CN117997032A - Initiative damping rectilinear motion module - Google Patents
Initiative damping rectilinear motion module Download PDFInfo
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- CN117997032A CN117997032A CN202410137983.7A CN202410137983A CN117997032A CN 117997032 A CN117997032 A CN 117997032A CN 202410137983 A CN202410137983 A CN 202410137983A CN 117997032 A CN117997032 A CN 117997032A
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- 238000013016 damping Methods 0.000 title claims description 4
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- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
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- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The invention discloses an active vibration reduction linear motion module, which relates to the technical field of linear motors and comprises a base, a vibration reduction assembly, a stator and a rotor, wherein the vibration reduction assembly comprises a support, a sliding table and an elastic piece; the stator is fixedly connected with the sliding table; the rotor is in sliding connection with the base and is matched with the stator; wherein, electromagnetic force is generated between the stator and the rotor to push the rotor to move; when the rotor accelerates and decelerates, a reaction force is generated between the stator and the rotor to push the stator to move, the sliding table is driven to slide when the stator moves, and the elastic piece is driven to be stretched or compressed when the sliding table slides; when the elastic piece resets, the stator is driven to move and reset. The active vibration reduction linear motion module has the effects of actively reducing impact vibration on the base during acceleration and deceleration of the mover, improving the use precision of equipment and reducing the total weight of the equipment.
Description
Technical Field
The invention relates to the technical field of linear motors, in particular to an active vibration reduction linear motion module.
Background
The linear motor module is a transmission device which directly converts electric energy into linear motion mechanical energy without an intermediate conversion mechanism, and is widely applied to the mechanical industry due to the characteristics of simple structure, high positioning precision and high reaction speed.
The linear motor module in the prior art comprises a stator and a rotor, wherein the stator is locked and fixed on a bottom plate of the device, a coil is arranged in the rotor, and electromagnetic force is generated between the stator and the rotor after the coil is electrified, so that the rotor moves, and one side of the rotor is supported on the bottom plate of the device through a guide rail and a sliding block to perform reciprocating motion.
However, under the actual use conditions of heavy load, high acceleration and short stroke, the impact generated in the acceleration and deceleration process of the load can be conducted on the equipment through the connecting piece, so that the equipment vibrates, and the use precision of the equipment is reduced. In the prior art, weight is usually added to the device body passively to reduce vibration generated by the linear motor module during operation, but the device is overweight.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that when the linear motor module is used, impact generated by load acceleration and deceleration is conducted on equipment, equipment vibration is caused, and the use precision of the equipment is reduced, so as to provide the active vibration reduction linear motion module which can actively absorb the vibration of the linear motion module, avoid the overflow of the vibration, reduce the total weight of the equipment, and improve the running stability and the running efficiency of the equipment.
The invention provides an active vibration reduction linear motion module, which comprises:
A base;
the vibration reduction assembly comprises a support, a sliding table and an elastic piece, wherein the support is fixedly connected with the base, the sliding table is in sliding connection with the base, and two ends of the elastic piece are respectively connected with the support and the sliding table;
The stator is fixedly connected with the sliding table, and a magnet is arranged on the stator;
The rotor is in sliding connection with the base, is matched with the stator and is provided with a coil;
After the coil is electrified, electromagnetic force is generated between the stator and the rotor to push the rotor to move; when the rotor accelerates and decelerates, a reaction force is generated between the stator and the rotor to push the stator to move, the sliding table is driven to slide when the stator moves, and the elastic piece is driven to be stretched or compressed when the sliding table slides; when the elastic piece resets, the stator is driven to move and reset; the deformation direction of the elastic piece is parallel to the sliding direction of the rotor.
In one embodiment of the invention, the vibration reduction assembly further comprises a guide shaft, the length direction of the guide shaft is parallel to the sliding direction of the mover, the guide shaft is arranged on the support in a sliding penetrating mode, one end of the guide shaft is connected with the sliding table, and the elastic piece is sleeved on the outer side of the guide shaft.
