In this article we will show you how to obtain standard-sized counterbored screw clearance hole in parts of Siemens NX. You know that the standard holes are generaly used in machine parts and also counterbored screw clearance holes are generally used for bolt assemblies in mechanical systems. Siemens NX has a special tool to obtain these standard counterbored screw clearance holes. We start with the how to drill standard counterbored screw clearance holes to parts by using Hole command in Siemens NX.
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To drill standard-size counterbored screw clearance hole to parts in Siemens NX, you need to click on the Hole command as shown by red arrow above.
After entering to the Hole command in Siemens NX, you need to select the Counterbored screw clearance Hole as shown by blue box above from the pop-up menu.
To drill counterbored screw clearance holes on Siemens NX parts, select the Counterbored form from the Form And Dimensions tab as shown by blue box above.
There are some kinds of standard counterbored screw types. Selecet on of them as shown by blue box above.
You need to select your standard screw size as shown by blue box in Hole command.
You can select the fit option between hole and the screw clearance from blue box above.
You need to specify your own counterbored screw clearance hole dimensions in Siemens NX;
C-Bore diameter, C-Bore Depth, Diameter, Start-Neck-End Chamfers are adjusted automatically according to selected standards from previous steps as shown by red and green boxes above. You need to enter the values of;
Depth: Depth of the counterbored screw clearance hole in Siemens NX as shown by red arrow.
Tip Angle: The angle of cone o the drilled counterbored screw clearance hole as shown by blue arrow in Siemens NX.
You can select a Depth Limit method to drill counterbored holes as shown by green box above:
Value: Enter a depth value for counterbored screw clearance hole.
Until Selected: It drills the hole up to selected feature.
Until Next: It drills the counterbored screw clearance hole up to Next feature.
Through Body: It drill the whole body that counterbored screw clearance hole geometry belongs.
You can adjust the depth of the counterbored screw clearance hole as shown in green box above;
Cylinder Bottom: 40mm depth will be adjusted according to the cylinder bottom.
Cone Tip: 40mm depth will be adjusted according to the cone tip.
After you done with the adjustments for your counterbored screw clearance hole driling operation in Siemens NX, click OK or Apply to complete it.
As you can see above counterbored screw clearance hole is drilled to the Siemens NX part with Hole command.
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