Leica AT960 Measuring With Laser Trackers User Manual

: June 6, 2024
: Leica

Table of Contents

Prerequisites
Compensation
Starting the Interface
SPATIALANALYZER USER MANUAL
SPATIALANALYZER USER MANUAL
CHAPTER 3 • MEASURING WITH LASER TRACKERS
SPATIALANALYZER USER MANUAL
Read User Manual Online (PDF format)
Download This Manual (PDF format)

SPATIALANALYZER USER MANUAL

Leica AT9x0

Leica AT960 Measuring With Laser Trackers

Prerequisites

All Leica trackers are shipped with 192.168.0.1 as the IP address as default. The Leica AT960/930 also offers a wireless connection option.
The current version of Tracker Pilot can be downloaded directly from the Laser Tracker Controller. To do so, open a web browser and type http://192.168.0.1 in the search bar. This will open a link to the tools saved on the tracker controller. To learn more about configuring IP addresses, see the IP Address Basics section.

Compensation

The AT960/930 trackers and accessories can be compensated within Tracker Pilot (if you need the current Tracker Pilot you can browse directly to http://192.168.0.1 (or the trackers IP) and download Tracker Pilot from the controller).

Compensation Password: Expert (Full and Intermediate, ADM, Refl ector Definition, Camera Compensation, etc.)
Server Settings Password: Administrator (TCP/IP address, Time/ Date, etc.)

Starting the Interface

1. Select Instrument > Add and choose the respective Leica Tracker from the Add Instrument to SA dialog.

CHAPTER 3 ■ MEASURING WITH LASER TRACKERS

Figure 3-96. Adding a Leica AT960/930 tracker.

2. Now run the instrument interface module under Instrument > Run Interface Module and choose Laser Trackers.
3. Enter the tracker’s IP address and use the Ping button to test the connection if needed. Once satisfied, press OK. The next time the interface is started, you can simply click the Run Interface and Connect icon. This will use the last saved settings and automatically connect the instrument. The AT960/930 also offers an IP discover utility.

Figure 3-97. The Leica Tracker connection window.

4. The interface is now connected and ready for use. Please refer to the Laser Tracker section for details on the laser tracker interface (”Laser Tracker Interface” on page 10).

Tracker Settings

To access the custom settings, use Settings > Tracker > General Settings or press the button. Then press the tracker-specific button at the bottom.

SPATIALANALYZER USER MANUAL

6D Shank Measurements

With a calibrated shank tip attached to a T-probe (calibration is performed within Tracker Pilot), shank measurements can be taken for sheet metal applications, providing an edge measurement solution. Shank Points is a new Operation that can be used with any measurement acquisition mode(discrete, stable, or scan). But two new measurement profit less have been added to support this application(Figure 3-98):

Discrete Shank Point. This mode is the standard measurement of a point on an edge.
Discrete Bottom Shank Point. This operation provides the same shank measurement option with the addition of a specific ed shift relative to the reference plane, designed to account for material thickness.

Figure 3-98. Shank Measurement Profile Operations

Shank Plane – measurements require a projection plane to be defi ned and use this plane definition to define the intersection point of the shank axis and the plane. The tilt of the probe relative to the plane is used to determine the point’s offset in combination with the probe diameter.
This means that the cleanest offset is obtained by holding the probe perpendicular to the edge. Tilting the probe is fine but leaning it such that it trails along the edge (into or out of the paper in (Figure 3-99) should be avoided and could cause an overestimate of the offset.
Override Radius- the radius of the shank probe should be set as part of the calibration process but its default value can be changed within the measurement profile if needed, using this control.

Shank Measurements in SpatialAnalyzer – https://youtu.be/hXnoj4ov1GA

CHAPTER 3 ■ MEASURING WITH LASER TRACKERS

Figure 3-99. Proper orientation of the probe for accurate shank measurements

Leica AT960 Measuring With Laser Trackers - sembly 1

Proximity Measurements with a Shank Probe

Shank measurements can also be used with proximity triggers. This makes edge measurements easy to perform by allowing you to trigger points along an edge as you slide a hank probe along it.

To do so perform the following steps:
1. Build a vector group to be used for the proximity trigger process. Each vector in this vector group will be used as a trigger such that as the probe’s axis crosses the vector a point will be triggered for you.

2. Navigate to Instrument >Automatic Measurement>Auto-Correspond with Proximity Triggers>Vectors. Specify a tolerance zone to consider and a resulting group name and begin the operation.

Double-check that the option to measure each point more than once within the proximity dialog is Enabled. If you don’t, it will simply take the fi rst point that is within the proximity tolerance…on the approach and will not find the closest point to the vector intersection.
3. Slide the shank probe along the edge of the part to trigger measurements at each of the reference vector locations.
The point that is recorded is the closest point on the shank to the vector origin. It’s important, therefore o have a good alignment. If the measure feature deviations significantly from the nominal the compensation can be affected.

External Trigger Configuration

The external trigger settings are defined within a “Custom Triggers” measurement profile. These settings are shown conceptually in Figure 3-100 and as they appear in the measurement profile settings dia- log in Figure 3-100.

SPATIALANALYZER USER MANUAL

Figure 3-100. External Trigger Configuration

Figure 3-101. Custom Profile used to Enable External Triggering

Measurement Profile Settings
External Trigger measurements can be performed using either of two basic methods:
1. Set the Clock Source to “Internal” and use the external trigger to control the start and stop of a scan at a given rate.
2. Set the Clock Source to “External” and trigger measurements exclusively with the external trigger.
Clock Source:

Internal (Internal Clock with External Start/Stop Signal).

CHAPTER 3 • MEASURING WITH LASER TRACKERS

Measurements will be triggered by the external start/stop signal on the trigger board. However, the measurement rate will be taken based on internal settings and is not synchronized to an external signal.

External (External Clock with Start/Stop Signal). The measurement will be controlled by a start/stop signal on the trigger board. One transition of the clock signal (positive or negative depending on the configuration) triggers a measurement of whether the tart/Stop signal is active.
Start / Stop Active Level
Low/High. The start/stop signal can be set either low or high active (for example, low active means that events are being generated as long as the start/stop signal remains low).

Start / Stop Source

Ignored/Active. This setting controls the subsequent response to the external trigger after a measurement operation has started. If ignored, the measurement will continue regardless of other triggers until the profile is stopped, while if active, the following trigger changes will start/stop the measurement.

Clock Transmission

Negative/Positive. This defines the change in clock signal used for the trigger (negative transition or positive transition).
Minimal Time Delay
Delay Value. This defines the maximum rate at which measurements can be taken (minimal delay between two consecutive measurements). Additional trigger signals sent faster than this reset delay will be ignored.

Running the Tracker Interface Separately
One of the unique features of SA’s architecture is that the instrument interface can be run separately from SA. This provides a means to run multiple trackers independently on different machines while connecting to a single SA for data storage. Doing so also provides the ability to separate the persistence fi less for individual trackers, as the persistence file will be saved in the directory where the tracker interface is launched, as opposed to the C:\Analyzer Data\Persistence folder.
In order to run the SA Laser Tracker process separately, some additional support fi less is required. These include the following fi less (Figure 3-102):