HEIDENHAIN TNC 620 Programming Station User manual

TNC 620
User’s Manual
Cycle Programming
NC Software
817600-01
817601-01
817605-01
English (en)
3/2014

Fundamentals

Fundamentals
About this Manual
4TNC 620 | User's Manual Cycle Programming | 3/2014
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
TNC 620 | User's Manual Cycle Programming | 3/2014 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 620 817600-01
TNC 620 E 817601-01
TNC 620 Programming Station 817605-01
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.
User's Manual:
All TNC functions that have no connection with
cycles are described in the User's Manual of the TNC
620. Please contact HEIDENHAIN if you require a
copy of this User’s Manual.
ID of User's Manual for conversational programming:
1096883-xx.
ID of User’s Manual for DIN/ISO programming:
1096887-xx.

Fundamentals
TNC model, software and features
6TNC 620 | User's Manual Cycle Programming | 3/2014
Software options
The TNC 620 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:
Hardware options
■1st additional axis for 4 axes plus spindle
■2nd additional axis for 5 axes plus spindle
Software option 1 (option number 08)
Rotary table machining ■Programming of cylindrical contours as if in two axes
■Feed rate in distance per minute
Coordinate transformation ■Tilting the working plane
Interpolation ■Circle in 3 axes with tilted working plane (spatial arc)
Software option 2 (option number 09)
■Motion control with minimum jerk
■3-D tool compensation through surface normal vectors
■Using the electronic handwheel to change the angle of the swivel head
during program run without affecting the position of the tool point.
(TCPM = Tool Center Point Management)
3-D machining
■Keeping the tool normal to the contour
■Tool radius compensation perpendicular to traversing and tool direction
Interpolation ■Linear in 5 axes (subject to export permit)
Touch probe function software option, (option number 17)
■Compensation of tool misalignment in automatic mode
■Datum setting in the Manual Operation mode
■Datum setting in automatic mode
■Automatic workpiece measurement
Touch probe cycles
■Automatic tool measurement
HEIDENHAIN DNC (option number 18)
■Communication with external PC applications over COM component

TNC model, software and features
TNC 620 | User's Manual Cycle Programming | 3/2014 7
Advanced programming features software option (option number 19)
FK free contour
programming
■Programming in HEIDENHAIN conversational format with graphic
support for workpiece drawings not dimensioned for NC
■Peck drilling, reaming, boring, counterboring, centering (Cycles 201 to
205, 208, 240, 241)
■Milling of internal and external threads (Cycles 262 to 265, 267)
■Finishing of rectangular and circular pockets and studs (Cycles 212 to
215, 251 to 257)
■Clearing level and oblique surfaces (Cycles 230 to 233)
■Straight slots and circular slots (Cycles 210, 211, 253, 254)
■Linear and circular point patterns (Cycles 220, 221)
■Contour train, contour pocket—also with contour-parallel machining
(Cycles 20 to 25)
Fixed cycles
■OEM cycles (special cycles developed by the machine tool builder) can
be integrated
Advanced graphic features software option (option number 20)
■Plan view
■Projection in three planes
Program verification
graphics, program-run
graphics
■3-D view
Software option 3 (option number 21)
Tool compensation ■M120: Radius-compensated contour look-ahead for up to 99 blocks
3-D machining ■M118: Superimpose handwheel positioning during program run
Pallet management software option (option number 22)
■Pallet management
Display step (option number 23)
■Linear axes down to 0.01 µmInput resolution and display
step ■Rotary axes to 0.00001°

