CN217315998U - Clamping device for hub drilling - Google Patents

Abstract

The utility model relates to an automobile wheel hub processing technology field, concretely relates to wheel hub is clamping device for drilling, which comprises a fixing plate and i, be equipped with the tight piece of at least three clamp that is annular interval distribution on the fixed plate, slide connection between tight piece and the fixed plate presss from both sides tight piece edge the radial slip of the tight piece annular distribution place circle of at least three clamp, through the inclined plane cooperation between tight piece of at least three clamp and the same lifting ring, the lifting ring is connected with lift actuating mechanism. The utility model has the advantages that the lifting ring can be driven to move up and down stably by the synchronous driving of the lifting driving mechanism, a plurality of clamping blocks are driven to move synchronously in a linkage manner to clamp the hub with high precision, and the coaxiality of bearing holes at the two ends of the hub is ensured to be high; can also go on in time clearing up the anchor clamps through inlet port, venthole cooperation and keep clean, avoid impurity to influence the centre gripping precision of next wheel hub processing.

Description

Clamping device for hub drilling

Technical Field

The utility model relates to an automobile wheel hub processing technology field, concretely relates to wheel hub is clamping device for drilling.

Background

The hub is an important part on an automobile, the coaxiality of holes at two ends is very important in hub machining, the clamping requirement on the hub is higher during hole drilling or hole milling, if the clamping requirement cannot be met, the machining precision of the hub is directly influenced, for example, a novel unified aluminum hub clamping and positioning tool disclosed in the patent with the publication number of CN201721814429.X regulates and fixes a positioning clamping mechanism and a positioning mechanism one by one, and then clamps the hub, and the technical scheme cannot synchronously clamp and fix the hub, so that the clamping operation is troublesome, and the clamping precision is low.

Disclosure of Invention

The utility model aims at providing a wheel hub is clamping device for drilling can guarantee that wheel hub's both ends hole axiality is high, and the centre gripping precision is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme: clamping device is used in wheel hub drilling, including the fixed plate, be equipped with at least three tight piece that presss from both sides that is annular interval distribution on the fixed plate, sliding connection between tight piece and the fixed plate, press from both sides tight piece edge the radial slip of the tight piece annular distribution place circle of at least three clamp, pass through the inclined plane cooperation between tight piece of at least three clamp and the same elevator ring, the elevator ring is connected with lift actuating mechanism, lift actuating mechanism drives the elevator ring and reciprocates and can drive through the inclined plane at least three tight piece synchronous radial inwards or outwards removal of clamp.

During the use, at first place wheel hub on at least three clamp tight piece that is the even interval distribution of annular, lift actuating mechanism drives the lift ring and reciprocates and can drive through the inclined plane at least three clamp tight piece synchronous radial inwards or outwards remove and carry out the centre gripping to wheel hub, guarantee that wheel hub's both ends hole axiality is high.

Preferably, each clamping block is provided with a first guide block which is inclined in the vertical direction, the lifting 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 of the first guide block and the first guide groove is an inclined surface, and the first guide block is in sliding fit with the first guide groove. The contact surface of the first guide block and the first guide groove is an inclined plane extending from top to bottom to the outside direction; the lifting ring with the first guide groove can synchronously drive the clamping blocks to synchronously clamp the hub in multiple directions simultaneously, and the coaxiality of holes at two ends of the hub is high.

Preferably, each clamping block is provided with a second guide groove which is inclined in the vertical direction, the lifting ring is provided with a second guide block which is inclined in the vertical direction and corresponds to the second guide groove, the contact surface of the second guide block and the second guide groove is an inclined surface, and the second guide block is in sliding fit with the second guide groove. The contact surface of the second guide block and the second guide groove is an inclined surface extending from top to bottom to the outside direction; the lifting ring moves up and down and can synchronously drive the clamping blocks with the second guide grooves to synchronously move inwards or outwards in a radial direction through driving the inclined planes in contact with the second guide blocks, so that the hubs can be further clamped in multiple directions at high precision at the same time, and the coaxiality of holes at two ends of the hubs is high.

