CN202833880U - Reduction gear of hypocycloid planetary pin wheel - Google Patents

Reduction gear of hypocycloid planetary pin wheel Download PDF

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Publication number
CN202833880U
CN202833880U CN 201220482942 CN201220482942U CN202833880U CN 202833880 U CN202833880 U CN 202833880U CN 201220482942 CN201220482942 CN 201220482942 CN 201220482942 U CN201220482942 U CN 201220482942U CN 202833880 U CN202833880 U CN 202833880U
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CN
China
Prior art keywords
planetary
hypocycloid
pinwheel
pin
speed reducer
Prior art date
Application number
CN 201220482942
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Chinese (zh)
Inventor
毕云清
黄衍振
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广州数控设备有限公司
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Publication date
Application filed by 广州数控设备有限公司 filed Critical 广州数控设备有限公司
Priority to CN 201220482942 priority Critical patent/CN202833880U/en
Application granted granted Critical
Publication of CN202833880U publication Critical patent/CN202833880U/en

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Abstract

The utility model discloses a reduction gear of a hypocycloid planetary pin wheel. The reduction gear comprises a driving shaft, a planet wheel, an eccentric shaft, a planetary pin wheel and a hypocycloid pin gear housing. An output end of the driving shaft is provided with the planetary pin wheel, and the planetary pin wheel is connected with the planet wheel through the eccentric shaft. The hypocycloid pin gear housing is arranged on the periphery of the planetary pin wheel, and the reduction gear is characterized in that two sides of the planetary pin wheel are respectively provided with a connection support, the peripheries of the connection supports are connected with the hypocycloid pin gear housing through cross pin roller components, and the eccentric shaft is arranged in a bearing hole of one connection support. The reduction gear of the hypocycloid planetary pin wheel can effectively overcome the defects that an existing cycloid reducer is lack in rigidity, large in loading vibration, high in manufacture requirement, and difficult in disassembly.

