SU1244415A2 - Wave rack-and-gear drive with intermediate links in form of wedges - Google Patents

Description

The invention relates to mechanical engineering and can be used in drives for the translational movement of machines and equipment.

The purpose of the invention is to improve the transmission accuracy by reducing and stabilizing the shaft deflections.

FIG. 1 shows the transmission, longitudinal section; in fig. 2 - diagram of the interaction of wedges with the rack teeth.

Volnov Reyayay Transfer works as follows.

When the shaft 3 is rotated, the cams 4, interact with the wedges 2, mix them, ayut them in the slots of the body 5 in the direction of the rail 1 and back.

When the shaft 3 is rotated counterclockwise (FIG. 2), the wedges VII, IV, I are turned relative to each other by an angle

The transmission comprises a toothed rack 1 and 360 ° / z, moving towards the device for moving the wedges 2 to the orthorake 1. Pushing away from the slots of the housing 5

4 and diagonally to the rail 1, made in the form of a shaft 3 and flat cams placed along its axis 4. The profiles of adjacent cams 4 are rotated relative to each other by an angle φ K 360 ° / 7, where z is the number of cams 4 within the wavelength ( Fig. 2), the coefficient K is selected from the range of 2: K (-2).

The cams 4, successively rotated by an angle of fо 360 ° / z, are placed, taking into account the wavelength, at an equal distance tk from each other along the axis of the shaft 3, chosen according to the formula

(K ± 1 / z),

15

when interacting with cams koy 1, they move the latter to the right. At the same time, the wedges VI, III, X are moved downward, moving away from the rail 1 and all the time choosing a gap in the engagement. Wedges VIII, V, II, IX in this phase position of the shaft 3 are in the lower position that does not interfere with the movement of the rail 1.

20

In one revolution of the shaft, all the wedges 2 perform one cycle of reciprocating movement, and the rail 1 moves to the right by one step P.

This arrangement of the cams 4 on the shaft 25 allows to disperse the points of application of the radial forces acting on the shaft 3, to reduce its deformation and pulsation of the deflections in one turn.

where P is the pitch of the teeth of the rail (Fig. 2)

The wedge 2 is installed in the slots of the pus 5.

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Volnov Reyayay Transfer works as follows.

When the shaft 3 is rotated, the cams 4, interact with the wedges 2, mix them, ayut them in the slots of the body 5 in the direction of the rail 1 and back.

360 ° / z, moving in the direction of the rail 1. Push away from the slots of the housing 5

4 and rei

when interacting with cams koy 1, they move the latter to the right. At the same time, the wedges VI, III, X are moved downward, moving away from the rail 1 and all the time choosing a gap in the engagement. Wedges VIII, V, II, IX in this phase position of the shaft 3 are in the lower position that does not interfere with the movement of the rail 1.

In one revolution of the shaft, all the wedges 2 perform one cycle of reciprocating movement, and the rail 1 moves to the right by one step P.

This arrangement of the cams 4 on the shaft 3 makes it possible to disperse the points of application of the radial forces acting on the shaft 3, to reduce its deformation and pulsation of the deflections in one turn.

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(10) (9) (c)

Compiled by A. Razin

Editor E. KopchaTehred I. VeresKorrektor V. But ha

Order 3798/39 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

WAVE RACK TRANSMISSION WITH INTERMEDIATE LINKS AS WEDGES by author. St. No. 1043392, characterized in that, in order to increase transmission accuracy by reducing and stabilizing shaft deflections, the profiles of adjacent cams are rotated relative to each other at an angle φ = K 360 ° / ζ, where x is the number of cams within the wavelength, coefficient K is selected out of range 2 K (ζ - 2), and the cams sequentially rotated through an angle φο = 360 ° / размещ are placed taking into account the wavelength at an equal distance U from one another along the shaft axis, selected by the formula f / t = P (K ± l / z) where P is the pitch of the teeth of the rack. simsi ns figure 1> NO