Renishaw TRS1 Instrucciones de funcionamiento
Programming guide
H-2000-6403-00-A
TRS1 non-contact broken tool
detection system - Brother controls
© 2005 Renishaw plc. All rights reserved.
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Renishaw part no: H-2000-6403-00-A
Issued: December 2005
Contents 1
Publication No. H-2000-6403
Contents
TRS1 non-contact broken tool detection system ................................................................ 2
Machine spindle speed checking .................................................................................... 2
Software memory requirements ...................................................................................... 2
Machine tool controllers supported.................................................................................. 2
Measurement values used in this guide.......................................................................... 2
Installing the software...................................................................................................... 3
Setting data in macro (O1000) ........................................................................................ 3
Broken tool detection – (macro O1000).............................................................................. 4
Error messages and alarms................................................................................................ 8
2Broken tool detection
Publication No. H-2000-6403
TRS1 non-contact broken tool detection system
This guide describes how to use the TRS1 non-contact broken tool detection system
software. The TRS1 is a laser non-contact system that provides high-speed/high accuracy
broken tool detection for solid tools only. As tools are moved into the laser beam, the
system detects reflection. Output signals are sent to the controller and the presence of the
tool can be established. The TRS1 system allows the following parameters to be
established:
zDetection of a broken tool.
NOTE: Solid tools – this means a tool where the cutting teeth do not protrude below the
centre point of the tool. Tools such as drills, taps, etc. are considered suitable tools.
Machine spindle speed checking
All broken tool detection takes place at a fixed spindle speed of 1000 rpm.
The active spindle speed is stored at the beginning of the broken tool macro. The broken tool
checking then takes place at 1000 rpm before restoring the spindle speed back to its original
rpm.
Software memory requirements
zO1000 (broken tool check) 0.96 kb (2.4 metres) of memory.
Machine tool controllers supported
TRS1 system software is suitable for use on the following machine tool controllers.
(Brother controls fitted with macro B options).
Measurement values used in this guide
Throughout this guide, metric units of measurement, i.e. millimetres, are used in the
examples. The equivalent imperial measurements, i.e. inches, are shown in brackets.
Broken tool detection 3
Publication No. H-2000-6403
Installing the software
Before installing the TRS1 software, read the guidelines contained in the readme file on
the CD.
Setting data in macro (O1000)
Read the following variable descriptions then edit macro O1000 as described.
#14 = ‘X’ axis laser beam position. This defines the position at which broken tool
checking will take place in the X axis. (Machine positional values are
required).
Default: 0
NOTE: If the installation requires no X move to position the tool in the beam, then #14
requires no adjustment.
#15 = ‘Y’ axis laser beam position. This defines the position at which broken tool
checking will take place in the Y axis. (Machine positional values are
required).
Default: 0
NOTE: If the installation requires no Y move to position the tool in the beam, then #15
requires no adjustment.
#16 = ‘Z’ axis laser beam position. This defines the position at which broken tool
checking will take place in the Z axis. (Machine positional values are
required).
Default: 0
#17 = 2. Tool offset type (1=A, 2=B, C).
Default: 2
#30 = 31 Skip command (other commands G132 on the AOO series control)
Default: 31
4Broken tool detection
Publication No. H-2000-6403
Broken tool detection – (macro O1000)
NOTE: The TRS1 can perform a broken tool detection cycle only on solid tools, where the
cutting teeth do not protrude below the centre point of the tool. Tools such as drills and taps
are considered suitable tools.
Macro O1000 is used to check for breakage of solid cutting tools. The broken tool cycle uses
a plunge check, where the tool is moved into and out of the laser beam in the spindle axis.
Typically, a tool needs to be checked after a machining operation, to verify that it is not
broken, before the next tool is selected.
Description
Detection of a broken tool occurs while the tool is rotated in the beam. Moves into and out of
the beam are at the rapid feedrate.
Broken tool detection 5
Publication No. H-2000-6403
The tool first moves in rapid traverse to the checking position in the spindle axis using the
active tool length offset. The tool will then move at rapid traverse to the radial checking
position if this is required.
NOTE: The checking position must be on a perpendicular section of the tool, the flank angle
of a drill not being a suitable checking position.
The NC system then checks for the condition of the tool. The system looks for a signal within
a 30 second time-frame and if after 30 seconds no signal is received then a broken tool alarm
is raised.
The 30 second time-frame is attained by moving the spindle axis .50 mm @ F1. This can be
adjusted by the installer.
If the ‘Z’ macro input is used the tool retracts out of the beam to the position requested.
NOTE: If the ‘Z’ input is omitted the tool will retract to the spindle axis reference position.
Format
G65 P1000 [Hh Mm Zz Ss Ii Jj]
where [ ] denotes optional inputs
Example G65 P1000 H1.5 M1. Z10. S1000 I.1 J-.25
Subroutine inputs
The following inputs are used with this subroutine:
H Tolerance value that defines when the tool is out of tolerance.
NOTE: If the H input is used with a minus value assigned then the tool
check position will be the tool length plus the tolerance value.
Default value: 3.0 mm (0.0197 in).
M1. Tool broken flag.
Using this flag prevents a BROKEN TOOL alarm from being raised.
Z Safety plane.
The distance (in the spindle axis) to which the tool is retracted.
Default value: Spindle axis Reference position
6Broken tool detection
Publication No. H-2000-6403
S Spindle speed
Spindle speed at which checking for a broken tool takes place.
Default value: 1000
I Incremental adjustment distance (X axis).
This input allows the reflection point on the tool to be individually adjusted
to attain maximum feedback.
NOTE: Only valid if a X move is used to position the tool to its checking
position.
Default value: 0
J Incremental adjustment distance (Y axis).
This input allows the reflection point on the tool to be individually adjusted
to attain maximum feedback.
NOTE: Only valid if a Y move is used to position the tool to its checking
position.
Default value: 0
Outputs
The following output is always set when this cycle is executed:
#148 Broken tool flag.
(1 = broken tool, 0 = good tool)
NOTE: If #148 cannot be used, edit lines 10 and 60 in the macro program for a suitable
replacement.
Broken tool detection 7
Publication No. H-2000-6403
Alarms
The following alarms may be generated when this cycle is executed.
BROKEN TOOL
NO H OFFSET ACTIVE
FORMAT ERROR
For an explanation of the meaning of alarms, see “Error messages and alarms” on
page 8.
Example: Broken tool detection
O????
T1M6
G0G43H1Z200.
(complete the machining sequence with tool T1)
G65P1000H5.Z25. Make a broken tool check. Either a BROKEN TOOL alarm is
raised and the program stops, or the program continues.
T2M6 Select the next tool and continue.
(continue machining)
If the broken tool flag method is used, the cycle call is modified as follows:
G65P1000H2.M1.Z25. Make a broken tool check without raising an alarm.
The #148 flag is set.
IF [#148EQ1]GOTO100
(continue program)
Block N100 will contain corrective actions. For example, selecting a sister tool for use or
selecting a new pallet/component.
8Error messages and alarms
Publication No. H-2000-6403
Error messages and alarms
When an error state is detected, an error message is displayed on the screen of the
controller. Error messages, their meaning, and typical actions needed to clear them are
described below.
Message BROKEN TOOL
Meaning The tool is out of tolerance.
Action Replace the defective tool and establish the correct tool offset value.
Message NO H OFFSET ACTIVE
Meaning There is no active tool offset.
Action Correct the part program and run the program again.
Message FORMAT ERROR
Meaning A macro input is either missing or the value entered is incorrect.
Action Correct the macro input line then run again.
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