Description

Hypocycloid planetary pinwheel speed reducer
Technical field
The utility model relates to the cycloidal planetary gear speed reducer field, particularly a kind of hypocycloid planetary pinwheel speed reducer that can be used for industrial robot joint.
Background technique
At present, no matter be decelerating movable teeth or other internal and external cycloids speed reducer of RV speed reducer, CORT class, in order to reach compact structure, little, the lightweight purpose of volume, the general integral type angular contact ball bearing that adopts, perhaps use the release bearing structure (being that inner ring and planet carrier are made of one, Internal and external cycle, retainer, steel ball angle of departure contact ball bearing) of similar RV retarder.But all there is the output insufficient rigidity in the bearing of this class formation, vibrates greatly during load, and also there is the mounting or dismounting hard problem in the integral type angular contact ball bearing, and then there is the defective of difficult processing in the angular contact ball bearing of separated type.
In the existing industrial robot, in the cycloid speed reducer of its use, the general involute tooth that adopts is connected between the follower of eccentric shaft and primary speed-down, but this type of Placement is so that the difficulty of processing of cycloid speed reducer is large, and its phase place also is difficult to assurance.
In addition, in the double reduction of the existing hypocycloid speed reducer part, the pinwheel structure mainly can be summarized as two kinds: the 1. mechanism of oscillating tooth rolling type, the pinwheel structure that 2. is comprised of a plurality of shock wave dishes.But these two kinds of structures are all with gear pin cover and needle pin, so its overall structure is too complicated, and Fit dimension chain is many, makes the assembly precision of a parts in the hypocycloid speed reducer be difficult to be improved.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and exports that rigidity is large, the less hypocycloid planetary pinwheel speed reducer of vibration during load.
The technical solution of the utility model is: a kind of hypocycloid planetary pinwheel speed reducer, comprise driving shaft, planet wheel, eccentric shaft, planetary pinwheel and hypocycloid pin wheel housing, the output terminal of driving shaft arranges planetary pinwheel, be connected by eccentric shaft between planetary pinwheel and the planet wheel, the planetary pinwheel periphery arranges the hypocycloid pin wheel housing, the planetary pinwheel both sides also arrange respectively link press span, be connected by the decussation roller assembly between link press span periphery and the hypocycloid pin wheel housing, eccentric shaft by bearing assemble in the bearing hole of link press span.
Described decussation roller assembly comprises roller and retainer, and retainer is round structure, according to circumferencial direction, is evenly distributed with a plurality of rollers on the retainer, and the circular end surface of adjacent two rollers is mutually vertical, a plurality of roller cross-distribution.Adopt the decussation roller fixture replaces traditional bearing of this structure, can effectively overcome existing cycloid speed reducer output insufficient rigidity, load vibration large, make the defective that requires height and dismounting difficulty.
Adopt the gear pin of half buried structure to be connected between described planetary pinwheel and the hypocycloid pin wheel housing, gear pin directly is assemblied on the semicircle orifice of planetary pinwheel.Simplified the linkage structure between planetary pinwheel and the hypocycloid pin wheel housing, made simultaneously its structure more compact, assembly precision is high.
Described planetary pinwheel has two, and the eccentric circle at the corresponding bearing place that two planetary pinwheels are connected with eccentric shaft is staggered 180 °, between two planetary pinwheels the needle pin dottle pin is set.Wherein, the needle pin dottle pin is mainly used in the gear pin on two planetary pinwheels is separated, and makes planetary pinwheel, gear pin, hypocycloid pin wheel housing and eccentric shaft form two reduction gear.
Two outsides of described two planetary pinwheels arrange respectively link press span, are left link press span and right link press span.
Adopt two keys to be connected between described planet wheel and the eccentric shaft, key and planet wheel are the integral type structure, and keyway is located on the eccentric shaft.Reduce the difficulty of processing involute tooth, also overcome the defective of precision deficiency when key separates with planetary pinion.
When this hypocycloid planetary pinwheel speed reducer used, its deceleration principle was identical with traditional hypocycloid speed reducer.
The utility model has following beneficial effect with respect to prior art:
In this hypocycloid planetary pinwheel speed reducer, by the decussation roller assembly link press span is connected with the hypocycloidal tooth shell, effectively overcome existing cycloid speed reducer output insufficient rigidity, load vibration large, make and require defective high and the mounting or dismounting difficulty.
This hypocycloid planetary pinwheel speed reducer is adopting two keys to connect being connected of eccentric shaft and planet wheel, and the form that is made of one of key and planet wheel, has overcome the difficulty of processing involute tooth, the excessively low defective of precision when overcoming again key and separating with planet wheel.
In this hypocycloid planetary pinwheel speed reducer, adopt the gear pin of half buried structure to be connected between planetary pinwheel and the hypocycloid pin wheel housing, the complex structure when pinwheel that has overcome existing hypocycloid speed reducer is connected with needle pin, not compact, defective that Fit dimension chain is many, simplified the linkage structure between planetary pinwheel and the hypocycloid pin wheel housing, make simultaneously its structure more compact, assembly precision is high.
Description of drawings
Fig. 1 is the structural representation of this hypocycloid planetary pinwheel speed reducer.
Fig. 2 is the structural representation of decussation roller assembly in this hypocycloid planetary pinwheel speed reducer.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.
Embodiment
A kind of hypocycloid planetary pinwheel of present embodiment speed reducer, its structure as shown in Figure 1, comprise driving shaft 1, planet wheel 10, eccentric shaft 8, planetary pinwheel 7 and hypocycloid pin wheel housing 4, the output terminal of driving shaft 1 arranges planetary pinwheel 7, be connected by eccentric shaft 8 between planetary pinwheel 7 and the planet wheel 10, planetary pinwheel 7 peripheries arrange hypocycloid pin wheel housing 4, the planetary pinwheel both sides also arrange respectively link press span, be respectively left link press span 2 and right link press span 9, be connected by decussation roller assembly 3 between link press span periphery and the hypocycloid pin wheel housing, eccentric shaft by bearing assemble in the bearing hole of link press span.
As shown in Figure 2, decussation roller assembly 3 comprises roller 3-1 and retainer 3-2, and retainer is round structure, according to circumferencial direction, is evenly distributed with a plurality of rollers on the retainer, and the circular end surface of adjacent two rollers is mutually vertical, a plurality of roller cross-distribution.Adopt the decussation roller fixture replaces traditional bearing of this structure, can effectively overcome existing cycloid speed reducer output insufficient rigidity, load vibration large, make the defective that requires height and dismounting difficulty.
Adopt the gear pin 5 of half buried structure to be connected between planetary pinwheel 7 and the hypocycloid pin wheel housing 4, gear pin directly is assemblied on the semicircle orifice of planetary pinwheel.Simplified the linkage structure between planetary pinwheel and the hypocycloid pin wheel housing, made simultaneously its structure more compact, assembly precision is high.
Planetary pinwheel 7 has two, and the eccentric circle at the corresponding bearing place that two planetary pinwheels are connected with eccentric shaft is staggered 180 °, between two planetary pinwheels needle pin dottle pin 6 is set.Wherein, the needle pin dottle pin is mainly used in the gear pin on two planetary pinwheels is separated, and makes planetary pinwheel, gear pin, hypocycloid pin wheel housing and eccentric shaft form two reduction gear.
Two outsides of two planetary pinwheels arrange respectively link press span, are left link press span and right link press span.
Adopt two keys to be connected between planet wheel and the eccentric shaft, key and planet wheel are the integral type structure, and keyway is located on the eccentric shaft.Reduce the difficulty of processing involute tooth, also overcome the defective of precision deficiency when key separates with planetary pinion.
When this hypocycloid planetary pinwheel speed reducer used, its deceleration principle was identical with traditional hypocycloid speed reducer.
As mentioned above, just can realize preferably the utility model, above-described embodiment is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model; Be that all equalizations of doing according to the utility model content change and modification, all contained by the utility model claim scope required for protection.

