HEIDENHAIN PT 880 User Manual

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Operating Instructions

POSITIP 880

English (en) 12/2008

POSITIP 880 Back View

Axis ports

Parallel port Edge finder

Auxiliary

Machine

Interface connector

Ground
	Serial
Power button	port

Main power input

Remote console

Keypad and soft keys

4 axis keys to select between X, Y and Z axes

Clear entry or error messages

Incremental dimensions

Keys for selecting operating mode (for detailed description of these key functions, see Operating Modes in chapter I-2)

Soft keys - Row of keys under the screen of the POSITIP whose functions vary according to associated fields that appear above them on the screen

Numeric input keys

Change negative/positive value key

Confirm entry

Select entry fields

General Notes

Software version

The software version of your unit is shown on the initial power up screen and on the prompt bar after pressing the Help soft key.

This User's Manual covers the functions of the POSITIP 880 for both milling and turning applications. Basic POSITIP 880 functions are covered in the first 4 chapters of this manual. The turning section deals only with the functions specific to turning applications.

About this manual

This manual is divided into two parts:

Part I: Operating Instructions

Part II: Technical Information

Operating Instructions

When using the POSITIP 880 in your work, you need only refer to the Operating Instructions (Part I).

If you're new to POSITIP 880, you can use the operating instructions as a step-by-step workbook. This part begins with a short introduction to the basics of coordinate systems and position feedback, and provides an overview of the available features. Each feature is explained in detail, using an example which you can immediately try out on the machine — so you won't get "lost" in the theory. As a beginner you should work through all the examples presented.

If you're already familiar with POSITIP 880, you can use the Operating Instructions as a comprehensive review and reference guide.

Technical Information

If you are interfacing the POSITIP 880 to a machine or wish to use the data interfaces, refer to the technical information in Part II.

Dialog flowcharts

Dialog flowcharts are used for each example in this manual. They are laid out as follows:

General Notes

POSITIP 880

General Notes

PROMPT

This area explains the key function or work step. If KEY necessary, supplementary information will also be

included.

If there is an arrow at the end of the flowchart, this means that it continues on the next page.

A perforated line indicates an alternative method of carrying out the given function.

A prompt appears with some actions (not always) in the message bar on the screen.

Important Notes in this Manual

Special green note boxes contain especially important information. Please pay special attention to these notes. Neglecting this information can result in e.g. functions not working in the desired way or in causing damage to the workpiece or to the tool.

Symbols within the notes

Every note is marked with a symbol on the left informing about the meaning of the note.

General Information

e.g. on the behavior of the POSITIP 880.

Warning – Refer to accompanying documents

e.g. when a special tool is required for a function.

Caution - Risk of electric shock

e.g. when opening a housing.

General Notes

POSITIP 880

I Operating Instructions .....

I – 1 Fundamentals of Positioning .....				12
Coordinate Systems .....			12
Setting the Datum .....			13
Nominal Position, Actual Position and Distance-To-Go .....								14
Absolute Workpiece Positions				..... 15
Incremental Workpiece Positions .....					15
Position Encoders .....			17
Reference Marks		.....	17
Angle Reference Axis			..... 18
I – 2 Working with POSITIP 880 – First Steps						..... 19
Power Up .....	19
Before You Start .....		19
Operating Modes		.....	21
On-Screen Operating Instructions (HELP Mode) .....							22
Confirming Your Changes .....				22
Messages .....	23
Error messages .....		23
Selecting the Unit of Measure				..... 24
Selecting the Angle Format .....				24
Tool Table .....	24
Calling the Tool Data .....			25
I – 3 Actual Value .....	26
Datum Setting: Approaching Positions and Entering Actual Values .....									26
Probing Functions for Datum Setting					.....	28
Datum Setting with a Tool .....				34
I – 4 Distance-To-Go .....		36
Displaying and Moving to Positions .....						36
I – 5 Milling Patterns .....		43
Circle Pattern .....		43
Linear Pattern	.....	46
Milling a Rectangle Pocket .....				49

