CN210686869U - Differential cycloid speed variator - Google Patents
Differential cycloid speed variator Download PDFInfo
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- CN210686869U CN210686869U CN201920957603.9U CN201920957603U CN210686869U CN 210686869 U CN210686869 U CN 210686869U CN 201920957603 U CN201920957603 U CN 201920957603U CN 210686869 U CN210686869 U CN 210686869U
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Abstract
The utility model relates to the technical field of mechanical transmission, in particular to a differential cycloid speed changing device, which comprises a cycloid disc, wherein a surface A and a surface B of the cycloid disc are respectively provided with a plurality of first balls and second balls which are distributed along the circumferential direction, an installation cavity for installing the cycloid disc is arranged on a machine body of the speed changing device, wherein the cycloid disc is eccentrically driven by an input shaft in the speed changing device, a first cycloid groove and a plurality of first ball fixing holes which are distributed along the circumferential direction are arranged between the surface A of the cycloid disc and the opposite surface of the installation cavity which is opposite to the surface A, a second cycloid groove and a plurality of second ball fixing holes which are distributed along the circumferential direction are arranged between the surface B of the cycloid disc and an output shaft of the speed changing device, the first balls are arranged between the first cycloid groove and the first ball fixing holes, and the second balls are arranged between the second cycloid groove and the second ball fixing holes to enable the cycloid disc to do cycloid movement, the output shaft is driven by a cycloid disc, and the number of tooth profiles of the first cycloid groove is smaller than or larger than that of the second cycloid groove.
Description
Technical Field
The utility model relates to a mechanical transmission technical field, especially a carry out modified differential cycloid speed change gear to prior application "vector cycloid speed change unit".
Background
At present, a transmission device applied to a precision servo mechanism of a robot, a precision machine tool, aerospace and the like is required to have the characteristics of high transmission precision, high transmission rigidity, large transmission ratio, high transmission efficiency, small volume, light weight, small transmission return difference, small rotational inertia of a rotating part and the like. The technical scheme is that when the cycloidal disk is used, an input structure and an output structure need to be additionally connected, so that the problem of small transmission exists, and the volume of the combined general input structure and output structure and the speed change unit is large.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiencies of the prior art, the present invention provides a differential cycloidal transmission having a high or low transmission ratio.
In order to realize the purpose, the utility model discloses a technical scheme is: a differential cycloid speed change device comprises a cycloid disc, wherein the two axial end faces of the cycloid disc are respectively an A face and a B face, the A face of the cycloid disc is provided with a plurality of first balls distributed around the circumferential direction, the B face of the cycloid disc is provided with a plurality of second balls distributed around the circumferential direction, a mounting cavity for mounting the cycloid disc is arranged on a machine body of the speed change device, the cycloid disc is eccentrically driven by an input shaft in the speed change device, a first cycloid groove and a plurality of first ball fixing holes distributed around the circumferential direction are arranged between the A face of the cycloid disc and the opposite face, opposite to the A face, on the mounting cavity, a second cycloid groove and a plurality of second ball fixing holes distributed around the circumferential direction are arranged between the B face of the cycloid disc and an output shaft of the speed change device, the first balls are arranged between the first cycloid groove and the first ball fixing holes, and the second balls are arranged between the second cycloid groove and the second ball fixing holes, so that the cycloid disc moves, the output shaft is driven by a cycloid disc, and the number of tooth profiles of the first cycloid groove is smaller than or larger than that of the second cycloid groove.
Among the above-mentioned technical scheme, the profile ratio value of first cycloid groove and second cycloid groove is different, and the drive ratio of variable speed is also different, and when the position that first cycloid groove and first ball fixed orifices and second cycloid groove and second ball fixed orifices set up was different, its relative direction of rotation of input and output also can change, and the profile number of first cycloid groove can be less than the profile number of second cycloid groove, also can be greater than the profile number of second cycloid groove.
As the utility model discloses a further setting, the quantity of first ball is 1 more than the profile number of first cycloid groove, and the quantity of second ball is 1 more than the profile number of second cycloid groove.
