CN208764223U - A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid - Google Patents
A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid Download PDFInfo
- Publication number
- CN208764223U CN208764223U CN201821441241.XU CN201821441241U CN208764223U CN 208764223 U CN208764223 U CN 208764223U CN 201821441241 U CN201821441241 U CN 201821441241U CN 208764223 U CN208764223 U CN 208764223U
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- CN
- China
- Prior art keywords
- knife rest
- cutter
- connecting rod
- magnetorheological fluid
- vibration suppression
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Abstract
The utility model discloses a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid, including knife rest, the top of the knife rest is equipped with cylinder by bolt, cylinder body has been screwed at the top of cylinder, the outside of cylinder body is installed with coil, cylinder body has been internally embedded piston plate, throttle orifice is offered on piston plate, connecting rod has been bolted at the top of piston plate, the other end of connecting rod has been bolted cutter, one end hinge of cutter is connected with connecting rod, pass through piston plate, controller, acceleration induction device, cylinder, connecting rod, the isostructural setting of cutter, to magnet exciting coil input current, to change the rigidity and damping of magnetic rheological liquid damper, avoid the accumulation of resonance energy, destroy the condition that flutter is formed, to reach cutting-vibration inhibition, and the angle of cutter is adjusted by adjusting rod, workpiece is carried out Cutter can easily be adjusted when processing.
Description
Technical field
The utility model relates to vibration suppression knife rest technical field more particularly to a kind of variable damping variation rigidities based on magnetorheological fluid
Vibration suppression knife rest.
Background technique
Currently, the control strategy to Metal Cutting Chatter mainly has two major classes: one kind is cutting parameter adjusting method, that is, is passed through
Selecting or adjust reasonable cutting parameter makes machine tool system be in stable region；Second class is vibration control method, that is, passes through vibration
Control methods avoid flutter come the performance for changing system and amendment boundary of stability.
Fierce self-excited vibration can usually occur in metal cutting process, between cutter and workpiece, i.e., it is so-called
Flutter, this will lead to the reduction of Precision Machining efficiency and machined surface quality decline or even defective work piece and cutter, after causing seriously
Fruit, therefore, it is necessary to quickly and effectively be inhibited to processing flutter, to improve tool surfaces processing quality, and current knife
It is inconvenient when adjusting to have angle, is unsatisfactory for the use demand of personnel.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, is proposed a kind of based on magnetorheological fluid
Variable damping variation rigidity vibration suppression knife rest.
The purpose of this utility model can be realized by the following technical scheme:
A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid, including knife rest pass through spiral shell at the top of the knife rest
Bolt is equipped with cylinder, and cylinder body has been screwed at the top of cylinder, and the outside of cylinder body is installed with coil, and cylinder body is internally embedded
There is piston plate, throttle orifice is offered on piston plate, connecting rod has been bolted at the top of piston plate, the other end of connecting rod passes through
Bolt is fixed with cutter, and one end hinge of cutter is connected with connecting rod, and the top of cutter is fixed with supporting block by screw, support
The side of block is fixed with sliding rail by rivet, and sliding rail slidably connects slide bar, and the inside of slide bar is successively arranged adjusting from top to bottom
Bar and slide bar.
Preferably, the side of the knife rest is equipped with controller by screw, and controller is connect with coil electric, the gas
Cylinder and piston plate are electrically connected.
Preferably, the inside of the cylinder body is placed with magnetorheological fluid, and end cap, end cap have been screwed at the top of cylinder body
On offer aperture, the connecting rod passes through the inside of aperture.
Preferably, one end of the cutter is equipped with acceleration induction device by screw, and the side of the knife rest offers
Groove, acceleration induction device are embedded in the inside of groove, and acceleration induction device and controller are electrically connected.
Preferably, it is welded with fixed link at the top of the cutter, threaded hole, the portion of the adjusting rod are offered in fixed link
Divide the inside for being threadedly secured in threaded hole.
Preferably, circular hole is offered on the slide bar, the inner wall of circular hole is installed with ball, and the part of the adjusting rod opens up
There is screw thread sliding slot, screw thread sliding slot is slidably connected with ball, and movable span is offered on slide bar, and the connecting rod is embedded in movable span
It is internal.
The beneficial effects of the utility model are:
1, in the utility model by piston plate, controller, acceleration induction device, cylinder, connecting rod, cutter is isostructural sets
It sets, to magnet exciting coil input current, for magnetorheological fluid under the action of externally-applied magnetic field, as magnetic field strength applies, magnetorheological fluid can
To become solid-state by liquid within the time of Millisecond, piston panel vibration is hindered, removes magnetic field, magnetorheological fluid becomes again from solid-state again
Liquid makes the vibration of cutter avoid avoiding resonance energy with the intrinsic frequency of cutting to change the intrinsic frequency of machining
The accumulation of amount destroys the condition that flutter is formed, to achieve the purpose that cutting-vibration inhibits.
