T-slotmilling operation

The chart below provides the suggested chip load starting range typical for material type and tool diameter in use. This calculator provides a starting reference range only for shank tools and is based on cutting depth being equal to cutting diameter of the tool. Depending on depth of cut, this range needs to be further modified as follows:

Slot milling operationvideo

T-Slotmillingcutter

Noteworthy Information: The values in this chart apply to standard compression tools. If using a down cut spiral bit for dados or grooves, use the same formula but reduce the feed rate by 30%.

If Cut depth 2x Tool Diameter, reduce the given chip load by 20-25%If Cut depth 3x Tool Diameter, reduce the given chip load by 40-50%

Slot millingtool

Slot millingdefinition

To learn from other seasoned woodworkers experience and trials, join the conversation about chipload on the wood industry forum, www.woodweb.com!

Here is an excellent article “Factors on Factoring Chip Load” written by Ted Bruning, a woodworker and college instructor, with points that will resonate with most machinists.

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Slot millingmachine

PLEASE INPUT YOUR OWN APPLICABLE VALUES INTO THE RESPECTIVE FEED RATE / UNITS / RPM AND NUMBER OF FLUTES FIELDS AND THE CHIP LOAD WILL AUTOMATICALLY BE CALCULATED IN THE RED CHIP LOAD RESULT FIELD.

GDP Industrial Tooling - German Designed Precision serving North American manufacturers with high quality, precision cutting tools and accessories under the GUHDO banner since 1986.

To determine the optimum chip load for tool life/finish quality and further fine-tune your machining parameters for optimum tool life based on material and tool, please refer to Pg 47 of our CNC Tooling Guide

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