SU1700316A1 - Reversible wavy drive with movable teeth - Google Patents

Abstract

The invention relates to reduction gears used in various sectors of the national economy, and can be used to transmit rotational motion from a motor to machines and mechanisms by alternately engaging teeth with varying angular velocities and torques. The aim of the invention is to increase the efficiency of the wave transmission by ensuring its reversal in the extreme positions of the gear. The goal is achieved by the fact that in a reversible wave transmission, the gear wheel is double-ended with a teeth difference equal to two and installed with the possibility of reciprocating motion, and the number of movable teeth is equal to the average gear teeth of the gear rims. 3 il.

Description

with/

with

The invention relates to reduction gears used in various sectors of the national economy, and can be used to transmit rotational motion from a motor to machines and mechanisms by alternately engaging teeth with varying angular velocities and torques.

The purpose of the invention is to increase the efficiency of the wave transmission by ensuring that it reverses to the extreme positions of the gear.

FIG. 1 shows a reversible wave transmission with movable teeth; FIG. 2 is a section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The wave transmission consists of an input shaft 1, an eccentric generator 2, movable teeth 3, clips 4, internal gear 5, gear 6, splines 7, switch 3. At the same time, gear 5 has two paired gear wrenches with a different number of cavities.

Reverse wave transmission works as follows.

The input shaft 1 rotates the generator 2 under the influence of which the teeth 3 move in the radial grooves of the yoke 4 and engage with one of the crown gears of the gear wheel 5. The latter can move along the slots 7 using the switch 8. If the gear wheel is in the right position 5 in engagement with moving teeth 3 will be its crown, having a number of cavities one more than the number of moving teeth 3

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(Fig. 2). In the extreme left position of the gear wheel 5, the cavities of its crown, having the number of cavities one less than the number of movable teeth 3, enter into engagement (Fig. 3). A different number of depressions on the rims of the gear wheel 5 is achieved due to their different geometry.

In the first case (FIG. 2), the gear ratio is

(Z5-Z3) 11 / (12-11) and 1,

in the second case (Fig. 3) (2 5- From) -11 / (10-11) 11. In the conventional notation, 2z is the number of movable teeth of the generator; Zs is the number of cavities of the left crown of the gear wheel.5; Z1s - the number of cavities of the right crown of the gear wheel 5.

Wave transmission can work with any number of teeth, i.e., have a different gear ratio. In this case, it is necessary to fulfill the condition under which the number

figure 1

0

five

n

the teeth of one rim is one more than the number of moving teeth, and the other rim is one less.

Claims (1)

Claims Reverse wave transmission, with movable teeth, comprising a generator, a gear wheel with internal gearing and a housing between them, in the grooves of which axially movable teeth for interaction with a gear wheel, characterized in that, in order to increase efficiency transmission by reversing it, the cogwheel is twin-ended with a teeth difference equal to two, and is mounted with the possibility of reciprocating motion, and the number of teeth equal to the average value of the crowns of the teeth of a gear wheel. # X Aa at FI.2.