Electrically-assisted extrusion drawing testing machine achieving repeated diameter reducing

Abstract

The invention provides an electrically-assisted extrusion drawing testing machine achieving repeated diameter reducing, and belongs to the field of mechanical manufacturing and machining. The electrically-assisted extrusion drawing testing machine comprises a machine base, and a supporting anti-rolling plate capable of reciprocating up and down in the axial direction of the machine base is movablyconnected to the machine base; one side of the supporting anti-rolling plate is provided with an extrusion rod which can reciprocate left and right in the horizontal direction of the machine base andcan extend into the supporting anti-rolling plate; a first electrode binding post is arranged at the end, far away from the supporting anti-rolling plate, of the extrusion rod, and the side, far awayfrom the extrusion rod, of the supporting anti-rolling plate is provided with a composite membrane assembly fixed on the machine base; the composite membrane assembly comprises a plurality of drawingmembranes, the apertures of the drawing membranes are gradually decreased from the end close to the supporting anti-rolling plate to the other end, and a second electrode binding post is arranged onthe drawing membrane close to the supporting anti-rolling plate; and the end, far away from the supporting anti-rolling plate, of the composite membrane assembly is provided with a clamping clamp which can reciprocate back and forth in the horizontal direction of the machine base.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing and processing, and in particular relates to an electrically assisted extrusion-drawing testing machine with multiple diameter reductions. Background technique [0002] The general drawing machine has a large limit on the drawing force and a small amount of deformation in a single pass. It needs multiple drawing to produce the finished product. Because it is only subjected to tensile stress, for some metals with low plasticity and high degree of work hardening When the deformation between the raw material and the finished product is large, it is easy to produce surface cracks or even break. In addition, due to the problem that some materials are difficult to process, it is generally used for light alloys, and the processing objects have certain limitations. [0003] For example, Chinese patent literature discloses an automatic pulling machine [patent application number: CN201620987812.4], w...

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Problems solved by technology

However, when this device is used for some metals with low plasticity and high degree of work hardening, it is easy to produce surface cracks or even break.

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