CN105798937A - Axial spiral synchronous locking self-adaptive robot finger device - Google Patents
Axial spiral synchronous locking self-adaptive robot finger device Download PDFInfo
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- CN105798937A CN105798937A CN201610139962.4A CN201610139962A CN105798937A CN 105798937 A CN105798937 A CN 105798937A CN 201610139962 A CN201610139962 A CN 201610139962A CN 105798937 A CN105798937 A CN 105798937A
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- segment
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- nut slider
- joint shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/02—Gripping heads and other end effectors servo-actuated
- B25J15/0253—Gripping heads and other end effectors servo-actuated comprising parallel grippers
- B25J15/0286—Gripping heads and other end effectors servo-actuated comprising parallel grippers actuated by chains, cables or ribbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/0009—Gripping heads and other end effectors comprising multi-articulated fingers, e.g. resembling a human hand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/02—Gripping heads and other end effectors servo-actuated
- B25J15/0253—Gripping heads and other end effectors servo-actuated comprising parallel grippers
- B25J15/026—Gripping heads and other end effectors servo-actuated comprising parallel grippers actuated by gears
Abstract
The invention provides an axial spiral synchronous locking self-adaptive robot finger device and belongs to the technical field of robot hands. The axial spiral synchronous locking self-adaptive robot finger device comprises a motor, a plurality of finger sections, a plurality of joint shafts, a plurality of spring pieces, a tendon rope, a rope drawing piece, a plurality of joint wheels, a plurality of sets of nut sliding blocks and screws, and a plurality of sets of wheel type transmission mechanisms. According to the axial spiral synchronous locking self-adaptive robot finger device, the functions of self-adaptive grabbing and continuous and synchronous locking of a plurality of joints are achieved comprehensively through the motor, the tendon rope, the spring pieces, the wheel type transmission mechanisms and threaded transmission mechanisms. The axial spiral synchronous locking self-adaptive robot finger device is used for grabbing objects and can automatically adapt to the shapes and sizes of the objects. A joint locking mode or a non-locking mode can be adopted after the objects are grabbed. The grabbing process is fast and stable, the joints are locked after grabbing, a finger is protected against rebounding and instability, and large grabbing force can be provided. The multiple joints can be locked synchronously. The angles of the joints capable of being locked are continuous. The axial spiral synchronous locking self-adaptive robot finger device is simple in structure, small in size, low in weight, easy to control, and low in design, manufacturing, assembling and maintenance cost.
Description
Technical field
The invention belongs to robot technical field, particularly to the structural design of the dynamic helical synchronous locking adaptive robot finger apparatus of a kind of axle.
Background technology
Robot is one of most important assembly of robot, and the key technology such as the structural design of robot and function improvement is most important for robot.Existing robot can be divided mainly into anthropomorphic hands and non-anthropomorphic hands, both has application widely.Owing to the hands of people is very flexible, powerful, bionics there is very big research learning be worth, the exploitation of humanoid robot hand has very big prospect.Current humanoid robot hand is broadly divided into industry clamper, Dextrous Hand and drive lacking hands.
On the one hand, robot needs to realize to capture, carrying and operation difformity and the complex object of size, and this requires higher for the aspect such as control accuracy of robot；On the other hand, humanoid robot hand requires the features such as size to fit, weight are little.Existing industry clamper function is simple, and the scope of application is less.Existing Dextrous Hand has enough joints and driver to complete various accurate action, but extremely complex and expensive.And drive lacking hands to some extent solves this contradiction due to the feature such as adaptivity of self.
Drive lacking hands volume with features such as self adaptations is little, lightweight, can change crawl angle and automatically adapt to the shape of object with this in the process capturing object, controls simple, accurate, stable.
The robot device (patent of invention US2006129248A1) of existing a kind of self-adapting grasping object, finger part mainly includes pedestal, four segments, three spring parts and a tendon rope.When capturing object, first pull tendon rope that finger is stretched, then loosen tendon rope, rely on spring part natural resiliency to make digital flexion envelope capture object.Owing to each joint has spring part, finger can matching object shape bend according to respective angles in the process capturing object, has good adaptivity.
