CN211727553U - Improve and add type wheel hub lathe processing positioning fixture - Google Patents

Abstract

The utility model discloses an improved reinforced wheel hub lathe processing positioning fixture in the field of wheel hub processing and manufacturing, which comprises a chuck arranged on a lathe, wherein a plurality of claws are arranged on the chuck at intervals along the circumferential direction, an end face positioning disc is coaxially arranged at one end of the chuck close to a wheel hub, the end face positioning disc is provided with a plurality of groups of positioning holes at uniform intervals along the circumferential direction, each group of positioning holes comprises inner side positioning holes, middle positioning holes and outer side positioning holes which are arranged in a staggered mode along the circumferential direction, the distance between each inner side positioning hole and the center of the end face positioning disc is equal, the distance between each middle positioning hole and the center of the end face positioning disc is equal, the distance between each outer side positioning hole and the center of the end face positioning disc is equal, a plurality of ejecting blocks are arranged on the surface of the end face positioning disc at intervals along the circumferential direction, each ejecting block is fixed with the corresponding positioning hole, annular steps are arranged on the inner periphery of a wheel rim of a. The utility model discloses can firmly press from both sides wheel hub tightly fixedly through kicking block cooperation jack catch, positioning accuracy improves.

Description

Improve and add type wheel hub lathe processing positioning fixture

Technical Field

The utility model belongs to wheel hub processing manufacturing field, in particular to improve reinforcement type wheel hub lathe processing positioning fixture.

Background

In the prior art, a hub is a cylindrical metal part with a tire inner contour supporting the tire and a center arranged on a shaft, and is called a rim, a steel ring, a wheel and a tire bell, and the hub is of various types according to the diameter, the width, the forming mode and the materials. The gravity casting method is to pour the aluminum alloy solution into the mold by utilizing gravity, and the aluminum alloy solution is subjected to surface treatment by a machine tool after being formed, so that the production can be completed, the manufacturing process is simple, a precise casting process is not needed, the cost is low, and the production efficiency is high. The low-pressure precision casting method is precision casting under the low pressure of 0.1Mpa, and the casting mode has good formability, clear outline, uniform density and smooth surface, can achieve high strength and light weight, and can control the cost. When production wheel hub, from the blank to the finished product, it is an important process to carry out lathe work to wheel hub especially, and when current lathe work wheel hub, adopt a plurality of jack catchs that set up along the even interval of circumference to block wheel hub's periphery, each jack catch can be simultaneously along wheel hub radial movement, realizes wheel hub's material loading and unloading, its weak point lies in: the axis direction of wheel hub lacks the locating surface, can't tightly press from both sides wheel hub tightly fixed, and wheel hub can take place to rock.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an improve reinforcement type wheel hub lathe processing positioning fixture can be fixed the wheel hub terminal surface through the kicking block, and the cooperation jack catch is firmly pressed from both sides wheel hub tightly fixedly, and positioning accuracy improves.

The purpose of the utility model is realized like this: an improved reinforced hub lathe processing positioning fixture comprises a chuck arranged on a lathe, wherein a plurality of clamping jaws capable of moving along the radial direction of the chuck are uniformly arranged on the chuck at intervals in the circumferential direction, the end parts of the clamping jaws are pressed on the hub, the axial lines of the hub and the chuck are overlapped, an end face positioning disc is coaxially arranged at one end, close to the hub, of the chuck, a plurality of groups of positioning holes are uniformly arranged on the end face positioning disc at intervals in the circumferential direction, each group of positioning holes comprises an inner side positioning hole, a middle positioning hole and an outer side positioning hole which are staggered in the circumferential direction, the distances from the inner side positioning hole, the middle positioning hole and the outer side positioning hole to the center of the end face positioning disc are sequentially increased in an increasing mode, the distances from the inner side positioning holes to the center of the end face positioning disc are equal, the surface of the end face positioning disc is provided with a plurality of jacking blocks at uniform intervals along the circumferential direction, each jacking block is fixed with a corresponding positioning hole through a fastener, an annular step is arranged on the inner periphery of a rim of the hub, and the jacking blocks are abutted against the end faces of the steps.

