Cutting Condition Setting - Roland EGX-300 User Manual

Part 1

1-10 Cutting Condition Setting

Before you begin the actual cutting process, the cutting conditions such as the revolution speed of the spindle motor and the feeding
speed of each axis must be designated according to the quality of the workpiece and the type of cutter used. There are several deciding
factors to be taken into account when designating the cutting conditions.
1. The quality of the workpiece
2. The type of cutter used
3. The diameter of the cutter used
Designate the cutting conditions in consideration of the above factors by performing the following three EGX-300 setting operations.
1. The spindle motor revolution speed (cutter revolution speed)
2. The feeding speed (cutter moving speed)
3. The cutting-in amount (depth of one cutting operation)
Note : When settings have been made with both the software and the EGX-300, the last settings made have priority.
In this manual, these three conditions are called the cutting conditions. The characteristics and points to consider for each of these
conditions are as follows.
Item
The bigger this number, the faster the cutting speed. However, if this number is too large, the work
surface may melt or burn due to excessive friction. Conversely, if this number is made smaller, the time
Spindle motor taken for cutting becomes too longer. Generally speaking, the entire cutting speed is determined by the
revolution speed cutting edge speed, so the smaller the tool diameter, the higher the spindle revolution speed required.
(When performing engraving without rotating the cutting tool, set "REVOLUTION" to "OFF.")
Revolution speed : 5,000 to 15,000 rpm
When the feeding speed is high, processing becomes rough and flash marks tend to remain on the cut
Feeding speed surface. On the other hand, when the feeding speed is slow, processing takes more time.
Be careful because a slower feeding speed does not always result in improved finishing.
When the cutting-in amount is deeper, the cutting speed increases, but the cutting-in amount is limited
Cutting-in amount by the quality of the workpiece. In cases where the required depth can not be cut at once, repeat cutting
several times to depth that does not breach the limit.
Manual Setting of Cutting Conditions
The cutting conditions can be set manually according to the method described below.
If the cutting conditions can be set with your current software, this is a faster and more efficient method than manual setting. It makes no
difference when you come to construct a program. The following method is appropriate for making delicate halfway adjustments to
conditions previously set using software, etc.
Feeding Speed
1
Press the [MENU] key to make the following screen
appear on the display.
28
4. The cutting method
5. The cutting shape
Characteristics/Points to Consider
2
Press the [ ] or [ ] key to move the blinking cursor
(" ") to the value for the X-Y axes. To set the
machining speed of the head, move the blinking
cursor (" ") to the value for the Z axis.