CN103795222A - Stepping linear motor with fixation shaft being utilized - Google Patents
Stepping linear motor with fixation shaft being utilized Download PDFInfo
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- CN103795222A CN103795222A CN201210429413.2A CN201210429413A CN103795222A CN 103795222 A CN103795222 A CN 103795222A CN 201210429413 A CN201210429413 A CN 201210429413A CN 103795222 A CN103795222 A CN 103795222A
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- sliding sleeve
- motor
- shaft
- end housing
- motor shaft
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Abstract
A stepping linear motor with a fixation shaft being utilized comprises a stator, a rotor, a motor shaft, a front end cover and a back end cover, wherein the motor shaft is the fixation shaft. One end of the fixation shaft is fixedly connected with the rotor, and the other end extends out to the front end cover and is provided with an external thread. The stepping linear motor also comprises a sliding sleeve, wherein the sliding sleeve is provided with an internal thread section, and is embedded between the front end cover and the external thread section of the motor shaft; the inner side of the sliding sleeve is in transmission connection with the external thread section of the motor shaft through the internal thread section of the sliding sleeve; and the outer side of the sliding sleeve is in sliding connection with the front end cover. According to the stepping linear motor, since the motor shaft utilizes the fixation shaft but not a through shaft, the concentricity and the like between the fixation shaft and the rotor can be more precise; an anti-rotation structure is made to from an integrated structure, so that the strength of the structure is good; the rectilinear motion mechanism is formed by the sliding sleeve closely fit with the motor, so that the transmission precision and efficiency are relatively high; and the stepping linear motor has wide applicability on occasions where space is limited and motor positioning needs to be accurately controlled.
Description
Technical field
The present invention relates to motor, relate in particular to a kind of step-by-step linear electric motor that adopts fixed axis.
Background technology
Step step-by-step linear electric motor is to be converted to straight-line motor by rotatablely moving by screw rod.General step-by-step linear electric motor is by the internal rotor rotatablely moving is made and is with female structure, and then is inserted in screw rod, drives screw rod to seesaw to realize in the time that motor rotates.If but neither one prevents the mechanism that screw rod rotates, screw rod will be followed rotor and be rotated together, does not reach straight-line effect.Prevent that screw rod from rotating, conventionally have two kinds of ways: the first is used the parts such as nut that screw rod is fixed at outside motor, also having a kind of way is that screw rod rotation-preventing mechanism is directly set on motor body.The second way, owing to directly just having realized the rectilinear motion of screw rod without external fixed mechanism at motor body, has good stability, and relevance grade is high, the advantage that controllability and operability are higher.
In order to realize the anti-rotation of screw rod on motor body, the way of prior art is separately to do one section to have the radially axle of spline shape, is called anti-rotating shaft, for example, with boss, flat filament or polygonal axle.Fig. 1 is the anti-rotating shaft 1 with boss 11.Or add again the parts such as pin at spindle nose and carry out anti-rotation, then the screw rod processing 2 and anti-rotating shaft 1 are welded or glued joint (as shown in Figure 2,, in Fig. 2,21 indications are weld).For example, on motor body (front end housing 3), make the part 31 (referring to Fig. 3) coordinating with anti-rotating shaft 1 in addition, make anti-rotating shaft be stuck in the part coordinating with anti-rotating shaft on end cap, thereby reach that screw rod can only carry out rectilinear motion and effect that can not radial rotary.As shown in Figure 4, shown in figure, 1 is anti-rotating shaft to the basic structure of prior art step-by-step linear electric motor, and 2 is screw rod, and 3 is front end housing, and 4 is bearing, and 5 is rotor, and 6 is stator, and 7 is rear end cap.
Above-mentioned prior art exists and problem is:
1, because motor shaft is through thread spindle, if the bad meeting of machining accuracy degree causes larger use deviation between screw rod and nut.
