Table of Contents
Advertisement
Entering more than three coordinates
Machining with 5 axes, for example, moves 3 linear and 2 rotary
axes simultaneously.
Such programs are too complex to program at the machine,
however, and are usually created with a CAD system.
Example:
X+20 Y+10 Z+2 A+15 C+6 R0 F100 M3
The TNC graphics cannot simulate movements in more
than three axes.
Circles and circular arcs
The TNC moves two axes simultaneously in a circular path relative
to the workpiece. You can define a circular movement by entering
the circle center CC.
When you program a circle, the TNC assigns it to one of the main
planes. This plane is defined automatically when you set the
spindle axis during a tool call:
Spindle axis
Z
Y
X
You can program circles that do not lie parallel to a main
plane by using the function for tilting the working plane
(see Chapter 8) or Q parameters (see Chapter 10).
Direction of rotation DR for circular movements
When a circular path has no tangential transition to another contour
element, enter the direction of rotation DR:
Clockwise direction of rotation: DR–
Counterclockwise direction of rotation: DR+
Radius compensation
The radius compensation must be in the block in which you move
to the first contour element. You cannot begin radius compensation
in a circle block. It must be activated beforehand an a straight-line
block or approach block (APPR block).
For detailed information on approach and straight-line blocks, refer
to sections 6.3 "Contour Approach and Departure" and 6.4 "Path
Contours — Cartesian Coordinates. "
Pre-positioning
Before running a part program, always pre-position the tool to
prevent the possibility of damaging it or the workpiece.
94
www.EngineeringBooksPdf.com
Main plane
XY, also
UV, XV, UY
ZX, also
WU, ZU, WX
YZ, also
VW, YW, VZ
Y
Y
Y
CC
X
Z
D R –
Y
6 Programming: Programming Contours
CC
X
X
CC
D R +
X
Advertisement
Table of Contents
