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TECHNICAL GUIDE

PUNCHING TOOLS

Vol.17 SHAPE INSTRUCTION FOR FORMING TOOLS(1)

TECHNICAL GUIDE

PUNCHING TOOLS

Vol.17 SHAPE INSTRUCTION FOR FORMING TOOLS(1)

We summarized the shape / dimension instructions and precautions when ordering tools.

When ordering forming tools, please specify the following in addition to the shape instructions.

  • ●Thickness of material, Kind of material
  • ●Forming Up or Forming Down
  • ●Processing pitch, presence of other tools that may interfere with the forming tools.

DIMENSION INSTRUCTION METHOD FOR VARIOUS KINDS OF FORMING TOOLS

FORMING SHAPES INSTRUCTIONS

■ Center Point

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Our standard center punch tools are height adjustment free tool.
  • 2.The standard center punch angle (A) is 90 °.
    Please let us know if you would like
    other than 90 °.

■ Burring for thread form

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Please specify the inner diameter (A).
    Our standard inner diameter dimensions are as shown in the table on the right.
    Our standard size is shown in the right table.
  • 2.The standard dimension upward burring pin is coated with TiN.
  • 3. For pre-hole processing,
    • ・Two steps for upward processing.
    • ・For downward processing, one process is the standard, but we are also preparing a pre-hole in one hit type by upward forming.
Size φA
Ｍ2.5 φ2.1
Ｍ3 φ2.6
Ｍ4 φ3.4
Ｍ5 φ4.3
Ｍ6 φ5.1

■ Half Shear

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Please specify A or B dimension.
    It is also possible to instruct both A and B.
  • 2.If the height (H) is not specified, it will be about half the plate thickness.
  • 3.Unless otherwise specified, the dimensional tolerance of dimension A is ± 0.02.
    Please specify if other dimensional tolerances are desired.
  • 4.Extrusion type is also available as requested.
    (φA ＜ φB)

■ Countersink for countersunk screw (Chamfering)

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Two types of chamfering are available.
Type 1 Type 2
Type 1

Chamfer with a straight section
Type 2

Chamfer without a straight section
  • 2.When using countersunk screws,
    please specify the countersunk screw dimensions.

■ Emboss

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Please specify either A or B and C or D dimensions.
  • 2.If there is a pre- hole (inner diameter hole), please specify the dimensions.
    Please also indicate the before or after forming of the pre-hole (inner diameter hole).

■ Burring (Extrusion)

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Please specify the inner diameter (A) or outer diameter (B).
  • 2.When processing stainless steel, we recommend die punch surface treatment (TiN treatment).
  • 3.For upward forming, an external spring type die with enhanced strip force is also available.
  • 4.When threading the inner diameter, please inform us of the screw dimensions.

■ Emboss (Dimple)

〔 FORMING UP 〕

FORMING UP

〔 FORMING DOWN 〕

FORMING DOWN
  • 1.Please indicate the dimensions of convex diameter (A),
    concave diameter (B), convex spherical radius (C),
    concave spherical radius (D).
  • 2.Please let us know if the depth of the recess is required.

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Vol.17 SHAPE INSTRUCTION FOR FORMING TOOLS(1)(582KB)

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