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Quick clamping method for group boring of parts and pneumatic clamp

A technology for pneumatic fixtures and parts, which is used in metal processing machinery parts, clamping, positioning devices, etc., can solve the problems of inability to guarantee the coaxiality requirements of component boring holes, insufficient automation of clamping and disassembly, and high degree of manual intervention. Low level of manual intervention, firm and reliable clamping, and improved boring efficiency

Inactive Publication Date: 2021-08-13
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents have deficiencies in the automation of clamping and disassembly, and cannot guarantee the coaxiality requirements of component bores, and the degree of manual intervention is high, which is not universal

Method used

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  • Quick clamping method for group boring of parts and pneumatic clamp
  • Quick clamping method for group boring of parts and pneumatic clamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment discloses a pneumatic clamp for group boring of parts, such as figure 1 As shown, it includes a base 1 , a pneumatic locking mechanism arranged on the base 1 , a positioning boss 4 , a limiting groove and a U-shaped spacer 10 .

[0045] Both ends of the base 1 are provided with a positioning hole 2 and a pressure plate groove 15, the base 1 is connected and positioned with the T-shaped slot of the machine tool table through the positioning hole 2 and the positioning pin, and the pressure plate groove 15 is used to cooperate with the general pressure plate Realize the fixation of pneumatic clamps.

[0046] The positioning boss 4 is arranged in the limiting groove, and divides the limiting groove into a plurality of spaces for limiting the horizontal movement of the parts 11 . The positioning boss 4 is a rectangular block, the planes on both sides of it are parallel to each other and both are positioning datum planes 13, the bottom plane of the limiting g...

Embodiment 2

[0054] This embodiment provides a pneumatic clamp for group boring of parts. On the basis of Embodiment 1, further, the distal end of the pneumatic pressure plate 5 is provided with an internally threaded hole, and the internally threaded hole is screwed Compression screw 6 is arranged, and the adjustable height stroke of compression screw 6 is 10mm.

[0055] The height of the compression screw 6 on the pneumatic pressure plate 5 can be adjusted according to the height of the U-shaped spacer 10, so as to improve the versatility of the U-shaped spacer 10, reduce its production quantity, and reduce the cost.

Embodiment 3

[0057] Based on the pneumatic clamp described in Embodiment 2, further, this embodiment proposes a fast clamping method for group boring of parts 11, and the specific implementation steps are as follows:

[0058] Step 1: Install the Pneumatic Gripper. First, insert the two positioning pins into the positioning holes 2 at both ends of the base 1, connect them to the T-shaped slots of the machine tool table, use a lever gauge to find the straightness, and ensure that the straightness of the tooling is within the range of 0.05mm; The platen groove 15 provided on the seat 1 realizes the fixing of the pneumatic clamp.

[0059] Step 2: Install the parts to be bored. Two parts 11 to be bored are installed at the same time with the bottom surface of the limit groove on the base 1, the inner side surface and the side surface of the positioning boss 4 as the positioning reference plane, and the parts 11 are placed on the web 12 according to the position of the cylinder 3 and the pneuma...

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Abstract

The invention discloses a quick clamping method for group boring of parts and a pneumatic clamp, and belongs to the technical field of machining. The pneumatic clamp comprises a base, a pneumatic locking mechanism arranged on the base, a positioning boss, a limiting groove and a U-shaped cushion block, wherein the positioning boss is arranged in the limiting groove and divides the limiting groove into a plurality of spaces used for limiting horizontal movement of the parts; a U-shaped cushion block is inversely buckled on web plates of the parts and attached to the surfaces of the two web plates; the pneumatic locking mechanism comprises a compressed air source, a breather pipe, a scavenging valve and a plurality of locking pieces; the input end of the scavenging air valve is connected with the compressed air source, and the output end of the scavenging air valve is connected with each locking piece through the breather pipe; each locking piece comprises an air cylinder and a pneumatic pressing plate; and each air cylinder drives each pneumatic pressing plate to rotate to the position above the U-shaped cushion block and move downwards to press the parts. The pneumatic clamp is high in clamping universality, convenient and efficient in clamping, firm, reliable and high in automation degree; and group boring of the parts can be achieved through one-time clamping, and the boring efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a quick clamping method and a pneumatic clamp for group boring of parts. Background technique [0002] Fixtures are process devices used to quickly locate and fasten parts during processing, so that machine tools, tools, and workpieces maintain precise relative positions. Generally speaking, most of the main load-bearing components and complex joint parts on the aircraft need to be supplemented with high-precision hole boring in the fatigue critical area after the CNC machining is completed to install the bushing. At present, the tooling and fixtures that are widely used in boring processing are general-purpose hole system platforms, special tooling and vise clamps. The general-purpose hole system platforms are generally suitable for parts with positioning holes in the structure, and manual lapping of the pressure plate is required. It is cumbersome and time-consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/08
CPCB23Q3/061B23Q3/08B23Q2703/04
Inventor 徐正德周进文琴胡天兵侯珺森胡立黄思思刘展
Owner CHENGDU AIRCRAFT INDUSTRY GROUP