HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 122)

122 smart.Turn units
2.7 Units—Finishing
"Relief turns (undercut) type E, F, DIN76" unit
The unit machines the undercut defined by KG, and then the adjoining
plane surface. The cylinder chamfer is executed when you enter at
least one of the parameters 1st cut length or 1st cut radius.
Unit name: G85x_DIN_E_F_G / Cycle: G85 (see page 316)
Access to the technology database:
 Machining operation: Finishing
 Affected parameters: F, S, E
Overview form
KG
Type of relief turn (undercut)
 E: DIN 509 type E; Cycle G851 (see page 318)
 F: DIN 509 type F; Cycle G852 (see page 319)
 G: DIN 76 type G (thread undercut); Cycle G853 (see
page 320)
X1, Z1 Contour starting point (X1: diameter value)
X2, Z2 Contour end point (X2: diameter value)
App Approach see page 65
Parameters on the "Type E" form
I
Undercut depth (default: value from standard table)
K Undercut length (default: value from standard table)
W Undercut angle (default: 15° from standard table)
R Undercut radius (default: value from standard table)
H Type of departure
 0: To the starting point
 1: Plane surface end
Parameters on the "Type F" form
I
Undercut depth (default: value from standard table)
K Undercut length (default: value from standard table)
W Undercut angle (default: 15° from standard table)
R Undercut radius (default: value from standard table)
P2 Face depth (default: value from standard table)
A Face angle (default: 8° from standard table)
H Type of departure
 0: To the starting point
 1: Plane surface end