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Stamping tool and treatment method for stamping tool surface

A processing method and mold technology, applied in metal processing, metal processing equipment, nuclear engineering, etc., can solve problems such as difficulty in applying the three-dimensional surface of the mold, difficulty in forming micro-storage pools, and formation of micro-storage pools

Active Publication Date: 2011-04-20
JAPAN AVIATION ELECTRONICS IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition that the surface roughness is less than tens of nanometers, that is, the depth of the concave part is about 10nm to 100nm, the effect of the micro-reservoir on the press process has not been studied in the past, so it is not clear.
[0009] In addition, the existing methods of forming micro-reservoirs have too large a roughness, which is a big problem that such roughness cannot be applied to components below the order of tens of nanometers
As a method of forming fine micro-reservoirs, it is conceivable to apply the photolithography method used in the field of semiconductors, etc., but it is difficult to apply to a three-dimensional surface (three-dimensional surface) like a mold. Therefore, the current situation is that there is no surface roughness required. A method of effectively forming a micro-reservoir under the condition that the density is on the order of tens of nanometers or less
[0010] Moreover, when using the existing method to form micro-reservoirs on the surface of the sharp edge of the mold with a radius of curvature of, for example, several μm, there is also the problem that the edge becomes blunt and cannot achieve beautiful molding. It is extremely difficult to form a micro-reservoir on the sharp edge surface

Method used

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  • Stamping tool and treatment method for stamping tool surface
  • Stamping tool and treatment method for stamping tool surface
  • Stamping tool and treatment method for stamping tool surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Manufactured by wire electric discharge machining using superhard material V20 composed of tungsten carbide and Co as a binder Figure 2A Die die shown. A hole 22 having a gear structure and a diameter of about 1 mm is formed in the die 21 . The die 21 is irradiated with a gas ion beam from a direction substantially parallel to the sliding direction of the die 21 and the material to be processed formed by the die 21 . In addition, the sliding direction of the die and the processed material formed by the die, for example, in image 3 In the case of the arrangement shown, it is in the direction of the arrow a. image 3 Among them, 31 represents a die, 32 represents a punch, and 33 represents a material to be processed.

[0040] Argon was used as the raw material gas, the acceleration voltage was 20kV, and the irradiation dose was 1.5×10 17 ions / cm 2 ,From Figure 2A The gas ion beam is irradiated toward the die 21 in the direction of the arrow a shown. Then, the edg...

Embodiment 2

[0043] SKD11 using stainless steel materials, made by electric discharge machining Figure 4A Die die shown. A hole 42 having a diameter of about 1 mm is formed in the die 41 . The gas ion beam was irradiated to the die 41 in the same manner as in Example 1 by oscillating the irradiation axis at an angle within ±20 degrees from the sliding direction (arrow a direction) of the die 41 and the workpiece formed by the die 41 . Then, the edge portion 43 of the hole 42 of the die 41 was observed with a scanning electron microscope. As an example of the observation result, Figure 4B express observation Figure 4A The result of part c, Figure 4C shows its schematic diagram. It can be seen that not only the edge portion 43 but also the corrugated portion 44 is formed inside the hole 42 . The corrugated portion 44 has a period of about 300 to 1000 nm and a depth of about 30 to 100 nm.

[0044] This die 41 was set on a press machine, and a copper plate having a plate thickness o...

Embodiment 3

[0046] Using superhard material V20, the punch die is made by grinding. The shape of the front end of the punch is a quadrangle with a width of 0.3 mm and a length of 2 mm. The punch is irradiated with a gas ion beam from a direction substantially parallel to the sliding direction of the punch and the material to be processed formed by the punch. Argon was used as the raw material gas, the accelerating voltage was 20kV, and the irradiation dose was 3×10 16 ions / cm 2 . Then, the edge portion of the punch was observed with a scanning electron microscope. It was observed that corrugations were formed on the edge of the punch. As a form of the bellows, it is formed in a bar shape extending in a direction perpendicular to the sliding direction (shearing direction) of the punch and the material to be processed formed by the punch. The period of the corrugated portion is about 300 to 600 nm, and the depth is about 50 to 80 nm.

[0047] This punch was set on a press machine, and...

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Abstract

To enable fabrication of a precise stamped product having an extremely low surface roughness. Ripples 24 having depths ranging from 10 to 100 nm are formed with periodicities ranging from 100 to 1000 nm on a stamping tool surface that comes into contact with a workpiece material. The ripples 24 have a stripe shape extending in a direction substantially perpendicular to the direction of sliding between the stamping tool (die 21) and the workpiece material (the direction of the arrow a). The ripples 24 serve as micro pools. For example, a product that is required to have a surface roughness of the order of several tens of nm or lower can be satisfactorily stamped.

Description

technical field [0001] The invention relates to a mold for stamping and a method for processing the surface of the mold. Background technique [0002] In stamping processing, it is very important to reduce the friction of the friction interface during processing to prevent burrs from forming stamped parts, improve processing quality, and improve the durability of punches or dies themselves. There are large and small irregularities on the surface of the processed material (metal material). The lubricant (lubricating oil) applied to the material before processing is stored in the rough concave part of the material. When the mold is in contact with the material, if there is no flow gap, the lubricant is mechanically sealed in the concave part, and in this state was brought into the friction interface. Such an introduction mechanism is expected in all plastic workings. [0003] In order to actively utilize the effect of this lubricant, it has been confirmed that roughening th...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/18B23P17/00
CPCG21K5/02B21D37/20B26D7/088B26F1/14Y10T83/263Y10T83/929Y10T83/9437B21D37/205B23K15/08C23F4/00
Inventor 佐藤明伸铃木晃子河野健司
Owner JAPAN AVIATION ELECTRONICS IND LTD