CN204900698U

CN204900698U - Interior cycloid reducer

Info

Publication number: CN204900698U
Application number: CN201520625524.XU
Authority: CN
Inventors: 王印; 高永香; 郭太兵
Original assignee: English Rake Automation Co Ltd
Current assignee: English Rake Automation Co Ltd
Priority date: 2015-08-19
Filing date: 2015-08-19
Publication date: 2015-12-23
Anticipated expiration: 2025-08-19

Abstract

The utility model relates to a reduction gear technical field for the industrial robot more specifically, relates to an interior cycloid reducer, the utility model provides a novel structure, the interior cycloid reducer that the transmission velocity ratio is big, including hypocycloid shell, eccentric shaft, pinwheel, output flange and input flange, every tooth of hypocycloid shell inner circle is all tangent with the tooth of pinwheel outer lane, the tooth of hypocycloid shell and pinwheel is equal tooth pitch respectively to be arranged, and the hypocycloid shell has more a tooth than the pinwheel, the pinwheel passes through bearing and eccentric shaft hookup, the eccentric shaft passes through input shaft and one -level driven gear gear coupling, the eccentric shaft both ends are passed through angular contact ball bearing and are assembled respectively in input flange and output flange, through adjusting screw, locating pin and connecting screw hookup between input flange and the output flange, the input flange passes through base bearing I and base bearing II and the hookup of hypocycloid shell respectively with the output flange, the utility model discloses mainly use in the aspect of industrial robot.

Description

Inner swing line speed reducer

Technical field

The utility model relates to industrial robot retarder technical field, more specifically, relates to a kind of inner swing line speed reducer.

Background technique

Traditional industrial robot retarder is RV retarder, and its internal structure has pin wheel housing, cycloid wheel and standard needle roller etc., and wherein pin wheel housing inner ring processes multiple pin-and-hole, during assembling insert needle roller, ensure cycloid wheel and needle roller tangent.The machining error of this structure due to multiple pin-and-hole and the foozle of needle roller, increase the assembly error of retarder virtually, reduces the precision of retarder.Therefore, be necessary to make improvements.

Model utility content

In order to overcome deficiency existing in prior art, provide the inner swing line speed reducer that a kind of novel structure, transmission speed ratio are large.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

Inner swing line speed reducer, comprise hypocycloid shell, eccentric shaft, pinwheel, output flange and input flange, each tooth of described hypocycloid shell inner ring is all tangent with the tooth of pinwheel outer ring, the tooth of described hypocycloid shell and pinwheel arranges in equal teeth respectively, and a hypocycloid shell tooth more than pinwheel, described pinwheel is connected with eccentric shaft by needle bearing, described eccentric shaft is by input shaft and one-level driven gear gear couplings, described eccentric shaft two ends are assemblied in input flange and output flange by angular contact ball bearing respectively, adjusting screw is passed through between described input flange and output flange, locating stud and attachment screw connect, described input flange and output flange connect with hypocycloid shell respectively by main bearing I and main bearing II.

The inner ring processing hypocycloid profile of tooth of described hypocycloid shell, the outer ring machined needles tooth profile of tooth of described pinwheel.

Described pinwheel has two, is respectively pinwheel I and pinwheel II, and described pinwheel I is identical with pinwheel II external tooth form, parallel placement, and internal bearings hole is symmetric.

Described eccentric shaft has three.

Described adjusting screw, locating stud and attachment screw have three respectively.

The beneficial effect that compared with prior art the utility model has is:

The utility model is by the transmission of 3 eccentric shaft band plane gears, more stable than two shaft drive; The utility model replaces pin wheel housing by hypocycloid shell, avoids the complicated technology of pin hole processing, reduces driving error; The utility model 3 pairs of screws achieve the gap adjustment of main bearing, and structure is simple, reliable; The utility model hypocycloid shell replaces pin wheel housing and pin-and-hole, replaces cycloid wheel, can effectively improve retarder precision with pinwheel.

Accompanying drawing explanation

Below by accompanying drawing, embodiment of the present utility model is described in further detail.

