CN216926364U

CN216926364U - Tensile property detection equipment for bar-shaped metal test piece

Info

Publication number: CN216926364U
Application number: CN202123392138.5U
Authority: CN
Inventors: 王刚; 张剑睿; 刘珂; 赫志航; 赵子龙
Original assignee: Huacai Technology Luoyang Co ltd
Current assignee: Huacai Technology Luoyang Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-08
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a tensile properties check out test set of bar metal test piece, includes lower dop and the last dop that is used for block test piece both ends, check out test set still includes base, slider, uide bushing and reset spring, the uide bushing is connected with the drawing head of stretcher, goes up the dop and slides from top to bottom and set up in the uide bushing's uide bushing, and the uide bushing outer wall is equipped with and makes things convenient for the test piece to get into the inside hole of dodging of dop, go up and be equipped with the reset spring that is used for going up the dop and resets between dop and the uide bushing, the base is fixed on the workstation of stretcher, and the slider passes through the slide rail and slides and set up on the base, and the dop is installed on the slider down, the vertical projection of going up the dop lies in dop sliding path down. The utility model can fixedly clamp test pieces with different lengths, the test pieces are very convenient and simple to install and fix, and a preliminary pre-tightening force can be applied to the test pieces before the test pieces are subjected to tensile test, thereby being beneficial to improving the test performance of materials.

Description

Tensile property detection equipment for bar-shaped metal test piece

Technical Field

The utility model relates to the technical field of metal tensile test equipment, in particular to tensile property detection equipment for a bar-shaped metal test piece.

Background

For a metal material, the tensile property is one of items needing important detection in the development, inspection and production processes of the metal material, and the plastic property index and various strength indexes obtained in the detection process are key parameters for reflecting the performance of the metal material.

The method for the tensile test of the metal material comprises the steps of putting a metal sample to be tested in a metal tensile testing device, and setting a certain tensile rate by using a computer, wherein the metal tensile testing device applies an average tensile force to the metal sample, and the test is usually stopped after the metal material is broken. The plasticity performance index and the strength index measured in the test process are very important mechanical performance parameters. Wherein, the plasticity index mainly comprises the reduction of area and the elongation after fracture, and the strength index mainly comprises the yield strength and the tensile strength. Through the performance indexes, the mechanical properties of the metal material can be basically known. The clamping method of the sample is crucial to success of the tensile test, if the sample cannot be clamped, the test cannot be carried out necessarily, and if the clamping method is unreasonable, the sample is easy to slip or break in a jaw, so that the test data is inaccurate or low.

At present, the tensile test of a bar-shaped metal test piece is generally to clamp the upper end and the lower end of the test piece by hydraulic claws (three-jaw type), and then detect the tensile property of the test piece by the axial movement of a slider. The test piece needs to be held by hand, the upper end of the test piece is placed in a station formed by the three-petal type clamping jaw of the pull head, the clamping jaw clamping function is started, the upper end is clamped tightly, then the pull head moves downwards, the lower end of the test piece is placed in a station formed by the three-petal type clamping jaw of the base, the clamping jaw clamping function is started, the lower end is clamped tightly, the operation process of the clamping mode is complex, the test piece is inconvenient to fix, and the test efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and the defects and provides stretching performance detection equipment for a bar-shaped metal test piece.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a tensile properties check out test set of bar metal test piece, includes lower dop and the last dop that is used for block test piece both ends, check out test set still includes base, slider, uide bushing and reset spring, the uide bushing is connected with the drawing head of stretcher, goes up the dop and slides from top to bottom and set up in the uide bushing's uide bushing, and the uide bushing outer wall is equipped with and makes things convenient for the test piece to get into the inside hole of dodging of dop, go up and be equipped with the reset spring that is used for going up the dop and resets between dop and the uide bushing, the base is fixed on the workstation of stretcher, and the slider passes through the slide rail and slides and set up on the base, and the dop is installed on the slider down, the vertical projection of going up the dop lies in dop sliding path down.

As a further optimization of the tensile property detection device of the bar-shaped metal test piece, a return spring is arranged between the upper chuck and the top side of the guide sleeve.

As a further optimization of the tensile property detection equipment of the bar-shaped metal test piece, a plurality of return springs are arranged between the upper chuck and the bottom side of the guide sleeve at equal angles.

As the further optimization of the tensile property detection equipment of the bar-shaped metal test piece, the avoidance hole on the outer wall of the guide sleeve is of a T-shaped structure.

The utility model has the following beneficial effects:

firstly, can fix the centre gripping to the testpieces of different length.

Secondly, the test piece is very convenient and simple to install and fix.

And thirdly, a preliminary pre-tightening force can be applied to the test piece before the test piece is subjected to tensile test, so that the test performance of the material is improved.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of example 2;

fig. 3 is a schematic view of the connection relationship between the chuck and the guide sleeve on the detection device.

