Punching | Reinke's Fabrication

By: Reinke's Fabrication  11/26/2011

CNC punch plasma 4′ X 5′, 40 ton workstation. We also have two iron workers with a wide range of punch sizes from 3/16″ on upto 1 1/2″. Are CNC punch plasma is a machine that will punch the holes in the material and then it will cut them out with the accuracy of a plasma. If you are wanting a less complex part we can mark out the hole and punch it on our ironworker.

The way a punch works is its consisted of a die set. The male part is also known as the punch and the female part is known as the dies. The dies are a little oversized if compared to the punch. That is needed for the clearance so that the punch transfers through the die set smoothly. At the same time making a precision tear in the metal in a downward manner pushing the slug through the die set.

There are two types of punch presses. A hydraulic and a mechanical press. A mechanical punch presses fall into two distinct types, depending on the type of clutch or braking system with which they are equipped. Generally older presses are “full revolution” presses that require a full revolution of the crankshaft for them to come to a stop. This is because the braking mechanism depends on a set of raised keys or “dogs” to fall into matching slots to stop the ram. A full revolution clutch can only bring the ram to a stop at the same location- top dead center. Newer presses are often “part revolution” presses equipped with braking systems identical to the brakes on commercial trucks. When air is applied, a band-type brake expands and allows the crankshaft to revolve. When the stopping mechanism is applied the air is bled, causing the clutch to open and the braking system to close, stopping the ram in any part of its rotation. The other type of a press which is what two of Reinkes Fabrication are, are hydraulic punch presses, which power the ram with a hydraulic cylinder rather than a flywheel, and are either valve controlled or valve and feedback controlled. Valve controlled machines usually allow a one stroke operation allowing the ram to stroke up and down when commanded. Controlled feedback systems allow the ram to be proportionally controlled to within fixed points as commanded. This allows greater control over the stroke of the ram, and increases punching rates as the ram no longer has to complete the traditional full stroke up and down but can operate within a very short window of stroke

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