JPS5927742A - Working tool - Google Patents

Abstract

PURPOSE:To prevent the abrasion, droop, and transition and deformation of a working material, and to raise the working accuracy, by coating a non-metallic film to the surface of each working tool in case of working of a header. CONSTITUTION:At least one layer or more of a non-metallic film 2 of TiN, SiC, TiC, etc. are coated at least onto the surface of a working part of working tools 1a, 1b. As a result, a coefficient of friction of the working part surface becomes extremely small, and even if the number of man-hour for working reaches hundred thousand times, abrasion droop, and transition and deformation of a working material 3 to the tools 1a, 1b scarcely occur, and metallic coupling scarcely occurs between the working material 3 and the tools 1a, 1b. In this regard, as for thickness of the non-metallic film 2 for coating, 0.01-10mu is desirable, and in case of <=0.01mu, coating is difficult, and also decrease of a coefficient of friction becomes insufficient. Also, in case of exceeding 10mu, the coefficient of friction is not decreased and a cost becomes high.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a processing tool used for processing electrical contacts (hereinafter simply referred to as contacts).

Conventionally, carbon tool net 1 alloy tool steel has been used as the material for header machining tools for electrical contacts, but even machining tools made of such materials suffer from wear, sagging, etc. when machining is performed several thousand to tens of thousands of times. Transfer of the workpiece to the tool, deformation, etc. occur, and the machining accuracy of the workpiece deteriorates significantly, resulting in a decrease in quality.

For this reason, the life of the machining tool is short because the machining tool must be polished or replaced after several thousand machining operations.

The present invention has been made to solve this problem, and aims to provide a long-life machining tool that is resistant to wear, droop, transfer of workpiece material to the tool, deformation, etc.

The processing tool according to the present invention can be used for cutting in belly button processing,
Each processing tool for forming and drilling is characterized in that at least the surface of the processing part is coated with at least one layer of non-metallic film such as TiN, SiC, '1'' iC, etc.

By coating the surface of the machined part with a film of TiN, SiC, i'ic, etc., the coefficient of friction on the surface of the machined part becomes extremely small, and even if the number of machining steps reaches several hundred thousand times, there will be no wear, sagging, or damage to the workpiece. Transfer of material to tool.

There is very little deformation, etc., and metal bonding occurs between the workpiece and the tool. Therefore, the machining accuracy of the workpiece can be maintained and a product of good quality can be obtained.

In addition, in the processing tool of the present invention, "I" to be coated
The thickness of the non-metallic film such as iN, SiC, TiC, etc. is preferably 0.01μ to 10μ. If the thickness is 0.01μ, it is difficult to uniformly coat the processing tool and it is difficult to reduce the coefficient of friction. It is sufficient, and if it exceeds 10μ, Ff! There is no reduction in the coefficient of friction and the cost is high.

Next, in order to clarify the effects of the processing tool according to the present invention, specific examples and conventional examples will be described.

[Example 1] As shown in FIG. 1, a T i N film 2 with a thickness of 1.0 μm was coated on the surface of the cutter 1a and die 1b for cutting a contact wire made of cemented carbide in a header processing machine. The cutter 1a and die 1b have a diameter of 1.9m.
+a Contact 1m material 3 made of Ag-Cd0 wo'J=
500,000 Ill of contact material 4 was obtained by cutting the contact material 4 at intervals of 6.1 mII Jul, but there was no wear, dripping, material transfer, deformation, etc. at the cutting part of the cutter 1a and die 1b, and the contact material 4 was The processing accuracy of material 4 was maintained and the quality was good.

[Example 2] As shown in FIG. 2, a T i N film 6 with a thickness of 1.0 μm was coated on the surfaces of the header processing portions of contact material header processing bunches 5a, 5b and die 5C made of cemented carbide. ,
This header processing punch 5a.

5b, using die 5C, a cylindrical contact material 7 made of heg-NilO with a straight 0.9 fin and a length of 3.6 mm is processed to form a head of silk with a head diameter of 1.6. Thickness 0.6 dragon.

Leg diameter 1.0 Dragon 9 Leg length 1.6 Dragon rivet type contact 8
I got 150,000 pieces of the punch 5a for header processing.

5b, the processing part of the die 5c has wear, droop, material transfer,
No deformation occurred, the processing accuracy of the rivet-type contact 8 was maintained, and the quality was good.

[Conventional Example 1] A contact wire cutting cutter 1a and a die 1b are used to cut a straight line 1.
The contact wire 3 made of Ag-Cd0 with 9 fins has a length of 6.1+
When 50,000 pieces of contact material 4 were obtained by cutting at intervals of I11, wear, droop, material transfer, deformation, etc. occurred in the cutting parts of the cutter 1a and die 1b, and the contact material 4 around the 30,000th piece was cut. From No. 4 onwards, the processing accuracy deteriorated significantly and the quality deteriorated.

[Conventional Example 2] Bandage for contact material header processing similar to Example 2 without coating with 'T' i N film 5 a + 5 b +
0.9 tuna in diameter and 3.6 parts of Ag-N in die 5C
A cylindrical contact material 7 made of tlO weight % is processed to have a head diameter of 1.6+u, a head thickness of 0.6 cotton, and a leg diameter of 1.6 mm.
01. After obtaining 40,000 rivet type contacts 8 with a leg height of 1.5 μm, wear, droop, material transfer, deformation, etc. occurred in the processing parts of the header processing punches 5a, 5b and die 5C. 1
From around the 5,000th glue bed type contact point 8, the processing accuracy deteriorated significantly and the quality deteriorated.

As mentioned above, in the processing tool of the present invention, at least the surface of the processing part is coated with a film of TiN, SiC, Tic, etc., so even if the processing number is tens of thousands to hundreds of thousands of times, the processing part remains intact. Wear, anyone.

It has the excellent effect of being difficult to cause material transfer 3 deformation, has excellent durability, has a long life, and can maintain the machining accuracy of the workpiece to obtain a product of good quality.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the cutting state of the contact wire by the contact wire cutting force/trickle in a header processing machine which is an embodiment of the processing tool of the present invention, and Fig. 2 is another embodiment of the processing tool of the present invention. FIG. 3 is a vertical cross-sectional view showing a header processing state of a contact material using a noder processing punch for contact material, which is an example. l a -=- cutter, 1 b ---- die, 2
・---TiN film, 3---Single contact wire, 4---
-1 contact material, 5a, 5b...-1--header processing punch, 5cm--die, 6--'r i N film,
7-・-Contact material, 8 ・----! J Navel I type contact. Applicant Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

[Claims] A processing tool for use in belly-button processing, characterized in that at least the surface of the processing part is coated with at least one layer of a non-metallic film such as TiN, SiC, Tic, etc.