CN101640446A - Axial load resistant no-return-difference torque output ball-hinged driving mechanism - Google Patents
Axial load resistant no-return-difference torque output ball-hinged driving mechanism Download PDFInfo
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- CN101640446A CN101640446A CN200910092300A CN200910092300A CN101640446A CN 101640446 A CN101640446 A CN 101640446A CN 200910092300 A CN200910092300 A CN 200910092300A CN 200910092300 A CN200910092300 A CN 200910092300A CN 101640446 A CN101640446 A CN 101640446A
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Abstract
The invention discloses an axial load resistant no-return-difference torque output ball-hinged driving mechanism, comprising a driving unit, a transmission unit and an aligning unit; a servo direct current motor is arranged on a motor mounting seat and is connected with a motor shaft coupling block so as to form the driving unit; an output shaft, a criss-cross sliding block and the motor shaft coupling block are coupled by a longitudinal slot and a horizontal slot so as to form the transmission unit; a pressure side ring is used for fastening a ball-hinged joint outer ring in a mounting hole of the motor mounting seat and a ball-hinged joint inner ring and the ball-hinged joint outer ring are mutually matched to realize the aligning function; a bearing outer baffle ring is used for pressing two angular contact ball bearings in a bearing mounting hole of a ball-hinged joint; and the output shaft and the angular contact ball bearing are locked by fastening nuts, thus forming the aligningunit together. The axial load resistant no-return-difference torque output ball-hinged driving mechanism adopts the ball-hinged joint to realize axial load characteristic, simultaneously uses the floating criss-cross sliding block to transfer torque, overcomes return difference of the servo direct current motor when switching by forward and reverse rotation, and compensates the radial and axial errors caused by deflection of the output shaft.
Description
Technical field
The present invention relates to a kind of ball-hinged driving mechanism, more particularly say, be meant a kind of ball-hinged driving mechanism with no-return-difference torque output of axial load resistant.
Background technology
Torque output ball-hinged driving mechanism is a kind of rotary drive mechanism form of output shaft adjustable angle.During this mechanism output torque, the angle of output shaft can be adjusted, and to adapt to the variation of back level transmission mechanism attitude and position, can be applicable to fields such as robot, microoperation, Medical Devices, scientific research apparatus.
Traditional torque output ball-hinged driving mechanism mainly adopts cross universal coupling or spring coupling and output shaft to link, to realize moment of torsion output and around the function of the passive beat of the centre of sphere.This class mechanism way of realization adopts normal component, has advantage simple and compact for structure, that volume is less, but its intrinsic drawbacks limit the application of such mechanism.Its main shortcoming can be summarized as follows:
1) axial load resistant poor-performing.As adopt spring coupling as the transition connector, axial length dimension meeting change; And the employing cross universal coupling, the connecting link pin of shaft coupling bears axially and alternate load radially, easily abrasion deformation and cause drive gap bigger.
2) the rotation return difference is bigger.As adopting spring coupling as the transition connector, there are certain phase difference in output shaft and power shaft; And the employing cross universal coupling, its wearing and tearing meeting that intersects bearing pin influences rotating accuracy rapidly, has the quiescent centre when making forward and reverse switching, and ball-hinged driving mechanism is impacted.
Summary of the invention
The no-return-difference torque output ball-hinged driving mechanism that the purpose of this invention is to provide a kind of axial load resistant, this ball-hinged driving mechanism adopts the ball pivot articulation structure to realize the beat of output shaft, resist the axial load that output shaft bears simultaneously, connect with angular contact ball bearing between ball pivot joint and the output shaft, make the sphere joint only produce the beat motion and do not turn round.The motor output torque is passed to output shaft by the right-angled intersection slide block that floats, and the right-angled intersection slide block can adapt to the attitude of output shaft automatically, to compensate the radial and axial error that causes owing to the output shaft beat.
