JPH0529057A - Manufacture of contact pin - Google Patents

Abstract

PURPOSE:To intend less variation and high precision of a bending angle at the tips of set comb-type teeth by giving age hardening treatment to a pin material which is obtained by bending the tips of the comb-type teeth using a mill-hardened material. CONSTITUTION:A BeCu mill-hardened material is formed by etching into comb- type teeth. The tips of the comb-type teeth are bent and made into a pin material 13. The pin material 13 is given heat treatment and precipitation-hardened. The pin material 13 is temporarily molded with liquid crystal polymer. Then, the temporarily molded is polymerized into a pin material 16 which is approximated to the pin material 13 in shape, and really molded with liquid crystal polymer 17. The rear end is cut into a required length and finally ground and tapered to manufacture a contact pin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a contact pin used in an IC inspection device (handler).

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a contact pin for the above-mentioned purpose, a strip 1 made of BeCu (Be1.8 to 2.0%) shown in FIG. 6 is etched or pressed to form a comb tooth as shown in FIG. Shape, then bend the tips of the comb teeth 2 to form an internal angle of 120 ° as shown in FIG.
Aged at 315 ° C for 2 hours, then Au-plated, and then put the two sheets on top of each other, as shown in Fig. 9.
After molding with resin 3, as shown in FIG. 10, the base end is cut into a required length, and finally the rear end is polished and a taper 4 is attached to form a contact pin 5.

By the way, the above manufacturing method uses BeCu.
Since (Be 1.8 to 2.0%) has a low hardness of Hv 210, heat treatment is performed to make it hard, but at that time, the bending angle of the tip of the comb tooth 2 that has been bent is varied due to spring back. In addition, the mold wraps around and peels off, which causes foreign matter to intervene and dust to accumulate. Therefore, the contact pin 5 cannot secure a stable contact during use.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is to provide a method for producing a contact pin having a predetermined hardness and a predetermined bending angle, which is free from mold wrapping and peeling.

[0005]

A method for manufacturing a contact pin according to the present invention for solving the above-mentioned problems is to form a strip of a BeCu mill-hardened material into a comb-like shape by etching or pressing, and then to obtain the required shape. Cut into the length of, and bend the tip of the comb teeth to the required angle to form a pin material,
Next, this pin material is subjected to age hardening treatment, then this pin material is temporarily molded with a liquid crystal polymer, and then the temporary molded product is polymerized into a pin material of approximately the same shape as the above-mentioned pin material, and this is molded with a liquid crystal polymer. It is characterized by being molded.

[0006]

As described above, in the method for manufacturing a contact pin according to the present invention, the mill hardened material (heat treated) is used to age the pin material obtained by bending the tips of the comb teeth to obtain the required hardness. The hardness can be obtained, and the variation in the bending angle of the set tip of the comb teeth is extremely small, and the accuracy is high. When the age hardening treatment temperature is lower than 290 ° C, the hardness becomes Hv 380 or less, and when it exceeds 310 ° C, the hardness becomes Hv 420.
From the above, 290 to 310 ° C is preferable, and the age hardening treatment time is optimally 2 hours.

In the method for manufacturing a contact pin of the present invention, a comb-shaped pin material is temporarily molded with a liquid crystal polymer, the temporary molded product is polymerized with a pin material having substantially the same shape, and the main molding is performed with a liquid crystal polymer. Since the molding is performed in two steps, the liquid crystal polymer does not wrap around or peel off, and the dimensional accuracy can be maintained.

[0008]

EXAMPLE An example of the method for producing a contact pin of the present invention will be described. The BeCu mill-hardened material shown in FIG. 1, in this example, the heat-treated Be2% Cu having a hardness of 290 Hv.
60 mm wide, 0.25 mm thick strip of (material C1720) 10
2 is formed by etching into a comb-teeth shape as shown in FIG. 2, and a comb-teeth 11 having a width of 1.5 mm, a length of 64 mm and a total length of 68 mm is 1.79 mm.
Get 20 at intervals. Next, as shown in FIG. 3, the tips of the comb teeth 11
The pin material 13 was formed by bending 12 at a position with a length of 4 mm so that the inner angle was 120 degrees. Next, use this pin material 13 for 300
Heat treatment at ℃ for 2 hours, precipitation hardening, hardness 400 ± 20Hv
I said. Next, this pin material 13 was temporarily molded with a liquid crystal polymer 14 as shown in FIG. Then, as shown in FIG. 5, the temporary molded product 15 is superposed on a pin material 16 having substantially the same shape as the pin material 13 and is permanently molded with a liquid crystal polymer 17, and then the rear end is made to have a required length. Was cut, and finally the rear end was polished and tapered to manufacture a contact pin 18.

50 contact pins 18 manufactured in this way
When the bending angle of the tip portion 12 of the comb tooth 11 in was measured, the maximum was 121 degrees, the minimum was 119 degrees, and the average was 120 degrees. In addition, when the quality of these 100 contact pins 18 was inspected, the tips 12 of the comb teeth 11 were
There was no wraparound of the liquid crystal polymers 14 and 17 and peeling of the liquid crystal polymers 14 and 17 from the pin materials 13 and 16, and the dimensional accuracy was maintained, and the quality was good.

[0010]

As described above, according to the method of manufacturing a contact pin of the present invention, it is possible to obtain a highly accurate contact pin having a predetermined hardness and a very small variation in the bending angle of the tip end portions of the set comb teeth. Be done. In addition, since the contact pin is made by molding in two steps, there is no wraparound of the liquid crystal polymer to the tip of the comb teeth and no peeling from the pin material, and dimensional accuracy can be maintained and good quality can be obtained. When used as a (handler), stable contact can be secured.

[Brief description of drawings]

FIG. 1 is a diagram showing steps of a method for manufacturing a contact pin according to the present invention.

FIG. 2 is a diagram showing steps of a method for manufacturing a contact pin according to the present invention.

FIG. 3 is a diagram showing steps of a method for manufacturing a contact pin according to the present invention.

FIG. 4 is a diagram showing steps of a method for manufacturing a contact pin according to the present invention.

FIG. 5 is a diagram showing steps of a method for manufacturing a contact pin according to the present invention.

FIG. 6 is a diagram showing steps of a conventional method of manufacturing a contact pin.

FIG. 7 is a diagram showing steps of a conventional method of manufacturing a contact pin.

FIG. 8 is a diagram showing steps of a conventional method of manufacturing a contact pin.

FIG. 9 is a diagram showing steps of a conventional method of manufacturing a contact pin.

FIG. 10 is a diagram showing steps of a conventional method for manufacturing a contact pin.

[Explanation of symbols]

 10 Band material 11 Comb teeth 12 Tip 13 Pin material 14 Liquid crystal polymer 15 Temporary molded product 16 Pin material 17 Liquid crystal polymer 18 Contact pin

Claims (1)

Claim: What is claimed is: 1. A strip of BeCu mill-hardened material is formed into a comb-tooth shape by etching or pressing, and is then cut to a desired length so that the tip of the comb-tooth is cut into a desired shape. Bent at an angle to form a pin material, then age-harden this pin material, then temporarily mold this pin material with a liquid crystal polymer. A method for producing a contact pin, which comprises polymerizing with a pin material, and then performing main molding with a liquid crystal polymer.