CN107165986A - Reductor cyclo drive mechanism based on tapper part - Google Patents

Abstract

The invention discloses a cycloidal transmission mechanism of a reducer based on rolling cones, which includes a cycloidal disc, a transmission part and an output disc. The rotating body obtained by rounding the corners according to the radius r and then rotating one round along its longitudinal diagonal, the output disk is provided with rolling cone fixing holes evenly distributed on the circumference, and the number of rolling cones is the same as that of rolling cones. The fixing hole of the cone is consistent, the fixing hole of the rolling cone is suitable for the shape and size of one end of the longitudinal diagonal direction of the rolling cone, and the cycloidal track is arranged on the disk surface of the cycloidal disk corresponding to the side of the output disk One side of the rolling cone along its long axis direction is embedded and fixed in the rolling cone fixing hole, and the other side of the rolling cone along its long axis direction is aligned with the cycloid track of the cycloid disk Groove sliding movable joint. The invention has the advantages of high transmission power and little wear on the cycloid groove.

Description

Cycloid transmission mechanism of reducer based on rolling cone

technical field

The invention relates to a component of a reducer, in particular to a cycloidal transmission mechanism of a reducer based on rolling cones.

Background technique

Due to the advantages of large reduction ratio and small size, cycloidal pin gear reducer gradually replaces gear reducer and worm reducer, and is widely used in speed and torque conversion equipment as a driving or reducing device.

Cycloidal pin gear reducer is a novel transmission device that applies the principle of planetary transmission and adopts cycloid pin-tooth meshing. The contact surface movement process is in the form of high load movement, so it is easy to cause wear. Moreover, its structure is complex, the processing precision is high, and a certain process gap must be left during the design and installation process, resulting in unsteady rotation, high noise, and low rotation efficiency during work. Therefore, it is necessary to propose a new type of cycloid reducer. machine to solve the above problems.

In the prior art, compared with the traditional cycloidal pinwheel reducer, the cycloidal ball reducer based on spherical balls has made great progress in transmission accuracy and other aspects. The patent publication number is CN106352043A "follow-up drive reducer".

However, the follow-up drive reducer of this scheme is based on the transmission scheme of spherical balls, and the following problems still exist:

1. The spherical transmission torque reduces the transmission power;

2. Through mechanical analysis, it is known that the force transmission between the ball and the cycloid groove is mainly concentrated at the edge of the groove, and the ball moves in the groove, the result is that the wear at the edge of the groove and the wear of the ball are large.

3. The cycloid groove is where the reducer and its important core technology are concentrated. If it wears out prematurely, it will increase the noise of the reducer, reduce the transmission power and shorten the service life.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a cycloidal transmission mechanism of a reducer based on rolling cones, which has high transmission power and little wear on the cycloid track groove.

In order to achieve the above object, the technical solution of the present invention includes a cycloidal disc, a transmission member and an output disc, the center of the cycloidal disc is provided with an input shaft installation hole, and the output disc now has an output shaft installation hole, which It is characterized in that: the transmission part is a rolling cone, and the rolling cone is a rotating body obtained by rounding the four corners of a rhombus quadrilateral according to the radius r and then rotating one round along its longitudinal diagonal. The output disc is a The surface of the side plate is provided with rolling cone fixing holes evenly distributed around the circumference, the number of rolling cones is consistent with the fixing holes of rolling cones, and the fixing holes of rolling cones are consistent with the outer surface of one end of the rolling cone along its longitudinal diagonal direction. The shape and size of the cycloidal disc are matched with the size of the profile. The cycloidal track groove on the side of the cycloidal disc corresponding to the output disc is provided with a cycloidal track groove. The movable slot of the rolling cone is adapted to the size of the outer shape of one end of the rolling cone along its longitudinal diagonal direction, and the number of teeth Z1 of the moving slot of the rolling cone is less than the number Z2 of the rolling cone;

One side of the rolling cone along its longitudinal diagonal direction is embedded and fixed in the fixing hole of the rolling cone, and the other side of the rolling cone along its longitudinal diagonal direction is connected to the cycloid of the cycloid disk. Track groove slip guide movable joint.

The further setting is that the number of teeth Z1 of the active slot of the rolling cone and the number Z2 of the rolling cone satisfy the following equation:

Z2 = Z1 + 1.

It is further provided that the cone angle a of the rolling cone is: 19°<a<121°.

It is further provided that the length of the horizontal diagonal of the rolling cone is d, the length of the longitudinal diagonal is c, and the c/d=1.2-3.

It is further provided that the ratio of the chamfer radius r to the length d of the transverse diagonal line is: 2*r/d<0.5.

It is further provided that the shape of the cross-section of the movable slot of the rolling cone is: the apex of the isosceles triangle is rounded according to the radius r.

The innovative mechanism and advantages of the present invention are: the rolling cone is used to replace the circular ball, and the two sides of the rolling cone along its longitudinal diagonal direction are respectively force-fitted with the fixing hole of the rolling cone and the cycloid track groove, Compared with spherical balls, its force-bearing contact area is larger, so it can adapt to higher transmission power. In addition, this structure increases the contact area between the rolling cone and the cycloid track groove during the sliding rotation process, so that Mechanically, the transmitted force will not be concentrated at the edge of the cycloid track groove, thereby reducing its wear, improving its service life, and effectively reducing noise.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, obtaining other drawings based on these drawings still belongs to the scope of the present invention without any creative effort.

