Reaming (Cycle 201) - HEIDENHAIN TNC 370 User Manual

8 Cycles
8.2 Drilling Cycles
REAMING (Cycle 201)
6
IWW:
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* Pmgram a positioning block fof the starting paint [h&e center) in the woting pbne 4th radius ctwnpensation RO.
* The algebraic sign far cycle parameter l3EPTl-l defines the working direction,
Process
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The TNC positions the tool in the Z axis at rapid traverse to the pro-
grammed setup clearance above the workpiece surface.
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The tool reams at the programmed reaming feed rate to the pro-
grammed depth.
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The tool dwells at the bottom of the hole, if this has been specified.
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The TNC subsequently moves the tool at the feed rate back to the
setup clearance and from there-if this has been specified-at FMAX
to the second setup clearance.
Input data
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SET-UP CLEARANCE Q200 (incremental value):
Distance between tool tip and workpiece surface. Enter a positive
value.
. DEPTH Q201 (incremental value):
Distance between workpiece surface and bottom of hole. Enter a
negative value.
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FEED RATE FOR PECKING 0206:
Traversing speed of the tool when reaming in mm/min.
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DWELL TIME AT DEPTH Q211:
Time in seconds which the tool spends at the bottom of the hole.
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RETRACTION FEED RATE 0208:
Traversing speed of the tool when withdrawing from the hole in mm/
min. If Q208=0 entered, then withdraw at REAMING FEED RATE.
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WORKPIECE SURFACE COORDINATE Q203 (absolute value):
L-
Coordinate of the workpiece surface.
Fig. 8.4:
Input parameters, HbAMING cycle
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2ND SET-UP CLEARANCE 0204 (incremental value):
Z coordinate at which no collision between tool and workpiece (clamp-
ing devices) can occur. Enter a positive value.