University:
Boston University
Course:
GRS CS 910 | Directed Study: Systems
Academic year:

2022
Views:

113

Pages:

8
Author:

hOllamhq6wo

TUTORIAL #3 - WIRE EDM OPEN PROFILE In this tutorial you will learn how to create a Wire EDM part from open profile geometry. An open profile part is really not that different than a closed profile part, but there are certain things to keep in mind. 1. Launch GibbsCAM and open the part Open Profile.vnc. 2. Select all the geometry (Ctrl-A) and transfer the data to the Wire EDM package. The first thing we need to do is to set the wire configuration and strategy. 3. Click the Wire Configuration button . It is the top left button in the Top Level palette. 4. Enter the values shown here. 27 5. Click the Machine strategy tab and enter the settings shown. 6. Click Gluestop options tab and enter the settings shown. 28 7. When you have finished, click OK. (Click OK again to dismiss any warning message (which might occur if the Cutter Radius Compensation settings are not as the system desires). We have set up the machine. We can now put a toolpath on our geometry. Check to ensure that the direction indicators are pointing from the top of the part to the bottom. If arrows are not being drawn on your geometry, change this in the Configuration from the top Toolbar. 8. Now click the Machining button dialog in the Top Level Palette. 9. Click anywhere on the part. 10. If the indicators are pointing in the wrong direction ie. not downwards, close the Create wire part dialog by clicking OK. The part will turn red in color. Right-click on any line. A dropdown menu will appear. 29 11. Choose Rev Prof Dir. Click the Machining button and then anywhere on the part again. Open profile parts travel in one direction and have a definite starting place, so the element you click on to select a profile to cut does not matter 12. Enter information in the Create Wire Part dialog as shown here. 13. When you are ready, click Select start point. 14. Select the point that lies above the open profile and click OK in the Gluestop lead in/out dialog. 30 15. Click OK in the Create Wire Part dialog to generate the wire toolpath. There is a problem with the toolpath. We selected the Extend End option, which causes the wire to cut into the part. Instead of tangentially coming off the part we actually want to exit at 90 degrees when we cancel compensation. 16. Right-click anywhere on the EDM part and select Properties from the menu to modify the operation. 31 17. Turn off Start away from profile and Extend end. Enter a Normal Entry/Exit move of 0.25 as shown here and click on Update to change the operation. The results of the modified operation look much better with a sufficient lead-in and lead-out. We are now going to make one last modification to this part, which is to add a taper. 18. Right-click on the profile to open the dialog and make the changes shown. 32 19. Click Update to generate the following path. We will now post process this part. 20. Click the Create CNC Code button. 21. Enter a name in the Tape filename box and click GO. The rendering will run and code will be generated simultaneously. 33 22. Save the part when you are done. 34