CN204235215U - A kind of fixture of fixing E-type bolt - Google Patents

Abstract

The utility model discloses a fixture for fixing E-shaped bolts, which belongs to a fixture, and its structure includes an upper splint, a lower splint, a guiding return device and a pressing device. The compression device includes a compression stud and a compression nut. The lower end of the compression stud is fixed to the lower splint, the upper end passes through the upper splint, and is tightened by the compression nut. The symmetrical inner sides of the upper splint and the lower splint are respectively There is a clamping contact surface in contact with the E-bolt, and the lower clamping plate is connected with the workbench through the connecting device. The utility model has the advantages of convenient taking and placing of the E-shaped bolts, accurate positioning, and firm and reliable clamping, which not only greatly improves the labor production efficiency, but also ensures the product quality, and the product qualification rate is over 98%. The clamping effect is good, the manufacturing cost is low, and the service life is long; by replacing the upper splint and the lower splint, it can adapt to the processing of different types of E-bolts.

Description

A fixture for fixing E-type bolts

technical field

The utility model relates to a clamp, in particular to a clamp for fixing E-shaped bolts.

Background technique

The E-type bolts have 3 head bolts, which are arranged in the same E-shaped center distance on a straight line. The three head bolts were originally processed on an ordinary lathe, using a four-jaw chuck. During processing, each adjustment center distance is adjusted one by one, and now it is turned into Polish the rod, and then thread it.

The problems with this processing method are:

1. Due to the need to adjust one by one, it takes a long time and the production efficiency is very low.

2. The center distance of the three head bolts has a large error during processing.

3. Due to the protruding part of the bolt shape, it is difficult to clamp.

Currently, there is no good solution.

Utility model content

The technical task of the utility model is to provide a fixture for fixing E-bolts in view of the deficiencies in the prior art above. , which not only greatly improves the labor production efficiency, but also ensures the product quality, and the qualified rate of the product is over 98%; the fixture structure is simple, compact and practical, the clamping effect is good, the manufacturing cost is low, and the service life is long; The splint can adapt to the processing characteristics of different types of E-bolts.

The technical solution adopted by the utility model to solve its technical problems is: it includes an upper splint, a lower splint, a guide return device and a pressing device, the upper splint is arranged on the upper part of the lower splint, and the upper splint and the lower splint A guide return device and a pressing device are arranged between them. The guide return device includes two symmetrically arranged on the left and right ends of the upper splint and the lower splint. The described pressing device is arranged on the upper splint and the lower splint In the middle part, the compression device includes a compression stud and a compression nut. The lower end of the compression stud is fixed to the lower splint, and the upper end passes through the upper splint and is fastened by the compression nut. The symmetrical inner sides of the upper splint and the lower splint are respectively provided with clamping contact surfaces that are in contact with the E-bolts. The clamping contact surfaces match the outer surfaces of the E-bolts, and the lower splint is connected to the workbench through a connecting device. .

The connecting device includes four fastening bolts of the lower splint, and the four fastening bolts of the lower splint are divided into two groups and arranged symmetrically at the left and right ends of the lower splint.

The guide return device includes a guide post and a spring, the lower end of the guide post is fixedly connected to the lower splint, the upper end passes through the upper splint, and a through hole is arranged on the upper splint, and the guide post passes through the through hole respectively, and is connected with the The through holes are clearance fit, and a spring is arranged on the guide post between the upper splint and the lower splint.

Compared with the prior art, a fixture for fixing E-bolts of the utility model has the following outstanding beneficial effects: E-bolts are convenient to take and place, accurate in positioning, firm and reliable in clamping, and greatly improve labor production efficiency. The product quality is also guaranteed, and the qualified rate of the product is over 98%; the fixture structure is simple, compact and practical, the clamping effect is good, the manufacturing cost is low, and the service life is long; by changing the upper splint and the lower splint, it can be adapted to different types of E-bolts Processing and other characteristics.

Description of drawings

Accompanying drawing 1 is a kind of front view structure schematic diagram of the fixture of fixing E-bolt;

Accompanying drawing 2 is a kind of top view structure schematic diagram of the fixture of fixing E-bolt;

Accompanying drawing 3 is D-D sectional view shown in Fig. 1;

Accompanying drawing 4 is the E-E sectional view shown in Fig. 2;

Accompanying drawing 5 is the F-F sectional view shown in Fig. 2;

Explanation of reference signs: 1, upper splint, 2, lower splint, 3, guide return device, 31, guide post, 32, spring, 4, hold down device, 41, hold down stud, 42, hold down nut, 5. Clamping contact surface, 6. Connecting device, 61. Fastening bolts of the lower plywood, 7. Workbench.

