Motion Edit Tool

The motion edit tool provides direct access to the motion associated with any feature. With this tool, you can adjust all motion points through appending or inserting new points or updating existing points.

There are 5 types of motion points available in Geomet:

• IP Interim or clearance points
• SO Stand off points before and after a measurement point
• Auto-IP Interim points that are calculated at runtime and utilize Clearance Coordinate Systems
• MP Measurement points
• ATT Motion attributes, speed, stand off and over travel distances

figure 1, Motion Edit Dialog

figure 2, Activating

To start the motion edit tool, highlight a feature in the inspection report and right click to activate the sub menu. From the sub menu, choose [Launch the Edit Motion tool], see figure 2.

From the main drop down menu choose [Modify→Edit Motion Points] and you will be prompted to enter the feature number to edit.

This feature will adjust all SO-MP-SO relationships. When you build the motion map the first time, the current stand off distance established in DCC Settings will be used to calculate the distance between the SO and MP and back-off SO. Using this feature allows you to update all SO-MP-SO triplets with a new value.

For example, if you taught the motion path with a standoff of 0.200", you can change that distance to 0.100" with this feature. There exists one rule when using this tool, the MP must be bracketed by a leading SO and followed by a SO.

On Geomet self-taught and older versions of Feature Generators, the SO and MP positions are stored as stylus center point. Newer generations now use surface MPs when created with Feature Generators. The SO positions remain stylus center. To accomodate a proper calcultaion for SO, an optional "Add Probe Radius Clearance" check is provided. Using this will ensure that the distance from the stylus to the surface remains as the full SO distance.

Through the use of this feature you can insert changes in both traverse and measurement speeds as well as over travel distance. These changes are implemented where they exist in the motion path until another attribute is encountered.

For example if you have a motion critical area on your inspection piece that requires the CMM to capture the MP at a more controlled slower rate, Highlight the SO before the MP and use the <Attribute> command. Enter the new lower speeds for Traverse and Probing and press <Ok>. A new motion record will be inserted before the highlighted SO and has the Type ID “ATT”.

NOTE: Changes to Attributes remain active until another Attribute has been encountered. You may elect to insert another Attribute when finishing your critical MP to return to normal speeds.

 

The Run Feature function will execute the motion path from the point of highlight. For example, if step number 1 is highlighted, Geomet will prompt you move to a safe location with a targeting box. When you press continue, Geomet will run all motion, including MPs through the end of the motion map. If your highlight was on step 5, the motion will start with that step.

 

The Single Step function will execute motion for just that one highlighted step. The motion will occur for all IP, SO and Auto-IP records and will not execute MPs. If the motion record has a XYZ location beyond the in position limit, then the Target DRO (see Run Feature) will appear and the operator then has the choice to manually move to the target position, use move to the location under DCC control. This added step is used to prevent potential CMM crashes if the requested location is at a distance from the current probe location.

When you highlight the leading SO, motion will take place to the XYZ location of the SO. Pressing single step again will skip through the MP and move to the trailing SO for that MP. The single step feature is the tool used most to correct any motion path concerns.

In the Re-Teach function, you can highlight a location in the motion map, press <Re-Teach> and from that point down teach a new motion path creating new IPs, and MPs. This function is most useful when your part program has changed and you require major changes to the motion path for the selected feature.

Start ReTeach	End Position

When starting the re-teach process, Geomet will display the targeting dialog that shows the last location in the motion map. This becomes you start position in your re-teach process. Manually move to this location and press <Continue>. From this point, you would create your new motion. A new target dialog will replace the start target dialog and this new target is the next known location in your motion map. This target will assist you in developing the new motion map. As you re-teach your finish should be near this end location for smooth transition between motion maps.

The <Update > command is used to revise selected entries in your Motion Edit Tool. To edit an XYZ location of an IP/SO or MP, first highlight that point in the motion map list. Its XYZ values will transfer into the edit control, see example.

Edit the XYZ location values and commit the change by pressing <Update>. During the update process you can change the Point Type designation by changing it from a IP to a SO, or any Point Type.

NOTE: Remember to press <Update> before selecting another motion map record!

Tip: Not only can you Update existing features, but you may want to insert a new motion map record using this process. To do this, highlight the selected record and make any changes as needed to the XYZ location, then press <Insert> and a new record will be placed before the highlighted record.

As it sounds, the Append feature attaches a new motion map entry based on the values in the XYZ edit controls to the bottom of the motion map. The type of point, IP, SO, etc, will be assigned based on the current selection under Point Type.

This feature will insert an entry in the motion map, just above the current highlighted entry. The new record will reflect the current values in the XYZ edit controls and Point Type.

