CN219967199U - Clamping mechanism for hub bearing hole site machining clamp - Google Patents

Abstract

The utility model relates to the technical field of hub bearing machining, and particularly discloses a clamping mechanism for a hub bearing hole site machining clamp. The scheme is used for solving the problem that the outer surface of the cylinder section is easy to be clamped and damaged when the inner ring of the hub bearing is clamped on the outer surface of the cylinder section during hole site machining at present.

Description

Clamping mechanism for hub bearing hole site machining clamp

Technical Field

The utility model relates to the technical field of hub bearing machining, in particular to a clamping mechanism for a hub bearing hole site machining clamp.

Background

The main function of the hub bearing is bearing, which is an indispensable part on the automobile, the hub bearing comprises an inner ring, a small inner ring, an outer ring, rolling bodies and a retainer, two rows of raceways are arranged on the outer ring, one row of raceways are respectively arranged on the inner ring and the small inner ring, and the rolling bodies are positioned in the raceways under the action of the retainer and move in the raceways when the inner ring and the outer ring of the hub bearing rotate relatively.

When the hub bearing is used, the hub bearing needs to be connected with a rim, a brake disc and a knuckle, so that mounting holes are required to be machined on an inner ring flange and/or an outer ring flange of the hub bearing, the inner ring or the outer ring of the hub bearing needs to be clamped by a clamp for machining the hub bearing, such as a clamp for machining the hub bearing with the patent publication number of CN210997688U, and a plurality of clamping blocks on the clamp are mutually close to enclose the inner ring of the hub bearing to tightly support the inner ring of the hub bearing during clamping.

However, in the existing clamping mode, the outer surface of the cylindrical column section of the inner ring of the hub bearing is exactly the surface of the roller path, and is also the matching surface of the inner ring and the small inner ring on the hub bearing, so that the quality requirement of the outer surface of the cylindrical column section is high, and the outer surface of the cylindrical column section is easy to be clamped and damaged after the cylindrical column section is clamped in the clamping mode in the prior art.

Disclosure of Invention

The utility model aims to provide a clamping mechanism for a hub bearing hole site machining clamp, so as to solve the problem that the outer surface of a cylindrical column section is easy to be clamped and damaged when an inner ring of a hub bearing is clamped on the outer surface of the cylindrical column section during hole site machining at present.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the clamping mechanism for the hub bearing hole site machining clamp comprises an annular seat and a plurality of elastic clamping jaws located in the annular seat, wherein each elastic clamping jaw is provided with a clamping block, the elastic clamping jaws are matched with the annular seat through inclined planes, the elastic clamping jaws can move along the inclined planes, and the clamping blocks are used for clamping the periphery of a flange of a hub bearing.

The principle and the advantages of the scheme are as follows: when adopting this scheme, because the grip block is following the inclined plane and remove the back along the elastic clamping jaw, each grip block is close to each other with centre gripping hub bearing, because of when this scheme centre gripping hub bearing, what the centre gripping is hub bearing's flange periphery, and not have a section of thick bamboo post periphery of higher quality requirement to the surface, and the flange periphery is because of not having the cooperation relation with other parts, so the surface quality requirement of flange periphery is lower, the mode of adopting the grip flange periphery can enough avoid section of thick bamboo post periphery surface to damage the condition because of the centre gripping, simultaneously, the external diameter of flange periphery is greater than the external diameter of section of thick bamboo post greatly, be favorable to improving the area of contact of grip block and hub bearing, and then improve the stability of centre gripping.

Preferably, as an improvement, the hub bearing further comprises a support column, wherein the support column is positioned below the flange of the hub bearing and is used for supporting the flange.

The beneficial effects are that: according to the scheme, the clamping of the hub bearing on the periphery of the flange is realized through the clamping blocks, and the support column is used for supporting the flange on the hub bearing from the bottom end of the flange, so that when the flange is used for machining a hole site, even if the hole site is eccentric to the hub bearing, the stability of clamping can be improved under the cooperation of the support column and the clamping blocks, and the improvement of the machining precision of the hole site is facilitated.

