Heidenhain MANUALplus 4110 User Manual download pdf (Page 180)

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101

180 4 Cycle Programming

4.6 Thread and Undercut Cycles

Undercut DIN 76

Call the thread-cutting menu.

Select the "Undercut DIN 76" cycle.

With return soft key:

Off: When the cycle is completed, the tool remains at

the cycle end position (see figures at right).

On: Tool returns to the starting point (see figures on

next page).

The cycle machines a thread undercut according to DIN76, a thread

chamfer, then the cylinder, and finishes with the plane surface. The

thread chamfer is executed when you enter at least one of the

parameters "B" or "RB."

Cycle parameters

 X, Z starting point

 X1, Z1 starting point of cylinder

 X2, Z2 end point on plane surface

 FP thread pitch—default: Value from standard table

 E reduced feed rate for the plunge cut and the thread chamfer—

default: Feed rate F

 T tool number

 S spindle speed / cutting speed

 F feed per revolution

 I undercut diameter—default: Value from standard table

 K undercut length—default: Value from standard table

 W undercut angle—default: Value from standard table

 R undercut radius (on both sides of the undercut)—default: Value

from standard table

 P undercut oversize

 P>0: Division into pre-turning and finish-turning—"P" is the

longitudinal oversize; the transverse oversize is always 0.1 mm

 No input: Machining in one cut

 B cylinder start chamfer—default: No start chamfer

 WB 1st cut angle—default: 45°

 RB chamfer radius—default: No chamfer radius

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