Mill Work Holders - 3: The Edge Finder
|WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.|
|After aligning the vise it is sometimes necessary to precisely locate a position on the vise or the work piece held by the vise. For this task an edge finder is available. An edgefinder is a precision instrument that assists the machinist in locating important features on the work piece. It consists of a shank and a floating tip. The edgefinder tip is precisely ground to a known diameter. In this case, .200 inch, but others are available.
The tip of the edgefinder is held to the shank with a tension spring and can move side to side. So that you will not damage the spring, do not use the edgefinder at a spindle speed higher than 1000 RPM .
Some important facts to know before continuing:
The edge finder can be used to locate the edge plane of a part with reasonable accuracy. The following procedure uses a DRO , but the same process can be performed with the micrometer dials on the table handles.
Setting longitudinal direction (X):
The same procedure can now be used to locate an edge in the cross direction (Y)
label: Milling machine, work holding, clamps, regidity, precision, vise, alignment, edge finder, DRO, interchangable vise jaws, sanp jawa, collet, chuck, jogs, modular fixturing, table clamps