MD616Z

MD616Z - Axial harmonic reducer

Info

Publication number: MD616Z
Application number: MDS20120069A
Authority: MD
Inventors: Ион ДОХОТАРУ
Original assignee: Технический университет Молдовы
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2013-10-31
Also published as: MD616Y

Abstract

The invention relates to the field of motor car construction, particularly to mechanical transmissions.The axial harmonic reducer includes a body (2), in which are made axial holes, placed round the circle, coaxial with the axis of the reducer, in each being freely installed pushers (3), one end of which is made in the shape of tooth. The reducer further contains a drive shaft (4) with a cam (5), on which is placed a sliding ring (6) with spherical sockets on the front side, axially fixed with a ring (7), as well as a driven wheel (1), made with the front gear ring, with which intermesh the teeth of the pushers (3), the opposite end of which is made spherical. On the cylindrical part of the pushers (3) is made an annular groove and a cut. The spherical ends of the pushers (3) are embedded into the spherical sockets of the sliding ring (6). The sliding ring (6) and the pushers (3) are fixed with a separator (8) so that together they form a flexible sliding gearwheel with sliding teeth. In the body (2) is fixed a polyhedral plate (9), each face of which is in contact with the cut of the pushers (3) to prevent their rotation. Between the cut of the pushers (3) and the faces of the polyhedral plate (9) is provided a clearance. The number of pushers (3) differs from the number of teeth of the driven wheel (1).

Description

Invenţia se referă la domeniul construcţiei de maşini, în special la transmisii mecanice. The invention relates to the field of machine construction, in particular to mechanical transmissions.

Se cunoaşte transmisia armonică cu corpuri intermediare radiale, care conţine un arbore conducător şi un arbore condus amplasaţi coaxial, o roată dinţată cu dinţi interiori, o camă fixată pe arborele conducător, o casetă cu canale radiale fixată pe arborele condus şi tacheţi cu un dinte la un capăt, dispuse în canalele casetei şi legate flexibil cu cama. Numărul de tacheţi diferă de numărul de dinţi ai roţii dinţate [1]. The harmonic transmission with radial intermediate bodies is known, which contains a coaxially arranged driving shaft and a driven shaft, a gear with internal teeth, a cam fixed on the driving shaft, a cassette with radial channels fixed on the driven shaft and cams with a tooth at one end, arranged in the channels of the cassette and flexibly connected to the cam. The number of cams differs from the number of teeth of the gear [1].

Dezavantajele soluţiei apropiate constau în dimensiunile de gabarit mari, complexitatea constructivă şi tehnologică. The disadvantages of the close solution consist of large overall dimensions, constructive and technological complexity.

Problema pe care o rezolvă invenţia este simplificarea construcţiei şi reducerea gabaritelor. The problem that the invention solves is the simplification of the construction and the reduction of the dimensions.

Reductorul armonic axial, conform invenţiei, înlătură dezavantajele menţionate mai sus prin aceea că conţine un arbore conducător cu o camă, tacheţi, unul dintre capetele cărora este executat în formă de dinte, o roată condusă, totodată numărul de tacheţi diferă de numărul de dinţi ai roţii conduse. Reductorul mai conţine un corp, în care sunt executate alezaje axiale, dispuse pe o circumferinţă, coaxial cu axa reductorului, în fiecare fiind instalaţi liber tacheţii. Pe camă este amplasat un inel glisant cu locaşe sferice pe partea frontală, fixat axial cu un inel. Roata condusă este executată cu coroană dinţată frontală, cu care angrenează dinţii tacheţilor, totodată capătul opus al acestora este executat sferic. Pe partea cilindrică a tacheţilor este executat un canal inelar şi o aplanare. Capetele sferice ale tacheţilor sunt introduse în locaşele sferice ale inelului glisant. Inelul glisant şi tacheţii sunt fixaţi cu o colivie astfel că împreună formează o roată dinţată flexibilă cu dinţi glisanţi. În corp este fixată o placă poliedrică, fiecare latură a căreia contactează cu aplanarea tacheţilor pentru a împiedica rotirea acestora. Între aplanarea tacheţilor şi laturile plăcii poliedrice este prevăzut un interstiţiu. The axial harmonic reducer, according to the invention, eliminates the above-mentioned disadvantages by containing a driving shaft with a cam, cams, one of the ends of which is made in the form of a tooth, a driven wheel, at the same time the number of cams differs from the number of teeth of the driven wheel. The reducer also contains a body, in which axial bores are made, arranged on a circumference, coaxial with the axis of the reducer, in each of which cams are freely installed. A sliding ring with spherical recesses on the front side is placed on the cam, axially fixed with a ring. The driven wheel is made with a front toothed crown, with which the teeth of the cams mesh, at the same time their opposite end is made spherical. An annular groove and a flattening are made on the cylindrical side of the cams. The spherical ends of the cams are inserted into the spherical recesses of the sliding ring. The sliding ring and the cams are secured with a cage so that together they form a flexible gear with sliding teeth. A polyhedral plate is secured in the body, each side of which contacts the cam face to prevent rotation. A gap is provided between the cam face and the sides of the polyhedral plate.

