Tensioning oil cylinder inner hole surface strengthening tool and strengthening method

Abstract

The invention relates to the technical field of oil cylinder manufacturing, and discloses a tensioning oil cylinder inner hole surface strengthening tool and a strengthening method. The strengtheningtool comprises a clamping handle and a floating rolling module movably connected to the clamping handle, wherein the floating rolling module comprises a rigid seat block with an opening groove, a rolling assembly which is arranged on one side of the groove of the rigid seat block and is used for performing rolling strengthening on the surface of an inner hole of a tensioning oil cylinder, and a linear moving ball assembly which is arranged on the other side of the groove of the rigid seat block and is used for supporting the outer circle of the tensioning oil cylinder so as to balance rollingforce, a rolling head of the rolling assembly faces the linear moving ball assembly, during rolling, the rolling head of the rolling assembly presses the surface of the inner hole of the tensioning oil cylinder, and a ball on the linear moving ball assembly is attached to the outer circle surface of the tensioning oil cylinder. According to the tensioning oil cylinder inner hole surface strengthening tool and the strengthening method, the rolling quality of the surface of the inner hole of the oil cylinder is improved.

Description

technical field [0001] The invention relates to the technical field of oil cylinder manufacturing, in particular to a tensioning oil cylinder inner hole surface strengthening tool and a strengthening method. Background technique [0002] Tensioning cylinder is a kind of oil cylinder, which mainly plays a role in tensioning other mechanical parts in mechanical equipment. [0003] In the prior art, the cylinder part of the tensioning oil cylinder (as attached figure 1 As shown in the serial number 1) the surface strengthening after the inner hole processing is carried out by rolling with a conventional inner hole rolling tool, and its purpose is to improve the hardness and roughness of the inner hole surface, but the existing inner hole rolling tool It also has the following problems when using it: [0004] One is that the existing inner hole rolling tool uses an elastic shaft, and a rolling head is arranged on the front end of the elastic shaft. When rolling, the rolling he...

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Problems solved by technology

[0004] One is that the existing inner hole rolling tool uses an elastic shaft, and a rolling head is arranged on the front end of the elastic shaft. When rolling, the rolling head at the front end of the elastic shaft is extended into the oil cylinder and pressed against the oil cylinder. The inner surface of the rolling press (pre-tightening force) is obtained by relying on the lateral deformation of the elastic shaft, and the size of the pre-tightening force is obtained through mechanical calculation according to the length of the elastic shaft and the amount of lateral pre-tightening , resulting in inaccurate application of pretightening force, and a small adjustable range of profit value. At the same time, it requires high skill of the operator, and the quality of rolling is not easy to guarantee.

[0005] The second is that the rolling head of the existing inner hole rolling tool is unilaterally pressed against the inner hole surface of the oil cylinder. When the wall thickness of the oil cylinder is relatively thin and the rolling force is large, it is easy to cause the lateral deformation of the oil cylinder, making the rolling The rolling conditions deteriorate, so that the ideal rolling surface cannot be obtained, and the permanent deformation of the cylinder is easily caused when the rolling force is large, making the cylinder out of round, thereby reducing the manufacturing quality of the cylinder

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