Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool
Patent
1985-01-16
1986-12-09
Vlachos, Leonidas
Cutters, for shaping
Rotary cutting tool
Including holder having seat for inserted tool
407 41, B26D 100
Patent
active
046277714
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a milling tool with a disc-shaped base member and with a central securement bore and retainer cutouts for receiving and securing a respective cutting plate support, the cutouts being disposed in the region of the outer periphery and being equidistantly spaced from each other and being open towards the front face of the base member, wherein each cutting plate support is adjustable and fixable in the respective retainer cutout both in axial as well as, independently therefrom, in a radial direction and carrying each a cutting plate disposed with its main plane oriented generally radially.
A milling tool of the type mentioned at the outset is known from West German patent specification DE-OS 3125185, wherein each cutting p1ate support is adjustable by means of two adjustment wedge mechanisms in radial direction and, independent therefrom, in an axial direction. In this known milling tool, a respective cutting plate is secured to its cutting plate support and in a recess provided for the purpose, by means of a securement bolt. An adjustment of the cutting plate with respect to the positioning of its cutting edges during the rotation about an axis extending perpendicularly to the tool axis (or perpendicularly to the main axis of the cutter plate) is not possible in this known milling tool. Thus, an adjustment, of all cutting plates disposed about the periphery of the known milling tool such that their cutting edges would also extend at a uniform angle with respect to the axis of the milling tool is not possible.
From West German Patent Specification DE-OS No. 3036527, a milling tool is known wherein the radial adjustment of the cutting plate support is effected by two set screws engaging the support surfaces at two points. The screws extend radially and are disposed one after the other relative to the axial direction of the tool. They are devoid of a guiding and support by a radial surface which would extend perpendicularly to the axis of the tool. Since these two set screws must be actuated independent on each other and since a guide means of the cutting plate support along a plane perpendicular to the axis of the tool is not provided, an exclusively radially oriented adjustment of the cutting plate support without simultaneous tilting about an axis perpendicular to the axis of the tool is not additionally available. A radial displacement and adjustment of the cutting plate and a tilting displacement and adjustment of the plate independent on each other is not possible in the known milling tools due to the particular holding and adjustment mechanisms, unless one uses auxiliary control devices such as a transillumination apparatus, by means of which the adjustment motion during the actuation of the set screws can be controlled. It is an object of the invention to provide a milling tool of the type referred to at the outset, which would, on a simple structure, enable independent adjustments of the cutting plate in axial direction and in radial direction and independently therefrom would enable an inclination adjustment of the cutting plate about an axis extending perpendicularly to the axis of the tool, in a simple, quick, accurate and reliable way while reliably holding the cutting plate in the adjusted state.
According to the invention, the cutting plate is arranged in a recess of a cutting plate spacer having a shape complementary with the plate, that the cutting plate spacer is movable on the cutting plate support about an imaginary axis generally perpendicular to a radial plane of coincidence with the central axis of the base member and is arranged for fixed securement relative to the cutter plate support.
The inventive milling tool has substantial advantage over the known prior art. By the arrangement, according to the invention, of each cutter plate in a recess complementary in shape to the plate and arranged in the associated cutting plate spacer which itself is so arranged on the associated cutting plate support that it is movable about a plane generally perpendicular to the cen
REFERENCES:
patent: 1468774 (1923-09-01), Caldwell
patent: 2440978 (1948-05-01), Schlenkert
patent: 2846757 (1958-08-01), Klosterkemper
patent: 3121939 (1964-02-01), Williams
patent: 3129615 (1964-04-01), Lombardo
patent: 3363299 (1968-01-01), Gowanlock
patent: 4470731 (1984-09-01), Erkfritz
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