CN110355587B

CN110355587B - Tool clamp and method for machining welding type supporting rod

Info

Publication number: CN110355587B
Application number: CN201910501645.6A
Authority: CN
Inventors: 周苗苗; 龚俊; 张俊; 吕吉婵; 罗建中
Original assignee: Changhe Aircraft Industries Group Co Ltd
Current assignee: Changhe Aircraft Industries Group Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2021-08-06
Anticipated expiration: 2039-06-11
Also published as: CN110355587A

Abstract

The invention belongs to a machining technology, and relates to a tool clamp and a method for machining a welding type supporting rod. The frock clamp includes: the clamp comprises a clamp bottom plate, a left support, a left positioning piece, a group of pressing fixing assemblies, a right support and a right positioning piece. The fixture solves the problems that the parallelism and the symmetry of parts are unstable due to the upwarp deformation and other factors, and the product out-of-tolerance rate is high.

Description

Tool clamp and method for machining welding type supporting rod

Technical Field

The invention belongs to a machining technology, and relates to a tool clamp and a method for machining a welding type supporting rod.

Background

This welding type branch comprises a long section of thick bamboo both ends welded joint, carries out the finish machining to both ends joint after the welding, needs to guarantee that the hole on both ends joint satisfies mutual symmetry 0.05 and the fork mouth depth of parallelism 0.05 that connects. The combined clamp adopted by the factor control processing is in a point fixing mode, so that the part is easy to rotate when stressed, and the clamping is unstable; the direction of the part fork mouth is vertical to the clamping stress direction, so that the factors such as upwarp deformation exist in the fork mouth machining process, the machining of the parallelism and the symmetry of the part is unstable, and the product tolerance rate is high.

Disclosure of Invention

The purpose of the invention is: the invention provides a tool clamp and a method for machining a welding type support rod, and solves the problems that the parallelism and symmetry of parts are unstable due to upwarp deformation and the like, and the product out-of-tolerance rate is high.

The technical scheme of the invention is as follows:

in a first aspect, a tooling clamp for processing a welding type supporting rod is provided, which comprises: the clamp comprises a clamp bottom plate, a left support, a left positioning piece, a group of pressing and fixing assemblies, a right support and a right positioning piece;

the pressing and fixing assembly comprises a V-shaped support and a pressing assembly; the left support, the left positioning piece, the V-shaped support, the right support and the right positioning piece are fixed on the upper surface of the clamp bottom plate along a straight line; the group of pressing assemblies press the rods of the parts on the corresponding V-shaped supports so that the rods of the parts are parallel to the upper surface of the clamp bottom plate; the left positioning piece positions a left joint of the part in the left support so as to conveniently machine a hole in the right joint of the part, and the machined hole is perpendicular to the central shaft of the rod; the right positioning piece positions the right joint of the part in the right support so as to machine a hole in the left joint of the part, and the machined hole is perpendicular to the central shaft of the rod.

Further, the hold-down assembly includes: the device comprises a pressure plate, an eyelet bolt, a hexagonal nut with a shoulder and a cylindrical pin; the swing bolt, the hexagonal nut with the shoulder and the cylindrical pin are matched to tightly press the rod between the pressing plate and the V-shaped support.

Further, a set of compression fixation assemblies includes 2 identical compression fixation assemblies.

Further, frock clamp still includes: and handles fixed on two sides of the clamp bottom plate.

Further, frock clamp still includes: the worker is fixed on the nameplate of the bottom plate of the clamp.

Further, frock clamp still includes: and the inner hexagon screw and the cylindrical pin are used for fixedly connecting the V-shaped support and the clamp bottom plate.

Furthermore, the left positioning piece is a positioning bolt, and the right positioning piece is a positioning pin.

In a second aspect, a method of processing a welded type strut is provided, comprising:

stably placing the primary processing part on the V-shaped supports at the two ends, and covering the pressing plates at the two ends to perform fastening and positioning; the hole of the joint of the primary machined part is the primary machined part; the hole of the left joint is positioned on the fork opening of the left joint;

inserting the left positioning piece into the hole of the left joint to position the left joint;

machining a hole of the right joint so that the machined hole is perpendicular to the central axis of the rod;

taking out the left positioning part, and inserting the right positioning part into the hole of the right joint to position the right joint;

the hole of the left joint is machined so that the machined hole is perpendicular to the central axis of the rod.

