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A method of manufacturing a micrometer

A manufacturing method and micrometer technology, applied to micrometers, manufacturing tools, furnace types, etc., can solve the problems of unstable measurement accuracy, low anvil hardness, and low dimensional stability of micrometer components, so as to improve dimensional stability and hardness, Effect of low cost and improved hardenability

Active Publication Date: 2017-11-10
WUXI YICHEN MOLD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the dimensional stability of the micrometer component is not high and the hardness of the measuring anvil is low due to the processing technology of the existing micrometer, which further causes the problem of unstable measurement accuracy, the invention provides a method for manufacturing the micrometer. By changing the blank assembly points, and use the corresponding heat treatment process to improve the dimensional stability of its components and the hardness of the anvil, so as to improve the stability of its measurement accuracy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A manufacturing method of a micrometer, which includes the following steps:

[0031] (1) Preparation of micrometer materials:

[0032] The mass percentages of the micrometer blank components are: C: 1.00%, Cr: 1.45%, Co: ≦1.00%, Mn: ≦0.40%, Si: ≦0.35%, S: ≦0.03%, P: ≦0.03%, and more The amount is Fe;

[0033] (2) Forging of blank:

[0034] The billet is heated to the initial forging temperature in an intermediate frequency induction heating furnace, and then the heated billet is placed in a rolling mill and rolled into a micrometer blank by a rolling die;

[0035] (3) Normalizing treatment of forging blanks:

[0036] The forging blank obtained in step (2) is normalized, the normalizing temperature is 830°C, the temperature is kept for 7 hours, and then it is discharged from the furnace and air-cooled to room temperature;

[0037] (4) Spheroidizing annealing treatment of forging blank:

[0038] Spheroidizing annealing is performed on the forging blank obtained in step (3), the annea...

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Abstract

The invention discloses a manufacturing method of a micrometer. The manufacturing method of the micrometer belongs to the technical field of measuring implement processing and has the processing steps of (1) preparation of micrometer materials; (2) forging of a workblank; (3) normalizing treatment of the forged workblank; (4) spheroidizing annealing treatment of the forged workblank; (5) preliminary processing of the forged workblank; (6) heat treatment; (7) deep processing of the micrometer. The manufacturing method of the micrometer solves the problem that the measuring accuracy is unstable since the micrometer is low in component dimension stability and lower in anvil measurement hardness due to the processing craft of the existing micrometer, and has the advantages of simple structure, low cost and easiness in processing.

Description

Technical field [0001] The invention belongs to the technical field of measuring tool processing, and more specifically, relates to a processing and manufacturing method of a micrometer for size measurement. Background technique [0002] In industries such as processing and manufacturing, measuring tools are a necessary tool for measurement, and their accuracy is directly related to the quality of the product. Vernier calipers and micrometers are commonly used for length measurement, and their accuracy is relatively high. The micrometer is also called a spiral micrometer. It is a more precise length measuring instrument than a vernier caliper. It is mainly composed of a fixed ruler frame, measuring anvil, micrometer screw, fixed sleeve and other components, but because its measuring length can be accurate to 0.01mm, so the dimensional stability of the ruler frame, micrometer screw, etc. and the hardness of the measuring anvil are the direct influence factors of its accuracy. At...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00C22C38/30C21D9/00C21D1/32C21D1/18G01B3/18
CPCB23P15/00C21D1/28C21D1/32C21D9/0068C22C38/02C22C38/04C22C38/30
Inventor 钱根来
Owner WUXI YICHEN MOLD TECH