CN221474238U

CN221474238U - Multi-station milling fixture for D-shaped head bolt

Info

Publication number: CN221474238U
Application number: CN202323082655.1U
Authority: CN
Inventors: 樊军; 黄波; 赵曼; 刘长军; 耿起立; 刘勇
Original assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Current assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2024-08-06
Anticipated expiration: 2033-11-15

Abstract

The utility model discloses a multi-station milling fixture for a D-shaped head bolt, comprising a clamping body (1), a clamping screw (2), a locking nut (4), a clamping hole (5), and a gap adjustment hole (6), characterized in that a plurality of clamping holes (5) and a plurality of gap adjustment holes (6) are respectively arranged on the clamping body (1), and the clamping screw (2) is inserted into the side of the clamping body (1) and the locking nut (4) is screwed in. The utility model has a multi-station clamping milling method with low cost, high efficiency and high precision.

Description

Multi-station milling fixture for D-shaped head bolt

Technical Field

The utility model belongs to the technical field of milling, and particularly relates to a multi-station milling fixture for a D-shaped head bolt.

Background

When the D-shaped head screw bolt is used for milling, the surface of a part is usually processed by adopting a mode of clamping one part at a time, and after one plane is required to be processed, the other plane is replaced for repeated clamping, positioning and processing, when the dimensional precision and the plane form and position tolerance requirements of a processed product are higher, the precision errors caused by repeated clamping and positioning are easy to ensure the consistency and the precision requirements of the product, and the defects that the product is out of tolerance in size, the form and position tolerance precision is not satisfied, and the like are likely to occur due to repeated positioning errors, the product is scrapped, so that economic loss is generated, and simultaneously, the clamping difficulty, the production time and the abrasion of a clamp of the product are increased, the waste of the production time and manpower is greatly increased, and the production efficiency is reduced and the production cost is improved.

Disclosure of Invention

The utility model aims to overcome the defects and provide the multi-station milling fixture for the D-head screw bolt, which has the advantages of low cost, high efficiency and high precision.

The aim and the main technical problems are achieved by adopting the following technical scheme:

the utility model relates to a multi-station milling fixture for a D-shaped head bolt, which comprises a fixture body, a clamping screw, a locking nut, a clamping hole and a gap adjusting hole, and is characterized in that; the clamp body is respectively provided with a plurality of clamping holes and a plurality of clearance adjusting holes, and the side surface of the clamp body penetrates into the clamping screw rod to be screwed into the locking nut.

The clamp body is provided with a plurality of grooves which penetrate through the clamp holes and the clearance adjusting holes.

And the clamp body is screwed with a limit screw, and the limit screw is inserted into a groove arranged on the clamping screw to prop against the clamping screw.

Compared with the prior art, the utility model has obvious beneficial effects; the technical scheme is as follows: a plurality of clamping holes and a plurality of clearance adjusting holes are respectively formed in the clamp body, and the side face of the clamp body penetrates into the clamping screw rod to be screwed into the lock nut. 1. The clamp body is used as a clamp base and is provided with a plurality of clearance adjusting holes formed by a row of arc-shaped working supporting positions for limiting the freedom degrees of the parts in the horizontal and vertical directions, a row of clearance adjusting holes with groove-shaped clearances are correspondingly arranged below the clamping holes and are used for adjusting the clearance between the working positions of the clamp body, the clamping screw rod penetrates through the through hole of the whole clamp body through the through hole below the clamp body clamping hole and is screwed by the locking nut to adjust the clearance of the clamp body, therefore, a workpiece is clamped, a limit screw passes through an upper hole of a clamp body and is mutually matched with a pin hole on a clamping screw rod to be screwed, so that the circular motion of the clamping screw rod is limited, and the milling clamp clamps a plurality of D-shaped head bolts simultaneously by utilizing a multi-station clamping hole, so that the clamping times and difficulty in the process of machining the D-shaped head bolts are reduced, the machining time is saved, and the product machining efficiency is improved; 2. after the clamp can realize one-time clamping, the other surface to be processed of the plurality of D-shaped head bolts can be continuously processed in a rotating way, so that not only is the dimensional consistency among parts ensured, but also good form and position tolerance precision among multiple planes of the D-shaped head bolts is ensured; 3. when the milling clamp is used, the abrasion to which the milling clamp is subjected is correspondingly reduced due to the reduction of the clamping times, the service life of the milling clamp is prolonged, the use precision of the milling clamp is improved, the machining precision is increased, and the production cost is reduced. The multi-station clamping milling is realized, the cost is low, the efficiency is high, and the precision is high.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the clamp body of the present utility model;

