High-accuracy numerical-control roundness correction machine

A high-precision, rounding technology, used in the field of rolling machines, can solve the problems of reducing precision, increasing the gap, unable to keep the gap between the work rolls stable, etc., and achieving the effect of improving the rounding accuracy and the force balance.

Active Publication Date: 2014-03-26
NANTONG CHAOLI ROLLING MACHINE PRODUCING
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AI Technical Summary

Problems solved by technology

However, the traditional screw and nut transmission pair works through sliding friction, and the accuracy is reduced due to the increased gap caused by friction during use.
The hydraulic cylinder cannot maintain the stability of the gap between the work rolls due to the compressibility of its working medium (hydraulic oil) during rounding, which affects the roundness accuracy

Method used

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  • High-accuracy numerical-control roundness correction machine

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Embodiment Construction

[0012] see figure 1 , the specific embodiment adopts the following technical scheme: it comprises upper roll 1, lower roll 2, lower roll drive mechanism 3, lower roll drive mechanism 4, PLC controller 5, and it also comprises lead screw drive mechanism 6 and displacement sensor 7 ; Both sides of the upper roller 1 are respectively connected with the screw transmission mechanism 6, and one side of the lower roller 2 is provided with a displacement sensor 7, and the displacement sensor 7 is connected with the PLC controller 5.

[0013] This specific implementation method adopts the following process: it divides the rounding process into N passes. First, the lower roller 2 of each pass drives the forward and reverse rotation of the workpiece for 1-2 weeks. The upper roller 1 and the two lower rollers 2 The distance between the center lines gradually decreases according to 1-N passes, and then gradually increases according to N-1. The residual stress in the workpiece goes through ...

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Abstract

The invention discloses a high-accuracy numerical-control roundness correction machine and relates to the technical field of veneer reeling machines. The roundness correction machine comprises an upper roller (1), a lower roller (2), lower roller transmission mechanisms (3), a lower roller drive mechanism (4), a programmable logic controller (PLC) (5), lead screw transmission mechanisms (6) and a displacement sensor (7). Two sides of the upper roller (1) are connected with the lead screw transmission mechanisms (6) respectively, and the displacement sensor (7) is arranged on one side of the lower roller (2) and is connected with the PLC (5). According to the roundness correction machine, traditional screw nut transmission pairs or hydraulic cylinders are replaced, and space between center lines of the upper roller and the lower roller can be accurately adjusted.

Description

Technical field: [0001] The invention relates to the technical field of plate rolling machines, in particular to a high-precision numerical control rounding machine. Background technique: [0002] The process of bending sheets into cylinders by roll forming technology has been widely used in the fields of automobile exhaust pipes, pump manufacturing, ventilation engineering, printing plate making and even military manufacturing. However, the circularity precision of the prepared cylinder after welding is low, which affects the expansion of its application range and the full utilization of materials. In order to overcome the above defects, it is necessary to round the workpiece after welding the rolling cylinder. Most of the current rounding process uses conventional plate rolling machines, which is labor-intensive and low-precision. The above-mentioned defective also all exists in a few so-called automatic circle-calibrating machines. [0003] The main working parts of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/14B21D3/02
Inventor 赵非平李森林鲁世红
Owner NANTONG CHAOLI ROLLING MACHINE PRODUCING
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