DD207124A3 - METHOD FOR GENERATING DEFINED MECHANICAL ENGINEERING FOR TESTING - Google Patents

Abstract

The invention relates to a method for generating a defined mechanical impact energy for testing electrical characteristics of piezoelectric components in a short time sequence. The aim of the invention is to develop a cost-effective and simple method for generating a defined impact energy for testing purposes. The object of the invention to position by means of a method different piezoelectric components with simultaneous action of a mechanical bias, act with a defined mechanical impact energy on the device and to ensure the measurement of electrical parameters by connecting contacts, is solved by the firing pin of a preferably vertically arranged spring impact system by a Laengs- and rotating movements ausfuehrende, provided with a curved window Zughuelse and released at the end of the adjustable clamping path in the direction of the piezoelectric component, wherein a mechanical biasing element generates an adjustable bias and holds the electrically contacted piezoelectric device in its position and the counterweight optionally can be rigid or sprung.

Description

Häns-Werner clock

P 836

IPK: P 42 C, 1/02

10/19/1981

Title of the invention;

Method for generating a defined mechanical impact energy for testing purposes

Field of application of the invention

The invention relates to a method for generating a defined mechanical impact energy for testing electrical characteristics, in particular on piezoelectric components in a short time sequence.

Characteristic of the known technical solutions

A method for generating a defined impact energy by exploiting the energy of a ball is known, but it has a relatively high overall height and a short time sequence of the test procedures. Furthermore, methods are known in which the required impact energy is generated by means of an electromagnet. The difficult determination of the nominal value of the mechanical energy and its control for reproducibility have a disadvantageous effect. In addition, the required parameters, namely low hatred and high speed of the firing pin can not be achieved with these methods. Mechanisms for the sudden release of movement

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Energy are in the art in the form of jumps (Hilde- 'brandt; "mechanical engineering components", VEB Verlag Technik Berlin, 1967, pp. 766 and 767) widely used, the presence of a certain number of moving parts proves to be a disadvantage.

Object of the invention

It is the object of the invention to develop a cost-effective and simple method for generating a defined mechanical impact energy for testing purposes.

Explanation of the essence of the invention

The invention has for its object to position by means of a method different piezoelectric components with simultaneous action of a mechanical bias to act with a defined mechanical impact energy to the device and to ensure the measurement of electrical parameters by connecting contacts.

According to the invention, the object is achieved by the firing pin of a preferably vertically requested spring-beat system by a longitudinal and rotational movements executing provided with a curved window tension sleeve and released at the end of the adjustable clamping path without additional moving elements in the direction of the piezoelectric component, wherein a mechanical biasing element generates an adjustable bias and holds the electrically contacted piezoelectric device in one layer and the counterweight may be partially rigid or spring-loaded.

The method according to the invention makes it possible to test similar types with different mechanical energy by means of simple spring adjustment in the impact system as well as different types with modified mechanical properties by variation of the impact path via setting standards. which do not influence the process of energy impact and their start on a

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fold way can be electrically triggered.

The solution according to the invention can be used for manual operation or as a station of an automated device.

embodiment

The inventive method will be explained in more detail with reference to an exemplary embodiment and associated schematic drawings

 Show it:

Pig. 1 is a schematic sectional view of a striking device in front view;

Pig. 2: section of the plan view of Fig. 1; Pig. 3: Side view of the impact device after Pig. 1; Pig. 4: Illustration of the tension sleeve with window.

The piezoelectric component 5 is located within the Sinspannung 10 on the support 11 and on the counterpart 17 and is after Pig. 3 biased by the biasing member 9 and the biasing arm 12 with an adjustable force on the spring 13. To measure the electrical parameters, the connections 14 »11 a and 5 a are provided. The one after Pig. 1 in a frame-fixed guide 8 movable firing pin 4 is biased by the pin 7 by means of the lifting surface б a of the tension sleeve б against the spring 3. The tension sleeve б slides under the action of the tension magnet 1 of FIG. 4 with the contour of its window 16 on the frame-fixed bolt 15 from the upper curve piece 16 a to the lower curve piece 16 b. The after Pig. 2 associated rotation of the tension sleeve 5 including lifting surface б a with opening б b relative to the non-rotatable pin 7 causes at the end of the movement, the overlap of pin and opening б b. The firing pin 4 is thus released without additional moving elements down and meets after covering the stroke with defined Schlcgenergie on the piezoelectric component 5 · By varying the bias on the spring 3 by means of the adjusting screw 2 and / or the distance between the guide 3 and Edition -11 different energy values can be achieved.

Claims (1)

234 Λ 86 О Claim Device for generating a defined axi chanic impact energy for testing purposes, consisting of a firing pin whose leadership and an outer sleeve, characterized in that in a preferably vertically disposed spring action system (3) and a longitudinal and rotational movement exporting tension sleeve (6) a cam-like window (16) is provided, the firing pin (4) at the end of the predetermined by the window clamping path by means of a release opening (6 b) in the lifting surface (6a) in the direction of the piezoelectric component (5) is releasably designed and a mechanical biasing element (9) generates an adjustable bias voltage and holds the electrical contacted piezoelectric device in its position, wherein the G-egenmasse may optionally be rigid or spring-loaded. - For 2 pages drawings -