CN218387116U - Linear motor with it is flexible stable and precision is high - Google Patents
Linear motor with it is flexible stable and precision is high Download PDFInfo
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- CN218387116U CN218387116U CN202220289494.XU CN202220289494U CN218387116U CN 218387116 U CN218387116 U CN 218387116U CN 202220289494 U CN202220289494 U CN 202220289494U CN 218387116 U CN218387116 U CN 218387116U
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- main body
- body shell
- worm
- push rod
- linear motor
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Abstract
The utility model discloses a linear motor with stable expansion and high precision, which belongs to a linear motor in the technical field of linear motors, and adopts the technical scheme that the linear motor comprises a main body shell and a push rod arranged in the main body shell in a sliding way, wherein the end of the push rod arranged in the main body shell is telescopically arranged relative to the main body shell through a lead screw transmission assembly, a worm and gear assembly is also arranged in the main body shell, and the output end of the worm and gear assembly is used for carrying out transmission setting on the input end of the lead screw transmission assembly; the worm gear assembly is arranged inside the end head of the closed end of the main body shell, and a worm in the worm gear assembly is vertically and rotatably arranged with the main body shell and is connected with a motor spindle; the utility model provides a linear electric motor with flexible stability and precision are high realizes accurate concertina movement in the main part shell, and the further stability of having strengthened the push rod motion that sets up of guide bar subassembly.
Description
Technical Field
The utility model belongs to the technical field of linear electric motor, concretely relates to linear electric motor with flexible stability and precision are high.
Background
The linear motor is different from the traditional motor, and the greatest difference of the linear motor is that a mechanical transmission link from the motor to a workbench (carriage) is cancelled, the length of a machine tool feeding transmission chain is shortened to zero, and a direct drive mode is changed; due to the zero transmission mode, performance indexes and advantages which cannot be achieved by the original rotary motor driving mode are brought, and the linear motor is mostly applied to the application fields of machine tools, semiconductors, solar photovoltaic, automation industries and the like due to no oil and no dust.
The linear motor in the prior art is not compact enough in mechanism, and can receive great resistance in the driving process, so that the linear motor is easy to have the problem of precision in the telescopic operation process, the linear guide motion of the linear motor is not accurate enough, and the guide strength of the linear motion in the linear motor needs to be increased, so that the stability of the telescopic motion of the linear motor is enhanced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a linear electric motor with flexible stable and precision is high through set up the push rod in main part shell inside to make the push rod realize accurate concertina movement in the main part shell under the transmission of worm gear subassembly and lead screw drive assembly, the stability of push rod motion has further been strengthened in the setting of guide bar subassembly.
In order to realize the purpose, the utility model discloses a technical scheme be: the telescopic screw rod type screw rod driving device comprises a main body shell and a push rod arranged in the main body shell in a sliding mode, wherein one end, arranged in the main body shell, of the push rod is arranged in the main body shell in a telescopic mode relative to the main body shell through a screw rod driving assembly, a worm gear assembly is further arranged in the main body shell, and the output end of the worm gear assembly is used for driving the input end of the screw rod driving assembly; the worm gear assembly is arranged inside the end head of the closed end of the main body shell, and a worm in the worm gear assembly is vertically and rotatably arranged with the main body shell and connected with a motor spindle.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. in the utility model, the push rod which slides relatively inside the main body shell is arranged inside the main body shell, and the push rod is driven by the gear type meshing under the transmission action of the worm gear assembly and the lead screw transmission assembly, and the stability and the accuracy of the telescopic motion on a straight line are improved due to the characteristic of gear transmission; further, the worm gear assembly carries out the transport after direct connection to the power supply of motor, and the speed governing to the push rod at the inside motion of main part shell can be realized to the drive ratio of worm gear assembly, strengthens the great pivoted speed control to the motor from this to make the push rod have the suitability in the inside relative motion speed of main part shell.
2. The utility model discloses in, owing to set up fixed baseplate inside the main part shell to set up the drive cavity in fixed baseplate, the drive cavity realizes the space that the installation set up of meshing between worm and the turbine, makes its internally mounted's part more have the function that can dismantle fixed mounting, and the center pin of turbine sets up with the center pin of worm is perpendicular, and makes to carry out highly anastomotic meshing between turbine and the worm and be connected, improves driven stability between turbine and the worm.
