CN210115473U

CN210115473U - Internal star wheel clamp

Info

Publication number: CN210115473U
Application number: CN201920654205.XU
Authority: CN
Inventors: 李柯; 朱明杰; 朱跃
Original assignee: Zhejiang Kangpurui Automobile Parts Co Ltd
Current assignee: Zhejiang Kangpurui Automobile Parts Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-02-28
Anticipated expiration: 2029-05-08

Abstract

The utility model provides an interior star gear anchor clamps. It has solved the inconvenient fixed problem of interior star gear among the prior art. The inner star wheel clamp comprises a chuck, at least two clamping jaws distributed along the circumferential direction of the chuck and a backer in an area surrounded by the clamping jaws, wherein the backer supports the inner hole edge of an inner star wheel, the clamping jaws clamp the end profile of a convex tooth of the inner star wheel, the clamping jaws are provided with clamping jaws capable of pressing at least two convex teeth, and the clamping jaws are connected to the chuck in a lifting manner along the axial direction of the chuck; and a telescopic expansion end head extending into the inner hole of the inner star wheel is arranged at the center of the backer. The utility model provides a chuck of current lathe can not reliably fix the problem that can not conveniently shift with the work piece to interior star gear. Can facilitate the loading and unloading of the workpiece.

Description

Internal star wheel clamp

Technical Field

The utility model belongs to a lathe positioning fixture device, especially one kind is used for the positioner of star gear in the ball cage.

Background

With the rapid development of the automobile industry, the constant velocity universal joint occupies an important position in the automobile drive shaft industry due to the unique equal angular velocity torque transmission and excellent mechanical performance, and the quality of the processing and manufacturing quality of the constant velocity universal joint is related to the service performance and the service life of a product.

The inner star wheel is called a star sleeve, and when the inner star wheel of the automobile ball cage is machined by a lathe, the inner star wheel needs to be stably positioned, but because the shape of the inner star wheel is special, the surface of a workpiece is a spherical surface and is provided with a plurality of grooves, and the chuck on the existing lathe cannot be reliably fixed. And the workpieces are inconvenient to install and transfer. For the four-channel internal star wheel, the radian of the channel is large, so that the clamping is convenient to clamp on the channel, but for the eight-channel internal star wheel, the clamping is unchanged on the channel, the clamping beat is slow, and the error risk is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided an interior star gear anchor clamps, the shape of star gear in this positioner fully combines, and the location is convenient, makes things convenient for the last unloading of interior star gear.

The purpose of the utility model can be realized by the following technical proposal: an inner star wheel clamp comprises a chuck, at least two clamping jaws distributed along the circumferential direction of the chuck and a backer in an area surrounded by the clamping jaws, wherein the backer supports the inner hole edge of an inner star wheel, the clamping jaws clamp the end profile of a convex tooth of the inner star wheel, the clamping jaws are provided with clamping jaws capable of pressing the convex teeth of the two inner star wheels at least, and the clamping jaws are connected to the chuck in a lifting manner along the axial direction of the chuck; the mountain-leaning center department is provided with the flexible inflation end that stretches into the interior star gear hole, flexible inflation end includes the sleeve pipe and the body of rod of sliding fit in the sleeve pipe, the connecting rod of the equal hinged joint of body of rod tip and sleeve pipe tip circumference two at least symmetries, the tip hinged joint of the connecting rod on the body of rod and the sleeve pipe, the body of rod is by the removal of the relative interior star gear hole axis direction of telescopic machanism control.

When the clamping jaw is used, a workpiece to be fixed is supported on the backrest, each clamping jaw is pressed on the convex tooth, and then the clamping jaw descends to press the peripheral surface of the convex tooth so as to fix the inner star wheel on the chuck. The existing chuck is radially locked and fixed, and the technical scheme is axially moved and locked. The clamping jaw passes through adjusting bolt to be connected on the female seat of clamping jaw, and the female seat of clamping jaw passes through the bolt fastening on the chuck, makes the clamping jaw relative chuck at chuck axial displacement through rotating adjusting bolt. Of course, other adjustment means may be used instead of the adjusting screw for adjustment.

The hinge joint of the connecting rod stretches out and draws back in the opposite rod body strength direction through the movement of the control rod body relative to the sleeve, when the rod body end is close to the sleeve end, the hinge joint is farthest away from the rod body, namely, the hinge joint is outwards expanded, so that the inner hole wall of the inner star wheel is supported and fixed, the inner star wheel is fixed, the clamping jaw is further operated to fix the inner star wheel, when the blanking is needed, the clamping jaw is opened, then the rod body end is far away from the sleeve end, so that the hinge joint is far away from the inner hole wall of the inner star wheel, and the inner star wheel is taken down.

In the internal star wheel clamp, the chuck is also provided with a positioning column positioned between the two convex teeth.

In foretell interior star gear anchor clamps, be provided with the electro-magnet on the location backer, live the work piece through magnetic adsorption to in interim location, convenient further operation.