Figure 1 is a perspective view of a specific embodiment of the present invention;

Fig. 2 Schematic diagram of the semi-major and semi-minor axes of the rolling cone.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The terms of direction and position mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom" ", "side", etc., are only referring to the direction or position of the drawings. Therefore, the terms used in direction and position are used to explain and understand the present invention, but not to limit the protection scope of the present invention.

As shown in Figures 1 to 2, in the embodiment of the present invention, a cycloidal transmission mechanism of a reducer based on rolling cones includes a cycloidal disc 1, a transmission member and an output disc 3, and the cycloidal disc The center of 1 is provided with an input shaft installation hole 11, which is used for the input installation of the input shaft of the reducer, and now there is an output shaft installation hole 31 in the output disk 3, which is used for the installation of the output shaft of the reducer. Cone 2, the rolling cone is a rotating body obtained by rounding the four corners of a rhombus quadrilateral according to the radius r and then rotating one round along its longitudinal diagonal. See Figure 2 for the longitudinal section profile of the rolling cone, The length of the transverse diagonal of the rolling cone is d, the length of the longitudinal diagonal is c, the c/d=1.2-3, the cone angle a of the rolling cone is: 19°< a <121° , the ratio of the chamfer radius r to the length d of the transverse diagonal line is: 2r/d<0.5.

In addition, one side of the output disc 3 described in this embodiment is provided with rolling cone fixing holes 32 uniformly distributed around the circumference, the number of rolling cones 2 is consistent with the rolling cone fixing holes 32, and the rolling cone fixing holes 32 is adapted to the shape and size of one end of the rolling cone 2 in the longitudinal diagonal direction. The cycloidal track groove 12 is arranged on the disk surface of the cycloidal disk 1 corresponding to the output disk side. The cycloidal track groove 12 It includes a plurality of evenly spaced rolling cone parts movable sockets 121, the rolling cone part movable sockets 121 are adapted to the shape and size of one end of the rolling cone part 2 in the longitudinal diagonal direction, and the rolling cone part movable sockets The number of teeth Z1 of the groove is less than the number Z2 of the rolling cone parts, for example Z2 = Z1 + 1; specifically, taking the reduction ratio of 1/40 as an example, the number of rolling cone parts 2 is 40, and the number of rolling cone moving slots 121 is 39 . One side of the rolling cone part 2 described in this embodiment is embedded and fixed in the rolling cone part fixing hole 32 along its long axis direction, and the other side of the rolling cone part 2 along its long axis direction is connected to the cycloidal disc. The cycloidal track groove 12 is slidingly and movablely connected.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (6)

1. a kind of reductor cyclo drive mechanism based on tapper part, includes cycloid disc, driving member and output panel, described pendulum Drum is provided centrally with input shaft mounting hole, output panel now with for output shaft mounting hole, it is characterised in that：Described Driving member is tapper part, and the tapper part is that four angles of rhombic quadrangles carry out rounding angle again along its longitudinal diagonal rotation by radius r Circumference uniform distribution is provided with rotary body obtained by circling, described output panel side card and is provided with tapper part fixing hole, is rolled The quantity for boring part is consistent with tapper part fixing hole, along its longitudinal diagonal one end on tapper part fixing hole and tapper part Outline shape size is adapted, and is provided with cycloidal path groove in the card of the corresponding output panel side of described cycloid disc, the cycloid Track groove includes the movable caulking groove of multiple tapper parts uniformly at intervals, and tapper part activity caulking groove and tapper part are along its longitudinal diagonal The outline shape size of direction one end is adapted, and the tooth number Z 1 of tapper part activity caulking groove is less than the quantity Z2 of tapper part；

Side setting-in of the described tapper part along its longitudinal diagonal is fixed on tapper part fixing hole, described tapper part edge The opposite side of its longitudinal diagonal and the cycloidal path groove sliding guiding of cycloid disc are actively coupled.

2. a kind of reductor cyclo drive mechanism based on tapper part according to claim 1, it is characterised in that：Tapper part The tooth number Z 1 of movable caulking groove and the quantity Z2 of tapper part meet below equation：

Z2 = Z1 + 1。

3. a kind of reductor cyclo drive mechanism based on tapper part according to claim 1, it is characterised in that：Described The coning angle a of tapper part is：19°< a < 121°.

4. a kind of reductor cyclo drive mechanism based on tapper part according to claim 1 or 2 or 3, it is characterised in that： The horizontal catercorner length of described tapper part is d, and longitudinal catercorner length is c, described c/d=1.2-3.

5. a kind of reductor cyclo drive mechanism based on tapper part according to claim 4, it is characterised in that：Described The ratio that chamfer radius r is d with horizontal catercorner length is：2*r/d <0.5 .

6. a kind of reductor cyclo drive mechanism based on tapper part according to claim 1, it is characterised in that：Described Tapper part activity caulking groove section is shaped as：The drift angle of isosceles triangle carries out rounding angle by radius r.