A flat rolling tool lubricated by vacuum pumping

Abstract

The invention discloses a plane rolling cutter conducting lubrication through vacuum air exhaust. The plane rolling cutter comprises a cutter handle part and a cutter body. The cutter is provided with a through hole penetrating through the cutter. A pipeline connected with a vacuum generator is arranged in the through hole. A cutter connecting barrel is sleeved with a nozzle support, and cooling nozzles are fixed to the nozzle support. According to the cutter, static initial force borne by the cutter when the cutter is pressed in a machined surface can be known accurately in time, and the cutter adapts to the uneven machined surface and is high in machining precision. Cooling gas is used for lubrication; the cooling gas is sprayed to positions nearby rolling balls, a compact gas lubrication layer is formed between the machined surface and the rolling balls by means of gas pressure differences generated by four vacuum generation openings, and therefore the hidden danger of workpiece surface burning caused by poor lubrication is reduced.

Description

technical field [0001] The invention relates to the field of chipless machining, and more specifically relates to a plane rolling tool lubricated by vacuum pumping. Background technique [0002] The rolling method is a kind of chip-free processing. It can not only achieve a high degree of smoothness, but also improve the mechanical properties of the processed parts. At the same time, with the help of appropriate processing technology, the surface grains can be refined or even nanometerized. . The essence of the rolling method is to use a high-hardness bladeless tool-steel ball or roller to cause local high pressure on the processed surface. As the tool rolls along the processed surface, the elastic-plastic deformation of the surface material is formed, so that the microscopic peaks left on the surface by the previous process are flattened, and a strengthening layer with a certain thickness is formed on the surface. Due to the smooth surface and increased hardness, the wear...

AI Technical Summary

Problems solved by technology

At present, the common rolling knife pressure adjustment mechanism is mostly a spring, and the rolling allowance is difficult to control. If the rolling allowance is too large, the local stress on the surface of the part will increase, and it will easily form cracks and scales, which will reduce the surface quality.

The rolling allowance of the rolling knife is too small to press down the wave crest of the surface to be processed, and the ideal roughness cannot be achieved

[0004] At the same time, rolling is the contact between the ball and the surface of the workpiece. The existing lubrication method has an unsatisfactory lubrication effect, and it is easy to burn the surface of the workpiece due to poor lubrication, which affects the processing quality.

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