Functions of the

TNC 640Comparison with the iTNC 530

September 2015

2

Highlights of the TNC 640

The new 3-D simulation graphics

User-friendly and practical

For more than 35 years, TNC controls from HEIDENHAIN have been proving themselves in daily use on milling, drilling and boring machines, as well as machining centers. This success is due in part to their shop-oriented programmability, but also to their uniform operating concept and their compatibility with programs of the predecessor models. The great reliability of HEIDENHAIN controls has also played its part in making the name TNC a synonym for quality and performance. Now the TNC 640 is continuing to live this tradition.

The TNC 640 can adapt optimally to your company’s needs. Regardless of whether you write programs directly on the control or externally with a programming system, the TNC 640 supports you in your daily work with well proven but also new functions. One of the most extensive innovations is surely the trueness to detail of its unrivaled 3-D simulation graphics, which provide you with even more capabilities in simulation. It displays the workpiece at random viewing angles and simulates both milling and turning operations in a single view.

What can the new graphics do?

• Depict the workpiece in a high-resolution 3-D graphic simulation

• Display the tool path as 3-D line graphics• Display a transparent tool or workpiece• Color the machined surfaces differently

for each tool• Highlight workpiece edges• Depict the point angle of the tool• Simulate milling and turning operations• Present a plan view with different

shades of depth• Defi ne workpiece blanks as cuboids,

cylinders, tubes or rotationally symmetric parts with any desired contour

• Display the workpiece in three projections

• Show real time graphics of machining progress

High trueness of detail

With the new 3-D graphic simulation, you can exactly evaluate the result of milling, drilling or turning processes even before actual machining. The graphic simulation is so detailed that you can detect undesired surface irregularities already in the simulation phase.

However, you don't always have to simulate your components at the highest resolution. Depending on the respective requirements you can choose from four different resolutions—depending on which you value more: very high trueness to detail or fast generation.

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Multifaceted display modes

Color highlighting of the workpiece with another color used for each new tool helps the operator to identify individual work steps and makes it easier to assign the tools used. In addition, you can hide or show the tool or show it as solid or transparent. You can also simulate the workpiece in a transparent view. You can select simulation modes as usual between the top view, view in three planes, 3-D simulation or 3-D line graphics.

Optimal control of tool paths

In the 3-D simulation, you can display the programmed tool-center path as a line graphic. You can already see during the simulation which path the tool takes, including non-cutting paths such as in approach and departure movements. You should especially use this graphic mode to inspect programs created offl ine for irregularities before machining, in order to

avoid undesirable traces of the machining process on the workpiece, e.g. when points are output incorrectly by the postprocessor. Here the 3-D line graphics are particularly helpful for recognizing even very fi ne details. It enables you to detect undesired tool movements, localize danger zones and fi nally optimize your program.

Simulating complex jobs

The new 3-D simulation graphic enables you to simulated machining in the perpen-dicular machining position, in the tilted plane or to simulate complex simultaneous 5-axis machining. The TNC 640 is also capable of depicting the tool’s point angle. Even machining operations such as chamfering, countersinking or deburring are displayed in the powerful graphics. For the user, this results in better inspection capabilities as well as improved safety and reliability.

Your benefi ts

• Detecting critical tool movements

Have tool paths displayed to enable you to detect undesired tool movements during simulation and before actual machining

• Minimize scrap The detailed graphics let you recognize unwanted machining effects early on

• Quickly fi nd the tool used You can see at a glance which tool performed which operation

• Complete simulation

5-axis milling, turning, drilling, boring, countersinking, chamfering

• Scalable details

Simple selection between very high resolution and accuracy or fast graphic build-up

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Highlights of the TNC 640

Milling-turning – multi-operation machining in one setup

Productivity in manufacturing

To increase the productivity of a CNC machine, different machining methods, such as milling and turning, are often performed on the same machine. Changing spectra of parts, fl exibility in machining planning and the requirement to reduce non-cutting time place great demands on the machine and the control. The TNC 640 is capable of combined milling and turning operations on the same machine. In this way you not only save space and money for another machine, but thanks to multi-operation machining on a milling-turning machine it also avoids inaccuracies caused by workpiece rechucking.

