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Method for enhancing rigidity of bayonet of stainless steel vernier caliper

A vernier caliper card and a vernier caliper technology are applied in the field of vernier calipers, which can solve the problems of easy cracking, lack of stable hardness, and slight effect, and achieve the effect of improving the hardness of the bayonet.

Inactive Publication Date: 2009-03-11
韩德庆
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  • Description
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AI Technical Summary

Problems solved by technology

In order to make the bayonet part have a higher hardness without losing the characteristics of stainless steel, some companies have improved the quenching process, but with little success. The main problem is that cracks are prone to appear after the hardness is high, even if it is fully tempered. Less than stable hardness

Method used

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  • Method for enhancing rigidity of bayonet of stainless steel vernier caliper

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0010] figure 1 It is a structural schematic view of the vernier caliper of the present invention. The present invention aims at the deficiencies of the existing vernier caliper, combined with the transformation experience, works hard on the selection of the material of the vernier caliper, and selects a 6Cr16 material with high carbon content and high Cr content, which is subjected to high-frequency quenching It can stably make the hardness reach 58HRC. However, due to the high price of this material, considering the economy of the finished product, the main ruler body is divided into two parts: the ruler body 1 and the ruler head 2. The ruler body 1 is made of 4Cr13 material with slightly lower hardness and cheaper price. The head 2 is made of 6Cr16 material with high hardness, the ruler body 1 and the ruler head 2 are fixedly connected together by butt welding, ...

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Abstract

The invention relates to a method for improving the hardness of a bayonet of a stainless steel vernier caliper, which is characterized in that: the main caliper body of the vernier caliper is divided into two parts of a caliper body and a caliper head, wherein, the caliper head is made of 6Cr16 materials, the caliper body is made of 4Cr13 materials, and the caliper body and the caliper head are fixedly connected together by butt-weld; and the whole body of a vernier is made of the 6Cr16 materials. The method adopts the 6Cr16 materials to manufacture the caliper head of the vernier caliper and the vernier, which greatly improves the hardness of the bayonet simultaneously, and does not cause the price of the vernier caliper to rise considerably, thus meeting general needs of the market.

Description

technical field [0001] The invention relates to a vernier caliper, in particular to a method for improving the hardness of a stainless steel vernier caliper bayonet. Background technique [0002] The vernier caliper is a commonly used instrument for measuring length in industry. It consists of a ruler body and a vernier that can slide on the ruler body. There are measuring claws on the ruler body and the vernier. The inner measuring claw can be used to measure the width of the groove and the inner diameter of the pipe. The outer measuring claw can be used to measure the thickness of the part and the outer diameter of the pipe. The depth gauge is connected with the vernier. Can measure the depth of grooves and cylinders. [0003] Everyone in the measuring tool industry knows that the bayonet hardness of stainless steel calipers is not as high as that of carbon steel calipers. The stainless steel caliper is made of 4Cr13 stainless steel, which is not completely stainless ste...

Claims

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Application Information

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IPC IPC(8): G01B1/00G01B3/20
Inventor 韩德庆
Owner 韩德庆
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