CN215317032U

CN215317032U - Adjustable diameter type elliptic workpiece clamp

Info

Publication number: CN215317032U
Application number: CN202121154123.2U
Authority: CN
Inventors: 姜全喜
Original assignee: Wafangdian Wanxiang Forging Co ltd
Current assignee: Wafangdian Wanxiang Forging Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-12-28
Anticipated expiration: 2031-05-26

Abstract

The utility model provides a diameter-adjustable elliptic workpiece clamp, wherein one side of a fixed column is connected with a chuck of a machine tool, the end part of the other side of the fixed column is connected with a movable disc through a shaft, the movable disc and the fixed column are kept coincident and fixed by two fixed pins between the fixed column and the movable disc 2, the front of the movable disc is provided with a V-shaped slideway, two sides of the V-shaped slideway are provided with limit lugs, at least 10 round holes are uniformly processed on the V-shaped slideway at intervals, a sliding block is arranged on the V-shaped slideway, three bolt mounting holes with the same interval as the round holes are processed on the sliding block, the sliding block is fixed on the movable disc by penetrating through the bolt mounting holes and the round holes through bolts, and a clamping jaw is fixedly connected on the sliding block. The clamp disclosed by the utility model is simple in structure and universal, and can be suitable for machining workpieces with different diameters, so that the labor intensity of workers is reduced, the production efficiency is improved, and the production cost is saved.

Description

Adjustable diameter type elliptic workpiece clamp

Technical Field

The utility model belongs to the technical field of ring-shaped part clamps, and particularly relates to an oval workpiece clamp with an adjustable diameter.

Background

The annular workpiece machined and formed by the forging ring rolling machine is generally oval, the oval annular workpiece needs to be machined into a standard circular annular workpiece by finish machining through a machine tool, the workpiece and the clamp are relatively fixedly connected and are extruded and deformed by the clamp after being clamped by a universal three-jaw clamp of the machine tool, the workpiece is recovered and deformed after being detached, the machined workpiece is still oval, the oval workpiece cannot be corrected into the standard circular workpiece, the requirement can be met only by repeatedly turning and processing for multiple times, the machining difficulty is high, the product percent of pass is low, and the production efficiency is low.

Disclosure of Invention

The utility model solves the technical problem of providing an adjustable-diameter type oval workpiece clamp, which can be suitable for fixing workpieces of various specifications through a group of clamps and solves the problems of high processing difficulty, low product percent of pass and low production efficiency.

The technical scheme adopted by the utility model is as follows: the utility model provides an oval work piece holder of adjustable diameter formula, fixed column one side is connected with the lathe chuck, fixed column opposite side tip passes through the hub connection activity dish, it is fixed with the fixed column coincidence to make the activity dish keep through two fixed pins between fixed column and the activity dish 2, the positive processing of activity dish has the V-arrangement slide, V-arrangement slide both sides are spacing lug, even interval processing 10 at least round holes on the V-arrangement slide, install the slider on the V-arrangement slide, processing has the interval three bolt mounting hole the same with the round hole on the slider, bolt mounting hole and round hole run through the bolt with the slider be fixed in the activity dish on, the fixed connection clamping jaw on the slider.

Preferably, the number of the sliding blocks is 2, and the included angle between the two sliding blocks is 120 degrees.

Preferably, the distance between two adjacent circular holes is 3 cm.

Preferably, the rectangular block at the lower part of the clamping jaw is fixed in the clamping jaw mounting groove of the sliding block through a fastening bolt, the upper part of the clamping jaw is a cylinder, and a right-angle clamping groove is machined in the cylinder.

Preferably, the back of the movable disc is positioned on two sides of the fixed column, two positioning convex blocks parallel to the length direction of the fixed column are processed, a movable groove is formed between the two positioning convex blocks, and the contact surface of the fixed column and the movable disc is arranged in the movable groove.

The utility model has the beneficial effects that: the clamp disclosed by the utility model is simple in structure and universal, and can be suitable for machining workpieces with different diameters, so that the labor intensity of workers is reduced, the production efficiency is improved, and the production cost is saved.

Drawings

FIG. 1 is a schematic structural diagram of a front side of an adjustable diameter type oval workpiece holder;

FIG. 2 is a schematic view of a back side structure of an adjustable diameter type oval workpiece holder.

Reference numerals: 1-fixed column 2-movable disc 3-sliding block 4-clamping jaw 5-shaft 6-positioning pin 21-V-shaped slideway 22-positioning lug 23-movable groove 31-clamping jaw mounting groove 32-bolt mounting hole 41-right-angle clamping groove 211-round hole

Detailed Description

The utility model is further explained below with reference to the drawings. Fig. 1 is a front side of the structure and fig. 2 is a back side of the structure.