Fundamentals
TNC model, software and features
8TNC 620 | User's Manual Cycle Programming | 3/2014
DXF Converter software option (option number 42)
■Supported DXF format: AC1009 (AutoCAD R12)
■For contours and point patterns
■Simple and convenient specification of reference points
Extracting contour
programs and machining
positions from DXF data.
Extracting contour sections
from plain-language
programs.
■Select graphical features of contour sections from conversational
programs
KinematicsOpt software option (option number 48)
■Backup/restore active kinematics
■Test active kinematics
Touch-probe cycles for
automatic testing and
optimization of the machine
kinematics ■Optimize active kinematics
Cross Talk Compensation (CTC) software option (option number 141)
■Determination of dynamically caused position deviation through axis
acceleration
Compensation of axis
couplings
■Compensation of the TCP
Position Adaptive Control (PAC) software option (option number 142)
■Changing of the control parameters depending on the position of the
axes in the working space
Changing control
parameters
■Changing of the control parameters depending on the speed or
acceleration of an axis
Load Adaptive Control (LAC) software option (option number 143)
■Automatic determination of workpiece weight and frictional forcesDynamic changing of control
parameters ■Continuous adaptation of the parameters of the adaptive precontrolling
to the actual weight of the workpiece during machining
Active Chatter Control (ACC) software option (option number 145)
Fully automatic function for chatter control during machining

TNC model, software and features
TNC 620 | User's Manual Cycle Programming | 3/2014 9
Feature Content Level (upgrade functions)
Along with software options, significant further improvements
of the TNC software are managed via the Feature Content Level
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 and Editing operating mode
MOD function
License Info softkey

Fundamentals
New cycle functions of software 73498x-02
10 TNC 620 | User's Manual Cycle Programming | 3/2014
New cycle functions of software 73498x-02
New fixed cycle 225 Engraving, see "ENGRAVING (Cycle 225,
DIN/ISO: G225)", page 284
With Cycle 256, Rectangular Stud, a parameter is now available
with which you can determine the approach position on the
stud, see "RECTANGULAR STUD (Cycle 256, DIN/ISO: G256,
software option 19)", page 150
With Cycle 257, circular stud milling, a parameter is now
available with which you can determine the approach position
on the stud, see "CIRCULAR STUD (Cycle 257, DIN/ISO: G257,
software option 19)", page 154
Cycle 402 now also allows you to compensate workpiece
misalignment by rotating the rotary table, see "BASIC
ROTATION over two studs (Cycle 402, DIN/ISO: G402, software
option 17)", page 306
New Touch Probe Cycle 484 for calibrating the wireless TT 449
touch probe, see "Calibrate the wireless TT 449 (Cycle 484, DIN/
ISO: G484, software option 17 Touch Probe Functions software
option 17)", page 473
New manual probing cycle "Center line as datum" (see User's
Manual)
Predefined values can now be entered into a cycle parameter
with the PREDEF function in cycles, see "Program defaults for
cycles", page 50
The following improvements were made to the KinematicsOpt
cycles:
Newer, faster optimization algorithm
After angle optimization, a separate measurement series
is no longer required for position optimization, see "Various
modes (Q406)", page 452
Return of the offset errors (change of machine datum) to the
parameters Q147 to 149, see "Cycle run", page 440
Up to eight plane measuring points for the measurement of
spheres, see "Cycle parameters", page 449
The active tool-axis direction can now be activated in manual
mode and during handwheel superimposition as a virtual tool
axis (see User's Manua).

New cycle functions of software 81760x-01
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New cycle functions of software 81760x-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 284
New fixed cycle 275 Trochoidal Milling see "TROCHOIDAL SLOT
(Cycle 275, DIN ISO G275, software option 19)", page 191
New fixed cycle 233 Face Milling see "FACE MILLING (Cycle
233, DIN/ISO: G233, software option 19)", page 242
In Cycle 205 Universal Pecking you can now use parameter
Q208 to define a feed rate for retraction see "Cycle parameters",
page 84
In the thread milling cycles 26x an approaching feed rate was
introduced see "Cycle parameters", page 111
The input parameter Q305 NUMBER IN TABLE was added to
Cycle 404 see "Cycle parameters", page 312
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 84
Cycle 241 SINGLE-LIP DEEP HOLE DRILLING was expanded
by several input parameters see "SINGLE-LIP DEEP-HOLE
DRILLING (Cycle 241, DIN/ISO: G241, software option 19)",
page 89
The probing cycle 4 MEASURING IN 3-D was introduced see
"MEASURING IN 3-D (Cycle 4, software option 17)", page 421

