New Concepts in Milling Handbook
A practical approach and illustrated guide to milling cutter selection and use
<Table of Contents © 1973 Niagara Cutter Inc.
Basic Cutter Styles and Their Application - ( «Back )
Interlocking Cutters - screen [ 1 | 2 | 3 | 4 ]
Four basic styles of interlocking cutters are used in metal working. These styles are illustrated in figures below. Two styles are readily available from Niagara Cutter. For cost economies and best deliveries Style "S" and Style "H" are recommended.
STYLES OF INTERLOCKING CUTTERS
NIAGARA STYLE "S" STAGGERED TOOTH INTERLOCKING CUTTER - side tooth offset. The style "S" interlocking cutter has 10 degree positive radial rake and 10 degree alternate right and left hand helical flutes. Alternate teeth extend across the center providing a smooth finish at the bottom of the slot and good chip disposal characteristics on the side teeth. The side teeth are ground with clearance and slight concavity to prevent dragging of the tooth in deep slotting operations. Style "S" is recommended for a wide variety of applications. The unique selection of standard Niagara staggered tooth cutters offers many combinations of width and multi-diameter interlock possibilities. It is recommended for deep slotting and/or step milling (see step milling interlock chart). Using two cutters, the width range is from .345 to 2.495. Infinite width range is available with two or more standard staggered tooth cutters. (Refer to Engineering Specifications Chart C for typical interlock combinations).
Style "S" interlock utilizes the standard Niagara staggered tooth cutter (442 sizes) which are designed with keyways in line so that all cutters with the same number of teeth and arbor hole can be interlocked regardless of diameter. By simply grinding the hubs, two or more staggered tooth side mills may be interlocked. The amount of interlock or overlap can be varied from as small as .010 to 3/32" or more, depending upon the widths selected.
When sharpening reduces the total interlock width, shims are used between hubs to regain the original total interlock width. When style "S" interlocked cutters are not cutting on the periphery, they may be reversed and used again eliminating one sharpening operation.