As shown in figures 1 and 2, the diameter-adjustable type oval workpiece fixture is characterized in that a fixed column 1 is a cuboid with a protruding clamping groove structure on the back side, the protruding clamping groove of the fixed column 1 is connected with a chuck of a machine tool, the end part of the front side of the fixed column 1 is connected with a movable disc 2 through a shaft 5, and the movable disc 2 can rotate around the shaft 5 in a small range relative to the fixed column 1. Make activity dish 2 and fixed column 1 keep the central line coincidence fixed through two fixed pins 6 between fixed column 1 and the activity dish 2, make the initial position of anchor clamps keep stable be convenient for install. The front of the movable disc 2 is processed with a V-shaped slide 21, two sides of the V-shaped slide 21 are limit lugs, the inner side lug is of an isosceles triangle structure and has a limit effect on the sliding blocks 3 on two sides, the outer side lug is of a long strip shape, and the distance between the inner side lug and the outer side lug is the width of the sliding block 3. The V-arrangement slide is located between the inside and outside both sides lug and protrusion in the plane of activity dish 2, evenly process 10 at least round holes 211 at the interval on the V-arrangement slide 21, install slider 3 on the V-arrangement slide 21, the back processing of slider 3 has the recess with V-arrangement slide 21 matched with, slider 3 can insert on the V-arrangement slide 21 and extend the direction slip that inside and outside both sides lug was injectd, it has the interval to run through the same three bolt mounting hole 32 with round hole 211 on the slider 3, bolt mounting hole 32 runs through with round hole 211 through the bolt with slider 3 is fixed in on the activity dish 2, the distance between the double-phase adjacent round hole 211 is 3cm, can be according to the relative position of work piece size adjustment slider 3. The clamping jaw 4 is fixedly connected to the sliding block 3, a rectangular block at the lower part of the clamping jaw 4 is fixed in the clamping jaw mounting groove 31 of the sliding block 3 through a fastening bolt, the upper part of the clamping jaw is a cylinder, and a right-angle clamping groove 41 is machined in the cylinder. Two positioning convex blocks 22 parallel to the length direction of the fixed column 1 are processed on two sides of the fixed column 1 on the back of the movable disc 2, a movable groove 23 is formed between the two positioning convex blocks 22, and the contact surface of the fixed column 1 and the movable disc 2 is arranged in the movable groove 23. The positioning lug 22 limits the rotation amplitude of the movable disk 2, so that the rotation amplitude of the movable disk 2 around the shaft 5 relative to the fixed column 1 is limited in the movable groove 23. The maximum amplitude of the rotation of the movable disc 2 around the shaft 5 is that one side of the fixed column 1 is pressed against the positioning lug 22. The structure prevents the clamp from rotating excessively under the action of gravity after being installed on a machine tool disc, and the movable disc 2 needs to be manually adjusted by a worker when a workpiece is clamped, so that the amplitude of the movable disc 2 is large, the movable disc is inconvenient to adjust, and the labor intensity of the worker is increased.

The number of the sliding blocks 3 arranged on each movable disk 2 is 2, and the included angle between the two sliding blocks 3 is 120 degrees. The three movable plates 2 are respectively connected with a machine tool chuck through three fixed columns 1 for use in a set. The included angle between two adjacent fixed columns 1 is 120 DEG

When the fixture is used, firstly, the position of the sliding block 3 is adjusted according to the diameter of a workpiece to be processed, the bolt mounting holes 32 and the round holes 211 are fixedly penetrated through bolts, then the three groups of fixtures are mounted on a machine tool disc, and the positions of the fixtures are adjusted according to the diameter of the workpiece to be processed and fixed; then the fixing pin 6 is pulled out, the workpiece is clamped on the clamping jaws 4 of the clamp, and the right-angle clamping grooves 41 of the 6 clamping jaws 4 are kept in contact with the workpiece; then starting the machine tool to process the workpiece, automatically aligning the movable disc 2 along with the rotation of the machine tool around the shaft 5 to keep the workpiece at the clamping side of the clamp in the original shape without extrusion deformation, and forming the processing side into a standard circular shape once according to the processing of the machine tool program. And after one side is machined, the workpiece is turned over and then clamped on the clamp to machine the other side. After the workpiece is disassembled, each movable disc 2 can be positioned through one fixing pin 6, and the workpiece can be clamped for the second time conveniently.

The workpiece can be processed and finished through twice processing without repeated processing, the production efficiency and the qualification rate of products are effectively improved, and the labor intensity of workers is greatly reduced.

The above-described embodiments of the present invention and the technical principles thereof are intended to be included within the scope of the present invention by any modification and equivalent transformation based on the technical solutions of the present invention.

Claims

1. The utility model provides an oval work piece holder of adjustable diameter formula which characterized in that: one side of the fixed column (1) is connected with a machine tool chuck, the end part of the other side of the fixed column (1) is connected with the movable disc (2) through a shaft (5), the movable disc (2) and the fixed column (1) are kept coincident and fixed by the central lines between the fixed column (1) and the movable disc (2) through two fixed pins (6), the front surface of the movable disc (2) is provided with a V-shaped slideway (21), two sides of the V-shaped slideway (21) are provided with limit lugs, at least 10 round holes (211) are uniformly processed on the V-shaped slideway (21) at intervals, a slide block (3) is arranged on the V-shaped slide way (21), three bolt mounting holes (32) with the same interval as the round holes (211) are processed on the slide block (3), bolt mounting hole (32) run through with round hole (211) through the bolt with slider (3) be fixed in activity dish (2) on, fixed connection clamping jaw (4) on slider (3).

2. The adjustable diameter elliptical workpiece holder of claim 1 wherein: the number of the sliding blocks (3) is 2, and the included angle between the two sliding blocks (3) is 120 degrees.

3. The adjustable diameter elliptical workpiece holder of claim 1 wherein: the distance between the two adjacent round holes (211) is 3 cm.

4. The adjustable diameter elliptical workpiece holder of claim 1 wherein: the clamping jaw is characterized in that a rectangular block at the lower part of the clamping jaw (4) is fixed in a clamping jaw mounting groove (31) of the sliding block (3) through a fastening bolt, the upper part of the clamping jaw (4) is a cylinder, and a right-angle clamping groove (41) is machined in the cylinder.

5. The adjustable diameter elliptical workpiece holder of claim 1 wherein: the back of the movable disc (2) is located on two sides of the fixed column (1) and is provided with two positioning convex blocks (22) parallel to the length direction of the fixed column (1), a movable groove (23) is formed between the two positioning convex blocks (22), and the contact surface of the fixed column (1) and the movable disc (2) is arranged in the movable groove (23).