The invention discloses a kind of no-return-difference torque output ball-hinged driving mechanism of axial load resistant, it has comprised driver element, gear unit and aligning unit; Servo direct current motor is installed on the motor mount, and connects and composes driver element with the motor shaft coupling block; Output shaft, right-angled intersection slide block and motor shaft coupling block three are coupled to each other the formation gear unit by vertical draw-in groove, horizontal draw-in groove; Use blank holder that ball pivot joint outer shroud is fastened in the installing hole of motor mount, ring cooperatively interacts with ball pivot joint outer shroud and realizes the aligning function in the ball pivot joint, use the outer back-up ring of bearing that two angular contact ball bearings are pressed in the bearing mounting hole that encircles in the ball pivot joint, and by clamp nut with the locking of output shaft and angular contact ball bearing, constitute the aligning unit jointly.Adopt the ball pivot joint to realize the axial load resistant characteristic among the present invention, use the right-angled intersection slide block transfer torque that floats simultaneously, overcome the return difference of servo direct current motor when forward and backward is switched, and compensation is because the radial and axial error that the output shaft beat causes.
The advantage of the no-return-difference torque output ball-hinged driving mechanism of axial load resistant of the present invention is:
(1) flexible connection of the flexible connection of employing motor shaft coupling block 2 and right-angled intersection slide block 3, right-angled intersection slide block 3 and output shaft 5.When output shaft 5 beats, right-angled intersection slide block 3 can slide in a longitudinal direction, and output shaft 5 slides in a lateral direction, has eliminated the return difference that ball-hinged driving mechanism causes owing to servo direct current motor 1 commutation in motion process.
(2) in the Qiu Xing ball pivot joint ring 10 can be with the beat of output shaft 5 beat, the additional load of having avoided output shaft 5 beats to cause.
(3) ball pivot joint outer shroud 4 is installed in the joint outer shroud installing hole 7e of motor mount 7 by blank holder 9, and in the ball pivot joint, pass through two angular contact ball bearings of socket on the output shaft 5 in the ring 10, when reducing output shaft 5 steering resistances, axial load is passed to ball pivot joint outer shroud 4 bear, guaranteed the axial load resistant of ball-hinged driving mechanism of the present invention.
(4) this mechanism uses ball pivot joint and right-angled intersection slide block as implementation, has advantages such as good, no return difference of transmission rigidity and axial load resistant performance are good.
Description of drawings
Fig. 1 is the outline drawing of the no-return-difference torque output ball-hinged driving mechanism of axial load resistant of the present invention.
Figure 1A is the assembling diagrammatic sketch of the no-return-difference torque output ball-hinged driving mechanism of axial load resistant of the present invention.
Fig. 2 is the structure chart of motor shaft coupling block of the present invention.
Fig. 3 is the structure chart of right-angled intersection slide block of the present invention.
Fig. 4 is the structure chart of blank holder of the present invention.
Fig. 5 is the structure chart of motor mount of the present invention.
Fig. 6 is an aligning of the present invention unit fixation kit blast diagrammatic sketch.
Fig. 7 is an aligning unit activity assembly blast diagrammatic sketch of the present invention.
Among the figure: 1. servo direct current motor 1a. motor shaft 2. motor shaft coupling blocks
2a.A through hole 2b. is draw-in groove 3. right-angled intersection slide block 3a. radial rib radially
3b. axial outer shroud locating surface 4b. joint, outer shroud 4a. joint, draw-in groove 4. ball pivot joint outer shroud sphere
5. output shaft 5a. axial ribs 5b. keyway 5c. bearing baffle ring
5d. external screw thread 6. motor trip bolts 7. motor mount 7a. location holes
7b. cavity 7c.A screwed hole 7d.B screwed hole 7e. joint outer shroud installing hole
7f. boss 7g. deep gouge 7h. motor installed surface 7j. front end 7k. rear end 8. blank holder trip bolts
9. encircle in the blank holder 9a. trip 9b.B through hole 10. ball pivot joints
10a. global 10b. bearing mounting hole 10c. internal thread in the joint
11. first angular contact ball bearing, 12. second angular contact ball bearings
13. the outer back-up ring 13a. loading and unloading capacity hole of bearing 14. clamp nuts
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Please referring to shown in Fig. 1, Figure 1A, the no-return-difference torque output ball-hinged driving mechanism of a kind of axial load resistant of the present invention comprises ring 10, first angular contact ball bearing 11 in servo direct current motor 1, motor shaft coupling block 2, right-angled intersection slide block 3, ball pivot joint outer shroud 4, output shaft 5, motor trip bolt 6, motor mount 7, blank holder trip bolt 8, blank holder 9, the ball pivot joint, second angular contact ball bearing 12, the outer back-up ring 13 of bearing, output shaft clamp nut 14.
