CN202721549U - Ball screw linear driver for built-in permanent magnet synchronous motor - Google Patents
Ball screw linear driver for built-in permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN202721549U CN202721549U CN 201220416348 CN201220416348U CN202721549U CN 202721549 U CN202721549 U CN 202721549U CN 201220416348 CN201220416348 CN 201220416348 CN 201220416348 U CN201220416348 U CN 201220416348U CN 202721549 U CN202721549 U CN 202721549U
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- rotor
- armature spindle
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- synchronous motor
- fore bearing
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 35
- 230000007704 transition Effects 0.000 claims description 20
- 230000004308 accommodation Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a ball screw linear driver for a built-in permanent magnet synchronous motor. The ball screw linear driver comprises a stator (4) as well as a rotor (5) and a rotor shaft (7) which are coaxial with the stator (4), wherein the rotor shaft (7) is a hollow cylinder; the rotor (5) is fixed on the rotor shaft (7); the rotor (5) is totally packed by the stator (4); the front end of the rotor shaft (7) is connected with a lead screw nut (15); the rear end of the rotor shaft (7) is provided with a position sensor (9); a lead screw (6) is arranged in the inner cavity of the rotor shaft (7) and is matched with the lead screw nut (15); and two ends of the rotor (5) are provided with gimbal rings (11). The ball screw linear driver for the built-in permanent magnet synchronous motor has the advantages of small size, high operating precision, high reliability and simple structure.
Description
Technical field
The utility model relates to a kind of linear actuator, is specifically related to a kind of ball-screw linear actuator of built-in permagnetic synchronous motor.
Background technology
Traditional linear actuator generally adopts rotating servo motor to drive the rectilinear motion that screw pair is realized leading screw, perhaps adopts the liquid/gas pressing system to drive the liquid/gas cylinder pressure and realizes rectilinear motion.
The linear actuator that adopts rotating servo motor to drive screw pair has the advantage that the driving precision is high, controllability is good, but its complex structure, overall dimension is large, causes it difficult in maintenance, and use occasion is restricted.
Adopt the liquid/gas pressing system to drive the liquid/gas cylinder pressure and realize that straight-line linear actuator need arrange the liquid/gas pipeline, arrange hydraulic power source/source of the gas, its structure is equally very complicated, and the motion overshoot is large, precision is low, is not suitable for the occasion that kinematic accuracy is had relatively high expectations.
The utility model content
The purpose of this utility model namely is to overcome existing linear actuator complex structure, and overall dimension is large, and the deficiency that precision is low provides a kind of ball-screw linear actuator of built-in permagnetic synchronous motor.
The purpose of this utility model is achieved through the following technical solutions:
The ball-screw linear actuator of built-in permagnetic synchronous motor, it comprises stator and rotor and the armature spindle coaxial with stator, armature spindle is hollow cylinder, rotor is fixed on the armature spindle, and rotor is wrapped up fully by stator, and the front end of armature spindle is connected with feed screw nut, the rear end of armature spindle is provided with position transducer, be provided with leading screw in the inner chamber of armature spindle, leading screw cooperates with feed screw nut, and the two ends of rotor are equipped with gimbal.
Further, also be provided with fore bearing installation shaft and transition axle sleeve between the front end of described armature spindle and the described feed screw nut, fore bearing installation shaft and transition axle sleeve all are hollow-core construction, the front end of armature spindle is connected with the transition axle sleeve, the transition axle sleeve is connected with the fore bearing installation shaft, and feed screw nut is fixed on the front end of fore bearing installation shaft.
Further, described fore bearing installation shaft comprises the feed screw nut installation portion of bearing installation portion and protrusion, and feed screw nut is fixed in the feed screw nut installation portion.
Further, it also comprises front end housing, shell and rear end cap, stator is fixed on the inner surface of shell, shell holds armature spindle fully, front end housing and rear end cap are separately fixed at front end face and the rear end face of shell, offering on the front end housing can be for the hole of leading screw turnover, and position transducer is installed on the rear end cap.
