Oil pipe joint of numerical control lathe and thermal treatment process thereof

Abstract

The invention discloses an oil pipe joint of a numerical control lathe and a thermal treatment process thereof. The oil pipe joint of the numerical control lathe and the thermal treatment process thereof comprise a body and a thermal treatment process, wherein the upper end of the body is provided with a cylindrical structure, the middle part of the body is provided with an outside hexagonal structure, and the lower part of the body is provided with a toothed cylinder structure; the upper part in the body is provided with a cylindrical through hole structure which is arranged to be a first through hole structure, and the lower part of the body is similarly provided with a cylindrical through hole structure which is arranged to be a second through hole structure; the external diameter of the first through hole structure is greater than that of the second through hole structure; the thermal treatment process of the oil pipe joint is characterized in that the oil pipe joint is immersed into a proper quenching medium to cool at a higher speed after being heated to be austenitized. The oil pipe joint has high enough tensile strength to resist stretch, snap, slipping and wear, has higher fatigue resistance and impact toughness, can resist fatigue and impact fracture and can be excellently applied to the numerical control lathe.

Description

technical field [0001] The invention relates to a mechanical product, in particular to an oil pipe joint of a numerically controlled lathe and a heat treatment process thereof. Background technique [0002] Some CNC lathe oil pipe joints on the existing market cannot resist elongation, breaking, slipping and wear, and the fatigue resistance and impact toughness are not high enough to resist fatigue and impact fracture, and cannot be well applied to CNC lathes. in the lathe. Contents of the invention [0003] The invention provides an oil pipe joint of a numerically controlled lathe and a heat treatment process thereof. [0004] The purpose of the present invention is to solve the problem that some existing CNC lathe oil pipe joints do not have high enough tensile strength to resist elongation, breaking, slipping and wear, and the fatigue resistance and impact toughness are not high enough to resist fatigue. And impact fracture, can not be well applied to the problem of C...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that some existing CNC lathe oil pipe joints do not have high enough tensile strength to resist elongation, breaking, slipping and wear, and the fatigue resistance and impact toughness are not high enough to resist fatigue. And impact fracture, can not be well applied to the problem of CNC lathes

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