Preferably, as an improvement, the support column is hollow, the top and the bottom are through holes, and the hole site of the flange, which needs to be perforated, is positioned in the hollow space of the support column.

The beneficial effects are that: this scheme makes the sweeps that produces during processing can be directly from the top through-hole whereabouts of support column to in the cavity space of support column to discharge from the bottom through-hole in cavity space, avoided piling up of sweeps on anchor clamps.

Preferably, as an improvement, the hub bearing further comprises a positioning member for limiting circumferential rotation of the hub bearing.

Preferably, as an improvement, the positioning piece is located above the flange of the hub bearing, and the positioning piece is horizontally and slidably connected to a fixedly arranged mounting seat. So that the positioning piece can be far away from the hub bearing after horizontally moving, and the placement of the hub bearing is facilitated.

Preferably, as an improvement, the bottoms of the elastic clamping jaws are all fixed on the same connecting ring, and the elastic clamping jaw further comprises a fixed annular positioning seat, and the connecting ring is vertically and slidably connected to the annular positioning seat.

The beneficial effects are that: the existence of the connecting ring enables the action of the elastic clamping jaw to be consistent, and meanwhile, the connecting ring is enabled to slide more stably through vertical sliding connection on the annular positioning seat.

Preferably, as an improvement, a limiting piece is arranged on the connecting ring, and the bottom of the limiting piece protrudes out of the connecting ring and can prop against the annular positioning seat; according to the scheme, the moving stroke of the elastic clamping jaw is limited through the limiting piece.

Preferably, as an improvement, a plurality of weight-reducing grooves are formed in the side wall of the annular seat so as to reduce the weight of the annular seat.

Preferably, as an improvement, the weight-reducing grooves and the elastic clamping jaws are distributed in a staggered manner along the circumferential direction of the hub bearing.

The beneficial effects are that: this scheme makes and forms the vacant region between the adjacent grip block, makes things convenient for the hub bearing fail timely exhaust sweeps can in time fall the vacant region when processing the hole site, avoids piling up of sweeps on the grip block.

Preferably, as an improvement, the clamping block is detachably connected to the elastic clamping jaw; the clamping block is convenient to replace after being worn, and the clamping of the hub bearing with the new specification can be met by only changing the specification of the clamping block after the specification of the hub bearing is changed.

Drawings

Fig. 1 is a schematic three-dimensional structure of an embodiment of the present utility model.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a rotational cross-sectional view of A-A in fig. 2.

Fig. 4 is a B-B rotational cross-sectional view of fig. 2.

Fig. 5 is a schematic view of a partial explosion of an embodiment of the present utility model.

Fig. 6 is a top cross-sectional view of a positioning member according to an embodiment of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the device comprises a workbench 100, a hub bearing inner ring 10, an annular seat 1, a weight reduction groove 11, an elastic clamping jaw 2, a clamping block 21, a connecting ring 22, a limiting piece 221, a connecting rod 23, a supporting column 3, an annular positioning seat 4, an end cover 41, an upper chamber 401, a lower chamber 402, a pull plate 5, a chip removal cylinder 6, a piston 61, an annular sleeve plate 7, a positioning piece 8, a mounting seat 81, a spring 82 and a baffle 83.

An embodiment is substantially as shown in fig. 1 to 6, and the embodiment is exemplified by clamping an inner ring of a hub bearing.