In the above technical solution, the difference between the number of the first balls and the number of the tooth profiles of the first cycloid groove is preferably 1, the difference between the number of the second balls and the number of the tooth profiles of the second cycloid groove is also 1, of course, the number of the first balls may be 1-n more than the number of the tooth profiles of the first cycloid groove, the number of the second balls may be 1-n more than the number of the tooth profiles of the second cycloid groove, where the diameters of the first balls and the second balls are not limited, and the diameters of the first balls and the second balls may be the same or different.
As a further setting of the utility model, the organism includes shell and apron, and first pendulum line groove or first ball fixed orifices set up on the apron.
Among the above-mentioned technical scheme, the organism is the structure that the looks closed and set up, and easy to assemble like this, detachable fasteners such as shell and apron accessible screw are connected, and the shell also can be a plurality of parts and constitute certainly.
As a further setting of the utility model, first cycloid groove sets up on the apron opposite face relative with the A face of cycloid dish, and first ball fixed orifices sets up on the A face of cycloid dish, second cycloid groove sets up on the B face of cycloid dish, and second ball fixed orifices sets up on the opposite face that the B face of output shaft and cycloid dish is relative.
In the technical proposal, the device comprises a base,
the "+" input and output directions are the same, which is a low ratio.
As a further setting of the utility model, first cycloid groove sets up on the a face of cycloid dish, and first ball fixed orifices sets up on the relative opposite face of the a face of apron and cycloid dish, second cycloid groove sets up on the relative opposite face of the B face of output shaft and cycloid dish, and second ball fixed orifices sets up on the B face of cycloid dish.
In the technical proposal, the device comprises a base,
the "-" input and output directions are reversed, which is a low ratio.
As a further setting of the utility model, first cycloid groove sets up on the a face of cycloid dish, and first ball fixed orifices sets up on the opposite face that the a face of apron is relative with the cycloid dish, second cycloid groove sets up on the B face of cycloid dish, and second ball fixed orifices sets up on the opposite face that the B face of output shaft and cycloid dish is relative.
In the technical proposal, the device comprises a base,
the "+" input and output directions are the same, which is a high ratio.
As a further setting of the utility model, first cycloid groove sets up on the apron opposite face relative with the a face of cycloid dish, and first ball fixed orifices sets up on the a face of cycloid dish, second cycloid groove sets up on the opposite face that the output shaft is relative with the B face of cycloid dish, and second ball fixed orifices sets up on the B face of cycloid dish.
In the technical proposal, the device comprises a base,
“－"input and output directions are opposite, which is a high ratio.
By adopting the scheme, the high transmission ratio or the low transmission ratio can be realized by changing the arrangement positions of the first ball fixing hole and the first cycloid groove and the arrangement positions of the second ball fixing hole and the second cycloid groove, the problem that the transmission ratio of the existing transmission structure is low is solved, and the size is small.
The present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a structural sectional view of embodiment 1 of the present invention;
FIG. 2 is an exploded view of the structure of embodiment 1 of the present invention;
FIG. 3 is an exploded view of the structure of embodiment 1 of the present invention;
fig. 4 is a structural sectional view of embodiment 2 of the present invention;
fig. 5 is a structural sectional view of embodiment 3 of the present invention;
fig. 6 is a structural sectional view of embodiment 4 of the present invention.
