Self-lubrication cooled type gear shaper spindle structure

Abstract

A self-lubrication cooled type gear shaper spindle structure comprises a spindle, wherein a spindle sleeve is arranged outside the spindle, and is embedded in a tool rest body; an oil inlet and an oil inlet are formed in the upper end of the spindle sleeve; spiral oil grooves are formed in the spindle sleeve; a plurality of ring-shaped cooling grooves are distributed on the excircle of the spindle sleeve; and the lower ends of the ring-shaped cooling grooves are communicated with the spiral oil grooves. According to the invention, the two spiral oil grooves are formed in the spindle sleeve, depending on the reciprocating movement of the spindle, oil is introduced into a friction zone to form a lubricating oil film so as to realize the purpose of lubrication and prevent grinding damage of the spindle; as the ring-shaped cooling grooves are distributed on the excircle of the spindle sleeve, and the lower ends of the ring-shaped cooling grooves are communicated with the spiral oil grooves, only one pair of openings are communicated between every two ring-shaped cooling grooves, and are distributed symmetrically, the lubricating oil flows to each cooling groove in the return process to take away heat of the spindle sleeve, which is generated by friction and impacting, so that the spindle sleeve is ensured to be fully cooled, the thermal deformation of the spindle sleeve becomes very small, and the grinding die of the spindle can be prevented.

Description

technical field [0001] The patent of the present invention relates to the main shaft structure of a gear shaping machine, in particular to a main shaft structure of a gear shaping machine with main shaft rotation and reverse movement. Background technique [0002] On the existing gear shaping machines and many large-scale equipment, the main shaft is often used directly as the main motion for transmitting high power, with high rotation speed, fast reverse motion and high precision. However, since the main shaft is always moving, and the gap between the main shaft and the main shaft sleeve is small, the force is large, the lubrication is insufficient, and the temperature rises rapidly, the main shaft is easy to pull the main shaft sleeve and lock the main shaft. Especially on the gear shaping machine, due to the up and down reciprocating impact movement of the main shaft, the damage of the main shaft will make the tooth direction and tooth shape accuracy of the workpiece out ...

AI Technical Summary

Problems solved by technology

However, due to the fact that the main shaft is always moving, and the gap between the main shaft and the main shaft sleeve is small, the force is large, the lubrication is insufficient, and the temperature is long and fast, the main shaft is easy to pull the main shaft sleeve and lock the main shaft.

Especially on the gear shaping machine, due to the up and down reciprocating impact movement of the main shaft, the damage of the main shaft will make the tooth direction and tooth shape accuracy of the workpiece out of tolerance, and the tool will be directly damaged when the main shaft is locked.

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