The clamping mechanism for the hub bearing hole site machining clamp comprises an annular seat 1 and a plurality of elastic clamping jaws 2 positioned in the annular seat 1, wherein the annular seat 1 is fixed on a workbench 100, each elastic clamping jaw 2 is fixedly provided with a clamping block 21 through a screw, and the clamping blocks 21 are used for clamping the periphery of a flange of a hub bearing inner ring 10. The elastic clamping jaw 2 is matched with the annular seat 1 through an inclined plane, the elastic clamping jaw 2 can move along the inclined plane, all the elastic clamping jaws 2 are fixed on the connecting ring 22, and the connecting ring 22 and the elastic clamping jaw 2 form a cylindrical claw; specifically, the barrel claw comprises an integrally formed connecting section, a plurality of thin-wall sections and a chuck located at the free end of the thin-wall sections, the thin-wall sections are arranged on one side, close to the center of the hub bearing inner ring 10, of the chuck, an inclined plane is formed on the periphery, far away from the center of the hub shaft, of the chuck, the inclined plane of the chuck is matched with the inclined plane on the annular seat 1, and the existence of the thin-wall sections enables the chuck on the barrel claw to have elasticity, so that the elastic clamping jaw 2 can conveniently move along the inclined plane when lifting. In this embodiment, the number of elastic clamping jaws 2 is 3, and the number of clamping blocks 21 is also 3, and the elastic clamping jaws are uniformly distributed circumferentially about the annular seat 1.

The support column 3 is fixedly arranged, the support column 3 is positioned below the flange of the hub bearing inner ring 10, and the support column 3 is used for supporting the flange; the support column 3 is hollow, the top and the bottom are through holes, the hole site of the hole on the flange which needs to be drilled is positioned in the hollow space of the support column 3, the bottom through hole of the support column 3 is a conical hole, and the hole diameter of the conical hole is smaller when the hole diameter of the conical hole is far away from the hub bearing inner ring 10.

Still including fixing the annular positioning seat 4 on workstation 100, be fixed with connecting rod 23 down on the go-between 22, connecting rod 23 vertical sliding connection is on annular positioning seat 4, in this embodiment, connecting rod 23 runs through annular positioning seat 4's bottom fixedly connected with arm-tie 5, through the vertical removal of arm-tie 5, drive connecting rod 23 along annular positioning seat 4 vertical steady removal, and then drive go-between 22 vertical removal, the vertical in-process of moving, elastic clamping jaw 2 moves along the inclined plane of annular seat 1 to realize that a plurality of elastic clamping jaw 2 draw close or keep away from each other.

The vertical sliding connection in middle part of annular positioning seat 4 has chip removal section of thick bamboo 6, the bottom of chip removal section of thick bamboo 6 runs through annular positioning seat 4, arm-tie 5 is fixed on the periphery of chip removal section of thick bamboo 6 bottom one section, be equipped with annular sleeve plate 7 between chip removal section of thick bamboo 6 top and the support column 3, annular sleeve plate 7 and support column 3 are all fixed on annular positioning seat 4 through the screw, the bits end processing of intaking of annular sleeve plate 7 has the guide inclined plane, annular sleeve plate 7 lid is on chip removal section of thick bamboo 6, annular sleeve plate 7 forms the shielding to chip removal section of thick bamboo, make things convenient for the sweeps to fall to chip removal section of thick bamboo 6 fast simultaneously, finally follow chip removal section of thick bamboo 6 discharge.

The chip cartridge 6 can be lifted and lowered, in particular: the annular positioning seat 4 is provided with a first runner and a second runner (shown by a dotted line in fig. 3), the piston 61 is integrally formed on the periphery of the middle part of the chip removal barrel 6, an annular groove is formed on the inner hole wall of the annular positioning seat 4, a cavity is formed between the annular groove and the chip removal barrel 6, the piston 61 is slidingly connected in the annular groove and divides the cavity into two independent chambers, the first runner is communicated with the upper chamber 401, and the second runner is communicated with the lower chamber 402; the oil pressure of the upper chamber 401 and the lower chamber 402 is controlled through the first flow channel and the second flow channel, so that the vertical movement of the chip removal cylinder 6 is controlled, and the lifting control of the chip removal cylinder 6 is realized through oil supply and oil discharge.

