CN2652021Y - Linear electric motor - Google Patents
Linear electric motor Download PDFInfo
- Publication number
- CN2652021Y CN2652021Y CN 200320100458 CN200320100458U CN2652021Y CN 2652021 Y CN2652021 Y CN 2652021Y CN 200320100458 CN200320100458 CN 200320100458 CN 200320100458 U CN200320100458 U CN 200320100458U CN 2652021 Y CN2652021 Y CN 2652021Y
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- CN
- China
- Prior art keywords
- axle sleeve
- rear end
- shaft sleeve
- ball bearing
- linear electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a linear electric motor which comprises a front and a rear end covers, a stator, a rotor, a first and second ball bearings, a shaft sleeve and a spiral guide rod, wherein the stator is arranged in a bearing housing composed of the front and the rear end covers; threads are arranged at the front side of the front end cover; the rear end of the shaft sleeve is connected to the threads of the front end cover; the spiral guide rod is plugged in the shaft sleeve. The rear end of the shaft sleeve connected in the threads of the front end cover is pressed against the outer surface of the first ball bearing, and a spring washer is arranged between the outer surface of the first ball bearing and the rear end of the shaft sleeve of which the front end is provided with an anti-rotation shaft sleeve which is in the same shaft with the shaft sleeve, and an integral shaping anti-rotation connecter is arranged at the front end of the anti-rotating shaft sleeve. A slot corresponding to the anti-rotation connecter is arranged at the front end of the shaft sleeve, and a locking connector is arranged at the front end of the anti-rotation shaft sleeve. The utility model can stop the spiral guide rod from rotating, can adjust preload, and has the characteristic of simple structure.
Description
Technical field
The utility model relates to a kind of motor, refers in particular to a kind of linear electric machine.
Background technology
Linear electric machine is a kind of device along the straight line path executable operations, and it is reasonably constructed is exactly to utilize the spiral guide rod that passes the rotary electric machine rotor to rotatablely move to be converted into rectilinear motion.In order to reach this purpose, the method that stops the spiral guide rod rotation just need be provided, this method can be fettered in the outside or the inside of actuator by the mode of catching, thereby reaches this purpose.
Linear electric machine is by being fixed to anti-rotating shaft on the spiral guide rod and should preventing that rotating shaft passed axle sleeve and make it to reach anti-rotating function.Axle sleeve is installed in the lining on motor surface, and anti-rotating shaft and axle sleeve are a kind of anti-non-rotary structures of rotating shaft that can make when carrying out linear transformation.Spline shaft for example, hexagonal axis or butterfly axle etc.In motor application, can work effectively for the ball axle that makes the rotor rotation, need between the inside and outside steel ring of bearing, apply pretightning force.Existing linear electric machine can not stop the spiral guide rod rotation, can not regulate preload, and complex structure.
The utility model content
The purpose of this utility model is: provide a kind of linear electric machine that has inner system control spiral guide rod, a kind of linear electric machine and a kind of linear electric machine simple in structure that has the ball bearing of scalable preload.
Technical solution adopted in the utility model is: a kind of linear electric machine, comprise front end housing 30, rear end cap 32, stator 44, rotor 34, and also comprise first ball bearing 38, second ball bearing 40, axle sleeve 64 and spiral guide rod 120.Rotor 34 is installed in the bearing chamber that is made of front end housing 30 and rear end cap 32, the front side of front end housing 30 is provided with screw thread, the rear end of axle sleeve 64 is connected in the screw thread of front end housing 30, front end housing 30, rear end cap 32, stator 44, rotor 34 and first ball bearing 38, second ball bearing 40 and axle sleeve 64 are respectively with axially-aligned, and spiral guide rod 120 is plugged in the axle sleeve 64.
After being connected in the screw thread of front end housing 30, the rear end of axle sleeve 64 is pressed against the outer surface of first ball bearing 38 again.
Be provided with a spring washer 80 between the rear end of the outer surface of first ball bearing 38 and axle sleeve 64.
The front end of axle sleeve 64 is equipped with the anti-rotating shaft cover 90 of a round barrel shape, and this anti-rotating shaft cover 90 is coaxial with axle sleeve 64.
The front end of anti-rotating shaft cover 90 is provided with the anti-adapter 102 of a global formation, and the front end of axle sleeve 64 is provided with and these anti-adapter 102 corresponding slots 100.
