Milling Cutter

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milling cutter

[′mil·iŋ ‚kəd·ər]
(design engineering)
A rotary tool-steel cutting tool with peripheral teeth, used in a milling machine to remove material from the workpiece through the relative motion of workpiece and cutter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Milling Cutter


a multitooth or multiblade cutting tool in the form of a body of revolution, used to cut metals and other materials by milling.

Depending on their purpose, milling cutters are classified as cylindrical (plain), face, circular grooving (one-, two-, and three-sided), slitting, end, key-seat, T-slot, angle, and profile (including disk-type gear milling and end-milling type) cutters and hobs (see Figure 1). Cutters may also be classified according to the tooth cross section (sharp-pointed and relieved), the tooth shape (straight, helical, staggered), the direction of the helical grooves (right-handed, left-handed), the cutter design (solid, composite, cutters with inserted teeth or blades, and gang cutters), the mounting method (arbor-type and with a conical or cylindrical shank), and the material from which the cutting element is made (high-speed steel, hard alloy, and composition material).

Figures 2 and 3 give the geometric parameters of the cutting elements of the most widely used types of milling cutters—cylindrical plain and face cutters. The following ranges for optimum

Figure 1. Principal types of milling cutters: (1) cylindrical (plain), (2) face, (3) and (4) circular grooving, (5) slitting, (6) and (7) end, (8) angle, (9) and (10) profile, (11) key-seat

geometric parameters of the cutting elements have been experimentally established: –10°–30° for the rake angle γ, 10°–30° for the primary clearance angle α, 4°–10° for the secondary clearance angle α1 30°–90° for the side cutting edge angle ϕ, 1°—10° for

Figure 2. Geometric parameters of the cutting elements of a cylindrical plain cutter: (1) tooth face, (2) back of tooth, (3) relief surface, (4) helical side cutting edge of the tooth

the end cutting edge angle ϕ1; 1–2 mm for the length of the transitional cutting edge l, –5°–15° for the rake angle of the primary cutting edge λ, and 10°–45° for the helix angle ω.

Milling productivity, cutter durability, the quality of the milled surfaces, and the cutting force are also influenced by other geometric

Figure 3. Geometric parameters of the cutting elements of a face cutter with hard alloy teeth: (1) side cutting edge, (2) transitional cutting edge

parameters of the milling cutter: the relief angle in a normal cross section αn, the side rake angle γ’, the back rake angle γ”, and the transitional cutting edge angle ϕ0.


Gladilin, A. N., and N. P. Malevskii. Spravochnik molodogo instrumental ‘shchika po rezhushchemu instrumenta, 3rd ed. Moscow, 1973.
Vul’f, A. M. Rezanie metallov, 2nd ed. Leningrad, 1973.
Rezanie konstruktsionnykh materialov, rezhushchie instrumenty i stanki, 2nd ed. Moscow. 1974.
Obrabotka metallov rezaniem: Spravochnik tekhnologa, 3rd ed. Moscow, 1974.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
It is possible to unmount a milling cutter from the holder, measure it and mount it back without losing the precise position.
"The highly positive cutting edge geometry of the Xtra-tec milling cutters really pays dividends." emphasizes Walter technical advisor Matthias Fahrner, "as a soft cutting tool means far more quiet running and creates far fewer vibrations."
The milling groove forms a spiral or helical on the CTC roller surface, and to make the groove, the milling machine uses a milling cutter. On the first machines that became available, the lathe operator had to perform the following manual operations: set the milling depth before cutting each groove; start the forward cutting motion of the machine; retract the milling cutter after the completion of the cutting of each groove; index to the next helical groove after the cutting of each groove; and start the reverse motion of the machine after the cutting of each groove.
"The highly positive geometry of the indexable inserts in the Xtra*tec milling cutter body result in an extremely soft cut with minimal cutting pressure," Volker Ernst, Walter technical advisor, said.
With its four teeth, the milling cutter is well suited for pre-finishing and fine-finishing.
For the milling cutter having [z.sub.1] = 12 teeth and [d.sub.1] = 80 mm the experimental conditions are presented in tests 1.1a to 1.9b and for the milling cutter having [z.sub.2] = 3 teeth and [d.sub.2] = 40 mm the experimental conditions are presented in tests 3.1a to 3.9b from Table 1.
Cutting tool and tooling system specialist Sandvik Coromant has developed tools for those who are involved in milling as well as those performing turning, with the CoroMill 745 face milling cutter and the CoroTurn Prime multi-task and axial type tool holders to help machine shops implement the new PrimeTurning methodology, which enables turning in all directions.
The SuperTurbo, for example, is available as a shank-type, shell-type, or screw-in milling cutter. Added into this are the easily comprehensible cutting data recommendations in the milling cutter catalog and the paperless ordering system offered by the Seco Online Store.
"A shoulder milling cutter, used by one of our customers for roughing operations, produced unacceptably high radial forces," advises Lothar Grosser, service engineer, Walter USA (Waukesha, WI), supplier of the new cutter.