Simple switching between turning and

milling

The TNC 640 offers you powerful functions that enable you to switch the NC program as desired between turning and milling. This enables you to decide with complete freedom how and when to combine the two machining methods. And of course, the operations switch back and forth regardless of the machine and its axis confi guration. During switchover, the TNC 640 assumes all necessary internal changes, such as switching to diameter display, setting the datum in the center of the rotary table, and even machine-dependent functions such as clamping the tool spindle.

Conveniently managing turning tools

The TNC 640’s central tool management enables you to administer turning tools in a convenient, clear-cut manner. It’s even more powerful with the optional expanded tool management. A tool usage list provides information as to which tools are cutting for how long. Well-designed, color coded tables show you the various tool statuses.

Well-proven range of functions

The fi eld-proven HEIDENHAIN lathe controls provide the software basis for the turning functions. Here you also have contour elements unique to turning, such as recesses or thread undercutting. Besides the standard path functions you can also use FK free contour programming to easily create contour elements. This type of programming is especially helpful when contour elements are not conventionally dimensioned for NC—because even these contours can be programmed easily.

If a turning contour exists in DXF format, you can easily import it with the aid of the DXF converter (option).

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Large selection of turning cycles

HEIDENHAIN controls have always been known for their comprehensive package of cycles. Frequently recurring machining cycles that comprise several steps are saved as standard cycles. The user therefore enjoys conversational guidance to program both milled and turned contours on the TNC 640 and are supported by valuable help graphics that clearly illustrate the required input parameters. Cycles for clearing, recessing, tapping or eccentric turning are part of the TNC 640’s cycle package.

Fast familiarization

You can create your turning programs in the usual manner in HEIDENHAIN plain-language dialog. In more sophisticated contour turning cycles, the TNC 640 uses the same techniques as used for milling. TNC programmers can continue to rely on what they already know and quickly fi nd their way into the world of turning—on a milling machine.

Interpolation Turning

You can manufacture ring nuts, recesses, tapers or any turning contours not only using conventional turning, but also through interpolation turning. During interpolation turning, the tool executes a circular movement with the linear axes. The cutting edge is always oriented to the center of the circle for outside machining, or away from the center for inside machining. By varying the circle radius and the axial position, any rotationally symmetric objects can be produced—even in the tilted working plane. The TNC 640 offers two cycles for interpolation turning:• Cycle 291: Switches on the coupling

between the spindle positions and axis positions. You can then program any desired axial or radial tool movements.

• Cycle 292: Switches on the spindle coupling and then automatically controls the machining of a programmed turning contour.

Your benefi ts

• Reduce nonmachining time

Turning and milling on the same machine

• Avoid inaccuracy

No rechucking of the workpiece on a lathe is required

• Easy introduction

You program as usual in HEIDENHAIN plain-language dialog

• Effi cient programming

Cycles enable you to program quickly • Straightforward management

Convenient tool administration• Application of well proven

know-how

Use of software basis from HEIDENHAIN lathe controls

• Use turning operations fl exibly

Interpolation turning is also attractive for rotationally non-symmetrical objects

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Highlights of the TNC 640

ADP – Advanced Dynamic Prediction

Strengths of ADP

The Advanced Dynamic Prediction feature (ADP) expands the conventional look-ahead of the permissible maximum feed rate profi le and makes optimized motion control possible to produce faultless surfaces and perfect contours. ADP shows its strengths for example during bidirectional fi nish milling through symmetrical feed behavior on the forward and reverse paths as well as through particularly smooth feed rate curves on parallel milling paths.

Optimized user interface

An insuffi cient quality of data in NC programs created on CAM systems frequently causes inferior surface quality of the milled workpieces. The Advanced Dynamic Prediction feature (ADP) expands the previous look-ahead of the permissible maximum feed rate profi le, thereby enabling optimized motion control of the feed rate axes with 3-axis and 5-axis milling. This enables you to mill “clean” surfaces in short machining times—even when point distribution fl uctuates greatly between neighboring tool paths.

