SU1307127A1 - Wave transmission - Google Patents

Abstract

The invention makes it possible to increase the load capacity of wave transmission by improving the conditions of engagement across the width of the gear rims of the wheels by increasing the flexural rigidity of the intermediate ring in the axial direction. G-generator 3 waves deforms the intermediate ring 4 and the flexible wheel 1. The thickness of the ring 4 is 3-15 times greater than the thickness of the flexible wheel, and on the inner surface of the ring 4 are made along the grooves 5. When deformed by the generator 3 waves, the width is made in the intermediate ring 4 grooves 5 are different in different zones around the perimeter, which provides the ring 4 in the circumferential direction with bending stiffness close to the stiffness of the flexible wheel 1. 4 Il. a (Fig. 2

Description

113

The invention relates to mechanical engineering and can be used as a gearbox.

The purpose of the invention is to improve the transmission capacity by improving the conditions of engagement across the width of the gear rims of the wheels by increasing the flexural rigidity of the intermediate ring in the axial direction.

Figure 1 shows a wave transmission, axial section; figure 2 is the same cross section; fig.Z - node I in figure 2; on fi-g. 4 - node II in FIG.

The wave transmission contains a flexible 1 and a hard 2 wheels, a generator of 3 waves and an intermediate ring 4, installed by a flexible wheel 1 and a generator of 3 waves. The thickness h of the intermediate ring 4 depending on

the thickness h of the flexible wheel 1 under the ring gear is selected in accordance with the ratio h (3-15) h ,, and on the inner surface of the intermediate ring 4 are uniformly spaced circumferentially along the forming slots 5.

When the flexible wheel 1 is made in the form of a ring, the transmission has a second rigid wheel 6. The dimensions of the intermediate ring 4 and the grooves 5 in it are selected from the following conditions: in the circumferential direction, the ring 4 has flexural rigidity close to the flexural rigidity of the flexible wheel 1; in the axial direction, the ring 4 has a bending stiffness several times greater than the bending stiffness of the flexible wheel 1; The minimum width b of the grooves 5 in the undeformed ring 4 ensures that there is no tension between the side walls of the narrow part of the grooves 5 in the deformation zones by the wave generator (Fig. 3).

When using a cam wave generator with arcs of constant radius at the top of the wave, the width b of the narrow part of the grooves 5 in the undeformed

ring 4 can be determined from the co-50 between the flexible wheel and the generator

relationship

where is 3,14159;

k is the number of slots;

the number of teeth of the flexible wheel; the number of teeth of the hard wheel;

transmission module;

intermediate ring thickness;

groove depth;

thickness of the flexible wheel under the toothed crown;

the radius of the neutral line of the undeformed intermediate ring;

2 P sinp-cos; h h-h;

404

-dg- sin P jf cos p - 2 sin R;

where | 3 is the half angle of relief of the central angle bounding a portion of the flexible wheel of constant curvature.

The transmission works in the following way.

25 The generator 3 waves deforms the intermediate ring 4 and the flexible wheel 1 in the form of a double-top oval. Rotation of the 3-wave generator causes re-alignment of the teeth of the flexible wheel 1

30 with teeth of hard wheels 2 and 6. Since at least one of these wheels has a number of teeth different from the number of teeth of the flexible wheel 1, wheel 6 receives rotation. The intermediate ring 4 in its middle part rests on a single-sided flexible bearing 7. When the generator generates 3 waves, the width of the grooves made in the intermediate ring 4 is 5 times personal in different zones (FIGS. 3 and 4), which provides the ring 4 in the circumferential direction with flexural rigidity close to the bending stiffness of the flexible wheel 1.

35

45 Formula and 3 about b ete n and

A wave gear containing flexible and rigid wheels, a wave generator and an intermediate ring mounted

waves, characterized in that, in order to increase the transmission capacity of the transmission by improving the conditions of engagement across the width of the toothed rims of the wheels by increasing the flexural rigidity of the intermediate ring in the axial direction, the inner surface of the intermediate ring is uniformly spaced 313071274

The grooves along the circumference along the generatrix of the wheel under the toothed rim are grooved, and the thickness h of the intermediate collar is in accordance with the ratio h ca depending on the thickness h. flexible (3-15) h.

1

fig.d

Fy

Claims (1)

Claim A wave transmission comprising a flexible and rigid wheel, a wave generator and an intermediate ring mounted between the flexible wheel and the wave generator, characterized in that, in order to increase the transmission load capacity by improving the gearing conditions along the width of the gear rims of the wheels by increasing the bending stiffness of the intermediate ring in the axial direction, on the inner surface of the intermediate ring, uniformly arranged 3 1307127 the thickness h of the intermediate ring is in accordance with the ratio h = ta depending on the thickness h, _with flexibly = (3-15) h _{c <}