vol.2 LIFE COUNTERMEASURE FOR TOOLING
In punching process with a NC turret punch press, tool life has a major effect on productivity and cost.
This chapter has summarized some measures including Super Dry Punch, as measures for the tool life.
Super Dry Punch (SDP)
- ■Super Dry Punch (SDP) supports 【Dry Processing】 without using press processing oil.
It exerts outstanding effects on difficult-to-process materials such as stainless steel. - ■Excellent durability is achieved by the double effect of the "super hard coating (Hv 2,500~3,000)" on the surface and the "penetration layer" to the punch base material.
Eliminated the "film peeling" defect that occurs when stainless steel is processed with conventional coating punches such as TiN (gold) and TiCN (gray purple).
Conventional coating
Super Dry Punch (SDP)
- ■Durability test results of Super Dry Punch and TiCN coating
Surface Treatment | TiCN Coating | Super Dry Punch (SDP) |
Material & Thickness | SUS 304 t = 2.0 | SUS 304 t = 2.0 |
Working Oil | Not in use (Non-oil Process) | Not in use (Non-oil Process) |
The number of hits | About 20,000 hits | About 82,000 hits |
SURFACE TREATMENT VARIATION (APPROPRIATE)
Total performance |
Punch type | Appropriate Material | Characteristics | |||
Stainless steel | Mild steel | Aluminum | Galvanized | |||
High PerformanceCost Performance |
Super Dry Punch (SDP) |
★★★★★★ | ★★★★★★ | ★★★ | ★★★ | Highly effective in SUS material |
Heavy Duty Punch (HDP) |
★★★★★ | ★★★★★★ | ★★★★★★ | ★★★★★★ | Excellent heat resistance | |
Conic Long Life Punch (CLP) |
★★★★ | ★★★★★ | ★★★★★★ | ★★★★★★ | Emphasizing balance and Long life | |
Conic Hard Punch (CHP) |
★★★ | ★★★★ | ★★★★★ | ★★★★ | High Cost Performance | |
M2… No surface treatment |
★★ | ★★★ | ★★★ | ★★★ | ||
D2… No surface treatment |
★ | ★ | ★★ | ★ |
SLITTING (NIBBLING) PROCESSING
Heel tool
A tool that equipped with fixed heel part to punch and the heel part enters the die before the punch strikes the material,
prevents deviation of the punch during removal.
※ There is a limit on slitting direction.
Sharp Roof tool
In addition to this, there is also a sharp roof tool that has a movable heel part at the cutting edge to reduce restrictions on the slitting direction.
NARROW PUNCH
There is a punch type such as narrow type, open end type, super narrow type etc.
which made it difficult to break by shortening the effective punch length and increasing the strength of the punch.
〔 Standard type 〕
〔 Narrow type 〕
〔 Open-end type 〕
〔 Super-narrow type 〕
THICK PLATE PROCESSING
BACK TAPER
A tool that provide taper relief on the punch and reduce seizure and contact with the material.
OTHER LIFE COUNTERMEASURES
- 1.Check for misalignment of turret station and wear of turret key etc.
- 2.Combined use with tools for slug pulling measures.
- 3.Implementation of early regrinding.
- 4.Put a small rounding on the corner of Square / Rectangle punch.
As life countermeasures of the tool, it is recommended to select a tool that is acceptable for the processing conditions such as the quality and thickness of material.
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vol.1 COUNTERMEASURES FOR SLUG PULLING IN PUNCHING PROCESS
vol.2 LIFE COUNTERMEASURE FOR TOOLING
Vol.3 TOOL MAINTENANCE
Vol.4 FORMING TOOL
Vol.5 MATERIAL FOR TOOLING
Vol.6 FOR CLEARANCE OF THE CUTTING DIE
Vol.7 ABOUT TURRET PUNCH PRESS MACHINE
Vol.8 VARIOUS KINDS OF SPECIAL SHAPE
Vol.9 PARTS NAME OF STANDARD TOOLING
Vol.10 EACH NAMES OF FORMING TOOL
Vol.11 MATERIAL PROPERTIES (STEEL)
Vol.12 MATERIAL PROPERTIES
Vol.13 CALCULATION FORMULAS FREQUENTLY USED IN SHEET METAL
Vol.14 HEIGHT ADJUSTMENT FREE TOOL
Vol.15 HOW TO DRAW AND READ DRAWINGS
Vol.16 HOW TO DRAW AND READ DRAWING (PRACTICAL USE)
Vol.17 SHAPE INSTRUCTION FOR FORMING TOOLS(1)
Vol.18 SHAPE INSTRUCTION FOR FORMING TOOLS(2)
Vol.19 CODE MANAGEMENT
Vol.20 BENDING TECHNICAL INFORMATION
Vol.21 TECHNICAL COUNSELING FAQ(1) "COUNTERMEASURES FOR GALLING"
Vol.22 TECHNICAL COUNSELING FAQ(2) "BURRING FOR THREAD FORM"
Vol.23 TECHNICAL COUNSELING FAQ(3) "PITCH OF SINGLE PIERCING"
Vol.24 TECHNICAL COUNSELING FAQ(4) "SHEAR OPTIONS"
Vol.25 TECHNICAL COUNSELING FAQ(5) "HOLDING MARK"
Vol.26 TECHNICAL COUNSELING FAQ(6) "SOLUTION FOR SLUG PULLING OF A SHEET METAL WITH PROTECTIVE FILM"
Vol.27 TECHNICAL COUNSELING FAQ(7) "MATERIAL WARPING PREVENTION DURING"
Vol.28 TECHNICAL COUNSELING FAQ(8) "WARPING PREVENTION OF BLANKING OUT"
Vol.29 TECHNICAL COUNSELING FAQ(9) "COUNTERSINK FOR COUNTERSUNK SCREW"
Vol.30 THE ORDERING GUIDE(1) "HOW TO INSTRUCT SHAPE AND DIMENSIONS"
Vol.31 THE ORDERING GUIDE(2) "REFERENCE KEY DIRECTION"
Vol.32 THE ORDERING GUIDE(3) "ANGLE INDICATION OF ANGLED TOOL"
Vol.33 THE ORDERING GUIDE(4) "SELECT SPECIFICATION OF PUNCH"
Vol.34 THE ORDERING GUIDE(5) "DIE SPECIFICATION SELECTION"