CN220382889U - Electric control precise linear motion mechanism - Google Patents
Electric control precise linear motion mechanism Download PDFInfo
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- CN220382889U CN220382889U CN202321778085.7U CN202321778085U CN220382889U CN 220382889 U CN220382889 U CN 220382889U CN 202321778085 U CN202321778085 U CN 202321778085U CN 220382889 U CN220382889 U CN 220382889U
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- differential head
- encoder
- linear motion
- motion mechanism
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- 230000008878 coupling Effects 0.000 abstract description 11
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- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses an electric control precise linear motion mechanism which comprises a motor, a differential head and a machine shell, wherein the main body parts of the motor and the differential head are arranged in the machine shell, the motor is arranged in the machine shell in a sliding manner, the motor is connected with one end of the differential head, and an actuating rod of the differential head extends out of the machine shell. The utility model adopts the encoder and the controller to finally control the moving distance of the actuating rod/the axial thrust of the actuating rod, and the service life of the motor can be prolonged because the motor is not subjected to axial force/torsion force at any time. And when the encoder senses the rotation position of the main body part of the differential head, the mechanical backlash of the reduction gear connected with the motor does not affect the actual position. In addition, the motor can freely slide along with the micro-head, and the precision can be improved without using a coupling with high elasticity. The motor of the utility model can not bear axial force, and can prolong the service life of the motor.
Description
Technical Field
The utility model belongs to the technical field of linear motion mechanisms, and particularly relates to an electric control precise linear motion mechanism.
Background
The existing electric cylinder, electric differential head and the like are all precise machines for driving an actuating rod to perform linear motion, and the structure of the electric cylinder and the electric differential head is as follows: when the differential head is rotated, the main body of the differential head moves axially, and meanwhile, the actuating rod of the differential head moves axially in the opposite direction, and as the main body of the differential head is connected with the motor and the motor is always fixed, the motor and the main body of the differential head are always connected by adopting a spring coupler, a diaphragm coupler, an 8-shaped coupler, a corrugated pipe coupler and the like, and therefore, the spring coupler, the diaphragm coupler, the 8-shaped coupler, the corrugated pipe coupler and the like have certain compression or stretching, and the motor always needs to be enabled and has certain torsion.
Therefore, the conventional electric cylinder and electric differential head have the following defects: because the motor is fixed, the motor needs to keep current when needing to keep torque, and the motor always needs to be subjected to axial force, the motor generates serious heat, and the service life of the motor is shortened.
In addition, the existing linear motion mechanisms are basically used for pushing nuts directly through screw rods, and the precision is low.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide an electric control precise linear motion mechanism.
The technical scheme adopted by the utility model is as follows:
the utility model provides an automatically controlled accurate rectilinear motion mechanism, includes motor, differential head and casing, the main part of motor and differential head is all established in the casing, the motor slides and establishes in the casing, the motor with the one end of differential head links to each other, the actuating lever of differential head stretches out the casing.
In some embodiments, the device further comprises a coding disc, an encoder and a controller, wherein the coding disc rotates together with the differential head, the encoder senses the rotation position of the coding disc, generates a corresponding position signal and sends the position signal to the controller, and when the position reaches a set value, the controller sends a control signal to the motor, and the motor executes the control signal. Therefore, the position to be rotated of the coding disc can be preset, the rotating position of the coding disc corresponds to the moving distance of the actuating rod, and when the preset position is reached, the motor stops moving and enters the next stage.
In some embodiments, a sliding table is arranged on the inner wall of the casing, and the sliding table is slidably connected with one side of the motor. Therefore, the motor can move along the sliding table, so that the motor does not need to be always subjected to axial force, and the working time of the motor is reduced.
In some embodiments, a sliding plate is arranged on one side of the motor, and the sliding plate is clamped on the sliding table and can move along the sliding table. Thereby, the motor can be moved along the slide table by the slide plate.
In some embodiments, the coding disc is arranged at the upper end of the main body part of the differential head, the coding disc synchronously rotates along with the main body part of the differential head, the coder is arranged on the sliding plate, and the axial position between the coder and the coding disc is always relatively unchanged. Therefore, the signal of the rotary position of the coding disc sensed by the encoder belongs to the rotary position of the motor after the motor is decelerated, and therefore the precision is higher.