POSITIP 880

I – 6 Programming POSITIP 880 .....					53
Program Capabilities				..... 53
Editing and moving through a program						..... 53
Programming Features .....					54
Tool Call .....	56
Datum Call .....		57
Presets .....	58
Hole Patterns and Rectangle Patterns .....						59
Subprograms .....			59
Labels .....	59
Label Number .....			60
Label Call	.....	60
Position Drill .....		62
Milling a Line .....			63
Milling an Arc		.....	64
Blend .....	66
Chamfer .....	68
File Operation Soft Keys .....					70
Loading, saving, deleting & clearing a program .....							70
Directories .....		71
Importing a Program .....				73
Exporting a Program .....				74
Block Function Soft Keys .....					74
I – 7 Executing a Program .....				78
Program views .....			80
Contour View		.....	81
I – 8 INFO Screen .....		83
JOB SETUP Menu .....				83
Tool Table Usage			.....	85
Installation Menu			.....	92
Calculator	.....	92
Language	.....	95
Inch/MM .....	95

I – 9 POSITIP 880 Turning Functions .....					96
Power Up .....	96
Fundamentals of Positioning				..... 97
Job Setup for Turning Applications .....						98
Tool Table Usage .....		99
Tool Offsetting .....		102
NOTE/SET Function .....			103
Datum Setting .....		104
Taper Calculator .....		104
Programming Turning Functions for POSITIP 880 .....							106
Programming Features Soft Keys					.....	106
Multipass .....	107
File Operation Soft Keys			.....	108
Block Function Soft Keys .....				109

POSITIP 880

.....II Technical Information		111
II – 1 Installation and Electrical Connection					.....	112
Items Supplied .....		112
Mounting Location		..... 112
Installation .....	112
Connecting the Encoders .....				114
Connecting an Edge Finder				..... 115
II – 2 Installation Setup .....		116
Initial switch-on .....		116
General field/form navigation guide .....						117
Axes Configuration		..... 117
Encoder Setup .....		118
Error Compensation .....			119
Linear Error Compensation				..... 120
Non-Linear Error Compensation .....					121
Serial Port (X31) .....		123
Parallel Port (X32) .....		123
Protection .....	124
Counter Settings .....		124
Diagnostics .....	125
AMI (Auxiliary Machine Interface)(X51) (Optional)							.....	126
Remote Console (X61) (Optional) .....						127
II – 3 Encoders and Measured Value Display .....						128
Setting the display step with rotary encoders .....							129
II – 4 Data Interface .....	130
II – 5 Measured Value Output .....			135
Examples of character output at the data interface .....								135
II – 6 Specifications for Milling .....				139
II – 7 Specifications for Turning			.....	141
II – 8 Dimensions .....	143
II – 9 Accessories .....	144
Accessory ID Numbers .....				144
POSITIP 880 Mounting Instructions
Universal Mounting Arm
ld. Nr. 382 929-01 .....		145
POSITIP 880 Mounting Instructions
Mounting base
ld. Nr. 382 892-01 .....		146
POSITIP 880 Mounting Instructions
Tilt/Swivel Mount
ld. Nr. 382 891-01 .....		147

Operating Instructions

I – 1 Fundamentals of Positioning

You can skip over this chapter if you are familiar with the concepts of coordinate systems, incremental and absolute dimensions, nominal and actual positions, and distance-to- go.

Coordinate Systems

In order to define positions on a surface, a reference system is required.

For example, positions on the earth's surface can be defined absolutely by their geographic coordinates of longitude and latitude. In contrast to the relative definition of a position that is referenced to a known location, the network of horizontal and vertical lines on the globe constitute an absolute reference system. See Fig. I.1.

Fig. I.1

On a milling machine, workpieces are normally machined according to a workpiece-based Cartesian coordinate system (a rectangular coordinate system named after the French mathematician and philosopher Renatus Cartesius, who lived from 1596 to 1650). The Cartesian coordinate system is based on three coordinate axes designated X, Y and Z which are parallel to the machine guideways.

