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Testing machine for impact test

A test and impact resistance technology, which is applied in the direction of impact test, machine/structural component test, measuring device, etc., can solve the problems of low precision, slow speed, inconvenient operation for operators, etc., to achieve easy testing, firm fixation, Effects of Improving Accuracy and Test Speed

Inactive Publication Date: 2016-01-20
KUSN MINGJIU ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the relative height between the steel ball magnetic base of the testing machine and the lifting guide rod that fixes its height is adjustable. The height positioning of the magnetic base is determined by the scale engraved on the lifting guide rod. This method exists as follows Disadvantages: After the steel balls of different diameters are attracted by the magnetic seat above it, due to the different diameters, the magnetic seat needs to be adjusted to any scale, and some addition calculations are required, which will be inconvenient for the operator to use
The height of the magnetic seat is mostly adjusted manually, which is slow and has low precision, which often leads to inaccurate test results

Method used

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  • Testing machine for impact test
  • Testing machine for impact test
  • Testing machine for impact test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as Figures 1 to 4 As shown, a test machine for impact resistance test includes a test stand 1 and a test frame installed on the test stand 1 . The test frame includes a lead screw 3, two guide columns 2, a slide table 4, a beam 5, and a motor 9. Lead screw and guide post 2 are all vertically installed on the test bench 1, and lead screw 3 is positioned at the center of two guide posts 2, and lead screw 3 can rotate, and guide post 2 is fixed. A crossbeam 5 for fixing the motor 9 is installed on the tops of the two guide posts 2 , and the upper end of the leading screw 3 is connected with the main shaft of the motor 9 . The slide table 4 cooperates with the lead screw 3 through the screw pair, and cooperates with the guide post 2 through the moving pair. A horizontal support 10 is installed on the slide table 4, and a downward magnetic base 6 and a laser range finder 11 are installed on the support 10; the bottom end surface of the magnetic base 6 is at the same ...

Embodiment 2

[0025] In the present invention, the positioning block 7 includes a vertical portion and a horizontal portion connected to the vertical upper end, and the side of the positioning block 7 used for positioning is the inner side of the two aforementioned two.

[0026] Working process and principle of the present invention

[0027] Determine the test height H according to the test requirements and select the steel ball, then start the motor 9 to control the sliding table 4 to descend until the bottom surface of the magnetic base 6 is in contact with the steel ball, and then pause. At this time the height is H 1 (ie steel ball diameter D). Then start motor 9 to control slide table 4 to rise to height H 2 Make H 2 =H+H 1 Pause, the magnetic seat 6 is demagnetized so that the steel ball falls freely to the surface of the measured object 8. Finally, start the motor 9 to make the slide table 4 descend again and absorb the steel balls to continue the test. Every time a steel ball ...

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Abstract

The present invention discloses a testing machine for an impact test, comprising a testing bench, and a testing frame arranged on the testing bench. The testing machine is characterized in that: the testing frame comprises a screw, two guide posts, a sliding table, and a motor for driving the screw to rotate, wherein both the screw and the guide posts are vertically arranged on the testing bench, the screw is rotatable, and the guide posts are immovable; the tops of the two guide posts are provided with a cross beam used for fixing the motor, the upper end of the screw is connected with a main shaft of the motor; the sliding table cooperates with the screw through a screw pair, and cooperates with the guide posts through a moving pair; the sliding table is provided with a horizontal support, the support is provided with a magnetic base and a laser range finder which face the lower side; the bottom end face of the magnetic base and an emitting end of the laser range finder are located at the same height. The testing machine has the beneficial effects that: traditional manual positioning is replaced by a screw and motor mechanism, thus accuracy and testing speed can be greatly improved; positioning blocks not only can limit a tested object to move in the horizontal direction, but also can limit the tested object to move in the vertical direction, so that firmer fixing is achieved, and the test is facilitated.

Description

technical field [0001] The invention belongs to the technical field of testing equipment, and in particular relates to a testing machine for impact resistance testing. Background technique [0002] Electronic devices with screens, such as notebook computers, tablet computers, mobile communication terminals, liquid crystal screens, etc., need to test the impact resistance of the finished products to be tested when they are made or assembled. [0003] At present, the relative height between the steel ball magnetic base of the testing machine and the lifting guide rod that fixes its height is adjustable. The height positioning of the magnetic base is determined by the scale engraved on the lifting guide rod. This method exists as follows Disadvantages: After the steel balls of different diameters are attracted by the magnetic base above them, due to the different diameters, the adjustment to the scale of the magnetic base requires some addition calculations, which will be incon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
Inventor 张月霞
Owner KUSN MINGJIU ELECTROMECHANICAL