SU1546223A1

SU1546223A1 - Method and apparatus for single resistance microwelding

Info

Publication number: SU1546223A1
Application number: SU884361855A
Authority: SU
Inventors: Эмиль Валдисович Бумбиерис; Николай Михайлович Старовойтов; Эдуард Георгиевич Москвин; Игорь Борисович Новиков
Original assignee: Рижский политехнический институт им.А.Я.Пельше
Priority date: 1988-01-11
Filing date: 1988-01-11
Publication date: 1990-02-28

Abstract

Изобретение относитс к контактной микросварке и может быть использовано в радиоэлектронике и приборостроении дл приварки проводников малых сечений к контактным площадкам. Цель изобретени - повышение качества сварки путем улучшени электрического контакта между электродами и деталью. К свариваемым детал м подвод т вставку 7, закрепленную на штоке 5, прикладывают усилие к корпусу 1. При перемещении корпуса электроды 10, установленные под заданным углом к оси штока, с электродержател ми 2 прижимают свариваемые детали. В результате деформации электрододержателей рабочие поверхности электродов смещаютс вдоль поверхности свариваемых деталей, создава надежный электрический контакт электрод-деталь-электрод. 2 с. и 1 з.п.ф-лы, 5 ил.The invention relates to contact micro-welding and can be used in electronics and instrumentation for welding small cross-section conductors to contact pads. The purpose of the invention is to improve the quality of welding by improving the electrical contact between the electrodes and the workpiece. The insert 7 attached to the rod 5 is applied to the parts to be welded and force is applied to the housing 1. When the housing is moved, the electrodes 10, mounted at a predetermined angle to the axis of the rod, with the electrodes 2, press the parts to be welded. As a result of deformation of the electrode holders, the working surfaces of the electrodes are displaced along the surface of the parts to be welded, creating a reliable electrical contact electrode-part-electrode. 2 sec. and 1 z.p. f-ly, 5 ill.

Description

Фиг.22

5-55-5

В-ВBb

15 1415 14

| ХХ 99С6бг9бс 0| ХХ 99С6бг9бс 0

Фиг. ЧFIG. H

RR

Фм.5Fm.5

Claims

The claims 25

1. A method of one-sided contact microwelding, in which the parts to be welded are preliminarily pressed by a movable heat sink placed between the electrodes, electrodes are applied, welding pressure is applied and welding current is passed, characterized in that, in order to improve the quality of welding by improving the electrical contact between electrode and component, welding pressure is applied while displacing the electrodes along the surface of the parts to be welded.

2. A device for one-sided contact microwelding, comprising a housing, electrodes mounted parallel to each other in electrode holders made in the form of flat springs, an interelectrode heat sink, a pressure mechanism on the interelectrode heat sink with guides and a spring-loaded rod, and a contact assembly with a welding current switch, characterized in that the electrodes with electrode holders are placed on the housing at an angle to the axis of the spring-loaded rod, and the heat sink insert is rigidly fixed to the rod, mounted with the possibility of reciprocating movement perpendicular to the working surface of the electrodes.

3. The device according to p. 2, characterized in that the electrodes with electrode holders are placed to the axis of the rod at an angle determined from the expression a = 90 ° - 1 / 2arcsin ^

Av · e 'where a is the angle between the axis of the rod and the electrode with the electrode holder;

E is the modulus of elasticity of the material of the electrode holder;

J is the moment of inertia of the electrode holder section;

S - the amount of displacement along the surface of the welded parts;

Av — welding pressure on the electrode;

I is the length of the electrode with the electrode holder.

5-5

Bb

9 FIG. 5

1------------------------------------

FIG. At