Avantajul invenţiei constă în posibilitatea realizării unui reductor de gabarite mici cu o formulă constructivă simplă şi compactă. The advantage of the invention lies in the possibility of creating a small-sized reducer with a simple and compact construction formula.

Invenţia se explică prin desenele din fig. l - 3, care reprezintă: The invention is explained by the drawings in Fig. 1 - 3, which represent:

- fig. 1, vederea frontală a reductorului, în secţiune; - Fig. 1, front view of the reducer, in section;

- fig. 2, secţiunea A - A din fig. 1; - Fig. 2, section A - A of Fig. 1;

- fig. 3, forma constructivă a unui tachet. - Fig. 3, the constructive form of a cleat.

Reductorul conţine un arbore conducător 4 (fig.1) cu o camă 5 frontală, tacheţi 3, un capăt al cărora este executat în formă de dinte şi o roată condusă 1. Reductorul mai conţine un corp 2, în care sunt executate alezaje axiale, dispuse pe o circumferinţă, coaxial cu axa reductorului, în fiecare fiind instalaţi liber tacheţii 3 (fig. 2). Pe cama 5 este plasat un inel glisant 6 cu locaşe sferice pe partea frontală, fixat axial cu un inel 7. Roata condusă 1 este executată cu coroană dinţată frontală, cu care angrenează dinţii tacheţilor 3, totodată capătul opus al acestora este executat sferic. Pe partea cilindrică a tacheţilor 3 (fig.3) este executat un canal inelar şi o aplanare. Capetele sferice ale tacheţilor 3 sunt introduse în locaşele sferice ale inelului glisant 6. Inelul glisant 6 şi tacheţii 3 sunt fixaţi cu o colivie 8 astfel că împreună formează o roată dinţată flexibilă cu dinţi glisanţi. În corpul 2 este fixată o placă poliedrică 9, fiecare latură a căreia contactează cu aplanarea tacheţilor 3 pentru a împiedica rotirea acestora. Între aplanarea tacheţilor 3 şi laturile plăcii poliedrice 9 este prevăzut un interstiţiu. Numărul de tacheţi 3 diferă de numărul de dinţi ai roţii conduse 1. The reducer contains a driving shaft 4 (fig. 1) with a front cam 5, cams 3, one end of which is made in the form of a tooth, and a driven wheel 1. The reducer also contains a body 2, in which axial bores are made, arranged on a circumference, coaxial with the axis of the reducer, in each of which cams 3 are freely installed (fig. 2). A sliding ring 6 with spherical recesses on the front side is placed on the cam 5, axially fixed with a ring 7. The driven wheel 1 is made with a front toothed crown, with which it meshes with the teeth of the cams 3, at the same time their opposite end is made spherical. An annular groove and a flattening are made on the cylindrical side of the cams 3 (fig. 3). The spherical ends of the cams 3 are inserted into the spherical recesses of the sliding ring 6. The sliding ring 6 and the cams 3 are fixed with a cage 8 so that together they form a flexible gear wheel with sliding teeth. A polyhedral plate 9 is fixed in the body 2, each side of which contacts the flattening of the cams 3 to prevent their rotation. A gap is provided between the flattening of the cams 3 and the sides of the polyhedral plate 9. The number of cams 3 differs from the number of teeth of the driven wheel 1.

Reductorul armonic axial funcţionează în felul următor. The axial harmonic reducer works as follows.

La rotirea arborelui conducător 4 şi a camei 5 frontale inelul glisant 6 efectuează o mişcare glisantă axială deplasând tacheţii 3, care consecutiv pe parcursul unei rotaţii a camei 5 intră şi se retrag din angrenarea cu dinţii coroanei dinţate frontale a roţii conduse 1. When the driving shaft 4 and the front cam 5 rotate, the sliding ring 6 performs an axial sliding movement, moving the cams 3, which consecutively during one rotation of the cam 5 enter and withdraw from engagement with the teeth of the front gear crown of the driven wheel 1.

1. SU 632859 A1 1978.11.15 1. SU 632859 A1 1978.11.15

Claims

Axial harmonic reducer, which contains a driving shaft (4) with a cam (5), cams (3), one of the ends of which is made in the shape of a tooth, a driven wheel (1), at the same time the number of cams differs from the number of teeth of the driven wheel (1), characterized in that it also contains a body (2), in which axial bores are made, arranged on a circumference, coaxial with the axis of the reducer, in each of which cams (3) are freely installed; on the cam (5) is placed a sliding ring (6) with spherical recesses on the front side, axially fixed with a ring (7); the driven wheel (1) is made with a front toothed crown, with which it meshes the teeth of the cams (3), at the same time their opposite end is made spherical; on the cylindrical side of the cams (3) an annular channel and a flattening are made; the spherical ends of the cams (3) are inserted into the spherical seats of the sliding ring (6); the sliding ring (6) and the cams (3) are fixed with a cage (8) so that together they form a flexible gear wheel with sliding teeth; a polyhedral plate (9) is fixed in the body (2), each side of which contacts the flattening of the cams (3) to prevent their rotation; a gap is provided between the flattening of the cams (3) and the sides of the polyhedral plate (9).