Bar stock pneumatic radial impact blanking method with high-efficiency and precision

Abstract

The invention discloses a bar stock pneumatic radial impact high-efficiency precise blanking method. In the method, the bar stock is arranged on a pneumatic radial impact precise blanking device and the main working parts of the blanking device comprise a blanking sleeve, an elastic pad sleeve, a bar stock fixing sleeve, an impact cylinder, a piston and a blanking die. The impact cylinder works sequentially under the control of a control system and drives the blanking die to load the bar stock along the radial direction continuously; cracks are extended from the surface of the bar stock along the radial direction to the center of the circle by a fatigue breaking device of the bar stock, thus achieving the blanking and gaining good quality of the profile.

Description

technical field [0001] The invention belongs to the technical field of low energy consumption, near-net and high-efficiency precision molding, and relates to a blanking method, in particular to a high-efficiency and precise pneumatic radial impact blanking method for bars. The method utilizes a pneumatic radial impact high-efficiency precision blanking device, The principle of pneumatic impact is adopted to realize the circumferential generation, expansion and fracture of fatigue cracks on the bar under periodic radial loading, and finally complete the blanking. Background technique [0002] The blanking of metal bars widely exists in the preparation process of cold extrusion, die forging, metal chain pins, rolling bearing rollers, pin standard parts and shaft parts, and in these blanking processes, the amount of blanking is huge, At present, traditional shearing, sawing, high-energy cutting and other blanking methods have problems such as low materia...

AI Technical Summary

Problems solved by technology

[0002] The blanking of metal bars widely exists in the preparation process of cold extrusion, die forging, metal chain pins, rolling bearing rollers, pin standard parts and shaft parts, and in these blanking processes, the amount of blanking is huge, At present, traditional shearing, sawing, high-energy cutting and other blanking methods have problems such as low material utilization rate, large blanking force, high energy consumption, low production efficiency and poor blanking section quality to varying degrees.

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