3. In the utility model, the screw rod is rotationally arranged on the fixed base and rotationally arranged in the cavity of the main body shell under the transmission of the turbine, and further, the push rod is slidably arranged in the main body shell and is connected with the screw rod through the arranged internal thread, and simultaneously, under the guiding action of the guide rod component, the rotation of the push rod rotating in the circumferential direction is limited, so that the push rod can be controlled to move in a telescopic way in the main body shell under the action of the screw rod; and the arrangement of the guide rod component strengthens the stability of the telescopic motion of the push rod in the linear direction.
4. The utility model discloses in, the tip of being connected push rod opening and lead screw passes through the internal thread cover and carries out relative threaded connection setting for internal thread in the push rod can adopt the setting of carrying out relative installation through the internal thread cover, has reduced the direct degree of difficulty that carries out female thread processing inside the push rod, improves the convenience of its equipment production.
5. The utility model discloses in, there is the wear-resisting ring of direction at main part shell open-ended end fixing endotheca for carry out relative sliding connection through the wear-resisting ring of direction between push rod and the main part shell, also improve the stability of its sliding contact port when reinforcing both gliding smooth and easy properties.
6. In the utility model, the rotary connection between the screw rod and the side plate on the fixed base is realized through the rotary connection of the thrust bearing, so that the power transmission efficiency is high, the heat productivity is low, the lubrication and maintenance are convenient, in addition, the lubricant can be saved, the internal clearance of the thrust bearing is small, the processing precision is high, and the bearing rigidity can be improved by applying pre-pressing; therefore, under the action of clamping the shaft sleeve, the rigidity of the shaft sleeve is improved, and the stability of rotation control is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic view of the internal structure of the linear motor of the present invention;
fig. 2 is a schematic view of the connection between the thrust bearing set and the screw rod of the present invention.
The mark in the figure is: 1-main body shell, 2-push rod, 3-screw rod transmission component, 4-worm gear component, 5-worm, 6-fixed base, 7-driving cavity, 8-connecting mounting head, 9-turbine, 10-screw rod, 11-guide rod component, 12-guide rod, 13-limiting block, 14-guide hole, 15-elastic retainer ring, 16-thrust bearing group, 17-fixed base side plate, 18-first thrust bearing, 19-second thrust bearing, 20-shaft sleeve and 21-guide wear-resisting ring.
Detailed Description
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
A linear motor with stable expansion and high precision comprises a main body shell 1 and a push rod 2 arranged in the main body shell 1 in a sliding mode, wherein one end, arranged in the main body shell 1, of the push rod 2 is arranged in the main body shell 1 in an expansion and contraction mode relative to the main body shell 1 through a screw rod transmission assembly 3, a worm and gear assembly 4 is further arranged in the main body shell 1, and the output end of the worm and gear assembly 4 is used for carrying out transmission setting on the input end of the screw rod transmission assembly 3; the worm gear assembly 4 is arranged inside the end head of the closed end of the main body shell 1, and a worm 5 in the worm gear assembly 4 is vertically and rotatably arranged with the main body shell 1 and is connected with a motor spindle; the push rod 2 which slides relatively in the main body shell 1 is arranged in the main body shell, and the push rod 2 is in gear type meshing transmission under the transmission action of the worm gear assembly 4 and the screw rod transmission assembly 3, so that the stability and the accuracy of changing the rotation mode into linear telescopic motion are enhanced due to the characteristic of gear transmission; further, the worm gear assembly 4 carries out the transport after direct connection to the power supply of motor, and the speed governing to push rod 2 at the inside motion of main part shell 1 can be realized to the drive ratio of worm gear assembly 4, strengthens the great pivoted speed regulation of motor from this to make push rod 2 have the suitability in main part shell 1 inside relative velocity of motion.
The worm and gear assembly 4 comprises a fixed base 6 fixedly arranged in the main body shell 1 and a driving cavity 7 arranged in the fixed base 6, and the fixed base 6 is fixedly arranged with the end part of the main body shell 1 through a connecting mounting head 8; the worm and gear assembly 4 further comprises a worm wheel 9 which is arranged in the driving cavity 7 and meshed with the worm 5, and a central shaft of the worm wheel 9 is vertical to a central shaft of the worm 5; because the fixed base 6 is arranged in the main body shell 1, the driving cavity 7 is arranged in the fixed base 6, the driving cavity 7 realizes the space for meshing, mounting and setting between the worm 5 and the worm wheel 9, so that the parts mounted in the driving cavity have the functions of detachable fixed mounting, the central shaft of the worm wheel 9 is perpendicular to the central shaft of the worm 5, the worm wheel 9 and the worm 5 are in meshing connection with each other in a high fit mode, and the transmission stability between the worm wheel 9 and the worm 5 is improved.
