The Bore  (4 Point) Cycle

Introduction

This topic will explain the Bore (4 Point) measure cycle, will describe how to access it, will explain the options found in it, and will explain how to use it with quick steps and two examples.

The Bore (4 Point) Cycle

 

This cycle measures a cylindrical cut extruded in the Z Axis with 4 points. This cycle can utilize the following geometry inputs: 

 

  • An arc whose normal is parallel to the Z Axis.
  • A cylindrical surface edge whose normal is parallel to the Z Axis.
  • A cylindrical surface whose normal is parallel to the Z Axis.

 

Note: The probe can be made to lift between measurements to avoid obstacles The touch points move away from each other in the X and Y Axes as it is meant to measure cylindrical cut extrusions.

 

To access the Bore (4 Point) cycle:

 

  1. In the CAM Tree, locate the desired Machine Setup for the Probing cycle, right-click the Machine Setup, and select Probing.

    The Probing dialog launches in the Data Entry Manager.

  2. Click the Operations(s) tab.

  3. Click the Parameters tab.

    By default the Selected Geometry list is given focus to allow you to select geometry from the graphics area.

  4. Select the applicable geometry.

    The geometry is added to the Selected Geometry list and the Initial Position and Parameters section are populated.

 

Note: Some geometry may be applicable to several cycles. In these cases the cycle that is selected based on the geometry may not be the intended cycle. In these cases, simple choose the correct cycle from the drop down list.

The Data Entry Parameters

Initial Position

  • X - determines the start point for the cycle along the X-axis of the current Work Offset.

  • Y - determines the start point for the cycle along the Y-axis of the current Work Offset.

  • Z - determines the start point for the cycle along the Z-axis of the current Work Offset.

 

 

Parameters

 

  • Z Measure Height - determines the end point for the cycle along the Z-axis of the current Work Offset.

  • Diameter - determines the width between surface contact points.

  • Update Work Offset
    - Updates the existing work offset values with the information received from the cycle.
    - Does not update the existing work offset.

 

Options

  • Radial Clearance - determines how close to the contact surfaces the probe should travel prior to moving down in the Z Axis.
    - With this check box selected, the value entered will determine how far away from the selected surface the probe will travel before moving down to make contact.
    - With this check box cleared, no extra clearance will be added.

Quick Steps - Bore (4 Point) 

 

  1. In the CAM Tree, locate the desired Machine Setup for the Probing cycle, right-click the Machine Setup, and select Probing.

    The Probing dialog launches in the Data Entry Manager.

  2. Update the Material Approach and Feature Parameters as necessary.

  3. Click the Operations(s) tab.

  4. On the Probe page, select, or define, the Probe to be used.

  5. Click the Parameters tab.

    By default the Selected Geometry list is given focus to allow you to select geometry from the graphics area.

  6. Select the desired piece(s) of geometry.

    The geometry is added to the Selected Geometry list and the Initial Position and Parameters section are populated.

 

Important: The available cycles are filtered by the geometry selected. If you selected geometry and do not have the desired cycle available, remove the geometry and reselect geometry compatible with the cycle.


  1. Update the Initial Position and Parameters sections as needed.

  2. Click the Options tab and update any options necessary.

  3. Click OK.

Example 1 - Bore (4 Point) 

In this example we:

 

  • Select the Probe feature.
  • Select a probe for the cycle.
  • Update the Machining Data and Feed groups.
  • Select the cycle.
  • Adjust the Initial Position.
  • Update the Parameters section.
  • Utilize the Options page.
  • Backplot the result.

 

Part 1) Selecting the Probe feature

The first step of any Probing cycle is to create a Probing feature in the Machine Setup it is intended to be used in.

 

  1. In the CAM Tree, locate the desired Machine Setup for the Probing cycle, right-click the Machine Setup, and select Probing.

    The Probing dialog launches in the Data Entry Manager.

Part 2) Selecting the Probe

Selecting a probe can be done with the following steps, or by simply deselecting the System Tool check box and inputting the appropriate data into the required fields.


  1. By default Measure is already in the Current Operations list. This will give us access to all available measure cycles in the Operation(s) tab.

    At the top of the dialog, click the Operation(s) tab.

