Roland PNC-3100 CAMM-3, Руководство пользователя

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Part 1
16
10. Cutting Condition Setting
WARNING
When using a small-diameter tool, do not apply an excessive feed speed or cutting-in
amount while cutting, or the tool may break or fly off.
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 tool
used. There are several deciding factors to be taken into account when designating the cutting conditions.
1. The quality of the workpiece 3. The diameter of the tool used 5. The cutting shape
2. The type of tool used 4. The cutting method
Designate the cutting conditions in consideration of the above factors by performing the following three PNC-3100
setting operations.
1. The spindle motor revolution speed (tool revolution speed)
2. The feeding speed (tool moving speed)
3. The cutting-in amount (depth of one cutting operation)
Note : When settings have been made with both the software and the PNC-3100, 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 Characteristics/Points to Consider
Spindle motor
revolution speed
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 taken for cutting becomes too longer. Generally speaking, the
entire cutting speed is determined by the cutting edge speed, so the smaller the tool
diameter, the higher the spindle revolution speed requied. (Note : Refer to page 4 for
details on engraving without rotating the cutting tool.)
Revolution speed : 3000—8000 rpm
Feeding speed
When the feeding speed is high, processing becomes rough and flash marks tend to remain
on the cut 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.
Cutting-in amount
When the cutting-in amount is deeper, the cutting speed increases, but the cutting-in
amount is limited 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.
Feeding Speed
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 setting is performed via a switch panel key operation. Refer to page 23; "Feeding Speed Manual
Setting."