This device is disadvantageous in that:
1) the spring part grasp force of this device as far as possible big and stretch the pulling force of tendon rope used by finger try one's best little between there is bigger contradiction.In order to ensure that grasp force is bigger, it is necessary to spring part stiffness factor relatively big, cause that the pulling force needed for pulling tendon rope to stretch finger is bigger；Pulling force needed for stretching finger to tendon rope is less, adopts more weak spring part, then grasp force is too small.
2) this device is difficult to provide larger range of grasp force.This device adopts fixing spring part, it is provided that grasp force be confined in the smaller range fixed；This device relies primarily on the grasp force that spring part provides in capturing object process, if spring part is more weak, just cannot utilize the strength of the arm being attached thereto, can occur when extracting weight to capture to lose efficacy, when such as extracting very heavy luggage case, it is generally adopted arm strength to extract, but finger to have enough strength to guarantee the configuration of bending.
3) the spring part of excessive stiffness factor occurs finger quickly to collide object when may result in capturing object, thus causing squeezing the unstable phenomenon running object.
4) this device uses under vibration to have and captures the possibility lost efficacy.
Existing a kind of self-locking pneumatic under-actuated robot finger device (patent of invention CN103659825A), this device has self-adapting grasping function, adopts click to realize the self-locking in crawl process, and adopts motor to pull ratchet to realize unlocking.
This device is disadvantageous in that:
1) this device needs motive force and could realize self adaptation bending.This motive force is from the relative motion of finger Yu object: is extruded the slide block on finger by object, utilizes pneumatic power drive to promote next segment to bend.
2) the lockable joint angles of this device is discontinuous.Owing to the gear teeth of ratchet have certain tooth pitch, lock discontinuous；If tooth pitch is designed to relatively conference reduces locking precision, if tooth pitch is designed to less, then can reduce tooth depth, affect locking effect.
Summary of the invention
The invention aims to overcome the weak point of prior art, it is proposed to the dynamic helical synchronous locking adaptive robot finger apparatus of a kind of axle, this device is used for capturing object, it is possible to automatically adapt to the shape of object, size；Capture and can take locking articulated manner or not lock mode after object；Lock joint after crawl, it is provided that bigger grasp force, it is prevented that finger resilience unstability, there is self-locking effect；Can the multiple joint of genlocing；Lockable joint angles is continuous print；This apparatus structure is simple, lightweight, controls easily.
The present invention adopts the following technical scheme that
The dynamic helical synchronous locking adaptive robot finger apparatus of axle provided by the invention, including motor, decelerator, the first drive mechanism, tendon rope, stay cord part, N number of segment, N-1 joint shaft, N-1 spring part and N-1 joint wheel；Described motor and first segment are affixed；The output shaft of described motor is connected with the power shaft of decelerator, and the output shaft of described decelerator and the input of the first drive mechanism are connected, and the outfan of described first drive mechanism is connected with stay cord part；Described stay cord part slides or rotates and is arranged in the first segment；One end of described tendon rope is connected with stay cord part, and the other end of tendon rope is connected with last segment；Described tendon rope walks around all joints wheel, all segments that the traverse of tendon rope is middle；Described i-th joint shaft is set in i-th segment, and described i+1 segment is socketed on i-th joint shaft, and described i-th joint wheel is socketed on i-th joint shaft, and the two ends of described i-th spring part connect i-th segment and i+1 segment respectively；All described joint shafts are parallel to each other；It is characterized in that: this device includes N-1 nut slider, N-1 screw rod, the second drive mechanism, N-2 drivewheel, N-2 driven pulley and N-2 driving member；The output shaft of described decelerator and the input of the second drive mechanism are connected, the outfan of described second drive mechanism and the first joint shaft are connected, described jth drivewheel is fixed on jth joint shaft, described jth driven pulley is fixed on+1 joint shaft of jth, and described jth driving member connects jth drivewheel and jth driven pulley；Described jth driving member adopts transmission band, transmission rope or chain；Described jth drivewheel adopts belt wheel, rope sheave or sprocket wheel, and described jth driven pulley adopts belt wheel, rope sheave or sprocket wheel, can cooperatively form drive connection between described jth driving member, jth drivewheel and jth driven pulley three；Described i-th joint shaft is affixed with i-th screw rod, and the centrage of described i-th joint shaft overlaps with the centrage of i-th screw rod；Described i-th nut slider slides and is embedded in i-th segment, the threaded i-th screw rod of i-th nut slider, and namely i-th nut slider forms screw-driven relation by intrinsic screwed hole on it with i-th screw rod；Described i-th nut slider contacts with i+1 segment or stands away；Wherein, N is the natural number more than 1, and i is 1,2 ... or N-1, j be 1,2 ... or N-2.