Wherein, constitute driver element by servo direct current motor 1, motor shaft coupling block 2, motor trip bolt 6 and motor mount 7.
Wherein, constitute gear unit by motor shaft coupling block 2, right-angled intersection slide block 3 and output shaft 5.
Wherein, constitute aligning unit fixation kit by motor mount 7, blank holder trip bolt 8, blank holder 9 and ball pivot joint outer shroud 4.
Wherein, ring 10, first angular contact ball bearing 11, second angular contact ball bearing 12, the outer back-up ring 13 of bearing and clamp nut 14 constitute aligning unit activity assembly in output shaft 5, the ball pivot joint.
Wherein, output shaft 5, ball pivot joint outer shroud 4, constitute the ball pivot articulation mechanism by encircling 10, first angular contact ball bearing 11, second angular contact ball bearing 12, the outer back-up ring 13 of bearing and clamp nut 14 in the ball pivot joint.
Referring to Figure 1A, shown in Figure 2, motor shaft coupling block 2 is provided with A through hole 2a and draw-in groove 2b radially, this A through hole 2a is used to realize that motor shaft coupling block 2 is connected the motor shaft 1a of servo direct current motor 1, thereby be implemented under the driving of servo direct current motor 1, motor shaft coupling block 2 rotates around the motor shaft rotation; Radially draw-in groove 2b is used to place the radial rib 3a on the right-angled intersection slide block 3, thereby realizes the flexible connection of motor shaft coupling block 2 and right-angled intersection slide block 3, and this flexible connection is meant that radial rib 3a radially can slide in the draw-in groove 2b.In the present invention, the length direction of setting servo direct current motor 1 is axial, radially draw-in groove 2b on the motor shaft coupling block 2 of then vertical and motor shaft 1a installation is the radial direction opening, so the radial rib 3a on the right-angled intersection slide block 3 is for radially can slide on (vertically) direction.This motor shaft coupling block 2 places in the cavity 7b of motor mount 7.
Referring to Figure 1A, shown in Figure 3, an end of right-angled intersection slide block 3 is provided with radial rib 3a, and the other end of right-angled intersection slide block 3 is provided with axial draw-in groove 3b; Radial rib 3a places in the radially draw-in groove 2b of motor shaft coupling block 2, and this radial rib 3a can radially slide in the draw-in groove 2b; Axially be movably installed with the axial ribs 5a of output shaft 5 one ends in the draw-in groove 3b, this axial ribs 5a can axially slide in the draw-in groove 3b.This right-angled intersection slide block 3 places in the cavity 7b of motor mount 7.In the present invention, right-angled intersection slide block 3 floats between motor shaft coupling block 2 and the output shaft 5, when output shaft 5 beats, right-angled intersection slide block 3 can radially slide on (vertically) direction, output shaft 5 is then axially sliding on (laterally) direction, eliminated the return difference that ball-hinged driving mechanism of the present invention causes owing to the commutation of servo direct current motor 1 forward and backward in motion process, and compensation is because the radial and axial error that output shaft 5 beats cause.
Referring to Figure 1A, shown in Figure 6, the outside of ball pivot joint outer shroud 4 is joint outer shroud locating surface 4a, and the inside of ball pivot joint outer shroud 4 is joint outer shroud sphere 4b (concave spherical surface); Ball pivot joint outer shroud 4 places in the joint outer shroud installing hole 7e of motor mount 7, and joint outer shroud locating surface 4a matches with the joint outer shroud installing hole 7e of motor mount 7, by blank holder 9 ball pivot joint outer shroud 4 and motor mount 7 is compressed; In joint outer shroud sphere 4b and the ball pivot joint in the joint of ring 10 global 10a (protruding sphere) match, by clamp nut 14 ring 10 and ball pivot joint outer shroud 4 in the ball pivot joint are compressed.In the present invention, ring 10 contacts with sphere and floats in ball pivot joint outer shroud 4 and the ball pivot joint, has solved the beat of output shaft 5, and opposing output shaft 5 axial load of bearing.
