CN219094393U

CN219094393U - Cam lever special fixture

Info

Publication number: CN219094393U
Application number: CN202223400541.2U
Authority: CN
Inventors: 付丽秋; 王耀武; 黑玉龙; 刘炳鑫; 詹俊宇; 马春超; 殷嘉源; 黄颖; 胡宏亮; 朱瑶; 姚银艳; 孙艳龙; 任添义; 吕东; 宋宗荣
Original assignee: Qiqihar Heping Heavy Industry Group Co ltd
Current assignee: Qiqihar Heping Heavy Industry Group Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-30
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a special fixture for a cam rod, which comprises a bottom plate, a locating pin, a pressing block, a vertical plate and a hexagon head pressing screw, wherein a concave table is arranged on the right front side of the bottom plate; the bottom plate is provided with a shaft hole, the top of the shaft hole is provided with a convex round table, the positioning pin is a cylindrical stepped shaft with threads, the bottom of the positioning pin is a round shaft, the upper part of the round shaft is a shaft shoulder, the upper part of the shaft shoulder is a square shaft, the upper part of the square shaft is a threaded shaft, the round shaft of the positioning pin is connected with the bottom plate, and the top of the positioning pin is provided with a gasket and a nut. According to the utility model, the cam rod workpiece is fixed on the bottom plate through the locating pin and the nut, the V-shaped groove of the pressing block is used for locating the cam rod workpiece, the hole and the right-angle end of the workpiece blank are fully utilized for locating and fixing, and the problems that the cam rod workpiece cannot be clamped once and the production efficiency is low when the shape of the cam rod workpiece is machined are effectively solved.

Description

Cam lever special fixture

Technical Field

The utility model relates to a special clamp for a cam rod, and belongs to the technical field of machinery.

Background

In the field of machining of gun parts, the appearance of certain cam rod parts is complex, and when the appearance of the parts is machined, machining cannot be completed by one-time clamping, and multiple times of clamping are needed, so that the machining efficiency is greatly influenced; the existing machining mode is to clamp cam rod parts by using a simple parallel vice and clamping modes of a pressing plate and bolts, and the pressing plate is required to be continuously moved during machining, so that the production efficiency is extremely low, and the operation is troublesome.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the special clamp for the cam rod, which is used for fixing the cam rod workpiece on the bottom plate through the locating pin and the nut, locating the cam rod workpiece through the V-shaped groove of the pressing block, fully utilizing the hole and the right-angle end of the workpiece blank to locate and fix, and effectively solving the problems that the cam rod workpiece cannot be clamped once and the production efficiency is low when the shape of the cam rod workpiece is machined.

The technical scheme adopted for solving the technical problems is as follows: the special fixture for the cam rod comprises a bottom plate, a positioning pin, a pressing block, a vertical plate and a hexagonal head pressing screw, wherein a concave table is arranged on the right front side of the bottom plate, the vertical plate is fixed on the concave table and forms 45 degrees with the horizontal direction, the hexagonal head pressing screw is in threaded connection with the vertical plate, the pressing block is in floating connection with the front end of the hexagonal head pressing screw, and a V-shaped groove is formed in the front end of the pressing block; the center of the bottom plate is provided with a shaft hole, the top of the shaft hole is provided with a convex round table, the locating pin is a cylindrical threaded stepped shaft, the bottom of the locating pin is a round shaft, the upper part of the round shaft is a shaft shoulder, the upper part of the shaft shoulder is a square shaft, the upper part of the square shaft is a threaded shaft, the round shaft of the locating pin is matched and connected with the shaft hole of the bottom plate, and the top of the locating pin is connected with a gasket and a nut.

The beneficial effects of the utility model are as follows: the utility model solves the practical problems that a certain cam rod cannot be clamped once and the production efficiency is low when the shape is machined, and fully utilizes the hole and the right-angle end of the workpiece blank to position and fix;

the operation is convenient, and the production efficiency can be effectively improved; the machining precision is fully ensured through shaft hole positioning; the clamp avoids the traditional alignment process in the use process, and does not need repeated clamping.

Drawings

The utility model is further described below with reference to the drawings and the detailed description.

Fig. 1 is a schematic structural view of the present utility model.

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

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic structural view of the base plate.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a schematic view of the structure of the positioning pin.

Fig. 7 is a schematic structural view of the briquette.

Fig. 8 is a schematic view of a cam lever workpiece.

Fig. 9 is a schematic view of the clip in a state of use.

Reference numerals in the drawings:

1. the device comprises a bottom plate, 101, a concave table, 102, a shaft hole, 103, a convex circular table, 104, a U-shaped groove, 2, a gasket, 3, a nut, 4, a locating pin, 401, a circular shaft, 402, a shaft shoulder, 403, a square shaft, 404, a threaded shaft, 5, a pressing block, 501, a V-shaped groove, 6, a vertical plate, 7, a hexagon head pressing screw, 8 and a cam rod workpiece.