2, because this structure will be made nut in the middle of rotor, and the space of rotor centre is very limited, therefore the size of thread spindle and nut will be subject to great restriction, thereby brings difficulty to processing and manufacturing, and it is more remarkable that this embodies in the motor of little seat No..
Summary of the invention
Object of the present invention, the problem existing in order to solve above-mentioned prior art exactly, provides a kind of step-by-step linear electric motor that adopts fixed axis.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of step-by-step linear electric motor that adopts fixed axis, comprise stator, rotor, motor shaft, front end housing and rear end cap, described motor shaft is fixed axis, one end and the rotor of this fixed axis are fixedly linked, and the other end forward end cap stretches out and is provided with external screw thread; Also comprise sliding sleeve, this sliding sleeve is provided with internal thread segment, and sliding sleeve is inlaid between front end housing and the external thread section of motor shaft, and sliding sleeve inner side is connected with the external thread section transmission of motor shaft by its internal thread segment, slides and be connected with front end housing in sliding sleeve outside.
Above-mentioned step-by-step linear electric motor, wherein, described sliding sleeve is provided with the long slot bore radially connecting, and a pin is connected with front end housing through this long slot bore, and sliding sleeve can slide along pin by its long slot bore, and realizes the slip along front end housing.
Above-mentioned step-by-step linear electric motor, wherein, described front end housing is provided with guide ledges or groove, corresponding sliding recess or the boss of being provided with on described sliding sleeve, sliding sleeve is by its sliding recess or boss with guide ledges on front end housing or groove is nested is connected, and realization is along the slip of front end housing.
Step-by-step linear electric motor of the present invention, owing to having adopted above technical scheme, has following advantage and disadvantage;
1, motor shaft adopts fixed axis but not the mode of through shaft, and it is more accurate that the concentricity between motor shaft and rotor etc. can be done.
2, anti-rotation structure adopts integral structure to make, and intensity is better.
3, in micro-machine, realization is more easy, has improved technique and manufacturability.
4, straight-line motion mechanism is by making with the close-fitting sliding sleeve of motor, and precision and the efficiency of transmission are higher.
5, be restricted in space and need the occasion of accurately controlling motor location to there is applicability widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the anti-rotating shaft of prior art;
Fig. 2 is the structural representation that the anti-rotating shaft of prior art combines with screw rod;
Fig. 3 is the structural representation of front end housing of the prior art;
Fig. 4 is the basic structure schematic diagram of prior art step-by-step linear electric motor;
Fig. 5 is the structural representation of the fixed axis in the present invention;
Fig. 6 is the structural representation of the sliding sleeve in the present invention;
Fig. 7 is the structural representation of the front end housing in the present invention;
Fig. 8 is the basic structure schematic diagram of step-by-step linear electric motor of the present invention.
Embodiment
Referring to Fig. 5, Fig. 6, Fig. 7, Fig. 8, the present invention adopts the step-by-step linear electric motor of fixed axis, comprise stator 6, rotor 5, front end housing 3, rear end cap 7, bearing 4 and motor shaft 10, motor shaft 10 is wherein fixed axis, one end 101 of this fixed axis is fixedly linked with rotor 5, and the other end 102 forward end cap 3 stretches out and is provided with external screw thread; Also comprise sliding sleeve 8, this sliding sleeve 8 is provided with internal thread segment 81, and sliding sleeve 8 is inlaid between front end housing 3 and the external thread section of motor shaft 10, and sliding sleeve 8 inner sides are connected with the external thread section transmission of motor shaft 10 by its internal thread segment, slides and be connected with front end housing 3 in sliding sleeve 8 outsides.
On sliding sleeve 8 in the present invention, can be provided with the long slot bore 82 (as shown in Figure 6) radially connecting, a pin 9 is connected with front end housing 3 through this long slot bore, and sliding sleeve 8 can slide along pin 9 by its long slot bore 82, and realizes the slip along front end housing 3.