The utility model discloses the during operation leans on the kicking block with wheel hub's interior step terminal surface top earlier, then removes the jack catch again and makes the jack catch die fixed with wheel hub periphery card, through fixing a position for wheel hub terminal surface direction, and the jack catch that deuterogamies firmly presss from both sides tight fixed with wheel hub, and positioning accuracy improves. Compared with the prior art, the beneficial effects of the utility model reside in that: according to the hubs with different model sizes, the position of the top block can be adjusted in an adaptive mode, and the inner side positioning hole, the middle positioning hole and the outer side positioning hole correspond to the hubs with three different model sizes, namely small, medium and large.

As a further improvement, the jack catch compresses tightly the portion front end and is connected with removable clamping head including compressing tightly portion, guide part and connecting portion, compresses tightly overhead annular flange assorted recess of offering with the wheel hub periphery, the jack catch connecting portion be located the chuck rear side and with chuck swing joint. The compressing head is fixed with the clamping jaws through fasteners and can be replaced corresponding to hubs of different models and sizes.

As a further improvement, the chuck is provided with the guide holder corresponding to the jack catch, and the guide way has been seted up at the guide holder middle part, and the jack catch guide part is vertical to pass the guide way downwards and with guide holder swing joint. The guide seat plays a guiding role in the movement of the clamping jaw.

As a further improvement, the end face positioning plate comprises a central plate body and an outer ring body, and a plurality of radial reinforcing ribs are arranged between the central plate body and the outer ring body along the circumferential interval.

As a further improvement of the utility model, the kicking block is L shape, and the kicking block outside corresponds the interior week setting of wheel hub rim. The ejector block is fixed with the end face positioning plate through a fastener, and the installation and the disassembly are convenient.

As a further improvement of the utility model, the jack catch is provided with threely, and the kicking block is provided with four.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a schematic structural view of each positioning hole on the end face positioning plate.

Fig. 3 is a sectional view taken along line CC of fig. 1.

Fig. 4 is an enlarged view of a portion a in fig. 3.

The clamping device comprises a chuck 1, clamping jaws 2, a pressing part 2a, a guiding part 2b, a connecting part 2c, a wheel hub 3, a wheel rim 3a, a positioning disc 4 end face, a central disc body 4a, an outer ring body 4b, reinforcing ribs 4c, positioning holes 5 inside, positioning holes 6 in the middle, positioning holes 7 outside, fasteners 8, steps 9, a pressing head 10, a flange 11, a guide seat 12, a guide groove 12a and a top block 13.

Detailed Description

As shown in fig. 1-4, an improved reinforced hub lathe machining positioning fixture comprises a chuck 1 arranged on a lathe, a plurality of jaws 2 capable of moving along the radial direction of the chuck 1 are uniformly arranged on the chuck 1 at intervals along the circumferential direction, the end parts of the jaws 2 are pressed on a hub 3, the axes of the hub 3 and the chuck 1 are overlapped with each other, an end face positioning disk 4 is coaxially arranged at one end of the chuck 1 close to the hub 3, a plurality of groups of positioning holes are uniformly arranged on the end face positioning disk 4 at intervals along the circumferential direction, each group of positioning holes comprises inner side positioning holes 5, middle positioning holes 6 and outer side positioning holes 7 which are staggered along the circumferential direction, the distances from the inner side positioning holes 5, the middle positioning holes 6 and the outer side positioning holes 7 to the center of the end face positioning disk 4 are sequentially increased in an increasing manner, the distances from the inner side positioning holes 5 to the center, the distance between each outer side positioning hole 7 and the center of the end face positioning disc 4 is equal, a plurality of jacking blocks 13 are uniformly arranged on the surface of the end face positioning disc 4 at intervals along the circumferential direction, each jacking block 13 is fixed with a corresponding positioning hole through a fastener 8, an annular step 9 is arranged on the inner periphery of a rim 3a of the hub 3, and the jacking blocks 13 are abutted against the end face of the step 9. The jack catch 2 is including compressing tightly portion 2a, guide part 2b and connecting portion 2c, and jack catch 2 compresses tightly 2a front end and is connected with removable pressure head 10, offers on the pressure head 10 with the annular flange 11 assorted recess of 3 peripheries of wheel hub, jack catch 2 connecting portion 2c are located chuck 1 rear side and with chuck 1 swing joint. The chuck 1 is provided with a guide seat 12 corresponding to the jaw 2, the middle part of the guide seat 12 is provided with a guide groove 12a, and the guide part 2b of the jaw 2 vertically penetrates through the guide groove 12a downwards and is movably connected with the guide seat 12. The end face positioning disc 4 comprises a central disc body 4a and an outer ring body 4b, and a plurality of radial reinforcing ribs 4c are arranged between the central disc body 4a and the outer ring body 4b at intervals along the circumferential direction. The top block 13 is L-shaped, and the outer side of the top block 13 is arranged corresponding to the inner periphery of the rim 3a of the hub 3. The clamping jaws 2 are three, and the jacking blocks 13 are four.

