High-impulse impact testing machine using multi-stage electromagnetic acceleration

Abstract

To solve such a problem that, although an impact test is specified by JIS and ISO, testing methods with various mechanisms are employed depending on a test object or material, large energy impulse is required in order to obtain high impact force, however, controlling such large energy is difficult.SOLUTION: The present invention has found a structure for generating and controlling large energy with a compact structure by employing a multi-stage energy generation device that sequentially accelerates and accumulates energy in a small space and a simple delivery structure for energy with a multi-stage structure. The structure includes an electromagnetic acceleration mechanism activated by electrical signal triggering and an energy transmission mechanism using hammer collision as unit structures and has the unit structures in multi-stages. There is provided an impact testing machine that obtains larger impulse energy through the mechanisms. The impact testing machine obtains multi-dimensional large impulse energy in a small space by combining the mechanisms.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an impact testing machine, which is composed of a mechanism having a large number of stages in series of an electromagnetic acceleration collision mechanism composed of an electromagnetic accelerator and a collision weight. For this purpose, it can be combined according to the required directions such as one-dimensional, two-dimensional, three-dimensional, etc., and relates to an impact testing machine that can give a high impact in a small space.

Background Art

[0002] The breakage of products and parts is caused by fatigue damage due to fine vibrations and large impacts. Methods of destructive testing by impact include electromagnetic, hydraulic, and drop methods. Electromagnetic and hydraulic devices are large in size, and the costs of the device body, installation, and maintenance are high. The drop test can be stably reproduced, but in order to obtain a large force, a height, which is a distance, is required, and this also makes the device large. In addition, for repeated tests, the operation of pulling up the drop weight and the test object is indispensable, which is laborious and time-consuming, and the replacement of the drop weight involves labor, time, and the risk of replacement work. Therefore, various test methods with different mechanisms are used depending on the test object and material. The inventor of this case has devised a drop impact test method in a previous invention, and Patent 0505528 has been approved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] To obtain a high impact force, a large energy force product is required. In order to increase the speed of the so-called hammer that generates the impact, a large amount of energy to counteract the inertial force was required. However, controlling a large amount of energy is accompanied by difficulties. Control is required at each stage of energy generation, transmission, and the appearance and response of the impact, and a simple mechanism is desirable for repair and improvement. Impact tests are defined by JIS-K7111-1, ISO 179-1, etc., but various test methods are used depending on the test object and material. In addition, the variation in the test values of strength due to material characteristics may be large, and the number of repetitions is required for determination according to the test method.

Means for Solving the Problems

[0005] Therefore, a multi-stage energy generation device that sequentially accelerates and accumulates energy in a small space and a simple energy transfer structure with a multi-stage structure are used to create and control a large amount of energy in a small structure.

[0006] In the present invention, an electromagnetic acceleration structure that starts operating by an electric signal trigger and an energy transfer mechanism by the collision of a hammer are used as unit structures, and the mechanism has multiple stages of the unit structures. This mechanism is an impact tester that obtains a large force product energy. This mechanism is an impact tester that obtains a large multi-dimensional force product energy in a small space.

Effects of the Invention

[0007] The present invention can reproduce the impacts received by industrial products and products in multiple dimensions, obtain high reliability through repeated tests, and contribute to the design of the object to be tested. And various reliabilities can be ensured in the industrial field.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Description of Symbols

[0009] 1 Accelerated passive transmission hammer part 2 Electromagnetic acceleration part energy generator 3 Impact device alone 4 Acceleration part switch 5 Impact receiver control device 6 Test sample

Claims

【Claim 1】 A test device capable of obtaining a large force product in a small space by combining a large number of stages of electromagnetic acceleration collision mechanisms

Images