HEIDENHAIN TNC 320 Programming Station User manual

TNC 320
User’s manual for
cycle programming
NC Software
771851-04
771855-04
English (en)
9/2016

Fundamentals

Fundamentals
About this Manual
4HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
About this Manual
The symbols used in this manual are described below.
This symbol indicates that important information
about the function described must be considered.
WARNING This symbol indicates a possibly
dangerous situation that may cause light injuries if
not avoided.
This symbol indicates that there is one or more
of the following risks when using the described
function:
Danger to workpiece
Danger to fixtures
Danger to tool
Danger to machine
Danger to operator
This symbol indicates that the described function
must be adapted by the machine tool builder. The
function described may therefore vary depending on
the machine.
This symbol indicates that you can find detailed
information about a function in another manual.
Would you like any changes, or have you found any
errors?
We are continuously striving to improve our documentation for you.
Please help us by sending your requests to the following e-mail
address: [email protected].

TNC model, software and features
HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016 5
TNC model, software and features
This manual describes functions and features provided by TNCs as
of the following NC software numbers.
TNC model NC software number
TNC 320 771851-04
TNC 320 Programming Station 771855-04
The suffix E indicates the export version of the TNC. The export
version of the TNC has the following limitations:
Simultaneous linear movement in up to 4 axes
The machine tool builder adapts the usable features of the TNC to
his machine by setting machine parameters. Some of the functions
described in this manual may therefore not be among the features
provided by the TNC on your machine tool.
TNC functions that may not be available on your machine include:
Tool measurement with the TT
Please contact your machine tool builder to become familiar with
the features of your machine.
Many machine manufacturers, as well as HEIDENHAIN, offer
programming courses for the TNCs. We recommend these courses
as an effective way of improving your programming skill and
sharing information and ideas with other TNC users.
Operating instructions:
All TNC functions not connected to the cycles are
described in the TNC 320 User’s Manual. Please
contact HEIDENHAIN if you require a copy of this
User's Manual.
ID of User's Manual for conversational programming:
1096950--xx.
ID of User’s Manual for DIN/ISO programming:
1096983--xx.

Fundamentals
TNC model, software and features
6HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Software options
The TNC 320 features various software options that can be enabled by your machine tool builder. Each option is to
be enabled separately and contains the following respective functions:
Additional Axis (option 0 and option 1)
Additional axis Additional control loops 1 and 2
Advanced Function Set 1 (option 8)
Expanded functions Group 1 Machining with rotary tables
Cylindrical contours as if in two axes
Feed rate in distance per minute
Coordinate conversions:
Tilting the working plane
HEIDENHAIN DNC (option 18)
Communication with external PC applications over COM component
DXF Converter (option 42)
DXF converter Supported DXF format: AC1009 (AutoCAD R12)
Adoption of contours and point patterns
Simple and convenient specification of reference points
Selecting graphical features of contour sections from conversational
programs

TNC model, software and features
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Feature Content Level (upgrade functions)
Along with software options, significant further improvements of
the TNC software are managed via the Feature Content Level (FCL)
upgrade functions. Functions subject to the FCL are not available
simply by updating the software on your TNC.
All upgrade functions are available to you without
surcharge when you receive a new machine.
Upgrade functions are identified in the manual with FCL n, where n
indicates the sequential number of the feature content level.
You can purchase a code number in order to permanently enable
the FCL functions. For more information, contact your machine tool
builder or HEIDENHAIN.
Intended place of operation
The TNC complies with the limits for a Class A device in
accordance with the specifications in EN 55022, and is intended for
use primarily in industrially-zoned areas.
Legal information
This product uses open source software. Further information is
available on the control under
Programming operating mode
MOD function
LICENSE INFO softkey

