Fundamentals
3.1
3
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
113
reference systems
For the control to traverse an axis according to a defined path it
requires a
reference system
.
A paraxially mounted linear encoder on a machine tool serves
as a simple reference system for linear axes. The linear encoder
represents a
number ray
, a unidimensional coordinate system.
To approach a point on the
plane
, the control requires two axes and
therefore a reference system with two dimensions.
To approach a point in the
space
, the control requires three axes
and therefore a reference system with three dimensions. If these
three axes are configured perpendicular to each other this creates a
so-called
three-dimensional Cartesian coordinate system
.
According to the right-hand rule the fingertips point in
the positive directions of the three main axes.
For a point to be uniquely determined in space, a
coordinate origin
is needed in addition to the configuration of the three dimensions.
The common intersection serves as the coordinate origin in a 3-D
coordinate system. This intersection has the coordinates
X+0
,
Y+0
and
Z+0
.
The control must differentiate between various reference systems
for it to always perform a tool change at the same position for
example, or carry out a machining operation always related to the
current workpiece position.
The control differentiates between the following reference
systems:
Machine coordinate system M-CS:
M
achine
C
oordinate
S
ystem
Basic coordinate system B-CS:
B
asic
C
oordinate
S
ystem
Workpiece coordinate system W-CS:
W
orkpiece
C
oordinate
S
ystem
Working plane coordinate system WPL-CS:
W
orking
Pl
ane
C
oordinate
S
ystem
Input coordinate system I-CS:
I
nput
C
oordinate
S
ystem
Tool coordinate system T-CS:
T
ool
C
oordinate
S
ystem
All reference systems build up on each other. They
are subject to the kinematic chain of the specific
machine tool.
The machine coordinate system is the reference
system.
X
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Summary of Contents for TNC 620 Programming Station
Page 4: ......
Page 5: ...Fundamentals ...
Page 28: ...Contents 28 HEIDENHAIN TNC 620 ISO Programming User s Manual 9 2016 ...
Page 57: ...1 First Steps with the TNC 620 ...
Page 77: ...2 Introduction ...
Page 110: ......
Page 111: ...3 Fundamentals file management ...
Page 166: ......
Page 167: ...4 Programming aids ...
Page 194: ......
Page 195: ...5 Tools ...
Page 234: ......
Page 235: ...6 Programming contours ...
Page 284: ......
Page 285: ...7 Data transfer from CAD files ...
Page 304: ......
Page 305: ...8 Subprograms and program section repeats ...
Page 323: ...9 Programming Q parameters ...
Page 384: ......
Page 385: ...10 Miscellaneous functions ...
Page 407: ...11 Special functions ...
Page 433: ...12 Multiple axis machining ...
Page 475: ...13 Pallet management ...
Page 480: ......
Page 481: ...14 Manual Operation and Setup ...
Page 549: ...15 Positioning with Manual Data Input ...
Page 554: ......
Page 555: ...16 Test Run and Program Run ...
Page 590: ......
Page 591: ...17 MOD Functions ...
Page 622: ......
Page 623: ...18 Tables and Overviews ...