A cross wedge rolling mill for forming tiny shafts

Abstract

The invention discloses a cross wedge rolling mill for forming a micro shaft part. The cross wedge rolling mill comprises a main machine and a power and drive system, wherein the main machine comprises a left rack and a right rack which are fixedly connected on a foundation, an upper roll supported by an upper roll bearing seat and a lower roll supported by a lower roll bearing seat which are symmetrically arranged in the left rack and the right rack, and a pressing mechanism; the lower roll bearing seat is fixedly connected on the left rack and the right rack; a rolling guide rail is fixedly connected on one sides in the left rack and the right rack; the upper roll bearing seat is fixedly connected with the rolling guide rail; an upper roll system can move up and down in the perpendicular direction; the pressing system adopts stepping motors and ball screws as power; and through control of the stepping motors, nuts of a ball screw pair can drive a pressing rack plate to move up and down to drive the upper roll bearing seat to move up and down, and a roll clearance of the upper roll and the lower roll is adjusted. According to the cross wedge rolling mill, high-efficiency forming and high-precision rolling of the micro shaft part are achieved, utilization rate of materials is high, and pollution to the environment is low.

Description

technical field [0001] The invention relates to metal rolling, in particular to a cross wedge rolling mill for forming tiny shafts. Background technique [0002] With the rapid development of micro-electro-mechanical devices and micro-system technology, miniature shafts are being used more and more widely. At present, one of the forming methods of miniature shafts is to use miniature shaft turning. However, due to the small diameter of micro shafts, it is impossible to use the tip and similar auxiliary systems to complete the processing, and its efficiency and accuracy are difficult to meet the market demand. [0003] After searching, it is found that the Chinese patent with publication number 204672695U discloses a two-roll cross wedge rolling mill, which can be used to roll and form relatively large shafts, but it cannot meet the needs of small shafts. production requirements. Contents of the invention [0004] In view of the above existing problems, the present invent...

AI Technical Summary

Problems solved by technology

At present, one of the forming methods of miniature shafts is to use miniature shaft turning. However, due to the small diameter of micro shafts, it is impossible to use the tip and similar auxiliary systems to complete the processing, and its efficiency and accuracy are difficult to meet market demand.

[0003] After searching, it is found that the Chinese patent with publication number 204672695U discloses a two-roll cross wedge rolling mill, which can be used to roll and form relatively large shafts, but it cannot meet the needs of small shafts. production requirements

Images