Fundamentals
Optional parameters
8HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Optional parameters
The comprehensive cycle package is continuously further
developed by HEIDENHAIN. Every new software version thus
may also introduce new Q parameters for cycles. These new Q
parameters are optional parameters, which were not all available
in some older software versions. Within a cycle, they are always
provided at the end of the cycle definition. The section "New and
changed cycle functions of software 77185x-02" gives you an
overview of the optional Q parameters that have been added in
this software version. You can decide for yourself whether you
would like to define optional Q parameters or delete them with
the NO ENT key. You can also adopt the default value. If you have
accidentally deleted an optional Q parameter or if you would like
to extend cycles in your existing programs after a software update,
you can include optional Q parameters in cycles when needed. The
following steps describe how this is done:
To insert optional Q parameters in existing programs:
Call the cycle definition
Press the right arrow key until the new Q parameters are
displayed
Apply the default value or enter a value
To transfer the new Q parameter, exit the menu by pressing
the right arrow key once again or by pressing END
If you do not wish to apply the new Q parameter, press the
NO ENT key
Compatibility
The majority of part programs created on older HEIDENHAIN
contouring controls (TNC 150 B and higher) can be executed with
this new software version of the TNC 320. Even if new, optional
parameters ("Optional parameters") have been added to existing
cycles, you can normally continue running your programs as usual.
This is achieved by using the stored default value. The other way
round, if a program created with a new software version is to be
run on an older control, you can delete the respective optional
Q parameters from the cycle definition with the NO ENT key.
In this way you can ensure that the program will be downward
compatible. If NC blocks contain invalid elements, the TNC will
mark them as ERROR blocks when the file is opened.

New cycle functions of software 77185x-01
HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016 9
New cycle functions of software 77185x-01
The character set of the fixed cycle 225 Engraving was
expanded by more characters and the diameter sign see
"ENGRAVING (Cycle 225, DIN/ISO: G225)", page 282
New machining cycle 275 Trochoidal milling see "TROCHOIDAL
SLOT (Cycle 275, DIN/ISO: G275)", page 208
New machining cycle 233 Face milling see "FACE MILLING
(Cycle 233, DIN/ISO: G233)", page 164
In Cycle 205 Universal Pecking you can now use parameter
Q208 to define a feed rate for retraction see "Cycle parameters",
page 83
In the thread milling cycles 26x an approaching feed rate was
introduced see "Cycle parameters", page 108
The parameter Q305 NUMBER IN TABLE was added to Cycle
404 see "Cycle parameters", page 318
In the drilling cycles 200, 203 and 205 the parameter Q395
DEPTH REFERENCE was introduced in order to evaluate the T
ANGLE see "Cycle parameters", page 83
Cycle 241 SINGLE-LIP DEEP HOLE DRILLING was expanded
by several input parameters see "SINGLE-LIP DEEP-HOLE
DRILLING (Cycle 241, DIN/ISO: G241)", page 87
The probing cycle 4 MEASURING IN 3-D was introduced see
"MEASURING IN 3-D (Cycle 4)", page 423

Fundamentals
New and changed cycle functions of software 77185x-02
10 HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
New and changed cycle functions of
software 77185x-02
Cycle 270: CONTOUR TRAIN DATA was added to the cycle
package (software option 19), see "CONTOUR TRAIN DATA
(Cycle 270, DIN/ISO: G270)", page 207
Cycle 39 CYLINDER SURFACE (software option 1) Contour was
added to the cycle package, see "CYLINDER SURFACE (Cycle
39, DIN/ISO: G139, software option 1)", page 228
The character set of the fixed cycle 225 Engraving was
expanded by the CE, ß and @ characters and the system time,
see "ENGRAVING (Cycle 225, DIN/ISO: G225)", page 282
Cycles 252 to 254 were expanded by the optional parameter
Q439, see "Cycle parameters", page 139
Cycle 22 was expanded by the optional parameters Q401 and
Q404, see "ROUGHING (Cycle 22, DIN/ISO: G122)", page 196
Cycle 484 was expanded by the optional parameter Q536, see
"Calibrating the wireless TT 449 (Cycle 484, DIN/ISO: G484,
DIN/ISO: G484)", page 451

New and changed cycle functions of software 77185x-04
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New and changed cycle functions of
software 77185x-04
New Cycle 258 POLYGON STUD, see "POLYGON STUD (Cycle
258, DIN/ISO: G258)", page 159
Cycle 225 has been expanded by parameters Q516, Q367,
and Q574. This makes it possible to define a datum for the
respective text position, as well as to scale the text length
and character height. The pre-positioning for engraving on a
circular path has changed, see "ENGRAVING (Cycle 225, DIN/
ISO: G225)", page 282
In Cycles 481 to 483, parameter Q340 was expanded with
the input option "2". This makes it possible to check the tool
without changing the tool table, see "Measuring tool length
(Cycle 31 or 481, DIN/ISO: G481)", page 453, see "Measuring
tool radius (Cycle 32 or 482, DIN/ISO: G482)", page 455,
see "Measuring tool length and radius (Cycle 33 or 483, DIN/
ISO: G483)", page 457
Cycle 251 has been expanded by parameter Q439. In addition,
the strategy for finishing was revised, see "RECTANGULAR
POCKET (Cycle 251, DIN/ISO: G251)", page 131
In Cycle 252, the strategy for finishing was revised, see
"CIRCULAR POCKET (Cycle 252, DIN/ISO: G252)", page 136
Cycle 275 has been expanded by parameters Q369 and
Q439, see "TROCHOIDAL SLOT (Cycle 275, DIN/ISO: G275)",
page 208
Cycle 247 DATUM SETTING: The number of the preset can be
selected from the preset table, see "DATUM SETTING (Cycle
247, DIN/ISO: G247)", page 257
Cycles 200 and 203: The behavior of the dwell time at top was
modified, see "UNIVERSAL DRILLING (Cycle 203, DIN/ISO:
G203)", page 74
Cycle 205 performs deburring on the coordinate surface,
see "UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205)",
page 81
For SL cycles, M110 is now taken into account for arcs
compensated on the inside of the arc if M110 is active during
machining, see "SL Cycles", page 186

