Eccentrically adjustable tailstock

Abstract

The invention discloses an eccentrically adjustable tailstock, which includes a tailstockbody and a tip mounting sleeve. A first mounting hole is horizontally formed in the tailstock body, the tip mounting sleeve is slidably mounted on the first mounting hole, a tip mounting hole for tip mounting is horizontally formed in the front end of the tip mounting sleeve, the tip mounting hole and the tipmounting sleeve are eccentrically arranged, and a second mounting hole is vertically formed in the top of the tailstock body; and a sliding groove is formed in the outer side wall of the tip mountingsleeve in the axial direction, the sliding groove communicates with the second mounting hole, the second mounting hole is provided with a rotatable adjusting shaft, an eccentric part which extends into the sliding groove and is eccentric relative to the axis of the adjusting shaft is arranged at the bottom of the adjusting shaft, the eccentric part abuts against two opposite side walls of the sliding groove, and the faces of the eccentric part abutting against the side walls of the sliding groove are both spherical. According to the eccentrically adjustable tailstock, the position of a top canbe dynamically adjusted, and the coaxiality error of the tip axis and the spindle axis reach a qualified acceptable range value.

Description

technical field [0001] The invention belongs to the technical field of machine tool tailstocks, in particular to an eccentrically adjustable tailstock. Background technique [0002] The tailstock of the lathe is used to process long-axis parts, and plays the role of supporting and centering the workpiece. On different processing lengths of the machine tool, if the center of the tailstock remains unchanged in the X and Y directions relative to the center of the spindle (X direction is the feeding direction of the turning tool, and the Y direction is the vertical direction), then the taper of the processed parts is different, and the performance is that the shorter the processed workpiece, the larger the taper. Moreover, the accuracy of the machine tool bed itself also has tolerances, which will lead to the need to adjust the position of the tailstock center at different processing lengths to achieve the best processing accuracy. At the same time, due to workpiece shape errors...

AI Technical Summary

Problems solved by technology

Moreover, the accuracy of the machine tool bed itself also has tolerances, which will lead to the need to adjust the position of the tailstock center at different processing lengths to achieve the best processing accuracy. At the same time, due to workpiece shape errors, position errors, assembly adjustment errors, etc. Factors, no matter how you adjust, the axis of the main shaft and the axis of the top of the tailstock will never be completely coaxial, and the only way to reduce the error value of this misalignment is to minimize the error value of the different axes. The traditional adjustment method is to disassemble the tailstock and reassemble the sliding surface of the tailstock body. Sticking plastic, scraping, adjusting the coaxiality with the main shaft, this method of assembly adjustment to reduce the error value of different shafts to a minimum value is very uneconomical, time-consuming and laborious, and will greatly increase the number of operators. Adjust the workload of the machine tool

Images