SU1229507A1 - Mechanism for converting motion - Google Patents

Description

The invention relates to mechanical engineering and can be used in mechanisms for converting movement.

The purpose of the invention is the reliability of the engagement.

FIG. Figure 1 shows the mechanism with involute gearing, search species; in fig. 2. - output of the upper tooth of the sector from engagement tangentially to the tooth of the upper rail and the contact of the lower tooth of the sector with the lower rail of the rod; in fig. 3, the dotted line shows the kraying of the last tooth of the sector, as well as the rack; in fig. 4 and 5 are intermediate positions of the motion conversion mechanism; in fig. 6 and 7 - mechanism with cycloidal engagement, general view; in fig. 8 is a two-conversion conversion mechanism for large alternating loads with adjustable mutual arrangement of the rails and PRINK compensation.

The motion conversion mechanism contains a drive shaft 1 with a fixed toothed sector 2, the number of teeth of which is determined by the formula Z,

Zc

 m 1 TTTo 7 - 2

NUMBER OF TEETH

sector, the number of teeth of a full gear, and depends on the ratio of the gear teeth. In the simplest case (since the number of teeth to be clear on the gear wheel, the diametrically opposite teeth are sewn first and then exactly half of the remaining teeth are milled.

The drive shaft is installed in the splices 3. The stem 4 is located in the subfolds 5. The stem in the central part goes into two parallel-toothed rails 6, which are rigidly interconnected. The number of teeth on gear racks is equal to half the number of teeth of a full gear. The active surfaces of the first and last teeth of the sector are cut from the circumference of the projections to the circumference of the depressions or from the main circumference of the depressions, and the overlap coefficient is less than or equal to one.

The axial displacement of the rails is provided with the aid of a p7 pin fixed with a pin 8 and an adjusting screw tsar 9. To perceive one 2295072

physical loads on the fingers installed spacer springs 10.

An adjusting nut 11 has been installed to select the gear backlash and adjust the smooth interlocking of the sector from one rail to another. Support rollers 12 are installed for orientation of the rod in reciprocating motion. For 10 stem communication with the openable leaf

MI, for example, a chassis with oscillating interceptors, etc., at its end is located node 13 to the drive unit of the aircraft. The drive shaft is rotated from an electric motor, hydraulic motor, etc.

The rails of the rod 14 and the sector 15 may have a cyclic gear. In this case, the cylindrical fingers 16 are installed on the rail. 1 / 1l of reduced friction in the gearing is attached to the sleeves 17. To adjust the adjustment C, the relative position of the racks is determined by the fixing screws 18.

The dvilseni conversion mechanism works as follows.

With the help of an electric motor or hydraulic motor, the first shaft 1 is driven into rotation, the gear sector 2, rigidly fixed on it, starts moving along the arrow (Fig. 1). At the same time, the last tooth A of the sector leaves the gearing with the tooth of the upper rail (tangentially) without moving it, and the first tooth

sector

makes contact with the first tooth of the bottom rail. The tooth of the sector is corrected and pinched in such a way that the sector leaves the engagement with the upper rail and the beginning of the engagement with the nuclide occurs synchronously without moving the stem. The dead point of the rod is the moment of contact (Fig. 2) with the first tooth B of the lower reiki sector during the sliding of the upper tooth A of the sector over the tooth of the upper reiki.

50

55

After moving the dead point, the toothed sector rolls on the bottom rail, moving it to the right. Then comes the left dead point. The motion of the toothed sector is absolutely similar to the first dead center (Fig. 5). The sector then rolls over the top rail and re-rotates the rod to the left.

The engagement may have a cycloidal tooth shape (Fig. 6 and 7). To reduce friction, the reiki tooth in this case has a sleeve.

In order to increase the smoothness of the play, the play of backlash in the gearing and the adjustment of the travel accuracy in the dead points of the rail can be interconnected with the help of fingers. A screw 9 with a nut 11 allows adjustment of the relative position of the rails. Springs 10 provide smoothness.

229507 4

stroke and constant load on the tooth, reducing dynamic stresses and eliminating possible backlash.

5 As the driving link of the mechanism, the stem 4 (node 13) can be used. In this case, shaft 1 becomes the driving link to it. A flywheel 19 is installed to increase the moment of inertia of the output link and the passage of the dead points of the mechanism.

FIG. 2

FIG. 3

Sv

FIG.

13

Sh

5

FIG. 6

13

FIG. eight

Editor N. Dankulich

Compiled by P, Ozhina

Tehred M. Khodani with Proofreader V. Sinitska

Order 2438 / 36Tirals 880 Subscription

VNIIPI USSR State Committee

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

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

Claims (1)

MOVEMENT FOR TRANSFORMATION OF MOTION, comprising a housing, ..... ·· ../ '/ two cogged Gyo'-rails embedded in it and a wheel interacting with them, made in the form of a gear sector, characterized in that, for the purpose of reliable engagement, the gear racks are displaced axially relative to each other half the distance between their teeth, the active surfaces of the first and last teeth of the sector are cut from the circumferences of the protrusions to the circumference of the cavity or from the main circumference of the cavities, and the overlap coefficient of these teeth is chosen to be less than or equal to unity. _from S5 SU, „, 1229507 FIG. ϊ