Fundamentals
New and changed cycle functions of software 77185x-04
12 HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016

HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016 13
Contents
1 Fundamentals / Overviews............................................................................................................41
2 Using Fixed Cycles......................................................................................................................... 45
3 Fixed Cycles: Drilling......................................................................................................................63
4 Fixed Cycles: Tapping / Thread Milling........................................................................................93
5 Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling........................................................129
6 Fixed Cycles: Pattern Definitions................................................................................................ 175
7 Fixed Cycles: Contour Pocket......................................................................................................185
8 Fixed Cycles: Cylindrical Surface................................................................................................ 217
9 Fixed Cycles: Contour Pocket with Contour Formula...............................................................235
10 Cycles: Coordinate Transformations...........................................................................................249
11 Cycles: Special Functions............................................................................................................ 273
12 Using Touch Probe Cycles...........................................................................................................293
13 Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment.......................... 303
14 Touch Probe Cycles: Automatic Datum Setting........................................................................ 323
15 Touch Probe Cycles: Automatic Workpiece Inspection.............................................................375
16 Touch Probe Cycles: Special Functions......................................................................................419
17 Touch Probe Cycles: Automatic Tool Measurement..................................................................443
18 Tables of Cycles............................................................................................................................ 459

Contents
14 HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016

HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016 15
1 Fundamentals / Overviews............................................................................................................41
1.1 Introduction............................................................................................................................................42
1.2 Available Cycle Groups.........................................................................................................................43
Overview of fixed cycles........................................................................................................................ 43
Overview of touch probe cycles.............................................................................................................44

Contents
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2 Using Fixed Cycles......................................................................................................................... 45
2.1 Working with fixed cycles....................................................................................................................46
Machine-specific cycles...........................................................................................................................46
Defining a cycle using soft keys.............................................................................................................47
Defining a cycle using the GOTO function............................................................................................. 47
Calling a cycle......................................................................................................................................... 48
2.2 Program defaults for cycles................................................................................................................. 50
Overview................................................................................................................................................. 50
Entering GLOBAL DEF............................................................................................................................50
Using GLOBAL DEF information............................................................................................................ 51
Global data valid everywhere..................................................................................................................51
Global data for drilling operations...........................................................................................................52
Global data for milling operations with pocket cycles 25x..................................................................... 52
Global data for milling operations with contour cycles...........................................................................52
Global data for positioning behavior....................................................................................................... 53
Global data for probing functions........................................................................................................... 53
2.3 PATTERN DEF pattern definition......................................................................................................... 54
Application...............................................................................................................................................54
Entering PATTERN DEF.......................................................................................................................... 54
Using PATTERN DEF...............................................................................................................................55
Defining individual machining positions..................................................................................................55
Defining a single row..............................................................................................................................56
Defining a single pattern.........................................................................................................................57
Defining individual frames.......................................................................................................................58
Defining a full circle................................................................................................................................ 59
Defining a pitch circle............................................................................................................................. 59
2.4 Point tables............................................................................................................................................ 60
Application...............................................................................................................................................60
Creating a point table............................................................................................................................. 60
Hiding single points from the machining process.................................................................................. 61
Selecting a point table in the program................................................................................................... 61
Calling a cycle in connection with point tables...................................................................................... 62