2, by slide bar, adjusting rod, screw thread sliding slot, the isostructural setting of connecting rod in the utility model, personnel can pass through
Adjusting rod adjusts the angle of cutter, and cutter can easily be adjusted when processing to workpiece, meet the use need of personnel
It asks.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid Facad structure
Schematic diagram；
Fig. 2 be the utility model proposes piston plate top view.
In figure: 1 knife rest, 2 coils, 3 piston plates, 4 slide bars, 5 connecting rods, 6 adjusting rods, 7 liquid storage cylinders, 8 connecting rods, 9 supporting blocks,
10 cutters, 11 acceleration induction devices, 12 controllers, 13 end caps, 14 cylinders, 15 throttle orifices.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid, including knife rest 1, the knife rest 1
Top cylinder 14 is equipped with by bolt, the side of knife rest 1 is equipped with controller 12, controller 12 and coil 2 by screw
Electrical connection, cylinder 14 and piston plate 3 are electrically connected, and the top of cylinder 14 has been screwed cylinder body 7, the inside of cylinder body 7
It is placed with magnetorheological fluid, the top of cylinder body 7 has been screwed end cap 13, and aperture is offered on end cap 13, and connecting rod 5 passes through
The inside of aperture, the outside of cylinder body 7 are installed with coil 2, and cylinder body 7 has been internally embedded piston plate 3, has passed through piston plate 3, controller
12, acceleration induction device 11, cylinder 14, connecting rod 8, the isostructural setting of cutter 10 input suitable electric current to magnet exciting coil, even
The continuous rigidity and damping for changing magnetic rheological liquid damper also changes cutting and adds to change the rigidity and damping of cutting system
The intrinsic frequency of work system makes the vibration of cutter 10 avoid the intrinsic frequency with cutting system, destroys the condition of flutter formation,
To achieve the purpose that cutting-vibration inhibits, throttle orifice 15 is offered on piston plate 3, the top of piston plate 3 is bolted
There is connecting rod 8, the other end of connecting rod 8 has been bolted cutter 10, and the top of cutter 10 is welded with fixed link, opens in fixed link
Equipped with threaded hole, the partial threads of adjusting rod 6 are fixed on the inside of threaded hole, and one end of cutter 10 is equipped with acceleration by screw
Inductor 11 is spent, the side of knife rest 1 opens up fluted, and acceleration induction device 11 is embedded in the inside of groove, acceleration induction device
11 are electrically connected with controller 12, and one end hinge of cutter 10 is connected with connecting rod 5, and the top of cutter 10 is fixed with by screw
The side of supporting block 9, supporting block 9 is fixed with sliding rail by rivet, and sliding rail slidably connects slide bar 4, offers circle on slide bar 4
Hole, the inner wall of circular hole are installed with ball, and the part of adjusting rod 6 offers screw thread sliding slot, and screw thread sliding slot is slidably connected with ball, sliding
Movable span is offered on bar 4, by slide bar 4, adjusting rod 6, screw thread sliding slot, the isostructural setting of connecting rod 5, personnel can pass through tune
Pole 6 adjusts the angle of cutter 10, and cutter 10 can easily be adjusted when processing to workpiece, meet the use of personnel
Demand, connecting rod 5 are embedded in the inside of movable span, and the inside of slide bar 4 is successively arranged adjusting rod 6 and slide bar 4 from top to bottom.
Embodiment one connects working power, and controller 12 works, the model HY2N-32MR-10AD of controller 12, magnetic
Under the action of externally-applied magnetic field, viscosity and rheological characteristic can change rheology liquid, its shear yield strength and magnetic field are strong at this time
Degree has stable corresponding relationship, can adjust the dynamic characteristic of vibration suppression cutter 10 rapidly by controlling magnetic field strength, be mounted on
The acceleration induction device 11 of cutter 10 can be used as the perceptron of system, the model DL24100 of acceleration induction device 11, can be with
The Vibration Condition of cutter 10 is acquired in real time, and vibration signal is transferred to the collection analysis module inside controller 12
On, cutting state is fed back to controller 12 by calculating analysis, control signal is then exported to excitation electricity by controller 12 again
Stream is controlled, and to the electric current that magnet exciting coil 2 inputs, the rigidity of magnetorheological fluid is damped under the action of externally-applied magnetic field, is connected
Continue reversible variation, i.e., as magnetic field strength applies, magnetorheological fluid can become solid-state by liquid within the time of Millisecond, resistance
Hinder piston plate 3 to vibrate, remove magnetic field, magnetorheological fluid becomes liquid again from solid-state again, to change the intrinsic frequency of machining, makes
The intrinsic frequency with cutting is avoided in the vibration of cutter 10, avoids the accumulation of resonance energy, destroys the condition that flutter is formed, thus
Achieve the purpose that cutting-vibration inhibits.
