SU1227429A1 - Device for grinding external surface of out-of-round components with ellipse-shaped section - Google Patents

Description

The invention relates to mechanical engineering and can be used in the manufacture of critical parts.

The aim of the invention is to improve the quality of processing by increasing the vibration resistance of the device when using a dual crank-connecting rod mechanism for moving the slider carrying the grinding head.

Fig, 1 schematically shows the proposed device; Fig 2 is a diagram of his work.

The device contains a base 1 with guides 2 along which the slide slider moves carrying the grinding head 4 with the tool 5, the straight line forming 6 of which is perpendicular to the guide 2, On the base 1 there is also an actuator 7 connected to the worm 8. In The gears with the screw 8 are located three, in a row of identical worms, wheels 9, 0 and 11. On the worm wheels 9 and 11, the connecting rods 12 and 13 of two identical crank-connecting rod mechanisms 14 and 15 are fixed, respectively, crawl by 3. On the worm wheel 10 akreplen holder parts 16 17,

 The device works as follows.

When the screw 8 is rotated from the actuator 7, the hoist 17 fixed in the holder 16 also rotates, and the slider 3 together with the tool 5

27А292

placed along the guides 2, while forming 6 tools remain tangent to the elliptic prog file of the part, i.e. Its treatment is carried out according to the most efficient treatment method, the rolling method. With the indicated relative movement of the HOU plane and forming tool A-A (Fig 2), when 10 the plane rotates around a certain point F, and the straight A-A connected to the connecting rod OA moves reciprocatingly and progressively, this line bends around on the HOU plane, an ellipse with a center O, a focal distance and a semi-major axis, Therefore, if the ellipse is given by the equation

20

x ..

a b

or with their semi-axes a and b, then to adjust for running-in of this zllipse one should set the length of the connecting rod equal, and the length of the curved shaft equal to 4 a - b. In order to adjust the mechanism according to the required parameters of the ellipse, the crank mechanism 14 and 15 can be made adjustable.

Thus, using the invention, a high rigidity of the | 1lee / instrument is achieved, which allows ecTii processing with greater accuracy. Tew / less vibrations and dynamic forces, as a result of which / nq braiaejrta - processed r1 hv-surface.

Editor L. Veselovska

Fiz. Z

Compiled by N. Ermakova Tehred G. Gerber

Korre-Ktor, and .Musk

Order 2249/16

Circulation 740 Subscription

LOWERED by the USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

DEVICE FOR GRINDING THE EXTERNAL SURFACE OF A NON-ROUND DETAIL WITH A CROSS-SECTION IN THE ELLIPSE SHAPE, containing a base with guides on which a slider is mounted, a crank-moving mechanism for moving the slider located on the base, a crank-connected drive mechanism, and a crank-bearing mechanism a crank mechanism, and a grinding head with a tool, the straight line of which is directed perpendicular to the guide rails of the base, characterized in that, with the aim of higher To improve the quality of processing by increasing the vibration resistance of the device, it is equipped with a worm connected with πρΗ ·> water of the crank mechanism, a second crank mechanism for moving the slider identical to the first, and three identical worm wheels mounted in a row engaged with the worm, moreover each crank is connected to one of the worm wheels, holding -. The part body is rigidly connected to the third worm wheel, and the grinding head is located on the slider. (L ND ND Μ ND ς ©