The dynamic helical synchronous locking adaptive robot finger apparatus of axle of the present invention, it is characterised in that: entirety or the local of described nut slider adopt elastomeric material.
The dynamic helical synchronous locking adaptive robot finger apparatus of axle of the present invention, it is characterised in that: the local surfaces of described nut slider is rough surface.
The present invention compared with prior art, has the following advantages and salience effect:
Motor, tendon rope, spring part, wheel type driving mechanism and thread transmission should be utilized comprehensively to realize self-adapting grasping and the function in the multiple joints of continuous synchronization locking by device.This device is used for capturing object, it is possible to automatically adapt to the shape of object, size, adaptable；Capture and can take locking articulated manner or not lock mode after object, especially the object of unlike material, weight is had very strong adaptive capacity；Crawl process fast and stable, locks joint, prevents finger resilience unstability on the one hand after crawl so that do not have collision object when capturing object, squeeze and run object；On the other hand, can providing bigger grasp force, locking device has self-locking effect, and the finger apparatus after locking can be similar to regards a rigid body as, its bearing capacity aspect can mate the arm apparatus being attached thereto better, implements the extraction to relatively heavy object (such as luggage case)；Can the multiple joint of genlocing；Lockable joint angles is continuous print；This apparatus structure is simple, and volume is little, lightweight, controls easily, design, manufacture, I& M cost low.
Accompanying drawing explanation
Fig. 1 is the front section view of a kind of embodiment of the dynamic helical synchronous locking adaptive robot finger apparatus of axle provided by the invention.
Fig. 2 is outside drawing after embodiment illustrated in fig. 1.
Fig. 3 is the right flank outside drawing of embodiment illustrated in fig. 1.
The tendon rope that Fig. 4 to Fig. 6 is embodiment illustrated in fig. 1 pulls schematic diagram.
Fig. 7 is embodiment illustrated in fig. 1 the second spring part sectional view.
The axle two that Fig. 8 is locking device on second joint axle measures intention.
Fig. 9 to Figure 10 is second joint axle place's non-locking and lock-out state sectional view.
Figure 11 is Figure 13 is the schematic diagram of illustrated embodiment self-adapting grasping object.
Figure 14 is Figure 17 be illustrated embodiment self adaptation grasp large scale difformity object schematic diagram.
Figure 18 to Figure 19 is the schematic diagram of illustrated embodiment genlocing self-adapting grasping weight.
In Fig. 1 to Figure 19:
11-the first segment, 12-the second segment, 13-the 3rd segment,
21-motor, 22-decelerator, 23-drive bevel gear, 24-driven wheel of differential,
25-transition axis, 26-First Transition is taken turns, 27-the second transition wheel, 28-transition driving member,
31-tendon rope, 32-stay cord part,
41-the first spring part, 42-the second spring part,
51-the first drivewheel 52-the first driven pulley, 53-the first driving member,
61-the first joint shaft, 611-the first screw rod, 62-second joint axle, 621-the second screw rod,
63-bearing,
711-the first nut slider, 712-the first brake pad, 721-the second nut slider, 722 second brake pads,
81 objects, 82-bearing-surface.
Detailed description of the invention
The concrete structure of the present invention, operation principle and work process is further described below in conjunction with drawings and Examples.
