Freezing fixation flexible clamp used for numerical control cutting machining of thin-walled part

Abstract

The invention discloses a freezing fixation flexible clamp used for numerical control cutting machining of a thin-walled part. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part comprises a clamping mechanism and a longitudinal positioning mechanism, wherein after the clamping mechanism clamps the thin-walled part, the thin-walled part is positioned on a lathe. The longitudinal positioning mechanism is arranged below the thin-walled part on the lathe and is wholly a container containing phase change material, a vertical support is arranged on the upper surface of the phase change material in a floating mode, and a cooling passage is designed between two opposite lateral walls in the container. Therefore, after the clamping mechanism clamps the thin-walled part, the bottom surface of the thin-walled part contacts the support and applies pressure on the support in the process of contacting, and the support is sunk. At present, cooling gas is injected into the cooling passage through a vortex tube to enable the phase change material to be converted into a solid state, the support is frozen and fixed, and longitudinal positioning of the thin-walled part is achieved. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part has the advantages of being obvious in effect, convenient to achieve, low in cost, and free of pollution to the environment, and effectively improving efficiency and machining quality in the process of numerical control cutting machining of a weak-rigidity process system.

Description

technical field [0001] The invention relates to an ice-solid flexible fixture used for numerically controlled cutting of thin-walled parts, belonging to the field of mechanical processing, specifically, a positioning and clamping device used for numerically controlled cutting of thin-walled metal parts on a machine tool , can effectively improve the machining accuracy and efficiency of thin-walled parts. Background technique [0002] With the rapid development of modern manufacturing industry, mechanical products are becoming increasingly lightweight and miniaturized, and the application of thin-walled parts is becoming more and more extensive. Due to poor rigidity, thin-walled parts are prone to deformation due to the influence of cutting force, clamping force, cutting heat and residual stress during processing. Therefore, high-precision and high-quality processing of thin-walled parts has always been a difficulty for craftsmen. . For the clamping and positioning of thin-...

AI Technical Summary

Problems solved by technology

At present, the main problems in the actual use of ice-fixed flexible fixtures are the high price of temperature regulators (such as freezers, etc.), the long phase transition time of integrally frozen ice-fixed fixtures, and the consumption of energy.

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