Reduced feed-rate fl uctuation

The control dynamically calculates the contour in advance and can therefore use an acceleration-limited motion control with smoothed jerk to adapt the axis velocity at contour transitions. Reduced data resolution in NC programs or uneven point distribution no longer result in feed rate fl uctuations or limit surface quality.

The graphic below shows that more even feed-rate profi les are attained with ADP. Feed rate fl uctuation without ADP lies in the range of between 1600 mm/min and 1800 mm/min, while feed rate fl uctuation with ADP is only between approx. 1780 mm/min and 1800 mm/min. The optimized feed rate profi le improves surface quality—the difference is detectable with the naked eye (see photo).

Your benefi ts

• Higher contouring speeds

• Shorter machining times

• Optimal surface profi les

With ADP, the tool center point is moved more evenly and precisely.

With ADP Without ADP

Feed rate

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Programming

Optimized editor for clear and simple operation

Simplifi ed handling

The TNC 640 also offers a number of features that make working with the control even easier and user-friendlier than ever. NC programs can be created more easily, the editor is even more powerful, the handling of DXF fi les was simplifi ed, PDF fi les can be displayed directly on the control—these are just some of the TNC 640’s new functions. The TNC 640’s user interface not also features a more modern appearance with slightly rounded forms, color gradients and a font with uniform appearance.

Context-sensitive cutting data calculator

The input and calculation of technology data is a fi xed part of program creation. With the context-sensitive cutting data calculator, operators can calculate spindle speed and feed rate for the specifi c machining process and adopt these values directly into the open feed rate or speed dialog. The cutting-data calculator recognizes the respective context and automatically queries the required input data.

Practical selection of functions with

smartSelect

With smartSelect you enjoy dialog guid-ance for selecting functions quickly and easily that up to now were accessible only through the soft-key structure. Moreover, in the right part of the smartSelect window, the TNC displays the integrated help.

Your benefi ts

• Better readability of NC programs

Clear-cut, user-friendly user-interface, modern appearance and color combinations

• User-friendly selection of functions

Orientation aid for the selection of functions is provided by smartSelect

• Calculate technology data quickly

and easily

Context-sensitive cutting data calculator supports the user

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The new face milling cycle

Face milling cycles have long been a feature of HEIDENHAIN TNC controls. But the new face milling cycle 233 can do far more than only machine a plane surface in multiple infeeds.

In Cycle 233 you can defi ne up to three side surfaces that then limit the machining of the face. Moreover, various machining strategies are available, e.g. spiral clearing of the face or multipass milling in parallel lines.

Hobbing of external teeth

With Cycle 880 Gear Hobbing you can machine external cylindrical gears or helical gears with any angles. During hobbing, the rotation of the tool spindle and that of the rotary table are synchronized. In addition, the gear hob moves along the workpiece in axial direction. The new Cycle 880 automatically controls these complex movements and enables you to enter all relevant values easily and practically. You can use the tooth parameters directly from your drawing—the cycle calculates from them the course of fi ve-axis movement.

Programming

Improved functions and cycles make programming even easier

Parallel-axis functions

If your machine is equipped with secondary axes, the TNC 640 supports you with several well-proven parallel-axis functions:• The traverse of a secondary axis (U, V, W)

is compensated by the traverse of the associated principal axis (X, Y, Z)

• Traverse movements of parallel axes are calculated into the position display of the associated principal axis (sum display)

• Program the workpiece as usual with the coordinate entries of the principal axes and then specify the axes with which the workpiece is to be machined, e.g. the X, Y and W axis

Cylinder surface machining

With the TNC 640 it is quite easy to program contours on cylindrical surfaces: You simply program the contour in a plane as if the cylinder surface were unrolled. The TNC 640 then machines the corresponding cylindrical contour.

So with the TNC 640 you can program cylinder-surface contours independently of your machine confi guration. The machine on which you later run the program plays no role for programming.