FIG. 3 is a cross-sectional view of A-A in FIG. 2

FIG. 4 is a schematic view of the structure of the clamping screw of the present utility model;

FIG. 5 is a cross-sectional view of B-B in FIG. 4;

fig. 6 is a schematic view of the structure of the limit screw of the present utility model.

1. The fixture body, 2, clamping screw, 3, stop screw, 4, lock nut, 5, clamp hole, 6, clearance adjustment hole.

Detailed Description

The following detailed description of specific embodiments, structures, features and their functions according to the present utility model is provided with reference to the accompanying drawings and preferred embodiments.

The utility model relates to a multi-station milling fixture for a D-head bolt, which comprises a fixture body 1, a clamping screw rod 2, a limit screw 3, a lock nut 4, a clamping hole 5 and a gap adjusting hole 6, and is characterized in that; the upper end of the clamp body 1 is provided with a plurality of clamp holes 5, the middle part is provided with a plurality of clearance adjustment holes 6, the side surface of the clamp body 1 penetrates into the clamp screw 2 to be screwed into the lock nut 4, the upper end and the middle part of the clamp body 1 are provided with a plurality of grooves penetrating through the clamp holes 5 and the clearance adjustment holes 6, the clamp body 1 is screwed with a limit screw 3, and the limit screw 3 is inserted into the groove arranged on the clamp screw 2 to prop against the clamp screw 2.

When the clamp is used, the D-shaped head screw bolt is firstly arranged on the clamping hole 5 of the clamp body 1, then the clamping screw rod 2 is penetrated into the lock nut 4 from the side surface of the clamp body 1, the limit screw 3 is screwed into the front surface of the clamp body 1, the clamp screw rod 2 is prevented from moving, the lock nut 4 is slowly screwed to adjust the gap of the clamp body and the surface to be processed of a workpiece, a plurality of workpieces are simultaneously fixed on different clamping holes 5, the surfaces to be processed are guaranteed to be on the same horizontal plane, and finally the lock nut 4 and the limit screw 3 are completely screwed, so that one-time clamping is completed. When the other surface is machined, the locking nut 4 is only required to be loosened, the workpiece is rotated to be adjusted to the other surface to be machined, and then the locking nut 4 is screwed, so that the workpiece can be machined again.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any simple modification, equivalent variation and variation of the above embodiment according to the technical matter of the present utility model still fall within the scope of the technical scheme of the present utility model.

Claims

1. The utility model provides a multistation milling fixture of D type head bolt, includes anchor clamps body (1), clamping screw rod (2), lock nut (4), clamping hole (5), clearance adjustment hole (6), its characterized in that; a plurality of clamping holes (5) and a plurality of clearance adjusting holes (6) are respectively formed in the clamp body (1), and the side surface of the clamp body (1) penetrates into the clamping screw (2) to be screwed into the locking nut (4).

2. A multi-station milling fixture for a D-head bolt according to claim 1, wherein; the fixture body (1) is provided with a plurality of grooves which penetrate through the fixture holes (5) and the clearance adjusting holes (6).

3. A multi-station milling fixture for a D-head bolt according to claim 1, wherein; and the clamp body (1) is screwed with a limit screw (3), and the limit screw (3) is inserted into a groove arranged on the clamping screw (2) to prop against the clamping screw (2).