Low-pressure-difference steady-state vacuum chuck based on stepped conical flow channel

Abstract

The invention discloses a low-pressure-difference steady-state vacuum chuck based on a stepped conical runner, and belongs to the technical field of tool clamps, the low-pressure-difference steady-state vacuum chuck comprises a top cover and a base, the top of the top cover is fixedly connected with a plurality of bosses, the top of each boss is fixedly connected with the bottoms of a plurality of limiting columns, each boss is further provided with a plurality of air suction holes, and the air suction holes are communicated with the bottom of the top cover. Each air suction hole penetrates through the boss and the top cover, an anti-skid layer is arranged on the side wall of the top cover, and a plurality of positioning holes are formed in the position, close to the anti-skid layer, of the top of the top cover; the top cover and the base are kept relatively stable through cooperation of the positioning holes formed in the top cover and the positioning pins fixedly connected to the base, the top cover and the base are further kept stable through cooperation of the pressing grooves formed in the bottom of the top cover and the sealing strips and the annular grooves, relative movement of the top cover and the base in the chip machining process is avoided, and the chip machining quality is improved. The bottom of the air suction hole is always communicated with the diversion trench, so that the vacuum chuck can operate stably.

Description

technical field [0001] The invention belongs to the technical field of tooling and fixtures, and in particular relates to a low-pressure differential steady-state vacuum suction cup based on a stepped conical flow channel. Background technique [0002] The vacuum chuck is mainly used for positioning and clamping the workpiece in machining. During the machining operation, the positioning device is the key to ensure its machining accuracy. When processing magnetic materials such as iron, the existing electromagnetic chuck can be used for positioning and processing. However, for non-magnetic chips such as rubber, wood, plastic, etc., a vacuum chuck is required. Of course, the vacuum chuck can also process the magnetic chip. [0003] At present, for the existing vacuum suction cup, such as the Chinese patent with the bulletin number CN209273275U, the surface is flat and lacks a certain positioning device, which is inconvenient for the rapid positioning of the chip, and the effic...

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Problems solved by technology

[0003] At present, for existing vacuum chucks, such as the Chinese patent with the notification number CN209273275U, its surface is smooth and lacks a certain positioning device, which is not convenient for fast positioning of the chip, and the efficiency is low, so that the position of the chip is not uniform, and the stability of the adsorption is poor. , resulting in low chip processing accuracy, such as the Chinese patent with the notification number CN211332308U, the top cover and base of the vacuum suction cup body are inconvenient to separate, and it is difficult to disassemble and replace. It is easy to slip or even collide in the middle, which has certain disadvantages

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