The figure to the right (Fig. I.2) illustrates the right-hand rule for remembering the three axis directions: the middle finger is pointing in the positive direction of the tool axis from the workpiece toward the tool (the Z axis), the thumb is pointing in the positive X direction, and the index finger in the positive Y direction.

The geographic coordinate system is an absolute reference system

Fig. I.2 Designations and directions of the axes on a milling machine

12	I Operating Instructions

Setting the Datum

The workpiece drawing (Fig. I.3) identifies a certain point on the workpiece (usually a corner) as the absolute datum and perhaps one or more other points as relative datums.

The datum setting procedure establishes these points as the origin of the absolute or relative coordinate systems: The workpiece, which is aligned with the machine axes, is moved to a certain position relative to the tool and the display is set either to zero or to another appropriate value (e.g., to compensate the tool radius).

Example:

Drawing with several relative datums (ISO 129 or DIN 406 Part 11,

Fig. 171)

Fig. I.3 The workpiece datum represents the origin of the Cartesian coordinate system

I – 1 Fundamentals of Positioning

POSITIP 880

I – 1 Fundamentals of Positioning

Example: Coordinates of hole 1:

X =10 mm Y = 5 mm

Z = 0 mm (hole depth: Z = – 5 mm)

The datum of the Cartesian coordinate system is located 10 mm from hole 1 in the X axis and 5 mm from it in the Y axis. See Fig. I.4.

The KT Edge Finder from HEIDENHAIN, together with the POSITIP 880's edge finding functions, facilitates finding and setting datums.

Fig. I.4 Hole 1 defines the coordinatesystem

Nominal Position, Actual Position and Distance-

To-Go

The position that the tool is to move to is called the nominal position while the position of the tool at any given moment is called the actual position. The distance from the nominal position to the actual position is called the distance-to-go. See Fig. I.5.

Sign for distance-to-go

The distance-to go has a positive sign if the axis direction from the actual towards the nominal position is negative.

The distance-to-go has a negative sign if the axis direction from the actual towards the nominal position is positive.

Fig. I.5 Nominal position S, actual position I and distance-to-go R

14	I Operating Instructions

Absolute Workpiece Positions

Each position on the workpiece is uniquely identified by its absolute coordinates. See Fig. I.6.

Example: Absolute coordinates of position 1:

X = 20 mm

Y = 10 mm

Z = 15 mm

If you are drilling or milling a workpiece according to a workpiece drawing with absolute coordinates, you are moving the tool to the value of the coordinates.

Fig. I.6 Position 1 definition through absolute coordinates

Incremental Workpiece Positions

A position can also be referenced to the preceding nominal position. In this case the relative datum is always the last nominal position. Such coordinates are referred to as incremental coordinates (increment = increase). They are also called incremental or chain dimensions (since the positions are defined as a chain of dimensions). Incremental coordinates are designated with the prefix I.

Example: Incremental coordinates of position 3 referenced to position 2. See Fig. I.7

Absolute coordinates of position 2:

X = 10 mm

Y = 5 mm

Z = 20 mm

Incremental coordinates of position 3:

IX = 10 mm

IY = 10 mm

IZ = –15 mm

If you are drilling or milling a workpiece according to a drawing with incremental coordinates, you are moving the tool by the value of the coordinates.

