Large Diameter Tapped Punches DLC Coated

Large diameter tapped punches DLC-coated are used in injection mold and stamping tooling where repeatable punching of tough sheet or thick sections is required. Their bolt-fixed design supports stable positioning and fast swap-out during maintenance, helping teams minimize downtime after edge regrinding.

• Automotive bracket or connector knock-out tooling: Use these punches when punching through high-tensile steels; the tapped, large-diameter form and bolt fixing improve resistance to shift under load, while the DLC foundation/WPC surface options enhance wear behavior.
• Industrial housings and thick-plate forming dies: Height adjustment after regrinding is practical for maintaining clearance and edge quality over many cycles. Select the DLC foundation/WPC surface system to reduce abrasive wear at the working tip.
• High-throughput production lines with narrow pitches: Tip geometry (A/D/E/G/R) and configurable tip dimensions support compact arrangements where spacing limits the use of larger tooling envelopes.

Choose this variant when easy replacement and predictable geometry retention after regrinding are critical for stable cycle performance.

The provided configuration specifies surface treatment rather than a fixed bulk steel grade. Two surface states are available: without DLC foundation and DLC foundation / WPC. The DLC foundation/WPC option is intended to improve wear resistance at the punch tip where sliding and impact contribute to abrasion.

• DLC foundation / WPC: Typically used to balance low-friction behavior with improved resistance to tip wear during punching cycles. This can reduce maintenance frequency and support consistent edge performance.
• Without DLC foundation: A simpler surface state that may be selected when cost constraints dominate or wear loads are moderate.

Heat treatment is not specified in the input data; therefore, assume material hardness/quenched-tempered or nitrided states depend on the underlying tooling steel supply and must be confirmed for your application.

Select the tapped punch dimensions by matching the shank diameter, working tip dimensions, and overall height limits of your mold cavity/core or die holder.

• Shank diameter D: Choose from 5 ~ 25 mm. Use the tolerance callout +0.005/0, m5 when designing the mating hole so the punch seats without excessive clearance.
• Tip/tap geometry: Pick the tip shape A, D, E, G, R and tip dimension P (1.2 ~ 18 mm) plus W (1.2 ~ 6 mm) to meet the target punch profile for your narrow pitch layout.
• Height and regrind compensation: Ensure L (40 ~ 70 mm) and LC (27 ~ 42 mm) fit within the available stack height. Account for tip alteration PC (0.8 ~ 9 mm) and corner radius R (0.15 mm) to maintain clearance after regrinding.

Where your assembly uses a bolt-fixed interface, verify the “tap standard type / tapped large-diameter type / tapped extra-large diameter type” corresponds to the tapped hole specification in the holder.