In one embodiment of the invention, the vibration reduction assembly further comprises a damper, wherein the damper is connected with the base, and one end of the damper is connected with the sliding table.
In one embodiment of the invention, the vibration reduction assembly further comprises a weight, the weight being connected to the stator.
In one embodiment of the invention, the vibration reduction assembly further comprises a positioning pin shaft, pin holes are formed in the sliding table and the stator, and the positioning pin shaft is connected in the pin holes of the sliding table and the stator in a penetrating mode.
In one embodiment of the invention, the vibration reduction assembly further comprises a first sliding rail and a first sliding block, wherein the first sliding rail is fixedly connected with the base, the first sliding block slides in a matched manner with the first sliding rail, and the sliding table is fixedly connected with the first sliding block.
In one embodiment of the present invention, the controller further comprises a first encoder and a second encoder, wherein the first encoder and the second encoder are connected with the rotor, the first encoder is used for detecting the relative displacement between the rotor and the stator, and the second encoder is used for detecting the relative displacement between the rotor and the base.
In one embodiment of the invention, the device further comprises a second sliding rail and a second sliding block, wherein the second sliding rail is fixedly connected with the base, the second sliding block slides in a matched manner with the second sliding rail, and the rotor is fixedly connected with the second sliding block.
In one embodiment of the present invention, an anti-collision block is further included, the anti-collision block being disposed at both ends of the second slide rail.
In one embodiment of the present invention, the stator further comprises a protection plate disposed at both sides of the gap between the base and the stator.
Compared with the prior art, the technical scheme of the invention has the following advantages:
The active vibration reduction linear motion module comprises a base, a vibration reduction assembly, a stator and a rotor, wherein the vibration reduction assembly comprises a support, a sliding table and an elastic piece, the support is fixedly connected with the base, the sliding table is in sliding connection with the base, and two ends of the elastic piece are respectively connected with the support and the sliding table; the stator is fixedly connected with the sliding table, and a magnet is arranged on the stator; the rotor is in sliding connection with the base, the rotor is matched with the stator, and a coil is arranged on the rotor; after the coil is electrified, electromagnetic force is generated between the stator and the rotor to push the rotor to move; when the rotor accelerates and decelerates, a reaction force is generated between the stator and the rotor to push the stator to move, the sliding table is driven to slide when the stator moves, and the elastic piece is driven to be stretched or compressed when the sliding table slides; when the elastic piece resets, the stator is driven to move and reset; the deformation direction of the elastic piece is parallel to the sliding direction of the rotor. When the active vibration reduction linear motion module is used, the stator floats on the base along with the movement of the mover, and kinetic energy generated by reaction force between the mover and the stator is converted into elastic potential energy of the elastic piece, so that impact vibration caused to the base during acceleration and deceleration of the mover is actively reduced, and the use precision of equipment is improved; and compare in the vibration reduction measure of passive increase equipment weight, initiative vibration reduction rectilinear movement module can reduce the vibration reduction dependence to equipment weight when guaranteeing the same vibration reduction effect, the limit lightens equipment gross weight, improves equipment operation stationarity indirectly, directly promotes the operating efficiency of rectilinear movement module.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic diagram of an active vibration reduction linear motion module according to the present invention;
fig. 2 is a schematic structural diagram of a vibration reduction assembly in the active vibration reduction linear motion module shown in fig. 1.
