JPS622479A - Manufacture of sliding piece - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing slider pieces used in precision variable resistors, slip ring devices, and the like.

(Prior art and its problems) Conventionally, in order to manufacture slider pieces used for precision variable resistors, slip ring devices, etc., first, a strip-shaped base material 1 is intermittently fed as shown in FIG. 1a. , is punched out into a predetermined shape by press working, and a contact mounting protrusion 2 is formed in the center as shown in Figure 1.
A base material 4 having a plurality of parallel brush contact mounting protrusions 3 on the outside is formed, and the contact mounting protrusions 2 and brush contact mounting protrusions 3 at the center of the base material 4 are bent upward. Then, as shown in FIG.
Next, as shown in FIG. 1d, the brush contact 6 is resistance welded to the brush wire mounting protrusion 3 on the outside of the base material 4 on the spacer 6a side, and then the brush of the brush contact 6 is welded as shown in FIG. 1e. The slider piece 8 was made by bending the tip of the wire 6b to form the contact portion 7.

By the way, in such a method of manufacturing a slider piece, in order to make the center contact of the slider piece 8, the strip-shaped base material 1 is sequentially punched out by press working to form the base material 4, and each of the base materials 4 is punched out by pressing. Since the contact material 5 is resistance welded one by one to the top end of the contact mounting protrusion 2 provided in the center of the contact mounting protrusion 2, there are many steps, resulting in poor productivity and high cost.

(Object of the Invention) The present invention was made to solve this problem, and aims to provide a method for manufacturing a slider piece that requires fewer steps and has good productivity.

(Structure of the Invention) In the method of manufacturing a slider piece of the present invention, as shown in FIG. This clad strip material 10 is intermittently fed progressively and punched out into a predetermined shape base material 11 as shown in FIG. A contact piece 13 having a contact portion 12 is formed, and a protrusion 3 for attaching a brush wire formed on the outer side is bent upward and inclined, a welding projection 14 is formed at the tip thereof, and then a protrusion 3 for attaching a brush wire is formed at the tip thereof. A brush wire 6b is resistance welded to the protrusion 3 by projection 14 as shown in FIG. 2C, and then the tip of the brush wire 6b is bent as shown in FIG. This is characterized in that the slider piece 15 is made by using the same method.

In this way, the method for manufacturing a slider piece of the present invention is as follows:
5, a contact strip material 9 is pressure-welded to the center of the strip-shaped base material 1 to make a clad strip material 10, and this clad strip material 10 is intermittently fed progressively and punched by press processing. Just do it. Therefore, as in the past, a strip-shaped base material is punched out to form a base material, and the contact material is resistance-welded one by one to the contact mounting protrusion provided in the center of each base material, which requires precision and is complicated. The process is omitted, and in the manufacturing method of the present invention, it is included in one process of press-working the clad strip material 10 to form the contact piece 13, so not only the process is shortened, but also the sliding Since the contact point at the center of the slider piece 15 is created continuously and the time required to make each piece is extremely short, the manufacturing time for the entire slider piece 15 is shortened and productivity is improved. , and the production cost will be reduced.

Further, since the contact piece 13 at the center of the slider piece 14 is made as described above, unlike the conventional contact piece in which the contact material is resistance welded one by one to the contact mounting protrusion, each contact piece 13 is made as described above. The dimensions and accuracy of the contact piece 13 are high and stable with little variation, resulting in a slider piece 15 of good quality.

Next, specific embodiments of the present invention and conventional examples will be described.

