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TUTORIAL SERIES FOR Mastercam VERSION 8

TUTORIAL 11 SWEEP SURFACE, ROUGHING, FLOWLINE TOOLPATH

129cc IT-Technolory 3D Milling Operation

Mastercam Tutorial 11

EXERCISE

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Mastercam Tutorial 11

GEOMETRY CREATION STEP 1: CREATE THE BLOCK MAIN MENU  Create  Rectangle  1 Point

Select this position

   

Select OK button Origin Press Esc to exit the command. Fit the geometry to the screen.

Select Join

MAIN MENU  Xform  Translate  All  Entities  Done  Rectang  [ Enter the translation vector ] Z-24  Select Join  Select OK button. Change the current Graphics View to Isometric by using the secondary menu bar.  Select Gview > Isometric

/  Fit the geometry to the screen.

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Mastercam Tutorial 11

STEP 2: CREATE THE ACROSS CONTOUR IN THE FRONT VIEW. Change the current Construction Plane to Front by using the secondary menu bar  Select Cplane > Front MAIN MENU  Create  Arc  Polar  Center pt  [ Enter the center point ] 36,0  [ Enter the radius ] 12  [ Enter the initial angle ] 180  [ Enter the final angle ] 0

STEP 3: CREATE THE LINE INSIDE THE ARC. MAIN MENU  Modify  Trim  Divide  [ Select curve to divide ] Select the line inside the 12 radius arc.  [ Select first dividing curve ] Select the end of the arc, A.  [ Select first second curve ] Select the other end of the arc, B.

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B A

Mastercam Tutorial 11

STEP 4: CREATE THE ALONG CONTOUR IN THE TOP VIEW. Change the current Construction Plane to Top. You may have to change your graphics view using Gview > Dynamic (manually rotate the image) to better see the geometry created in this section. MAIN MENU  Create  Line  Polar  [ Specify an endpoint ] 24,0  [ Enter the angle in degrees ] 90  [ Enter the line length ] 36  [ Enter the an endpoint ] 96, 96-12  [ Enter the angle in degrees ] 180  [ Enter the line length ] 24 BACKUP  Endpoints  [ Specify an endpoint ] Select the  endpoint of one of the polar lines, 1.  [ Specify an endpoint ] Select the  endpoint of one of the polar lines, 2.

MAIN MENU  Create  Fillet  Radius  [ Enter the fillet radius ] 30  [ Specify an entity ] Select line A.  [ Specify another entity ] Select line B.  [ Specify an entity ] Select line B.  [ Specify another entity ] Select line C.

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Mastercam Tutorial 11

STEP 5: CREATE THE SWEEP SURFACE. Sweep Surface: is a surface, generated by translating or rotating one or more contours (across contours) along one or two other contours (across contours). Applications: used when the across section of the surface at any point is constant (when the surface is generated from one across contour and alone along contour). Used also, when the across section at any section is not constant (when the surface is generated from two or more across contours and one or two along contours).

It is very important which contour you choose as contour. Chain first the across contour stating from the intersection between the two contours (also known as starting position). Chain the along contour starting from the same position as shown below. Starting MAIN MENU Position  Create  Surface  Sweep  [ Define the across contour ]  Single  Select the arc, on the left hand side  Done  [ Define the along contour ]  Chain  Partial  Select Entity A, near the arc.  Select Entity B, near the edge of the rectangle.  Done  Do it

STEP 6: CREATE THE FILE.

Entity A

MAIN MENU  File  Save  Save this file under “Your Name_11”

129cc IT-Technolory 3D Milling Operation

Entity B

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TOOLPATH CREATION STEP 7: DEFINE THE STOCK. MAIN MENU  Toolpaths  Job setup

Select the Radio button in front of Material

 Select OK button.  Select Aluminum 6061.

 Select OK button.  Select OK button to exit Job Setup

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Mastercam Tutorial 11

STEP 8: ROUGHING OUT THE SURFACE ( ROUGH ). MAIN MENU  Toolpaths  Surface  Rough  Radial  Cavity  [ Select output NCI file ] Save this file under “Your Name_11”  All  Surfaces  Done  Right-click in the large white box, and select Get tool from library to define a tool,  Make all the necessary changes as shown in the following pictures.

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Mastercam Tutorial 11

 Select Cut depths button.

      

Select OK button to exit Cut Depths. Select Gap Settings Select on Follow Surface(s) Select OK button to exit Gap Settings. Select OK button to exit parameter’s pages. [ Enter rotation point ] 24, 0, 0

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Mastercam Tutorial 11

STEP 9: FINISH THE SURFACE ( FLOWLINE ).         

Finish Flowline All Surface Done Change the flowline setting by selecting the parameter that should be changed. Cut dir ( to change the cutting directions ) Offset ( to change the side of the tool ) The following setting should look as shown in the following picture.

 Do it  Right click in the large white box, and select Get tool from library to define a tool.  Make all the necessary change as shown in the following pictures.

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Mastercam Tutorial 11  Select Filter button

 Select OK button.

   

Click on Gap settings button Click on Smooth Click OK button Click on OK to exit the parameter pages.

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Mastercam Tutorial 11

STEP 10: BACKPLOT THE TOOLPATH. MAIN MENU  Toolpaths  Operations  Select all  Backplot  Run

If you would like to watch the toolpath run slower, select Step, instead of run. Hold down the S key on your keyboard, or keep pressing the step key and you will be able to see the entire program at the speed that you wish, and be able to stop it at any time.  Press BACKUP to return to the Operations Manager.  Select OK to exit the Operation Manager. VERIFY – TOOLPATH VERIFICATION

STEP 11: VERIFY. MAIN MENU  Toolpaths  Operations  Select Verify button.  Select Machine button.

Select machine button

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Mastercam Tutorial 11 The computer will now simulate the process of the part being machine. The finished part should appear as shown in the following picture.

STEP 12: POST PROCESS THE FILE.  Select post button in Operation Manager.

 Select change post button and select the post processor that you want to use.

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Mastercam Tutorial 11

 Select Open button.

 Select OK button

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Mastercam Tutorial 11

 Select Save button.

STEP 12: SAVE THE UPDATE MC8 FILE MAIN MENU  File  Save  Reseve this drawing with the same name.  [ Delete old…. ] Yes.

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