Reference numerals: 1. the device comprises a base, 2, a sliding block, 3, a lower clamping head, 4, a guide sleeve, 5, an upper clamping head, 6 and a return spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

Referring to fig. 1, a tensile property detection device for a bar-shaped metal test piece, which comprises a lower chuck 3 and an upper chuck 5 of a special tool for tensile test provided by patent application No. 201520700790.4, and further comprises a base 1, a slider 2, a guide sleeve 4 and a return spring 6, wherein the guide sleeve 4 is connected with a stretching head of a stretching machine, as shown in fig. 3, the upper chuck 5 is arranged in a guide hole of the guide sleeve 4 in a vertical sliding manner, and the guide sleeve 4 is controlled to ascend through the control of the stretching machine, so that the upper chuck 5 is controlled to ascend to provide power for the tensile test piece, the detection device further comprises other due structures required by the metal tensile test, such as the stretching machine with the existing model of WDW-100E, an upper computer used for controlling the test operation, and the like.

The outer wall of the guide sleeve 4 is provided with an avoiding hole which is convenient for a test piece to enter the interior of the upper chuck 5, a reset spring 6 used for resetting the upper chuck 5 is arranged between the upper chuck 5 and the guide sleeve 4, the reset spring 6 is arranged in two mounting modes, one mode is that the reset spring 6 is arranged between the upper chuck 5 and the top side of the guide sleeve 4, as shown in figure 2, and the other mode is that a plurality of reset springs 6 are arranged between the upper chuck 5 and the bottom side of the guide sleeve 4 at equal angles. Under the condition that the return spring 6 does not bear any force, the return spring 6 can control the opening of the upper chuck 5 to correspond to the avoiding hole of the guide sleeve 4, and the upper end of a test piece is conveniently arranged in the upper chuck 5. When the inside of dop 5 and lower dop 3 is gone into all to the card in test piece both ends, the test piece can drive dop 5 and glide in the guiding hole of uide bushing 4, and reset spring 6's elasticity can do all can to last dop 5, and dop 3 has a preliminary pretightning force to the test piece under the cooperation, is favorable to improving the test performance of material.

The base 2 is fixed on a workbench of a stretcher, the sliding block 2 is arranged on the base 2 in a sliding mode through a sliding rail, the lower clamping head 3 is arranged on the sliding block 2, and the vertical projection of the clamping head 5 is located on the sliding path of the lower clamping head 3. When the upper end of the test piece is clamped into the interior of the upper clamping head 5, the test piece is in a vertical state, the test piece is pulled down to be corresponding to the lower clamping head 3, the lower clamping head 3 is pushed to move, the lower clamping head 3 moves to a position corresponding to the vertical projection of the upper clamping head 5, the lower end of the test piece can be directly led into the interior of the lower clamping head 3 to be fixed, and the test piece is convenient and simple to fix.

A return spring 6 is arranged between the upper chuck 5 and the top side of the guide sleeve 4. The avoidance hole on the outer wall of the guide sleeve 4 is of a T-shaped structure. The T-shaped structure is to prevent the test piece from slipping out of the inside of the upper chuck 5.

When carrying out the tensile test, need earlier inside dop 5 is gone into to the upper end card of test piece, then pull down the test piece, make the lower extreme of test piece correspond with dop 3 down, then dop 3 removes under promoting, move to the position that corresponds with the vertical projection of last dop 5 when it, can be directly with the inside of the leading-in lower dop 3 of lower extreme of test piece, make it accomplish the fixed at test piece both ends, the elasticity of back reset spring 6 can do all can to last dop 5 again, dop 3 has a preliminary pretightning force to the test piece under the cooperation, start through the control stretcher at last, make uide bushing 4 rise, dop 5 rises in the control, dop 3 does all can detect to the test piece under the cooperation.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the above-described specific embodiments, and various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the essence of the present invention.

Claims

1. The utility model provides a tensile properties check out test set of bar metal test piece, includes lower dop (3) and last dop (5) that are used for block test piece both ends, its characterized in that: check out test set still includes base (1), slider (2), uide bushing (4) and reset spring (6), uide bushing (4) are connected with the tensile head of stretcher, go up dop (5) and slide the setting from top to bottom in the uide bushing of uide bushing (4), uide bushing (4) outer wall is equipped with and makes things convenient for the test piece to get into the inside hole of dodging of dop (5), it is equipped with reset spring (6) that are used for dop (5) to reset to go up between dop (5) and uide bushing (4), base (1) are fixed on the workstation of stretcher, and slider (2) slide the setting on base (1) through the slide rail, and lower dop (3) are installed on slider (2), the vertical projection of going up dop (5) is located dop (3) sliding path down.

2. The tensile property detection apparatus of a bar-shaped metal test piece according to claim 1, wherein: and a return spring (6) is arranged between the upper chuck (5) and the top side of the guide sleeve (4).

3. The tensile property detection apparatus of a bar-shaped metal test piece according to claim 1, wherein: a plurality of return springs (6) are arranged between the upper chuck (5) and the bottom side of the guide sleeve (4) at equal angles.

4. The tensile property detection apparatus of a bar-shaped metal test piece according to claim 2 or 3, wherein: the avoiding hole in the outer wall of the guide sleeve (4) is of a T-shaped structure.