17
Model 301 Tube Squaring Machine
92-0630 Rev. 190612
6.6 ADJUST THE CUTTING SPEED
Use the Speed Control to adjust the cutting speed. Refer to section 8, Cutting
Speeds and Feeds, for the recommended cutting speeds.
To obtain a minimum burr tube end, avoid heat build up. When either the tube or
the Tool Bit gets hot,the tube material starts to flow or push away from the Tool
Bit edge in the form of a burr. If the cut is done without heat build up, it is a clean
cut with a minimum burr.
Avoid the conditions, which generate excessive heat by:
•
Keep the RPM’s low; excessive cutting speed will generate unwanted
heat.
•
Keep the chip curling loose; avoid excessive depth of cut.
•
Use a sharp Tool Bit.
Rotate the Feed Handle clockwise to bring the Cutting Head and tube closer
together.
The machining operation begins when the Tool Bit contacts the tube or pipe.
If the tube end is not square to the tube axis, the Tool Bit will contact only a small
segment of the pipe during each revolution.
To avoid Tool Bit damage, the feed rate should be very slow until the Tool Bit is
contacting the pipe continually during at least one revolution.
Figure: 8. Model 301 Controls
Summary of Contents for 301A
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