Chapter 8 Appendix; Examples Of Settings For Cutting Parameters; Example Settings; Tips For Fine-Tuning - Roland EGX-350 User Manual

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Table of Contents

8-1 Examples of Settings for Cutting Parameters

Example Settings

This machine lets you perform cutting using a wide variety of workpiece materials and cutters. However, the optimal cutting

parameters that yield the desired cutting results for these combinations vary widely.

The table below shows suggested cutters and cutting parameters suited to various types of workpieces. Refer to these when

selecting the cutting parameters. Before you perform actual cutting, carry out a cutting test and adjust the parameters as

needed.

Workpiece

composition

Acrylic

Aluminum

Brass

Chemical wood

Modeling wax

Tips for Fine-tuning

The optimal cutting parameters are determined by a balance of such factors as the hardness of the material, the feed rate,

the spindle rotating speed, the cutting-in depth, and the capacity of the cutter. Refer to the following tips and try fine-tuning

the parameters.

Spindle Rotating Speed

In general, faster rotation provides increased cutting capacity. However, a feed rate that is too slow with respect to the spindle

speed may lead to melting of the workpiece due to heat, or to increased burring or roughness. Roughness may also occur at

some places because feed stops momentarily at places where the direction of engraving changes (that is, at corners). Lower the

spindle speed. It may also be a good idea to use faster settings for narrower cutters and slower settings for wider cutters.

Feed Rate

Faster speeds result in shorter cutting times, but the cutting load also increases accordingly. The load may overcome the

strength with which the workpiece is secured in place, resulting in crooked lines or a nonuniform cutting-in depth. Also, a

feed rate that is too fast for the spindle rotating speed may result in roughness or a raised nap. Lower the feed rate.

Cutting-in Depth

Deeper cutting-in results in a greater cutting load, and roughness becomes more likely. When you make the cutting-in

deeper, it is a good idea to raise the spindle speed and lower the feed rate accordingly. Note, however, that there is a limit to

the maximum depth. When deep cutting-in is required, it is a good idea to perform double cutting and reduce the amount

of cutting-in per pass.

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