Pneumatic fixture

Abstract

The invention relates to a pneumatic fixture, which consists of support legs, a base plate, a main body, positioning sleeves, a pneumatic fastening device and an air cylinder, wherein the support legs are fixedly arranged under the base plate; the main body is horizontally and fixedly arranged on the upper surface of the base plate; the middle part of the main body is provided with the pneumatic fastening device; the air cylinder is fixedly arranged under the base plate; the main body on the periphery of the pneumatic fastening device is inlaid with a group of positioning sleeve; the pneumatic fastening device consists of a cone-shaped sleeve, wedges and return springs, wherein the cone-shaped sleeve is movably arranged on the middle part of the base plate in a longitudinally inversed way, and is coaxially fixed with an air cylinder push rod; the wedge is inlaid between the cone-shaped sleeve and each positioning sleeve, the inclined plane of the wedge is in sliding fit with the cone-shaped sleeve, and the right angle face of the wedge is inlaid in the radial slot formed by each positioning sleeve; one end on which each wedge is inlaid into the positioning sleeve is machined with a radial blind hole; and the blind hole is provided with the return spring. The invention is applicable to the positioning and fastening of the part with more working procedures, higher precision and larger batch, and has the advantages of simple operation, high efficiency and stable and reliable running.

Description

technical field [0001] The invention belongs to the field of machining, in particular to a pneumatic tooling for a machining center. Background technique [0002] Machining centers are high-efficiency automatic machine tools suitable for processing complex-shaped workpieces composed of mechanical equipment and numerical control systems. The machining center has the function of automatic tool change. After the workpiece is clamped once, it can carry out centralized processing of various processes such as milling, drilling, boring, reaming and tapping. However, the structure of fixtures and fixtures used in existing machining centers is usually relatively simple, and has the following disadvantages in the process of use: For fixtures with a single piece of clamping, only one part can be processed once the tool is changed, and the efficiency is low, and the clamping of the workpiece Tightening and loosening are manual operations; for tooling that clamps multiple workpieces, mu...

AI Technical Summary

Problems solved by technology

However, the structure of fixtures and fixtures used in existing machining centers is usually relatively simple, and has the following disadvantages in the process of use: For fixtures with a single piece of clamping, only one part can be processed once the tool is changed, and the efficiency is low, and the clamping of the workpiece Tightening and loosening are manual operations; for tooling with multiple workpieces, multiple parts can be processed by changing the tool once, but the time for clamping and loosening of multiple workpieces is also lengthened, the efficiency is low, and the labor intensity is high

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