Fig. 1 is the plan view of the utility model retarder;

Fig. 2 is the sectional view of A-A in Fig. 1;

Fig. 3 is the rear view of the utility model retarder;

Fig. 4 is the utility model hypocycloid shell and the tangent schematic diagram of pinwheel.

In figure: 1 be input shaft, 2 be one-level driven gear, 3 be hypocycloid shell, 4 be eccentric shaft, 6 be needle bearing, 8 be angular contact ball bearing, 9 be output flange, 11 be input flange, 12 be adjusting screw, 14 be locating stud, 15 be attachment screw for pinwheel II, 13 for pinwheel I, 10 for main bearing II, 7 for main bearing I, 5.

Embodiment

The utility model will be further described by reference to the accompanying drawings for embodiment below.

As Figure 1-4, inner swing line speed reducer, comprise hypocycloid shell 3, pinwheel, eccentric shaft 5, gear and the part such as input flange 11, output flange 10, this structure retarder divides double reduction transmission, the first order is Involutes Gears Transmission, slows down by fixing gear ratio; The second level is that differential gear slows down, and one-level driven gear 2 is connected with eccentric shaft 5, as the input slowed down in the second level, eccentric shaft 5 has needle bearing 7 install pinwheel, and in addition, hypocycloid shell 3 and pinwheel arrange with equal teeth, hypocycloid shell 3 tooth more than pinwheel.Now, if eccentric shaft 5 rotates 1 week, then pinwheel will rotate a tooth along the direction contrary with eccentric shaft 5, and this rotation is passed to output flange 10.

Cycloidal tooth profile is processed, described pinwheel Excircle machining pin tooth profile of tooth, both equal teeth arrangements, and hypocycloid shell 3 profile of tooth and the tangent assembling of pinwheel profile of tooth inside described hypocycloid shell 3.

Described eccentric shaft 5 totally three, be evenly distributed on input output flange, eccentric shaft 5 eccentric part has needle bearing 7 to coordinate with three bearing holes of pinwheel, and eccentric shaft 5 two ends have angular contact ball bearing 8 to be assemblied in input output flange respectively, play a supportive role to eccentric shaft 5.

There are 3 straight pin location between described input flange 11 and output flange 10, have 3 screws to connect, have 3 screws to play regulatory role.

Described input flange 11, between output flange 10 and hypocycloid shell 3, main bearing is housed, pivot flange rotates.

Claims

1. inner swing line speed reducer, it is characterized in that: comprise hypocycloid shell (3), eccentric shaft (5), pinwheel, output flange (10) and input flange (11), each tooth of described hypocycloid shell (3) inner ring is all tangent with the tooth of pinwheel outer ring, described hypocycloid shell (3) arranges in equal teeth respectively with the tooth of pinwheel, and hypocycloid shell (3) tooth more than pinwheel, described pinwheel is connected with eccentric shaft (5) by needle bearing (7), described eccentric shaft (5) is by input shaft (1) and one-level driven gear (2) gear couplings, described eccentric shaft (5) two ends are assemblied in input flange (11) and output flange (10) by angular contact ball bearing (8) respectively, by adjusting screw (13) between described input flange (11) and output flange (10), locating stud (14) and attachment screw (15) connect, described input flange (11) and output flange (10) connect with hypocycloid shell (3) respectively by main bearing I (4) and main bearing II (6).

2. a kind of inner swing line speed reducer according to claim 1, is characterized in that: the inner ring processing hypocycloid profile of tooth of described hypocycloid shell (3), the outer ring machined needles tooth profile of tooth of described pinwheel.

3. a kind of inner swing line speed reducer according to claim 1, it is characterized in that: described pinwheel has two, be respectively pinwheel I (9) and pinwheel II (12), described pinwheel I (9) is identical with pinwheel II (12) external tooth form, parallel placement, and internal bearings hole is symmetric.

4. a kind of inner swing line speed reducer according to claim 1, is characterized in that: described eccentric shaft (5) has three.

5. a kind of inner swing line speed reducer according to claim 1, is characterized in that: described adjusting screw (13), locating stud (14) and attachment screw (15) have three respectively.