Copy Milling Machine

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Copy Milling Machine


a machine designed for milling profiles (slabbing) or relief contours (three-dimensional milling) on articles made of various materials by means of a cutting tool (milling cutter), which reproduces on the article the surface or contour of a master device—for example, a master cam in the shape of a flat template, a three-dimensional model, or a contour drawing. The master device is mechanically, pneumatically, or hydraulically connected to a servomechanism, which directs the cutting tool. The servomechanism acts on an amplifying device on the one hand and, on the other hand, on an actuating device. Hydraulic, electromagnetic, or electro-optical relays are used in the amplifying devices of such machines. The actuating member may be a screw, a slide valve, an electromagnetic coupling, a solenoid, a differential, or some other device, and it may be driven by an electric motor or a hydraulic power cylinder.

According to the type of drive and servomechanism, a distinction is made among copy milling machines with a pantograph, for two-dimensional and three-dimensional work; all-purpose machines, whose pantograph is in the vertical plane on a rotating arm; single-spindle and multispindle machines with a round or rectangular table; automatic machines with mechanical feed; hydraulic and electric machines; and photographic machines. The accuracy of profile and the degree of surface roughness that can be produced by copy milling machines depend on the speed of movement of the servomechanism; they are 0.02 mm and ∇6, respectively.

Copy milling machines are used for machining pump vanes and turbine blades, ship propellers, cams, dies, press molds, sculptures, and jewelry.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Four tenders requesting local & international offers for the supply of (a) an automatic multi spindle feed bar machine for pins, (b) a horizontal vacuum furnace for the heat treatment under vacuum, (c) upgrading & modernization of a CNC copy milling machine, also (d) a CNC universal tool & cutter/ grinder machine (for tools sharpening).
The Factory includes all major production facilities like; Conventional Machines, CNC Machining Centres & Turning Machines, Gear Manufacturing Machines, Well-equipped Tool Room with modern facilities like Jig Boring, Thread Grinding, Spark Erosion, Die Sinking & Copy Milling Machines, Most Modern Heat Treatment facilities in particular for Automotive Transmission component compatible with international standards, Surface Treatment, Pressure Die Casting, Sheet Metal facilities, Design Center having Computer Aided & Manufacturing (CAD/.CAM) facilities were installed for Product Design & Tools/Jigs/Fixtures Design and CNC shop, Electronic Lab, Facility for Metallurgical & Chemical Laboratories.
Precision machines and cutting tools required to produce molds and dies for these processes run the gamut from EDM, small NC machines, and copy milling machines to large bed-type CNC machines [ILLUSTRATION FOR FIGURE 2 OMITTED].