Referring to Figure 1A, shown in Figure 7, output shaft 5 is a multidiameter, output shaft 5 is provided with axial ribs 5a, bearing baffle ring 5c, external screw thread 5d and keyway 5b in turn from an end to the other end, axial ribs 5a is located at an end end of output shaft 5, axial ribs 5a is movably arranged in the axial draw-in groove 3b of right-angled intersection slide block 3, keyway 5b is located at the other end end of output shaft 5, place screw by in keyway 5b, placing among key and the B screwed hole 7d on the boss 7f of motor mount 7, realize mechanism of the present invention is connected with outside matrix.Be socketed with the outer back-up ring 13 of first angular contact ball bearing 11, second angular contact ball bearing 12 and bearing between bearing baffle ring 5c and the external screw thread 5d, and be connected on the external screw thread 5d with clamp nut 14, realize bearing baffle ring 5c and first angular contact ball bearing 11, second angular contact ball bearing 12 and bearing compressing between the back-up ring 13 outward; The internal thread 10c that encircles on 10 in screw thread on the outer back-up ring 13 of bearing and the ball pivot joint is connected, and has realized the installation of aligning unit activity assembly.
Referring to Figure 1A, Fig. 5, shown in Figure 6, the front end 7j of motor mount 7 is provided with four boss 7f and four deep gouge 7g, each boss 7f is provided with B screwed hole 7d, each deep gouge 7g is provided with A screwed hole 7c, this A screwed hole 7c cooperates with B through hole 9b, uses the front end 7j that blank holder trip bolt 8 realizes blank holder 9 is installed in motor mount 7; The rear end 7k of motor mount 7 is provided with location hole 7a, and the motor shaft 1a that this location hole 7a is used for servo direct current motor 1 passes through, and the casing of servo direct current motor 1 is installed on the motor installed surface 7h by screw; Have joint outer shroud installing hole 7e and cavity 7b in the motor mount 7, be placed with ball pivot joint outer shroud 4 in the outer shroud installing hole 7e of joint, place the radial rib 5a of motor shaft coupling block 2, right-angled intersection slide block 3 and output shaft 5 in the cavity 7b.In the present invention, motor mount 7 is both as the shell in ball pivot joint, simultaneously also as the matrix in ball pivot joint.
Referring to Figure 1A, Fig. 4, shown in Figure 6, blank holder 9 is provided with four trip 9a, each trip 9a is provided with B through hole 9b, four trip 9a on the blank holder 9 are fastened on respectively in four deep gouge 7g of motor mount 7, and pass B through hole 9b rear thread on the trip 9a by blank holder trip bolt 8 and be connected on the A screwed hole 7c in the deep gouge 7g.
Referring to Figure 1A, shown in Figure 7, ring 10 is the circular ring structure at spherical excision two ends in the ball pivot joint, the outside of ring 10 is global 10a (protruding sphere) in the joint in the ball pivot joint, the inside of ring 10 is bearing mounting hole 10b in the ball pivot joint, the wall of this bearing mounting hole 10b is provided with internal thread 10c, external screw thread on the outer back-up ring 13 of this internal thread 10c and bearing cooperates, realizes that the outer back-up ring 13 of bearing is installed in the ball pivot joint on the ring 10.In the present invention, global 10a cooperates with the joint outer shroud sphere 4b of ball pivot joint outer shroud 4 in the joint.Be placed with the outer back-up ring 13 of first angular contact ball bearing 11, second angular contact ball bearing 12 and bearing in the bearing mounting hole 10b.
In the present invention, being connected to of driver element (shown in Figure 1A): the casing of servo direct current motor 1 is by on the motor installed surface 7h that is installed in motor mount 7, the motor shaft 1a of servo direct current motor 1 is installed in the A through hole 2a of motor shaft coupling block 2 after passing location hole 7a on the motor mount 7; Motor trip bolt 6 carries out servo direct current motor 1 and motor mount 7 fastening.When the motor shaft 1a of servo direct current motor 1 rotation, drive motor shaft coupling block 2 and rotate around the motor shaft rotation.
In the present invention, being connected to of gear unit (as Figure 1A, shown in Figure 7): the radially draw-in groove 2b of motor shaft coupling block 2 matches with the radial rib 3a of right-angled intersection slide block 3, and the axial groove 3b of right-angled intersection slide block 3 matches with the axial ribs 5b of output shaft 5.Use " cooperation " two words explanation right-angled intersection slide block 3 and float between motor shaft coupling block 2 and the output shaft 5, the keyway 5b on the output shaft 5 can match with external corresponding mechanism, is used for the structure transfer torque of outwards meeting sb. at the airport.