Detailed Description

As shown in fig. 1-9, a special fixture for cam rod comprises a bottom plate 1, a positioning pin 4, a pressing block 5, a vertical plate 6 and a hexagonal head pressing screw 7, wherein a step-shaped concave table 101 is arranged on the right front side of the bottom plate 1, the vertical plate 6 in the vertical direction is fixedly connected to the concave table 101 on the right front side of the bottom plate 1 and forms 45 degrees with the horizontal direction, the hexagonal head pressing screw 7 opposite to the vertical plate 6 is in threaded connection with the vertical plate 6, the back of the pressing block 5 is in floating connection with the front end of the hexagonal head pressing screw 7, the pressing block 5 is a rectangular block, and a V-shaped groove 501 is formed in the front end of the pressing block 5; the center part of the bottom plate 1 is provided with a shaft hole 102, the top of the shaft hole 102 is provided with a convex round platform 103, the positioning pin 4 is a cylindrical threaded stepped shaft, the bottom of the positioning pin 4 is a round shaft 401, a shaft shoulder 402 is arranged above the round shaft 401, a square shaft 403 is arranged above the shaft shoulder 402, a threaded shaft 404 is arranged above the square shaft 403, the round shaft 401 of the positioning pin 4 in the vertical direction is connected with the shaft hole 102 of the bottom plate 1 in a matched manner, and the top of the positioning pin 4 is connected with a gasket 2 and a nut 3.

The round shaft 401 of the locating pin 4 is used for being in fit connection with the base plate 1, the shaft shoulder 402 is used for spacing the base plate 1 from the cam rod workpiece 8, the square shaft 403 is used for being in fit connection with the cam rod workpiece 8, and the threaded shaft 404 is in threaded connection with the nut 3; the centers of two sides of the bottom plate 1 are provided with a U-shaped groove 104, a simple bolt and a pressing plate can be clamped on a milling machine workbench through the U-shaped groove 104, the V-shaped groove 501 of the pressing block 5 is matched with the right-angle end of the cam rod workpiece 8, the center part of the pressing block 5 is slotted according to the shape of the front end of the hexagon head pressing screw 7 and is matched with the hexagon head pressing screw 7 together to be used for positioning the cam rod workpiece 8; the convex round platform 103 avoids the cam rod workpiece 8 to be in direct contact with the bottom plate 1 in a large area, the bottom plate 1 right lower corner processing concave platform 101 can avoid the welding bead height to influence the placing plane of the workpiece when the vertical plate 6 is welded, the vertical plate 6 is a rectangular plate with a threaded hole and is used as a base of the hexagon head compression screw 7, the bottom plate 1 and the vertical plate 6 are made of 50 # steel, the positioning pin 4 is made of 40Cr material through a heat treatment process, and the positioning pin is made of the 40Cr material through the heat treatment process.

The using method of the clamp comprises the following steps:

1) During machining, the clamp is fixed on a milling machine workbench through the pressing plate and the bolts, so that the clamp is ensured to be parallel to the X axis of the milling machine;

2) The blank of the cam rod workpiece 8 passes through the positioning pin 4 and is fastened on the clamp in a half way through the gasket 2 and the nut 3;

3) Tightening the hexagon head compression screw 7 to enable the V-shaped groove 501 of the pressing block 5 to be tightly matched with the right angle position of the cam rod workpiece 8;

4) Tightening the nut 3 to fix the cam rod workpiece 8 on the fixture;

5) Processing the appearance;

6) And after the machining is finished, loosening the clamping nut 3, loosening the hexagon head pressing screw 7 and detaching the cam rod workpiece 8.

Claims

1. The utility model provides a cam lever special fixture which characterized in that: the novel hydraulic lifting device comprises a bottom plate (1), a positioning pin (4), a pressing block (5), a vertical plate (6) and a hexagonal head pressing screw (7), wherein a concave table (101) is arranged on the right front side of the bottom plate (1), the vertical plate (6) is fixedly connected to the concave table (101), the hexagonal head pressing screw (7) is in threaded connection with the vertical plate (6), and the pressing block (5) is in floating connection with the front end of the hexagonal head pressing screw (7); the center of the bottom plate (1) is provided with a shaft hole (102), the locating pin (4) is connected with the shaft hole (102) in a matching way, and the top of the locating pin (4) is connected with the gasket (2) and the nut (3).

2. The cam lever special fixture of claim 1, wherein: the pressing block (5) is a rectangular square, and a V-shaped groove (501) is arranged at the front end of the pressing block (5).

3. The cam lever special fixture of claim 1, wherein: the locating pin (4) is a cylindrical threaded stepped shaft, the bottom of the locating pin (4) is a circular shaft (401), a shaft shoulder (402) is arranged above the circular shaft (401), a square shaft (403) is arranged above the shaft shoulder (402), and a threaded shaft (404) is arranged above the square shaft (403).

4. The cam lever special fixture of claim 1, wherein: the top of the shaft hole (102) is provided with a convex round table (103).

5. The cam lever special fixture of claim 1, wherein: the centers of two sides of the bottom plate (1) are provided with a U-shaped groove (104).