Use the options on this page to reduce the feed rate at the top and bottom of holes. This enables the tool to slow down and approach these regions safely. If the machine tool has a drilling cycle that supports this option, set it up in the option file (otherwise, on the
NC Program dialog, select a Drilling Cycle Output of
off).
Note: Feed rate reduction is applied to the start of
Single peck,
Ream, and
Counter bore cycle types.
This page contains the following:
Use absolute start/end distances — Select to enter the
Hole start > Safety margin and
Hole end > Distance as an absolute distance rather than a factor. When deselected a value of 0.2 represents 20% of the hole length. When selected a value of 0.2 represents 0.2 mm. Factors must have a value between 0 and 1.
Hole start — Specifies how to reduce the feed rate and spindle speed at the top of a hole.
- Safety margin — Enter the distance below the top of the hole, over which a reduced, constant, feed rate and spindle speed is used. After this distance, the feed rate and spindle speed return to their full values specified in the
Feeds and Speeds dialog. Enter a value to enable the
Feed rate (%) and
Spindle speed (%) fields.
- Feed rate (%) — Specify the reduced feed rate, as a percentage of the maximum feed rate, used when the tool moves through the safety margin at the top of the hole.
- Spindle speed (%) —Specify the reduced spindle speed, as a percentage of the maximum spindle speed, used when the tool moves through the safety margin at the top of the hole intersection.
Hole end — Specifies how to reduce the feed rate and spindle speed at the bottom of a hole.
- Distance — Enter the distance above the bottom of the hole, over which the feed rate and spindle speed decelerates.
- Number of steps — Enter the number of steps over which the feeds and speeds are incrementally reduced.
- Safety margin — Enter the distance above the bottom of the hole, over which a reduced, constant, feed rate and spindle speed is used. Enter a value to enable the
Feed rate (%) and
Spindle speed (%) fields.
- Feed rate (%) — Specify the reduced feed rate, as a percentage of the maximum feed rate, used when the tool moves through the safety margin at the bottom of the hole.
- Spindle speed (%) —Specify the reduced spindle speed, as a percentage of the maximum spindle speed, used when the tool moves through the safety margin at the bottom of the hole.
Dwell time — Enter the dwell time at each step.