Detailed Description
The utility model discloses a concrete embodiment is shown in fig. 1-3, a differential cycloid speed change gear, including cycloid dish 1, the axial both ends face of cycloid dish 1 is A face and B face respectively, be provided with respectively on the A face of cycloid dish 1 and the B face around the first ball A1 of a plurality of and second ball B1 of circumference distribution, still include organism 2, input shaft 3 and output shaft 4, be provided with the installation cavity 21 that supplies cycloid dish 1 to install on organism 2, cycloid dish 1 is by input shaft 3 eccentric drive, be provided with first cycloid groove 01 and around the first ball fixed orifices 02 of a plurality of circumference distribution on the A face of cycloid dish 1 and the installation cavity 21 between the opposite face relative with the A face, be provided with second cycloid groove 03 and around a plurality of second ball fixed orifices 04 of circumference distribution between the B face of cycloid dish 1 and the output shaft 4, first ball A1 is arranged in between first cycloid groove 01 and the first ball fixed orifices 02 and second ball fixed orifices 03 and second ball fixed orifices 84 are arranged in second cycloid groove 03 and second ball fixed orifices 84, first ball fixed orifices 3 and second ball B1 are arranged in The cycloid disc 1 is made to do cycloid movement between the fixed holes 04, and the number of tooth profiles of the first cycloid groove 01 is smaller than or larger than that of the second cycloid groove 03. The output shaft 4 is driven by the cycloid disc 1, the criss-cross ball bearing 22 is arranged between the output shaft 4 and the machine body 2, and in addition, a plurality of necessary bearings or rollers, roller retainers, oil seals, sealing rings, connecting screws and the like need to be arranged between the components, which are not detailed herein, the tooth profile ratios of the first cycloid groove 01 and the second cycloid groove 03 are different, the transmission ratio of speed change is also different, and when the positions of the first cycloid groove 01 and the first ball fixing hole 02 as well as the positions of the second cycloid groove 03 and the second ball fixing hole 04 are different, the relative rotating directions of input and output of the first cycloid groove 01 and the second cycloid groove 03 can also be changed, and the tooth profile number of the first cycloid groove 01 can be smaller than that of the second cycloid groove 03 and can also be larger than that of the second cycloid groove 03.
The number of the first balls A1 is 1 more than that of the first cycloid grooves 01, and the number of the second balls B1 is 1 more than that of the second cycloid grooves 03. Preferably, the difference between the number of the first balls a1 and the number of the tooth profiles of the first cycloid groove 01 is 1, the difference between the number of the second balls B1 and the number of the tooth profiles of the second cycloid groove 03 is 1, although the number of the first balls a1 may be 1-n greater than the number of the tooth profiles of the first cycloid groove 01, and the number of the second balls B1 may be 1-n greater than the number of the tooth profiles of the second cycloid groove 03, where the diameters of the first balls a1 and the second balls B1 are not limited, and the diameters of the first balls a1 and the second balls B1 may be the same or different.
The above-mentioned body 2 includes a housing 23 and a cover plate 24, and the first swing groove 01 or the first ball fixing hole 02 is provided on the cover plate 24. The body 2 is of a matched structure, so that the installation is convenient, the shell 23 and the cover plate 24 can be connected through detachable fasteners such as screws, and the shell 23 can be formed by a plurality of parts.
In embodiment 1, as shown in fig. 1, the first cycloid groove 01 is provided on the opposite surface of the cover plate 24 opposite to the a surface of the cycloid disc 1, the first ball fixing hole 02 is provided on the a surface of the cycloid disc 1, the second cycloid groove 03 is provided on the B surface of the cycloid disc 1, and the second ball fixing hole 04 is provided on the opposite surface of the output shaft 4 opposite to the B surface of the cycloid disc 1.
The "+" input and output directions are the same, which is a low ratio.
In embodiment 2, as shown in fig. 4, the first cycloid groove 01 is provided on the a-side of the cycloid disk 1, the first ball fixing hole 02 is provided on the opposite surface of the cover plate 24 opposite to the a-side of the cycloid disk 1, the second cycloid groove 03 is provided on the opposite surface of the output shaft 4 opposite to the B-side of the cycloid disk 1, and the second ball fixing hole 04 is provided on the B-side of the cycloid disk 1.
The "-" input and output directions are reversed, which is a low ratio.
In embodiment 3, as shown in fig. 5, the first cycloid groove 01 is provided on the a-side of the cycloid disk 1, the first ball fixing hole 02 is provided on the opposite surface of the cover plate 24 opposite to the a-side of the cycloid disk 1, the second cycloid groove 03 is provided on the B-side of the cycloid disk 1, and the second ball fixing hole 04 is provided on the opposite surface of the output shaft 4 opposite to the B-side of the cycloid disk 1.
The "+" input and output directions are the same, which is a high ratio.
In embodiment 4, as shown in fig. 6, the first cycloid groove 01 is provided on the opposite surface of the cover plate 24 opposite to the a surface of the cycloid disc 1, the first ball fixing hole 02 is provided on the a surface of the cycloid disc 1, the second cycloid groove 03 is provided on the opposite surface of the output shaft 4 opposite to the B surface of the cycloid disc 1, and the second ball fixing hole 04 is provided on the B surface of the cycloid disc 1.
