing table 11 in the radial direction of the through hole 34 via the slider 35.
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 outwards in the processing table 11 simultaneously in the radial direction through the inclined surfaces of the movable ring 14 and the sliding blocks 35, and the four sliding blocks 35 move outwards simultaneously to drive the four clamping blocks 12 to move outwards simultaneously.
Secondly, the worker positions the centers of the hubs on the first contact surface 20 of the clamping blocks 12 in alignment with the centers of the first placing grooves 30, presses the first elastic pins 22 in each clamping block 12 downwards into the first placing grooves 30, and the lower ends of the first elastic pins 22 are contacted with the lower ends of the first placing grooves 30 so as to block the channels of the first air inlet channels 40 communicated with the first air outlet channels 31; the four linear driving mechanisms 13 are started simultaneously, the output ends of the linear driving mechanisms 13 move 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 sliding blocks 35 to move radially inwards simultaneously in the processing table 11 through the inclined surfaces of the movable ring 14 and the sliding blocks 35, and the four clamping blocks 12 are synchronously driven to move inwards, so that the first arc-shaped surface 24 is contacted with the outer side of the hub, and a plurality of first air outlet holes 25 in the first arc-shaped surface 24 are blocked through the hub.
Finally, the staff 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 air enters the first air outlet holes 25 through the first air inlet channel 40, the first air outlet holes 25 are blocked by the wheel hubs, and whether the clamping block 12 is clamped to the wheel hubs is judged by whether the air in the first air outlet holes 25 is sprayed out or not; part of air enters the first placing groove 30 through the first air inlet channel 40, whether the first placing groove 30 is communicated with the first air outlet channel 31 and the first air inlet channel 40 is judged by whether air is discharged from the first air outlet channel 31, and accordingly whether the wheel hub is placed stably or not is known to press the plurality of first elastic pins 22 into the first placing groove 30.
Example two
Referring to fig. 1-3, a fixture for machining an automobile hub 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 which are distributed in an annular interval are arranged on the machining table 11, the clamping blocks 12 slide along the radial direction of the through hole 34 on the upper end surface 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 through the inclined planes so as to drive the clamping blocks 12 to synchronously move radially inwards or outwards.
Further, referring to fig. 1-3, the clamp block 12 is provided with an upwardly extending protrusion 39, the outer end surface of the protrusion 39 includes a second arc surface 26 for mating with the inner flange of the hub, the upper end surface of the clamp block 12 includes a second contact surface 21 for supporting a hub workpiece, the second contact surface 21 is adjacent to the second arc surface 26 or is connected with the second arc surface 26, and an acute angle is formed between the second contact surface 21 and the second arc surface 26.
Further, referring to fig. 1-3, a second air inlet 29 is formed on 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 and the second air inlet 29 are communicated through the second air inlet channel 41, a second air outlet channel 33 is formed in the clamping block 12, deviating from the second air inlet channel 41, and the second air outlet channel 33 is communicated with the second placing grooves 32; the second arc 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 in a gas phase mode.
Further, referring to fig. 1, 5, 6 and 7, a slider 35 is provided at the lower end of the clamp block 12, a first guide block 36 inclined in the up-down direction is formed at one end of the slider 35, a first guide groove 15 inclined in the up-down direction corresponding to the first guide block 36 is provided on the movable ring 14, the 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 slidably engaged 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 up-down direction is provided at the front end of the slider 35, a second guide groove 16 inclined in the up-down 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 is slidably engaged with the second guide groove 16; 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 which are inclined in the up-down direction and are symmetrically distributed in the left-right direction, the movable ring 14 is provided with two third guide blocks 17 which are inclined in the up-down direction and are symmetrically distributed in the left-right direction corresponding to the third guide grooves 38, the contact surfaces of the third guide grooves 38 and the third guide blocks 17 are inclined surfaces, and the third guide grooves 38 and the third guide blocks 17 are in sliding fit.
Further, referring to fig. 1 to 2, a spring 18 is provided between the slider 35 and the processing table 11, and the clamp block 12 slides on the processing table 11 in the radial direction of the through hole 34 via the slider 35.
Principle of operation
Firstly, the four linear driving mechanisms 13 are started simultaneously, the output ends of the linear driving mechanisms 13 move 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 sliding blocks 35 to move radially inwards in the processing table 11 simultaneously through the inclined surfaces of the movable ring 14 and the sliding blocks 35, and the four sliding blocks 35 move inwards simultaneously to drive the four clamping blocks 12 to move inwards synchronously.
Secondly, the worker positions the center of the hub on the second contact surface 21 of the clamping blocks 12 in alignment with the center of the first placing groove 30, presses the second elastic pins 23 in each clamping block 12 downwards into the second placing groove 32, and the lower ends of the second elastic pins 23 are contacted with the lower ends in the second placing groove 32, so that the channels communicated with the second air inlet channels 41 and the second air outlet channels 33 are blocked; the four linear driving mechanisms 13 are started simultaneously, the output ends of the linear driving mechanisms 13 move upwards to drive 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 outwards simultaneously in the processing table 11 through the matched inclined planes of the movable ring 14 and the sliding blocks 35, one end of the movable ring in the outer side direction moves synchronously to drive the four clamping blocks 12 to move outwards, the second arc-shaped surface 26 is in contact with the convex edge on the inner side of the hub, and therefore a plurality of second air outlet holes 27 in the second arc-shaped surface 26 are blocked.
