We offer emergency repair and correction services for cold heading dies!

We can reduce your prototype/development lead time!

example

01

Chipped edge

Shape: round
Issue: Angled edge chip
Treatment: Top surface drop and angle drive
Procedure length: 1-2 Days

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example

02

Chipped edge

*Bearing and recessing

Shape: round
Issue : Conical angled edge chip
Treatment: Top surface drop and angle drive / Bearing and recessing
Procedure length : 1-3 Days

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example

03

Galling (seizure) occurring in land, bear, and recessing areas

Shape: round
Issue: Seizure of aperture angle (galling), poor drawing
Treatment: Lap and lap after angle drive
Procedure length : 1-2 Days

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example

04

Inner diameter size 0.01 to 0.05 mm smaller

Shape: round, straight/stepped
Issue: Inner diameter size 0.01 to 0.05 mm smaller
Treatment: Internal diameter enlargement
Procedure length : 1-2 Days

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example

05

Inner diameter size 0.05 to 0.1 mm smaller

Shape: round, straight/stepped
Issue: Inner diameter size 0.05 to 0.1 mm smaller
Treatment: Internal diameter enlargement
Procedure length : 2-3 Days

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example

06

Clogged air hole, Stepped corner not straightened

Shape: round
Issue: Clogged air hole, Stepped corner not straightened
Treatment: Small-hole electrical discharge machining (Φ0.5 to 1.0 mm)
Procedure length : 1-3 Days

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example

07

A: Punch pin damaged, pin jammed
B: KO pin damaged, pin jammed
C: Forging blank

Shape: round
Issue: KO pin stuck and unable to remove
Treatment: Removal work + inner diameter lap
Procedure length : 2-4 Days

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example

08

Inlet chipping

Shape: tapped blind hole
Issue : Inlet chipping
Treatment: Top surface drop EDM Follow-up lap
Procedure length : 2-4 Days

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example

09

Issue : Inlet chipping

Shape: round, tapped blind, marked
Issue : Chipped inlet and markings
Treatment: Top surface drop EDM, follow-up lap mark insertion
Procedure length : 2-5 Days

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example

10

Dashed line shows original shape, solid line shows modified shape

Shape: round
Issue: Changing former model
Treatment: External and full-length cutting, chip repositioning
Procedure length : 1-3 Days

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List of Repairs and Corrections

Galling (seizure) / Bearing and recessing enlargement / Inner diameter enlargement / Body enlargement / Pin hole enlargement / KO hole enlargement / Angle adjustment / Drawing / Chipped edge / Inlet R / Air blockage / Air hole blockage / Weak shoulder tension / Pin blockage / Bottom punch correction / Bottom punch mark insertion / Inner diameter lap / Carbide lap / Lap processing / Outer diameter cutting / Top surface drop / Chip repositioning / Pinlock wire processing / Nib replacement / Carbide replacement / Carbide upper replenishment / Carbide lower replenishment / Case disassembly, etc.

*1 These are representative examples. Please contact us for more information.
*2 The example are all round-shaped, but we also handle different shapes other than gear shapes.
If you are in a hurry or the drawing is difficult to interpret, we can respond more quickly with your DXF data.
*3 Please contact us for an estimate as this is an express price.
*4 Dates may vary, so please consult with us.