Further, it also comprises fore bearing and rear bearing, be provided with the fore bearing accommodation section on the described front end housing, be provided with the rear bearing accommodation section on the described rear end cap 8, fore bearing is set on the bearing installation portion and with the fore bearing accommodation section and cooperates, and rear bearing is set in the rear end of armature spindle and cooperates with the rear bearing accommodation section.
Further, it also comprises adjusting nut, be provided with internal thread on the adjusting nut, be provided with external screw thread on the described transition axle sleeve, adjusting nut is threaded connection at transition axis and puts, the front end of adjusting nut contacts with fore bearing, can regulate the axial pre tightening force of fore bearing by adjusting nut.
Further, described leading screw is ball-screw.
Further, described rotor comprises magnet steel, rotor retaining ring and rotor punching, and by the fixing rotor core that forms of rivet, magnet steel was circumferentially in the outer surface of rotor core after rotor punching laminated, the rotor retaining ring is installed in the rotor core two ends, is used for the fixedly position of magnet steel.
Advantage of the present utility model and beneficial effect are:
1. in housing, be built-in with synchronous machine, armature spindle is hollow shaft structure, leading screw places the inner chamber of armature spindle, armature spindle rotates with rotor, armature spindle and then the rotation of drive feed screw nut, and leading screw does not rotate at circumferencial direction, thereby can be so that the leading screw moving linearly, the utility model has effectively utilized the hollow structure of rotor, and rotating parts and parts moving linearly are integrated into one, and has greatly reduced the volume of linear actuator;
2. the utility model is simple in structure, has realized the function of linear actuator by less parts, assembling and easy to maintenance;
3. the utility model transmits rectilinear motion by screw pair, and compared to liquid/gas pressing system type of drive, its kinematic accuracy is higher, and controllability is better;
4. be provided with position transducer, the position of position transducer Real-time Collection armature spindle, and position signalling passed to the external control device, computing by control device, draw position and the amount of axial movement of leading screw, be convenient to the rectilinear motion of leading screw is carried out Real Time Monitoring, improve the kinematic accuracy of leading screw;
5. two ends of rotor is provided with gimbal, has improved the stability of rotor;
6. be provided with adjusting nut, make the pretightning force of fore bearing adjustable, convenient debugging and maintenance.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of rotor;
Fig. 3 is the structural representation of front end housing;
Fig. 4 is the structural representation of fore bearing installation shaft;
Fig. 5 is the structural representation of rear end cap;
Wherein, the parts name that Reference numeral is corresponding is called:
The 1-front end housing, 2-shell, 3-fore bearing installation shaft, 4-stator, the 5-rotor, 6-leading screw, 7-armature spindle, 8-rear end cap, the 9-position transducer, 10-rear bearing, 11-gimbal, 12-transition axle sleeve, the 13-adjusting nut, 14-fore bearing, 15-feed screw nut, 16-rivet, the 17-magnet steel, 18-rotor retaining ring, 19-rotor punching, 101-fore bearing accommodation section, 301-bearing installation portion, 302-feed screw nut installation portion, 801-rear bearing accommodation section.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and protection range of the present utility model is not limited to the following stated.
