Punching and Other Holemaking Articles

Making holes is a critical capability for fabricators. This technology area covers ironworkers, perforating machines, piercing machines, drills, slotting machines, single-station punch presses, turret punch presses, and combination laser/punch presses.

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Tap into success

March 8, 2005

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Even with all of the new advances in metal stamping technology, screws and threaded holes are still the trusted staples for metal fastening. Tapping the threaded holes has never been an easy task, however.

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Solving pierce punch breaking and chipping problems

February 8, 2005

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Figure 1Having a pierce or perforating punch chip, or worse yet break, can cause severe die damage. It also can result in nonconforming parts because of burrs or undersize holes. Broken punch pieces can fall into the die and crush pads, as well as forming and cutting sections. This article...

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The growing versatility of turret punch presses

September 14, 2004

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Recent improvements in press drive technology, machine control design, tooling, and CAD/CAM programming software are increasing the throughput capability and the overall versatility of CNC turret punch press equipment.

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Getting more punch life

July 13, 2004

Augur Metal Products, a sheet metal fabricator that manufactures components for OEMs, punches large stainless-steel sheets for commercial separators. Its punches required sharpening after punching 10 to 15 sheets until it changed to Mate punches made from DuraSteel™ tooling with Maxima® coating and dies made with Mate's Slug Free® design. The new tooling allows the company to exceed 40 sheets between sharpenings and increase press speed by 20 percent.

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Maximizing your ironworker's potential

March 25, 2004

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Ironworkers perform many functions that allow fabricators to simplify difficult tasks. No matter which type of ironworker you have, you probably have found yourself saying, "I don't know how I ever got along without my ironworker."

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New tool helps fabricator accelerate part making for small runs

August 14, 2003

Custom metal fabricator Total Metal Products, Dallas, had a need for part marking that would be both accurate and cost-effective for small quantities. The company supplies punched parts in single and small-lot quantities of 200, 300, and 400 on a just-in-time (JIT) basis. Its customers include manufacturers in the telecommunications, aerospace, mass transit, and oil refining industries.

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Five ways to add punch to productivity

January 16, 2003

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It is no surprise that fabricators are always looking for ways to increase productivity; however, many don't realize that a simple solution sometimes can be found right in front of them.

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How to select the right IRONWORKER for your application

January 16, 2003

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An ironworker can be an important and versatile machine in a metal fabricating shop. Quite often ironworking is the first step in the manufacturing process, and one ironworker typically can provide enough fabricated material to keep up to seven welders or assemblers busy.

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Punching tips

December 13, 2001

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The author discusses what not to do to manage slug ejection. He mentions several tooling maintenance errors that he has made over the years, as well as what machine operators can do if they want to experience slug ejection difficulties. He concludes by stating that the easiest solution to slug management is to keep the tooling in good condition and to use the correct die clearance for the material.

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Punch Die Stripper

Keeping pace with today's punching requirements

December 13, 2001

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This article provides the basics on how the punch, die, and stripper work; how to perform material thickness calculations on various materials; how different applications affect punching quality; how fully guided tooling counters lateral forces; and how metallurgy, coatings, and maintenance affect tooling.

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