SU1634375A1

SU1634375A1 - Cutting tool

Info

Publication number: SU1634375A1
Application number: SU884618002A
Authority: SU
Inventors: Владимир Анатольевич Демидов; Анатолий Евгеньевич Аникин; Владимир Павлович Игнатьев
Original assignee: В.А Демидов, А.Е Аникин и В П Игнатьев
Priority date: 1988-12-08
Filing date: 1988-12-08
Publication date: 1991-03-15

Abstract

Изобретение относитс к металлообработке , а именно к режущему инструменту с механическим креплением сменны режущих пластин Целью изобретени вл етс повышение жесткости режущего инстру мента Режущий инструмент содержит кор пус 1 в гнезде 2 которого размещена режуща пластина 3 В корпусе 1 установив ны т га 6 с уступом 13 и нажимной элемент 9, образующие винтовой замок Элемент 9 имеет винтовую поверхность 11 ограниченную криволинейной поверхностью 12 кото ра имеет в проекции на плоскость перпендикул рную оси элемента 9, форму спирали Архимеда. 3 з.п.ф-лы, 10 илThe invention relates to metalworking, namely to a cutting tool with a mechanical fastening replaceable cutting plates. The aim of the invention is to increase the rigidity of the cutting tool. The cutting tool contains the core 1 in the slot 2 of which the cutting plate 3 is placed. and the pressure element 9 forming a screw lock. The element 9 has a screw surface 11 bounded by a curvilinear surface 12 of which has, in the projection on a plane, perpendicular to the axis of element 9, the shape of a spiral Archimedes. 3 hp ff, 10 sludge

Description

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Claims

Claim

1. A cutting tool with a cutting interchangeable plate fixed in the holder socket, pressed against the walls of the socket by a curved rod with a step and a pressure element in the form of a screw, engaged with each other and angled to the supporting surface of the socket, characterized in that, with In order to increase rigidity, the engagement of the ledge of the thrust and the pressure element is made in the form of a screw lock, the capture of which at the end of the pressure element is two mating surfaces, one of which is made screw for interaction with a step ledge when closing the lock, and the other is curved to interact with the end of the rod when opening the lock, while the curved gripping surface of the pressing element limits the part of the screw surface from the center of the pressing element to the edge of its end, and the generators of the curved surface are parallel to the axis of the pressing element.

2. The tool pop. 1, distinguished by the fact that the curved surface of the pressing element in projection onto a plane perpendicular to the axis of this element has the shape of an Archimedes spiral.

3. The tool popp. 1 and 2. characterized by the fact that the screw grip surface of the pressing element has one direction with the thread forming the outer surface and the pitch P is at least

P = K [N ctg a + P _p (1 + 1, where K is the coefficient of use of the coil of the screw surface, equal to the ratio of the pitch of the screw surface to its length:

N is the magnitude of the traction in a direction perpendicular to the axis of the element for traction;

a - the angle between the axis of the hole of the housing to accommodate the traction and the axis of the hole of the housing to accommodate the element to move the traction;

PP - the pitch of the thread facing the outer surface of the element to move the rod.

4. The tool pop. 1, characterized in that the surface of the thrust ledge in contact with the screw surface of the pressure member is cylindrical.

Fig 7

FIG. 9