The TNC 640 features four cycles for cylindrical surface machining:• Slot milling (the slot width is the same as

the tool diameter)• Guide-groove milling (the slot width is

greater than the tool diameter)• Ridge milling• Mill outside of contour

Your benefi ts

• More effective face milling

The new Cycle 233 offers the right machining strategy for any requirement

• Flexibility in machine planning

Program cylinder-surface contours regardless of the machine confi guration

• Simple handling of parallel axes

Program the part in X, Y, Z, for example, and have it machined in U, V, W

• Effi cient gear manufacturing

Fast and simple programming and manufacturing of external teeth

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Calibration cycles guarantee high

process reliability

Before you use a touch probe, you have to ascertain the exact dimensions and the center offset. The TNC 640 offers several calibration cycles that allow you to fi nd these values simply and at the same time precisely. You decide for yourself whether to use a calibrating mandrel, a calibration ring or a calibration sphere.

Manual probing cycles

The manual scanning cycles have been expanded by several new functions that make machine setup even easier.

On a machine with a rotary table, for example, you can correct the misalignment of a workpiece directly from a probing cycle by turning the table. Moreover, now you can also align a plane using a manual probing cycle. You simply probe three points in a plane and the cycle calculates the appropriate basic rotation. By positioning the tilting axes, the cycle can also align the component spatially. In addition, all manual probing cycles also provide automatic probing routines for holes and circular studs. For circle calculation, the TNC uses special algorithms that ensure highly accurate measuring results.

Dynamic Collision Monitoring – DCM

Whenever a collision is imminent, the dynamic collision monitoring (DCM) stops machining and thus increases safety for the machine and the operator. The TNC graphically shows you which machine components are on a collision course while also issuing the appropriate error message. This helps to prevent machine damage, which can result in costly downtimes. Unattended shifts become safer and more reliable. The DCM collision monitoring supports you both in automatic mode as well as in manual traverse of the machine axes.

In particular the new 3-D format for collision bodies offers appealing benefi ts:• Simple data transfer of standard 3-D

formats• Fully detailed illustration of machine

components• Greater exploitation of the working

space

Clearly structured touch probe table

When you are using a touch probe, several settings are required that infl uence the probing behavior. The TNC 640 manages these settings centrally and straightfor-wardly in a touch probe table. Here you can easily access all important settings

Setting up the machine

Application-oriented probing functions

such as touch probe type, feed rate, safety clearance and probing path and have all necessary data in view. Now you can use the override control knob to superimpose motion on the probing feed rates defi ned in the touch probe table.

Your benefi ts

• Calibration made easy

Fully automatic calibration of the touch probe

• Convenient setup

Alignment of clamped workpieces with a probing cycle and automatic probing routine for holes and circular studs

• Managing multiple touch probe fi les

Straightforward central management of touch probe fi les

• Infl uencing the feed rate using the

override control knob

Adjusting velocity during probing without compromising accuracy

• Risk reduction

Avoid collisions in automatic mode and in manual operation

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Execution of NC programs

Precise and straightforward manufacturing of parts

Higher input resolutions

The display step option enables you to increase the resolution of the input coordinates in the NC program. That makes it possible now to expand the input range to 0.01 µm or 0.000 01°. This enables the programmer to more precisely defi ne the tool path, especially for machining very small steps on lightly curved free-form surfaces. It also permits the control to plan the feed rate profi le more exactly and, in particular, to optimize the cutter behavior with angle data.

Automatic axis load ascertainment

The dynamic behavior of machines with moving tables is infl uenced by the mass or mass moment of inertia of the fi xed workpiece.

The LAC option (Load Adaptive Control) and Cycle 239 ASCERTAIN THE LOAD, enables the control to automatically

ascertain the workpiece’s current mass, mass moment of inertia and the friction forces. In order to optimize changed control behavior at differing loads, adaptive feedforward controls can exploit data on acceleration, holding torque, static friction and friction at high shaft speeds. During workpiece machining, the control can also continuously adjust the parameters of the adaptive feedforward control to the current mass of the workpiece.

