Hydraulic self-centering fast clamping device

Abstract

The invention discloses a hydraulic self-centering fast clamping device which comprises an oil path end plate (1), an oil path bridge plate (2), an end plate (3), a rotary shifting fork (4), an oil cylinder (5), a driving joint (6) and a clamp (7). When the clamping device formed by the components is applied, the device is fixed on a fourth shaft which rotatably works in a numerical control center. The oil cylinder is connected with an oil distributer of the fourth shaft of the numerical control center through built-in oil paths in the oil path bridge plate and the oil path end plate, and is controlled by a computer of the numerical control center. The oil cylinder drives the clamp to open and close quickly to clamp a dissembling workpiece through the driving joint and the rotary shifting fork for three-dimensional five-shaft cutting processing, the deficiencies of large strength, low efficiency and poor clamping precision are overcome in the prior art. The clamping device is connected with the fourth shaft of the numerical control center and is driven hydraulically to open and close, so that the work intensity is reduced, the disassembling efficiency is improved, and the clamping precision is improved for clamping and disassembling work pieces.

Description

technical field [0001] The invention relates to a machine clamp, in particular to a hydraulic self-centering quick clamping device which is installed on the fourth axis of a numerically controlled machining center and used to clamp a workpiece for three-dimensional five-axis cutting. Background technique [0002] When the existing machine tool is working, it uses a universal fixture called a chuck to clamp and unload the workpiece. Since the universal fixture needs manual loading and unloading of the workpiece with the help of a chuck wrench, the work intensity is high, the loading and unloading efficiency is low, and the centering of the workpiece is not accurate when the workpiece is repeatedly clamped. Therefore, The prior art has the problems and deficiencies of high strength, low efficiency, and poor clamping precision. Contents of the invention [0003] Aiming at the problems and deficiencies in the above-mentioned prior art, the present invention adopts a clamping d...

AI Technical Summary

Problems solved by technology

[0002] The existing machine tool uses a universal fixture called a chuck to clamp the loading and unloading of the workpiece. Since the universal fixture needs manual loading and unloading of the workpiece with the help of a chuck wrench, the work intensity is high, the loading and unloading efficiency is low, and the centering of the workpiece is not accurate when the workpiece is repeatedly clamped. Therefore, The existing technology has the problems and deficiencies of high strength, low efficiency, and poor clamping accuracy

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