Description of the specification reference numerals: 1. a base; 2. a vibration reduction assembly; 21. a support; 22. a sliding table; 23. an elastic member; 24. a guide shaft; 25. a damper; 26. balancing weight; 27. positioning pin shafts; 28. a first slide rail; 29. a first slider; 3. a stator; 4. a mover; 5. a controller; 51. a first encoder; 52. a second encoder; 6. a second slide rail; 7. a second slider; 8. an anti-collision block; 9. and (5) protecting the plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Referring to fig. 1 and 2, the invention discloses an active vibration reduction linear motion module, which comprises:
A base 1;
The vibration reduction assembly 2 comprises a support 21, a sliding table 22 and an elastic piece 23, wherein the support 21 is fixedly connected with the base 1, the sliding table 22 is in sliding connection with the base 1, and two ends of the elastic piece 23 are respectively connected with the support 21 and the sliding table 22;
The stator 3, the stator 3 is fixedly connected with the sliding table 22, and a magnet is arranged on the stator 3;
the rotor 4 is in sliding connection with the base 1, the rotor 4 is matched with the stator 3, and a coil is arranged on the rotor 4;
After the coil is electrified, electromagnetic force is generated between the stator 3 and the rotor 4 to push the rotor 4 to move; when the rotor 4 accelerates and decelerates, a reaction force is generated between the stator 3 and the rotor 4 to push the stator 3 to move, the sliding table 22 is driven to slide when the stator 3 moves, and the elastic piece 23 is driven to be stretched or compressed when the sliding table 22 slides; when the elastic piece 23 resets, the stator 3 is driven to move and reset; the deformation direction of the elastic member 23 is parallel to the sliding direction of the mover 4.
When the active vibration reduction linear motion module is used, the stator 3 floats on the base 1 along with the movement of the rotor 4, and kinetic energy generated by reaction force between the rotor 4 and the stator 3 is converted into elastic potential energy of the elastic piece 23, so that impact vibration caused to the base 1 during acceleration and deceleration of the rotor 4 is actively reduced, and the use precision of equipment is improved; compared with the vibration reduction measure of passively increasing the weight of equipment, the active vibration reduction linear motion module can reduce the vibration reduction dependence on the weight of the equipment while guaranteeing the same vibration reduction effect, reduces the total weight of the equipment, indirectly improves the running stability of the equipment and directly improves the running efficiency of the linear motion module.
In this embodiment, preferably, the active vibration reduction linear motion module may be a coreless linear motor, that is, the stator 3 has a U-shaped structure, and magnets are disposed on both upper and lower sides of the stator 3; the coil on the rotor 4 stretches into the space between the magnets on the upper side and the lower side of the stator 3, so that electromagnetic force is generated between the stator 3 and the rotor 4 after the coil is electrified.
In this embodiment, preferably, the elastic member 23 is a spring.
In this embodiment, preferably, the vibration reduction assembly 2 further includes a guide shaft 24, the length direction of the guide shaft 24 is parallel to the sliding direction of the mover 4, the guide shaft 24 is slidably disposed on the support 21, one end of the guide shaft 24 is connected to the sliding table 22, and the elastic member 23 is sleeved outside the guide shaft 24.
By arranging the guide shaft 24, when the stator 3 drives the sliding table 22 to slide, the guide shaft 24 slides on the support 21 in a straight line, so that the sliding stability of the sliding table 22 is ensured, the angle change of the elastic piece 23 when being stretched or compressed is avoided, and the reliability of the straight line sliding of the stator 3 is improved.
In this embodiment, preferably, the vibration reducing assembly 2 further includes a damper 25, the damper 25 is connected to the base 1, and one end of the damper 25 is connected to the slide table 22.
By arranging the damper 25, the damper 25 absorbs the kinetic energy of the linear movement of the sliding table 22, so that the vibration reducing effect of the active vibration reducing linear movement module is further improved, and the vibration overflow is avoided; in particular, when the mover 4 moves in a long stroke, the damper 25 can perform a better energy absorbing function.
In this embodiment, the vibration reducing assembly 2 further includes a weight 26, and the weight 26 is preferably connected to the stator 3.
Through setting up balancing weight 26, balancing weight 26 is connected with stator 3, improves the weight of stator 3 to the stroke that control stator 3 removed makes stator 3 be in the reciprocal state of short stroke, further improves the energy-absorbing effect of falling vibration, ensures the operational reliability of initiative rectilinear movement module of falling vibration.