Fig. I.7 Positions 2 and 3 through incremental coordinates

I – 1 Fundamentals of Positioning

POSITIP 880

I – 1 Fundamentals of Positioning

A coordinate list corresponding to this example is useful when working in the operating mode: PROGRAMMING. See Fig. I.8

Fig. I.8 Workpiece drawing with coordinate

					dimensioning (ISO 129 or DIN 406 Part 11,
					Fig. 179)
		Dimensions in mm
Coordinateorigin		Dimensions in mm

		Coordinates
	Pos.	X1 X2	Y1 Y2	r		f	d
	Pos.	X1 X2	Y1 Y2	r		f	d

1	1	0	0				-

1	1.1	325	320				ø 120 H7

1	1.2	900	320				ø 120 H7

1	1.3	950	750				ø 200 H7

1	2	450	750				ø 200 H7

1	3	700	1225				ø 400 H8

2	2.1	-300	150				ø 50 H11

2	2.2	-300	0				ø 50 H11

2	2.3	-300	-150				ø 50 H11

3	3.1			250		0°	ø 26

3	3.2			250		30°	ø 26

3	3.3			250		60°	ø 26

3	3.4			250		90°	ø 26

3	3.5			250		120°	ø 26

3	3.6			250		150°	ø 26

3	3.7			250		180°	ø 26

3	3.8			250		210°	ø 26

3	3.9			250		240°	ø 26

3	3.10			250		270°	ø 26

3	3.11			250		300°	ø 26

3	3.12			250		330°	ø 26

16	I Operating Instructions

Position Encoders

The position feedback encoders convert the movement of the machine axes into electrical signals. The POSITIP 880 constantly evaluates these signals and calculates the actual positions of the machine axes, which it displays as a numerical value on the screen. See Fig. I.9.

If there is an interruption in power, the calculated position will no longer correspond to the actual position. When power is restored, you can re-establish this relationship with the aid of the reference marks on the position encoders and the POSITIP 880's reference mark evaluation feature (REF).

Fig. I.9 Linear position encoder, here for the X axis

Reference Marks

The scales of the position encoders contain one or more reference marks. When reference marks are crossed they can be used to define an absolute position in an incremental system. If power is interrupted this absolute position is lost and the relationship between the reference mark and scale position is lost. The reference marks on the position encoders and the POSITIP 880's reference mark evaluation feature allows the unit to quickly re-establish this relationship again when power is restored. See Fig. I.10.

When a reference mark is crossed over, it generates a signal which identifies that position as the reference point. The POSITIP 880 uses this reference point to restore the relationship between the scale position and the display value which was last defined by setting the datum.

If the position encoders feature distance-coded reference marks, there are reference marks uniquely spaced along the length of the scale. Crossing any two reference marks will restore the datum. Each axis need only move a limited distance for linear encoders, and angle

for rotary encoders. Fig. I.10 Linear scales: with distance-coded reference marks (upper illustration) and one

reference mark (lower illustration)

The datum setting cannot be restored from one power cycle to the next if the reference marks were not crossed before the datum was set.

I – 1 Fundamentals of Positioning

POSITIP 880

I – 1 Fundamentals of Positioning

Angle Reference Axis

For angular positions, the following reference axes are defined:

Plane	Angle reference axis
XY	+X

YZ	+Y

ZX	+Z

Positive direction of rotation is counterclockwise if the working plane
is viewed in negative tool axis direction. See Fig. I.11.
Example: Angle in the working plane X / Y

Angle	Corresponds to the...
+ 45°	... bisecting line between +X and +Y

+/– 180°	... negative X axis	Fig. I.11 Angle and the angle reference axis, e.g. in
		Fig. I.11 Angle and the angle reference axis, e.g. in
- 270°	... positive Y axis	the X / Y plane
- 270°	... positive Y axis

18	I Operating Instructions

I – 2 Working with POSITIP 880 –

First Steps

Power Up

Switch on the power (located on the back). It will take approximately 25 - 30 seconds for system to start after power up. The initial screen will appear (This screen will only appear the first time you power up). Select the language by pressing the LANGUAGE soft key.

At this point you have the choice of MILL or TURN. Select the MILL soft key to proceed with milling functions the first time you power up. See Table of Contents for turning functions section. See Fig. I.12.

You can change the application later in

INSTALLATION SETUP under COUNTER SETTINGS.

Your POSITIP 880 is now ready for operation and is in the operating	Fig. I.12 Initial screen
mode ACTUAL VALUE. Axis will show “NO REF”.

