Precise cycloidal-pin wheel speed reducer assembly

Abstract

The utility model provides a cycloidal-pin wheel precision speed reducer assembly which comprises a shell and a rotating main shaft, the rotating main shaft is rotationally connected with the shell, the two ends of the rotating main shaft are fixedly connected with an input shaft and a speed change disc respectively, and the end, away from the rotating main shaft, of the speed change disc is fixedly connected with an adjusting assembly which is fixedly connected with an output shaft. A first rolling disc and a second rolling disc are fixedly connected to the outer circle face of the rotating main shaft, a plurality of first open holes are formed in the first rolling disc and the second rolling disc, a plurality of second rolling shafts are fixedly connected to the speed changing disc, and the second rolling shafts are in sliding connection with the first open holes. According to the scheme, the first sliding rod and the second sliding rod which can slide relatively are arranged between the speed change disc and the output shaft, so that the speed change disc can drive the second rolling shaft on the speed change disc to slide relatively relative to the first opening of the first rolling disc through the relative sliding of the first sliding rod and the second sliding rod; therefore, the purpose that the rotating speed ratio of the input shaft to the output shaft is adjustable is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a cycloid pinwheel precision reducer assembly. Background Art

[0002] Cycloidal pinwheel precision reducers are high-precision, high-efficiency speed reduction devices widely used in industrial robots, precision machine tools, and automated equipment. Their core operating principle is to achieve speed reduction through the meshing of a cycloidal pinwheel and pins. They offer advantages such as a compact structure, high load capacity, and smooth transmission. The technical background of cycloidal pinwheel reducers focuses on improving transmission accuracy, reducing backlash, and enhancing rigidity and load capacity.

[0003] For example, a Chinese patent discloses a "cycloid reducer" (patent number: CN117028493A). This patent includes an input shaft running through the middle of the outer shell. By rotating the input shaft, the cycloid reduction group can be rotated synchronously. The cycloid reduction group includes at least one set of cycloid disks and a non-circular pin provided on the inner shell. A cycloid gear set is formed between the outer edge cycloid teeth on the cycloid disk and the pinwheel teeth on the inner wall of the outer shell. A waist-shaped hole is provided through the cycloid disk. At the same time, the non-circular pin is fitted into the hole where the waist-shaped hole is located. When the cycloid disk is planetarily driven, the non-circular pin on the waist-shaped hole is driven to rotate synchronously. The two ends of the non-circular pin are provided with a semicircular arc surface structure, so that the arc surface structure and the inner wall of the waist-shaped hole are formed in contact during transmission. The above patent has the advantages of reducing contact stress and improving service life.

[0004] However, it is difficult to adjust the deceleration ratio of the above-mentioned cycloid reducer, and therefore a cycloid reducer with adjustable deceleration ratio is needed. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a cycloid pinwheel precision reducer assembly, which solves the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cycloid pinwheel precision reducer assembly, comprising a shell and a rotating main shaft, the rotating main shaft being rotatably connected to the shell, and characterized in that: the two ends of the rotating main shaft are respectively fixedly connected to an input shaft and a speed change disk, the end of the speed change disk away from the rotating main shaft is fixedly connected to an adjusting assembly, the adjusting assembly is fixedly connected to an output shaft, a first rolling disk and a second rolling disk are fixedly connected to the outer circumferential surface of the rotating main shaft, a plurality of first openings are provided on the first rolling disk and the second rolling disk, a plurality of second rolling shafts are fixedly connected to the speed change disk, the second rolling shaft is slidably connected to the first opening, a plurality of first slots are provided on the inner circumferential surface of the shell, and the first rolling shaft is rotatably connected in the first slot.

[0009] Preferably, the adjustment assembly includes a first sliding rod and a second sliding rod, the first sliding rod is fixedly connected to the speed change plate, the second sliding rod is fixedly connected to the outer shell, a third opening is provided on an end face of the outer shell close to the output shaft, the second sliding rod is rotatably connected to the third opening, and the first sliding rod is slidably connected to the second sliding rod.

[0010] Preferably, two fourth slots are provided on the first sliding rod, a third slot is provided in the second sliding rod, a driving base is fixedly connected to the outer circular surface of the third slot, a traveling wheel is rotatably connected to the driving base, and the traveling wheel is rollingly connected to the fourth slot.

[0011] Preferably, a plurality of arcs are provided on the outer circumferential surfaces of the first rolling disk and the second rolling disk, and a second opening is also provided on the first rolling disk and the second rolling disk, and a first eccentric shaft and a second eccentric shaft are fixedly connected to the two second openings respectively, and the eccentric angles of the first eccentric shaft and the second eccentric shaft are opposite.

[0012] Preferably, the first rolling shaft is adapted to the circular arc, the first opening is adapted to the second rolling shaft, and the second rolling shaft is provided with a chamfer.

[0013] Preferably, a second slot is provided at the connection between the rotating main shaft and the first eccentric shaft and the second eccentric shaft, and a third rolling shaft is rotatably connected in each of the second slots.