The invention has the advantages that: the clamping mode is changed into encircling fixation, so that the clamping is stable and reliable, the single-side deformation of the small part can be realized, and the processing quality and efficiency are improved.

Drawings

Fig. 1 is a schematic structural diagram of a tool clamp for processing a welding-type support rod according to the present invention.

Fig. 2 is a schematic structural diagram of a tool clamp for processing a welding-type support rod according to the present invention.

Detailed Description

The present invention is described in further detail below.

As shown in the figures 1-2, the invention changes the clamping mode into surface fixing, can effectively fix the parts without rotating; meanwhile, clamping is uniform, single-side deformation of small parts can be realized, the stress direction of the parts is parallel to the fork opening plane by changing the clamping mode, the parts are guaranteed not to be subjected to bending deformation in the fork opening direction, the influence of part deformation on the parallelism and the symmetry of the parts is eliminated, high-precision symmetry is guaranteed, and the parallelism is guaranteed. The fixture is characterized by comprising a fixture bottom plate 1, a support 2, a V-shaped support 3, a pressing plate 4, a support 5, a positioning pin 6, a first bush 7, a second bush, a swing bolt, a hexagonal nut with a shoulder, a first cylindrical pin, an inner hexagonal screw, a second cylindrical pin, a handle, a positioning bolt 8 and a tooling name plate.

The part is stably placed on the V-shaped supports 3 at the two ends to be supported during machining, the pressing plates 4 at the two ends are covered to be in a fastening position, the positioning bolt 8 is inserted into the corresponding end joint hole of the part, the end face of the other end joint can be machined in a numerical control mode, the tool relieving phenomenon of the part is reduced through the tool clamping, and the symmetry and the parallelism of the two end faces are simply guaranteed. And then the positioning bolt 8 is taken out, the positioning pin 6 is inserted into the corresponding end joint hole of the corresponding part, and the joint fork at the other end is processed, so that the qualified symmetry and parallelism can be processed in the same way. The tool is also used for machining precision holes of the connectors at two ends of a coordinate grinding machine, the operation is the same, and the verticality of the precision holes relative to the fork openings can be guaranteed.

Claims

1. The utility model provides a frock clamp of processing welding type branch which characterized in that includes: the clamp comprises a clamp bottom plate, a left support, a left positioning piece, a group of pressing and fixing assemblies, a right support and a right positioning piece;

the pressing and fixing assembly comprises a V-shaped support and a pressing assembly; the left support, the left positioning piece, the V-shaped support, the right support and the right positioning piece are fixed on the upper surface of the clamp bottom plate along a straight line; the group of pressing assemblies press the rods of the parts on the corresponding V-shaped supports so that the rods of the parts are parallel to the upper surface of the clamp bottom plate, the stress direction of the parts is parallel to the plane of the fork openings, and the fork openings are formed in the joints at the two ends of the supporting rod; the left positioning piece positions a left joint of the part in the left support so as to conveniently machine a hole in the right joint of the part, and the machined hole is perpendicular to the central shaft of the rod; the right positioning piece positions the right joint of the part in the right support so as to machine a hole in the left joint of the part, and the machined hole is perpendicular to the central shaft of the rod.

2. The tooling fixture of claim 1, wherein the hold down assembly comprises: the device comprises a pressure plate, an eyelet bolt, a hexagonal nut with a shoulder and a cylindrical pin; the swing bolt, the hexagonal nut with the shoulder and the cylindrical pin are matched to tightly press the rod between the pressing plate and the V-shaped support.

3. The tooling fixture of claim 1 wherein a set of hold-down assemblies comprises 2 identical hold-down assemblies.

4. The tooling fixture of claim 1, further comprising: and handles fixed on two sides of the clamp bottom plate.

5. The tooling fixture of claim 1, further comprising: the worker is fixed on the nameplate of the bottom plate of the clamp.

6. The tooling fixture of claim 1, further comprising: and the inner hexagon screw and the cylindrical pin are used for fixedly connecting the V-shaped support and the clamp bottom plate.

7. The tooling fixture of claim 1, wherein the left locating member is a locating pin and the right locating member is a locating pin.

8. A method for processing a welding type support rod, which is applied to the tool clamp for processing the welding type support rod in any one of claims 1 to 7, and is characterized by comprising the following steps:

stably placing the primary processing part on the V-shaped supports at the two ends, and covering the pressing plates at the two ends to perform fastening and positioning; the hole of the left joint is positioned on the fork opening of the left joint;