SU1634897A1 - Planetary gear - Google Patents

Description

one

(21) 4602494/28

(22) 09.09.88

(46) 03/15/91 .. Bull. Number 10

(71) Self-supporting center of scientific and technical creativity of youth Union

(72) P.I.Bogatyrev and E.A.Bukin

(53) 621.833.6 (088.8)

(56) Kulr Vtsev V.N. Planetary gears. M .: Mashinostroenie, 1966, p. 11, fig. 6

(54) PLANETARY RKLUKTOR

(57) The invention can be used in mechanical engineering and instrument-making, including in the feed drives of CNC machines and machining centers, in measuring machines and

other machines and machines. The purpose of the invention is to improve accuracy by providing backlash-free when reversing rotation and durability by performing a mechanism for transferring motion between the satellite and the output shaft in the form of guides 12 made in the form of two segments rigidly fixed on the flange 7 of the output shaft for reciprocating the slide 10, connected by a rectangular window 11 with an emphasis 9 on the satellite. The slider 10 is spring-loaded to the output shaft on opposite sides of the springs 13 to reduce the inertial loads on the slider 10. 2 Il.

S

(L

12

&

WITH

00

CD

Fig 2

s

The invention relates to mechanical engineering and instrument making and can be used in drives of machine tools with a MPU and measuring machines.

The purpose of the invention is to improve the accuracy by ensuring the lack of play when reversing rotation and increasing durability.

FIG. 1 shows a planetary gearbox, a section; in fig. 2 is a section A-A in FIG. one.

The reducer includes a housing 1 and a lid 2 located in them a fixed central wheel 3 with internal teeth, an input shaft 4 with an eccentric 5, an output shaft 6 with a flange 7, mounted on an eccentric 5 sltellit 8 with a quadrilateral prismatic support 9 fixed on the end It is recognized as a transmission mechanism with an output shaft 6.

The motion transmission mechanism consists of a rectangular slider 10 with a rectangular window 11 mounted on a prismatic support 9 of the satellite 8 by a rectangular window 11 and mounted movably at the end of the flange 7 with the possibility of reciprocating movement in guides 12 made in the form of two segments with grooves rigidly fixed on opposite sides of the flange end 7.

The slider 10 is spring-loaded with diametrically opposite sides with respect to the output shaft 6 by means of two springs 13 fixed at one end at opposite ends of the flange 7, and at the other end at the opposite side walls of the slider 10.

The working surfaces of the slide 10, adjacent to the spring-loaded sides of the slide, have roller bearings 14,

The gearbox works as follows.

When the electric motor (not shown) is turned on, the input shaft 4 rotates with the eccentric 5. The eccentric 5 and satellite 8 axes also perform circular rotations relative to the main axis of rotation of the input shaft 4 and the output shaft 6. The satellite 8 runs around the fixed central wheel 3

For one revolution of the input shaft 4, the satellite 8, and hence the output shaft 6, performs only a part of the

n 634897

company equal to z

- z,

L / z ,, where

ten

15

20

25

thirty

35

40

45

50

55

teeth central - number of teeth

zf - cocolethism ca 3; TG LTA 8.

In connection with the eccentric rotation of the axis of the satellite 8 relative to the main axis of rotation of the input shaft 4, the prismatic emphasis 9 of the satellite, in addition to rotation relative to the axis of the eccentric 5, makes a reciprocating movement in the window 11 of the slide 10 for each rotation of the shaft 4. At the same time, the slide 10 also performs reciprocating movement in a plane perpendicular to the axis of rotation of the output shaft 6, n in the direction perpendicular to the direction of movement of the prismatic support 9 in the window 11. In addition, the slider 10 rotates ositelno axis of the shaft 6 under the action of rotation of the prismatic abutment 9. i

To reduce inertial loads, the slider 10 is spring-loaded to the flange 7 of the output shaft 6 by means of springs 13.

The proposed implementation of the mechanism for transmitting the movement of the satellite 8 to the output in l 6 provides a backlash-free connection of the mating parts when the driven and driving shafts of the gearbox reversely rotate.

Claims (1)

Invention Formula A planetary gearbox, comprising a housing, an inlet with an eccentric and an outlet with a flange, a shaft, a fixed central wheel with internal teeth, a satellite mounted on an eccentric, and a motion transmission mechanism connecting the satellite to the output shaft, characterized in that, in order to improve accuracy By providing a bezorazornosti when reversing the rotation and increase durability, the mechanism for transferring motion is made in the form of guides rigidly mounted on the flange and made in the form of grooved segments, rectangular crawl Una with a rectangular window, spring-loaded from diametrically opposite sides of the output shaft and mounted for movement in the grooves, and fixed on the end of the satellite of the quadrilateral prismatic support for interaction516348976 The connections with the rectangular window are through swarms adjacent to the spring storic supports by the working surfaces of the slider. 1