In the present invention, being connected to (as shown in Figure 6) of aligning unit fixation kit: the joint outer shroud locating surface 4a of ball pivot joint outer shroud 4 matches with the joint outer shroud installing hole 7e of motor mount 7, by blank holder 9 ball pivot joint outer shroud 4 and motor mount 7 are compressed, trip 9a on the blank holder 9 matches with deep gouge 7g on the motor mount 7, carries out fastening with blank holder trip bolt 8.When linking with external mechanism, external mechanism can be installed on the boss 7f of motor mount 7, and is undertaken fastening by B screwed hole 7d.
In the present invention, being connected to (as shown in Figure 7) of aligning unit activity assembly: global 10a matches with joint outer shroud sphere 4b in the joint, when output shaft 5 beats, in the ball pivot joint ring 10 can be in the joint global 10a beat.First angular contact ball bearing 11, second angular contact ball bearing 12 use in pairs, be installed in the bearing mounting hole 10b, the outer back-up ring 13 of bearing screws with bearing fastening screw groove 10c, ring 10 in first angular contact ball bearing 11, second angular contact ball bearing 12 and the sphere joint is compressed mutually, and loading and unloading capacity hole 13a uses when being used for outer back-up ring 13 dismounting of bearing.First angular contact ball bearing 11, second angular contact ball bearing, 12 inner rings match with Bearing Installation face 5c on the output shaft 5, output shaft clamp nut 14 screws with output shaft locking screw 5d, and output shaft 5 and first angular contact ball bearing 11, second angular contact ball bearing, 12 inner rings are compressed.When output shaft 5 rotations, drive first angular contact ball bearing 11, the rotation of second angular contact ball bearing, 12 inner rings, and ring 10 does not rotate with the output shaft rotation in the ball pivot joint.
The no-return-difference torque output ball-hinged driving mechanism of axial load resistant of the present invention course of action have:
After servo direct current motor 1 started, its motor shaft 1a drove motor shaft coupling block 2 around the rotation of motor shaft rotation, drove right-angled intersection slide block 3, output shaft 5 rotations successively.When output shaft 5 bears axial load, axial load by encircle 10 in first angular contact ball bearing 11, second angular contact ball bearing 12, the ball pivot joint, ball pivot joint outer shroud 4 is passed to motor mount 7, right-angled intersection slide block 3 bears pure torsion all the time, and axially and radially have certain space of moving about, allowing that right-angled intersection slide block 3 moves about between output shaft 5 and motor shaft coupling block 2.
When output shaft 5 encircles 10 joint in the ball pivot joint in during global 10a beat, the radial rib 3a of right-angled intersection slide block 3 can swing in the radially draw-in groove 2b of motor shaft coupling block 2, axial ribs 5a can swing in the axial draw-in groove 3b of right-angled intersection slide block 3, axial and the radial error that produces during with compensation output shaft 5 beats, and do not produce additional load.
When the motor shaft 1a of servo direct current motor 1 counter-rotating, the radially draw-in groove 2b of the radial rib 3a of right-angled intersection slide block 3 and motor coupling block 2 cooperates, and the axial ribs 5a of output shaft 5 and axial cooperating of draw-in groove 3b, make the two ends of right-angled intersection slide block 3 contact and not break away from motor coupling block 2, output shaft 5 all the time, the generation factor of return difference when the forward and backward of having eliminated servo direct current motor 1 is switched has guaranteed the no return difference characteristic of mechanism of the present invention itself.
