CN208437733U - A kind of horizontal assembly type vibration damping milling cutter - Google Patents
A kind of horizontal assembly type vibration damping milling cutter Download PDFInfo
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- CN208437733U CN208437733U CN201821057805.XU CN201821057805U CN208437733U CN 208437733 U CN208437733 U CN 208437733U CN 201821057805 U CN201821057805 U CN 201821057805U CN 208437733 U CN208437733 U CN 208437733U
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Abstract
The utility model discloses a kind of horizontal assembly type vibration damping milling cutters, including cutterhead, vibration-proof structure and knife handle；The vibration-proof structure includes three-decker, is successively damping layer, carbon fibre composite layer and hard alloy layer from inside to outside；One end of vibration-proof structure is extend into the cavity of knife handle, and the other end is extend into the cavity of facing cutter, and vibration-proof structure is detachably connected with knife handle, facing cutter, forms assembled milling cutter；The vibration-proof structure of the utility model passes through the superposition between different materials, while improving the rigidity and damping of knife bar, has the function that vibrationproof and vibration suppression.
Description
Technical field
The utility model relates to Milling Process fields, and in particular to a kind of horizontal assembly type vibration damping milling cutter.
Background technique
In deep hole processing or cavity part, it is often necessary to use cantilever cutter.However, knife bar overhanging major diameter is bigger
When, cutting-vibration is easily caused, the raising of processing efficiency is influenced, or even reduces processing stability and surface quality.
For lathe tool, Patent No. CN202212591U utility model patent successively sets vibrationproof layer, damping layer, basal layer
In knife handle enclosure interior, and vibrationproof layer is located at the connecting pin of knife handle shell and cutter head, achievees the purpose that reduce vibration；However vibrationproof
Layer material dosage is few, and inhibition of vibration is limited, and the mode that multiple material horizontal direction is sequentially distributed easily leads to Mass Distribution not
Uniformly, so not being suitable for the vibration damping of rotary cutter.The utility model patent of Patent No. CN206153598U is in knife bar outer layer
Provided with noiseless alloy layer, it can effectively inhibit the vibration generated in process；If being added in base layer and noiseless alloy interlayer
Damping material layer, effectiveness in vibration suppression can be more significant.Patent No. CN205599935U utility model patent on knife bar by being arranged
Damping block has the function that canceling mechanical oscillation energy.But it is added by way of damping block carries out vibration damping simultaneously in knife bar side
It is not suitable for rotating class cutter, this is because the damping block of addition will affect the dynamic balancing of cutter entirety.
For boring cutter, Patent No. CN102275086A utility model patent realizes boring using particle damped vibration attenuation system
The vibration damping of knife；Patent No. CN206065451U utility model patent, which devises, a kind of based on particle damping and magneto-rheological combined to be subtracted
The boring cutter of vibration.Above-mentioned two patent is all that the collision damped by particle and friction consumption vibrational energy are similarly transported between particle
The dynamic dynamic balancing that rotary cutter can be seriously affected with collision.
For vertical milling cutter, Patent No. CN206588401U utility model patent uses the addition inside knife bar to adjust dress
Set, elastic element and damper regulation mechanism etc. realize that the damping of knife bar is adjustable, to reach the requirement of control vibration.The patent
Vibration is controlled by increasing the damping of knife bar, but the rigidity of knife bar reduces because of the borehole of inner cavity, reduces knife bar vibration suppression
Ability.
Compared to vertical milling, in horizontal milling, influence of the overhanging draw ratio and quality of knife bar to processing performance is more
Significantly.When knife bar overhanging major diameter bigger (draw ratio is greater than 4), causes rigid phase to reduction, be also easy to produce milling parameter, influence to add
Working medium amount and processing efficiency.In vertical milling, influence of the quality to processing of knife bar can not be considered, however, in horizontal milling
When cutting, when knife bar high speed rotation, the biggish quality of knife bar easily causes biggish centrifugal force and gyroscopic couple, increases exciting force
Amplitude deteriorates milling parameter.
Utility model content
The utility model is caused by solving because of horizontal processing method and milling arbor draw ratio big (draw ratio is more than or equal to 7)
The problem of vibration resistance is poor, processing efficiency is difficult to improve proposes a kind of assembled damping type milling cutter.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of horizontal assembly type vibration damping milling cutter, including cutterhead, vibration-proof structure and knife handle；The vibration-proof structure includes three layers
Structure is successively damping layer, carbon fibre composite layer and hard alloy layer from inside to outside；One end of damper mechanism extend into knife
In the cavity of handle, the other end is extend into the cavity of facing cutter, and vibration-proof structure is detachably connected with knife handle, facing cutter, forms dress
With formula milling cutter.
Further, the hard alloy layer is a hollow cylindrical structure, and one end closing, the other end is open,
Form an inner cavity；The hard alloy layer is used to improve the rigidity of knife bar, to improve the resistance to shock of milling cutter.
