CN202997903U - Stepping linear motor equipped with rotation-proof screw rod - Google Patents
Stepping linear motor equipped with rotation-proof screw rod Download PDFInfo
- Publication number
- CN202997903U CN202997903U CN2012205696542U CN201220569654U CN202997903U CN 202997903 U CN202997903 U CN 202997903U CN 2012205696542 U CN2012205696542 U CN 2012205696542U CN 201220569654 U CN201220569654 U CN 201220569654U CN 202997903 U CN202997903 U CN 202997903U
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- screw rod
- rotation
- proof
- linear motor
- end cover
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A stepping linear motor equipped with a rotation-proof screw rod is disclosed. The stepping linear motor equipped with a rotation-proof screw rod comprises a stator, a rotor, a front end cover, a rear end cover, and a screw rod, wherein the screw rod is a rotation-proof screw rod which comprises a screw rod body, an end of the screw rod body is coated with a layer of a plastic rotation-proof structure formed through injection molding, the front end cover is provided with a segment of inner cavity which matches with the rotation-proof structure in shape, and the rotation-proof structure of the screw rod is connected with the inner cavity of the front end cover in a nested manner. The stepping linear motor equipped with a rotation-proof screw rod is advantaged by unlimited machining length of the screw rod, favorable strength of the screw rod, well maintained precision such as concentricity and the like, small errors in utilization processes, small number of screw rod machining processes, saved working hours, small amount of metal section bar consumption, saved energy, self-lubricating effects of the injection molding structure, high efficiency and long service which are realized when stepping linear motor cooperates with an electromotor in linear movement processes, and the like.
Description
Technical field
The utility model relates to motor, relates in particular to a kind of step-by-step linear electric motor with the anti-rotation screw rod.
Background technology
Advance linear electric motors is to be converted to straight-line motor with rotatablely moving by screw rod step by step.General step-by-step linear electric motor is by the internal rotor that rotatablely moves being made the structure with internal thread, and then is inserted in screw rod, to realize that the drive screw rod seesaws when 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, two kinds of ways are arranged usually: the first is fixed screw rod at parts such as outside motor use nuts, and also having a kind of way is that the screw rod rotation-preventing mechanism directly is set on motor body.The second way has good stability owing to directly need not at motor body the rectilinear motion that external fixed mechanism has just been realized screw rod, 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.Perhaps add again the parts such as pin at spindle nose and carry out anti-rotation, then with the screw rod 2 that processes with anti-rotating shaft 1 welding or glued joint (as shown in Figure 2, in Fig. 2,21 indications are weld).Make in addition the part 31 (referring to Fig. 3) that coordinates with anti-rotating shaft 1 on motor body (for example front end housing 3), make anti-rotating shaft be stuck in the part that coordinates 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.The basic structure of prior art step-by-step linear electric motor as shown in Figure 4, shown in figure, 1 is anti-rotating shaft, 2 is screw rod, 3 is front end housing, 4 is bearing, 5 is rotor, 6 is stator, 7 is rear end cap.
Above-mentioned prior art exists and problem is:
1. due to screw rod and anti-rotating shaft separate machined, can only process a bit of screw rod during batch production, production efficiency is low.
2. because screw rod connects with being connected rotating shaft by welding or glueing joint, therefore intensity is relatively poor.
3. be separate machined due to screw rod and anti-rotating shaft, so it is relatively poor to engage concentricity and other precision of rear axle, can produce larger error during use.
4. also need one section anti-rotating shaft of multi-processing after processing screw rod, and anti-rotating shaft must carry out the cut of anti-rotation shape, consume too much metal material and energy consumption, and have more the operation that weldering (glue) together connects.
5. rub when metal is prevented rotating shaft and motor relative motion more serious, efficient and working life are not high.