In the internal star wheel clamp, the rod body and the sleeve are respectively controlled by the telescopic mechanisms to move in the axial direction relative to the internal star wheel inner hole, so that the telescopic expansion end head is stretched in and moved out.

In the internal star wheel clamp, the sleeve is provided with a sliding groove along the length direction, the rod body is fixedly provided with a sliding block in sliding fit in the sliding groove, and the telescopic mechanism controls the sliding of the sliding block in the sliding groove, so that the rod body moves relative to the sleeve.

Compared with the prior art, this interior star gear anchor clamps have following advantage:

the utility model provides a chuck of current lathe can not reliably fix the problem that can not conveniently shift with the work piece to interior star gear. Can facilitate the loading and unloading of the workpiece.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the present invention after the inner star wheel is installed;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a schematic view of the working state of the telescopic expansion end of the present invention.

In the figure, a clamping jaw 1, a backer 2, an inner star wheel 3, an inner star wheel convex tooth 301, an inner star wheel inner hole 302, a chuck 4, a sleeve 5, a rod body 6, a sliding groove 601, a connecting rod 7, a sliding block 701, a rod body cylinder 8, a sleeve cylinder 9, a positioning column 10, an electromagnet 11, a clamping jaw female seat 12 and an adjusting bolt 13.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, 2, 3 and 4, an inner star wheel clamp comprises a chuck, three clamping jaws 1 distributed along the circumferential direction of the chuck and a backer 2 in an area surrounded by the clamping jaws, wherein the backer supports the edge of an inner hole of an inner star wheel 3, the clamping jaws clamp the end profile of a convex tooth 301 of the inner star wheel, the clamping jaws are provided with arc-shaped clamping jaws capable of pressing at least two convex teeth, and the clamping jaws are connected to the chuck 4 in a way of being lifted along the axial direction of the chuck; the department is provided with the flexible inflation end that stretches into interior star gear hole 302 at the backer center, flexible inflation end includes sleeve pipe 5 and the body of rod 6 of sliding fit in the sleeve pipe, body of rod tip leads to the connecting rod 7 of two at least symmetries of the equal hinged joint of circumference with the sleeve pipe tip, the tip hinged joint of the connecting rod on the body of rod and the sleeve pipe to the realization stretches into and shifts out flexible inflation end, it has along length direction's spout 601 to open on the sleeve pipe, is fixed with the slider 701 of sliding fit in the spout on the body of rod, the slip of telescopic machanism control slider in the spout. The rod body and the sleeve are controlled to move in the axial direction of the inner hole of the inner star wheel by a rod body cylinder 8 and a sleeve cylinder 9 respectively.

The chuck is also provided with a positioning column 10 positioned between the two convex teeth to prevent the inner star wheel from rotating.

When the clamping jaw is used, a workpiece to be fixed is supported on the backrest, each clamping jaw is pressed on the convex tooth, and then the clamping jaw descends to press the peripheral surface of the convex tooth so as to fix the inner star wheel on the chuck. The existing chuck is radially locked and fixed, and the technical scheme is axially moved and locked. The clamping jaw passes through adjusting bolt 13 to be connected on the female seat 12 of clamping jaw, and the female seat of clamping jaw passes through the bolt fastening on the chuck, makes the clamping jaw relative chuck at chuck axial displacement through rotating adjusting bolt. Of course, other adjustment means may be used instead of the adjusting screw for adjustment.

In the internal star wheel clamp, the positioning backer is provided with the electromagnet 11, and a workpiece is adsorbed by magnetism so as to be conveniently positioned temporarily and facilitate further operation.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although some terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. An inner star wheel clamp comprises a chuck, at least two clamping jaws distributed along the circumferential direction of the chuck and a backer in an area surrounded by the clamping jaws, wherein the backer supports the inner hole edge of an inner star wheel, and the clamping jaws clamp the end profile of a convex tooth of the inner star wheel; the mountain-leaning center department is provided with the flexible inflation end that stretches into the interior star gear hole, flexible inflation end includes the sleeve pipe and the body of rod of sliding fit in the sleeve pipe, the connecting rod of the equal hinged joint of body of rod tip and sleeve pipe tip circumference two at least symmetries, hinged joint is passed through with the tip of the connecting rod on the sleeve pipe to the body of rod, the body of rod is by the removal of the relative interior star gear hole axis direction of telescopic machanism control.

2. An internal starwheel clamp as claimed in claim 1 wherein the chuck is further provided with locating posts positioned between the two teeth.

3. The in-star clamp of claim 1, wherein the backer has an electromagnet disposed thereon.

4. The besides-star clamp of claim 1, wherein the rod and the sleeve are respectively controlled by a telescoping mechanism to move in a direction relative to an axis of the inner star hole.

5. The besides-star clamp of claim 4, wherein the sleeve has a sliding slot along a length direction, the rod body has a sliding block fixed thereon, the sliding block is slidably fitted in the sliding slot, and the telescoping mechanism controls the sliding of the sliding block in the sliding slot.