Embodiment two, when adjusting the angle of cutter head, personnel can be rotated adjusting rod 6, rotate clockwise, and adjusting rod 6 is to the left
It is mobile, partially goed deep into the inside of threaded hole by screw thread, partially in the internal slide of circular hole, meanwhile, when adjusting rod 6 is mobile, make
Slide bar 4 slides on adjusting rod 6, and one end of slide bar 4 is installed with steel ball, can slide on the slide rail, and sliding rail is skewed, slide bar 4
When sliding to the left, height rises, and drives connecting rod 5 to be rotated up, to change the angle of cutter head, similarly, rotates counterclockwise tune
When pole 6, connecting rod 5 is pressed downward slide bar 4 by Slideslip to the right, and the both ends of sliding rail are equipped with limited block, it is ensured that slide bar 4 will not take off
Inside from sliding rail.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid, including knife rest (1), which is characterized in that the knife rest
(1) top is equipped with cylinder (14) by bolt, has been screwed at the top of cylinder (14) cylinder body (7), cylinder body (7)
Outside is installed with coil (2), and being internally embedded piston plate (3) for cylinder body (7) offers throttle orifice (15) on piston plate (3), living
It has been bolted at the top of seben (3) connecting rod (8), the other end of connecting rod (8) has been bolted cutter (10), cutter
(10) one end hinge is connected with connecting rod (5), and the top of cutter (10) is fixed with supporting block (9) by screw, supporting block (9)
Side sliding rail is fixed with by rivet, sliding rail slidably connects slide bar (4), and the inside of slide bar (4) is successively arranged from top to bottom
Adjusting rod (6) and slide bar (4).
2. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid according to claim 1, which is characterized in that institute
The side for stating knife rest (1) is equipped with controller (12) by screw, and controller (12) and coil (2) are electrically connected, the cylinder
(14) it is electrically connected with piston plate (3).
3. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid according to claim 1, which is characterized in that institute
The inside for stating cylinder body (7) is placed with magnetorheological fluid, has been screwed at the top of cylinder body (7) end cap (13), on end cap (13)
Aperture is offered, the connecting rod (5) passes through the inside of aperture.
4. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid according to claim 1, which is characterized in that institute
The one end for stating cutter (10) is equipped with acceleration induction device (11) by screw, and the side of the knife rest (1) opens up fluted, is added
Speed sensor (11) is embedded in the inside of groove, and acceleration induction device (11) and controller (12) are electrically connected.
5. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid according to claim 1, which is characterized in that institute
It states and is welded with fixed link at the top of cutter (10), threaded hole is offered in fixed link, the partial threads of the adjusting rod (6) are fixed
In the inside of threaded hole.
6. a kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid according to claim 1, which is characterized in that institute
It states and offers circular hole on slide bar (4), the inner wall of circular hole is installed with ball, and the part of the adjusting rod (6) offers screw thread sliding slot,
Screw thread sliding slot is slidably connected with ball, and movable span is offered on slide bar (4), and the connecting rod (5) is embedded in the inside of movable span.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441241.XU CN208764223U (en) | 2018-09-04 | 2018-09-04 | A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441241.XU CN208764223U (en) | 2018-09-04 | 2018-09-04 | A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764223U true CN208764223U (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821441241.XU Expired - Fee Related CN208764223U (en) | 2018-09-04 | 2018-09-04 | A kind of variable damping variation rigidity vibration suppression knife rest based on magnetorheological fluid |
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| CN (1) | CN208764223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007538A (en) * | 2019-12-24 | 2020-04-14 | 华北水利水电大学 | Emergency monitoring equipment for global navigation satellite system |
-
2018
- 2018-09-04 CN CN201821441241.XU patent/CN208764223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007538A (en) * | 2019-12-24 | 2020-04-14 | 华北水利水电大学 | Emergency monitoring equipment for global navigation satellite system |
| CN111007538B (en) * | 2019-12-24 | 2023-06-09 | 华北水利水电大学 | Emergency monitoring equipment for global navigation satellite system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20190904 |