Spring structure applied to machine tool

Abstract

The invention provides a spring structure applied to a machine tool and belongs to the technical field of machinery. The spring structure applied to the machine tool comprises an upper plate, a lowerplate and compression springs disposed between the upper plate and the lower plate, wherein the quantity of the compression springs is two; an air cylinder is disposed between the two compression springs; the lower end of the air cylinder is fixedly connected to the lower plate; a connecting rod is disposed in the air cylinder; the upper end of the connecting rod is fixedly connected to the upperplate; sealing is formed between the side wall of the lower end and the inner wall of the air cylinder; an annular blocking shoulder is formed on the inner wall of the lower end of the air cylinder; the inner cavity of the air cylinder is divided by the annular blocking shoulder into an upper cavity and a lower cavity; a sealing plate is disposed in the upper cavity; the outer diameter of the sealing plate is smaller than the inner diameter of the upper cavity; the sealing plate is in slide connection with the air cylinder; the sealing plate is pressed against the annular blocking shoulder andseals an upper port of the annular blocking shoulder; a telescopic spring which gives the sealing plate a trend to move upwards and opens the upper port of the annular blocking shoulder is disposed in the lower cavity; an air hole communicating with the upper cavity is formed in the side wall of the air cylinder in a through manner; an air nozzle communicating with the air hole is fixed outside the air cylinder; and an air vent communicating with the lower cavity is formed in the lower plate in a through manner. The spring structure provided by the invention has high accuracy.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a machine tool accessory, in particular to a spring structure for a machine tool. Background technique [0002] A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials are deformed under the action of external force, and return to their original shape after the external force is removed. [0003] Existing springs such as a compression spring disclosed in the Chinese Patent Library [Application No.: 201620912062.4] include a spring body, the two ends of the spring body are provided with end face fixing panels, the spring body is a pair of cylindrical hollow spiral bodies, and the fixing panels are with fixed The round pancake panel of the buckle of the two helical bodies of the spring body, the buckle is arranged on the outside of the spring body along the direction parallel to the central axis of the spring body. [0004] The above-mentioned co...

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Problems solved by technology

[0004] The above-mentioned compression spring achieves the cushioning effect through the two spring bodies, but because the buffer range of the two spring bodies is fixed, the cushioning accuracy is not good, and it cannot meet the needs of high-precision working conditions

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