The dynamic helical synchronous locking adaptive robot finger apparatus of axle provided by the invention, including motor, decelerator, the first drive mechanism, tendon rope, stay cord part, N number of segment, N-1 joint shaft, N-1 spring part and N-1 joint wheel；Described motor and first segment are affixed；The output shaft of described motor is connected with the power shaft of decelerator, and the output shaft of described decelerator and the input of the first drive mechanism are connected, and the outfan of described first drive mechanism is connected with stay cord part；Described stay cord part slides or rotates and is arranged in the first segment；One end of described tendon rope is connected with stay cord part, and the other end of tendon rope is connected with last segment；Described tendon rope walks around all joints wheel, all segments that the traverse of tendon rope is middle；Described i-th joint shaft is set in i-th segment, and described i+1 segment is socketed on i-th joint shaft, and described i-th joint wheel is socketed on i-th joint shaft, and the two ends of described i-th spring part connect i-th segment and i+1 segment respectively；All described joint shafts are parallel to each other；It is characterized in that: this device includes N-1 nut slider, N-1 screw rod, the second drive mechanism, N-2 drivewheel, N-2 driven pulley and N-2 driving member；The output shaft of described decelerator and the input of the second drive mechanism are connected, the outfan of described second drive mechanism and the first joint shaft are connected, described jth drivewheel is fixed on jth joint shaft, described jth driven pulley is fixed on+1 joint shaft of jth, and described jth driving member connects jth drivewheel and jth driven pulley；Described jth driving member adopts transmission band, transmission rope or chain；Described jth drivewheel adopts belt wheel, rope sheave or sprocket wheel, and described jth driven pulley adopts belt wheel, rope sheave or sprocket wheel, can cooperatively form drive connection between described jth driving member, jth drivewheel and jth driven pulley three；Described i-th joint shaft is affixed with i-th screw rod, and the centrage of described i-th joint shaft overlaps with the centrage of i-th screw rod；Described i-th nut slider slides and is embedded in i-th segment, the threaded i-th screw rod of i-th nut slider, and namely i-th nut slider forms screw-driven relation by intrinsic screwed hole on it with i-th screw rod；Described i-th nut slider contacts with i+1 segment or stands away；Wherein, N is the natural number more than 1, and i is 1,2 ... or N-1, j be 1,2 ... or N-2.
Take N=3, embodiment is given below and is described in detail.
A kind of embodiment of the dynamic helical synchronous locking adaptive robot finger apparatus of axle of present invention design, as shown in Figure 1, Figure 2 and Figure 3, including first segment the 11, second segment the 12, the 3rd segment 13, motor 21, decelerator the 22, first drive mechanism, tendon rope 31, stay cord part the 32, first spring part the 41, second spring part the 42, first joint shaft 61, second joint axle 62 and 2 joint wheels (directly adopting joint shaft to take turns as joint in the present embodiment)；Described motor 21 and the first segment 11 are affixed；The output shaft of described motor 21 is connected with the power shaft of decelerator 22, and the output shaft of described decelerator 22 and the input of the first drive mechanism are connected, and the outfan of described first drive mechanism is connected with stay cord part 32；Described stay cord part 32 rotates and is arranged in the first segment 11；One end of described tendon rope 31 is connected with stay cord part 32, and the other end and the 3rd segment 13 of tendon rope 32 are connected；All joints wheel (the joint wheel in the present embodiment directly adopts joint shaft) walked around by described tendon rope 31, and tendon rope 31 walks around the first joint shaft 61 and second joint axle 62, all segments that tendon rope 31 traverse is middle；Described first joint shaft 61 is set in the first segment 11, and described second joint axle 62 is set in the second segment 62；Described second segment 12 is socketed on the first joint shaft 61, and described 3rd segment 13 is socketed on second joint axle 62；The two ends of described first spring part 41 connect the first segment 11 and the second segment 12 respectively, and the two ends of described second spring part 42 connect the second segment 12 and the 3rd segment 13 respectively；All described joint shafts are parallel to each other；This device also includes first nut slider the 711, second nut slider the 721, first brake pad the 712, second brake pad 722, First Transition wheel the 26, second transition wheel 27, transition driving member the 28, first drivewheel the 51, first driven pulley the 52, first driving member 53；The output shaft of described decelerator 22 and the input of the second drive mechanism are connected, outfan and first joint shaft 61 of described second drive mechanism are connected, described first drivewheel 51 is fixed on the first joint shaft 61, described first driven pulley is fixed on second joint axle, and described first driving member connects the first drivewheel and the first driven pulley；Described first driving member adopts transmission band；Described first drivewheel 51 adopts belt wheel, described first driven pulley 52 to adopt belt wheel, can cooperatively form drive connection between described