SU1328620A1 - Mechanism for converting rotary motion to reciprocating motion - Google Patents

Abstract

The invention relates to mechanical engineering. The purpose of the invention is to expand the kinematic capabilities, reliability and durability of the mechanism by increasing the stroke length and eliminating the extrusion of lubricant from the tube. To this end, the tube I of the mechanism in which the balls 7 and the sleeves 8 are strung onto the cable has a longitudinal slot through which the cable communicates with the movable object 16. To prevent the lubricant from being squeezed when the object 16 is moved, the cut of the tube 1 is covered with a flexible tape placed in guides, and its ends are fixed on the axles of the drums 2 attached to the guides. The drive mechanism is made in the form of an axis 4 with a core 5 with a helical groove in which a cable is laid, a sleeve 9 installed on it with a screw through slot and two gear coupling halves, one of which is movable along the axis 4 and has a protrusion 11 on the inner surface mounted in a screw slot of the sleeve 9 and connected to the end of the cable. When the leading half coupling 17 rotates, the coupling half coupling 12 performs a reciprocating change and, with its protrusion 11 placed in the screw groove of the sleeve 9, interacts with the cable, together with the latter and the object 16, translational movement. 1 hp f-ly, 5 ill. (O (L o w oo O5 1C

Description

The invention relates to mechanical engineering and can be used in automatic machines or manipulators for connecting power mechanisms with controlled objects, as well as for moving objects along straight and curvilinear trajectories in the forward and reverse directions.

The purpose of the invention is to expand the kinematic capabilities, increase the reliability and durability of the mechanism by increasing the stroke length and eliminating the E; L- pressure of lubricant from the tube.

FIG. I depicts the mechanism, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows the node I in FIG. one; in fig. 4 shows a section BB in FIG. one; in fig. 5 — node AND in FIG. one.

The mechanism for converting rotational motion into reciprocating consists of a tube 1 calibrated with a longitudinal slit, to which two drums 2, two guides 3 are attached, and a drive, on axis 4, which is fixed a core 5 with a helical groove in which a cable 6 is laid with balls 7 strung on it and sleeves 8.

To increase the reliability and durability of the mechanism, the cable with balls and bushings strung on it is abundantly lubricated with grease.

To prevent the cable from pulling up, it is closed by a fixed sleeve 9 with a screw through slot, the pitch of which coincides with the pitch of the screw groove of the core. One cable lug 10 by means of a protrusion 11 interacts with a driven coupling half movable along the axis, and the other tip 13 interacts through an aperture 14 through an aperture and a flexible tape 15 with an adjustable object 16. The main coupling half 17 is mounted n; j bearings 18.

The mechanism works as follows.

When rotating the leading coupling half 17, the driving coupling half coupling 12 performs a rotational-translational motion. In this case, the protrusion 11 affects the packer 10 tro

Sik biv depending on the direction of rotation of the leading half-coupling forces perceive either balls 7 with bushings 8 or cable 6, making a translational motion, which is transferred by means of bracket 14 to the controlled object 16. When the object is moved, the flexible strip 15 moves, depending on the direction of rotation. the object is unwound from one reel 2 and wound onto another. To avoid cases of tape heaving, it moves in two guides 3, which are rigidly fixed on tube 1. If it is necessary to move the object along a curved path, tube I is bent accordingly.

Claims (2)

Invention Formula 0 five 0 0 I. The mechanism for converting rotation, movement into reciprocating, containing a drive and a tube connected to it, in which a cable is placed with sequentially strung on some balls and bushings, revealing that, in order to expand kinematic capabilities, increase reliability and durability, the tube has a longitudinal slot, the drive is made in the form of a fixed axis with a core having a helical groove, a fixed sleeve having a through screw slot and two toothed coupling halves installed on it The bottom of which is movable in the axial direction and has a protrusion on the inner surface, which is placed in the vertical slot, and the cable is laid in the helical groove of the core and 5 ends are attached to the protrusion. 2. The mechanism according to claim 1, characterized by the fact that it is provided with two guides, located on both sides of the longitudinal slot, spaced in the guides and facing the longitudinal slot with a flexible tape and two drums fixed on the directions affixed tapes tape. duffA US.3 6-5 Fi..5 WITH: Editor I. Tu PinaTechp Order 3471/4 GTN | but VIIIG1N State Committee -. 1 13035, Moscow, Zh-Penzvodstvennns-polygraphic tav tg or C). Klimov d. I. Bept c Corrector. Beek;:: ; Si iSubscribe I G.SLL-1u cases of inventions and discoveries 5, G aunk can nab. D. 4/5 Redpri yew, Uzhgoro.a, yj ;. Project, 4