Fundamentals
New cycle functions of software 81760x-01
12 TNC 620 | User's Manual Cycle Programming | 3/2014

TNC 620 | User's Manual Cycle Programming | 3/2014 13
Contents
1 Cycle fundamentals / Overviews..................................................................................................41
2 Using Fixed Cycles......................................................................................................................... 45
3 Fixed Cycles: Drilling......................................................................................................................65
4 Fixed Cycles: Tapping / Thread Milling........................................................................................ 95
5 Fixed cycles: Pocket milling / stud milling / slot milling......................................................... 131
6 Fixed Cycles: Pattern Definitions................................................................................................ 161
7 Fixed Cycles: Contour Pocket......................................................................................................171
8 Fixed Cycles: Cylindrical Surface................................................................................................ 201
9 Fixed Cycles: Contour Pocket with Contour Formula...............................................................215
10 Fixed Cycles: Multipass Milling.................................................................................................. 229
11 Cycles: Coordinate Transformations........................................................................................... 251
12 Cycles: Special Functions............................................................................................................ 275
13 Using Touch Probe Cycles........................................................................................................... 287
14 Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment.......................... 297
15 Touch Probe Cycles: Automatic Datum Setting........................................................................ 319
16 Touch Probe Cycles: Automatic Workpiece Inspection.............................................................373
17 Touch Probe Cycles: Special Functions......................................................................................417
18 Touch Probe Cycles: Automatic Kinematics Measurement......................................................433
19 Touch Probe Cycles: Automatic Tool Measurement..................................................................465
20 Tables of Cycles............................................................................................................................ 481

Contents
14 TNC 620 | User's Manual Cycle Programming | 3/2014

TNC 620 | User's Manual Cycle Programming | 3/2014 15
1 Cycle 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
16 TNC 620 | User's Manual Cycle Programming | 3/2014
2 Using Fixed Cycles......................................................................................................................... 45
2.1 Working with fixed cycles....................................................................................................................46
Machine-specific cycles (software option19).......................................................................................... 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..................................................................................................................52
Global data for drilling operations...........................................................................................................52
Global data for milling operations with pocket cycles 25x..................................................................... 52
Global data for milling operations with contour cycles...........................................................................53
Global data for positioning behavior....................................................................................................... 53
Global data for probing functions........................................................................................................... 53
2.3 PATTERN DEF pattern definition......................................................................................................... 54
Application...............................................................................................................................................54
Entering PATTERN DEF.......................................................................................................................... 55
Using PATTERN DEF...............................................................................................................................55
Defining individual machining positions..................................................................................................56
Defining a single row..............................................................................................................................56
Defining a single pattern.........................................................................................................................57
Defining individual frames.......................................................................................................................58
Defining a full circle................................................................................................................................ 59
Defining a pitch circle............................................................................................................................. 60
2.4 Point tables............................................................................................................................................ 61
Application...............................................................................................................................................61
Creating a point table............................................................................................................................. 61
Hiding single points from the machining process.................................................................................. 62
Selecting a point table in the program................................................................................................... 62
Calling a cycle in connection with point tables...................................................................................... 63

TNC 620 | User's Manual Cycle Programming | 3/2014 17
3 Fixed Cycles: Drilling......................................................................................................................65
3.1 Fundamentals........................................................................................................................................ 66
Overview................................................................................................................................................. 66
3.2 CENTERING (Cycle 240, DIN/ISO: G240, software option 19).......................................................... 67
Cycle run................................................................................................................................................. 67
Please note while programming:............................................................................................................67
Cycle parameters.................................................................................................................................... 68
3.3 DRILLING (Cycle 200)............................................................................................................................69
Cycle run................................................................................................................................................. 69
Please note while programming:............................................................................................................69
Cycle parameters.................................................................................................................................... 70
3.4 REAMING (Cycle 201, DIN/ISO: G201, software option 19).............................................................. 71
Cycle run................................................................................................................................................. 71
Please note while programming:............................................................................................................71
Cycle parameters.................................................................................................................................... 72
3.5 BORING (Cycle 202, DIN/ISO: G202, software option 19).................................................................73
Cycle run................................................................................................................................................. 73
Please note while programming:............................................................................................................74
Cycle parameters.................................................................................................................................... 75
3.6 UNIVERSAL DRILLING (Cycle 203, DIN/ISO: G203, software option 19).........................................76
Cycle run................................................................................................................................................. 76
Please note while programming:............................................................................................................76
Cycle parameters.................................................................................................................................... 77
3.7 BACK BORING (Cycle 204, DIN/ISO: G204, software option 19)......................................................79
Cycle run................................................................................................................................................. 79
Please note while programming:............................................................................................................80
Cycle parameters.................................................................................................................................... 81
3.8 UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205, software option 19)..........................................82
Cycle run................................................................................................................................................. 82
Please note while programming:............................................................................................................83
Cycle parameters.................................................................................................................................... 84

