Switch pure silver contact point hard-rolling tool for ships

Abstract

The invention relates to a switch pure silver contact point hard-rolling tool for ships. The switch pure silver contact point hard-rolling tool for ships comprises ahard-rollingwheel and a supportingseat, and the supporting base comprises a bottom plate, a slant plate, two positioning plates and two supporting plates. The hardness of the pure silver contact point is improved by means of rolling hard. A pure silver contact point plane has a certain angle alpha with the bottom surface of a contact, and the tool can convert the angle alpha to be horizontal. The slant plate positions the angle, pin holes position height and alignment degree, and the supporting plates can support the contact forcefully. The horizontal action of a milling machine table and the rolling of the hard-rolling are used for rolling and pressing the contact point plane, the upper and lower positions of a milling head can be adjusted by using a dial of the milling machine self, and the rolling pressing amount can beadjusted. The switch pure silver contact point hard-rolling tool is used for rolling hard, the problem of low hardness of the pure silver contact point can be solved simply and effectively, the structure of the tool is flexible, and the contact can get accurate positioning and strong supporting; the adjustable property and generality are high, and the tool is suitable for various contacts; and after the tool is adjusted, frequent disassembly is not required, the connect is just required to be installed and disassembled, and the operation is simple.

Description

Technical field [0001] The invention relates to a pure silver contact rolling hard tooling, in particular to a pure silver contact rolling hard tooling for a ship switch. Background technique [0002] At present, in my country's switch manufacturing industry, the requirements for marine switches are getting higher and higher. The most critical part of the switch is the contact. The core part of each contact is the contact. Some marine equipment has a large power. To withstand a large current, this requires high electrical conductivity and thermal conductivity of the contacts. Therefore, the switches of some marine high-power equipment use pure silver (silver content ≥ 99.9%) as contacts, because the electrical conductivity of silver Both electrical and thermal conductivity are the highest, and the higher the purity of silver, the higher the electrical and thermal conductivity. [0003] However, pure silver has an obvious disadvantage as a contact point, that is, its hardness ...

AI Technical Summary

Problems solved by technology

[0004] At present, in order to improve the hardness of silver contacts, the method of adding other metals to silver, such as silver-copper alloy, is usually used. Although this improves the hardness of silver contacts, it reduces its electrical conductivity and thermal conductivity, which affects the switch. reliability and service life

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