In this embodiment, in order to ensure the tightness of the cavity, sealing rings are installed above and below the annular groove, and in order to ensure the formation of the annular groove and the installation simplicity of the chip removal cylinder 6 with the piston 61, a detachable end cover 41 is installed at the bottom end of the annular positioning seat 4, the end cover 41 is sleeved outside the chip removal cylinder 6, and sealing rings are arranged between the end cover 41 and the annular positioning seat 4 and between the end cover 41 and the chip removal cylinder 6.

In this embodiment, in order to avoid the excessive downward movement of the chip removing cylinder 6, the clamping force of the clamping block 21 on the hub bearing inner ring 10 is excessive, the connecting ring 22 is provided with the limiting member 221, and the bottom of the limiting member 221 protrudes out of the bottom surface of the connecting ring 22 and can abut against the upper surface of the annular positioning seat 4, in this embodiment, the limiting member 221 is a limiting screw.

In order to facilitate the installation of more operation spaces of the connecting rod 23 and the connecting ring 22, waste scraps generated in the machining processes of drilling, tapping and the like of the hub bearing inner ring 10 fall on the clamping blocks 21 as little as possible, a plurality of weight reducing grooves 11 with upward openings are machined on the side wall of the annular seat 1, and the weight reducing grooves 11 and the elastic clamping jaws 2 are distributed in a staggered manner along the circumferential direction of the annular seat 1.

Still including restriction wheel hub bearing inner race 10 circumference pivoted setting element 8, setting element 8 horizontal sliding connection is on the mount pad 81 that is fixed to be equipped with, in this embodiment, mount pad 81 passes through the fix with screw on workstation 100, install spring 82 between mount pad 81 and the setting element 8, the flexible direction of spring 82 is radial parallel with wheel hub bearing inner race 10, spring 82 is used for ejecting setting element 8 towards wheel hub bearing inner race 10, specifically, be equipped with the blind hole along wheel hub bearing inner race 10 radially on the setting element 8, install the spring 82 that stretches out the blind hole in the blind hole, be fixed with baffle 83 on the mount pad 81, baffle 83 is just to the blind hole, spring 82 is located between baffle 83 and the blind hole bottom, setting element 8 horizontal sliding connection is on mount pad 81, the slip direction of setting element 8 is radial parallel with wheel hub bearing inner race 10.

The specific procedure of this embodiment is as follows:

before the hub bearing inner ring 10 is clamped, hydraulic oil is injected into the second flow channel, the first flow channel is used for discharging the hydraulic oil, so that the lower cavity 402 is filled with the oil to enable the chip removal barrel 6 to move upwards, the chip removal barrel 6 drives the elastic clamping jaw 2 to move upwards through the pull plate 5 and the connecting rod 23, and the clamping block 21 fixed on the elastic clamping jaw 2 moves outwards under the elastic action of the barrel jaw, so that a space is provided for placing the hub bearing inner ring 10.

The hub bearing inner ring 10 is placed on the support column 3 of each clamp, and before placing, the positioning piece 8 is controlled, so that the positioning piece 8 is far away from the center of the clamp, and the positioning piece 8 is prevented from interfering with the hub bearing inner ring 10.

Next, the hub bearing inner ring 10 to be processed is taken, the hub bearing inner ring 10 is placed on the support column 3, and then the control of the positioning piece 8 is released, so that the positioning piece 8 radially moves under the action of the spring 82 and abuts against the protruding position of the flange upper surface of the hub bearing inner ring 10.

Finally, hydraulic oil is injected into the first flow channel, the second flow channel is used for discharging hydraulic oil, so that the upper cavity 401 is filled with oil to drive the chip removal barrel 6 to move downwards, the chip removal barrel 6 moves downwards to drive the pull plate 5, the connecting rod 23 and the connecting ring 22 to synchronously move downwards, the elastic clamping jaw 2 moves along the inclined plane of the annular seat 1, and the clamping block 21 is close to the hub bearing inner ring 10 to clamp the hub bearing inner ring 10.