(Example) As shown in Fig. 2a, in the center of the band-shaped base material 1 made of nickel silver with a thickness of 0.15 mm and a width of 15 μ+, an A with a thickness of 5 μ and a width of 2 H
A contact strip material 9 made of 30 wt% g-Pd is pressure-welded to produce an inlay-type clad strip material 10, and then this clad strip material 10 is intermittently fed forward and pressed into a predetermined shape as shown in Fig. 2. At the same time, the base material 11 is punched out, and the central part thereof is bent 25 degrees upward from the base end, and the tip is 0.
Width 0.2 including contact portion 12 that can be bent into a semicircular shape of 5 R
Two contact pieces 13 having a length of 5 am and a length of 6 cranes are formed in parallel, and the protrusion 3 for attaching the brush wire formed on the outer side is bent upward by 30 degrees and is then formed on the outer side of the base material 11. As shown in Fig. 2C, 35wt% Pd with a wire diameter of 80μ is attached to the two brush contact mounting protrusions 3 with a width of 1mm and a length of 4mm.
, Ag30wt%, Au10wt%, Pt10-t%,
Brush wire 6b made of Cu14wt% and Zn1wt%
The brush wires 6 are arranged in groups of 5 and resistance welded using a projection 14 with a width of 0.2u and a length of 6fi.
The tip of b was bent as shown in FIG. 2d to form a contact portion 7, thereby making a slider piece 15.

(Conventional example) As shown in Fig. 1a, a band-shaped base material 1 made of nickel silver with a thickness of 0.15 m and a width of 15 m is intermittently fed, and is punched into a predetermined shape by press working. As shown in the figure, the tip width is 1 in the center.
1m long, has a contact mounting protrusion 2 with a length of 6 cranes, and a width of 1 on the outside.
A base material 4 having two brush contact mounting protrusions 3 having a length of 4 m and length 4 is formed, and the contact mounting protrusion 2 and the brush contact mounting protrusion 3 at the center of the base material 4 are arranged in an upward direction. to 2
Then, as shown in FIG.
A contact material 5 made of Ag-Pd 3Q% having a thickness of 0.3 fl is resistance welded, and then a base material 4 is attached as shown in FIG. 1d.
Two brush contact mounting protrusions 3 formed on the outer side of the
Then, five brush wires 6b made of the same alloy as in the example with a wire diameter of 80 μm were arranged to form a wire made of 30 wt% Cu-Ni with a width of 0.7 m, a length of 0.8 fins, and a thickness of 0.2 am. The brush contact 6 resistance welded to the spacer 6a is resistance welded on the spacer 6a side, and then the tip of the brush wire 6b of the brush contact 6 is bent to form the contact portion 7, as shown in FIG. 1e. Then, slider piece 8 was made.

However, when comparing the manufacturing time of the slider piece of the example and the conventional example, it was found that the manufacturing time of the slider piece of the example was about 1/2 that of the manufacturing time of the slider piece of the conventional example. It was found that the time period was shortened and productivity was significantly improved. Further, the contact portion of the center contact piece of the slider piece in the example had little error and high dimensional accuracy, unlike the contact point at the center of the slider piece in the conventional example.

(Effects of the Invention) As detailed above, according to the method of manufacturing a slider piece of the present invention, the contact point at the center of the slider piece is attached to the clad band by pressing the contact strip material into the center part of the strip base material. It is made by making a piece of material, then feeding it intermittently and punching it by press working, so the process is shortened compared to the conventional method, and the manufacturing time for each contact piece is extremely short. The manufacturing time of the entire mover piece is shortened, productivity is improved, and production costs are reduced.

Further, according to the manufacturing method of the slider piece of the present invention, the manufacturing time is as follows:
The contact piece at the center of the slider piece can be made stable with high dimensional accuracy and little variation, resulting in effects such as being able to obtain a slider piece of good quality.

[Brief explanation of drawings]

1A to 1E are diagrams showing the steps of a conventional slider piece manufacturing method, and FIGS. 2A to 2D are diagrams showing the steps of the slider piece manufacturing method of the present invention. Applicant Tanaka Kikinzoku Kogyo Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A contact strip material is pressed onto the center of the strip base material to make a clad strip material, and then this clad strip material is intermittently fed sequentially and punched into a predetermined shape base material by press working, and the center portion is The contact piece is bent upward from the base end to form a contact piece having a bendable contact portion at the distal end, and the protrusion for attaching the brush wire formed on the outside is bent upward and inclined, and then the protrusion for attaching the brush wire is formed. 1. A method for manufacturing a slider piece, characterized in that a brush wire is resistance welded to the brush wire, and then the tip of the brush wire is bent to form a contact part to make a slider piece.