Claims (7)
1, a kind of no-return-difference torque output ball-hinged driving mechanism of axial load resistant is characterized in that: this ball-hinged driving mechanism comprises ring (10), first angular contact ball bearing (11) in servo direct current motor (1), motor shaft coupling block (2), right-angled intersection slide block (3), ball pivot joint outer shroud (4), output shaft (5), motor trip bolt (6), motor mount (7), blank holder trip bolt (8), blank holder (9), the ball pivot joint, second angular contact ball bearing (12), the outer back-up ring (13) of bearing, output shaft clamp nut (14);
Motor shaft coupling block (2) is provided with A through hole (2a) and draw-in groove (2b) radially; This A through hole (2a) is used to realize that motor shaft coupling block (2) is connected the motor shaft (1a) of servo direct current motor (1); Radially draw-in groove (2b) is used to place the radial rib (3a) on the right-angled intersection slide block (3); This motor shaft coupling block (2) places in the cavity (7b) of motor mount (7);
One end of right-angled intersection slide block (3) is provided with radial rib (3a), and the other end of right-angled intersection slide block (3) is provided with axial draw-in groove (3b); Radial rib (3a) places in the radially draw-in groove (2b) of motor shaft coupling block (2), axially is movably installed with the axial ribs (5a) of output shaft (5) one ends in the draw-in groove (3b); This right-angled intersection slide block (3) places in the cavity (7b) of motor mount (7); Right-angled intersection slide block (3) floats and is installed between motor shaft coupling block (2) and the output shaft (5);
The outside of ball pivot joint outer shroud (4) is a joint outer shroud locating surface (4a), and the inside of ball pivot joint outer shroud (4) is joint outer shroud sphere (4b); Ball pivot joint outer shroud (4) places in the joint outer shroud installing hole (7e) of motor mount (7), and joint outer shroud locating surface (4a) matches with joint outer shroud installing hole (7e) of motor mount (7), by blank holder (9) ball pivot joint outer shroud (4) and motor mount (7) is compressed; In joint outer shroud sphere (4b) and the ball pivot joint in the joint of ring (10) global (10a) match, by clamp nut (14) ring (10) and ball pivot joint outer shroud (4) in the ball pivot joint are compressed;
Output shaft (5) is a multidiameter, output shaft (5) is provided with axial ribs (5a), bearing baffle ring (5c), external screw thread (5d) and keyway (5b) in turn from an end to the other end, axial ribs (5a) is located at an end end of output shaft (5), axial ribs (5a) is movably arranged in the axial draw-in groove (3b) of right-angled intersection slide block (3), and keyway (5b) is located at the other end end of output shaft (5); Be socketed with the outer back-up ring (13) of first angular contact ball bearing (11), second angular contact ball bearing (12) and bearing between bearing baffle ring (5c) and the external screw thread (5d), and be connected on the external screw thread (5d) with clamp nut (14);
The front end (7j) of motor mount (7) is provided with four boss (7f) and four deep gouges (7g), each boss (7f) is provided with B screwed hole (7d), each deep gouge (7g) is provided with A screwed hole (7c), this A screwed hole (7c) cooperates with B through hole (9b), uses the front end (7j) that blank holder trip bolt (8) realizes blank holder (9) is installed in motor mount (7); The rear end (7k) of motor mount (7) is provided with location hole (7a), and the motor shaft (1a) that this location hole (7a) is used for servo direct current motor (1) passes through, and the casing of servo direct current motor (1) is installed on the motor installed surface (7h) by screw; Have joint outer shroud installing hole (7e) and cavity (7b) in the motor mount (7), be placed with ball pivot joint outer shroud (4) in the joint outer shroud installing hole (7e), place the radial rib (5a) of motor shaft coupling block (2), right-angled intersection slide block (3) and output shaft (5) in the cavity (7b);
Blank holder (9) is provided with four trips (9a), each trip (9a) is provided with B through hole (9b), four trips (9a) on the blank holder (9) are fastened on respectively in four deep gouges (7g) of motor mount (7), and B through hole (9b) rear thread that passes on the trip (9a) by blank holder trip bolt (8) is connected on the interior A screwed hole (7c) of deep gouge (7g);
The outside of ring (10) is global (10a) in the joint in the ball pivot joint, the inside of ring (10) is bearing mounting hole (10b) in the ball pivot joint, the wall of this bearing mounting hole (10b) is provided with internal thread (10c), external screw thread on the outer back-up ring (13) of this internal thread (10c) and bearing cooperates, realizes that the outer back-up ring (13) of bearing is installed in the ball pivot joint on the ring (10); Be placed with the outer back-up ring (13) of first angular contact ball bearing (11), second angular contact ball bearing (12) and bearing in the bearing mounting hole (10b);
After servo direct current motor (1) started, motor shaft (1a) drove motor shaft coupling block (2) around the rotation of motor shaft rotation, drove right-angled intersection slide block (3), output shaft (5) rotation successively; When output shaft (5) when bearing axial load, axial load is passed to motor mount (7) by ring (10), ball pivot joint outer shroud (4) in first angular contact ball bearing (11), second angular contact ball bearing (12), the ball pivot joint; Right-angled intersection slide block (3) bears pure torsion all the time, and axially and radially has certain space of moving about, and allows that right-angled intersection slide block (3) moves about between output shaft (5) and motor shaft coupling block (2); When output shaft (5) encircles the joint of (10) in the ball pivot joint in during global (10a) beat, the radial rib (3a) of right-angled intersection slide block (3) can be swung in the radially draw-in groove (2b) of motor shaft coupling block (2), axial ribs (5a) can be swung in the axial draw-in groove (3b) of right-angled intersection slide block (3), axial and the radial error that produces during with compensation output shaft (5) beat, and do not produce additional load.
2, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1, it is characterized in that: ring (10) contacts with sphere and floats in ball pivot joint outer shroud (4) and the ball pivot joint, solve the beat of output shaft (5), and resisted the axial load that output shaft (5) bears.
3, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1 is characterized in that: constitute driver element by servo direct current motor (1), motor shaft coupling block (2), motor trip bolt (6) and motor mount (7); When the motor shaft (1a) of servo direct current motor (1) rotates, drive motor shaft coupling block (2) and rotate around the motor shaft rotation.
4, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1 is characterized in that: constitute gear unit by motor shaft coupling block (2), right-angled intersection slide block (3) and output shaft (5); Right-angled intersection slide block (3) floats and is installed between motor shaft coupling block (2) and the output shaft (5).
5, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1 is characterized in that: constitute aligning unit fixation kit by motor mount (7), blank holder trip bolt (8), blank holder (9) and ball pivot joint outer shroud (4).
6, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1 is characterized in that: ring (10), first angular contact ball bearing (11), second angular contact ball bearing (12), the outer back-up ring (13) of bearing and clamp nut (14) constitute aligning unit activity assembly in output shaft (5), the ball pivot joint.
7, the no-return-difference torque output ball-hinged driving mechanism of axial load resistant according to claim 1 is characterized in that: output shaft (5), ball pivot joint outer shroud (4), by ring (10), first angular contact ball bearing (11), second angular contact ball bearing (12), the outer back-up ring (13) of bearing and clamp nut (14) formation ball pivot articulation mechanism in the ball pivot joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100923006A CN101640446B (en) | 2009-09-09 | 2009-09-09 | Axial load resistant no-return-difference torque output ball-hinged driving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100923006A CN101640446B (en) | 2009-09-09 | 2009-09-09 | Axial load resistant no-return-difference torque output ball-hinged driving mechanism |
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| CN101640446A true CN101640446A (en) | 2010-02-03 |
| CN101640446B CN101640446B (en) | 2011-05-04 |
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| CN2009100923006A Expired - Fee Related CN101640446B (en) | 2009-09-09 | 2009-09-09 | Axial load resistant no-return-difference torque output ball-hinged driving mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983144A (en) * | 2021-09-24 | 2022-01-28 | 北京航空航天大学 | Space shafting becomes preloading mechanism based on SMA silk and spiral friction is vice |
| CN115680902A (en) * | 2022-10-13 | 2023-02-03 | 中国航发四川燃气涡轮研究院 | Method for adjusting axial force of rotor of aircraft engine |
-
2009
- 2009-09-09 CN CN2009100923006A patent/CN101640446B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983144A (en) * | 2021-09-24 | 2022-01-28 | 北京航空航天大学 | Space shafting becomes preloading mechanism based on SMA silk and spiral friction is vice |
| CN113983144B (en) * | 2021-09-24 | 2023-08-08 | 北京航空航天大学 | Space shafting becomes preload mechanism based on SMA silk and spiral friction pair |
| CN115680902A (en) * | 2022-10-13 | 2023-02-03 | 中国航发四川燃气涡轮研究院 | Method for adjusting axial force of rotor of aircraft engine |
| CN115680902B (en) * | 2022-10-13 | 2024-05-03 | 中国航发四川燃气涡轮研究院 | Method for adjusting axial force of aero-engine rotor |
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| CN101640446B (en) | 2011-05-04 |
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