Before You Start

The POSITIP 880's reference mark evaluation feature automatically reestablishes the relationship between axis slide positions and display values that you last defined by setting the datum.

If the axis encoder has reference marks, the NO REF indicator will flash. See Fig. I.13. After crossing over the reference marks, the indicator will stop flashing and change to REF.

Working without reference mark evaluation

You can also use the POSITIP 880 without crossing over the reference marks. Press the NO REF soft key to exit the reference mark evaluation routine and continue in ACTUAL VALUE mode. The NO REF indicator will indicate that reference marks were not crossed over for that axis.

You can still cross over reference marks at a later time. The ENABLE REF soft key will be available from ACTUAL VALUE mode. Press this soft key to activate the reference mark evaluation routine.

Fig. I.13 Display before choosing NO REF

I – 2 Working with POSITIP 880 – First Steps

POSITIP 880

I – 2 Working with POSITIP 880 – First Steps

ENABLE REF function

The purpose of the ENABLE REF function, is to give the operator the opportunity to either ignore the reference marks as they are crossed over by disabling it, or finding reference marks when necessary by enabling it. When the ENABLE REF soft key is pressed, the POSITIP 880 is ready to identify a reference mark. When the ENABLE REF soft key is not depressed, POSITIP 880 will ignore all reference marks. When all reference marks have been found, the ENABLE REF soft key will disappear.

If an encoder is setup without reference marks, then the REF indicator will not be displayed.

Once reference marks for all desired axes are established, press NO REF soft key to cancel out of routine. You do not have to cross over the reference marks of all the encoders, only those that you need.

If you do not cross over the reference marks, POSITIP 880 does not store the datum points. This means that it is not possible to re-establish the relationship between axis slide positions and display values after a power interruption (switch-off).

Turn on power and press any key.

Cross over the reference marks (in any order).

Do not cross over the reference marks. Note: In this case the relationship between axis slide position and display value will be lost after a power interruption.

Press the NO REF soft key.

20	I Operating Instructions

Operating Modes

Selecting the operating mode determines which functions are available to you.

Available functions	Mode	Key
Position display for workpiece	ACTUAL VALUE
machining; Zero reset; Datum
setting – also with edge finder probe

Distance-to-go display; hole	DISTANCE-TO-GO
patterns; milling and drilling with tool
radius compensation

Storage of work steps for small-lot	PROGRAMMING
production

Run programs previously created in	EXECUTE PROGRAM
the PROGRAMMING mode

You can switch to another operating mode at any time by pressing the key for the desired mode.

In the following examples requiring tool usage, refer to chapter I-8 under Job Setup.

I – 2 Working with POSITIP 880 – First Steps

POSITIP 880

I – 2 Working with POSITIP 880 – First Steps

On-Screen Operating Instructions (HELP Mode)

The integrated operating instructions provide information and assistance in any situation. See Fig. I.14 & Fig. I.15.

To call the operating instructions:

8Press the INFO soft key.

8Press the HELP soft key.

8Information relevant to the current operation will be displayed.

8Use the paging soft keys if the explanation is spread over more than one screen page.

To view information on another topic:

8Press the LIST OF TOPICS soft key.

8Press the paging soft keys to scroll through the index.

8Press the VIEW TOPIC soft key to select the item you need.

To leave the operating instructions:

Fig. I.14 Index under HELP mode

8 Press the EXIT HELP soft key.

Example: On-screen operating instructions for datum setting with the edge finder (CENTER LINE)

The CENTER LINE function is described in this manual on page 20.

8From the ACTUAL VALUE mode, press the PROBE soft key.

8Press the INFO soft key.

8Press the HELP soft key.

8To leave the operating instructions: Press the EXIT HELP soft key. The screen returns to the screen with the SET DATUM form and DRO display.

Fig. I.15 On-screen operating instructions for datum setting

Confirming Your Changes

You must confirm your changes by pressing the ENT key for them to become effective. The instruction sections of this manual will occasionally give the command “Confirm your changes.” This means press the ENT key.

