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Example 2: Use of bulges
Definition: A BULGE is a "positive" pocket
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Job description
Base Cylinder: 72 mm DIA x 10 mm height
Hexagon: 30 mm radius x 10 mm height
Block dimensions (LxWxH): 75 mm x 75 mm x 30 mm
G-Code file: 101.nc
G-Code program: O101
Customer: Gsimple Tutorial
Part Number: EX2
CNC Machine: Haas VF0
Project file: ex2.gsi
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Setup
Open GSimple
Define your project using Setup/Project
Define the block using Setup/Block. Tools will be zeroed on block top face, so leave "Top" at 0
Save your project using File/Save as "ex2.gsi"
Select Setup/User Coordinates and set them at the center of the block (X=37.5, Y=37.5)
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Attach a cylindrical "bulge"
Select the block as parent (left click or use the right-click menu). The block will be colored red
Select Shape/Cylindrical Bulge
The center (as all X,Y settings) are in user coordinates, so we set it at X=0, Y=0
Leave, for the moment, all other settings (tools, surface quality, chamfer etc) at their default values
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Attach a polygonal bulge
Select the cylindrical bulge you have just drawn as parent (left click it or use the right-click menu)
The cylinder will now be colored red
Select Shape/Polygonal Bulge
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Check your drawing!
Now we have finished drawing our object!
Click on the polygon and take a look at the "Z" on the footer line
Z is 0 indicating that the top face of the polygon is at Z=0
Click on the cylinder. Z should become -10
Click on the block. This is now what will have been left over from the block, so Z will be -20
Now click out of the block, on the machine table (it is not visible now). Z should become -30
If you want to see the table make it visible using the View/View Options dialog.
As a last check, go to View/Isometric and get a 3D view of the object
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Select your tools!
We will use a 25mm Dia Facemill for rough milling and a 10mm Dia fine end mill for finishing
Open the Setup/Toolholder Dialog and attach these tools at T1 and T2 as we did in Example 1
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Compile!
Select G-Code/Make
Now we are ready to view the code, run it on the screen
and download it on our machine for production!
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Print report
The last step is to print a report for the shop floor. Gsimple will produce it in HTML format and invoke your browser
for viewing and printing
Select File/Print Report
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A final note
Is our object realy ready? The answer is no! We have milled it to shape but it is still "stuck" on the
remaining part of the block. The next step would be to turn it up-side down and mill it down. You can
do this very easily with GSIMPLE -just look at the Example 4.
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