CN100560307C - The active Wrist mechanism that is used for mechanical arm or snake-shaped robot - Google Patents
The active Wrist mechanism that is used for mechanical arm or snake-shaped robot Download PDFInfo
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- CN100560307C CN100560307C CNB200710046467XA CN200710046467A CN100560307C CN 100560307 C CN100560307 C CN 100560307C CN B200710046467X A CNB200710046467X A CN B200710046467XA CN 200710046467 A CN200710046467 A CN 200710046467A CN 100560307 C CN100560307 C CN 100560307C
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Abstract
A kind of two rotational freedoms active Wrist mechanism that is used for the small-sized machine arm or the robot that crawls belongs to field of mechanical technique.Among the present invention, the motor that places two motor sleeve inside respectively with two fixedly end cap fix.Two bevel gears and two gear wheels are fixedlyed connected with the output shaft of motor simultaneously.Two gear wheels again respectively be fixed on two pinion on the potentiometric output shaft.Two scalloped end face cone gears are affixed with two axles of cross coupling spindle respectively, bevel gear and scalloped end face cone gears engaged.Four supports are fixed on up and down respectively symmetrically, and two stiff ends cover.Bellows connects two fixedly end caps, forms a complete airtight mechanism.The present invention moulded small and exquisite, outward appearance is regular and weight is light and handy, transmission system is simple, structure is more compact, orientation capability is good, the encapsulation of actuated element and driving element is good, the degree of modularity is high, is convenient to the system integration.
Description
Technical field
What the present invention relates to is a kind of device of field of mechanical technique, specifically, is a kind of active Wrist mechanism that is used for mechanical arm or snake-shaped robot.
Background technology
At present, aspect production and life, especially in hazardous environment and extreme environment operation, there is very application prospects in robot as a kind of special machine that the mankind create.Robot is just replacing people being engaged in various work, such as certain objects is accurately located, operation such as detection, imaging or rescue.The robot wrist is the parts that connect end-effector and mechanical arm, and its main effect is the orientation of regulating or change workpiece, so it has the independently free degree, so that robot end's operator adapts to complicated action request.Typical robot wrist has two classes: (1) is directly driven by hydraulic motor and constitutes; (2) constitute by gear drive.Using more now is the 3DOF wrist, its mostly adopts multiaxis differential train to constitute, and various robot wrists are existing the driving member complexity in varying degrees, can reach that area of space is little, the attitude positioning accuracy is not high, make difficulty and the not high shortcoming of the degree of modularity.
Through the literature search of prior art is found, number of patent application is 02129665.0 and is called " driving robot wrist ", this art designs a kind of two～three-rotational-freedom driving robot wrist.This wrist is by last rotary body, down rotary body and output constitute, and the described rotary body of going up connects by bearing with following rotary body, and its inside is provided with double universal coupler, and output is sleeved on the output shaft and with last rotary body and is connected.Though the three-rotational-freedom driving robot wrist has been selected the kind of drive of " universal coupling is nested with bevel gear-face gear " for use in this invention, and two rotational freedom wrists have been removed bevel gear---Meshing Pair and respective drive structure that face gear constitutes, robot wrist inside also be provided with slippage secondary and make with the light metal alloy material described on rotary body and following rotary body, make that this driving robot wrist running is more flexible, light, and structure shows compact slightly than other structure, orientation capability is good, degree of modularity height, be convenient to advantages such as the system integration, but this mechanism's complicated integral structure and compact inadequately, the formation principle complexity of rotational freedom, the irregular encapsulation property that causes of outward appearance is bad, so that the practicality of above-mentioned technology is high not enough and be subjected to very big restriction.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of amount of parts few, simple and compact for structure, the degree of modularity is higher and can realize the active Wrist mechanism that is used for mechanical arm or snake-shaped robot of plug and play, has solved the problem that robot wrist's transmission system complexity, structure are compact inadequately in the prior art, the degree of modularity is not high.
