Hot forming cylindrical workpiece geometrical parameter detection device and method

A technology of geometric parameters and detection devices, applied in the direction of measuring devices, instruments, etc., can solve the problems of lack of recording devices, affecting test accuracy, irregularities, etc., and achieve the effects of improving detection efficiency, reducing labor intensity, and increasing life expectancy

Active Publication Date: 2014-07-02
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Abstract
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Problems solved by technology

The disadvantage of the above-mentioned measuring instrument is that the operation is still mainly manual, limited to only measuring the wall thickness difference, lacking a recording device, and the irregular shape of the drawn product will affect the test accuracy

Method used

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  • Hot forming cylindrical workpiece geometrical parameter detection device and method
  • Hot forming cylindrical workpiece geometrical parameter detection device and method
  • Hot forming cylindrical workpiece geometrical parameter detection device and method

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Embodiment Construction

[0016] Below in conjunction with the preferred embodiments, the specific implementation methods provided according to the present invention are described in detail as follows: See the accompanying drawings for details, a device for detecting geometric parameters of thermoformed cylindrical parts, including a bed 5, a headstock 1, and a wall thickness difference tester. Mechanism 3, tail top 4, transmission system 6, programmable controller 8 with display touch screen, spindle box 1 is fixed on one side of bed 5, transmission system 6 is fixed on the outside of this side, transmission system 6 drives spindle box 1 The main shaft 1-1, the workpiece 7 to be tested is installed on the mandrel 1-2 on the main shaft 1-1, the tail top 4 is fixed on the other side of the bed 5, and the wall thickness difference testing device 3 is above the main shaft 1-1. The device is provided with a fixed base 3-1 fixed on the bed 5, a movable base 3-3, two wall thickness difference LVDT sensors 3-4...

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Abstract

The invention relates to a hot forming cylindrical workpiece geometrical parameter detection device. The device comprises a tail rod for a bottom thickness test, an LVDT sensor for the bottom thickness test, a bottom thickness test contact and a hole depth test device. The detection method is as follows: a workpiece to be detected is mounted on a main shaft, a positioning cylinder loosens to enable a tail supporting cylinder to act, a rotary pressing head moves forward and presses the workpiece to be detected, the LVDT sensor for the bottom thickness test tests bottom thickness, the main shaft is rotated, an LVDT sensor for a wall thickness difference test tests wall thickness difference, an LVDT sensor for a hole depth test measures the bore diameter of an inner bore of the workpiece, if a measured value is greater than a specified value, the hole depth is judged to be smaller than the specified value, the workpiece is a defective product, and if any value of the bottom thickness, the wall thickness difference and the hole depth is not up to standard, the value is displayed on a display touch screen, and an alarm is given. The detection method adopts clamping for one time, wall thickness difference and bottom thickness numerical values of two or more points are automatically tested, whether the hole depth is up to standard is judged, the automation degree is high, labor intensity is lowered, and detection efficiency is improved.

Description

technical field [0001] The invention relates to a detection device and a detection method for a geometric parameter of a thermoformed cylindrical part. Background technique [0002] For thermoformed cylindrical parts, especially plastically formed (such as back extrusion forming, back extrusion + drawing forming) or cast-formed deep blind hole cylindrical parts need to be heated in a hot state (the temperature of some steel workpieces reaches 700 -900℃) to detect the bottom thickness, hole depth, and wall thickness difference (the wall thickness difference often needs to check two positions or more than two positions). For a long time, the inspection of this kind of cylindrical parts has been carried out manually using inspection tools to inspect the bottom thickness, hole depth, and wall thickness difference one by one. Some manufacturers use special measuring calipers to inspect the wall thickness difference. The wall thickness of the point, and then use the maximum wall ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/08G01B21/18
Inventor 黄少东金鑫张志明赵祖德赵志翔
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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