Double hydraulic rolling tool with equal rolling force

Abstract

The double hydraulic rolling tool with equal rolling force for free surface consists of one small displacement trimming mechanism and great displacement regulating mechanism, both of which have independent hydraulic systems. During rolling on free surface with surface relief, the rolling elements in the small displacement trimming mechanism and piston in the great displacement regulating mechanism will cooperate mutually under the action of the liquid pressure to regulate the positions of the rolling element holding sleeve and the cylinder to eliminate the effect of relief, so as to maintain constant rolling pressure. The present invention can reach high precision of the rolled workpiece, surface smoothness of Ra0.1-Ra1.0 and obviously raised workpiece strength, hardness and anticorrosion performance.

Description

technical field [0001] The invention relates to a rolling processing tool, in particular to a free-surface rolling tool, in particular to a rolling tool with double hydraulic pressure and equal rolling force. Background technique [0002] The surface quality of parts not only affects the aesthetics of their appearance, but also has an important impact on the wear resistance, corrosion resistance, fatigue resistance, fit, bearing capacity, service life and energy consumption of parts. The rolling process is a precision micro-plastic processing process, which can be used to replace the grinding process to perform mirror polishing and strengthening treatment on the surface of mechanical parts. This process uses a rolling tool to apply a certain pressure on the surface of the part at room temperature to cause plastic deformation on the surface of the workpiece, thereby modifying the microscopic geometry of the surface of the workpiece, reducing the surfac...

AI Technical Summary

Problems solved by technology

[0004] There are two problems in these two methods of rolling: First, because the rolling depth is generally at the wire level, if there is a large dimensional error in the preformed workpiece or the precision of the machine tool is not enough, it is usually difficult to maintain the rolling depth (rolling force) It is basically constant, so it affects the overall effect of rolling, especially when it involves rolling processing of large-surface workpieces, this problem is even more serious; secondly, the latter method must use high-precision CNC machine tools, and has high requirements for processing technology, while The level of machining equipment and technology of Chinese enterprises is generally low, which limits the scope of application and effect of rolling technology

However, how to keep the rolling depth (rolling force) basically constant when there are large fluctuations on the surface of the workpiece on non-NC ordinary machine tools, such as realizing the rolling processing of complex curved surface parts, has not yet been solved.

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