A kind of three-dimensional mechanical hand
Technical field
The present invention relates to a kind of three-dimensional mechanical hand.
Background technology
The sample arm of existing testing instruments all is a two-dimentional system, promptly can only realize spatiality is arranged to straight line, perhaps is arranged as the sample sampling of curve.For being the sample that the face type is arranged, then need rely on moving of sample to realize, be about to sample and move in line (comprising straight line, the camber line) track that sample arm works.Otherwise sample arm can't be accomplished the automatic sampling of sample, and device in the past in use; Matching requirements to auxiliary is higher, and, when operating personnel use; Need apace sample to be placed into corresponding position, therefore in due course; Operation is had relatively high expectations, and have certain danger.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of three-dimensional mechanical hand, and this three-dimensional mechanical hand can be to being the sample sampling that the face type is arranged.
The present invention solves the problems of the technologies described above through following technical scheme:
A kind of three-dimensional mechanical hand is characterized in that, comprising:
Terminal mechanical arm;
The front end robot arm, said front end robot arm and said terminal mechanical arm flexibly connect;
First driving mechanism, said first driving mechanism is connected with said terminal mechanical arm, drives said terminal mechanical arm swing;
Second driving mechanism, said second driving mechanism is connected with said front end robot arm, drives said front end robot arm swing;
Installation frame, said first driving mechanism, second driving mechanism are installed on the said installation frame;
Elevating mechanism, said elevating mechanism is connected with said installation frame, controls the up-down of said installation frame.
The present invention adjusts the operating angle of terminal mechanical arm through first driving mechanism; Adjust the operating angle of front end robot arm through second driving mechanism; Thereby realize the accurate location of the front end of front end robot arm at horizontal plane; Realize terminal mechanical arm and front end robot arm in the accurate location of vertical direction through elevating mechanism up-down installation frame, so just can realize that three-dimensional mechanical hand of the present invention is to being the sample sampling of face type layout and the sample that spues.
Said first driving mechanism comprises:
Rotating shaft I, said installation frame is provided with bearing, and said rotating shaft I is arranged in the said bearing, and the upper end of said rotating shaft I is fixedly connected with said terminal mechanical arm;
Drive unit I, said drive unit I is arranged on the said installation frame; The lower end of said rotating shaft I is connected with said drive unit I; Under the driving of said drive unit I, said rotating shaft I rotates in said bearing.
Drive unit I drives rotating shaft I and rotates, thereby realizes the swing of I around the shaft of terminal mechanical arm.Can adjust the operating angle of terminal mechanical arm like this.
Said second driving mechanism comprises:
Rotating shaft II, said rotating shaft I hollow, said rotating shaft II is arranged among the said rotating shaft I, and the upper end of said rotating shaft II is fixedly connected said front end robot arm through linkage;
Drive unit II, said drive unit II is arranged on the said installation frame; Said rotating shaft II lower end is connected with said drive unit II; Under the driving of drive unit II, said rotating shaft II rotates in said rotating shaft I.
Drive unit II drives rotating shaft II and rotates, thereby realizes that the front end robot arm is around the swing of the junction of front end robot arm and terminal mechanical arm.Can adjust the operating angle of terminal mechanical arm like this.
Said drive unit I comprises:
Drive motors I, said drive motors I is installed on the said installation frame;
Belt wheel Ia, said belt wheel Ia is arranged on the output shaft of said drive motors I;
Belt wheel Ib, said belt wheel Ib fixed cover is located at the lower end of said rotating shaft I;
Cog belt I, said cog belt I connect said belt wheel Ia and said belt wheel Ib.
Drive motors I drives belt wheel Ia and rotates, and belt wheel Ia drives belt wheel Ib through cog belt I and rotates, thereby realizes the driving of countershaft I.
Said drive unit II comprises:
Drive motors II, said drive motors II is installed on the said installation frame;
Belt wheel IIa, said belt wheel IIa is arranged on the output shaft of said drive motors II;
Belt wheel IIb, said belt wheel IIb fixed cover is located at the lower end of said rotating shaft II;
Cog belt II, said profile of tooth II band connects said belt wheel IIa and said belt wheel IIb.