22	I Operating Instructions

Messages

The Message bar messages will change color depending on the type of information it is conveying: Normal messages will appear as gray boxes with black text. Instructional messages will appear as blue boxes with white text. Error messages will appear as red boxes with white text.

Error messages

If an error occurs while you are working with POSITIP 880, the Message bar will turn red and provide an explanation of what caused the error.

To clear the error message:

8 Press the CE (Clear Entry) key.

Critical error messages

Critical error messages mean that the operational reliability of the POSITIP 880 has been impaired.

If a critical error occurs, a message box will appear in the middle of the screen:

8Take note of the error message displayed on the screen.

8Switch off the power to the POSITIP 880.

8Attempt to correct the problem with the power off.

8If the critical error message recurs, notify your customer service agency.

I – 2 Working with POSITIP 880 – First Steps

POSITIP 880

I – 2 Working with POSITIP 880 – First Steps

Selecting the Unit of Measure

Positions can be displayed and entered in millimeters or inches. If you choose inches, INCH will be displayed on the status bar at the top of the screen. See Fig. I.16.

To change the unit of measure:

8Press the INFO soft key.

8Press the INCH/MM soft key.

8The unit of measure can also be set in JOB SETUP. Refer to Job Setup, chapter I-8.

Fig. I.16 The MM indicator

Selecting the Angle Format

Angles – such as for a rotary table – can be displayed and entered either as decimal degrees, degrees/minutes/seconds (DMS) or radian values. Refer to Job Setup, chapter I-8 for instructions on setting angle format.

Tool Table

The POSITIP 880’s tool table provides a convenient way to store diameter and length offset information for each of the tools you commonly use. You can enter up to 99 tools.

Before you start workpiece machining, select the tool you are using from the tool table. POSITIP 880 will then take into account the entered diameter and length of the tool.

The tool length is the difference in length L between the tool and the reference tool. The reference tool is indicated by T1 in Fig. I.17.

Sign for the length difference L

If the tool is longer than the reference tool: L > 0 (+)

If the tool is shorter than the reference tool: L < 0 (–)

Refer to Job Setup for entering a tool into the tool table.

Fig. I.17 Tool length and diameter

24	I Operating Instructions

Calling the Tool Data

The lengths and diameters of your tools must first be entered into the POSITIP 880's tool table.

Before you start machining, select the tool you are using from the tool table. POSITIP 880 then takes into account the stored tool data when you work with tool compensation (e.g., with hole patterns).

You can also call the tool data with the command TOOL CALL in a program.

Tool call

Press the INFO soft key.

Then the JOB SETUP soft key. (Tool table is highlighted).

Press ENT.

TOOL NUMBER

Cursor to the tool you want or enter the tool number directly.

Press USE, then USE NEW SETTINGS.

View status bar to verify the proper tool has been called.

I – 2 Working with POSITIP 880 – First Steps

POSITIP 880

I – 3 Actual Value

Datum Setting: Approaching Positions and

Entering Actual Values

The easiest way to set datum points is to use the POSITIP 880's probing functions – regardless of whether you probe the workpiece with the HEIDENHAIN KT Edge Finder or with a tool. Description of the probing functions: See "Probing Functions for Datum Setting" on page 28

Of course, you can also set datum points in the conventional manner by touching the edges of the workpiece one after the other with the tool and entering the tool positions as datum points (see examples following this page).

The datum table can hold up to 99 datum points. In most cases this will free you from having to calculate the axis travel when working with complicated workpiece drawings containing several datums.

Datum settings are performed in the ACTUAL VALUE operating mode and define the relationships between the axis positions and the display values. If necessary, the datum table’s values may be changed by entering a value directly.

See Job Setup for setting the datum value directly.

Datum selection (Mill only)

In ACTUAL VALUE mode, the Up/Down arrow keys may be used to select the next or previous datum number.