Contents
18 TNC 620 | User's Manual Cycle Programming | 3/2014
3.9 BORE MILLING (Cycle 208, software option 19)................................................................................86
Cycle run................................................................................................................................................. 86
Please note while programming:............................................................................................................87
Cycle parameters.................................................................................................................................... 88
3.10 SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241, DIN/ISO: G241, software option 19)......................89
Cycle run................................................................................................................................................. 89
Please note while programming:............................................................................................................89
Cycle parameters.................................................................................................................................... 90
3.11 Programming Examples....................................................................................................................... 92
Example: Drilling cycles.......................................................................................................................... 92
Example: Using drilling cycles in connection with PATTERN DEF..........................................................93

TNC 620 | User's Manual Cycle Programming | 3/2014 19
4 Fixed Cycles: Tapping / Thread Milling........................................................................................ 95
4.1 Fundamentals........................................................................................................................................ 96
Overview................................................................................................................................................. 96
4.2 TAPPING with a floating tap holder (Cycle 206, DIN/ISO: G206).....................................................97
Cycle run................................................................................................................................................. 97
Please note while programming:............................................................................................................98
Cycle parameters.................................................................................................................................... 99
4.3 RIGID TAPPING without a floating tap holder (Cycle 207, DIN/ISO: G207)................................... 100
Cycle run............................................................................................................................................... 100
Please note while programming:..........................................................................................................101
Cycle parameters.................................................................................................................................. 102
4.4 TAPPING WITH CHIP BREAKING (Cycle 209, DIN/ISO: G209, software option 19).......................103
Cycle run............................................................................................................................................... 103
Please note while programming:..........................................................................................................104
Cycle parameters.................................................................................................................................. 105
4.5 Fundamentals of Thread Milling....................................................................................................... 107
Prerequisites..........................................................................................................................................107
4.6 THREAD MILLING (Cycle 262, DIN/ISO: G262, software option 19)...............................................109
Cycle run............................................................................................................................................... 109
Please note while programming:..........................................................................................................110
Cycle parameters.................................................................................................................................. 111
4.7 THREAD MILLING/COUNTERSINKING (Cycle 263, DIN/ISO:G263, software option 19).............. 113
Cycle run............................................................................................................................................... 113
Please note while programming:..........................................................................................................114
Cycle parameters.................................................................................................................................. 115
4.8 THREAD DRILLING/MILLING (Cycle 264, DIN/ISO: G264, software option 19).............................117
Cycle run............................................................................................................................................... 117
Please note while programming:..........................................................................................................118
Cycle parameters.................................................................................................................................. 119

Contents
20 TNC 620 | User's Manual Cycle Programming | 3/2014
4.9 HELICAL THREAD DRILLING/MILLING (Cycle 265, DIN/ISO: G265, software option 19)............. 121
Cycle run............................................................................................................................................... 121
Please note while programming:..........................................................................................................122
Cycle parameters.................................................................................................................................. 123
4.10 OUTSIDE THREAD MILLING (Cycle 267, DIN/ISO: G267, software option 19)............................... 125
Cycle run............................................................................................................................................... 125
Please note while programming:..........................................................................................................126
Cycle parameters.................................................................................................................................. 127
4.11 Programming Examples..................................................................................................................... 129
Example: Thread milling........................................................................................................................129