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Broaching test device

A test device and hole-turning technology, which is used in measuring devices, using stable tension/pressure to test the strength of materials, forming tools, etc. The effect of crack expansion and accuracy guarantee

Pending Publication Date: 2019-12-03
广州鑫娄山模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a kind of hole reaming test device, to a certain extent, it solves the problem that the conical head punch in the prior art is driven by hydraulic pressure, and the conical head punch will not stop immediately when the hole reaming is completed, resulting in Excessive cracking at the edge of the hole affects the test results. In addition, the hole reaming test equipment is an integrated structure of mold and equipment, which is a technical problem with limited scope of application.

Method used

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Embodiment Construction

[0036] The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them.

[0037] The components of the embodiments of the application generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application.

[0038] Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0039] In the description of this application, it should be noted that the ter...

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PUM

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Abstract

The invention relates to the technical field of broaching test equipment, in particular to a broaching test device which comprises a rack, a broaching mold and an electric driving mechanism, wherein the broaching mold is detachably arranged on the rack; the electric driving mechanism is used for driving a hole flanging male die of the hole broaching mold to broach the sample, and when the broaching edge of the sample cracks, the electric driving mechanism stops driving the hole flanging male die to continue to conduct broaching operation on the sample. Therefore, the embodiment of the invention provides the broaching test device; in addition, when the broaching edge of the sample cracks, the electric driving mechanism can immediately stop driving the hole flanging male die to continue to conduct broaching operation on the sample, that is to say, the electric driving mechanism responds faster to a stop command than a hydraulic system, crack expanding are avoided, and the accuracy of a test result is guaranteed.

Description

technical field [0001] The present application relates to the technical field of hole reaming test equipment, in particular to a hole reaming test device. Background technique [0002] At present, the hole expansion test is an important part of the metal sheet forming test, and the limit hole expansion rate obtained through the hole expansion test is a key index for evaluating the formability of the metal sheet. The hole reaming test includes two steps: punching the round hole of the sample and pressing it into the hole of the punched sample by using the conical punch. After punching the round hole of the sample, press it into the punched round hole with a conical punch and apply pressure to it by the testing machine until the hole edge (hard edge) of the round hole cracks, and finally measure and calculate the circle The average pore diameter of the hole before and after the hole expansion test, the average pore diameter is the limiting hole expansion rate. However, the e...

Claims

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Application Information

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IPC IPC(8): B21D19/08B21D37/10B21D55/00G01N3/08G01N3/02
CPCB21D19/088B21D37/10B21D55/00G01N3/08G01N3/02G01N2203/0019G01N2203/0067G01N2203/027
Inventor 刘小伟
Owner 广州鑫娄山模具有限公司