SU133321A1 - Milling, grinding and polishing machine for surface treatment of bodies of revolution - Google Patents

Description

MILLING-GRINDING-POLISHING MACHINE FOR TREATING SURFACES OF BODIES OF ROTATION

It was filed on April 29, 1959 No. 626706/25 to the Committee on Inventions and Discoveries under the Council of Ministers of the USSR

Published in the "Bulletin of inventions number 21 for 1960

Known milling, grinding and polishing machines for surface treatment of bodies of rotation with the help of cylindrical face tools make it impossible to process the surfaces of rotation of the 8th order.

In the kinematic chain of shaping of the described machine, a planetary gear with internal gearing is applied, on the satellites of which the spindles with tools are located. The movement of tools is carried out on an equidistant distance to an ellipse that passes through a rotational vertex obliquely to its axis, which makes it possible to process surfaces of the 8th order.

The drawing shows schematically the described machine. Column 2 / moves column 2, carrying bracket 3 with counterweight 4. Bracket 3 can move in vertical direction along column guides 2. In addition, it is hingedly connected with ring 5, which is installed inclined to the axis, the passage rotation through the vertex of rotation at a given angle. Inside the ring 5, the body 6 can vary in the axial direction with the thrust ring 7 screwed to it in the upper part, and the toothed rim 8 with the internal tooth, which is the sun wheel of the planetary mechanism, in its lower part. Inside the housing 6, the cup 9 rotates, on the axis 10 of which there are four jaws, 12, 13, 14, which are engaged with the ring gear 8 and are satellites of the planetary mechanism. The cup 9 receives rotation from the motor through the screw to the 15 and the screw bristle 16 and is the carrier in the planetary mechanism.

Spindles 17 are eccentrically located on satellites (crushed) П, 12, 13, and 14, which receive rotation from electric motor 18 by means of a belt drive 19. Working cylindrical face tool 20 is fixed on spindle x 17.

No. 133321-2 When the planetary mechanism is in operation, the axles of the satellites 11, 12, 13, 14 will move in a circle of axes of the spindles 17 placed eccentrically, therefore the axes of the tools 20 will move along an ellipse, and the envelope of the outer surface of all positions of the tool 20 will be equidistant to the ellipse located from the curve at a distance equal to the radius of the cylindrical tool 20.

The billet 21 is fixed in the housing 22, rotating from the electric motor on the shaft 23, the axis of which passes through the vertex of rotation. When the workpiece 21 is rotated, the tool 20 will move relative to the workpiece 21 along an equidistant path to an ellipse passing through the top of the rotational surface inclined to its axis at a given angle.

Subject invention

Milling, grinding and polishing machine for treating surfaces of rotation bodies using cylindrical face tools, characterized in that, in order to treat surfaces of the 8th order, formed by moving the tools along the equidistant path to the ellipse passing through the top of the rotation surface inclined to its axis , in the kinematic chain of shaping, a planetary gear with internal gearing is applied, on the satellites of which the spindles with tools are located.