Post on 27-Jun-2020
Locating
Edge Finder - can be used to find the edge of the part. While the edge finder is spinning, move
the tip close to the edge of the part. When the tip
is close, it will rotate concentric to the upper
section of the edge finder. Once the tip makes
contact, the tip will shift sideways, as seen in the
picture. Compensate for the radius of the edge
finder, which is usually 0.1”.
http://www.micro-machine-shop.com/edge_detect_2.jpg
Dial Indicator - used to find the center of larger circles (typically larger than half an inch). Take
the mill out of gear and touch the indicator to the
edge of the circle. Manually rotate the spindle.
Adjust the x and y until the reading stays
constant as you spin the indicator.
http://s72.photobucket.com/user/miltons_stuff/media/CenterFinder.
jpg.html
Part Stop - can be used when making multiple parts. The stop allows you to change out parts
while maintaining your zero.
http://i.ytimg.com/vi/kvpjLv_R0zU/maxresdefault.jpg
A piece of paper can be used to find the z zero. Put a piece of paper between the tool and the part. Slowly lower the tool while moving the piece of paper back and forth until the piece of paper cannot move. Measure the paper thickness to know how far above the part you are.
Gauge pins - can be used to find the location of small holes. Find the largest gauge pin that fits in the hole. Clamp the gauge pin into the drill vice. Eyeball the center of the hole. Gently try to fit the gauge pin into the hole by moving the quill. Adjust the x y until the pin slides into the hole. This is the center.
http://www.frets.com/FretsPages/Blogs/37D28/37d28_2.html