User Functions - HEIDENHAIN TNC 426 PB/M Technical Manual

User functions

Program entry
Position data
Contour approach and departure
Tool compensation
Cutting data table
Constant contour speed
3-D machining
Machining with rotary tables
FK free contour programming
Subprogramming
Background programming
Fixed cycles
2 – 26
TNC 426 and TNC 430
HEIDENHAIN conversational and ISO
n
Nominal positions for straight lines and circles in Cartesian or
polar coordinates
n
Absolute or incremental dimensional data
n
Display and input in mm or inches
n
Display of handwheel path during machining with handwheel
superpositioning
n
Via straight line: tangential or perpendicular (APPR/DEP)
n
Via circular arc (APPR/DEP)
n
Via rounding radius (RND)
n
Tool radius in the working plane, tool length
n
Radius compensated contour look ahead for up to 99 blocks
(M120)
For automatic calculation of speed and feed rate from various
definable combinations of tool and workpiece materials
n
With respect to the path of the tool center
n
With respect to the tool cutting edge (M109, M110, M111)
n
Reduced feed rate during plunging (M103)
n
3-D tool compensation through surface normal vectors
n
Automatic compensation of machine geometry when working
with tilted axes (M114, M115, M128, M129, M130)
n
Changing the position of the swivel head with the electronic
handwheel during program run. The position of the tool tip does
not change.
n
Jerk reduction
n
Spline
n
Tool perpendicular to contour
n
Tool radius compensation perpendicular to traversing and tool
direction
n
Programming a contour on a cylindrical surface as if on a plane
n
Feed rate in mm/min (M116)
FK free contour programming in HEIDENHAIN conversational
format with graphic support for workpiece drawings not
dimensioned for NC
Program section repeats, subprograms, program calls
Creating or editing a program while another program is being run
— also with graphical support
n
Peck drilling, tapping with or without a floating tap holder,
reaming, boring, hole patterns, slot milling, rectangular and
circular pocket milling, stud finishing, face milling of plane
surfaces
n
OEM cycles (special cycles developed by the machine tool
builder) can also be integrated
n
Contour pockets — also contour parallel
n
Contour train
HEIDENHAIN Technical Manual TNC 426, TNC 430