JPH0510851A - Compression wear test device - Google Patents

Abstract

PURPOSE:To obtain a compression wear test device for enabling a reliability evaluation to be executed simply and quantitatively in a form which is closer to an actual situation. CONSTITUTION:Compression test is performed by pressing a first test body 11 at a press side to a second test body 13 at a side to be pressed. Also, by generating a stress in a direction which is vertical to the press direction for the second test body 13 according to a stress which is generated between the first and second test bodies 11 and 13 by this press, the second test body 13 is slid for the first test body 11, thus enabling a wear test to be performed simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression wear test apparatus, and more particularly to a compression wear test apparatus suitable for use in a reliability evaluation test of test bodies such as mechanical parts and materials.

[0002]

2. Description of the Related Art In mechanical parts or the like, when a certain part is pressed or displaced, the part comes into contact with another part, so that the contact surface between the two parts may be worn by sliding. It is often seen.

Conventionally, a reliability evaluation test against repeated compression and wear in such a case is shown in FIG.
As shown in FIG. 2, the pressurizing section 32 to which the first test body 31 is attached is attached to the second test body 34 supported on the base 33.
And a compression test performed by moving it up and down with respect to the pressurizing unit 3 to which the first test body 31 is attached, as shown in FIG.
2 is separately carried out by a constant load type wear test in which the second test body 34 carried on the base 33 is moved in the horizontal direction while applying a constant load, and the test evaluation in individual modes is performed. Was being done.

[0004]

However, when compression and wear occur at the same time, sliding often occurs according to the magnitude of the compressive stress and displacement, and the individual evaluation of the compression test and the constant load wear test is performed. Although it is possible to use the result as a substitute characteristic, it may be different from the actual failure mode, so the final evaluation must be a product evaluation. on the other hand,
In the case of product evaluation, it is difficult to obtain quantitative data because variations of individual parts are also taken into consideration, and
It is also disadvantageous in terms of cost and man-hours.

The present invention has been made in view of the above-mentioned points, and since it is possible to simultaneously evaluate the wear caused by sliding caused by compressive stress (displacement), the reliability evaluation can be simplified in a more realistic manner. An object of the present invention is to provide a compression wear test device that can be quantitatively implemented.

[0006]

A compression wear test apparatus according to the present invention comprises means for pressurizing a pressure-side first test body against a pressure-side second test body, and a first means for applying this pressure. ，
And a means for generating a stress in a direction perpendicular to the pressurizing direction with respect to the second test body according to the stress generated between the second test bodies.

[0007]

In the compression wear test apparatus according to the present invention, the first
When the first test body moves to the second test body while the compression test is performed between the second test body and the second test body by moving up and down.
The second test body is caused to generate a stress in a direction perpendicular to the pressurizing direction according to the stress (displacement) generated when the second test body is struck by the first test. A wear test is also conducted at the same time because the wear occurs by sliding on the body.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing a first embodiment of the present invention. In the figure, the first test body 11 on the pressurizing side of the mechanical parts and the like is attached to a pressurizing unit 12 provided so as to be movable in the vertical direction in the figure, while the second test on the pressurized side of the mechanical parts and the like is performed. The body 13 is carried on a slide table 14 provided so as to be movable in the left-right direction (horizontal direction) in the drawing.

The pressurizing unit 12 is vertically moved by being driven by a vertical drive mechanism 15 including a pressurizing cylinder by hydraulic pressure or pneumatic pressure, an eccentric cam or the like via a rod 16, and is vertically moved. Is pressed against the second test body 13. Similarly to the drive mechanism 15, the slide table 14 is driven by a horizontal drive mechanism 17 including a pressure cylinder, an eccentric cam, and the like via a rod 18, and a direction perpendicular to the pressure direction of the pressure unit 12. That is, it moves in the horizontal direction.

Stress is generated when the pressurizing portion 12 descends and the first test body 11 hits the second test body 13, and the stress generated at this time is a load gauge 19 having a known structure. Detected by. The horizontal drive mechanism 17 that drives the slide table 14 in the horizontal direction is responsive to the detection output of the load gauge 19 in the slide table 1.
By moving 4 in the horizontal direction, the second test body 1
A horizontal stress is generated with respect to 3.

According to the compression wear test apparatus of the first embodiment having such a structure, the first test body 11 moves up and down to perform the compression test with the second test body 13, and The horizontal stress is generated in the second test body 13 in accordance with the stress (displacement) generated when the first test body 11 hits the second test body 13
Since the test body 13 of 1 slides with respect to the first test body 11, wear occurs between the two test bodies 11 and 13, and the wear test is simultaneously performed.