The present invention is achieved through the following technical solutions.The present invention includes: two motors, two bevel gears, two gear wheels, two pinions, two potentiometers, two scalloped end face cone gears, cross coupling spindle, four supports, two fixedly end cap, two motor sleeve, two union ends, bellowss.The motor that places two motor sleeve inside respectively with two fixedly end cap fix.Two bevel gears and two gear wheels are fixedlyed connected with the output shaft of motor simultaneously.Two gear wheels again respectively be fixed on two pinion on the potentiometric output shaft to detect the angular displacement in joint.Two axles of cross coupling spindle are 90 degree and intersect.Two scalloped end face cone gears are affixed with two axles of cross coupling spindle respectively, bevel gear and scalloped end face cone gears engaged.The cross coupling spindle connects support by four identical supports, can rotate freely.Four supports are fixed on up and down respectively symmetrically, and two stiff ends cover.Bellows connects two fixedly end caps, forms a complete airtight mechanism.The present invention has laterally zygomorphic two rotational freedom structures, by the transmission order of motor, bevel gear, fan-shaped face gear, cross coupling spindle, two that drive the cross coupling spindle respectively are pitching and two rotational freedoms of swing that the crossing axle of 90 degree is realized whole module.
Driving robot wrist among the present invention has not only been selected the kind of drive of " the cross coupling spindle is nested with bevel gear one scalloped end face cone gear " for use, promptly the cross coupling spindle nested with fan-shaped section gear affixed and by bevel gear and and fan-shaped section gear meshing come the rotation of " directly " driving cross coupling spindle, and realized the blocking and the modularization of the higher degree of wrist joint.Its outstanding advantage is: moulded small and exquisite, outward appearance is regular and weight is light and handy, structure is more compact, orientation capability is good, the encapsulation of actuated element and driving element is good, the degree of modularity is high, the system integration of being more convenient for.The mechanism that two rotational freedom structures are arranged among the present invention promptly can be used as individual module and uses, and also can constitute binary end effector by connecting with robot body, perhaps is connected in series more module and is used for snake-shaped robot.
The present invention utilizes the characteristics of cross coupling spindle structure will be not directly not carry out 90 degree at same axis or two bigger axles of the bigger or axial offset distance of axis knuckle to intersect, and realize that motor rotates and the linear relationship of joint angles, transmitting torque and motion reliably simultaneously.Have compact conformation, the transmission efficiency height is maintained outstanding advantages such as convenient.Especially the kind of drive of " cross coupling spindle and bevel gear---fan-shaped face gear is nested " has improved integrally-built compactedness especially, packing of bellows makes entire mechanism seal fully in addition, overall appearance is rule succinctly, improve the practicality of this mechanism greatly, remedied the deficiency of conventional art.
Description of drawings
Fig. 1 is the structural representation of active Wrist mechanism;
Fig. 2 is the structural representation of active Wrist mechanism;
Fig. 3 makes the schematic diagram of pitching and wobbling action for the active Wrist mechanism.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is to be to implement under the prerequisite with the technical solution of the present invention; provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: two motors 1 and 13, two bevel gears 2 and 14, two gear wheels 3 and 15, two pinions 4 and 16, two potentiometers 5 and 17, two scalloped end face cone gears 6 and 18, cross coupling spindle 7, four supports 8 (wherein two be an angle of 90 degrees with two other be arranged in stiff end respectively and cover), two fixedly end cap 9 and 19, two motor sleeve 10 and 20, two union ends 11 and 21, bellowss 12.Two motor sleeve 10 and 20 cross section are hollow tube-shape.Above second pinion 16 and second potentiometer 7 invisible in Fig. 1.