Tool selection (Turn only)

In ACTUAL VALUE mode, the Up/Down arrow keys may be used to select the next or previous tool number.

26	I Operating Instructions

Example: Setting a workpiece datum without the probing function. See Fig. I.18 & Fig. I.19.

Working plane: XY Tool axis: Z

Tool diameter: D = 3 mm

Axis sequence in this example: X - Y - Z

Preparation: Calling the tool data

Select the tool data for the tool which you are using to touch the workpiece.

Preparation: Select the datum

Operating mode: ACTUAL VALUE

From ACTUAL VALUE mode, press the DATUM soft key.

Cursor will be in the DATUM NUMBER field.

Enter the datum number and press ENT.

Touch the workpiece at edge 1.

Select the X axis key.

DATUM SETTING X

Enter the position of the tool center (X = – 1.5 mm) and

transfer the X-coordinate of the datum and press ENT.

Touch the workpiece at edge 2.

Select the Y axis key.

Fig. I.18 SET DATUM form

Fig. I.19

I – 3 Actual Value

POSITIP 880

I – 3 Actual Value

DATUM SETTING Y

Enter the position of the tool center (Y = – 1.5 mm) and

transfer the Y-coordinate of the datum and press ENT.

Touch the workpiece surface.

Select the Z axis key.

DATUM SETTING Z = + 0

Enter the position of the tool tip (Z = 0 mm) and transfer the Z-coordinate of the datum. Press USE.

Probing Functions for Datum Setting

It is particularly easy with a HEIDENHAIN KT 130 Edge Finder (Fig.

I.20).

During probe functions, the display freezes with the location of the edge, centerline, or circle center.

The following probing soft key functions are available:

Workpiece edge as datum: EDGE

Centerline between two workpiece edges: CENTER LINE

Center of a hole or cylinder: CIRCLE CENTER

With Circle Center, the hole must be in a main plane. The three main planes are formed by the axes X / Y, Y / Z and Z / X.

The POSITIP 880's probing functions enable you to set datum points with a HEIDENHAIN KT Edge Finder. The probing functions are also available when you are using a tool instead of an edge finder.

Fig. I.20 The HEIDENHAIN KT 130 Edge Finder

28	I Operating Instructions

Datum setting with the edge finder

Preparation: Enter the stylus diameter and select the datum

8Press the INFO soft key.

8Press JOB SETUP, then cursor to EDGE FINDER and press ENT.

8Enter the diameter of the edge finder stylus and confirm with ENT.

8Enter the desired length and confirm with ENT.

8Enter the desired unit of measurement (inch/mm).

8Press USE, then USE NEW SETTINGS.

In all probing functions, POSITIP 880 takes into account the entered stylus diameter.

To abort the probing function

While the probing function is active, POSITIP 880 displays the CANCEL soft key. Choose this soft key to return to the opening state of the selected probing function.

I – 3 Actual Value

POSITIP 880

I – 3 Actual Value

Example: Probe workpiece edges, and set the corner as a datum.

See Fig. I.21 & Fig. I.22.

Datum axis:	X = 0 mm
	Y = 0 mm

The coordinates of the datum can be set by probing edges or surfaces and capturing them as datums as described on the next page.

Operating mode: ACTUAL VALUE

Press the PROBE soft key.

Cursor to axis.

Press EDGE soft key.

Fig. I.21 Form for setting datum using an edge

PROBE IN X AXIS

Move the edge finder toward the workpiece until the

LEDs on the edge finder light up.

Retract the edge finder from the workpiece.

ENTER VALUE FOR X + 0

0 is offered as a default value for the coordinate. Enter the desired coordinate for the workpiece edge, for example X = 0 mm and

set the coordinate as a datum for this workpiece

edge. Press ENT.

Fig. I.22

Press EDGE soft key.

PROBE IN Y AXIS

Move the edge finder toward the workpiece until the

LEDs on the edge finder light up.

Retract the edge finder from the workpiece.

30	I Operating Instructions

+ 121 hidden pages