Preferably, each clamping block is provided with two second guide grooves, the two second guide grooves are distributed on two sides of the clamping block in the sliding direction in a bilateral symmetry mode, and two second guide blocks matched with the second guide grooves are formed at the positions, close to the lifting ring and the clamping block, of the lifting ring. The lifting ring is arranged to move up and down, the clamping blocks are driven to stably move radially inwards or outwards through the cooperation of the two second guide grooves and the two second guide block inclined planes, the sliding precision of the clamping blocks is improved, and displacement deviation is prevented from being generated when the clamping blocks move.

Preferably, a convex part extending upwards is fixed on the clamping block, the inner end surface of the convex part comprises an arc-shaped surface matched with the convex edge of the hub, the upper end surface of the clamping block comprises a contact surface used for supporting a hub workpiece, the contact surface is close to or connected with the arc-shaped surface, and an acute angle is formed between the contact surface and the arc-shaped surface. The clamping block is arranged to clamp the hub through the acute angle formed between the contact surface and the arc-shaped surface, and the coaxiality of the two end holes of the hub is guaranteed to be high.

Preferably, the upper end surface of the clamping block comprises a non-contact surface at the position deviated from the convex part, and the contact surface is higher than the non-contact surface to form a step structure; the clamping block is provided with an air inlet hole, the arc-shaped surface is provided with an air outlet hole, and an air passage communicated with the air outlet hole and the air inlet hole is arranged in the clamping block. In order to clean the contact surface conveniently, the air inlet hole and the air outlet hole are not positioned on the same surface, and the air inlet hole is positioned on the other surface of the clamping block deviating from the arc-shaped surface; the requirement on the machining precision of the clamping block is reduced by reducing the contact surface, so that the production cost of the clamping device is reduced.

Preferably, the lifting ring is provided with an elastic piece for assisting the lifting ring to move downwards; the clamping block is provided with an accommodating groove with an upward opening, an elastic pin is arranged in the accommodating groove, and the upper end of the elastic pin extends out of the clamping block. When the hub is placed in the elastic pin, the elastic pin is pressed into the clamping block, and when the hub is lifted, the upward force of the elastic pin assists to push the hub to be lifted.

Preferably, a first limiting plate is arranged on the radial periphery of the clamping block, a second limiting plate is arranged on the radial periphery of the lifting ring, a plurality of placing grooves with upward openings are annularly and alternately distributed on the lifting ring, the lower end of the elastic piece is located in the placing grooves, and the elastic piece is limited between the lifting ring and the second limiting plate; the clamping block comprises a clamping block body and a sliding block fixed on the lower side of the clamping block body, the first limiting plate guides the sliding block along the radial direction, a fixing ring is arranged on the fixing plate, and the fixing ring and the second limiting plate are matched to guide the lifting ring up and down. The radial direction is the radial direction of a circle in which at least three clamping blocks are annularly distributed.

Preferably, the output shaft of the lifting driving mechanism is fixedly connected with the lifting ring, the lifting driving mechanism comprises an integrated gas circuit and a plurality of cylinders, the plurality of cylinders are connected in parallel through the integrated gas circuit, or the lifting driving mechanism comprises an integrated oil circuit and a plurality of oil cylinders, and the plurality of oil cylinders are connected in parallel through the integrated oil circuit. The lifting ring can be synchronously and stably driven to move up and down through the lifting driving mechanism, and the clamping precision is improved.

Preferably, the integrated gas circuit or the integrated oil circuit in the lifting driving mechanism is arranged in the fixing plate. The integrated gas circuit or the integrated oil circuit is arranged in the fixing plate, so that the influence of the working environment on the use of the integrated gas circuit or the integrated oil circuit is reduced.

The utility model has the advantages that the lifting ring can be driven to move up and down stably by the synchronous driving of the lifting driving mechanism, a plurality of clamping blocks are driven to move synchronously in a linkage manner to clamp the hub with high precision, and the coaxiality of holes at two ends of the hub is ensured to be high; can also go on in time clearing up the anchor clamps through inlet port, venthole cooperation and keep clean, avoid impurity to influence the centre gripping precision of next hub drilling or hole milling.