In the described active wrist, two identical in structure articulation are on the axle that 90 degree intersect two of cross coupling spindle 7.Each parts interconnected relationship is: for following joint, first motor 1 is positioned over first motor sleeve, 10 inside and fixedly end cap 9 is fixing with first.Be fixed on the output shaft of first motor 1 with first bevel gear, 2 affixed first gears 3, first bevel gear 2 meshes with the first scalloped end face cone gear 6 again.And first gear 3 and the engagement of first pinion 4,4 of first pinions are fixed on the output shaft of first potentiometer 5, and first potentiometer 5 is installed in first fixedly on the end cap 9.Be fixed on the axle vertical cross coupling spindle 7 with the first scalloped end face cone gear 6 of first bevel gear 2 engagement with paper as shown in Figure 1, and this be fixed on first fixedly wherein two supports of the support 8 of end cap 9 connect.For top joint, second motor 13 is positioned over second motor sleeve, 20 inside and fixedly end cap 19 is fixing with second.Be fixed on the output shaft of second motor 13 with second bevel gear, 14 affixed second largest gears 15, second bevel gear 14 meshes with the second scalloped end face cone gear 18 again.And second largest gear 15 and the engagement of second pinion 16, second pinion 16 is fixed in again on the output shaft of second potentiometer 7, and 7 of second potentiometers are installed in second fixedly on the end cap 19.Be fixed on cross coupling spindle 7 and the axle as shown in Figure 1 with the second scalloped end face cone gear 18 of second bevel gear 14 engagement, and this be fixed on second fixedly the support 8 of end cap 19 connect.At last by bellows 12 be fixed in respectively on two motor sleeve 10 and 20 two fixedly end cap 9 and 19 seal, and two union ends 11 and 21 are used for being connected other joint.
Said mechanism two by the cross coupling spindle are the rotations of the axle that 90 degree intersect, and connect end effector at union end, come implementation space two degrees of freedom to rotate.The output shaft of first motor 1 by key with the 2 affixed rotations of first bevel gear.First bevel gear 2 meshes with the first scalloped end face cone gear 6 again, and the first scalloped end face cone gear 6 is fixed on the axle perpendicular to paper as shown in Figure 1 of cross coupling spindle 7, described axle be fixed on first fixedly the fixed support 8 on the end cap 9 connect, thereby realize that cross coupling spindle 7 winds the rotation perpendicular to as shown in Figure 1 paper direction, the oscillating motion of this Wrist mechanism is finished in the rotation that drives top joint as shown in Figure 1 then.The first gear 3 that is fixed on first bevel gear 2 meshes with first pinion 4 that is fixed on first potentiometer 5 again, so that detect the angular displacement in the joint of doing oscillating motion.Similarly, the output shaft of second motor 13 is affixed and rotate with second bevel gear 14 by key, second bevel gear 14 meshes with the second scalloped end face cone gear 18 again, and the second scalloped end face cone gear 18 is fixed on the horizontal direction axle of paper as shown in Figure 1 of cross coupling spindle 7, described axle again be fixed on second fixedly the fixed support 8 on the end cap 19 connect, thereby realize the rotation of cross coupling spindle 7 around the horizontal direction of as shown in Figure 1 paper, the elevating movement of this Wrist mechanism is finished in the rotation that drives following joint as shown in Figure 1 then.The second largest gear 15 that is fixed on second bevel gear 14 meshes with second pinion 16 that is fixed on second potentiometer 7 again, so that detect the angular displacement in the joint of doing elevating movement.
Claims (3)
1, a kind of active Wrist mechanism that is used for mechanical arm or snake-shaped robot, comprise: two motors, two bevel gears, two gear wheels, two pinions, two potentiometers, two scalloped end face cone gears, the cross coupling spindle, four supports, two fixing end caps, two motor sleeve, two union ends, a bellows, it is characterized in that: two motors place respectively two corresponding motor sleeve inner and respectively with corresponding two fixedly end cap fix, a bevel gear is fixedlyed connected with the output shaft of a motor together with a gear wheel, another bevel gear is fixedlyed connected with the output shaft of another motor together with another gear wheel, two pinions are separately fixed on two potentiometric output shafts, two gear wheels respectively with two pinion to detect the angular displacement in joint, two scalloped end face cone gears engaged that bevel gear is corresponding with two respectively, two scalloped end face cone gears are affixed with two axles of cross coupling spindle respectively, four supports wherein two supports and one fixedly end cap fix, two other support and another fixedly end cap are fixed, bellows connects two fixedly end caps, forms a complete airtight mechanism.