[0014] Preferably, a plurality of first slots are formed on the inner circumferential surface of the shell, and a first rolling shaft is rotatably connected in the first slot.

[0015] (3) Beneficial effects

[0016] The utility model provides a cycloid pinwheel precision reducer assembly. It has the following beneficial effects:

[0017] 1. This solution provides a first sliding rod and a second sliding rod that can slide relatively between the speed change plate and the output shaft, so that the speed change plate can slide relative to each other through the first sliding rod and the second sliding rod, thereby driving the second rolling shaft on the speed change plate to slide relative to the first opening of the first rolling plate, thereby achieving the purpose of adjusting the ratio of the rotational speeds of the input shaft and the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of B;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the first rolling disk and the second rolling disk in the utility model.

[0023] In the figure: 11, housing; 12, input shaft; 13, output shaft; 14, rotating main shaft; 15, speed change plate; 16, first sliding rod; 17, second sliding rod; 18, first slot; 19, first rolling axis; 20, first rolling disk; 21, second rolling disk; 22, first opening; 23, second opening; 24, first eccentric axis; 25, second eccentric axis; 26, second rolling axis; 27, chamfer; 28, arc; 29, third opening; 30, second slot; 31, third rolling axis; 32, third slot; 33, fourth slot; 34, driving base; 35, traveling wheel. DETAILED DESCRIPTION

[0024] The present invention provides a cycloid pinwheel precision reducer assembly, such as Figure 1-5 As shown, it includes a housing 11, an input shaft 12, an output shaft 13, a rotating main shaft 14, a speed change plate 15, a first sliding rod 16, a second sliding rod 17, a first slot 18, a first rolling shaft 19, a first rolling disk 20, a second rolling disk 21, a first opening 22, a second opening 23, a first eccentric shaft 24, a second eccentric shaft 25, a second rolling shaft 26, a chamfer 27, an arc 28, a third opening 29, a second slot 30, a third rolling shaft 31, a third slot 32, a fourth slot 33, a drive base 34, and a traveling wheel 35.

[0025] like Figure 1-5As shown, the rotating main shaft 14 is rotatably connected to the outer shell 11, and the two ends of the rotating main shaft 14 are fixedly connected to the input shaft 12 and the speed change plate 15 respectively. The end of the speed change plate 15 away from the rotating main shaft 14 is fixedly connected to the adjusting component, and the adjusting component is fixedly connected to the output shaft 13. The outer circular surface of the rotating main shaft 14 is fixedly connected to the first rolling plate 20 and the second rolling plate 21. A plurality of first openings 22 are provided on the first rolling plate 20 and the second rolling plate 21. A plurality of second rolling shafts 26 are fixedly connected to the speed change plate 15, and the second rolling shafts 26 are slidably connected to the first openings 22. A plurality of first slots 18 are provided on the inner circular surface of the outer shell 11, and the first rolling shaft 19 is rotatably connected in the first slot 18.

[0026] The inner circumferential surface of the housing 11 is defined by a plurality of first slots 18, into which first rolling shafts 19 are rotatably connected. The adjustment assembly includes a first sliding rod 16 and a second sliding rod 17. The first sliding rod 16 is fixedly connected to the speed change plate 15, and the second sliding rod 17 is fixedly connected to the housing 113. A third opening 29 is defined on one end surface of the housing 11 near the output shaft 13. The second sliding rod 17 is rotatably connected to the third opening 29, and the first sliding rod 16 and the second sliding rod 17 are slidably connected.

[0027] Two fourth slots 33 are provided on the first sliding rod 16, and a third slot 32 is provided in the second sliding rod 17. A driving base 34 is fixedly connected to the outer circumferential surface of the third slot 32, and a traveling wheel 35 is rotatably connected to the driving base 34. The traveling wheel 35 is rollingly connected to the fourth slot 33. The driving base 34 has a built-in motor. The built-in motor of the driving base 34 is used to drive the traveling wheel 35 to roll relative to the fourth slot 33, thereby causing the first sliding rod 16 and the second sliding rod 17 to slide relative to each other.

[0028] A plurality of arcs 28 are provided on the outer circumferential surfaces of the first rolling disk 20 and the second rolling disk 21. The first rolling disk 20 and the second rolling disk 21 also have second openings 23. A first eccentric shaft 24 and a second eccentric shaft 25 are fixedly connected to the two second openings 23 respectively. The eccentric angles of the first eccentric shaft 24 and the second eccentric shaft 25 are opposite.

[0029] The first rolling shaft 19 is adapted to the arc 28, the first opening 22 is adapted to the second rolling shaft 26, the second rolling shaft 26 is provided with a chamfer 27, and a second slot 30 is provided at the connection between the rotating main shaft 14 and the first eccentric shaft 24 and the second eccentric shaft 25, and the third rolling shaft 31 is rotatably connected in the second slot 30.

[0030] When the cycloid pinwheel deceleration is performed in this scheme, first, the built-in motor of the driving base 34 is started, and the built-in motor of the driving base 34 drives the traveling wheel 35 to roll relative to the fourth slot 33, thereby causing the first sliding rod 16 and the second sliding rod 17 to slide relative to each other, thereby adjusting the ratio of the rotation speed of the speed change disk 15 and the output shaft 13.

[0031] When the first sliding rod 16 drives the speed change disk 15 to slide until the second rolling shaft 26 slides outside the first opening 22 of the first rolling disk 20, the ratio of the rotational speeds of the speed change disk 15 to the output shaft 13 decreases because only the first opening 22 of the second rolling disk 21 and the second rolling shaft 26 roll relative to each other. Conversely, when the first sliding rod 16 drives the speed change disk 15 to slide until the second rolling shaft 26 slides inside the first opening 22 of the first rolling disk 20, the ratio of the rotational speeds of the speed change disk 15 to the output shaft 13 increases.

[0032] Then, the input shaft 12 drives the rotating main shaft 14 to rotate, and the rotating main shaft 14 drives the first rolling plate 20 and the second rolling plate 21 to rotate respectively through the first eccentric shaft 24 and the second eccentric shaft 25. When the first rolling plate 20 and the second rolling plate 21 rotate with the axis of the first eccentric shaft 24 and the second eccentric shaft 25 as the axis center, the arc 28 on the outer circumferential surface of the first rolling plate 20 and the second rolling plate 21 roll relative to the first rolling shaft 19.

[0033] Finally, the first opening 22 on the first rolling disk 20 and the second rolling disk 21 rolls relative to the second rolling shaft 26, thereby driving the speed change disk 15 to rotate through the second rolling shaft 26. The rotation speed of the speed change disk 15 is lower than the rotation speed of the first rolling disk 20 and the second rolling disk 21. Therefore, the rotation speed of the speed change disk 15 is lower than the rotation speed of the input shaft 12. The speed change disk 15 drives the output shaft 13 to rotate through the first sliding rod 16 and the second sliding rod 17. Therefore, the rotation speed of the output shaft 13 is lower than the rotation speed of the input shaft 12.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cycloid pinwheel precision reducer assembly, comprising a housing (11) and a rotating spindle (14), wherein the rotating spindle (14) is rotatably connected to the housing (11), characterized in that: The two ends of the rotating main shaft (14) are respectively fixedly connected to the input shaft (12) and the speed change disk (15); the end of the speed change disk (15) away from the rotating main shaft (14) is fixedly connected to the adjustment component; the adjustment component is fixedly connected to the output shaft (13); the outer circumferential surface of the rotating main shaft (14) is fixedly connected to a first rolling disk (20) and a second rolling disk (21); the first rolling disk (20) and the second rolling disk (21) are both provided with a plurality of first openings (22); the speed change disk (15) is fixedly connected to a plurality of second rolling shafts (26); the second rolling shafts (26) are slidably connected to the first openings (22); the inner circumferential surface of the housing (11) is provided with a plurality of first slots (18); the first rolling shafts (19) are rotatably connected in the first slots (18).

2. The cycloid pinwheel precision reducer assembly according to claim 1, characterized in that: The adjustment assembly includes a first sliding rod (16) and a second sliding rod (17), wherein the first sliding rod (16) is fixedly connected to the speed change plate (15), and the second sliding rod (17) is fixedly connected to the housing (11) 3. A third opening (29) is provided on an end surface of the housing (11) close to the output shaft (13), and the second sliding rod (17) is rotatably connected to the third opening (29), and the first sliding rod (16) and the second sliding rod (17) are slidably connected.

3. The cycloid pinwheel precision reducer assembly according to claim 2, characterized in that: Two fourth slots (33) are provided on the first sliding rod (16), a third slot (32) is provided in the second sliding rod (17), a driving base (34) is fixedly connected to the outer circumferential surface of the third slot (32), a traveling wheel (35) is rotatably connected to the driving base (34), and the traveling wheel (35) is rollingly connected to the fourth slot (33).

4. The cycloid pinwheel precision reducer assembly according to claim 2, characterized in that: A plurality of arcs (28) are provided on the outer circumferential surfaces of the first rolling disk (20) and the second rolling disk (21). A second opening (23) is also provided on the first rolling disk (20) and the second rolling disk (21). A first eccentric shaft (24) and a second eccentric shaft (25) are fixedly connected in the two second openings (23), respectively. The eccentric angles of the first eccentric shaft (24) and the second eccentric shaft (25) are opposite.

5. The cycloid pinwheel precision reducer assembly according to claim 4, characterized in that: The first rolling shaft (19) is adapted to the circular arc (28), the first opening (22) is adapted to the second rolling shaft (26), and the second rolling shaft (26) is provided with a chamfer (27).

6. The cycloid pinwheel precision reducer assembly according to claim 4, characterized in that: A second slot (30) is provided at the connection between the rotating main shaft (14), the first eccentric shaft (24) and the second eccentric shaft (25), and a third rolling shaft (31) is rotatably connected in the second slot (30).

7. The cycloid pinwheel precision reducer assembly according to claim 1, characterized in that: A plurality of first slots (18) are provided on the inner circumferential surface of the housing (11), and a first rolling shaft (19) is rotatably connected in the first slot (18).

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