CN2575652Y - Etching device capable of making sample rotate automatically - Google Patents

Abstract

The utility model relates to a composite measurement device of dent resistance test for metal materials, which is suitable for the dent resistance assessment test of the surface of metal sheets with larger curvature, and comprises a base, a transmission mechanism and a raising and lowering column, wherein the transmission mechanism is arranged on the base and enables the composite measurement device to rotate, and the raising and lowering column provided with a scale is connected with the base and is vertical with the base; a beam provided with a scale is glidingly arranged on the raising and lowering column in the horizontal direction of the base, a displacement measuring sensor with a probe head is glidingly arranged on the beam; a horizontal displacement measuring device provided with a scale is arranged at one side of the base. The utility model has the advantages of simple structure and convenient operation.

Description

Comprehensive measuring equipment for dent resistance test of sheet metal

technical field

The utility model relates to a comprehensive measuring device for the test of the dent resistance of metal materials, in particular to a method for measuring the dent depth and method of the metal material surface during the process of evaluating the dent resistance of metal parts covered with multi-curved surfaces. A measuring device for measuring angles.

Background technique

For example, in the automotive industry, the outer cover of an automobile is a multi-curved part, and it needs to bear a high load. If it collides with it, it can bear a high load and can undergo a small deformation, then It shows that the better its dent resistance, in the test process of evaluating the dent resistance of the outer covering, in order to ensure the authenticity of the test results, the loading system of the testing machine is required to apply a normal load to the test part of the test piece. Measure the depth of the depression at the test site. At present, there is no complete and unified comprehensive measuring equipment for measuring the normal angle at the test place of the outer covering and measuring the depth of the depression at the test place after loading.

Contents of the invention

The purpose of this utility model is to provide a kind of comprehensive measuring equipment of metal material dent resistance test, which is especially suitable for the determination of the normal line of the test point and the measurement of the dent depth in the process of the dent resistance test of the outer cover of the multi-curved surface, and It has simple structure and convenient operation.

In order to achieve the above-mentioned purpose, the utility model provides a comprehensive measuring device for metal material dent resistance test. The base is vertical to the base and has a lifting column with a scale; in the horizontal direction of the base, there is also a beam that is slid on the lifting column and has a scale, and a vertical displacement measuring sensor with a probe is slid on the beam; on one side, A horizontal displacement measuring device with a ruler is also provided.

On the base, a column locking mechanism that can adjust the column is also provided;

On the column, a crossbeam locking mechanism capable of fixing the crossbeam is also arranged;

On the crossbeam, a horizontal fixing mechanism capable of fixing the vertical displacement sensor and the horizontal displacement measuring device is also arranged;

Described vertical displacement sensor is a digital indicator;

The ruler of the horizontal displacement measuring device is a micrometer.

The utility model has the advantages that it is especially suitable for the determination of the normal line of the test point and the measurement of the depth of the dent during the dent resistance test of the metal plate with multi-curved surfaces and large curvature, and is an essential measurement system for the dent resistance test. It is especially suitable for the evaluation of the dent resistance of the surface of the automobile outer cover. On the basis of ensuring the levelness and verticality, it can conveniently locate the test point, ensure the load provided to the normal direction of the test point and measure the depth of the dent. The authenticity and comparability of test results provide the necessary guarantee, and its structure is simple and easy to operate.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is an explanatory diagram of the depth of the depression.

Detailed ways

A preferred embodiment of the present utility model is described below according to Fig. 1 and Fig. 2 .

As shown in Fig. 1, the utility model comprises a base 1, is arranged on this base 1 and can make the rotation mechanism 2 of this utility model rotate, one connects base 1 and is vertical with this base 1, and the elevating column 4 with scale , in the horizontal direction of the base 1, there is also a crossbeam 8 slidingly arranged on the lifting column 4 and with a scale, and a vertical displacement measuring sensor 7 with a probe 71 is slid on the crossbeam 8; Displacement measuring device 9. On the base 1, a column locking mechanism 3 with an adjustable column 4 is also set; on the column 4, a beam locking mechanism 5 that can fix the beam 8 is also set; on the beam 8, a fixed vertical displacement sensor 7 and The horizontal fixing mechanism 6 of the horizontal displacement measuring device 9;

The following is the working principle of the utility model for measuring the depth of the depression:

Rotate the turning mechanism 2 so that the crossbeam 8 is located above the test point, adjust the lifting column 4 and the crossbeam 8 through the column locking mechanism 3 and the crossbeam locking mechanism 5, so that the probe 71 of the vertical displacement measuring sensor 7 touches the vicinity of the test point; Adjust the horizontal fixing mechanism 6 and rotate the rotating mechanism 2, so that the probe of the vertical displacement measuring sensor 7 is correctly positioned to the test point; record the displacement reading X1 (mm) of the vertical displacement measuring sensor 7 and the readings on the lifting column 4 and the beam 8 at this time Rotate the rotating mechanism 2 to make the probe 71 of the vertical displacement measuring sensor 7 deviate from the test point; to load the test point, carry out the test point sag test; after the test point is loaded, adjust according to the readings on the above-mentioned lifting column 4 and crossbeam 8, Make the probe 71 of the vertical displacement measurement sensor 7 return to the original test point, record the displacement reading X2 (mm) of the vertical displacement measurement sensor 7 at this time, and then obtain the depression depth d (mm)=X2-X1.