In some embodiments, the device further comprises an encoder and a controller, wherein a light and dark stripe is arranged on the main body part of the differential head, the light and dark stripe rotates the encoder along with the differential head to sense the rotation position of the light and dark stripe, a corresponding position signal is generated, the position signal is sent to the controller, when the position reaches a set value, the controller sends a control signal to a motor, and the motor executes the control signal. Therefore, the position to be rotated can be preset by sensing the bright and dark stripes and is equivalent to sensing rotation, the rotating position of the bright and dark stripes corresponds to the moving distance of the actuating rod, and when the rotating position reaches the set position, the motor stops moving and enters the next stage.
In some embodiments, the coding disc is arranged at the upper end of the motor, the coding disc rotates along with the rotating shaft of the motor, the coder is arranged at the upper end of the motor, and the axial position between the coder and the coding disc is always relatively unchanged. Thus, this type of encoder can correspond to the position where the motor does not pass through the reduction gear, and the accuracy is lower than the two modes, but the motor moves, so the motor does not need to always receive axial force.
The beneficial effects of the utility model are as follows: the utility model adopts the encoder and the controller to finally control the moving distance of the actuating rod/the axial thrust of the actuating rod, and the service life of the motor can be prolonged because the motor is not subjected to axial force/torsion force at any time. And when the encoder senses the rotation position of the main body part of the differential head, the mechanical backlash of the reduction gear connected with the motor does not affect the actual position.
The motor of the utility model can freely slide along the micro-head, and does not use a coupling with large elasticity (a spring coupling, a diaphragm coupling, an 8-shaped coupling, a corrugated pipe coupling and the like), thereby improving the precision.
The motor of the utility model can not bear axial force, and can prolong the service life of the motor.
Drawings
FIG. 1 is a schematic diagram of an electrically controlled precision linear motion mechanism according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the electronic control precision linear motion mechanism shown in FIG. 1 after a part of the casing is hidden;
FIG. 3 is a schematic view of the electrically controlled precision linear motion mechanism shown in FIG. 1 after hiding the housing;
FIG. 4 is a schematic view of an electrically controlled precision linear motion mechanism (hidden housing) according to another embodiment of the present utility model;
fig. 5 is a schematic structural view of an electrically controlled precise linear motion mechanism (hidden casing) according to another embodiment of the present utility model.
In the figure: 1-a motor; 11-a sliding plate; 2-differentiating heads; 21-an actuator rod; 3-a housing; 31-a sliding table; 4-a code wheel; 5-encoder.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Embodiment one:
fig. 1 to 3 schematically show the structure of an electrically controlled precision linear motion mechanism according to an embodiment of the present utility model.
Referring to fig. 1 to 3, an electrically controlled precise linear motion mechanism comprises a motor 1, a micro head 2 and a casing 3, wherein the main parts of the motor 1 and the micro head 2 are arranged in the casing 3, the motor 1 is slidably arranged in the casing 3, the motor 1 is connected with the upper end of the micro head 2, and an actuating rod 21 of the micro head 2 extends out of the casing 3.
The motor 1 is connected with the differential head 2 through a reduction gear, which is a conventional means, and the specific connection mode is not described again.
In this embodiment, as shown in fig. 1, the encoder comprises a code disc 4, an encoder 5 and a controller, the code disc 4 rotates together with the differential head 2, the encoder 5 senses the rotation position of the code disc 4, generates a corresponding position signal, and sends the position signal to the controller, when the position reaches a set value, the controller sends a control signal to the motor 1, the motor 1 executes the control signal, the position where the code disc 4 rotates can be set in advance, the rotation position of the code disc 4 corresponds to the movement distance of the actuating rod 21, and when the set position is reached, the motor 1 stops moving and enters the next stage.
In this embodiment, as shown in fig. 2 and 3, a sliding table 31 is disposed on the inner wall of the casing 3, the sliding table 31 is slidably connected with one side of the motor 1, the motor 1 can move along the sliding table 31, the motor 1 does not need to be always subjected to axial force, and the working time of the motor 1 is reduced.