The utility model content
The purpose of this utility model, the problem that exists in order to solve above-mentioned prior art exactly provides a kind of step-by-step linear electric motor with the anti-rotation screw rod.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of step-by-step linear electric motor with the anti-rotation screw rod, comprise stator, rotor, front end housing, rear end cap and screw rod, described screw rod is the anti-rotation screw rod, this anti-rotation screw rod comprises the screw rod body, is coated with the plastics anti-rotation structure of one deck injection mo(u)lding at an end of screw rod body; Screw rod is connected with the nested slip of described front end housing by this anti-rotation structure.
Described plastics anti-rotation structure be shaped as polygon, boss shape or flat filament shape.
Described plastics anti-rotation structure be shaped as hexagon.
The utility model step-by-step linear electric motor has following advantage and disadvantage owing to having adopted above technical scheme:
1. the processing length of screw rod is unrestricted, can adopt flat mode of rolling to produce in batches, has greatly improved production efficiency.
2. screw rod and anti-rotation structure adopt integral structure, and intensity is better.
3. injection structure one-shot forming, with the screw rod one integrated mass, the precision such as concentricity keep better, use time error less.
4. manufacturing procedure is few, saves man-hour; Shape consumes less, energy savings.
5. injection structure is with self-lubricating function, and when coordinating rectilinear motion with motor, efficient and life-span are all higher.
Description of drawings
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 anti-rotation screw rod in the utility model;
Fig. 6 is the basic structure schematic diagram of the utility model step-by-step linear electric motor;
Embodiment
Referring to Fig. 5, Fig. 6, the step-by-step linear electric motor of the utility model band anti-rotation screw rod comprises stator 6, rotor 5, front end housing 3, rear end cap 7, screw rod 2 and bearing 4.Screw rod 2 wherein is the anti-rotation screw rod, and this anti-rotation screw rod comprises the screw rod body, is coated with the plastics anti-rotation structure 8 of one deck injection mo(u)lding at an end of screw rod body; Screw rod is connected with the nested slip of front end housing by this anti-rotation structure, and screw rod can move axially and can not make radial rotating along front end housing.
The shape of the plastics anti-rotation structure in the utility model can be polygon, boss shape or flat filament shape.A preferred embodiment of the shape of the plastics anti-rotation structure in the utility model is hexagon.
Claims (3)
1. step-by-step linear electric motor with the anti-rotation screw rod, comprise stator, rotor, front end housing, rear end cap and screw rod, it is characterized in that: described screw rod is the anti-rotation screw rod, and this anti-rotation screw rod comprises the screw rod body, is coated with the plastics anti-rotation structure of one deck injection mo(u)lding at an end of screw rod body; Screw rod is connected with the nested slip of described front end housing by this anti-rotation structure.
2. step-by-step linear electric motor according to claim 1 is characterized in that: described plastics anti-rotation structure be shaped as polygon, boss shape or flat filament shape.
3. step-by-step linear electric motor according to claim 1 is characterized in that: described plastics anti-rotation structure be shaped as hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205696542U CN202997903U (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor equipped with rotation-proof screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205696542U CN202997903U (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor equipped with rotation-proof screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202997903U true CN202997903U (en) | 2013-06-12 |
Family
ID=48569029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205696542U Expired - Lifetime CN202997903U (en) | 2012-10-31 | 2012-10-31 | Stepping linear motor equipped with rotation-proof screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202997903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067404A1 (en) * | 2012-10-31 | 2014-05-08 | 上海鸣志电器股份有限公司 | Liner stepper motor having anti-rotation screw |
| CN108973016A (en) * | 2018-09-14 | 2018-12-11 | 上海理工大学 | The high-accuracy vertical injection molding machine of linear motor driving |
-
2012
- 2012-10-31 CN CN2012205696542U patent/CN202997903U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067404A1 (en) * | 2012-10-31 | 2014-05-08 | 上海鸣志电器股份有限公司 | Liner stepper motor having anti-rotation screw |
| CN103795221A (en) * | 2012-10-31 | 2014-05-14 | 上海鸣志电器股份有限公司 | Stepping linear motor equipped with rotation-proof screw rod |
| CN108973016A (en) * | 2018-09-14 | 2018-12-11 | 上海理工大学 | The high-accuracy vertical injection molding machine of linear motor driving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |