CN209762172U

CN209762172U - Differential mechanism

Info

Publication number: CN209762172U
Application number: CN201920322777.8U
Authority: CN
Inventors: 张建利
Original assignee: Aoken Cnc Equipment (suzhou) Co Ltd
Current assignee: Aoken Cnc Equipment (suzhou) Co Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2019-12-10
Anticipated expiration: 2029-03-14

Abstract

The utility model discloses a differential mechanism, which comprises a housing, casing internally mounted has the planet carrier, planet carrier one side is rotated and is installed the rotation ring gear, just planet carrier opposite side fixed mounting has fixed ring gear, it is connected with the second planet wheel to rotate ring gear intermeshing, the lateral surface meshing of second planet wheel is connected with the differential output shaft, fixed ring gear intermeshing is connected with first planet wheel, first planet wheel lateral surface meshing is connected with the main shaft, just the central point of main shaft and the central point of differential output shaft are located same water flat line, the inside welding of main shaft has differential output dabber, just the other end welding of differential output dabber is inside the differential output shaft, and the phase angle of main shaft and differential output dabber in high-speed rotation is controllable, therefore this mechanism can extensively be used for numerical control facing head, drum, numerical control honing machine and various occasions requiring high-speed differential.

Description

differential mechanism

Technical Field

The utility model relates to a numerical control technical field specifically is a differential mechanism.

Background

the numerical control technology is a base for realizing automatic, flexible and integrated production in the manufacturing industry, is the core of the modern manufacturing technology, is an essential important means for improving the product quality and the labor productivity of the manufacturing industry, and is increasingly widely applied to the industrial production along with the progress of science and technology and the development of the society.

In the high-speed differential occasions of mechanical equipment such as a numerical control facing head, a numerical control honing machine and the like, a differential mechanism is often adopted, but the phase angle of a general high-speed differential mechanism is inconvenient to control, and the differential mechanism is not necessarily suitable for various high-speed differential occasions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a differential mechanism, the phase angle is controllable, and is fit for a plurality of high-speed differential occasions to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a differential mechanism, includes the casing, casing internally mounted has the planet carrier, planet carrier one side is rotated and is installed the rotation ring gear, just planet carrier opposite side fixed mounting has fixed ring gear, it is connected with second planet wheel to rotate ring gear intermeshing, the lateral surface meshing of second planet wheel is connected with differential output shaft, fixed ring gear intermeshing is connected with first planet wheel, first planet wheel lateral surface meshing is connected with the main shaft, just the central point of main shaft and the central point of differential output shaft are located same water flat line, the inside welding of main shaft has differential output dabber, just the other end welding of differential output dabber is inside the differential output shaft, the meshing is connected with main input band pulley behind the casing is run through to the one end of main shaft, it is connected with differential input gear to rotate.

Preferably, the number of the first planet gears is at least three, and the first planet gears are meshed and connected with the inner part of the fixed inner gear ring at equal angles.

Preferably, the number of the second planet gears is at least three, and the second planet gears are meshed and connected with the inner part of the rotating inner gear ring at equal angles.

preferably, the inner ring diameter of the rotating inner ring gear is the same as the inner ring diameter of the fixed inner ring gear.

Preferably, a notch is formed in the part, located inside the main shaft, of the differential output mandrel, and a bump corresponding to the notch is arranged inside the differential output mandrel.

Preferably, a notch is formed in the part, located inside the differential output shaft, of the differential output mandrel, and a bump corresponding to the notch is welded inside the differential output shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the phase angle of the main shaft and the differential output mandrel in high-speed rotation is controllable, so the mechanism can be widely applied to a numerical control facing head, a numerical control honing machine and various occasions requiring high-speed differential motion.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the housing of the present invention;

Fig. 3 is a schematic view of the working structure of the present invention.

In the figure: 1. a housing; 2. a rotating ring gear; 3. a differential output shaft; 4. a planet carrier; 5. a first planet gear; 6. a second planet wheel; 7. fixing the inner gear ring; 8. a primary input pulley; 9. a differential input gear; 10. a main shaft; 11. differential output spindle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a differential mechanism comprises a machine shell 1, wherein a planet carrier 4 is installed inside the machine shell 1, a rotating inner gear ring 2 is installed on one side of the planet carrier 4 in a rotating mode, a fixed inner gear ring 7 is fixedly installed on the other side of the planet carrier 4, a second planet wheel 6 is connected to the rotating inner gear ring 2 in an engaged mode, a differential output shaft 3 is connected to the outer side of the second planet wheel 6 in an engaged mode, a first planet wheel 5 is connected to the inner side of the fixed inner gear ring 7 in an engaged mode, a main shaft 10 is connected to the outer side of the first planet wheel 5 in an engaged mode, the center point of the main shaft 10 and the center point of the differential output shaft 3 are located on the same horizontal line, a differential output mandrel 11 is welded inside the main shaft 10, the other end of the differential output mandrel 11 is, the inner rotating gear ring 2 is in meshing connection with a differential input gear 9.