The front end of anti-rotating shaft cover 90 is provided with lock-on connection 110.
The beneficial effects of the utility model are: because spiral guide rod is plugged in the axle sleeve, after being connected in the screw thread of front end housing, the rear end of axle sleeve is pressed against the outer surface of first ball bearing again, such arrangement can make motor carry out preload adjustment after assembling, and can make preload reach requirement by the moment grade that changes axle sleeve.Owing between the rear end of the outer surface of first ball bearing and axle sleeve, be provided with a spring washer, thereby can obtain preload degree in various degree.Be provided with the anti-adapter of a global formation again owing to front end, can prevent the rotation of spiral guide rod at anti-rotating shaft cover.Also owing to the front end at axle sleeve is provided with and the corresponding slot of this anti-adapter, the front end of anti-rotating shaft cover is provided with lock-on connection, and institute is so that interconnect between them firmly.The utility model can stop the spiral guide rod rotation, can regulate preload, has characteristic of simple structure.
Description of drawings
Fig. 1 is the structural representation of the utility model linear electric machine.
Fig. 2 is the structural representation of the anti-rotating shaft cover of the utility model band.
Fig. 3 is the structural representation of the embedded anti-rotating shaft cover of the utility model band.
The generalized section that Fig. 4 puts in anti-rotating shaft for the bending of the utility model lock-on connection.
Fig. 5 is the installation diagram of linear electric machine shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is done to describe in further detail.
Fig. 1 shows the main element of linear electric machine, and its reference number is with 20 representatives.Motor 20 is a kind of rotation composite stepper motor, it comprises front end housing 30, rear end cap 32 and a rotor 34, the back be permanent magnet 36, first ball bearing 38 and second ball bearing 40, be installed in the axle 42 on, stator 44 surrounds permanent magnet 36, and said elements is all by axially-aligned.When assembling motor 20, first ball bearing 38 and second ball bearing 40 are axially located respectively, and vestibule 50 and 52 generates in front and rear cover 30 and 32.A spiral guide rod (not showing in Fig. 1) passes front end housing 30 and rear end cap 32 and axle 42, and the inner surface of axle 42 and the outer surface of spiral guide rod are by being threaded.
Front end housing 30 comprises that car crosses the hole 60 of screw thread, makes it to be complementary with the rear end of cylinder-shaped sleeve 64, and the outer surface of this rear end 62 is crossed screw thread with sample car.One nut, 66 sides put on the outer surface 62 and be pressed on the cylindrical shoulder 68 of front end housing 30 front surfaces, and this nut 66 has been protected axle sleeve 64.Dividing what form in the distal tip of axle sleeve 64 is vestibule 70, and its shoulder 72 is based on that the vestibule of placing anti-rotating shaft cover 90 (not showing) in Fig. 1 forms.Additional spring washer 80 is placed between the rear end of the outer end of first ball bearing 38 and axle sleeve 64.The element of all above motors 20 be by axis arrange so that cooperates (in Fig. 1, showing) with spiral guide rod 120.
Tighten to axle sleeve 64 on the front end housing 30 and lean against the outer end (making first ball bearing 38 and second ball bearing 40 be preloaded into the grade of requirement) of first ball bearing 38.Such arrangement can make motor 20 carry out preload adjustment after assembling, and can make preload reach requirement by the moment grade that changes axle sleeve 64.Because axle sleeve 64 is screwed in the vestibule 60 by screw thread.
Provide tolerance adjustable spring washer, during use, permission spring washer 80 has certain intensity and is the moment grade that particular motor 20 is regulated axle sleeves 64, thereby, in single motor size, can obtain different preload degree.The length of axle sleeve 64 is determined by the stroke of spiral guide rod 120, and can change easily.
Fig. 2 elaborated axle sleeve 64 front end structure and shown the structure of anti-rotating shaft cover 90 simultaneously.The inner surface of anti-rotating shaft cover 90 is provided with and the corresponding keyway of spiral guide rod 120 part profiles of tooth.The front end of axle sleeve 64 has three evenly spaced slots 100, and after anti-rotating shaft cover 90 inserted vestibule 70, this slot 100 was corresponding with the anti-adapter 102 that is located at anti-rotating shaft cover outer surface, to prevent the rotation of anti-rotating shaft cover.Simultaneously, at the front end of axle sleeve 64 three evenly spaced locked joints 110 are arranged, its function will be described below.