Finally, the staff 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 air enters the plurality of second air outlet holes 27 through the second air inlet channel 41, the plurality of second air outlet holes 27 are blocked by the wheel hubs, and whether the clamping block 12 clamps the wheel hubs is judged by whether the air in the second air outlet holes 27 is sprayed out; part of air enters the second placing groove 32 through the second air inlet channel 41, whether the second placing groove 32 is communicated with the second air outlet channel 33 and the second air inlet channel 41 is judged by whether the second air outlet channel 33 is out of air, so that whether the wheel hub is placed stably or not is known, and a plurality of second elastic pins 23 are pressed into the second placing groove 32.
The foregoing embodiments of the present invention are not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (5)
1. The clamp for machining the automobile hub comprises a bottom plate (10), and is characterized in that 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) which are distributed in an annular interval are arranged on the machining table (11), the clamping blocks (12) slide along the radial direction of the through hole (34) on the upper end surface 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 to drive the clamping blocks (12) to move inwards or outwards synchronously through the inclined planes;
the clamping block (12) is provided with an upward extending convex part (39), the inner end surface of the convex part (39) comprises a first arc-shaped surface (24) which is matched with the circumferential outer convex edge of the hub, the upper end surface of the clamping block (12) comprises a first contact surface (20) which is used for supporting a hub workpiece, the first contact surface (20) is adjacent to the first arc-shaped surface (24) or is 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);
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 side of each first placing groove (30) is communicated with the first air inlet hole (28) through the first air inlet channel (40), a first air outlet channel (31) is formed in the side, deviating from the first air inlet channel (40), of the clamping block (12), and the first air outlet channels (31) are communicated with the first placing grooves (30) through the first air inlet channel (40);
the first arc-shaped surface (24) is provided with a plurality of first air outlet holes (25), and the first air outlet holes (25) are communicated with the first air inlet channel (40) in a gas phase manner; the position, deviating from the convex part (39), of the upper end surface of the clamping block (12) comprises a non-contact surface (19), and the first contact surface (20) is higher than the non-contact surface (19) so as to form a step structure;
the clamping block (12) is provided with an upward extending convex part (39), the outer end surface of the convex part (39) comprises a second arc-shaped surface (26) which is matched with the inner convex edge of the hub, the upper end surface of the clamping block (12) comprises a second contact surface (21) which is used for supporting a hub workpiece, the second contact surface (21) is adjacent to the second arc-shaped surface (26) or is connected with 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);
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 hole (29) through the second air inlet channel (41) in a gas phase manner, a second air outlet channel (33) is formed in the side, deviating from the second air inlet channel (41), of the clamping block (12), and the second air outlet channel (33) is communicated with the second placing grooves (32) in a gas phase manner; 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 the second air inlet channel (41) in a gas phase mode.
2. The fixture for machining an automobile hub according to claim 1, wherein: the clamping block is characterized in that a sliding block (35) is arranged at the lower end of the clamping block (12), a first guide block (36) inclining in the vertical direction is formed at one end of the sliding block (35), a first guide groove (15) inclining in the vertical direction corresponding to the first guide block (36) is formed in the movable ring (14), the contact surface between the first guide block (36) and the first guide groove (15) is the inclined surface, and the first guide block (36) is in sliding fit with the first guide groove (15).
3. The fixture for machining automobile hubs as claimed in claim 2, wherein: the front end of the sliding block (35) is provided with a second guide block (37) extending to the side of the first placing groove (30) and inclining in the vertical direction, a second guide groove (16) inclining 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).
4. The fixture for machining automobile hubs as claimed in claim 2, wherein: the sliding block (35) is provided with two third guide grooves (38) which are inclined in the vertical direction and distributed in a bilateral symmetry manner, the movable ring (14) is provided with two third guide blocks (17) which are inclined in the vertical direction and distributed in a bilateral symmetry manner corresponding to the third guide grooves (38), the contact surface of the third guide grooves (38) and the third guide blocks (17) is the inclined surface, and the third guide grooves (38) are in sliding fit with the third guide blocks (17).
5. The fixture for machining automobile hubs as claimed in claim 2, wherein: 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210843513.3A CN115255983B (en) | 2022-07-18 | 2022-07-18 | Clamp for machining automobile hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210843513.3A CN115255983B (en) | 2022-07-18 | 2022-07-18 | Clamp for machining automobile hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115255983A CN115255983A (en) | 2022-11-01 |
| CN115255983B true CN115255983B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210843513.3A Active CN115255983B (en) | 2022-07-18 | 2022-07-18 | Clamp for machining automobile hub |
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| Country | Link |
|---|---|
| CN (1) | CN115255983B (en) |
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| Publication number | Publication date |
|---|---|
| CN115255983A (en) | 2022-11-01 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240307 Address after: Building 3, No. 8 Humen Road, Linpu Town, Xiaoshan District, Hangzhou City, Zhejiang Province, 311251 Applicant after: Hangzhou Banglei Auto Parts Co.,Ltd. Country or region after: Zhong Guo Address before: No. 19, Kesan Road, Taoyuan Street, Ninghai County, Ningbo, Zhejiang 315000 (Ningbo Mingde Machinery Automation Co., Ltd.) Applicant before: Ningbo Mingde Machinery Automation Co.,Ltd. Country or region before: Zhong Guo |
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