Claims (6)

1. hypocycloid planetary pinwheel speed reducer, comprise driving shaft, planet wheel, eccentric shaft, planetary pinwheel and hypocycloid pin wheel housing, the output terminal of driving shaft arranges planetary pinwheel, be connected by eccentric shaft between planetary pinwheel and the planet wheel, the planetary pinwheel periphery arranges the hypocycloid pin wheel housing, it is characterized in that, the planetary pinwheel both sides also arrange respectively link press span, be connected by the decussation roller assembly between link press span periphery and the hypocycloid pin wheel housing, eccentric shaft by bearing assemble in the bearing hole of link press span.
2. hypocycloid planetary pinwheel speed reducer according to claim 1, it is characterized in that, described decussation roller assembly comprises roller and retainer, retainer is round structure, according to circumferencial direction, be evenly distributed with a plurality of rollers on the retainer, the circular end surface of adjacent two rollers is mutually vertical, a plurality of roller cross-distribution.
3. hypocycloid planetary pinwheel speed reducer according to claim 1 is characterized in that, adopts the gear pin of half buried structure to be connected between described planetary pinwheel and the hypocycloid pin wheel housing, and gear pin directly is assemblied on the semicircle orifice of planetary pinwheel.
4. hypocycloid planetary pinwheel speed reducer according to claim 3, it is characterized in that, described planetary pinwheel has two, and the eccentric circle at the corresponding bearing place that two planetary pinwheels are connected with eccentric shaft is staggered 180 °, between two planetary pinwheels the needle pin dottle pin is set.
5. hypocycloid planetary pinwheel speed reducer according to claim 4 is characterized in that, two outsides of described two planetary pinwheels arrange respectively link press span, is left link press span and right link press span.
6. hypocycloid planetary pinwheel speed reducer according to claim 1 is characterized in that, adopts two keys to be connected between described planet wheel and the eccentric shaft, and key and planet wheel are the integral type structure, and keyway is located on the eccentric shaft.
CN 201220482942 2012-09-20 2012-09-20 Reduction gear of hypocycloid planetary pin wheel CN202833880U (en)

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Application Number Priority Date Filing Date Title
CN 201220482942 CN202833880U (en) 2012-09-20 2012-09-20 Reduction gear of hypocycloid planetary pin wheel

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Application Number Priority Date Filing Date Title
CN 201220482942 CN202833880U (en) 2012-09-20 2012-09-20 Reduction gear of hypocycloid planetary pin wheel

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CN202833880U true CN202833880U (en) 2013-03-27

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104565217A (en) * 2013-10-28 2015-04-29 北京配天技术有限公司 Cycloidal pin wheel speed reducer and robot
CN104565216A (en) * 2013-10-28 2015-04-29 北京配天技术有限公司 Cycloidal pin wheel speed reducer and robot
CN104913009A (en) * 2014-03-12 2015-09-16 住友重机械工业株式会社 Eccentric swinging type gear device
CN105065584A (en) * 2015-08-19 2015-11-18 英瑞克自动化有限公司 Hypocycloid speed reducer
CN105508515A (en) * 2016-02-01 2016-04-20 武汉市精华减速机制造有限公司 Coaxial direct-connection speed reducer
CN105526314A (en) * 2016-02-01 2016-04-27 武汉市精华减速机制造有限公司 Direct-connected offset reducer
CN106015468A (en) * 2016-07-25 2016-10-12 广州市昊志机电股份有限公司 RV speed reducer with crossed roller bearings
CN108892008A (en) * 2018-06-29 2018-11-27 西安交通大学 A kind of electronic reel of close-coupled

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104565217A (en) * 2013-10-28 2015-04-29 北京配天技术有限公司 Cycloidal pin wheel speed reducer and robot
CN104565216A (en) * 2013-10-28 2015-04-29 北京配天技术有限公司 Cycloidal pin wheel speed reducer and robot
CN104913009A (en) * 2014-03-12 2015-09-16 住友重机械工业株式会社 Eccentric swinging type gear device
CN105065584A (en) * 2015-08-19 2015-11-18 英瑞克自动化有限公司 Hypocycloid speed reducer
CN105508515A (en) * 2016-02-01 2016-04-20 武汉市精华减速机制造有限公司 Coaxial direct-connection speed reducer
CN105526314A (en) * 2016-02-01 2016-04-27 武汉市精华减速机制造有限公司 Direct-connected offset reducer
CN106015468A (en) * 2016-07-25 2016-10-12 广州市昊志机电股份有限公司 RV speed reducer with crossed roller bearings
CN108892008A (en) * 2018-06-29 2018-11-27 西安交通大学 A kind of electronic reel of close-coupled
CN108892008B (en) * 2018-06-29 2019-10-11 西安交通大学 A kind of electronic reel of close-coupled

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