CN220934966U - Linear motor's straight connection structure - Google Patents
Linear motor's straight connection structure Download PDFInfo
- Publication number
- CN220934966U CN220934966U CN202322597644.0U CN202322597644U CN220934966U CN 220934966 U CN220934966 U CN 220934966U CN 202322597644 U CN202322597644 U CN 202322597644U CN 220934966 U CN220934966 U CN 220934966U
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- China
- Prior art keywords
- screw
- output shaft
- planet carrier
- carrier output
- linear motor
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- 239000003292 glue Substances 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a direct connection structure of a linear motor, which comprises a screw rod, a bearing assembly, a front end cover and a planet carrier output shaft; the lead screw is directly connected with the planet carrier output shaft, sequentially penetrates through the bearing assembly and the front end cover and is positioned through the front end cover and the planet carrier output shaft, and the shaft end of the lead screw is connected with the pan head screw. Compared with the prior art, the utility model has the advantages of compact structure, simplicity, stability, reliability and the like.
Description
Technical Field
The utility model relates to a direct connection structure of a linear motor.
Background
The linear motor has wide application, and the structure can be suitable for microminiature motors, and can realize working scenes such as point-to-point, linear reciprocating motion and the like. The whole structure mainly comprises a screw rod, a gear box assembly, a bearing assembly, a motor and the like. The motor is operated through the controller, the rotation speed and the number of revolution are regulated, the output shaft of the motor passes through the reduction gearbox and is output by the directly connected screw rod, and the screw rod is matched with the corresponding nut to realize the linear reciprocating motion of the linear motor.
The existing linear hollow cup motor structure has a simple direct connection mode and a threaded connection structure, and has the following problems:
1) The existing direct connection scheme is based on the original hollow cup motor, and the lead screw is used for punching and directly connecting the motor output shaft, so that the defects of difficult overlarge load, breakage of the output shaft connecting section Yi Pilao and the like exist on the structure.
2) According to the threaded connection scheme, the excessive connecting shaft is added at the output shaft end of the reduction gearbox, the excessive shaft is fixedly connected with the screw rod through threads and transmits torque, compared with the direct connection mode, the structure is increased in parts and complex in structure, and the reliability of the whole machine is reduced.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide the linear motor with the direct connection structure, which has compact, simple, stable and reliable structure.
The aim of the utility model can be achieved by the following technical scheme:
According to one aspect of the present utility model, there is provided a direct connection structure of a linear motor including a lead screw, a bearing assembly, a front end cover, and a carrier output shaft;
The lead screw is directly connected with the planet carrier output shaft, sequentially penetrates through the bearing assembly and the front end cover and is positioned through the front end cover and the planet carrier output shaft, and the shaft end of the lead screw is connected with the pan head screw.
As a preferable technical scheme, the screw is provided with a screw stepped shaft connecting section which is in clearance fit with the planet carrier output shaft.
As an optimized technical scheme, the screw stepped shaft connecting section is provided with a screw shaft end glue storage groove.
As an optimal technical scheme, the screw shaft end glue storage groove is provided with a plurality of sections.
As a preferable technical scheme, the screw rod is adhered to the planet carrier output shaft through glue, or the screw rod and the planet carrier output shaft are fixed through welding.
As the preferable technical scheme, the shaft end of the lead screw is provided with a threaded hole, a counter bore is arranged at the corresponding position of the output shaft of the planet carrier, and the lead screw and the output shaft of the planet carrier are fixed through a pan head screw.
As the preferable technical scheme, the planet carrier output shaft is of a hollow shaft structure, and the lead screw stepped shaft connecting section is matched with the hollow shaft hole.
As a preferable technical scheme, the planet carrier output shaft is provided with a planet carrier output shaft shoulder for positioning the bearing assembly and a connecting pin hole for positioning and connecting the gear box.
As the preferable technical scheme, a screw mounting counter bore is formed in the matching surface of the planet carrier output shaft and the gear box.
As a preferred technical scheme, the screw is provided with a screw middle optical axis section, and bearings for supporting are respectively arranged on the screw middle optical axis section and the planet carrier output shaft.
Compared with the prior art, the utility model has the following advantages:
1) Compact structure, simplicity, stability and reliability: according to the utility model, a direct connection mode of the lead screw and the planet carrier output shaft is adopted, the lead screw is provided with the glue storage groove, and the stability and the reliability of the structure are improved through a glue adding and welding process. Meanwhile, the structure is simpler and more compact.
2) The bearing capacity of the linear motor is improved: the utility model adopts direct connection modes such as adhesive, screw fixation and the like, and simultaneously supports the two ends of the planetary output shaft and the screw shaft, thereby providing better bearing capacity and prolonging the service life of the whole machine under the cooperation of the bearing components.
Drawings
FIG. 1 is a schematic diagram of a linear motor according to the present utility model;
FIG. 2 is a schematic view of the assembly structure of the screw and bearing assembly of the present utility model;
FIG. 3 is a schematic view of the connection structure between the screw and the output shaft of the planet carrier according to the present utility model
FIG. 4 is a schematic cross-sectional view of the output shaft of the planet carrier of the present utility model;
FIG. 5 is a schematic diagram of the end face structure of the output shaft of the planet carrier of the present utility model;
Fig. 6 is a schematic view of the structure of the screw rod of the utility model.