Permanent display of process-relevant

Q parameters

The TNC 640 can display an additional status window in Manual Operation, Program Run and Test Run. Process-relevant Q parameters can be shown in this window—either permanently or only when desired. Depending on the respective requirements, you can select as desired which Q, QS, QL, and QR parameters are shown in the status window.

Observing the program progress on the

screen

The direct observation of the milling process is often only partially possible due to the coolant and the safety enclosure The TNC 640 therefore shows a real-time graphic of the machining progress. You can use free moments to take a glance at a keystroke at the progress of workpiece machining. You can choose as usual between plan view, projection in three planes, 3-D view, 3-D line graphics and section detail enlargement.

Your benefi ts

• Optimized milling behavior

Increase input resolution for an even more precisely defi ned cutter path

• Best possible orientation

Show process-relevant Q parameters a separate window

• Machining always in view

The current machining situation is depicted in the graphic

• Process-oriented dynamic

evaluation

Adapting the machine dynamics before and during machining to the current workpiece mass

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Optimizing productivity

Dynamic Effi ciency – effi cient roughingDynamic Precision – exact fi nishing

Dynamic Effi ciency

Dynamic Effi ciency makes heavy machining and roughing more effi cient while also enhancing process reliability. Higher metal removal rates and increased productivity along with the avoidance of tool overload are achieved—thanks to the following functions:• Active Chatter Control (ACC) – This

option reduces chatter tendencies and permits greater infeeds

• Adaptive Feed Control (AFC) – Automatic feed-rate adjustment depending on the spindle power

• Trochoidal milling – Roughing of slots and pockets in a manner that eases the load on the tool and the machine

Dynamic Precision

Dynamic Precision combines the competing demands for accuracy, high surface quality and short machining times. The effects of compliance and vibration are countered with intelligent control technology.• CTC – Compensation of acceleration-

dependent position errors• AVD – Active Vibration Damping• PAC – Position-dependent adaptation of

controller parameters• LAC – Load-dependent adaptation of

control parameters• MAC – Motion-dependent adaptation of

control parameters

Functions are perfectly matched

Dynamic Effi ciency and Dynamic Precision can achieve dramatic successes: not only is the metal removal rate increased by 20 to 25 percent in practice (Dynamic Effi ciency), dimensional accuracy and surface defi nition are also improved (Dynamic Precision).

For the user, this is a decisive improvement of the machining process: it exploits the full potential of the machine and tool while at the same time reducing the mechanical load on the machine.

Your benefi ts

• Increased metal removal rate

Dynamic Effi ciency• Improved surface defi nition

Dynamic Precision• Increased accuracy

Dynamic Precision

Without CTC: Contour damage through position error

With CTC: Precise tool movements yield an exact contour

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Effi ciency in manufacturing

The TNC 640 integrates itself into the process chain

The TNC 640 in your process chain

The TNC 640—the high-end control from HEIDENHAIN—stands for highest productivity and accuracy with very user-friendly operation. Economic manufacturing additionally demands an effi ciently working process chain regarding: • Design• Programming• Simulation• Production planning• ProductionProcess chains can vary widely, depending on the size and manufacturing depth of a company. The uniform goal of any manufacturing company, however, is to improved effi ciency in the workshop. The key to manufacturing success lies in perfectly functioning knowledge transfer.

IT systems within a process chain

All those involved in a process should always have current product Information available in digital form. To transfer knowledge quickly and without loss, effective communication via e-mail is just as much a matter of course as the universal availability of electronic production documents. The prevention of gaps in information and insuffi cient information must therefore have fi rst priority. The tools and raw materials in stock, tool data, fi xture setups, CAD data, NC programs, and inspection instructions must be available to machine operators across all shifts. HEIDENHAIN offers you two different solutions for propagating knowledge to the workshop and bring your data to the TNC 640 control user interface.

Standard performance range

Even the standard features of the TNC 640 offer interesting applications. A CAD viewer, PDF viewer oder the web browser Mozilla Firefox provides access to manufacturing process data right at the control. Viewing with the browser requires no separate program installation. The operation of web-based documentation software or ERP systems is just as possible here as access to your e-mail inbox.

Also, HEIDENHAIN offers an expanded solution for integrating the TNC 640 in your process chain: with Option 133, REMOTE DESKTOP MANAGER, and an industrial PC (IPC) from HEIDENAIN you can directly access the IT systems of your process chain.

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k

CAM

ERP

PPS

CAD

TNC 640 IPC++

Documents

E-mail

Option 133 and an industrial PC (IPC)

Option 133 enables you to operate a Windows PC directly from the TNC 640. With a simple keystroke on the machine operating panel you can switch between the control screen and the screen of the Windows PC. It can be a computer in the local network or an industrial PC (IPC) in the machine’s electrical cabinet. With the IPC 6641, HEIDENHAIN offers an industrial PC with very high computing power and the newest processor architecture for installation in an electrical cabinet. This enables you to easily and effi ciently solve even the most computationally intensive tasks in CAD/CAM on your TNC control.

The TNC 640 makes your digital knowledge transfer surprisingly simple. Optimize your processes and use its full innovative potential in your workshop.

Your benefi ts

• Windows-based applications

directly on your TNC 640

Operate CAD/CAM system or manage job orders

• Enhance competitiveness through

an optimized information fl ow

Gaps in information cost valuable time and resources: optimized your data fl ow on the TNC 640

• Use PC functions without draining

on your machine's performance

Remote access removes the burden from the TNC control

• More effi ciency in manufacturing

Uniform data exchange and optimally coordinated processes enable economical production

• Numerous functions in the standard

version

Even without options, the TNC 640 enables you to improve many processes in the workshop

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Functions of the TNC 640

New functions

New functions of the TNC 640

Highlights High resolution 3-D simulation graphics

• Transparent depiction of the workpiece and tool• Tool-specifi c coloring of the workpiece• The point angle of the tool is considered in the 3-D simulation graphics• Milling and turning operations can be simulated• Workpiece blank defi nition: cuboids, cylinders, tubes or rotationally symmetric parts with any desired

contourFunctions for turning operations:

• Integrated in HEIDENHAIN plain language• Constant surface speed• Tool-tip radius compensation• Extensive package of cycles• Stock removal, recessing, tapping, eccentric turning• Updating of the workpiece blank during contour cycles• Path functions for recesses and undercuts• Management of various lathe tool types• Simple programming of turning operations with inclined tool• Chip breaking feature for long-chipping materials• A plunging feed rate can be programmed for all recess turning cycles

Programming Optimized functions in the editor

• Syntax highlighting• Rapid selection of functions and cycles with smartSelect• Scrollbar in the program windowContext-sensitive cutting data calculator

• Calculate spindle speed and feed rate for the specifi c machining process• Load value directly into the open feed rate or spindle speed dialog boxCycle 233 for face milling:

• Selectable machining direction• Spiral face milling is possible• Up to 3 limit walls (e.g. for an open rectangular pocket)• Corner rounding of limit walls• Finishing the limit wallsParallel-axis functions

FUNCTION PARAXMODE• Select machine axes for machining• Machine-independent programming in the coordinate input system (X, Y, Z)FUNCTION PARAXCOMP• Inclusion of movements of parallel axesCylinder surface machining

Programming of cylindrical surfaces independently of machine confi gurationHobbing cycle:

Cycle 880 for the manufacture of cylindrical gears with outside or helical teeth

Setup Calibrating the touch probe

Calibration is now possible with ball or stud contactTouch-probe table

Managing more than one block of touch probe dataManual probing function for aligning a plane

Probe function supports 3-D basic rotationProbe function can be controlled by override knob

Probing velocity can be adapted without loss of accuracyDCM

New high-resolution 3-D format for collision objects

Program run ADP dynamically calculates the contour in advance and can therefore optimize the feed axes. This results, for example, in:• More even velocity profi les• Higher contour speed and shorter machining times• Superior surface qualityLAC can now be controlled by a cycle

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Improved functions

Scope of application Standard function of the iTNC 530 Improved function of the TNC 640

Calibrating the

touch probe

Automatic calibration of the workpiece touch probe with Cycles 2 and 9

Automatic calibration of the workpiece touch probe with Cycles 461 to 463; calibration is now also possible with sphere or stud

