Cycle Parameters - HEIDENHAIN TNC 640 User Manual

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Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling | RECTANGULAR POCKET (Cycle 251, DIN/ISO:

Cycle parameters

Q215 Machining operation (0/1/2)?: Define
machining operation:
0: Roughing and finishing
1: Only roughing
2: Only finishing
Side finishing and floor finishing are only machined
when the specific allowance (Q368, Q369) is
defined
Q218 First side length? (incremental): Pocket
length, parallel to the reference axis of the working
plane. Input range 0 to 99999.9999
Q219 Second side length? (incremental): Pocket
length, parallel to the minor axis of the working
plane. Input range 0 to 99999.9999
Q220 Corner radius?: Radius of the pocket corner.
If you have entered 0 here, the TNC assumes that
the corner radius is equal to the tool radius. Input
range 0 to 99999.9999
Q368 Finishing allowance for side? (incremental):
Finishing allowance in the machining plane. Input
range 0 to 99999.9999
Q224 Angle of rotation? (absolute): Angle by
which the entire machining is rotated. The center
of rotation is the position at which the tool is
located when the cycle is called. Input range
-360.0000 to 360.0000
Q367 Position of pocket (0/1/2/3/4)?: Position of
the pocket in reference to the position of the tool
when the cycle is called:
0: Tool position = pocket center
1: Tool position = left corner below
2: Tool position = right corner below
3: Tool position = right corner top
4: Tool position = left corner top
Q207 Feed rate for milling?: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively FAUTO, fu, FZ
Q351 Direction? Climb=+1, Up-cut=-1: Type of
milling operation with M3:
+1 = Climb
–1 = Up-cut
PREDEF: The TNC uses the value from the
GLOBAL DEF block (if you enter 0, climb milling is
performed)
Q201 Depth? (incremental): Distance between
workpiece surface and bottom of pocket. Input
range -99999.9999 to 99999.9999
Q202 Plunging depth? (incremental): Infeed per
cut; enter a value greater than 0. Input range 0 to
99999.9999
Q369 Finishing allowance for floor?
(incremental): Finishing allowance for the floor.
Input range 0 to 99999.9999
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HEIDENHAIN | User's manual for cycle programming | 10/2017
G251)