Further, the carbon fibre composite layer is filled using epoxy rubber stick is viscous in the inner cavity of hard alloy layer
It is interior.Due to carbon fibre composite elasticity modulus with higher and lesser density, the rigidity of milling arbor not only can be improved, but also
It can reduce its whole quality.
Further, the damping layer uses foam aluminium bar, and the foam aluminium bar equally uses epoxy rubber stick
It sticks intracavitary in carbon fibre composite layer；And the damping and amortization of foamed aluminium is preferable, and the vibrational energy in milling process can be absorbed
Amount, plays the role of vibration damping.
Further, it is keyed between the vibration-proof structure and knife handle by bolt peace, the bolt is for limiting
The axial movement of vibration-proof structure processed；The flat key is used to limit the circumferential movement of vibration-proof structure.
Further, the outer ring of the damper mechanism is equipped with class flange, sets on the circumferencial direction of the class flange
There is threaded hole；It also is provided with threaded hole in the end of knife handle and the damper mechanism cooperation, two threaded holes is bolted, is used for
Limit the axial movement of vibration-proof structure；And keyway is additionally provided on the circumferencial direction of class flange and knife handle end, the flat key
It is mounted in the keyway, for limiting the circumferential movement of vibration-proof structure.
Further, the knife handle, choice of material are the structural alloy steel of high elastic modulus.In milling tool, institute
The knife handle stated is clamped on machine tool chief axis with one end of blind rivet, and the other end is connected by bolt, flat key and vibration-proof structure.
Further, it is connected between the vibration-proof structure and facing cutter also by the flat key being distributed along its circumferencial direction.
Further, the thickness ratio of the damping layer, carbon fibre composite layer and hard alloy layer is 1.5:1:
1.5.Above-mentioned trilaminate material thickness is distributed according to the above ratio, not only can guarantee knife bar entirety damping capacity and good rigidity, but also
It can the weight appropriate that knife bar be reduced.
Further, the ratio that the damping layer and carbon fibre composite layer account for damper mechanism overall length is all 0.7, in this way
Setting can achieve the optimal of damping layer and layer of carbon fiber material volume, guarantee the damping and amortization and loss of weight needs of knife bar.And
One end that vibration-proof structure can be made to connect with cutterhead is cemented carbide material, not only can ensure that the rigidity of connection relationship, and energy
Play the role of inhibiting vibration.
The utility model has the beneficial effects that
1. cutter bar of milling cutter is designed to assembled by the utility model, by the knife handle and intermediate vibration-proof structure part structure of rear end
At to provide structure basis for Vibration Absorption Designing.And a shank portion hard alloy is not needed, there is good economy
Property.
2. the utility model is when assembling knife handle and vibration-proof structure, to prevent vibration-proof structure from the axial direction of opposite knife handle occurs
With circumferential movement, the connection type of a type flange is devised, the transmitting of constraint and the torque of freedom degree is realized.
3. the vibration-proof structure of the utility model passes through the superposition between different materials, the rigidity and resistance of knife bar are not only increased
Buddhist nun has the function that vibrationproof and vibration suppression, and reduces the weight of knife bar.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the schematic perspective view of horizontal assembly type vibration damping milling cutter；
Fig. 2 is the explosion diagram of Fig. 1；
Fig. 3 is the structural schematic diagram of knife handle；
Fig. 4 is the structural schematic diagram of vibration-proof structure；
Fig. 5 is the cross-sectional view of vibration-proof structure；
Fig. 6 is the structural schematic diagram of flat key；
In figure: 1 knife handle, 2 fastening screws, 3 vibration-proof structures, 4 facing cutters, 5 flat keys, 6 blind rivets, 7 damping layers, 8 class flanges, 9
Hard alloy layer, 10 cyclic structures, 11 flat key fastening screws, 12 carbon fibre composite layers；13 knife handle inner cavities, 14 flat key slots,
15 threaded holes.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the utility model, only indicate and attached drawing
The upper and lower, left and right direction of itself is consistent, not to structure rise restriction effect, it is only for convenient for description the utility model and
Simplify description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.
As background technique is introduced, horizontal cutter bar of milling cutter causes rigid phase to subtracting because cantilever is too long in the prior art
It is small；And the milling cutter revolving speed with higher in processing, cause to generate violent flutter when milling cutter and workpiece continuous contact, seriously
Influence processing efficiency and processing quality；In addition, the quality of horizontal milling cutter has large effect to milling stability.In order to solve such as
On technical problem, present applicant proposes a kind of horizontal assembly type vibration damping milling cutters.
Explanation of nouns part: the utility model primarily directed to the big milling cutter of horizontal processing method and milling arbor draw ratio into
Capable improvement generally refers to the milling cutter that draw ratio is more than or equal to 7.
" class flange " described in the utility model refers to the structure similar to ring flange.
Hard alloy layer elasticity modulus described in the utility model requires to be more than or equal to 600Gpa.