Cycle 484: Calibrating wireless tool touch probes Cycle 484: New parameter Q536 provides the selection of whether pre-positioning is manual or automatic

KinematicsComp Model-based volumetric compensation of static errors from linear and rotary axes in the entire working space

Additional, more complex models, including temperature and load dependency as well as the direct application of measured data without model formation is possible

Setup Write protection for tool table and preset table is possible

Write protection for tool table and preset table is possible and can be activated line by line. Password protection is possible

CAD viewer CAD viewer with Option 98 CAD viewer with revised intuitive user interface is available as a standard feature

TOOL CALL Only F is programmable in TOOL CALL F, FZ and FU are programmable in TOOL CALL

Drilling Cycle 241: Single-lip deep-hole drilling Cycle 241: Chip breaking and feed-rate reduction possible for through-drilling

Pocket milling Pocket cycles 251 and 252 Cycles 251 and 252: Monitoring of overlap during helical plunging in pocket cycles

Pocket and slot cycles 252 to 254 Cycles 252 to 254: New parameter Q439 for selection of feed rate interpretation in the radii

Slot milling Cycle 275: Trochoidal milling of slots Cycle 275: Closed contours also permitted

Engraving Cycle 225: Engraving Cycle 225: Engraving with the special characters CE and ß is possible

Working with parallel axes Selection of parallel axis in TOOL CALL or through pre-positioning. No compensating movement or offset possible in the position display

Defi nition of the parallel axis through FUNCTION PARAXMODE, compensating movement or offset in the position display

Interpolation turning Adaptation of the PLC program is required. Not possible with functional safety Cycle 290: Finishing a simple shoulder

No adaptation of the PLC program is required. Also possible with functional safety Cycle 291: Coupling the tool spindle to the position of the linear axesCycle 292: Finishing rotationally symmetrical contours

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Functions of the TNC 640

Differences in function

Scope of application Function of the iTNC 530 Operation in the TNC 640

MDI Execution of connected program sequences is possible

Program information is considered only block by block. Functions such as radius compensation, labels for subprograms and program section repeats are no longer included

Position display Distance-to-go display is possible in the tilted workpiece coordinate system

Distance-to-go display is possible in the input coordinate system

The actual position is shown with respect to the tilted workpiece coordinate system

The actual position is shown with respect to the input coordinate system. All transformations are calculated into the display value

A DL that is programmed in the TOOL CALL is shown compensated in the display

Confi gurable behavior of actual position display for a DL programmed in TOOL CALL (CfgPositionDisplay – progToolCallDL)

Simulation At START the machining time begins with 0 At START the machining time begins is added

Programming FN 16: F-PRINT Small differences in functional details

FN 18: SYSREAD

Pole transfer through CC without entering the plane The TNC issues an error message: additional input is required because otherwise the interpretation can be ambiguous.Incrementally programmed arc with polar

coordinates

smarT.NC smarT.NC: Fillable-form-based programming in working steps

Execution of smart.NC programs is supported

Cycle Editor for point patterns in HP format No editor for point pattern in HP format. Execution of HP fi les is supported.

M function M124 point fi lter Function is confi gurable by machine parameter(CfgStretchFilter)

Soft-key row Display of the SPEC FUNCT soft-key row: Soft-key row is appended

Display of the SPEC FUNCT soft-key row: Soft-key row is not appended (menu has to be exited fi rst to switch the soft-key row)

CYCL DEF and TCH PROBE soft-key rows are not retained after programming a cycle

Behavior is confi gurable(toggleCyclDef)

Binary search Binary search without limit to program length (binary search = jump to same elements in the NC program, starting from the active input element)

Limit to program length for the binary search is adjustable by parameter (maxLineCommandSrch).

Management Pallet datums can be set Pallet datums can be set by entry in the kinematics

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Technologically obsolete functions

Why doesn’t the TNC 640 support

certain functions anymore?