Fig. 3 has described the anti-rotating shaft cover 90 that inserts axle sleeve 64, and the inner surface that demonstrates anti-rotating shaft cover bottom nestles up shoulder 72.
Except with milling method with lock-on connection 110 bendings at the outer surface of anti-rotating shaft cover 90 with safety with stably clamp anti-rotating shaft cover in the tip position of axle sleeve 64, Fig. 4 is identical with Fig. 3.
Fig. 5 has described the phonograph 20 with spiral guide rod 120 assemblings.What show in the drawings simultaneously is lead-out wire 130 and the prolongation screw thread 132 that forms at spiral guide rod 120 left ends.The purposes that prolongs screw thread is that spiral guide rod 120 is connected on other element, certainly, also available other frame mode is as prolonging screw thread, perhaps is complete vacancy in some scenarios.Outside brake apparatus 140 is firmly connecting spiral guide rod 120, and is excessive by motor 20 right avertence to stop spiral guide rod.
The use of anti-adapter 102 (Fig. 2) and locked joints 110 (Fig. 4) is very economical.Anti-adapter 102 can form in the thermoplastic plastics shaping operation with anti-rotating shaft cover 90 in integration.Axle sleeve 64 is more suitable for being made by aluminium, and the parts of other motor 20 can be made by other suitable conventional material.
Be appreciated that, anti-rotating shaft cover 90 (Fig. 2) have stoped the rotation of spiral guide rod 120 (Fig. 5), the rotation of rotor 34 (owing to the thread inner surface of axle and being connected of spiral guide rod outer surface) makes spiral guide rod shift out or shift-in from the end of axle sleeve 64, and turning to of rotor 34 can be selected.
Claims (6)
1, a kind of linear electric machine, comprise front end housing (30), rear end cap (32), stator (44), rotor (34), it is characterized in that: also comprise first ball bearing (38), second ball bearing (40), axle sleeve (64) and spiral guide rod (120), described rotor (34) is installed in the bearing chamber that is made of front end housing (30) and rear end cap (32), the front side of front end housing (30) is provided with screw thread, the rear end of axle sleeve (64) is connected in the screw thread of front end housing (30), described front end housing (30), rear end cap (32), stator (44), rotor (34) and first ball bearing (38), second ball bearing (40) and axle sleeve (64) are respectively with axially-aligned, and spiral guide rod (120) is plugged in the axle sleeve (64).
2, linear electric machine according to claim 1 is characterized in that: the outer surface that is pressed against first ball bearing (38) after the rear end of described axle sleeve (64) is connected in the screw thread of front end housing (30) again.
3, linear electric machine according to claim 1 is characterized in that: be provided with a spring washer (80) between the rear end of the outer surface of first ball bearing (38) and axle sleeve (64).
4, linear electric machine according to claim 1 is characterized in that: the front end of described axle sleeve (64) is equipped with the anti-rotating shaft cover of a round barrel shape (90), and this anti-rotating shaft cover (90) is coaxial with axle sleeve (64).
5, linear electric machine according to claim 1 is characterized in that: the front end of described anti-rotating shaft cover (90) is provided with the anti-adapter (102) of a global formation, and the front end of described axle sleeve (64) is provided with and this corresponding slot of anti-adapter (102) (100).
6, linear electric machine according to claim 1 is characterized in that: the front end of described anti-rotating shaft cover 90 is provided with lock-on connection (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100458 CN2652021Y (en) | 2003-10-16 | 2003-10-16 | Linear electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100458 CN2652021Y (en) | 2003-10-16 | 2003-10-16 | Linear electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2652021Y true CN2652021Y (en) | 2004-10-27 |
Family
ID=34339265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320100458 Expired - Lifetime CN2652021Y (en) | 2003-10-16 | 2003-10-16 | Linear electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2652021Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072837A (en) * | 2020-08-23 | 2020-12-11 | 江苏美邦电机科技有限公司 | Three-phase asynchronous motor |
-
2003
- 2003-10-16 CN CN 200320100458 patent/CN2652021Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072837A (en) * | 2020-08-23 | 2020-12-11 | 江苏美邦电机科技有限公司 | Three-phase asynchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131016 Granted publication date: 20041027 |