In the embodiment, the clamping blocks 21 for clamping the cylindrical section of the hub bearing inner ring 10 are changed to the periphery of the clamping flange, so that the cylindrical section of the hub bearing inner ring 10 is prevented from being damaged by clamping, the contact area during clamping is greatly increased, and the hub bearing inner ring 10 is ensured to have larger clamping force during flange machining; in addition, the flange of the hub bearing inner ring 10 is supported by the support column 3 in a ring shape at the bottom and is limited by the locating piece 8 from the circumference of the top, so that the accuracy of the hole site machining on the hub bearing flange can be ensured under the conditions of larger clamping force, bottom support and circumferential limitation of the top even though the hole site on the flange is eccentric.

In addition, most of the scraps generated in the machining process of the embodiment fall into the hollow space of the support column 3 from the machining hole position of the flange, then fall into the annular sleeve plate 7 from the conical hole at the bottom of the support column 3, finally the scraps are discharged from the chip removal barrel 6, part of the scraps fall into the space formed by the weight reduction groove 11, only a few of the scraps stay on the upper surface of the clamping block 21 and the upper surface of the flange of the hub bearing inner ring 10, so that the timely discharge of machining scraps is realized, and the probability that the scraps are accumulated on the clamping block 21 or the flange of the hub bearing inner ring 10 is reduced.

In addition, the setting of the positioning disc and the chip removal cylinder 6 in the embodiment ensures that the structure of the clamping mechanism is very compact on the basis of meeting the requirements of stable support, stable clamping and timely chip removal of workpieces, and is beneficial to installing more clamps on the workbench 100 of the existing numerical control machine tool so as to reduce the times of tool changing and improve the machining efficiency.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (10)

1. Clamping mechanism for hub bearing hole site adds clamping apparatus, including annular seat and a plurality of elasticity clamping jaw that are located annular seat, all be equipped with the grip block on every elasticity clamping jaw, elasticity clamping jaw passes through inclined plane cooperation with annular seat, and elasticity clamping jaw can follow inclined plane and remove its characterized in that: the clamping blocks are used for clamping the periphery of the flange of the hub bearing.

2. The clamping mechanism for a hub bearing hole site machining fixture according to claim 1, wherein: still include the support column, the support column is located hub bearing's flange below, and the support column is used for supporting the flange.

3. The clamping mechanism for a hub bearing hole site machining fixture according to claim 2, wherein: the support column is hollow, the top and the bottom of the support column are through holes, and the hole site needing to be perforated on the flange is located in the hollow space of the support column.

4. The clamping mechanism for a hub bearing hole site machining fixture according to claim 2, wherein: and a positioning piece for limiting the circumferential rotation of the hub bearing.

5. The clamping mechanism for a hub bearing hole site machining fixture as claimed in claim 4, wherein: the locating piece is located above the flange of the hub bearing, and the locating piece is horizontally and slidably connected to the fixedly arranged mounting seat.

6. A clamping mechanism for a hub bearing hole site machining fixture as claimed in claim 3, wherein: the bottoms of the elastic clamping jaws are fixed on the same connecting ring, and the elastic clamping jaw further comprises a fixed annular positioning seat, and the connecting ring is vertically and slidably connected to the annular positioning seat.

7. The clamping mechanism for a hub bearing hole site machining fixture as claimed in claim 6, wherein: and the connecting ring is provided with a limiting part, and the bottom of the limiting part protrudes out of the connecting ring and can prop against the annular positioning seat.

8. The clamping mechanism for a hub bearing hole site machining fixture according to claim 1, wherein: the side wall of the annular seat is provided with a plurality of weight reducing grooves.

9. The clamping mechanism for a hub bearing hole site machining fixture as claimed in claim 8, wherein: the weight reducing grooves and the elastic clamping jaws are distributed in a staggered mode along the circumferential direction of the hub bearing.

10. The clamping mechanism for a hub bearing hole site machining fixture according to claim 1, wherein: the clamping block is detachably connected to the elastic clamping jaw.