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 Die
Clearance Chart and Metal Gages Reference Card
The information in this chart is a fine tuned version
of more general clearance charts that are published
in our various catalogs and in other industry publications.
The chart is based on experiences from our customers
who achieve superior piece part quality and the longest
possible tool life. Blanking tools are generally assigned
with less clearance than piercing tools so that the
burnished area of the piece part (slug) is greater.
This leads to a higher quality piece part; however,
due to the smaller clearances, blanking tools become
dull more quickly.
 I/O
Radius Tool cuts both inside and outside radii
Small, precise tabs keep slugs and blanks intact while
being punched, yet permit them to break away from each
other easily off the machine. The recommended width
for the tab is .015”(0.4mm) gap between hits. The
tool is for use in an auto index station. Inside radius
must be larger than outside radius. Programming requirements
are included with the tooling.
Placing the form on the sheet with the grain running
perpendicular to the form can reduce tearing or splitting
of over stressed metal forms. Corners of high louvers,
high extrusions, complex lance and forms, and card guides
are typically vulnerable to this effect. Liberal application
of a forming lubricant is also recommended to let the
metal slide more freely over the forming surface of
the tool, especially in stainless steel.
Parts to be welded can be positioned
precisely, when shearbuttons are programmed into surfaces
to be joined. Layers of material come together with
NC accuracy.
 Costs
for bolts and lockwashers can be eliminated, if thread
forms can be programmed into a part.
This domed shape with a screw thread acts like a lock
nut as a screw tightens it down. Mate’s special
thread form tools make both the screw hole and the raised
dome in one hit.
Inscribe parts on a punch press
to reduce costly separate operations.
Inscribing numbers, words, or any combination thereof
can be programmed into your punch press with Mate stamping
tools. Produce one or two lines with one hit. The characters
line up straight and depth of impression is uniform.
Newer punch presses can also use Mate’s Sheetmarker™
tool, a flexible inscription tool that is capable of
marking numbers or logos of any size onto the sheet
metal part.
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