2, the active Wrist mechanism that is used for mechanical arm or snake-shaped robot according to claim 1 is characterized in that, two axles of described cross coupling spindle are 90 degree and intersect.
3, the active Wrist mechanism that is used for mechanical arm or snake-shaped robot according to claim 1 and 2 is characterized in that, described cross coupling spindle connects support by four supports, and these four supporting structures are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710046467XA CN100560307C (en) | 2007-09-27 | 2007-09-27 | The active Wrist mechanism that is used for mechanical arm or snake-shaped robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710046467XA CN100560307C (en) | 2007-09-27 | 2007-09-27 | The active Wrist mechanism that is used for mechanical arm or snake-shaped robot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101130245A CN101130245A (en) | 2008-02-27 |
| CN100560307C true CN100560307C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710046467XA Expired - Fee Related CN100560307C (en) | 2007-09-27 | 2007-09-27 | The active Wrist mechanism that is used for mechanical arm or snake-shaped robot |
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| CN (1) | CN100560307C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059791A1 (en) | 2010-11-05 | 2012-05-10 | Rīgas Tehniskā Universitāte | Robotic snake-like movement device |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2929875B1 (en) * | 2008-04-09 | 2012-01-13 | Aldebaran Robotics | MOTORIZED JOINT HAVING TWO PIVOT LINKS AND HUMANOID ROBOTS IMPLEMENTING THE ARTICULATION |
| CN101695833B (en) * | 2009-10-22 | 2011-05-04 | 重庆交通大学 | Vane wheel type snake-like robot |
| CN101927497B (en) * | 2010-07-30 | 2012-02-01 | 华南理工大学 | Rotating and swinging joint module of robot of single degree of freedom |
| CN102554935A (en) * | 2012-03-08 | 2012-07-11 | 南京埃斯顿机器人工程有限公司 | Low load wrist transmission mechanism for industrial robot |
| CN103612258B (en) * | 2013-12-16 | 2015-08-19 | 武汉科技大学 | A kind of joint of robot of snakelike hydraulic pressure fire extinguishing |
| CN104015182B (en) * | 2014-05-20 | 2016-06-01 | 郑天江 | A kind of snake-shaped robot |
| CN104742152A (en) * | 2015-04-02 | 2015-07-01 | 中国科学院合肥物质科学研究院 | Tandem type multi-joint mechanical arm |
| CN106003134B (en) * | 2016-05-26 | 2020-09-29 | 中国科学院等离子体物理研究所 | Rotary joint used in vacuum high-temperature environment |
| CN109015612B (en) * | 2018-08-13 | 2021-07-23 | 深圳市金伍源实业有限公司 | Thread swinging type chain robot |
| CN111002300B (en) * | 2020-03-10 | 2020-06-16 | 山东华宜同创自动化科技有限公司 | Manipulator with high flexibility and low precision requirement |
| CN112338950B (en) * | 2020-09-23 | 2024-05-03 | 南昌大学 | Small part grabbing and installing manipulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574655A (en) * | 1984-07-16 | 1986-03-11 | Kabushiki Kaisha Yasakawa Denki Seisakusho | Wrist mechanism for industrial robot |
| US4862759A (en) * | 1987-02-23 | 1989-09-05 | The University Of Western Australia | Wrist mechanism for robotic manipulations |
-
2007
- 2007-09-27 CN CNB200710046467XA patent/CN100560307C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574655A (en) * | 1984-07-16 | 1986-03-11 | Kabushiki Kaisha Yasakawa Denki Seisakusho | Wrist mechanism for industrial robot |
| US4862759A (en) * | 1987-02-23 | 1989-09-05 | The University Of Western Australia | Wrist mechanism for robotic manipulations |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059791A1 (en) | 2010-11-05 | 2012-05-10 | Rīgas Tehniskā Universitāte | Robotic snake-like movement device |
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| CN101130245A (en) | 2008-02-27 |
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Granted publication date: 20091118 Termination date: 20120927 |