In the present embodiment, as shown in fig. 3, a slide plate 11 is mounted on one side of the motor 1, the slide plate 11 can be caught on the slide table 31 and can move along the slide table 31, and the motor 1 can move along the slide table 31 by the slide plate 11.
As shown in fig. 2 and 3, the encoder 4 is mounted on the upper end of the main body of the differential head 2, so that the encoder 4 rotates synchronously with the main body of the differential head 2, the encoder 5 is mounted on the sliding plate 11, the axial position between the encoder 5 and the encoder 4 is always relatively unchanged, and the signal of the rotational position of the encoder 4 sensed by the encoder 5 belongs to the rotational position after the reduction gear of the motor 1, so that the precision is higher.
Embodiment two:
as shown in fig. 4, an electrically controlled precise linear motion mechanism comprises a motor 1, a micro head 2 and a casing 3, wherein the main parts of the motor 1 and the micro head 2 are arranged in the casing 3, the motor 1 is slidably arranged in the casing 3, the motor 1 is connected with the upper end of the micro head 2, and an actuating rod 21 of the micro head 2 extends out of the casing 3.
In this embodiment, as shown in fig. 4, a sliding table 31 is disposed on an inner wall of the casing 3, the sliding table 31 is slidably connected with one side of the motor 1, the motor 1 can move along the sliding table 31, the motor 1 does not need to be always subjected to axial force, and the working time of the motor 1 is reduced.
In the present embodiment, as shown in fig. 4, a slide plate 11 is mounted on one side of the motor 1, the slide plate 11 can be caught on the slide table 31 and can move along the slide table 31, and the motor 1 can move along the slide table 31 by the slide plate 11.
In this embodiment, the micro head further includes an encoder 5 and a controller, the main body portion of the micro head 2 is provided with a bright-dark stripe, the bright-dark stripe rotates the encoder 5 along with the micro head 2 to sense the rotation position of the bright-dark stripe, a corresponding position signal is generated, the position signal is sent to the controller, when the position reaches a set value, the controller sends a control signal to the motor 1, and the motor 1 executes the control signal. Thus, by sensing the bright-dark fringes, which correspond to the sensing rotation, the position to be rotated can be set in advance, and the position at which the bright-dark fringes are rotated corresponds to the moving distance of the actuator lever 21, and when the set position is reached, the motor 1 stops moving and enters the next stage.
Embodiment III:
as shown in fig. 5, an electrically controlled precise linear motion mechanism comprises a motor 1, a micro head 2 and a casing 3, wherein the main parts of the motor 1 and the micro head 2 are arranged in the casing 3, the motor 1 is slidably arranged in the casing 3, the motor 1 is connected with the upper end of the micro head 2, and an actuating rod 21 of the micro head 2 extends out of the casing 3.
In this embodiment, as shown in fig. 5, the encoder 4, the encoder 5 and the controller are further included, the encoder 4 rotates together with the differential head 2, the encoder 5 senses the rotation position of the encoder 4, generates a corresponding position signal, and sends the position signal to the controller, when the position reaches a set value, the controller sends a control signal to the motor 1, the motor 1 executes the control signal, the position where the encoder 4 rotates can be set in advance, the position where the encoder 4 rotates corresponds to the movement distance of the actuating lever 21, and when the set position is reached, the motor 1 stops moving and enters the next stage.
In this embodiment, as shown in fig. 5, a sliding table 31 is disposed on an inner wall of the casing 3, the sliding table 31 is slidably connected with one side of the motor 1, the motor 1 can move along the sliding table 31, the motor 1 does not need to be always subjected to axial force, and the working time of the motor 1 is reduced.
In the present embodiment, as shown in fig. 5, a slide plate 11 is mounted on one side of the motor 1, the slide plate 11 can be caught on the slide table 31 and can move along the slide table 31, and the motor 1 can move along the slide table 31 by the slide plate 11.
In this embodiment, as shown in fig. 5, the encoder 4 is disposed at the upper end of the motor 1, the encoder 4 rotates along with the rotating shaft of the motor 1, the encoder 5 is disposed at the upper end of the motor 1, the axial position between the encoder 5 and the encoder 4 is not changed relatively all the time, the encoder 5 in this form can correspond to the position of the motor 1 which does not pass through the reduction gear, the accuracy is lower than that of the two modes, but the motor 1 can move, so that the motor 1 does not need to be always subjected to axial force.
