Bending-torsional non-linear variable-diameter tube pressed mould manufacture method

Abstract

The invention discloses a production method of a crankled non-linear reducer pipe suppressing clamping fixture, which comprises the following steps: a three-dimensional hardware model of a tubular component by employing computer-aided design software is created; and a part of models are divided into two parts to produce a left and a right half tubes; taking the centre of the tube for reference, a plane is identified as a floor flat of the clamping fixture, equant points are made on the centre line of a reducer pipe, and three-dimensional coordinates of the equant points are recorded; taking the equant points as the reference, the left and the right half tubes on the flat vertical to the floor of the clamping fixture is cut, and the geometry of the section outline is extracted; according to the extracting data, the shapes of the convex and the concave mould boards are cutted by using CNC cutting equipment and polish transition grooves; according to three-dimensional coordinate data of the equant points, the space positions of the convex and the concave mould boards on the floor flat of the clamping fixture are respectively fixed; make a transition board, and the transition board and the convex and the concave mould boards are welded into a whole, then the overall on the floor flat of the clamping fixture is welded, thereby completing the suppressing of the clamping fixture.

Description

technical field [0001] The invention relates to a method for manufacturing a mold for pressing pipe fittings, in particular to a method for manufacturing a mold for pressing molds for bending and torsion nonlinear variable-diameter tubes with complex spatial shapes. Background technique [0002] Due to special circumstances in the decoration industry or industry, it is often necessary to design some steel pipes into special shapes, such as: bending-torsion nonlinear variable-diameter tubular members, whose shape is complex, and its bending-torsion or nonlinear diameter-reducing is basically irregular and irregular. In other words, cast steel is usually used to form the pressed molds required for the production of such shaped tubular components. The traditional casting process is generally realized by steps such as "sand casting-grinding wheel scraping-three-dimensional sample inspection". The process method cannot well guarantee the accuracy and manufacturing quality of spec...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the drawbacks in the above-mentioned prior art, the present invention provides a manufacturing method of bending and torsion nonlinear variable-diameter tube pressing mold. And the technical problems of complex mold shape and difficult positioning, get rid of the problems of high cost, large error and long time period in the production of this type of mold by traditional technology

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