Alignment Method for Machining Large Shaft Parts on Lathe

Abstract

The invention discloses an alignment method of machining large-sized shaft parts on a lathe, and relates to the technical field of machining. The alignment method comprises the following steps of: adopting a novel dial indicator adsorption manner for adsorbing a dial indicator on a chuck; pressing a measuring head of the dial indicator at a part, close to a jack catch, of the excircle of a workpiece; and adjusting the range of the offset amount requirement on the jack catch through the offset amount of a measuring workpiece. The alignment method has the beneficial effects that the alignment method is used for aligning the large-sized shaft parts; the alignment of the dial indicator can be completed through one-time adsorption, thereby improving the working efficiency; meanwhile, after alignment, the coaxiality of the center lines of a part and a main shaft of the lathe and the perpendicularity of the center line of the part and the chuck are relatively accurate, thereby ensuring the normal proceed of subsequence machining.

Description

technical field [0001] The invention relates to an alignment method for processing parts on a lathe, in particular to an alignment method for processing large shaft parts on a lathe, and belongs to the technical field of mechanical processing. Background technique [0002] When processing large shaft parts on a lathe, the clamping method is used to clamp the four-jaw chuck at the head of the bed centering at the top of the bed. This clamping method cannot be quickly centered, and the operator needs to spend a lot of time using a dial gauge to The error of the part center and the machine center is adjusted to a reasonable range. The conventional alignment method is cumbersome and time-consuming, and requires multiple measurements and adjustments at different positions to complete the alignment. Its biggest disadvantage is that it is not easy to make the workpiece centerline perpendicular to the lathe chuck, and non-vertical workpieces will produce periodicity during high-spee...

AI Technical Summary

Problems solved by technology

[0002] When processing large shaft parts on a lathe, the clamping method is used to clamp the four-jaw chuck at the head of the bed centering at the top of the bed. This clamping method cannot be quickly centered, and the operator needs to spend a lot of time using a dial gauge to The error of the part center and the machine center is adjusted to a reasonable range

The conventional alignment method is cumbersome and time-consuming, and requires multiple measurements and adjustments at different positions to complete the alignment. Its biggest disadvantage is that it is not easy to make the workpiece centerline perpendicular to the lathe chuck, and non-vertical workpieces will produce periodicity during high-speed rotation. The centrifugal force, the periodic centrifugal force transmitted to the jaws will cause the jaws and the workpiece to slip on the contact surface. Over time, the wear of the jaws will increase, and the workpiece will easily loosen during processing.

If it is not detected and shut down in time, the workpiece may be thrown out or dropped, which is a great hidden danger to the safety of operators and equipment