The screw rod transmission assembly 3 comprises a screw rod 10 and a guide rod assembly 11, wherein one end of the screw rod 10 is rotationally connected with the fixed base 6, and the guide rod assembly 11 is used for linearly guiding the push rod 2; the push rod 2 is of a hollow structure with an opening at one end, and the interior of the push rod 2 is in threaded connection with the screw rod 10 through an internal thread; one end of the screw rod 10, which is rotatably connected with the fixed base 6, is arranged in the driving cavity 7 and is fixedly connected with the turbine 9 in the central shaft direction of the turbine 9; the screw rod 10 is rotatably arranged on the fixed base 6, and is rotatably arranged in the cavity of the main body shell 1 under the transmission of the turbine 9, further, the push rod 2 is slidably arranged in the main body shell 1, and the inner part of the push rod is in threaded connection with the screw rod 10 through the arranged internal thread, and meanwhile, under the guiding action of the guide rod assembly 11, the push rod 2 is subjected to autorotation limitation rotating in the circumferential direction, so that the push rod 2 can be moved in a telescopic control manner in the main body shell 1 under the action of the screw rod 10; and the guide rod assembly 11 is arranged to enhance the stability of the telescopic motion of the push rod 2 in the linear direction.
The guide rod assembly 11 comprises a guide rod 12 arranged in parallel with the screw rod 10, and a limiting block 13 fixedly sleeved at the end part of the push rod 2, wherein the limiting block 13 is connected with the guide rod 12 in a sliding manner through a guide hole 14; one end of the guide rod 12 is fixedly connected with the fixed base 6, and the other end of the guide rod 12 is fixedly connected with the open end of the main body shell 1.
An internal thread sleeve is fixedly arranged at one open end of the push rod 2 and is in threaded connection with the screw rod 10; the end part of the opening of the push rod 2 connected with the lead screw 10 is provided with a relative thread through the internal thread sleeve, so that the internal thread in the push rod 2 can adopt the arrangement of relative installation through the internal thread sleeve, the difficulty of directly processing the internal thread in the push rod 2 is reduced, and the convenience of the equipment production is improved.
The end part of the opening of the main body shell 1 is fixedly sleeved with a guide wear-resistant ring 21, the push rod 2 and the guide wear-resistant ring 21 are arranged in the end part of the opening of the main body shell 1 in a sliding mode, the guide wear-resistant ring 21 is sleeved in the end part of the opening of the main body shell, so that the push rod 2 and the main body shell 1 are in relative sliding connection through the guide wear-resistant ring 21, the sliding smoothness of the push rod 2 and the main body shell is enhanced, and the stability of a sliding contact port of the push rod is improved.
The end part of the screw rod 10 arranged on the push rod 2 is provided with an elastic retainer ring 15.
The screw rod 10 is rotatably arranged with the fixed base 6 through a thrust bearing group 16, the thrust bearing group 16 comprises a first thrust bearing 18 fixedly arranged on one side of a side plate 17 of the fixed base and a second thrust bearing 19 fixedly arranged on the other side of the side plate 17 of the fixed base, and the first thrust bearing 18 and the second thrust bearing 19 are clamped on the side plate 17 of the fixed base through a shaft sleeve 20; the screw rod 10 is rotatably connected with the side plate on the fixed base 6 through the thrust bearing, so that the effects of high power transmission efficiency, low heat productivity and convenience in lubrication and maintenance are achieved, a lubricant can be saved, the machining precision is high due to small internal clearance of the thrust bearing, and the rigidity of the bearing can be improved by applying pre-pressing; therefore, under the action of clamping arrangement of the shaft sleeve 20, the rigidity of the shaft sleeve is improved, and the stability of rotation control is enhanced.
The working principle and the working process of the utility model
In the utility model, the push rod 2 which slides relatively inside the main body shell 1 is arranged, and the push rod 2 is driven to carry out gear type meshing under the transmission action of the worm gear assembly 4 and the screw rod transmission assembly 3, and the stability and the accuracy of the telescopic motion on a straight line are improved due to the characteristic of gear transmission; further, the worm gear assembly 4 carries out the transport after direct connection to the power supply of motor, and the speed governing to push rod 2 at the inside motion of main part shell 1 can be realized to the drive ratio of worm gear assembly 4, strengthens the great pivoted speed regulation of motor from this to make push rod 2 have the suitability in main part shell 1 inside relative velocity of motion.
