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MJ internal screw thread rolling strengthening plastic deformation detection tool and detection method

A detection tool and internal thread technology, applied in the direction of mechanical solid deformation measurement, etc., can solve the problems affecting the production efficiency of parts and product quality, and achieve the effect of simple structure, high work efficiency and convenient use

Inactive Publication Date: 2016-01-06
LANDING GEAR ADVANCED MFG
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  • Abstract
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Problems solved by technology

So far, most enterprises still do not have an online, effective and rapid method for detecting the plastic variable of MJ internal thread rolling reinforcement, which seriously affects the production efficiency and product quality of this type of parts.

Method used

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  • MJ internal screw thread rolling strengthening plastic deformation detection tool and detection method
  • MJ internal screw thread rolling strengthening plastic deformation detection tool and detection method
  • MJ internal screw thread rolling strengthening plastic deformation detection tool and detection method

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Embodiment Construction

[0025] A metal part MJ internal thread rolling strengthened plastic variable detection tool and process, on the basis of the outer diameter micrometer, a tapered probe is added; the measuring end of the tapered probe has a conical surface, a spherical surface and an arc surface , the tangential transition between the conical surface and the spherical surface; the conical surface angle α=50°, the conical surface height h' is greater than the measured thread profile height h, that is, h'>h, to avoid the detection tool arc surface and The top of the measured thread profile interferes; the radius R1 of the spherical surface is R1=0.090-0.01, which is smaller than the root radius of the measured thread; the tapered probe has a positioning outer circle and a positioning end surface, and the diameter and length of the positioning outer circle are respectively related to the installation Hole diameter and depth matching. During the measurement process, first install the tapered probe ...

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Abstract

The invention discloses an MJ internal screw thread rolling strengthening plastic deformation detection tool and a detection method. The MJ internal screw thread rolling strengthening plastic deformation detection tool comprises an external diameter micrometer; one of the two measurement heads of the external diameter micrometer is a flat end measurement head; the other measurement head of the external diameter micrometer is a cone-shaped measurement head; the cone-shaped meausrement head is installed inside an installation hole of the external diameter micrometer through a positioning segment; the measurement end of the cone-shaped measurement head has a cone-shaped surface; the tip of the cone-shaped surface is spherical; the spherical surface of the cone-shaped surface is in contact with the root of the internal thread tooth of a part; the measurement end of the flat end measurement head is in contact with the external wall of the part during the measurement; the height h' of the cone-shaped surface is greater than the tooth height h of the internal thread to be detected; and the radius of the spherical surface of the tip of the cone-shaped measurement head is smaller than radius of the root of the internal thread tooth to be detected. The invention meets the requirement for the MJ internal screw thread rolling strengthening plastic deformation detection in the production and improves the production efficiency.

Description

technical field [0001] The invention relates to a detection tool and a detection method for an MJ internal thread rolling strengthening plastic variable, and belongs to the technical field of rolling strengthening plastic variable detection of metal parts. Background technique [0002] Mechanical parts are prone to fatigue fracture failure under alternating loads, and it is usually difficult to predict before the fracture failure occurs, resulting in unexpected disasters and losses. Therefore, anti-fatigue manufacturing is a key manufacturing in the manufacture of such parts technology. The threaded part of metal parts is one of the parts most prone to fatigue failure. The MJ (reinforced) internal thread design of high-strength and ultra-high-strength metal parts is designed to improve the fatigue resistance of parts with internal threads. , but it is still not enough to improve the fatigue resistance of parts from the perspective of materials and design. In order to signif...

Claims

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Application Information

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IPC IPC(8): G01B5/30
Inventor 张志刚翟甲友胡阿林鱼增学
Owner LANDING GEAR ADVANCED MFG
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