A cylindrical grinder that is easy to assemble and maintain

Abstract

The invention discloses a cylindrical grinder easy to assemble and maintain and belongs to the technical field of machine tools. The cylindrical grinder comprises a sleeve, a shell, a cover plate, a grinding wheel and a sliding bearing, the shell is arranged inside the sleeve, two ends of the shell are sealed through the cover plate, the sliding bearing transversely penetrates the shell, and one end of the sliding bearing is connected with the grinding wheel; a ceramic coating is arranged on the sliding bearing and at the contact position of a spindle and a bearing bush, a return oil pipeline is arranged inside the shell and is communicated with a lubricating oil tank on the outer portion of the sleeve, and lubricating oil is circulated in the return oil pipeline in zero-pressure circulation. The ceramic coating is sprayed at the friction position of the spindle and the bearing bush, so that problems about thermal expansion deformation and abrasion of the metal spindle are solved by the aid of outstanding performance of ceramic; meanwhile, according to self structural features of the cylindrical grinder, a brand new oil leakage prevention pipeline is designed for the cylindrical grinder, zero-pressure circulation lubrication of the lubricating oil in an oil cavity is realized, long-term operation is achieved without disassembling the grinder for maintenance, and maintenance cost is greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of machine tools, and more specifically relates to an easy-to-maintain cylindrical grinding machine with long service life of a sliding bearing, stable and reliable operation of a lubrication system, and less oil leakage. Background technique [0002] Cylindrical grinding machine is a kind of grinding machine that uses grinding wheel as tool to grind cylindrical steel parts to obtain precise concentricity. It is widely used in the processing of shaft parts with high precision requirements in automotive engines, military industry, aerospace and other fields. At present, there are mainly the following problems in the use of cylindrical grinding machines: [0003] First of all, during the rotation of the sliding bearing structure of the traditional cylindrical grinding machine, the heat generated by the friction between the metal main shaft and the bearing pad is quite large, and the heat will cause thermal exp...

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Problems solved by technology

[0011] The purpose of the present invention is to solve the problems existing in the existing cylindrical grinding: 1) the metal main shaft and the bearing pad are prone to thermal expansion and deformation due to friction, which makes it difficult to adjust the gap between the main shaft and the bearing pad during the assembly process; 2) during the use of the cylindrical grinding machine, due to the Abrasion, aging of rubber seals, frequent dismantling of the machine will cause great damage to internal components, high maintenance costs and waste of manpower in the later period. A cylindrical grinding machine that is easy to assemble and maintain is provided; The parts are sprayed with ceramic coating, and the excellent performance of ceramics is used to solve the problem of thermal expansion, deformation and wear of the metal spindle; at the same time, the present invention abandons the old scheme of using rubber seals for sealing, and according to the structural characteristics of the cylindrical The circular mill has designed a new anti-leakage pipeline, which realizes zero negative pressure circulation lubrication of lubricating oil in the oil chamber, and can run for a long time without dismantling and maintenance, greatly reducing maintenance costs

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