A Conjugate Transverse Shear Design Method for Planar Link Mechanism

A planar linkage mechanism and design method technology, applied in calculation, special data processing applications, instruments, etc., can solve problems affecting tool life and unsatisfactory shearing performance
CN104077452BActive Publication Date: 2017-01-25DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2017-01-25

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Abstract

The invention discloses a method for designing conjugate traverse shearing for a two-degree-of-freedom, and single-ring and double-ring fully-hinged planar linkage mechanism. The method comprises the following steps of: 1) setting a shearing mechanism coordinate system; 2) setting the corner relationship between two motivity members; 3) applying coordinate conversion to establish the line equation of a linkage dynamic shear blade; 4) establishing the conjugate envelope equation of the linkage dynamic shear blade; 5) educing the speed equation of a point on a linkage envelope line; 6) establishing the scale optimization model of the shearing mechanism, taking the minimum fitting error of a dynamic shear blade envelope line and a straight line in a shearing range, and the tendency of the speed of a point on a weighing envelope line to zero as targets, and taking a superposition amount, the opening degree of a non-shearing range, and a linkage length as constraint conditions; 7) solving the optimal solution by a genetic algorithm to obtain the dimensions and parameters of the mechanism. The method is capable of improving shearing quality, ensuring orderliness, no step and no deformation of a shearing section, reducing the scratches and wear of the shear blade, and prolonging the service life of the shear blade.
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Description

technical field

[0001] The invention relates to a design method of a plane linkage mechanism conjugate transverse shear, which belongs to the technical field of metal plate transverse shear machinery. Background technique

[0002] The metal plate transverse shearing mechanism is an important equipment in the heavy plate production line of heavy industry enterprises, and is mainly used to cut the rolled steel plate to length. Its characteristic is that the upper cutting edge of the connecting rod is in the shape of a circular arc, and the fixed lower cutting edge is a straight line segment. Usually, this kind of shearing machine is also called a rolling shear. This kind of shearing machine has the advantages of good cutting quality, high cutting efficiency, long cutting blade life and low transmission power, and is widely used.

[0003] In 1971, Sidmona Newman Company (MDN for short) successfully developed the rolling shear mechanism for the first time, and it has been rapid...

Claims

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