Progressive Die Punch | PG Profile Grinding Precision Punch

Progressive Die Punch – PG Profile Grinding Precision

Custom PG Profile Grinding Progressive Die Punch with ±0.001 mm accuracy, designed for high-speed precision stamping applications.

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Progressive Die Punch by PG Profile Grinding

PG Profile Grinding for complex punch geometry

Profile accuracy up to ±0.001 mm

Excellent edge sharpness and surface finish

Stable repeatability for replacement punches

Fully custom-made to drawings or samples

Suitable for micro and precision punches

PG punches are ideal for high-speed progressive dies, where stable performance and long tool life are critical.

Progressive Die Punch is customized according to customer drawing or samples. They allows precise control of width, profile shape, step geometry, and edge condition.

PG is able to produce micro punches with widths as small as 2–3 mm. At the same time, it maintains tight tolerances across the full length.

Typical Applications:

Progressive stamping dies

Precision metal stamping molds

Connector and terminal dies

Automotive and electronic components

High-speed stamping production lines

Technical Specifications of Precision Stamping Punch

Parameter	Typical Values / Notes
Dimensional accuracy	±0.001 mm
Surface roughness (Ra)	0.1 – 0.2 μm typical
Repeatability	±0.002 mm
Minimum feature size	0.1 mm edge/slot
Maximum part size	Up to 400 mm × 200 mm × 150 mm (depends on machine model)
Max material hardness	HRC 68 (tungsten carbide, tool steel)

Key point: PG excels at small, delicate, or thin-walled parts without deformation.

During the manufacturing process, we apply dimensional inspection and process control. This step ensure consistency and repeatability, making sure our PG grinding punch suitables for both prototype development and repeat production. Hepha Precision support Custom designs, small batch orders, and stable lead times. Therefore, technical drawings are welcome for evaluation. What’s more, each project is handled with a tooling-oriented approach to ensure reliable performance in actual stamping applications.

FAQs

What tolerance can you achieve with PG optical profile grinding?

What is the minimum radius / sharp corner you can grind?

Can you grind complex or asymmetric profiles?

What materials do you work with?

Do you have experience with connector molds / precision stamping dies?

Can PG grinding replace wire EDM for certain profiles?

What is your typical lead time?

Is there a minimum order quantity (MOQ)?

How do you protect customer drawings and intellectual property (IP)?

Why choose PG optical profile grinding instead of standard grinding?

PG optical profile grinding provides significantly higher profile accuracy and repeatability than standard grinding, especially for parts with complex contours and functional edges.

Compared with standard grinding, PG grinding offers:

Superior profile accuracy for curves, angles, and asymmetric shapes

Direct optical profile verification during grinding

Cleaner, sharper cutting edges with controlled micro-radius

Better consistency across multiple identical parts

Standard grinding is well suited for straight surfaces and simple geometries.
However, when the function of a punch or insert depends on precise contour shape, PG optical profile grinding ensures the profile matches the design intent exactly.

For precision molds, connector tooling, and fine-pitch stamping applications, PG grinding often results in more stable performance and longer tool life.