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Automatic centering central frame

An automatic centering and steady rest technology, applied in positioning devices, large fixed members, manufacturing tools, etc., can solve complex and high processing and manufacturing problems, and achieve the effect of simple operation, convenient operation and wide application range

Inactive Publication Date: 2008-04-23
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of end face threads and gear boxes, the center frame is relatively complicated and has high requirements for processing and manufacturing.

Method used

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  • Automatic centering central frame
  • Automatic centering central frame

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Embodiment Construction

[0012] As shown in FIG. 1 , the lower pressing rod slide rail 12 is fixed on the middle part of the bracket 1 , and the lower pressing rod 9 is located on the lower pressing rod sliding rail 12 and can slide up and down along the lower pressing rod sliding rail 12 . A chute block 11 is installed on the lower pressing rod 9 . The left large sector gear 2 is fixedly connected to the left connecting rod 8, and is connected to the bracket 1 through the left lower rotary pin 7, and the right large sector gear 2' is fixedly connected to the right connecting rod 8', and is connected to the bracket 1 through the right lower rotary pin 7' Up, can rotate around left and right lower rotary pins 7,7' respectively. The lower left rotary pin 7 and the lower right rotary pin 7' are symmetrically arranged on the support 1 relative to the lower bar slide rail 12. One end of left connecting rod 8, right connecting rod 8 ' is installed on the support 1 by lower left rotary pin 7, lower right ro...

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Abstract

The automatically centering central frame consists of support, left large sector gear, left small sector gear, left pressure lever, right pressure lever, roller, upper rotary pin, right small sector gear, right large sector gear, link rod, sliding block, runner block, lower pressure lever slide rail, lower pressure lever and lower rotary pin. It is one opened structure and realizes three bearing point automatic centering by means of the block-link rod mechanism to drive the sector gear mechanism. The complete linkage of the three bearing points can center shaft work piece of different diameter reliably in the same rotary center. The present invention has the features of reliable design, simple structure, wide application range, etc and is especially suitable for automatic control of central frame by means of pneumatic, hydraulic or other modes.

Description

technical field [0001] The invention relates to a clamping auxiliary tool for a machine tool, in particular to an automatic centering steady frame. Background technique [0002] In the field of mechanical manufacturing, when turning or grinding slender shaft workpieces, the steady rest is often used to support the workpiece to improve rigidity and ensure machining accuracy. The center frame generally adopts the principle of three-point fixed circle to support the slender shaft workpiece. The three support points of the existing machine tool center frame generally cannot be linked. For shaft workpieces with different diameters, the positions of the three points need to be adjusted manually, so that the center of the circle determined by the three points is located on the rotation center of the machine tool, such as: Chinese utility model Patent: "Adjustable center frame" (ZL 200420027852.1), etc. This process often requires the use of measuring tools such as dial indicators...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B23/00B23Q3/18B23Q1/25B23Q1/76
Inventor 段正澄黄禹李斌李勇
Owner HUAZHONG UNIV OF SCI & TECH
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