With reference to fig. 3:

n1 is the differential output spindle speed;

n2 is the spindle speed;

n3 is a rotating ring gear;

M1＝Z1，M2＝Z2，M3＝Z3，

When n3 is 0, the differential is a fixed-axis gear train (planetary gear train),

When n3 is not equal to 0, the differential is a differential gear train (an epicyclic gear train),

therefore, when n2 is rotating at high speed, the ratio of the phase angle difference between the main shaft 10 and the differential output spindle 11 to the phase angle change of the differential input gear 9 is:

Therefore, when the differential input gear 9 adopts a servo motor to drive the angle change, the phase change of the main shaft 10 and the differential output spindle 11 is a linear change of the proportion;

The characteristic mechanism can be used for occasions such as cutter feeding of a numerical control facing head, numerical control honing feeding, online balance calibration of a dynamic balancing machine and the like.

Specifically, the number of the first planet gears 5 is at least three, and the first planet gears 5 are meshed and connected inside the fixed inner gear ring 7 at equal angles, so that the main shafts 10 meshed with the first planet gears 5 can rotate more stably.

Specifically, the number of the second planet gears 6 is at least three, and the second planet gears are meshed and connected inside the rotating inner gear ring 2 at equal angles, so that the differential output shaft 3 meshed with the second planet gears 6 can rotate more stably.

specifically, the diameter of the inner ring of the rotating inner gear ring 2 is the same as that of the inner ring of the fixed inner gear ring 7, so that the transmission effect is improved.

specifically, a notch is formed in the part, located inside the main shaft 10, of the differential output mandrel 11, and a bump corresponding to the notch is formed inside the differential output mandrel 11, so that transmission of the differential output mandrel 11 and the transmission of the main shaft 10 can be more synchronous.

Specifically, a notch is formed in the portion, located inside the differential output shaft 3, of the differential output spindle 11, and a bump corresponding to the notch is welded inside the differential output shaft 3, so that the differential output spindle 11 and the differential output shaft 3 can rotate more synchronously.

The working principle is as follows: when the rotating inner gear ring 2 is fixed and does not rotate and the main shaft 10 rotates, the differential output spindle 11 and the main shaft 10 rotate synchronously and in the same phase; when the differential input gear 9 rotates, the differential input gear 9 drives the rotating inner gear ring 2 to rotate by a phase angle, and the differential output spindle 11 deviates from the main shaft 10 by a phase angle with a corresponding proportion in the rotating process, so that the phase angles of the main shaft 10 and the differential output spindle 11 in high-speed rotation can be controlled, and the mechanism can be widely applied to a numerical control facing head, a numerical control honing machine and various occasions requiring high-speed differential motion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A differential mechanism comprising a casing (1), characterized in that: the planetary gear set is characterized in that a planetary carrier (4) is mounted inside the casing (1), a rotating inner gear ring (2) is rotatably mounted on one side of the planetary carrier (4), a fixed inner gear ring (7) is fixedly mounted on the other side of the planetary carrier (4), a second planet gear (6) is meshed and connected with the rotating inner gear ring (2), a differential output shaft (3) is meshed and connected with the outer side surface of the second planet gear (6), a first planet gear (5) is meshed and connected with the inner side surface of the fixed inner gear ring (7), a main shaft (10) is meshed and connected with the outer side surface of the first planet gear (5), the central point of the main shaft (10) and the central point of the differential output shaft (3) are located on the same horizontal line, a differential output mandrel (11) is welded inside the main shaft (10), one end of the main shaft (10) penetrates through the shell (1) and then is connected with a main input belt wheel (8) in a meshing mode, and the rotating inner gear ring (2) is connected with a differential input gear (9) in a meshing mode.

2. A differential mechanism as claimed in claim 1 wherein: the number of the first planet gears (5) is at least three, and the first planet gears are meshed and connected with the inside of the fixed inner gear ring (7) at equal angles.

3. A differential mechanism as claimed in claim 1 wherein: the number of the second planet gears (6) is at least three, and the second planet gears are meshed and connected inside the rotating inner gear ring (2) at equal angles.

4. A differential mechanism as claimed in claim 1 wherein: the inner ring diameter of the rotating inner gear ring (2) is the same as that of the fixed inner gear ring (7).

5. a differential mechanism as claimed in claim 1 wherein: the part of the differential output mandrel (11) located inside the main shaft (10) is provided with a notch, and a bump corresponding to the notch is arranged inside the differential output mandrel (11).

6. a differential mechanism as claimed in claim 1 wherein: the part of the differential output mandrel (11) located inside the differential output shaft (3) is provided with a notch, and a lug corresponding to the notch is welded inside the differential output shaft (3).