Drive motors II drives belt wheel IIa and rotates, and belt wheel IIa drives belt wheel IIb through cog belt II and rotates, thereby realizes the driving of countershaft II.
Said elevating mechanism comprises:
Frame, said frame comprise base plate, top board, vertical mobile guide axle; The upper end of said vertical mobile guide axle is arranged on the said top board, and the lower end is arranged on the said base plate; Said installation frame is arranged on the said vertical mobile guide axle and can moves up and down;
Drive lead screw, said base plate is provided with lower bearing, and said top board is provided with upper bearing (metal); Said drive lead screw lower end is arranged in the said lower bearing, and the upper end is arranged in the said upper bearing (metal);
The drive lead screw driving mechanism, said drive lead screw driving mechanism is arranged on the said base plate;
Slide block, said slide block are arranged on the said drive lead screw and can move up and down; Said slide block is fixedly connected with said installation frame.
Under the driving of drive link driving mechanism, drive lead screw rotates, and slide block is moved up and down, and then installation frame moves up and down, thereby realizes moving up and down of terminal mechanical arm and front end robot arm.Can realize terminal mechanical arm and front end robot arm accurate location like this at vertical direction.
Three-dimensional mechanical hand of the present invention also comprises sensor groups, and said sensor groups is made up of two optoelectronic switches, and said two optoelectronic switches are installed in the circuit board, and said wiring board is fixed on the said installation frame.Can constantly carry out the correction at work zero point of front end robot arm and terminal mechanical arm like this, reduce accumulated error.
Three-dimensional mechanical hand of the present invention also comprises sampling probe, and said sampling probe is arranged on the front end of said front end robot arm.
Said linkage comprises:
Connecting rod;
First crank; Said first crank is through being bolted to said rotating shaft II upper end; Be provided with first crank axle at the upper surface of first crank, the position of departing from the said first crank axis of rotation, an end of said connecting rod is through said first crank axle and the flexible connection of said first crank;
Second crank; Said second crank is fixedly connected with the pin of the end of said front end robot arm; Be provided with second crank axle at the upper surface of said second crank, the position of departing from the said second crank axis of rotation, the other end of said connecting rod is through said second crank axle and the flexible connection of said second crank.
Description of drawings
Further specify the present invention below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cutaway view of the present invention.
Fig. 3 is a working region of the present invention sketch map.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with the specific embodiment, further set forth the present invention.
Referring to Fig. 1.A kind of three-dimensional mechanical hand comprises: terminal mechanical arm 1, front end robot arm 2, the first driving mechanisms 3, the second driving mechanisms 4, installation frame 5, elevating mechanism 6; Also comprise sensor groups 7, sampling probe 8.
The terminal upper surface of front end robot arm 2 has pin 21, and the front end of terminal mechanical arm 2 has installing hole, and pin 21 injects the installing hole of the front end of terminal mechanical arm 2 from terminal mechanical arm 2 belows, and front end robot arm 1 and terminal mechanical arm 2 are flexibly connected.Like this, front end robot arm 1 just can be around the swing of the junction of front end robot arm 1 and terminal mechanical arm 2.
First driving mechanism 3, second driving mechanism 4 are installed on the installation frame 5.Installation frame 5 comprises installation frame top board, installation frame base plate, installation frame left plate, installation frame right plate.