The encoder 5 may be a photoelectric sensor or a magnetic encoder, and the encoder 5 may be further divided into an incremental encoder and an absolute encoder, which are each a specific encoder of the present utility model. The incremental encoder senses the amount of change in position, while the absolute encoder senses the overall change in position.
The utility model adopts the encoder 5 and the controller to finally control the moving distance of the actuating rod 21 and the axial thrust of the actuating rod 21, and the service life of the motor can be prolonged because the motor 1 can not receive axial force/torsion force at any time. And when the encoder senses the rotation position of the main body part of the differential head, the mechanical backlash of the reduction gear connected with the motor does not influence the actual position, and the precision is higher.
The motor 1 of the present utility model can freely slide along the differential head 2, and can improve accuracy without using a coupling having large elasticity (a spring coupling, a diaphragm coupling, an 8-shaped coupling, a bellows coupling, or the like).
The motor 1 of the utility model can not bear axial force, and the service life of the motor 1 can be prolonged.
The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.
Claims (7)
1. An electronic control precise linear motion mechanism is characterized in that: the device comprises a motor (1), a differential head (2) and a casing (3), wherein the main body parts of the motor (1) and the differential head (2) are arranged in the casing (3), the motor (1) is arranged in the casing (3) in a sliding mode, the motor (1) is connected with one end of the differential head (2), and an actuating rod (21) of the differential head (2) extends out of the casing (3).
2. The electronically controlled precision linear motion mechanism of claim 1, wherein: the device comprises a differential head (2), and is characterized by further comprising a coding disc (4), an encoder (5) and a controller, wherein the coding disc (4) rotates together with the differential head (2), the encoder (5) senses the position change of the coding disc (4), generates a corresponding position signal, and sends the position signal to the controller, when the position reaches a set value, the controller sends a control signal to a motor (1), and the motor (1) executes the control signal.
3. The electronically controlled precision linear motion mechanism of claim 2, wherein: the inner wall of the shell (3) is provided with a sliding table (31), and the sliding table (31) is in sliding connection with one side of the motor (1).
4. An electronically controlled precision linear motion mechanism according to claim 3, wherein: one side of the motor (1) is provided with a sliding plate (11), and the sliding plate (11) is clamped on the sliding table (31) and can move along the sliding table (31).
5. The electronically controlled precision linear motion mechanism of claim 4, wherein: the coding disc (4) is arranged at the upper end of the main body part of the differential head (2), the coding disc (4) synchronously rotates along with the main body part of the differential head (2), the coder (5) is arranged on the sliding plate (11), and the axial position between the coder (5) and the coding disc (4) is always relatively unchanged.
6. The electronically controlled precision linear motion mechanism of claim 1, wherein: the micro head is characterized by further comprising an encoder (5) and a controller, wherein a light and dark stripe is arranged on the main body of the micro head (2), the light and dark stripe rotates the encoder (5) along with the micro head (2) to sense the rotation position of the light and dark stripe, a corresponding position signal is generated, the position signal is sent to the controller, when the position reaches a set value, the controller sends a control signal to the motor (1), and the motor (1) executes the control signal.
7. The electronically controlled precision linear motion mechanism of claim 4, wherein: the coding disc (4) is arranged at the upper end of the motor (1), the coding disc (4) rotates along with the rotating shaft of the motor (1), the coder (5) is arranged at the upper end of the motor (1), and the axial position between the coder (5) and the coding disc (4) is always relatively unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321778085.7U CN220382889U (en) | 2023-07-06 | 2023-07-06 | Electric control precise linear motion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321778085.7U CN220382889U (en) | 2023-07-06 | 2023-07-06 | Electric control precise linear motion mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN220382889U true CN220382889U (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321778085.7U Active CN220382889U (en) | 2023-07-06 | 2023-07-06 | Electric control precise linear motion mechanism |
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| CN (1) | CN220382889U (en) |
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2023
- 2023-07-06 CN CN202321778085.7U patent/CN220382889U/en active Active
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