The "-" input and output directions are reversed, which is a high ratio.
The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.
Claims (7)
1. The utility model provides a differential cycloid speed change gear, includes the cycloid dish, the axial both ends face of cycloid dish is A face and B face respectively, is provided with the first ball of a plurality of around circumference distribution on the A face of cycloid dish, is provided with a plurality of second ball around circumference distribution on the B face of cycloid dish, its characterized in that: the installation cavity for installing the cycloid disc is arranged on a machine body of the speed changing device, wherein the cycloid disc is eccentrically driven by an input shaft in the speed changing device, a first cycloid groove and a plurality of first ball fixing holes distributed in the circumferential direction are arranged between the surface A of the cycloid disc and the opposite surface, opposite to the surface A, on the installation cavity, a second cycloid groove and a plurality of second ball fixing holes distributed in the circumferential direction are arranged between the surface B of the cycloid disc and an output shaft of the speed changing device, first balls are arranged between the first cycloid groove and the first ball fixing holes, and second balls are arranged between the second cycloid groove and the second ball fixing holes, so that the cycloid disc does cycloid movement, the output shaft is driven by the cycloid disc, and the number of tooth profiles of the first cycloid groove is smaller than or larger than that of the second cycloid groove.
2. The differential cycloidal transmission according to claim 1 including: the number of the first balls is 1 more than that of the first cycloid grooves, and the number of the second balls is 1 more than that of the second cycloid grooves.
3. The differential cycloid transmission of claim 1 or 2, wherein: the organism includes shell and apron, and first pendulum line groove or first ball fixed orifices set up on the apron.
4. The differential cycloidal transmission according to claim 3 including: the first cycloid groove is formed in the opposite surface, opposite to the surface A, of the cover plate, the first ball fixing hole is formed in the surface A of the cycloid disc, the second cycloid groove is formed in the surface B of the cycloid disc, and the second ball fixing hole is formed in the opposite surface, opposite to the surface B, of the output shaft.
5. The differential cycloidal transmission according to claim 3 including: the first cycloid groove is formed in the surface A of the cycloid disc, the first ball fixing hole is formed in the opposite surface, opposite to the surface A of the cycloid disc, of the cover plate, the second cycloid groove is formed in the opposite surface, opposite to the surface B of the cycloid disc, of the output shaft, and the second ball fixing hole is formed in the surface B of the cycloid disc.
6. The differential cycloidal transmission according to claim 3 including: the first cycloid groove is formed in the surface A of the cycloid disc, the first ball fixing hole is formed in the opposite surface, opposite to the surface A of the cycloid disc, of the cover plate, the second cycloid groove is formed in the surface B of the cycloid disc, and the second ball fixing hole is formed in the opposite surface, opposite to the surface B of the cycloid disc, of the output shaft.
7. The differential cycloidal transmission according to claim 3 including: the first cycloid groove is formed in the opposite surface, opposite to the surface A, of the cover plate, the first ball fixing hole is formed in the surface A of the cycloid disc, the second cycloid groove is formed in the opposite surface, opposite to the surface B, of the output shaft, and the second ball fixing hole is formed in the surface B of the cycloid disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957603.9U CN210686869U (en) | 2019-06-24 | 2019-06-24 | Differential cycloid speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957603.9U CN210686869U (en) | 2019-06-24 | 2019-06-24 | Differential cycloid speed variator |
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| Publication Number | Publication Date |
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| CN210686869U true CN210686869U (en) | 2020-06-05 |
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| CN201920957603.9U Active CN210686869U (en) | 2019-06-24 | 2019-06-24 | Differential cycloid speed variator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285195A (en) * | 2019-06-24 | 2019-09-27 | 海尚集团有限公司 | Differential cycloid speed change gear |
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- 2019-06-24 CN CN201920957603.9U patent/CN210686869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285195A (en) * | 2019-06-24 | 2019-09-27 | 海尚集团有限公司 | Differential cycloid speed change gear |
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