The following is the working principle of the utility model for measuring the normal angle of a curved surface:

First, according to the surface shape of the test piece and the drawing, determine the maximum curvature plane orientation and the normal angle measurement path of the test point; rotate the rotating mechanism 2, the column locking mechanism 3, and the beam locking mechanism 5, and adjust the lifting column 4 and the beam 8, so that The beam 8 is located in the largest curved surface plane of the test point, and the horizontal fixing mechanism 6 is adjusted so that the probe 71 of the vertical displacement measurement sensor 7 is in contact with the test point and is located in the normal angle measurement path, and the column locking mechanism 3 is rotated to make the lifting column 4. Fix and rotate the horizontal fixing mechanism 6 at the same time, so that the probe 71 of the vertical displacement measuring sensor 7 is in good contact with the test point, and the symmetrical position (X1, X2) on both sides of the test point is adjusted to X1= by the horizontal displacement measuring device on the beam 8 X2; read the measured value Y1, Y2 of sensor probe 71 at X1, X2 place by vertical displacement measurement sensor 7 simultaneously; Get Y=(Y1+Y2)/2, and record. From tgα=Y/X1 or Y/X2, obtain the angle α between the vertical axis of the platform, that is, the normal angle at the test point.

The above-mentioned vertical displacement measuring sensor 7 is a digital display dial gauge, and its measurement accuracy can reach ±0.001 mm. The above-mentioned horizontal displacement measuring device 9 is a micrometer, and its measurement accuracy can reach ±0.02 mm.

The recess depth is described below:

The test point is generally taken at the place where the curvature of the metal plate is relatively small (the stiffness is relatively small, and the undulation phenomenon is serious), and the whole part will collapse under the normal load at the test point, as shown in Figure 2, ΔY=Hd+ Hb+Hg;

When the test point is taken at the place where the curvature of the outer cover of the automobile is small (the stiffness is relatively large and the undulation phenomenon is not obvious), the whole part has no collapse under the normal load at the test point, Hb, Hg=0, ΔY= Hd.

When the edge of the test piece is fixed, Hg=0.

The utility model provides a correct basis for the evaluation of the dent resistance of multi-curved surfaces, especially metal plates with large surface curvatures, ensures the measurement of the normal angle of the test point and the depth of the dent, and contributes to the authenticity and comparability of the test results. Sex provides the necessary guarantees. It is especially suitable for the test of evaluating the surface dent resistance of automobile outer covering parts.

Claims (8)

1. A comprehensive measuring device for the dent resistance test of sheet metal, which is applicable to the evaluation test of the dent resistance of the sheet metal surface with larger curvature, and is characterized in that it comprises a base, and one is arranged on the base and enables the comprehensive The rotating mechanism for the measurement equipment to rotate, a lifting column connected to the base and perpendicular to the base, and with a scale; in the horizontal direction of the base, there is also a beam with a scale slid on the lifting column, and a probe with a probe is slid on the beam. A vertical displacement measuring sensor; on one side thereof, a horizontal displacement measuring device with a scale is also arranged. 2. The comprehensive measuring device for the dent resistance test of metal sheets as claimed in claim 1, wherein a column locking mechanism capable of adjusting the column is also provided on the base. 3. The comprehensive measuring equipment for the dent resistance test of metal sheets as claimed in claim 1 or 2, characterized in that, on the said column, a beam locking mechanism capable of fixing the beam is also arranged. 4. The comprehensive measuring equipment of metal plate dent resistance test as claimed in claim 3, is characterized in that, on described beam, also be provided with a horizontal fixing mechanism that can fix vertical displacement sensor and horizontal displacement measuring device. 5. The comprehensive measuring equipment for the dent resistance test of sheet metal as claimed in claim 3, wherein said vertical displacement sensor is a digital display dial gauge. 6. The comprehensive measuring equipment for the dent resistance test of metal plates as claimed in claim 3, wherein said horizontal displacement measuring device is a micrometer. 7. The comprehensive measuring device for the dent resistance test of metal sheets as claimed in claim 4, wherein the accuracy of the vertical displacement sensor is ±0.001 mm. 8. The comprehensive measuring equipment for the dent resistance test of metal sheets as claimed in claim 4, wherein the accuracy of the horizontal displacement measuring device is ±0.02 mm.

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