FIG. 2 is a block diagram showing a second embodiment of the present invention, in which the same parts as in FIG. 1 are designated by the same reference numerals. In this embodiment, the structure for driving the first test body 11 in the vertical direction is the same as that of the first embodiment, but the first test body 11 is replaced with the second test body 13. The structure is characterized in that a horizontal stress is generated in the second test body 13 in accordance with the stress (displacement) generated when it strikes.

That is, in order to generate a stress in the horizontal direction with respect to the second test body 13, a base 21 having an inclined surface 21a having a predetermined inclination angle is provided, and on the inclined surface 21a of the base 21 is provided. A slide table 22 carrying the second test body 13 is slidably provided in the. The slide table 22 is biased to the upper end side of the inclined surface 21a by a spring 23 which is a biasing member.

According to the compression wear test apparatus of the second embodiment having such a structure, the first test body 11 moves up and down to perform the compression test with the second test body 13, and When a stress is applied to the second test body 13 via the first test body 11, this stress causes a stress in the slide table 22 in the direction along the inclined surface 21 a of the base 21.

This stress causes the spring 23 to bend,
The slide table 22 slides obliquely downward. At this time, the stress generated between the first and second test bodies 11 and 13 is decomposed into a vertical component and a horizontal component. These decomposition components are determined by the inclination angle of the inclined surface 21a of the base 21, the spring constant of the spring 23, the downward stroke or the downward pressure of the pressurizing unit 12.

As can be understood from the above, by arranging the slide table 22 carrying the second test body 13 on the inclined surface 21a of the base 21, the lowering stroke or the lowering pressure of the first test body 11 can be achieved. Therefore, it is possible to apparently generate a horizontal stress in the second test body 13 according to the above, so that the compression test and the wear can be performed without separately providing a drive mechanism for horizontally driving the second test body 13. It will be possible to evaluate the tests simultaneously.

In the second embodiment, the distribution of stress in the compression direction and the sliding direction can be freely selected according to the inclination angle of the inclined surface 21a of the base 21. Regarding the stress and sliding distance, the spring 23
It can be freely set by selecting the spring constant of.

[0018]

As described in detail above, according to the present invention, the compression test between the first test body and the second test body is performed by the vertical movement of the first test body, and at the same time, the first test body is tested. A wear test is performed at the same time by generating a stress in a direction perpendicular to the pressurizing direction with respect to the second test body in accordance with the stress (displacement) generated when hits the second test body. Therefore, it is not necessary to individually evaluate wear caused by sliding caused by compressive stress (displacement), and reliability evaluation can be easily and quantitatively performed in a form closer to the actual situation.

The slide table carrying the second test body is slidably arranged on the inclined surface of the base, and the slide table is biased toward the upper end side of the inclined surface. Since it is not necessary to separately provide a drive mechanism for driving the second test body in a direction perpendicular to the pressurizing direction, it is possible to obtain a sliding motion according to a compressive stress (displacement) with a simple structure. Become.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a second embodiment of the present invention.

3A and 3B are configuration diagrams showing a conventional example, in which FIG. 3A shows a compression test device and FIG. 3B shows a wear test device.

[Explanation of symbols]

11,31 1st test body 12,32 Pressurizing unit 13,34 Second test body 14,22 slide table 15 Vertical drive mechanism 17 Horizontal drive mechanism 19 load gauge 21,33,43 base 23 spring

Claims (3)

[Claims] 1. A first test body on the pressure side and a second test body on the pressure side.
A compression wear test device for performing a compression test and a wear test with the test body of claim 1, comprising: pressurizing means for pressurizing the first test body against the second test body, and the pressurizing means. A stress generating means for generating a stress in a direction perpendicular to the pressing direction with respect to the second test body in response to a stress generated between the first and second test bodies by pressurization. Characteristic compression wear tester. 2. The stress generating means, a detecting portion for detecting a stress generated between the first and second test bodies, and the second
2. A moving member that carries the test body of claim 1 and is movable in the vertical direction, and a driving unit that drives the moving member according to the detection output of the detection unit. Compressive wear test equipment. 3. The stress generating means comprises a base member having an inclined surface, a sliding member carrying the second test body and slidably provided on the inclined surface, and the sliding member. 2. The compression wear test apparatus according to claim 1, further comprising a biasing member that biases the upper end of the inclined surface.