First driving mechanism 3 is fixedly connected with the end of terminal mechanical arm 1, drives terminal mechanical arm 1 in the horizontal plane swing, realizes the adjustment to the operating angle of terminal mechanical arm 1.Specifically, first driving mechanism 3 mainly is made up of rotating shaft I 31, drive unit I 32.Installation frame top board on the installation frame 5 is provided with the bearing block installing hole, is provided with bearing block in the bearing block installing hole, is provided with bearing in the bearing block, and the bottom of rotating shaft I 31 is arranged in the bearing.Rotating shaft I 31 upper ends are fixedly connected with the end of terminal mechanical arm 1; Specifically; Be that the end of terminal mechanical arm 1 is provided with the body 11 into a single integrated structure with terminal mechanical arm 1; Rotating shaft I 31 is inserted in the body 11, also is provided with cross through hole on the body 11, and pin injects in the cross through hole rotating shaft I 31 tightenings.Drive unit I 32 comprises: drive motors I 321, belt wheel I a322, belt wheel I b323, cog belt I 324.Have the hole on the installation frame top board, drive motors I 321 is installed in through bolt on the upper surface of installation frame top board, and the output shaft of drive motors I 321 puts in the installation frame 5 through the hole on the installation frame top board; Belt wheel I a322 is arranged on the output shaft of drive motors 321, and belt wheel I b323 fixed cover is located at the lower end of rotating shaft I 31, and belt wheel I a322, belt wheel I b323 are positioned under the installation frame top board; Cog belt 324 connects belt wheel I a322 and belt wheel I b323.Drive motors I 321 drives belt wheel I a322 and rotates, and belt wheel I a322 drives belt wheel I b323 through cog belt I 324 and rotates, thereby realizes the driving of drive unit I 32 countershaft I 31, and rotating shaft I 31 is rotated in bearing.Drive unit I 32 drives rotating shaft I 31 and rotates, thereby realizes the swing of I 31 around the shaft of terminal mechanical arm 1.So just realized the adjustment of the operating angle of terminal mechanical arm 1.
Second driving mechanism 4 is connected with the end of front end robot arm 2, drives the swing of front end robot arm 4 at horizontal plane, realizes the adjustment to the operating angle of front end robot arm 2.
Specifically, second driving mechanism 4 mainly is made up of rotating shaft II 41, drive unit II 42.Rotating shaft I 31 hollows, rotating shaft II 41 is arranged among the rotating shaft I 31, and driving shaft I 31 is stretched out at two.Rotating shaft II 41 upper ends connect the bearing pin of the end of front end robot arm 2 through linkage; There is the first circular crank rotating shaft II 41 upper ends through bolt specifically; Circular first crank and rotating shaft II 41 are coaxial; The upper surface of the first circular crank is provided with first crank axle at the position of departing from the center of circle, and an end of connecting rod flexibly connects through first crank axle and first crank; The second circular crank is fixedly connected with the pin 21 of the end of front end robot arm at circle centre position, and the upper surface of the second circular crank is provided with second crank axle at the position of departing from the center of circle, and the other end of connecting rod flexibly connects through second crank axle and second crank.Drive unit II 42 comprises: drive motors II 421, belt wheel II a422, belt wheel II b423, cog belt II 424.Have the hole on the installation frame base plate, drive motors II 421 is installed in the bottom surface of installation frame base plate through bolt, and the output shaft of drive motors II 421 puts in the installation frame 5 through the installing hole of installation frame base plate; Belt wheel II a422 is arranged on the output shaft of drive motors II 421; Belt wheel II b423 fixed cover is located at the lower end of rotating shaft II 41; Cog belt II 424 connects belt wheel II a422 and belt wheel II b423.Drive motors II 421 drives belt wheel II a422 and rotates, and belt wheel II a422 drives belt wheel II b423 through cog belt II 424 and rotates, thereby realizes the driving of drive unit II 42 countershaft II 41.Drive unit II 42 drives rotating shaft II 41 and rotates, thereby realizes that front end robot arm 2 is around the swing of the junction of front end robot arm 2 and terminal mechanical arm 1.
Elevating mechanism 6 is connected with installation frame 5, the up-down of control installation frame 5.Elevating mechanism 6 comprises: frame 61, drive lead screw 62, drive lead screw driving mechanism 63, slide block 64.
Frame 61 comprises base plate 611, top board 612, vertical mobile guide axle 613,614.Have two holes on the top board 612, supply rotating shaft I 31 to pass and supply drive motors I when going up and down, to pass respectively.Also be provided with the cylindrical shell that entangles rotating shaft I 31 on the top board 612.The upper end of vertical mobile guide axle 613,614 is arranged on the top board 612, and the lower end is arranged on the base plate 611.Two linear bearings are installed on the installation frame 5, and these two linear bearings are enclosed within on the vertical mobile guide axle 613,614, and 5 of installing frames just can move up and down like this.
Base plate 611 is provided with lower bearing, and top board 612 is provided with upper bearing (metal), and drive lead screw 62 lower ends are arranged in the lower bearing, and reaches under the base plate 611, and drive lead screw 62 upper ends are arranged in the said upper bearing (metal).