Drawings

Fig. 1 is the utility model relates to a wheel hub is clamping device for drilling's schematic structure view.

Fig. 2 is the utility model discloses wheel hub drilling is with clamping device's transverse section.

Fig. 3 is the utility model discloses wheel hub drilling is with vertical cross-sectional view of clamping device.

Fig. 4 is the utility model discloses the horizontal direction cross-sectional view of wheel hub drilling clamping device.

Fig. 5 is the utility model relates to a wheel hub is slider structure schematic diagram of clamping device for drilling.

Fig. 6 is the utility model relates to a hub is drilling with clamping device's lift ring structure sketch map.

Fig. 7 is a partially enlarged view of a point a in fig. 1.

In the figure, the fixed plate 1, the first limit plate 11, the second limit plate 12, the fixed ring 13, the lifting drive mechanism 2, the placing groove 21, the lifting ring 22, the elastic member 23, the first guide groove 24, the second guide groove 25, the first guide block 26, the second guide block 27, the clamp block 3, the slider 31, the contact surface 32, the arc surface 33, the non-contact surface 34, the elastic pin 35, the air inlet hole 36, the air outlet hole 37, the convex portion 38, the receiving groove 39, and the clamp block body 4.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1, 2 and 7, the hub drilling clamping device comprises a fixing plate 1, six clamping blocks 3 distributed at intervals in a ring shape are arranged on the fixing plate 1, convex portions 38 extending upwards are fixed on the clamping blocks 3, inner end faces of the convex portions 38 comprise arc-shaped faces 33 used for being matched with convex edges of a hub, upper end faces of the clamping blocks 3 comprise contact faces 32 used for supporting a workpiece, the contact faces 32 are close to or connected with the arc-shaped faces 33, acute angles are formed between the contact faces 32 and the arc-shaped faces 33, the upper end faces of the clamping blocks 3 deviating from the convex portions 38 comprise non-contact faces 34, and the contact faces 32 are higher than the non-contact faces 34 to form a step structure; be equipped with inlet port 36 on pressing from both sides tight piece 3, be equipped with four ventholes 37 on the arcwall face 33, there is the air flue of intercommunication venthole 37 and inlet port 36 in pressing from both sides tight piece 3, be equipped with upwards open-ended holding tank 39 on pressing from both sides tight piece 3, be equipped with elastic pin 35 in the holding tank 39, elastic pin 35 upper end extends to outside pressing from both sides tight piece 3, sliding connection between pressing from both sides tight piece 3 and the fixed plate 1, press from both sides tight piece 3 along the radial slip of six 3 ring-shaped distribution place circles that press from both sides tight piece, press from both sides tight piece 3 including pressing from both sides tight piece body 4 and fixing slider 31 at the tight piece body 4 downside of clamp, first limiting plate 11 carries out along radial direction guide effect to slider 31.

As shown in fig. 2, 4, 5 and 6, six clamping blocks 3 are matched with the same lifting ring 22 through inclined planes, each clamping block 3 is provided with a first guide block 26 inclined in the vertical direction, the lifting ring 22 is provided with a first guide groove 24 inclined in the vertical direction corresponding to the first guide block 26, the contact surface of the first guide block 26 and the first guide groove 24 is an inclined plane, the first guide block 26 is in sliding fit with the first guide groove 24, each clamping block 3 is provided with a second guide groove 25 inclined in the vertical direction, the lifting ring 22 is provided with a second guide block 27 inclined in the vertical direction corresponding to the second guide groove 25, the contact surface of the second guide block 27 and the second guide groove 25 is an inclined plane, the second guide block 27 is in sliding fit with the second guide groove 25, each clamping block 3 is provided with two second guide grooves 25, the two second guide grooves 25 are distributed on two sides of the clamping block 3 in the sliding direction in a left-right symmetry manner, the proximity of the lifting ring 22 to the gripping block 3 forms two second guide blocks 27 cooperating with the second guide grooves 25.