first driving member the 53, first drivewheel 51 and the first driven pulley 52 three；Described first joint shaft 61 and the first screw rod 611 are affixed, and described second joint axle 62 and the second screw rod 621 consolidate, and the centrage of all described joint shafts overlaps with the centrage of corresponding screw rod；Described first nut slider 711 slides and is embedded in the first segment 11, second nut slider 721 slides and is embedded in the second segment 12, threaded first screw rod 611 of first nut slider 711, namely the first nut slider 711 forms screw-driven relation by intrinsic screwed hole on it and the first screw rod 611, threaded second screw rod 621 of second nut slider 721, namely the second nut slider 721 forms screw-driven relation by intrinsic screwed hole on it and the second screw rod 621；Described motor 21 is rotating backward the described stay cord part 32 of driving in the motor process loosening tendon rope 31, by driving the first joint shaft 61 and second joint axle 62 to rotate backward, the first nut slider 711 threadeded with the first screw rod 611 and the second screw rod 621 and the second nut slider 721 is made to slide to the first brake pad 712 and the second brake pad 722 direction respectively；Described first brake pad 712 is fixed in the second segment 12, and described first nut slider 711 contacts with the first brake pad 712 or stands away；Described second brake pad 722 is fixed in the 3rd segment 13, and described second nut slider 721 contacts with the second brake pad 722 or stands away.
Described first nut slider 711 slides and is embedded in the first segment 11, refers to: described first nut slider 711 can not rotate around the centrage of the first joint shaft 61, and the first nut slider 711 can only slide along the centrage of the first joint shaft 61.
In like manner, described second nut slider 721 slides and is embedded in the second segment 12, it may be assumed that described second nut slider 721 can not rotate around the centrage of second joint axle 62, and the second nut slider 721 can only slide along the centrage of second joint axle 62.
In the present embodiment, described first spring part 41 and the second spring part 42 are torsion spring, and described stay cord part 32 is reel.
The dynamic helical synchronous locking adaptive robot finger apparatus of axle of the present invention, it is characterised in that: entirety or the local of described nut slider adopt elastomeric material.In the present embodiment, described nut slider and brake pad adopt elastomeric material.
In another embodiment, the surface that described nut slider and brake pad contact is rough surface.
In the present embodiment, described first drive mechanism includes drive bevel gear 23, driven wheel of differential 24 and transition axis 25；Described power transmission shaft 25 is set in the first segment 11, and described stay cord part 32 is fixed on transition axis 25, and one end of described tendon rope 31 is fixed in the outer rim of stay cord part 32；Described first drivewheel 26 is socketed on power transmission shaft 25.
In the present embodiment, described second drive mechanism includes drive bevel gear 23, driven wheel of differential 24, transition axis 25, First Transition wheel the 26, second transition wheel 27 and transition driving member 28；Described power transmission shaft 25 is set in the first segment 11, and described First Transition wheel 26 is fixed on transition axis 25, and described second transition wheel 27 is fixed on the first joint shaft 26；Drive connection can be cooperatively formed between described First Transition wheel the 26, second transition wheel 27 and transition driven member 28 three.
Shown in the operation principle of the present embodiment such as Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, it is described below:
Fig. 4 to Fig. 6 mainly have expressed this finger apparatus and captures the Principle of Process schematic diagram of object.First motor 21 starts, and drives stay cord part 32 to rotate through decelerator 22, drive bevel gear 23, driven wheel of differential 24 and transition axis 25 so that tendon rope 31 is tightened up, and finger is stretched to straight configuration by case of bending, prepares to capture object；Then motor 21 rotates backward so that stay cord part and then rotates backward, and now tendon rope 31 is relaxed, and the elastic force of the first spring part 41 and the second spring part 42 makes finger be gradually curved；After tendon rope 31 is loosened completely, when not capturing object, finger bends to the state of holding with a firm grip completely, now motor 21 then rotates, the first joint shaft 61 and second joint axle 62 is driven to rotate backward by the second drive system, first nut slider 711 and the second nut slider 721 are slided along the axis direction of the first joint shaft 61 and second joint axle 62 to the first brake pad 712 and the second brake pad 722 respectively, nut slider contacts with corresponding brake pad respectively to extrude and produces very strong stiction, corresponding joint is locked with this, the each adjacent segment of whole finger is relatively fixed, existing shape invariance can be maintained；When motor 21 rotates forward again, the first joint shaft 61 and second joint axle 62 rotate forward so that nut slider slides along axis to away from brake pad direction, and corresponding nut slider no longer contacts with brake pad, just completes the process unlocked with this.
