ThreadTracer for GibbsCAM
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ThreadTracer 4 - Online Guide

   Switch interface tabs with the buttons below to view documentation for each tab  
                      Thread Data Fillet / Chamfer Tooling Machining Thread Options Settings Control                                                                        

ThreadTracer uses a tabbed interface to present its parameters to you. Whatever thread is selected will have the appropriate thread data displayed on the first tab.
Switching between the different thread types are found in the Control tab. You will find descriptions for all input boxes and options in these pages.
Click the 'Online Guide' button in the plugin and it will open this online documentation in your web browser.

Buttress Thread \\ Thread Data Tab (Tab 1):

Major Diameter

Set the Major diameter for the buttress thread. If you work in metric, enter metric diameter, if inch, enter inch diameter.

ThreadTracer will calculate the correct thread form for the selected Buttres type, based on a given Major diameter.
There are 2 standards built in, and will generate the thread profile based on diameter and TPI.
Any Major and Minor diameters for the spesific standard must be supplied from the datasheet for the corresponding thread.

TPI and Pitch

Enter the TPI or pitch of the thread. Select to use TPI or pitch with the radio button.

External or Internal

Select from the dropdown if the thread are external or internal.

BUTT / PUSH-BUTT

Select from the dropdown the orientation for the trailing and pressure flank.

For both ANSI B1.9 and BS 1657 the trailing and pressure flank are set to 45/7° and are controlled by the 'PUSH-BUTT' or 'BUTT' dropdown, depending what side the pressure flank should be.
When the designation 'BUTT' is used, the thread is "pull" type buttress (external thread pulls) with the clearance flank leading and the 7° pressure flank following.
When the designation 'PUSH-BUTT' is used, the thread is a "push" type buttress (external thread pushes) with the 7° load flank leading and the 45° clearance flank following.
This description should be comfirmed by a simplified view showing thread angles on the drawing of the product.

Recalculate Button

Always click this button after the above entries have been changed, to calculate the correct new diameters, radiuses and flat root.

Thread Specifications

Select thread standard to use when calculating.
  • ANSI B1.9 1973 - American Buttress, angles for flank are locked to 45/7°
  • BS 1657 - British Standard 1657 Buttress, angles for flank are locked to 45/7°
  • Custom - For Custom Buttress or ratchet threads, use this to set custom flank angles on the thread profile.

  • Machining Diameters

    Enable input boxes for Major and Minor Diameter, and adjust to the required machining diameters.

  • Major Diameter : Value here is the Major Diameter of the thread for machining.
  • Minor Diameter : Value here is the Minor Diameter of the thread for machining.
  • Tolerances for the spesific standard must be supplied from the datasheet for the corresponding thread and applied here.

  • Thread Height : Value here will be the calculated thread height from the Major and Minor diameters above.
  • Flat Root Width : This value are automatically calculated from the selected thread specifications and can not be changed. It can be only be edited when you select 'Custom' thread'.
  • No. Starts : Select number of starts, if the thread is multistart.
  • Lefthand Thread : Check this if its a lefthand thread.

  • Under the Padlock symbol are 3 checkboxes to edit and lock diameters, if the two upper boxes are checked, the thread height will always be calculated from the two locked numbers.
    Locking Major Diameter and Thread Height, the Minor Diameter will be calculated with using the locked numbers.
    Only 2 numbers can be locked, if all three are locked, it will by default always use Major and Minor diameter and then calculate thread height.

    If you edit a diameter and enter a wrong number or deletes the entry, clicking 'Recalculate' will restore the numbers back to initial values.

    Control buttons at the bottom.

    Use the buttons at the bottom of the ThreadTracer dialog to turn on or off actions to make.


    Everything in the window is controlled by the 'Do It' button.

    You can turn on/off options, generate visual geometry, change cut depths, change tool sizes and everything will be recalculated and updated when you press 'Do It'.
    As long as the 'Process Ops' or 'NC Postprocessor' are disabled, no GibbsCAM operations or g-code will be generated.

    Set up the all the roughing and finishing of the thread and only enable 'Process Ops' when everything seems correct. With 'Process Ops' enabled it will generate GibbsCAM threading operations.

  • Material Control : This will enable material control, and keep all threading cuts within the set limits. By default the limits are always set to Major and Minor diameter.
  • Do Roughing : This will enable roughing of the thread. When enabled it will run the roughing of the selected thread with the set tool parameters.
  • Do Finishing : This will enable finishing of the thread. When enabled it will run the finishing of the selected thread with the set parameters.
  • Process Ops : This will create GibbsCAM threading operations for all the calculated thread coordinates.

  • 'Do Roughing' and 'Do Finishing' can be set individually. If only 'Do Finishing' is enabled and 'Process Ops', it will only create GibbsCAM threading operations for the finishing passes.

    Click 'Do It' button to start running the options that's selected.

    Click 'Save Data' to store the current thread setup into the GibbsCAM program

    It will create a new data entry if its a new thread, after the thread setup is stored the button will change to 'Update Data'.
    This way you can store and update the same thread entry, and not create a completely new thread entry every time the 'Save Data' is clicked.
    If you need to create a new data entry in the GibbsCAM part, you must close ThreadTracer and restart it, and it will now start with a new data entry.


    These lines of text can also be copied and pasted into other GibbsCAM programs, to quickly recreate the thread without typing in all the parameters again.

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