  2. By default the Probe page is active. In this page, click the Tool Crib button.

    The Tool Crib dialog launches.

  3. Select your probe from the Tool Crib.

    1. If a probe has not yet been added to your Tool Crib, select the Add From Tool Library button and select one.

    2. If a probe has not yet been added to your Tool Library, select the Add button, define the probe in the Tool Parameters section, and select OK.

      The probe is added to the Tool Library and is automatically highlighted.

    3. Click OK.

      The probe is updated in the dialog.

Part 3) Updating the Machining Data and Feed groups

When selecting a tool from the Tool Crib, a tool number, and the Height and Diameter Offsets should already be correct. However, if you need to update them, you can do that in the Machining Data group. The Feed group will allow you to set a Protected Feedrate for the probe.


  1. Update the Machining Data as needed: 

    1. Update the Tool Number if needed.

    2. To have the cycle update the Height and Diameter Offset, select the Override Offset button and enter the values to update the offsets to.

  2. Update the Protected Feedrate in the Feed group as needed.

Part 4) Selecting the Cycle

The cycle can be selected with the drop down list under the Cycles section, but simply selecting the appropriate geometry will usually select the required cycle automatically. Since certain geometry could be applicable to several cycles, in some cases, the list will become much smaller.

 

Note: The Pocket measure cycle measures the distance between two parallel surfaces that are both either parallel with the Y Axis, or the X Axis. In this case we measure two surfaces parallel with the Y Axis.

 

  1. Click the Parameters tab.

    By default the Selected Geometry list is given focus to allow you to select geometry from the graphics area.

  2. Select a the cylindrical surface of the bore, which has been cut along the Z Axis.



    The geometry is added to the Selected Geometry list, the Initial Position and Parameters section are populated, and the toolpath becomes visible.



    Since our current geometry works for a Bore (4 point) cycle, that is the cycle that is currently selected for us.

  3. Select the edge of the parallel surface.

    The geometry is added to the Selected Geometry list, the and the Initial Position and Parameters section are populated, and the toolpath becomes visible.

Part 5) Adjusting the Initial Position

There is quite a bit of logic that goes into creating the initial position for you based on the geometry, and the cycle that you choose. While the initial position does not need to be adjusted in this case, we will play with a few of the values to explore how the toolpath reacts.

 

  1. In the Initial Position group, update the X value by adding +0.25 to the end, and pressing Tab.



    The value and the toolpath update to put the initial position of the probe a half inch further forward in X.

    However, notice how the end positions are tied to the initial position. Since this is obviously not what we need, we will set that value back as it was.

  2. In the Initial Position group, update the X value by adding -0.25 to the end, and pressing Tab.



    The value and the toolpath update to put the initial position back in its original position.

 

Note: Since our contact points are arranged in a radial pattern, adjusting the X,Y Initial Position will not work. However, we can adjust the Z Axis.

Part 6) Utilizing the Options page

The values in the Options page should only be utilized if you are familiar with exactly how the individual options work.

 

  1. Click the Options tab.

  2. Update any and all options that are needed for the cycle.

  3. Click OK to exit the dialog.



    The dialog closes and the Probing feature is added to the CAM Tree.

Part 7) Backploting the result

The Backplot is a great way to verify the movements of any of the operations you create.

 

  1. In the CAM Tree, right-click the C Measure operation in the Probing feature and click Backplot.

    The Backplot dialog launches, and the probe and first move become visible.



  2. Click Next three times to view the probe movements.



  3. Click Close.

    The dialog is closed and the feature is ready to post.

Example 2 - Bore (4 Point) with obstacle

In this example we:

 

  • Select the Probe feature.
  • Select a probe for the cycle.
  • Update the Machining Data and Feed groups.
  • Select the cycle.
  • Update the Options section.
  • Adjust the Initial Position.
  • Utilize the Options page.
  • Backplot the result.

 

Part 1) Selecting the Probe feature

The first step of any Probing cycle is to create a Probing feature in the Machine Setup it is intended to be used in.

 

  1. In the CAM Tree, locate the desired Machine Setup for the Probing cycle, right-click the Machine Setup, and select Probing.

    The Probing dialog launches in the Data Entry Manager.