Fig. 7 have expressed the generalized section of the concrete position of the second spring part 42, in the present embodiment, spring part is torsion spring, and spring sleeve is located on second joint axle 62, one part of radially-protruding two parts is connected with the 3rd segment 13, and another part and the second segment 12 are connected.Under original state, radially-protruding two parts are orthogonal so that finger is bending shape, two parts conllinear that torsion spring stretches out after tendon rope 1 is completely taut, and now finger is in stretching form.Shown in Fig. 7 is the finger state that the second spring part 42 presents when stretching.First spring part 41 is similar with the Equations of The Second Kind spring part situation in Fig. 7.
Fig. 8 is the relative position relation figure of each parts on second joint axle, and second joint axle 62 is set in the second segment 12, and the second nut slider 721 slides and is embedded in the second segment 12, and the second brake pad 722 is fixed in the 3rd segment 13.
Fig. 9 and Figure 10 have expressed the sectional view at finger second joint place under non-locking and locking two states respectively.There is second joint axle 62 and when the second screw rod 621 rotates when motor 21 is driven by the second drive mechanism, move along the centerline direction of second joint axle 62 with the second nut slider 721 that the second screw rod 621 forms screw-driven relation so that the second nut slider 721 mutually extrudes with the second brake pad 722 and contacts.Adopt elastomeric material due to surface both in the present embodiment, therefore both meetings produce very strong stiction so that the second segment 12 and the 3rd segment 13 are difficult to then rotate mutually, material is thus formed the effect in locking joint.
The work process of the present embodiment as shown in Figure 11 to Figure 19, have expressed the situation of the crawl difformity of the present embodiment, size and weight, is specifically described as follows:
The first situation is such as shown in Figure 11, Figure 12, Figure 13, for reduced size grasping body process.First, pull tendon rope 31 to make finger stretch, then move finger and make it near object；Loosening tendon rope 31, finger is gradually curved, and after the first segment 11 and the second segment 12 successively touch object, the first spring part is no longer replied, and the first joint shaft 61 stops operating；When the 3rd segment 13 is fully in contact with after object, whole finger apparatus just completes crawl object process adaptively.Due to the small volume of object, quality is less, so now not needing to use lock function also can implement reliable and stable crawl task.
The second situation, such as shown in Figure 14, Figure 15, Figure 16, captures process for irregular-shaped objects.The crawl process of this situation is substantially similar with the first situation, and object is also relatively light small and exquisite, it is possible to use lock function can not also use, and two kinds of selections are attained by good effect.
The third situation is such as shown in Figure 17, Figure 18, Figure 19, for the process of weight capacity larger object movement.Crawl process and first kind basic simlarity, but need in this case to use lock function.After finger envelope object, then loosen tendon rope 31；After tendon rope 31 loosens completely, motor 21 drives the first joint shaft 61 by two drive mechanisms, second joint axle 62 is rotated further, first nut slider the 711, second nut slider 721 is close until both contact squeezes to first brake pad the 712, second brake pad 722 respectively, and now two joints are locked.Joint synchronous two processes of locking are added so that finger can capture heavy objects, and the process of crawl is quick, stable by self-adapting grasping.
This device utilizes motor, tendon rope, spring part, wheel type driving mechanism and thread transmission comprehensively to realize self-adapting grasping and the function in the multiple joints of continuous synchronization locking.This device is used for capturing object, it is possible to automatically adapt to the shape of object, size, adaptable；Capture and can take locking articulated manner or not lock mode after object, especially the object of unlike material, weight is had very strong adaptive capacity；Crawl process fast and stable, locks joint, prevents finger resilience unstability on the one hand after crawl so that do not have collision object when capturing object, squeeze and run object；On the other hand, can providing bigger grasp force, locking device has self-locking effect, and the finger apparatus after locking can be similar to regards a rigid body as, its bearing capacity aspect can mate the arm apparatus being attached thereto better, implements the extraction to relatively heavy object (such as luggage case)；Can the multiple joint of genlocing；Lockable joint angles is continuous print；This apparatus structure is simple, and volume is little, lightweight, controls easily, design, manufacture, I& M cost low.