Detailed ways

A fixture for fixing E-bolts of the present invention will be described in detail below with reference to accompanying drawings 1 to 5 of the specification.

A fixture for fixing E-shaped bolts of the utility model, its structure includes an upper splint 1, a lower splint 2, a guiding return device 3 and a pressing device 4, the upper splint 1 is arranged on the upper part of the lower splint 2, and the Between the upper splint 1 and the lower splint 2, a guide return device 3 and a pressing device 4 are provided, and the guide return device 3 includes two, which are symmetrically arranged at the left and right ends of the upper splint 1 and the lower splint 2, The pressing device 4 is arranged in the middle of the upper splint 1 and the lower splint 2. The pressing device 4 includes a pressing stud 41 and a pressing nut 42. The lower end of the pressing stud 41 is connected to the lower splint. 2 phases are fixed, the upper end passes through the upper splint 1, and is fastened by a compression nut 42, and the symmetrical inner sides of the upper splint 1 and the lower splint 2 are respectively provided with clamping contact surfaces 5 that are in contact with the E-shaped bolts. The clamping contact surface 5 matches the outer surface of the E-bolt to ensure the levelness of the E-bolt during clamping and the firm clamping during processing to ensure the processing quality. The lower splint 2 is connected to the workbench through the connecting device 6 .

The connecting device 6 includes four fastening bolts 61 of the lower splint. The four fastening bolts 61 of the lower splint are divided into two groups and arranged symmetrically at the left and right ends of the lower splint 2 . The splint 2 can be conveniently loaded and unloaded to replace different types of tooling and adapt to the processing of different types of E-bolts.

The guide return device 3 includes a guide post 31 and a spring 32, the lower end of the guide post 31 is fixedly connected to the lower splint 2, the upper end passes through the upper splint 1, and the upper splint 1 is provided with a through hole, the guide post 31 The springs 32 are arranged on the guide pillars 31 between the upper clamping plate 1 and the lower clamping plate 2 respectively through the through holes and in clearance fit with the through holes. The guide post 31 plays a guiding role for the downward movement of the upper clamping plate 1, and a spring 32 is arranged between the upper clamping plate 1 and the lower clamping plate 2. When taking the workpiece, the upper clamping plate 1 can be returned to facilitate the removal of the workpiece.

The lower clamping plate 2 and the workbench 7 of the machine tool are connected by four lower clamping plate fastening bolts 61, so that the whole fixture can walk forward and backward with the machine tool workbench 7.

The clamping contact surface 5 where the upper clamping plate 1 and the lower clamping plate 2 are in contact with the E-bolts is processed according to their external dimensions to ensure the levelness of the E-bolts during clamping and the firm clamping during processing to ensure the processing quality.

When the fixture clamps the E-bolt of the workpiece, first put the E-bolt into the cavity of the lower splint 2, and then tighten the compression nut 42, the upper splint 1 moves down along the guide post 31, and its cavity is on the top of the E-bolt. Surface contact to complete the clamping action. After the processing is completed, the compression nut 42 is loosened, and the upper clamping plate 1 moves upward under the push of the reaction force of the spring 32, and the workpiece is released, and the workpiece is taken out to complete a processing process.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

Claims (3)

1. A fixture for fixing E-type bolts, characterized in that: comprise an upper clamping plate, a lower clamping plate, a guide return device and a pressing device, the upper clamping plate is arranged on the top of the lower clamping plate, and the upper clamping plate and the lower clamping plate A guide return device and a pressing device are arranged between them. The guide return device includes two symmetrically arranged on the left and right ends of the upper splint and the lower splint. The described pressing device is arranged on the upper splint and the lower splint In the middle part, the compression device includes a compression stud and a compression nut. The lower end of the compression stud is fixed to the lower splint, and the upper end passes through the upper splint and is fastened by the compression nut. The symmetrical inner sides of the upper splint and the lower splint are respectively provided with clamping contact surfaces that are in contact with the E-bolts. The clamping contact surfaces match the outer surfaces of the E-bolts, and the lower splint is connected to the workbench through a connecting device. . 2. A clamp for fixing E-shaped bolts according to claim 1, characterized in that: said connecting device comprises four lower splint fastening bolts, and said four lower splint fastening bolts are divided into two groups, It is arranged symmetrically at the left and right ends of the lower splint. 3. A fixture for fixing E-bolts according to claim 1, wherein the guide return device includes a guide post and a spring, the lower end of the guide post is fixedly connected to the lower splint, and the upper end is worn through Through the upper splint, through holes are arranged on the upper splint, and the guide pillars pass through the through holes respectively, and cooperate with the through holes in clearance, and springs are arranged on the guide pillars between the upper splint and the lower splint.