HEIDENHAIN controls are known for their simple and user-friendly programming, and at the same time they ensure considerable downward compatibility. The TNC 640, too, is downward compatible to a high

Functions of the iTNC 530 Remark regarding TNC 640

Cutting data table for automatic calculation of spindle speed and feed rate

Automatic calculation of spindle speed and feed rate is now possible with the new context-sensitive cutting data calculator

SL1 cycles for roughing out pockets Replaced by SL2 cycles (larger performance range and more effective roughing strategy)

Cycle 440: Measuring axis drift using a TT Axis shift can be measured with the TS

Cycle 441: Fast probing Fast probing possible through confi guration of the touch probe in the touch probe table

M90: Smoothing corners/M112: Inserting a rounding arc/M132: Filter order

Replace by Cycle 32 TOLERANCE

M114/M115: Compensation of machine geometry Replaced by TCPM functions M144 and M128

M104: Activate last manually set datum Replaced through Cycle 247 or calling datum table pocket 0

M105/M106: Deactivate/activate a 2nd set of kv factors Implementation through MP subfi les

M134/M135: Precision stop of rotary axes, precision stop reset Implementation through machine tool builder through PLC signal

M142: Delete modal program information Not realized due to lack of demand

M150: Suppress limit switch message Implementation through FN functions

FN25: Set datum manually Manual datum is set in Manual mode

Feed rate in time (FT and FMAXT) Alternative programming capabilities, e.g. dwell time

degree—with certain exceptions, however. Now the TNC 640 has replaced certain functions, some of which were developed more that 35 years ago. Obsolete functions have been superseded by new ones. The

following list shows the functions of the iTNC 530 that the TNC 640 no longer supports.

18

Functions of the TNC 640

Provided functions

Function of the iTNC 530 Function provided for software version:

Remark regarding TNC 640

34059x-07 Later

Test run: Coordinate display with sectional display mode

x

Test run: Depth display for plan view x

Test run: Stop at block number (N) x

Test run: Structure view x

Test run: Dynamic Collision Monitoring x

Outputting text or Q parameters with FN 15: PRINT x F print is alternatively possible with FN 16

Conversion of FK blocks x

Support of KinematicsComp (option 52) by KinematicsOpt

x

Global program settings (Option 44) x At present, the handwheel superimpositioning can be run in a virtual tool axis with M118

Fixture management with dynamic collision monitoring

x The machine tool builder can integrate permanent chucking devices

3-D radius compensation depending on the tool’s contact angle with 3D-ToolComp (Option 92)

x 3-D radius compensation is now possible through normal vectors

Cycle 25: Contour train with residual material machining

x Cycle 25 is now available without residual material machining

Cycle 276: 3-D contour train x Presently only 2-D contour train available

Tool-oriented machining across several workpiece programs

x

Mid-program startup is graphically supported for point patterns

x

Mid-program startup is supported in a subprogram that is started from the main program

x

The TNC saves the point of interruption after cancellation through EMERGENCY STOP or power failure. In mid-program startup, the TNC automatically offers the program block for reentry

x

PL APS02-384 Warszawa, Polandwww.heidenhain.pl

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SE HEIDENHAIN Scandinavia AB12739 Skärholmen, Swedenwww.heidenhain.se

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ZA MAFEMA SALES SERVICES C.C.Midrand 1685, South Africawww.heidenhain.co.za

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HU HEIDENHAIN Kereskedelmi Képviselet1239 Budapest, Hungarywww.heidenhain.hu

ID PT Servitama Era ToolsindoJakarta 13930, IndonesiaE-mail: ptset@group.gts.co.id

IL NEUMO VARGUS MARKETING LTD.Tel Aviv 61570, IsraelE-mail: neumo@neumo-vargus.co.il

IN HEIDENHAIN Optics & ElectronicsIndia Private LimitedChetpet, Chennai 600 031, Indiawww.heidenhain.in

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AR NAKASE SRL.B1653AOX Villa Ballester, Argentinawww.heidenhain.com.ar

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CA HEIDENHAIN CORPORATIONMississauga, OntarioL5T2N2, Canadawww.heidenhain.com

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1110731-22 · 10 · 9/2015 · H · Printed in Germany