The utility model discloses the during operation leans on kicking block 13 with 9 terminal surface tops of interior step of wheel hub 3 earlier, then removes jack catch 2 again and makes jack catch 2 die wheel hub 3 periphery card fixed, through fixing a position for 3 terminal surface directions of wheel hub, deuterogamy jack catch 2 firmly presss from both sides tightly fixed with wheel hub 3, and positioning accuracy improves. The utility model has the advantages that: according to the hubs 3 with different model sizes, the position of the top block 13 can be adjusted in an adaptive manner, and the inner side positioning hole 5, the middle positioning hole 6 and the outer side positioning hole 7 correspond to the hubs 3 with three different model sizes, namely small, medium and large.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims (6)

1. An improved reinforced hub lathe processing positioning fixture comprises a chuck arranged on a lathe, wherein a plurality of clamping jaws capable of moving along the radial direction of the chuck are uniformly arranged on the chuck at intervals along the circumferential direction, the end parts of the clamping jaws are pressed on a hub, and the axial lines of the hub and the chuck are mutually overlapped, and the improved reinforced hub lathe processing positioning fixture is characterized in that an end face positioning disc is coaxially arranged at one end of the chuck close to the hub, a plurality of groups of positioning holes are uniformly arranged on the end face positioning disc at intervals along the circumferential direction, each group of positioning holes comprises an inner side positioning hole, a middle positioning hole and an outer side positioning hole which are staggered along the circumferential direction, the distances from the inner side positioning hole, the middle positioning hole and the outer side positioning hole to the center of the end face positioning disc are sequentially increased in an increasing manner, the distances from the inner side positioning holes to the center, the surface of the end face positioning disc is provided with a plurality of jacking blocks at uniform intervals along the circumferential direction, each jacking block is fixed with a corresponding positioning hole through a fastener, an annular step is arranged on the inner periphery of a rim of the hub, and the jacking blocks are abutted against the end faces of the steps.

2. The improved reinforced hub lathe machining positioning fixture is characterized in that the clamping jaws comprise pressing portions, guide portions and connecting portions, replaceable pressing heads are connected to the front ends of the clamping jaw pressing portions, grooves matched with annular flanges on the periphery of a hub are formed in the pressing heads, and the clamping jaw connecting portions are located on the rear side of the chuck and movably connected with the chuck.

3. The improved reinforced hub lathe machining positioning fixture as claimed in claim 2, wherein the chuck is provided with guide seats corresponding to the jaws, guide grooves are formed in the middle of the guide seats, and the jaw guide portions vertically and downwardly penetrate through the guide grooves and are movably connected with the guide seats.

4. The improved reinforced hub lathe positioning fixture as claimed in any one of claims 1 to 3, wherein the end positioning plate comprises a central plate body and an outer ring body, and a plurality of radial ribs are circumferentially spaced between the central plate body and the outer ring body.

5. The improved reinforced hub lathe positioning fixture as claimed in any one of claims 1 to 3, wherein the top block is L-shaped, and the outer side of the top block is arranged corresponding to the inner periphery of the hub rim.

6. An improved reinforced hub lathe positioning fixture as claimed in any one of claims 1 to 3, wherein there are three jaws and four top blocks.

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