SU1252579A1 - Gearing for converting continuous rotary motion to stepped rotary motion - Google Patents

Description

one

The invention relates to mechanical engineering and can be used, for example, for driving stepper conveyors, devices for automatic feeding of workpieces and other machines where it is required to provide stepping rotational movement and long stops of output links.

The purpose of the invention is to expand the operational capabilities of gear mechanisms.

FIG. 1 shows a gear mechanism for converting a continuous rotation into a stepping rotary motion, a review view; in fig. 2 is a section A-A in FIG. 1i in FIG. 3 - one And) provisions of the mechanism in which the stepped rotation of the output link.

A gear mechanism for converting the movement of the rail 6, the axis 13 of its lemi of continuous rotation into a stepping rotary movement includes a housing 1 in which a shaft 2 is placed, a disk 3 with a finger mounted on it

4. On disc 4, guides are made.

5, in which the figure rail 6 is moved, having straight line 7 and circular 8 sections. In the rail 6, a groove 9 is made, with which the finger 4 of the disk 3 interacts. The rail 6 is driven by a gear 10 mounted on the drive shaft 11. The stepping rotational movement of the disk 3 is transmitted to the output link 12. The groove 9 of the rail 6 is full so that ensures the coincidence of the axes 1 3 of the circular sections 8 of the rail 6 with the fixed axis 14 of the shaft 2 in the extreme positions of the rail 6,

A gear mechanism for converting a continuous rotation into a stepping rotary motion operates as follows.

With continuous rotation of the gear 10 in the direction indicated by the arrow - 45 operational features of the mechanism.

252579

which

, its teeth are successively engaged with the rectilinear 7 and 8 circular portions of the figured staff 6, which makes a reciprocating motion relative to the disk 3 and rotates together with the disk 3 relative to the fixed axis 14.

The interaction of the gear 10 with the straight-line sections 7 of the rack 6 causes its straight-line movement to the right, while the disk 3 is fixed. Angle of height H (gear angle

10, which corresponds to the stop of the disk 3) depends on the length t of the straight section 15 and the radius R of the pitch circle of gear 10 and is determined by the formula 180 t / Tt R (in this mechanism M j can reach 720 or more). At the end of

first circular section 8 coincides with the fixed axis 14 of the shaft 2 and the gear 10 begins to interact with the specified section, i.e. as if two cogged wheels with fixed axles are engaged, the rail 6 rotates 180, turning the disk 3 and the output link 12 with a certain angle. Then the cycle repeats.

The mechanism permits rotation of the output link 12 to different angles. For this, the disk 3 and the output link 12 are in the form of gear wheels.

The rotation angle of the output link 12 is equal to

Z3

H 180 2 ,,

where Zj and Z are the number of teeth of the corresponding gears.

This property, as well as the possibility of reversal, increases bcAiA.

Fig z

FIG. one

Editor A. Shandor

F1L.

Compiled by S. Andreev Tehred O. Gortvay

Order 4609/39 Circulation 880

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5

Production and printing company, Uzhgorod, st. Design, And

Proofreader V. Sinitska

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Claims (1)

GEAR MECHANISM FOR CONVERSION OF CONTINUOUS ROTATION IN A STEP-BY-STEP ROTARY MOTION, comprising a housing, drive and driven shafts, guides, a figured rail having straight and circular sections and moving in the rails, and a gear wheel mounted on the drive shaft and interacting with the rack, characterized in that, for the purpose of expansion operational capabilities, the mechanism is equipped with a disk with a finger mounted on the driven shaft, in a rail parallel to one of the straight sections, a groove is made that interacts with the disk’s edge, and the guides are made in the disk.