Claims (3)
1. the dynamic helical synchronous locking adaptive robot finger apparatus of axle, including motor, decelerator, the first drive mechanism, tendon rope, stay cord part, N number of segment, N-1 joint shaft, N-1 spring part and N-1 joint wheel；Described motor and first segment are affixed；The output shaft of described motor is connected with the power shaft of decelerator, and the output shaft of described decelerator and the input of the first drive mechanism are connected, and the outfan of described first drive mechanism is connected with stay cord part；Described stay cord part slides or rotates and is arranged in the first segment；One end of described tendon rope is connected with stay cord part, and the other end of tendon rope is connected with last segment；Described tendon rope walks around all joints wheel, all segments that the traverse of tendon rope is middle；Described i-th joint shaft is set in i-th segment, and described i+1 segment is socketed on i-th joint shaft, and described i-th joint wheel is socketed on i-th joint shaft, and the two ends of described i-th spring part connect i-th segment and i+1 segment respectively；All described joint shafts are parallel to each other；It is characterized in that: this device includes N-1 nut slider, N-1 screw rod, the second drive mechanism, N-2 drivewheel, N-2 driven pulley and N-2 driving member；The output shaft of described decelerator and the input of the second drive mechanism are connected, the outfan of described second drive mechanism and the first joint shaft are connected, described jth drivewheel is fixed on jth joint shaft, described jth driven pulley is fixed on+1 joint shaft of jth, and described jth driving member connects jth drivewheel and jth driven pulley；Described jth driving member adopts transmission band, transmission rope or chain；Described jth drivewheel adopts belt wheel, rope sheave or sprocket wheel, and described jth driven pulley adopts belt wheel, rope sheave or sprocket wheel, can cooperatively form drive connection between described jth driving member, jth drivewheel and jth driven pulley three；Described i-th joint shaft is affixed with i-th screw rod, and the centrage of described i-th joint shaft overlaps with the centrage of i-th screw rod；Described i-th nut slider slides and is embedded in i-th segment, the threaded i-th screw rod of i-th nut slider, and namely i-th nut slider forms screw-driven relation by intrinsic screwed hole on it with i-th screw rod；Described i-th nut slider contacts with i+1 segment or stands away；Wherein, N is the natural number more than 1, and i is 1,2 ... or N-1, j be 1,2 ... or N-2.
2. the dynamic helical synchronous of axle locks adaptive robot finger apparatus as claimed in claim 1, it is characterised in that: entirety or the local of described nut slider adopt elastomeric material.
3. the dynamic helical synchronous of axle locks adaptive robot finger apparatus as claimed in claim 1, it is characterised in that: the local surfaces of described nut slider is rough surface.
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| CN201610139962.4A CN105798937B (en) | 2016-03-11 | 2016-03-11 | Axis moves helical synchronous and locks adaptive robot finger apparatus |
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| CN201610139962.4A CN105798937B (en) | 2016-03-11 | 2016-03-11 | Axis moves helical synchronous and locks adaptive robot finger apparatus |
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| CN105798937B CN105798937B (en) | 2018-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953353A (en) * | 2017-11-22 | 2018-04-24 | 清华大学 | The instant genlocing device of under-driving robot finger multi-joint any angle |
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| CN107953353A (en) * | 2017-11-22 | 2018-04-24 | 清华大学 | The instant genlocing device of under-driving robot finger multi-joint any angle |
| CN107953353B (en) * | 2017-11-22 | 2020-05-01 | 清华大学 | Finger multi-joint any-angle instant synchronous locking device of under-actuated robot |
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| CN109630651B (en) * | 2019-01-25 | 2022-02-11 | 苏州阿清智能科技有限公司 | Harmonic speed reduction driving mechanism with self-locking function |
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