On front end housing in the present invention, also can be provided with guide ledges or groove (out not shown), corresponding sliding recess or the boss of being provided with on sliding sleeve, sliding sleeve is by its sliding recess or boss with guide ledges on front end housing or groove is nested is connected, and realization is along the slip of front end housing.
Sliding sleeve 8 in the present embodiment carries out threaded engagement by inner screw thread and motor shaft 10, outside and front end housing 3 is slidably matched, pin 9 is vertically through front end housing 3 and sliding sleeve 8, play anti-anti-skid sheath rotation and eliminated the effect in gap, in the time that the rotor 5 of motor is rotated, sliding sleeve 8 will carry out rectilinear motion and be with dynamic load in front end housing 3, thereby has formed the linear stepping motor of integration-in-one with rotation-preventing mechanism.
Claims (3)
1. one kind adopts the step-by-step linear electric motor of fixed axis, comprise stator, rotor, motor shaft, front end housing and rear end cap, it is characterized in that: described motor shaft is fixed axis, one end and the rotor of this fixed axis are fixedly linked, and the other end forward end cap stretches out and is provided with external screw thread; Also comprise sliding sleeve, this sliding sleeve is provided with internal thread segment, and sliding sleeve is inlaid between front end housing and the external thread section of motor shaft, and sliding sleeve inner side is connected with the external thread section transmission of motor shaft by its internal thread segment, slides and be connected with front end housing in sliding sleeve outside.
2. step-by-step linear electric motor according to claim 1, is characterized in that: described sliding sleeve is provided with the long slot bore radially connecting, and a pin is connected with front end housing through this long slot bore, and sliding sleeve can slide along pin by its long slot bore, and realizes the slip along front end housing.
3. step-by-step linear electric motor according to claim 1, it is characterized in that: described front end housing is provided with guide ledges or groove, corresponding sliding recess or the boss of being provided with on described sliding sleeve, sliding sleeve is by its sliding recess or boss with guide ledges on front end housing or groove is nested is connected, and realization is along the slip of front end housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429413.2A CN103795222A (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor with fixation shaft being utilized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429413.2A CN103795222A (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor with fixation shaft being utilized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103795222A true CN103795222A (en) | 2014-05-14 |
Family
ID=50670633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210429413.2A Pending CN103795222A (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor with fixation shaft being utilized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103795222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978012A (en) * | 2020-01-03 | 2020-04-10 | 常州鑫鼎机电设备有限公司 | Double-shaft servo robot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007221997A (en) * | 2007-04-18 | 2007-08-30 | Minebea Co Ltd | Stepping motor |
| CN101626190A (en) * | 2008-07-08 | 2010-01-13 | 深圳市大族精密机电有限公司 | Anti-rotation device of cylindrical linear motor and method thereof |
| CN202004585U (en) * | 2010-12-23 | 2011-10-05 | 常州市鼎智机电有限公司 | Integrated guide rail sealing linear stepping performer |
| CN203071788U (en) * | 2012-10-31 | 2013-07-17 | 上海鸣志电器股份有限公司 | Stepping linear motor by using fixed shaft |
-
2012
- 2012-10-31 CN CN201210429413.2A patent/CN103795222A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007221997A (en) * | 2007-04-18 | 2007-08-30 | Minebea Co Ltd | Stepping motor |
| CN101626190A (en) * | 2008-07-08 | 2010-01-13 | 深圳市大族精密机电有限公司 | Anti-rotation device of cylindrical linear motor and method thereof |
| CN202004585U (en) * | 2010-12-23 | 2011-10-05 | 常州市鼎智机电有限公司 | Integrated guide rail sealing linear stepping performer |
| CN203071788U (en) * | 2012-10-31 | 2013-07-17 | 上海鸣志电器股份有限公司 | Stepping linear motor by using fixed shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978012A (en) * | 2020-01-03 | 2020-04-10 | 常州鑫鼎机电设备有限公司 | Double-shaft servo robot |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140514 |
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| RJ01 | Rejection of invention patent application after publication |