In this embodiment, preferably, the vibration reducing assembly 2 further includes a positioning pin 27, and the sliding table 22 and the stator 3 are provided with pin holes, and the positioning pin 27 is penetratingly connected in the pin holes of the sliding table 22 and the stator 3.
By arranging the positioning pin shafts 27, the connection precision of the sliding table 22 and the stator 3 is improved, the stator 3 and the sliding table 22 can synchronously move with high precision, the situation that the precision of the active vibration reduction linear motion module is reduced due to the fact that the stator 3 floats is avoided, and the reliability of the active vibration reduction linear motion module is improved.
In this embodiment, preferably, the vibration reduction assembly 2 further includes a first sliding rail 28 and a first sliding block 29, the first sliding rail 28 is fixedly connected with the base 1, the first sliding block 29 is matched with the first sliding rail 28 to slide, and the sliding table 22 is fixedly connected with the first sliding block 29.
By arranging the first slide rail 28 and the first slide block 29, the moving stability of the sliding table 22 is improved, preferably, the first slide rail 28 can be a wide-surface track, and the moving reliability of the sliding table 22 is further improved.
In this embodiment, preferably, the active vibration reduction linear motion module further includes a controller 5, the controller 5 includes a first encoder 51 and a second encoder 52, the first encoder 51 and the second encoder 52 are both connected to the mover 4, the first encoder 51 is used for detecting a relative displacement between the mover 4 and the stator 3, and the second encoder 52 is used for detecting a relative displacement between the mover 4 and the base 1.
By arranging the first encoder 51 and the second encoder 52, the first encoder 51 detects the relative displacement between the rotor 4 and the stator 3, so that the motor current control is realized, the analysis compensation is carried out on the electric angle change when the stator 3 floats, and the control precision is improved; the second encoder 52 detects the relative displacement between the rotor 4 and the base 1, so that position control is realized, and when the stator 3 floats, the position of the rotor 4 relative to the base 1 is accurately controlled, so that the operation reliability of the active vibration reduction linear motion module is ensured.
In this embodiment, preferably, the active vibration reduction linear motion module further includes a second sliding rail 6 and a second sliding block 7, the second sliding rail 6 is fixedly connected with the base 1, the second sliding block 7 is matched with the second sliding rail 6 to slide, and the mover 4 is fixedly connected with the second sliding block 7.
Through setting up second slide rail 6 and second slider 7, second slide rail 6 and second slider 7 are used for supporting the steady slip of active cell 4 for base 1, improve the precision and the stationarity of active cell 4 rectilinear movement, strengthen the reliability of initiative damping rectilinear movement module.
In the present embodiment, it is preferable to further include an impact block 8, the impact block 8 being provided at both ends of the second slide rail 6.
By arranging the anti-collision block 8, the anti-collision block 8 protects the situation that the mover 4 moves to the edge position of the second sliding rail 6, and prevents the mover 4 from sliding out of the second sliding rail 6; and preferably, the anti-collision block 8 is made of polyurethane material, and the elasticity of the anti-collision block is utilized to counteract the impact kinetic energy of the rotor 4 during collision, so that the protection strength is further improved.
In this embodiment, it is preferable to further include a shielding plate 9, and the shielding plate 9 is disposed at both sides of the gap between the base 1 and the stator 3.
By arranging the protection plate 9, dust is prevented from flowing in from the gap between the base 1 and the stator 3, the dust interference operation precision is reduced, and the reliability of the active vibration reduction linear motion module is improved.