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3 Fixed Cycles: Drilling......................................................................................................................63
3.1 Fundamentals........................................................................................................................................ 64
Overview................................................................................................................................................. 64
3.2 CENTERING (Cycle 240, DIN/ISO: G240)............................................................................................ 65
Cycle run................................................................................................................................................. 65
Please note while programming:............................................................................................................65
Cycle parameters.................................................................................................................................... 66
3.3 DRILLING (Cycle 200)............................................................................................................................67
Cycle run................................................................................................................................................. 67
Please note while programming:............................................................................................................67
Cycle parameters.................................................................................................................................... 68
3.4 REAMING (Cycle 201, DIN/ISO: G201)................................................................................................ 69
Cycle run................................................................................................................................................. 69
Please note while programming:............................................................................................................69
Cycle parameters.................................................................................................................................... 70
3.5 BORING (Cycle 202, DIN/ISO: G202)...................................................................................................71
Cycle run................................................................................................................................................. 71
Please note while programming:............................................................................................................72
Cycle parameters.................................................................................................................................... 73
3.6 UNIVERSAL DRILLING (Cycle 203, DIN/ISO: G203)...........................................................................74
Cycle run................................................................................................................................................. 74
Please note while programming:............................................................................................................74
Cycle parameters.................................................................................................................................... 75
3.7 BACK BORING (Cycle 204, DIN/ISO: G204)........................................................................................77
Cycle run................................................................................................................................................. 77
Please note while programming:............................................................................................................78
Cycle parameters.................................................................................................................................... 79
3.8 UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205)........................................................................... 81
Cycle run................................................................................................................................................. 81
Please note while programming:............................................................................................................82
Cycle parameters.................................................................................................................................... 83

Contents
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3.9 BORE MILLING (Cycle 208).................................................................................................................. 85
Cycle run................................................................................................................................................. 85
Please note while programming:............................................................................................................85
Cycle parameters.................................................................................................................................... 86
3.10 SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241, DIN/ISO: G241)....................................................... 87
Cycle run................................................................................................................................................. 87
Please note while programming:............................................................................................................87
Cycle parameters.................................................................................................................................... 88
3.11 Programming Examples....................................................................................................................... 90
Example: Drilling cycles.......................................................................................................................... 90
Example: Using drilling cycles in connection with PATTERN DEF..........................................................91

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4 Fixed Cycles: Tapping / Thread Milling........................................................................................93
4.1 Fundamentals........................................................................................................................................ 94
Overview................................................................................................................................................. 94
4.2 TAPPING with a floating tap holder (Cycle 206, DIN/ISO: G206).....................................................95
Cycle run................................................................................................................................................. 95
Please note while programming:............................................................................................................95
Cycle parameters.................................................................................................................................... 96
4.3 RIGID TAPPING without a floating tap holder (Cycle 207, DIN/ISO: G207)..................................... 97
Cycle run................................................................................................................................................. 97
Please note while programming:............................................................................................................98
Cycle parameters.................................................................................................................................... 99
Retracting after a program interruption.................................................................................................. 99
4.4 TAPPING WITH CHIP BREAKING (Cycle 209, DIN/ISO: G209)........................................................ 100
Cycle run............................................................................................................................................... 100
Please note while programming:..........................................................................................................101
Cycle parameters.................................................................................................................................. 102
4.5 Fundamentals of Thread Milling....................................................................................................... 104
Prerequisites..........................................................................................................................................104
4.6 THREAD MILLING (Cycle 262, DIN/ISO: G262).................................................................................106
Cycle run............................................................................................................................................... 106
Please note while programming:..........................................................................................................107
Cycle parameters.................................................................................................................................. 108
4.7 THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO: G263)...............................................110
Cycle run............................................................................................................................................... 110
Please note while programming:..........................................................................................................111
Cycle parameters.................................................................................................................................. 112
4.8 THREAD DRILLING/MILLING (Cycle 264, DIN/ISO: G264).............................................................. 114
Cycle run............................................................................................................................................... 114
Please note while programming:..........................................................................................................115
Cycle parameters.................................................................................................................................. 116

Contents
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4.9 HELICAL THREAD DRILLING/MILLING (Cycle 265, DIN/ISO: G265)...............................................118
Cycle run............................................................................................................................................... 118
Please note while programming:..........................................................................................................119
Cycle parameters.................................................................................................................................. 120
4.10 OUTSIDE THREAD MILLING (Cycle 267, DIN/ISO: G267)................................................................ 122
Cycle run............................................................................................................................................... 122
Please note while programming:..........................................................................................................123
Cycle parameters.................................................................................................................................. 124
4.11 Programming Examples..................................................................................................................... 126
Example: Thread milling........................................................................................................................126