Do you need to drill an exact hole in the motor shaft, round pipe or conventional non-ferrous metal blank? To do this, you can use a simple home-made device for centering the drill on a drilling machine.
Using this tool, you can easily set the position of the chuck on a drilling machine so that you drill the most even hole in a round pipe or other workpiece exactly in the center.
First of all, the master makes markings on a sheet of metal using a white pencil, a ruler and a vernier caliper. Then the grinder cuts the workpiece for future methods. The internal angle of the part should be 90 degrees.
The main stages of work
A master cuts a small piece from a round bar of suitable diameter, then on a milling machine at the edge of the workpiece makes a flat cut from the surface (flat) parallel to the axis of the bar. With the help of a cutter, a central line is drawn.
In the next step, it will be necessary to drill a hole in the rod and the center finder, and then connect them together with a bolt and nut.
Well, then everything is very simple. The author clamps the homemade work in the chuck of a drilling machine, and fixes the pipe in a vice. Then it is necessary to touch the workpiece with both ends of the center finder so that the tip of the wedge is aligned with the center line above.
Details on how to make a tool for centering the drill on a drilling machine can be found in the video on the website.