Furthermore, as the fixing base 6 is arranged inside the main body shell 1, the driving cavity 7 is arranged in the fixing base 6, and the driving cavity 7 is used for realizing the space for meshing, mounting and setting between the worm 5 and the worm wheel 9, so that the parts mounted inside the driving cavity have the functions of detachable fixed mounting, the central shaft of the worm wheel 9 is perpendicular to the central shaft of the worm 5, the worm wheel 9 and the worm 5 are in meshing connection with each other in a high fit mode, and the transmission stability between the worm wheel 9 and the worm 5 is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included in the scope of the claims and description of the present invention.
Claims (8)
1. A linear motor with stable stretching and high precision comprises a main body shell (1) and a push rod (2) arranged in the main body shell (1) in a sliding mode, and is characterized in that one end, arranged in the main body shell (1), of the push rod (2) is arranged in a telescopic mode relative to the main body shell (1) through a lead screw transmission assembly (3), a worm and gear assembly (4) is further arranged inside the main body shell (1), and the output end of the worm and gear assembly (4) is used for driving the input end of the lead screw transmission assembly (3); the worm and gear assembly (4) is arranged inside the end head of the closed end of the main body shell (1), and a worm (5) in the worm and gear assembly (4) is vertically and rotatably arranged with the main body shell (1) and is connected with a motor spindle.
2. The linear motor with stable extension and retraction and high precision is characterized in that the worm and gear assembly (4) comprises a fixed base (6) fixedly arranged inside the main body shell (1), a driving cavity (7) arranged in the fixed base (6), and the fixed base (6) is fixedly arranged with the end part of the main body shell (1) through a connecting mounting head (8); the worm and gear assembly (4) further comprises a worm wheel (9) which is arranged in the driving cavity (7) and meshed with the worm (5), and a central shaft of the worm wheel (9) is perpendicular to a central shaft of the worm (5).
3. The linear motor with stable extension and high precision according to claim 2 is characterized in that the screw rod transmission assembly (3) comprises a screw rod (10) with one end rotatably connected with the fixed base (6), and a guide rod assembly (11) for linearly guiding the push rod (2); the push rod (2) is of a hollow structure with an opening at one end, and the interior of the push rod (2) is in threaded connection with the screw rod (10) through an internal thread; one end of the screw rod (10) rotatably connected with the fixed base (6) is arranged in the driving cavity (7) and is fixedly connected with the turbine (9) in the central shaft direction of the turbine (9).
4. The linear motor with stable telescoping and high precision as claimed in claim 3, wherein the guide rod assembly (11) comprises a guide rod (12) arranged in parallel with the screw rod (10), a limit block (13) fixedly sleeved on the end of the push rod (2), the limit block (13) is connected with the guide rod (12) in a sliding manner through a guide hole (14); one end of the guide rod (12) is fixedly connected with the fixed base (6), and the other end of the guide rod (12) is fixedly connected with the end part of the opening of the main body shell (1).
5. The linear motor with the advantages of stable expansion and high precision according to claim 3 is characterized in that an internal thread sleeve is fixedly arranged at one open end of the push rod (2), and the internal thread sleeve is in threaded connection with the screw rod (10).
6. The linear motor with stable extension and high precision as claimed in any one of claims 1 to 5, wherein the open end of the main body housing (1) is fixedly sleeved with a guiding wear-resistant ring (21), and the push rod (2) is slidably arranged with the guiding wear-resistant ring (21).
7. A linear motor with stable expansion and high precision according to claim 3, characterized in that the end of the screw rod (10) arranged on the push rod (2) is provided with a resilient collar (15).
8. The linear motor with stable telescoping and high precision according to claim 7, wherein the screw rod (10) is rotatably disposed with the fixed base (6) through a thrust bearing set (16), the thrust bearing set (16) comprises a first thrust bearing (18) fixedly disposed on one side of the fixed base side plate (17) and a second thrust bearing (19) fixedly disposed on the other side of the fixed base side plate (17), and the first thrust bearing (18) and the second thrust bearing (19) are clamped on the fixed base side plate (17) through a shaft sleeve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289494.XU CN218387116U (en) | 2022-02-14 | 2022-02-14 | Linear motor with it is flexible stable and precision is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289494.XU CN218387116U (en) | 2022-02-14 | 2022-02-14 | Linear motor with it is flexible stable and precision is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218387116U true CN218387116U (en) | 2023-01-24 |
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ID=84950574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220289494.XU Active CN218387116U (en) | 2022-02-14 | 2022-02-14 | Linear motor with it is flexible stable and precision is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218387116U (en) |
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2022
- 2022-02-14 CN CN202220289494.XU patent/CN218387116U/en active Active
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