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Accurate Customized Metal Stamp

Based on drawings and images received from the customer,
we accept orders from units of one.

Focusing on integrated production from processing to hardening,
we strive for stability in quality control and process management.

Engraving specifications

1.Stamp material

Carbon tool steel and alloy tool steel is mainly used. You can choose the material depend on application.

Steel type for stamp material Steel type and application Feature (*1)
Equivalent to S45C Carbon steel for machine parts Mainly used as a spacer inserted between metal stamps.
Equivalent to SK105(SK3) Carbon tool steel Outstanding cost performance, widely used as metal stamp material.
Equivalent to SKS3 Alloy tool steel for cold die Outstanding abrasion resistance, mostly suited to stamping in small- to medium-lot production.
Equivalent to SKD11 Alloy tool steel for cold die Superlative abrasion resistance, mostly suited to stamping of mass-produced products.
Equivalent to SKD61 Alloy tool steel for hot die Suitable as metal stamping material in hot stamping.
Other metals Brass, Copper, Stainless steel, Cast iron etc. Used in branding, typing, discharge electrodes, casting and so on.

*1 This will differ according to the material quality of the workpiece, the stamping method and so on.

2. Character orientation

You can specify the orientation of characters that are stamped on workpieces.

Regular Orientation

Applied in cases of upright reading following stamping
(regular metal stamp)

Stamp view
Workpiece view

Reverse Orientation for Mold

Applied in case of stamping on molds, etc. where characters are inversely embossed.

Stamp view
Workpiece view

3. Character height

Indicates the size of characters, logo marks and so on. It usually refers to the distance between the ends of pointed peaks. In the case of a flat face, refers to the distance between the ends of the flat surface. Accordingly, care is needed because differences arise between engraved dimensions and the size of actually stamped characters. Characters can be engraved from a height of roughly 0.5 mm.

Sharp face

Flat face

4. Character width

The width of characters can be set as a ratio compared to the character height.
You can specify your desired ratio from 13 available types, ranging from 10:2 to 10:12.

Aspect ratio 10:2
10:3
10:4
10:5
10:5.5
10:6
(Standard ratio)
3:2
10:7
4:3
10:8
10:9
10:10
10:12

5. Chraracter pitch

In cases of multiple characters (continuous characters) such as "JAPAN," you can optionally specify the pitch between characters.
Since character pitch and width can be set according to the stamping area, engraving can be performed on narrow areas and small metal pieces.

Wide pitch
Standard pitch
Narrow pitch

6. Character tip processing

Through changing the tip processing of engraved characters, it is possible to alter the image left by the stamping and relieve metal stress on the workpiece. You can specify this according to the characteristics and purpose of the stamped workpiece.

Sharp face

The tip is like a pointed peak. This is generally and widely used as the standard specification.

Stamp view
Workpiece view

Flat face

Here the tip has a flat surface. It can be used for applying logo marks, conducting hot stamping and so on.

Stamp view
Workpiece view

Low-stress face

The tip is rounded, making it possible to prevent stress fracture of the workpiece and cracking of products due to concentration of energy. This is mainly used in atomic power and aircraft components, gas-related materials and so on.

Stamp view
Workpiece view

Dot face

Having the same purpose as the low-stress type, this is effective for further reducing the load on workpieces.

Stamp view
Workpiece view

Conical face

The tip is processed to a sharper conical point than used for dot face, and is effective in cases where deep stamping is conducted on leather, heavy paper, resin products and so on.

Stamp view
Workpiece view

Outline face

This is effective in case of stamping outlines of logo marks, etc. and stamping without excessive force.

Stamp view
Workpiece view

7. Engraving depth

This refers to the depth of engraving. Although this differs according to the engraving gradient and dimensions of the metal stamp material, you can usually specify from approximately 0.2 mm.

Engraving too deeply may lead to a wider skirt around the engraving, thereby limiting the width of the metal stamp material and pitch between characters.

8. Engraving gradient

This refers to the incline angle of engraving. Through altering the gradient angle, it is possible to adjust the ease with which the metal stamp approaches the workpiece. Although this differs according to the engraving height and dimensions of the metal stamp material, normally the gradient can be set between roughly 5° - 55°.

If the angle becomes too acute, it is easier to apply the stamp, but the material is more prone to chipping.
 If the angle is too obtuse, there is less risk of chipping but it is harder to apply the stamp.

9. Chisel finishing

Through adding the chisel finishing process after engraving, a metal stamp that remains sharp to the finest detail is made.
All TOCHO metal stamps are chiselled.

TOCHO font

  Aspect ratio Style
Semi-standard 10:2
10:3
10:4
10:5
10:5.5
Standard 10:6
Semi-standard 3:2
10:7
4:3
10:8
10:9
10:10
10:12
TOCHO font(Hiragana・Katakana・Symbols)
Hiragana
Katakana
Kanji
Symbols
Roman numerals
Small letter
Italic

Note) Specifications may be changed without notice in line with improvements in quality.