Embodiment:
As shown in Figure 1, the ball-screw linear actuator of built-in permagnetic synchronous motor, it comprises stator 4 and rotor 5 and the armature spindle 7 coaxial with stator 4, armature spindle 7 is hollow cylinder, rotor 5 is fixed on the armature spindle 7, and rotor 5 is wrapped up fully by stator 4, and the front end of armature spindle 7 is connected with feed screw nut 15, be provided with leading screw 6 in the inner chamber of armature spindle 7, leading screw 6 cooperates with feed screw nut 15.Also be provided with fore bearing installation shaft 3 and transition axle sleeve 12 between the front end of described armature spindle 7 and the described feed screw nut 15, by transition axle sleeve 12 with armature spindle 7 are connected with the fore bearing installation shaft connect as a whole, fore bearing installation shaft 3 and transition axle sleeve 12 all are hollow-core construction, the front end of armature spindle 7 is connected with transition axle sleeve 12, transition axle sleeve 12 is connected with fore bearing installation shaft 3, and feed screw nut 15 is fixed on the front end of fore bearing installation shaft 3.Fore bearing installation shaft 3 provides support for fore bearing 14.The winding leading-out wire of stator 4 is connected with inverter or the frequency converter of outside, inverter or frequency converter are stator 4 power supplies, principle according to synchronous machine, rotor 5 rotations, simultaneously rotor driven axle 7, transition axle sleeve 12, fore bearing installation shaft 3 and feed screw nut 15 rotations, leading screw 6 is connected with load and does not rotate, and feed screw nut 15 drives leading screw 6 moving linearlies.The two ends of rotor 5 are equipped with gimbal 11, are used for realizing the dynamic balancing of rotor 5 rotary courses.The rear end of armature spindle 7 is provided with position transducer 9, position transducer 9 is connected with the external control device, the position of position transducer 9 Real-time Collection armature spindles 7, and position signalling passed to control device, computing by control device, draw position and the amount of axial movement of leading screw 6, be convenient to the rectilinear motion of leading screw 6 is carried out Real Time Monitoring, improve the kinematic accuracy of leading screw.
As shown in Figure 4, described fore bearing installation shaft 3 comprises bearing installation portion 301 and the feed screw nut installation portion 302 that protrudes, and bearing installation portion 301 is used for supporting fore bearing 14, and feed screw nut 15 is fixed in the feed screw nut installation portion 302.
As shown in Figure 1; it also comprises front end housing 1, shell 2 and rear end cap 8; stator 4 is fixed on the inner surface of shell 2; shell 2 holds armature spindle 7 fully; for the protection of whole device; front end housing 1 and rear end cap 8 are separately fixed at the front-end and back-end of shell 2, and offering on the front end housing 1 can be for the hole of leading screw 6 turnover, and position transducer 9 is installed on the rear end cap 8.
Such as Fig. 3 and shown in Figure 5, it also comprises fore bearing 14 and rear bearing 10, be provided with fore bearing accommodation section 101 on the described front end housing 1, be provided with rear bearing accommodation section 801 on the described rear end cap 8, fore bearing 14 is set on the bearing installation portion 301 and with fore bearing accommodation section 101 and cooperates, and rear bearing 10 is set in the rear end of armature spindle 7 and cooperates with rear bearing accommodation section 801.
As shown in Figure 1, it also comprises adjusting nut 13, is provided with internal thread on the adjusting nut 13, is provided with external screw thread on the described transition axle sleeve 12, and adjusting nut 13 is threaded connection on transition axle sleeve 12, and the front end of adjusting nut 13 contacts with fore bearing 14.Position by adjusting nut 13 is the pretightning force of capable of regulating fore bearing 14, convenient debugging and maintenance.
As shown in Figure 2, described rotor 5 comprises magnet steel 17, rotor retaining ring 18 and rotor punching 19, after laminating, rotor punching 19 fixes the formation rotor cores by rivet 16, magnet steel 17 is circumferentially in the outer surface of rotor core, rotor retaining ring 18 is installed in the rotor core two ends, is used for the fixedly position of magnet steel 17.
Leading screw 6 is ball-screw.
As mentioned above, just can realize preferably the utility model.
Claims (8)
1. the ball-screw linear actuator of built-in permagnetic synchronous motor, it is characterized in that: it comprises stator (4) and rotor (5) and the armature spindle (7) coaxial with stator (4), armature spindle (7) is hollow cylinder, rotor (5) is fixed on the armature spindle (7), rotor (5) is wrapped up fully by stator (4), the front end of armature spindle (7) is connected with feed screw nut (15), the rear end of armature spindle (7) is provided with position transducer (9), be provided with leading screw (6) in the inner chamber of armature spindle (7), leading screw (6) cooperates with feed screw nut (15), and the two ends of rotor (5) are equipped with gimbal (11).
2. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 1, it is characterized in that: also be provided with fore bearing installation shaft (3) and transition axle sleeve (12) between the front end of described armature spindle (7) and the described feed screw nut (15), fore bearing installation shaft (3) and transition axle sleeve (12) all are hollow-core construction, the front end of armature spindle (7) is connected with transition axle sleeve (12), transition axle sleeve (12) is connected with fore bearing installation shaft (3), and feed screw nut (15) is fixed on the front end of fore bearing installation shaft (3).
3. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 2, it is characterized in that: described fore bearing installation shaft (3) comprises bearing installation portion (301) and the feed screw nut installation portion (302) that protrudes, and feed screw nut (15) is fixed in the feed screw nut installation portion (302).
4. the ball-screw linear actuator of each described built-in permagnetic synchronous motor according to claim 1 ~ 3, it is characterized in that: it also comprises front end housing (1), shell (2) and rear end cap (8), stator (4) is fixed on the inner surface of shell (2), shell (2) holds armature spindle (7) fully, front end housing (1) and rear end cap (8) are separately fixed at front end face and the rear end face of shell (2), offer the hole that can supply leading screw (6) turnover on the front end housing (1), position transducer (9) is installed on the rear end cap (8).
5. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 4, it is characterized in that: it also comprises fore bearing (14) and rear bearing (10), be provided with fore bearing accommodation section (101) on the described front end housing (1), be provided with rear bearing accommodation section (801) on the described rear end cap (8), fore bearing (14) is set in bearing installation portion (301) and upward and with fore bearing accommodation section (101) cooperates, and rear bearing (10) is set in the rear end of armature spindle (7) and cooperates with rear bearing accommodation section (801).
6. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 5, it is characterized in that: it also comprises adjusting nut (13), adjusting nut is provided with internal thread on (13), be provided with external screw thread on the described transition axle sleeve (12), adjusting nut (13) is threaded connection on transition axle sleeve (12), and the front end of adjusting nut (13) contacts with fore bearing (14).
7. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 1, it is characterized in that: described leading screw (6) is ball-screw.
8. the ball-screw linear actuator of built-in permagnetic synchronous motor according to claim 1, it is characterized in that: described rotor (5) comprises magnet steel (17), rotor retaining ring (18) and rotor punching (19), after laminating, rotor punching (19) fixes the formation rotor core by rivet (16), magnet steel (17) is circumferentially in the outer surface of rotor core, and rotor retaining ring (18) is installed in the rotor core two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416348 CN202721549U (en) | 2012-08-22 | 2012-08-22 | Ball screw linear driver for built-in permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416348 CN202721549U (en) | 2012-08-22 | 2012-08-22 | Ball screw linear driver for built-in permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721549U true CN202721549U (en) | 2013-02-06 |
Family
ID=47623353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220416348 Expired - Fee Related CN202721549U (en) | 2012-08-22 | 2012-08-22 | Ball screw linear driver for built-in permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721549U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849949A (en) * | 2013-12-17 | 2014-06-11 | 荆门市福力特机电设备有限公司 | Power output device for wire-throwing machine |
| CN110289726A (en) * | 2019-07-04 | 2019-09-27 | 大连理工大学 | Electromechanical inertial container based on repeated single-phase permanent magnet synchronous motor and control method |
| WO2025261404A1 (en) * | 2024-06-20 | 2025-12-26 | 上海开普勒机器人有限公司 | Permanent magnet synchronous linear motor |
-
2012
- 2012-08-22 CN CN 201220416348 patent/CN202721549U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849949A (en) * | 2013-12-17 | 2014-06-11 | 荆门市福力特机电设备有限公司 | Power output device for wire-throwing machine |
| CN110289726A (en) * | 2019-07-04 | 2019-09-27 | 大连理工大学 | Electromechanical inertial container based on repeated single-phase permanent magnet synchronous motor and control method |
| WO2025261404A1 (en) * | 2024-06-20 | 2025-12-26 | 上海开普勒机器人有限公司 | Permanent magnet synchronous linear motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20210822 |