This feature deletes the current highlighted entry in the motion map.

To move your entire motion map a specified distance, enter a relative distance in the XYZ edit controls. For example if you need to move the motion map 0.025” in the X-Axis to compensate for a part change, enter X=0.025, Y = 0.0, Z = 0.and press the <Relative Adj.> button. Your entire motion map will be offset by 0.05, 0.0, 0.0.

NOTE: In some cases the leading IPs should not be adjusted. The motion path that leads from the previous feature, to the start of the current feature should be reviewed carefully to ensure a relative adjustment does not cause unexpected motion.

Geomet offers a single tool, One-Step Motion Edit, that allows a relative motion adjustment to the entire motion map while protecting the leading IPs.

This feature will drop the highlight in the motion map and clear all values in the XYZ edit controls.

This feature takes the current highlighted motion map entry and places a copy in a buffer. Once the record is in the buffer you can Append, Insert or Update based on the following table:

Copy Functions
Append	Pressing the <Append> button will attach a new motion record at the end of the current motion map based on the copied record.
Insert	Highlight a location in your motion map and select <Insert>. A new record is created and inserted before the highlighted record.
Update	Highlight a record in your motion map and press <Update>. The copied record will replace the highlighted record.

This will clear out all values in the X, Y, Z and Angle edit controls.

When you select to Disable Motion on the current feature, Geomet will drop into manual mode during the part inspection for this feature. This allows the operator to capture data points for the selected feature under Joystick or manual operations.

When the feature is completed, Geomet looks at the next feature and if it is required to return to DCC control, a targeting window is displayed to let the operator know where the next DCC point will start.

For a more detailed explanation, see Disable Motion.

Motion Point Type Selection

In this group, you have five type of motion points, IP, SO, MP, Auto-IP and HT. Next to each label will be the total count in the current motion map of each type. The IP, SO and MP point type utilize the XYZ edit control to change values. When selecting Auto-IP, the XYZ edit controls are disabled and the Auto-IP Setting group activates. HT points are used with the Renishaw PH20 5-Axis Probe System and reports only the number of HTs in the map. Editing of these points are accomplished in Feature Generators only.

To change a Point Type classification on a motion record, highlight the record and choose another Point Type. The total counts will update to reflect your change.

Motion Point Type Selection

Changing the Point Type assignment between SO, MP and IP can be accomplished by highlighting the record in the map and right-clicking to activate the sub-menu. Hover over Point Type and a seconday menu slides out. Select the new point type from the list.

Probe Assignment Update

To update the assigned probe number on all motion map records with one operations, select <Probe Update>. A selection tool appears showing all available styli currently available. Select the new stylus and press <Selecet>, see figure at right.

Probe Update

To update the assigned coordinate system on a single motion map record, or accross the full motion map, use the [Choose PCS Assignment] tool. To access the tool, highlight a record in the map and right-click to launch the sub-menu.

A PCS select tool appears and from the drop-down list, choose a new PCS. If you require the full map to be updated, place a check next to "Apply to entire motion map" before pressing <Select>.

The <Reset Selection> button returns the PCS assignment to the original setting.

The XYZ values shown in the edit controls, see figure 4, will show the current values of the highlighted motion point record in the list. Editing these values can be accomplished either by entering new values directly by typing them in, or by pressing the <IP> button on the joystick. By moving the CMM to a new location and pressing the <IP> button you can quickly edit motion map data to correct for any problems during motion.

figure 4, Position Edit Controls

An example of using the XYZ edit control would be to add a exiting IP at the end on a ID XY circle feature. The probe will stop at the last SO of the feature which will be below the surface. To append a new IP that will extract the probe to a safe location above the surface can be done following these steps:

1. Activate the Motion Edit tool for the selected ID Circle feature.
2. Highlight the last SO in the motion map (normally the last record). In this example the Z value is -0.25".
3. In the Z edit control, change the value to 0.50".
4. Press the <Append> button which will add a new record to the motion map. NOTE: The new record added will carry forward the same Point Type as the original selected SO record.
5. Highlight the new record and select the IP bullet which will change the Point Type from SO to IP.

Another example can be used to create an exit IP using the same ID Circle listed above.

1. Activate the Motion Edit tool for the selected ID Circle feature.
2. Move the CMM into a safe location above the circle. This position should have a direct line from the last SO.
3. Press the <IP> button on the joystick. This will populate the XYZ edit controls with the CMMs current position.
4. Press the <Append> button in the Motion Edit tool and a new IP record will be added at the bottom of the motion map.

In these two examples, you can start to see how easy it is to make changes to the motion map of a feature.