Drive lead screw driving mechanism 63 is arranged on the base plate 611.Specifically, drive lead screw driving mechanism 63 mainly comprises: drive motors III 631, belt wheel III a632, belt wheel III b633, cog belt III 634.Have the hole on the base plate 611, drive motors III 631 is installed on base plate 611 upper surfaces, and the output shaft extension of drive motors III 631 is crossed the hole on the base plate 611; Belt wheel III a632 is arranged on the output shaft of drive motors III 631.Belt wheel III b633 fixed cover is located at the lower end of drive lead screw 62; Cog belt 624 connects belt wheel III a632 and belt wheel III b633.Drive motors III 631 drives belt wheel III a632 and rotates, and belt wheel III a632 drives belt wheel IIIb633 through cog belt III 634 and rotates, thereby realizes the driving of 63 pairs of drive lead screws 62 of drive lead screw driving mechanism.
Slide block 64 is arranged on the drive lead screw 62 and can moves up and down; Slide block 64 and installation frame 5 are fixedly connected through screw.
Under the driving of drive link driving mechanism 63, drive lead screw 62 rotates, and slide block 64 is moved up and down, and then installation frame 5 moves up and down, thereby realizes moving up and down of terminal mechanical arm 1 and front end robot arm 2.Terminal mechanical arm 1 and the accurate location of front end robot arm 2 have so just been realized at vertical direction.Three-dimensional mechanical hand of the present invention also comprises sensor groups 7, and sensor groups 7 is made up of two optoelectronic switches, and two optoelectronic switches are installed in the circuit board, and wiring board is fixed on the installation frame 5.Can constantly carry out the correction at work zero point of front end robot arm 2 and terminal mechanical arm 1 like this, reduce accumulated error.
Three-dimensional mechanical hand of the present invention also comprises sampling probe 8, and sampling probe 8 is arranged on the front end of front end robot arm 2.
Also be provided with liquid level sensor on the mechanical arm 1 endways, be used for sampling needle perception liquid level.
When three-dimensional mechanical hand of the present invention was worked, the position according to sample carried out coordinate Calculation by controller, calculated terminal mechanical arm 1 operating angle and front end robot arm 2 operating angles of gained.Drive motors III drives drive lead screw 62 work through belt wheel III a632, cog belt III 634, belt wheel III b633 then; Slide block 64 moves upward; After moving to the extreme higher position of setting; Drive motors I drives belt wheel I a322, cog belt I 324, belt wheel I b323 rotation; Terminal mechanical arm 1 swings to the operating angle of setting, and drive motors II drives belt wheel II a422, cog belt II 424, belt wheel II b423 rotation, and rotating shaft II drives the operating angle that front end robot arm 2 swings to setting through linkage.Drive motors III drives drive lead screw 62 work through belt wheel III a632, cog belt III 634, belt wheel III b633 then, and slide block 64 moves downward, move to the sample position of setting after, draw sample.Drive motors III drives drive lead screw 6 work through belt wheel III a632, cog belt III 634, belt wheel III b633 then; Slide block 64 moves upward; Move to the extreme higher position of setting; Drive motors I drives belt wheel I a322, cog belt I 324, belt wheel I b323 rotation; Terminal mechanical arm 1 swings to another operating angle of setting, and drive motors II drives belt wheel II a422, cog belt II 424, belt wheel II b423 rotation, and rotating shaft II drives another operating angle that front end robot arm 2 swings to setting through linkage.Drive motors III drives drive lead screw 62 work through belt wheel III a632, cog belt III 634, belt wheel III b633 then, and slide block 64 moves downward, move to the operating position of setting after, sample spues.So Zhou Er renews.In motion process, through sensor groups, can constantly carry out the correction at work zero point of front end robot arm and terminal mechanical arm, reduce accumulated error.
Outstanding feature of the present invention is that the working region of three-dimensional mechanical hand of the present invention is the zone that curve wrapped up shown in Figure 3, in this zone, places sample; All can effectively be gathered by this device, sample need not in the track of specific mechanical arm, to arrange, and relies on the method that moves sample to cater to mechanical arm; Be effective collection; Adopt this device, can reduce the danger of sample operations, it is more convenient to operate.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.