As shown in fig. 1, 3 and 4, a lifting ring 22 is connected with a lifting driving mechanism 2, an elastic member 23 assisting the lifting ring 22 to move downwards is arranged on the lifting ring 22, a first limit plate 11 is arranged on the radial periphery of a clamping block 3, a second limit plate 12 is arranged on the radial periphery of the lifting ring 22, a plurality of placing grooves 21 with upward openings are distributed at intervals in an annular shape on the lifting ring 22, the lower end of the elastic member 23 is positioned in the placing grooves 21, the elastic member 23 is limited between the lifting ring 22 and the second limit plate 12, a fixing ring 13 is arranged on a fixing plate 1, the fixing ring 13 is matched with the second limit plate 12 to guide the lifting ring 22 up and down, an output shaft of the lifting driving mechanism 2 is fixedly connected with the lifting ring 22, the lifting driving mechanism 2 comprises an integrated oil circuit and six oil cylinders, the six oil cylinders are connected in parallel through the integrated oil circuit, the integrated oil circuit in the lifting driving mechanism 2 is arranged in the fixing plate 1, the lifting driving mechanism 2 drives the lifting ring 22 to move downwards and drives the six clamping blocks 3 to move inwards in a synchronous radial direction through the inclined planes.

When the lifting driving mechanism 2 is used, firstly, the wheel hub is placed on the contact surfaces 32 on the six clamping blocks 3, the six oil cylinders are connected in parallel through the integrated oil circuit and synchronously return to drive the lifting ring 22 to stably move downwards between the second limiting plate 12 and the fixing ring 13, and the moment of returning of the six oil cylinders is compensated through the downward elastic force of the twelve elastic pieces 23 while the lifting driving mechanism 2 returns; the inclined plane that the lifting ring 22 moved down contacted through first guide block 26 and first guide way 24 mutually supports to slide and drives and synchronously drives six clamp splice footpaths 3 and inwards move, and the inclined plane that rethread second guide block 27 and second guide way 25 contacted mutually supports to slide and drives six clamp splice 3 and radially inwards move simultaneously and carry out high precision centre gripping to the wheel hub, and the wheel hub chimb is blocked to the acute angle between the cambered surface 33 and the cambered surface 32 to the cooperation contact surface 33 of cambered surface 33 on six clamp splice, guarantees that the both ends hole axiality of wheel hub is high.

Secondly, the hub is drilled or milled, after the drilling or milling is completed, six cylinders in the lifting driving mechanism 2 are connected in parallel through an integrated gas circuit or six oil cylinders are connected in parallel through an integrated oil circuit and synchronously driven to lift out to drive the lifting ring 22 to stably move upwards, the lifting ring 22 moves upwards, the inclined planes in contact with the first guide block 26 and the first guide groove 24 are matched with each other to slide to drive the six clamping blocks 3 to synchronously move inwards, meanwhile, the inclined planes in contact with the second guide block 27 and the second guide groove 25 are matched with each other to slide to drive the six clamping blocks 3 to synchronously slide outwards to release the hub, and the elastic pin 35 pushes the hub to move upwards in the accommodating groove 39 in an upward elastic assisting mode.

Finally, the air pumps are connected in parallel to air inlet holes 36 of the six clamping blocks 3, air enters air passages of the clamping blocks 3 through the air inlet holes 36, and then is discharged through four air outlet holes 37 to clean the contact surfaces 32 and the non-contact surfaces 33 on the clamping blocks 3.

Claims (10)

1. The utility model provides a wheel hub is clamping device for drilling, its characterized in that, includes fixed plate (1), be equipped with at least three tight piece (3) of clamp that are annular interval distribution on fixed plate (1), press from both sides sliding connection between tight piece (3) and fixed plate (1), press from both sides tight piece (3) and follow at least three tight piece (3) annular distribution place circle radial slip, pass through the inclined plane cooperation between tight piece (3) of at least three clamp and same lift ring (22), lift ring (22) are connected with lift actuating mechanism (2), lift actuating mechanism (2) drive lift ring (22) reciprocate and can drive through the inclined plane at least three tight piece (3) synchronous radial inside or outside removal of clamp.

