We deal with lot of cases where we need to drill holes on cylindrical surfaces. The modelling techniques may be differ what we use in actual production/manufacturing. This post discusses some of the methods that you can use to model your cylindrical parts with hole. Hole Wizard (hereafter will be called as HW) has been utilized to do all the drilling (creating hole feature) in this post. A very simple cylinder has been used to demonstrate the methods.
1. Select the cylindrical surface you need to create hole on and click on HW.
5. You’ll see a pointer for placing a point for hole location/position. You may press esc or right click (hereafter will be called as RMB) and select select. Please note that by default if you select a surface and then click on HW, SW will automatically place a point on the place you clicked else you can add the point later on after you switch to position tab.
6. There can be several ways to position the hole. Select the hole point and appropriate plane (Front plane in this case, you may choose a different plane, create another plane; depending on need and part geometry). Add an On Plane relation between them.
7. You may notice change in the position of hole point.
8. Now set the appropriate plane to show (Top plane in this case, you may choose a different plane, create another plane; depending on need and part geometry) and switch to an orientation perpendicular to hole.
The position is fully defined and so is the hole (indicated by black colour of the point as well as sketch status message in the status bar).
Method 2 is continuation of Method 1. In this method I have used a sketch which was used to create the revolved feature/cylinder.
1. Set the sketch to show from feature manager. Expand the feature manager tree and RMB on the sketch. Select show from the list or click on show icon. You can do it later also. Make sure you have Sketches selected under view to see the sketch.
2. Repeat steps 1 to 5 as explained in Method 1.
3. After you have switched to position tab (and come out of point placement/ creation) select the hole point and vertical line. You’ll be prompted with 2 relations “Midpoint” & “Coincident”. Depending on the need select one of these.
Method 3 is more or less similar to Method 2.
1. Repeat the steps 1to 3 as explained in method 2.
2. Now instead of midpoint relation, select coincident relation.
Method 4 requires you to create an extra plane (tangential plane) on the cylindrical surface.
1. Select the appropriate plane (Front plane in this case, you may choose a different plane, depending on need and part geometry) & cylindrical face and click on Plane (on feature tool bar or Insert > Ref. Geometry > Plane).
Select On surface option in plane property manager. Click on other solutions to position your plane.
Enjoy playing with hole on cylindrical surface. Do share if you have more methods to drill (create) hole features on cylindrical surface.