Harold Hall
Metalworking
Workshop Set Ups
Boring Head, Setups. Harold Hall
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3
Only pictures 2 and 3 can be clicked on to provide a larger view
In the majority of home workshops using a boring head on the milling machine is a relatively rare operation, as it is in mine, hence the limited number of examples.
Photo 1 shows a hole being bored in a piece of steel, eventually to become part of a quadrant for holding gears when cutting metric threads on a Myford lathe with a screw cutting gear box. LINK
Opening up a hole from a small drilled hole is a slow job and had it have been shorter, mounting it on the lathe’s faceplate to bore the hole it would have been quicker.
Photo 2 shows my mini boring head being used to bore a hole in a part for a stationary steam engine. Normally, I would, as most others would, have held the part in the four jaw chuck to bore. However, I wanted to provide and example of using my mini boring head with my lathe mounted milling head. LINK
The task in Photo 3 is not actually using a boring head but has similarities. I think initially I bored each plate individually to be close to the size required and finalised the diameters after assembly as seen in the photograph. This was done to ensure that the two bores were perfectly in line. Had I have had a boring head with a number two Morse taper I would have used that as it would have had a calibrated feed However, using the four jaw to provide the adjustment worked quite well. The part was for my faceplate balancing fixture. LINK