2. The hub drilling clamping device according to claim 1, wherein: every it is first guide block (26) that the upper and lower direction slope to press from both sides tight piece (3) and be formed with, be equipped with on lift ring (22) with first guide block (26) correspond first guide way (24) of upper and lower direction slope, the contact surface of first guide block (26) and first guide way (24) is the inclined plane, first guide block (26) and first guide way (24) sliding fit.

3. The hub drilling clamping device according to claim 1, wherein: every it is formed with second guide way (25) of upper and lower direction slope to press from both sides tight piece (3), be equipped with on lift ring (22) with second guide way (25) correspond second guide piece (27) of upper and lower direction slope, second guide piece (27) and second guide way (25) contact surface do the inclined plane, second guide piece (27) and second guide way (25) sliding fit.

4. The hub drilling clamping device according to claim 3, wherein: every be equipped with two second guide way (25) on pressing from both sides tight piece (3), two second guide way (25) bilateral symmetry distribute in the sliding direction both sides that press from both sides tight piece (3), lift ring (22) and the department of closing on of pressing from both sides tight piece (3) form two second guide blocks (27) with second guide way (25) complex.

5. The clamping device for hub drilling according to claim 1, 2, 3 or 4, wherein: clamping block (3) is last to be fixed with convex part (38) that upwards extends, convex part (38) inner end face is including being used for with convex edge complex arcwall face (33) of wheel hub, clamping block's (3) upper end face is including being used for supporting contact surface (32) of wheel hub work piece, contact surface (32) are close to arcwall face (33) or are met with arcwall face (33), be formed with the acute angle between contact surface (32) and arcwall face (33).

6. The clamping device for hub drilling according to claim 5, wherein: the upper end face of the clamping block (3) deviates from the convex part (38) and comprises a non-contact surface (34), and the contact surface (32) is higher than the non-contact surface (34) to form a step structure; the clamping block (3) is provided with an air inlet hole (36), the arc-shaped surface (33) is provided with an air outlet hole (37), and the clamping block (3) is provided with an air passage communicated with the air outlet hole (37) and the air inlet hole (36).

7. The clamping device for hub drilling according to claim 1, wherein: the lifting ring (22) is provided with an elastic piece (23) for assisting the lifting ring (22) to move downwards; clamping block (3) is provided with an upward opening accommodating groove (39), an elastic pin (35) is arranged in the accommodating groove (39), and the upper end of the elastic pin (35) extends out of the clamping block (3).

8. The clamping device for hub drilling according to claim 7, wherein: a first limiting plate (11) is arranged on the radial periphery of the clamping block (3), a second limiting plate (12) is arranged on the radial periphery of the lifting ring (22), a plurality of placing grooves (21) with upward openings are distributed on the lifting ring (22) in an annular interval mode, the lower end of the elastic piece (23) is located in the placing grooves (21), and the elastic piece (23) is limited between the lifting ring (22) and the second limiting plate (12); press from both sides tight piece (3) including pressing from both sides tight piece body (4) and fixing slider (31) of pressing from both sides tight piece body (4) downside, the cooperation carries out along radial direction guide effect to slider (31) between first limiting plate (11) and fixed plate (1), be equipped with solid fixed ring (13) on fixed plate (1), the cooperation is gone on leading from top to bottom to lift ring (22) between solid fixed ring (13) and second limiting plate (12).

9. The hub drilling clamping device according to claim 1, wherein: the lifting driving mechanism (2) comprises an integrated gas circuit and a plurality of cylinders, the cylinders are connected in parallel through the integrated gas circuit, or the lifting driving mechanism (2) comprises an integrated oil circuit and a plurality of oil cylinders, and the oil cylinders are connected in parallel through the integrated oil circuit.

10. The hub drilling clamping device according to claim 9, wherein: and an integrated gas circuit or an integrated oil circuit of the lifting driving mechanism (2) is arranged on the fixing plate (1).

Images