Part 2) Selecting the Probe

Selecting a probe can be done with the following steps, or by simply deselecting the System Tool check box and inputting the appropriate data into the required fields.


  1. By default Measure is already in the Current Operations list. This will give us access to all available measure cycles in the Operation(s) tab.

    At the top of the dialog, click the Operation(s) tab.

  2. By default the Probe page is active. In this page, click the Tool Crib button.

    The Tool Crib dialog launches.

  3. Select your probe from the Tool Crib.

    1. If a probe has not yet been added to your Tool Crib, select the Add From Tool Library button and select one.

    2. If a probe has not yet been added to your Tool Library, select the Add button, define the probe in the Tool Parameters section, and select OK.

      The probe is added to the Tool Library and is automatically highlighted.

    3. Click OK.

      The probe is updated in the dialog.

Part 3) Updating the Machining Data and Feed groups

When selecting a tool from the Tool Crib, a tool number, and the Height and Diameter Offsets should already be correct. However, if you need to update them, you can do that in the Machining Data group. The Feed group will allow you to set a Protected Feedrate for the probe.


  1. Update the Machining Data as needed: 

    1. Update the Tool Number if needed.

    2. To have the cycle update the Height and Diameter Offset, select the Override Offset button and enter the values to update the offsets to.

  2. Update the Protected Feedrate in the Feed group as needed.

Part 4) Selecting the Cycle

The cycle can be selected with the drop down list under the Cycles section, but simply selecting the appropriate geometry will usually select the required cycle automatically. Since certain geometry could be applicable to several cycles, in some cases, the list will become much smaller.

 

Note: The Pocket measure cycle measures the distance between two parallel surfaces that are both either parallel with the Y Axis, or the X Axis. In this case we measure two surfaces parallel with the Y Axis.

 

  1. Click the Parameters tab.

    By default the Selected Geometry list is given focus to allow you to select geometry from the graphics area.

  2. Select a the cylindrical surface of the bore, which has been cut along the Z Axis.



    The geometry is added to the Selected Geometry list, the Initial Position and Parameters section are populated, and the toolpath becomes visible.


Part 5) Updating the Options section

The Options section for this cycle consists of the Radial Clearance value only. Selecting this check box will update the moves to first avoid an obstacle before dropping down. The value will allow you to set how close to the surfaces to move before dropping down to the contact depth.

 

Note: The next several steps will be shown in a cut-away side view so we can get a better feel for what is happening.

 

  1. In the Options section, select the Radial Clearance check box.



    The toolpath is updated to avoid an obstacle before dropping down.

Part 6) Adjusting the Initial Position

There is quite a bit of logic that goes into creating the initial position for you based on the geometry, and the cycle that you choose. While the initial position does not need to be adjusted in this case, we will play with a few of the values to explore how the toolpath reacts.

 

  1. In the Initial Position group, update the X value by adding +0.25 to the end, and pressing Tab.



    The value and the toolpath update to put the initial position of the probe a half inch further forward in X.

    However, notice how the end positions are tied to the initial position. Since this is obviously not what we need, we will set that value back as it was.

  2. In the Initial Position group, update the X value by adding -0.25 to the end, and pressing Tab.



    The value and the toolpath update to put the initial position back in its original position.

 

Note: Since our contact points are arranged in a radial pattern, adjusting the X,Y Initial Position will not work. However, we can adjust the Z Axis.

 

  1. In the Initial Position group, update the Z value to 0.3.75, and press Tab.



    The value and the toolpath update to put the moves out from the initial position closer to the part in Z.

Part 7) Utilizing the Options page

The values in the Options page should only be utilized if you are familiar with exactly how the individual options work.

 

  1. Click the Options tab.

  2. Update any and all options that are needed for the cycle.

  3. Click OK to exit the dialog.



    The dialog closes and the Probing feature is added to the CAM Tree.

Part 8) Backploting the result

The Backplot is a great way to verify the movements of any of the operations you create.

 

  1. In the CAM Tree, right-click the C Measure operation in the Probing feature and click Backplot.

    The Backplot dialog launches, and the probe and first move become visible.



  2. Click Next four times to view the probe movements.



  3. Click Close.

    The dialog is closed and the feature is ready to post.