The implementation principle of the embodiment is as follows: when the active vibration reduction linear motion module is used, electromagnetic force generated between the stator 3 and the rotor 4 pushes the rotor 4 to move; when the rotor 4 moves in acceleration and deceleration, a reaction force is generated between the stator 3 and the rotor 4, the reaction force can push the stator 3 to move in a retreating way, and when the stator 3 moves, the elastic piece 23 is driven to be stretched or compressed through the sliding table 22, and the damper 25 at one end of the stator 3 weakens and absorbs energy of kinetic energy generated by the reaction force; subsequently, the elastic member 23 provides a restoring elastic force, and the restoring elastic force drives the stator 3 to move for restoring. The active vibration reduction linear motion module reduces impact vibration to the base 1 during acceleration and deceleration of the rotor 4 by arranging the vibration reduction assembly 2, and improves moving precision.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. An initiative damping rectilinear movement module, characterized by comprising:
A base;
the vibration reduction assembly comprises a support, a sliding table and an elastic piece, wherein the support is fixedly connected with the base, the sliding table is in sliding connection with the base, and two ends of the elastic piece are respectively connected with the support and the sliding table;
The stator is fixedly connected with the sliding table, and a magnet is arranged on the stator;
The rotor is in sliding connection with the base, is matched with the stator and is provided with a coil;
After the coil is electrified, electromagnetic force is generated between the stator and the rotor to push the rotor to move; when the rotor accelerates and decelerates, a reaction force is generated between the stator and the rotor to push the stator to move, the sliding table is driven to slide when the stator moves, and the elastic piece is driven to be stretched or compressed when the sliding table slides; when the elastic piece resets, the stator is driven to move and reset; the deformation direction of the elastic piece is parallel to the sliding direction of the rotor.
2. The active vibration reduction linear motion module of claim 1, wherein: the vibration reduction assembly further comprises a guide shaft, the length direction of the guide shaft is parallel to the sliding direction of the rotor, the guide shaft is arranged on the support in a sliding penetrating mode, one end of the guide shaft is connected with the sliding table, and the elastic piece is sleeved on the outer side of the guide shaft.
3. The active vibration reduction linear motion module of claim 1, wherein: the vibration reduction assembly further comprises a damper, the damper is connected with the base, and one end of the damper is connected with the sliding table.
4. The active vibration reduction linear motion module of claim 1, wherein: the vibration reduction assembly further comprises a balancing weight, and the balancing weight is connected with the stator.
5. The active vibration reduction linear motion module of claim 1, wherein: the vibration reduction assembly further comprises a positioning pin shaft, pin holes are formed in the sliding table and the stator, and the positioning pin shaft is connected in the pin holes of the sliding table and the stator in a penetrating mode.
6. The active vibration reduction linear motion module of claim 1, wherein: the vibration reduction assembly further comprises a first sliding rail and a first sliding block, the first sliding rail is fixedly connected with the base, the first sliding block is matched with the first sliding rail to slide, and the sliding table is fixedly connected with the first sliding block.
7. The active vibration reduction linear motion module of claim 1, wherein: the controller comprises a first encoder and a second encoder, the first encoder and the second encoder are both connected with the rotor, the first encoder is used for detecting relative displacement between the rotor and the stator, and the second encoder is used for detecting relative displacement between the rotor and the base.
8. The active vibration reduction linear motion module of claim 1, wherein: the movable element is fixedly connected with the base, the second sliding rail is matched with the base to slide, and the movable element is fixedly connected with the second sliding rail.
9. The active vibration reduction linear motion module of claim 8, wherein: the anti-collision device further comprises anti-collision blocks, wherein the anti-collision blocks are arranged at two ends of the second sliding rail.
10. The active vibration reduction linear motion module of claim 1, wherein: the stator assembly comprises a base, a stator, a protection plate, a motor and a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410137983.7A CN117997032A (en) | 2024-01-31 | 2024-01-31 | Initiative damping rectilinear motion module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410137983.7A CN117997032A (en) | 2024-01-31 | 2024-01-31 | Initiative damping rectilinear motion module |
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| Publication Number | Publication Date |
|---|---|
| CN117997032A true CN117997032A (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410137983.7A Pending CN117997032A (en) | 2024-01-31 | 2024-01-31 | Initiative damping rectilinear motion module |
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| CN (1) | CN117997032A (en) |
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- 2024-01-31 CN CN202410137983.7A patent/CN117997032A/en active Pending
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