Steel ball sealing cone surface processing method

Abstract

The invention relates to a method for machining a steel ball sealing conical surface. A hole of the required depth is machined through a drill with a 70-degree conical angle, a conical surface of the required angle is machined through a drill with a 60-degree conical angle, the drill with the 60-degree conical angle is coaxial with the hole machined the first time, and depths of the holes manufactured the two times are identical. According to the method, cutters with different conical angles are used for machining the required steel ball sealing conical surface, so that the required size and roughness of the steel ball sealing conical surface are guaranteed, the operation is simple, large-batch production requirements of enterprises are met under the condition of meeting technical requirements, and costs are saved for enterprises.

Description

technical field [0001] The invention relates to a processing method of a sealing surface, in particular to a processing method of a sealing cone surface. Background technique [0002] The current hydraulic system often uses the structure of the steel ball seal. The steel ball sealing surface in the prior art is a conical surface processed by a drill bit with a conical surface of 60° at one time, but this processing method leads to unsatisfactory sealing effect. It often occurs that the steel ball is not sealed or the steel ball is displaced. At the same time, the processing roughness of the sealing cone surface does not meet the sealing requirements. Riveting belt method, etc. [0003] The tapered spool is used, because the volume of the spool is larger than the steel ball, it needs a certain guide length to make it work normally, which increases the processing cost and material cost, and is not conducive to the assembly of the hydraulic system. It is well adapted to the m...

AI Technical Summary

Problems solved by technology

[0002] The current hydraulic system often uses the structure of the steel ball seal. The steel ball sealing surface in the prior art is a conical surface processed by a drill bit with a conical surface of 60° at one time, but this processing method leads to unsatisfactory sealing effect. It often occurs that the steel ball is not sealed or the steel ball is displaced. At the same time, the processing roughness of the sealing cone surface does not meet the sealing requirements. Riveting belt method, etc.

[0003] The tapered spool is used, because the volume of the spool is larger than the steel ball, it needs a certain guide length to make it work normally, which increases the processing cost and material cost, and is not conducive to the assembly of the hydraulic system. Well adapted to the mass production of enterprises

[0004] The method of pressure riveting ring belt with sharp corners of the hole is adopted, because the steel ball sealing surface of this structure is a very narrow pressure riveting surface, the steel ball can not only be effectively guided, but it is easy to cause intermittent sealing failure or untimely sealing. Therefore, the sealing reliability is greatly reduced

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