Wherein the device comprises a 1-screw, a 2-nut, a 3-bearing component, a 4-gear box, a 5-motor, a 6-planet carrier output shaft, a 7-pan head screw, an 8-screw stepped shaft connecting section, a 9-front end cover, a 10-screw middle optical axis section, a 11-screw shaft end glue storage groove, a 12-planet carrier output shaft shoulder, a 13-nut mounting counter bore, a 14-connecting pin hole, a 15-screw shaft end threaded hole and a 16-bearing
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1 and 2, a linear motor with a direct connection structure comprises a screw rod 1, a nut 2, a bearing assembly 3, a gear box 4, a motor body 5 and a planet carrier output shaft 6; the output shaft of the motor body 5 is connected with the gear box 4, the gear box 4 is connected with the bearing assembly 3, the output shaft in the gear box 4 is connected with the planet carrier output shaft 6, the planet carrier output shaft 6 is connected with the screw rod 1, and the nut 2 is arranged on the screw rod 1 to realize linear motion.
The utility model ensures reliable and stable structure, is suitable for high-precision positioning occasions, meets the requirements of larger axial force and output torque performance, and reduces the process difficulties of assembly and the like.
Wherein the motor body 5 is an output power source.
As shown in fig. 6, the screw 1 is provided with a screw intermediate optical axis section 10 and a screw stepped shaft connecting section 8 which is clearance-fitted with the carrier output shaft 6. The lead screw middle optical axis section 10 and the planet carrier output shaft 6 are respectively provided with a bearing 16 for supporting, so that the stability and the reliability of the connecting piece are improved.
As shown in fig. 3, the screw stepped shaft connecting section 8 is provided with a screw shaft end glue storage groove 11. The screw shaft end glue storage groove 11 is provided with a plurality of sections, can be used for glue deposition and forming a proper curing layer, can be better adhered to the output shaft of the planet carrier, and keeps better torque transmission. The lead screw is provided with a glue storage groove and the output shaft of the planet carrier, and the stability and the reliability of the structure are improved through a glue adding and welding process.
The lead screw 1 is adhered to the planet carrier output shaft 6 through glue, or the lead screw and the planet carrier output shaft are fixed through welding; the clearance fit is arranged in the middle, so that the clearance fit of the bearing is easy to be eliminated, and the installation is compact.
The shaft end of the screw rod 1 is provided with a threaded hole 15, a counter bore is arranged at a corresponding position of the planet carrier output shaft 6, and the screw rod 1 and the planet carrier output shaft 6 are fixed through a pan head screw 7.
As shown in fig. 4 and 5, the planet carrier output shaft 6 has a hollow shaft structure, and the screw stepped shaft connecting section 8 is matched with the hollow shaft hole. The planet carrier output shaft 6 is provided with a planet carrier output shaft shoulder 12 for locating the bearing assembly 3 and a connecting pin hole 14 for locating and connecting the gearbox 4. The matching surface of the planet carrier output shaft 6 and the gear box 4 is provided with a screw mounting counter bore 13.
The working principle of the linear motor in the embodiment is as follows:
The motor body 5 outputs torque to drive the gear box 4, an output shaft in the gear box is connected with the planet carrier output shaft 6 to transmit torque, and the directly connected screw rod 1 is matched with the nut 13 to realize linear motion.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The direct connection structure of the linear motor is characterized by comprising a screw rod (1), a bearing assembly (3), a front end cover (9) and a planet carrier output shaft (6);
The lead screw (1) is directly connected with the planet carrier output shaft (6), the lead screw (1) sequentially penetrates through the bearing assembly (3) and the front end cover (9) and is positioned through the front end cover (9) and the planet carrier output shaft (6), and the shaft end of the lead screw (1) is connected with the pan head screw (7).
2. A direct connection structure of a linear motor according to claim 1, characterized in that the screw (1) is provided with a screw stepped shaft connection section (8) which is in clearance fit with the planet carrier output shaft (6).
3. The direct connection structure of a linear motor according to claim 2, wherein the screw stepped shaft connecting section (8) is provided with a screw shaft end glue storage groove (11).
4. A direct connection structure of a linear motor according to claim 3, characterized in that the screw shaft end glue storage groove (11) is provided with a plurality of sections.
5. A direct connection structure of a linear motor according to claim 3, characterized in that the screw (1) is glued to the planet carrier output shaft (6) by glue or both are fixed by welding.
6. The direct connection structure of the linear motor according to claim 1, wherein the shaft end of the screw rod (1) is provided with a threaded hole (15), the corresponding position of the planet carrier output shaft (6) is provided with a counter bore, and the screw rod (1) and the planet carrier output shaft (6) are fixed through a pan head screw (7).
7. A direct connection structure of a linear motor according to claim 2, characterized in that the planet carrier output shaft (6) is a hollow shaft structure, and the screw stepped shaft connecting section (8) is matched with the hollow shaft hole.
8. A direct connection structure of a linear motor according to claim 1, characterized in that the planet carrier output shaft (6) is provided with a planet carrier output shaft shoulder (12) for positioning the bearing assembly (3) and a connecting pin hole (14) for positioning and connecting the gearbox (4).
9. The direct connection structure of the linear motor according to claim 1, wherein screw mounting counter bores (13) are formed in the matching surface of the planet carrier output shaft (6) and the gear box (4).
10. A direct connection structure of a linear motor according to claim 1, characterized in that the screw (1) is provided with a screw intermediate optical axis section (10), the screw intermediate optical axis section (10) and the planet carrier output shaft (6) being respectively mounted with bearings (16) for support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322597644.0U CN220934966U (en) | 2023-09-25 | 2023-09-25 | Linear motor's straight connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322597644.0U CN220934966U (en) | 2023-09-25 | 2023-09-25 | Linear motor's straight connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220934966U true CN220934966U (en) | 2024-05-10 |
Family
ID=90938771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322597644.0U Active CN220934966U (en) | 2023-09-25 | 2023-09-25 | Linear motor's straight connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220934966U (en) |
-
2023
- 2023-09-25 CN CN202322597644.0U patent/CN220934966U/en active Active
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