In a kind of typical embodiment of the application, as shown in Figure 1, a kind of horizontal assembly type vibration damping milling cutter, main to wrap
Include knife handle 1, vibration-proof structure 3, facing cutter 4 and screw and flat key for connecting between component；Connection between each component is closed
System, concrete form are as shown in Figure 2；
As shown in figure 3, one end of the knife handle 1 is equipped with blind rivet 6, in milling, blind rivet 6 is clamped on machine tool chief axis, knife
The other end of handle 1 is equipped with a knife handle inner cavity 13, and the knife handle inner cavity 13 and vibration-proof structure are cooperatively connected.
As shown in figure 4, the vibration-proof structure rear end is inserted into knife handle lumen orifice (φ 40mm), class flange 8 thereon
Structure is fastened on the threaded hole on knife handle by 4 fastening screws 2, and constraint vibration-proof structure is axially moved；And the week of vibration-proof structure
It is limited to movement by two flat key blocks 5 (Fig. 6).
As shown in figure 5, vibration-proof structure is made of trilaminate material, respectively hard alloy layer 9, carbon fiber are compound from outside to inside
Material layer 12 and damping layer 7.
Hard alloy layer described in hard alloy layer is used to improve the rigidity of knife bar, to improve the vibration resistance of milling cutter
Can, it is a hollow cylindrical structure, one end closing, the other end is open, forms an inner cavity；Material is hard alloy,
Elasticity modulus with higher, plays the role of antivibration.
The outer ring of hard alloy layer is equipped with class flange, and threaded hole is equipped on the circumferencial direction of the class flange；Institute
The end for knife handle and the damper mechanism cooperation stated also is provided with threaded hole, and screw connects two threaded holes, for limiting vibration-proof structure
Axial movement；And keyway is additionally provided on the circumferencial direction of class flange and knife handle end, the flat key is mounted on the keyway
It is interior, for limiting the circumferential movement of vibration-proof structure.
Above-mentioned class flange is formed with hard alloy layer using integrally formed mode, the material of material and hard alloy layer
It is identical.
It is additionally provided with a loop structure 10 in the outer surface of the hard alloy layer, key is equipped in the cyclic structure 10
Slot is detachably connected for realizing with facing cutter 4.
Carbon fibre composite layer 12 is embedded in hard alloy layer inner cavity using epoxy rubber stick, and material is carbon fiber
Composite material is tieed up, there is relatively high elasticity modulus and lesser density, antivibration can be played the role of, while can reduce again
The weight of knife bar.
Damping layer 7 uses foam aluminium rod structure, is inserted in the interior intracavitary of carbon fiber composite structure, plays the role of absorbing.
It is further preferred that on thickness requirement, the damping layer, carbon fibre composite layer and hard alloy layer
Thickness ratio is 1.5:1:1.5.Above-mentioned trilaminate material thickness is distributed according to the above ratio, both can guarantee the damping capacity of knife bar entirety with
Good rigidity, and can the weight appropriate that knife bar be reduced；
If hard alloy layer is blocked up, cause carbon fibre composite layer or damping layer excessively thin, damping capacity reduces, and knife
The weight of bar increases；
If hard alloy layer is excessively thin, the rigidity of knife bar cannot guarantee, the ability of vibration is inhibited to reduce；
If carbon fibre composite thickness spends thickness, hard alloy layer or damping layer are thinning, the rigidity of knife bar entirety or
Damping and amortization reduces, and influences the ability of vibration suppression or absorbing；
If carbon fibre composite thickness is spent thin, hard alloy layer or damping layer are blocked up, although the rigidity of knife bar or
Damping and amortization enhancing, but the weight of knife bar increases, and centrifugal force becomes larger, and exciting force increases, and cost of manufacture increases；
Selection carbon fibre composite layer accounts for the 2/3 of damping layer and carbon fibre composite thickness degree.It is rigid meeting knife bar
Property and damping and amortization under conditions of, select the carbon fibre material that elasticity modulus is high, density is small, not only can guarantee the rigidity of knife bar, but also energy
Reduce overall weight, and better economy.
If damping layer is blocked up, hard alloy layer or carbon fibre composite layer are thinning, are unable to satisfy the rigidity of knife bar
It is required that；
If damping layer is excessively thin, the damping and amortization of knife bar is unable to satisfy, and the ability for absorbing vibrational energy reduces.
It is further preferred that on length requirement, it is total that the damping layer and carbon fibre composite layer account for damper mechanism
Long ratio is all 0.7, and such setting can achieve the optimal of damping layer and layer of carbon fiber material volume, guarantees the resistance of knife bar
Buddhist nun's property and loss of weight need.And one end that vibration-proof structure can be made to connect with cutterhead is cemented carbide material, be not only can ensure that
The rigidity of connection relationship, and vibration suppression can be played the role of.
Specifically for example: hard alloy layer outer diameter selects 40mm, when internal diameter is 25mm, outside carbon fibre composite layer 12
Diameter is 25mm, internal diameter 15mm；Damping layer 7 uses foamed aluminium layer structure, a diameter of 15mm.
When the numerical value of hard alloy layer outer diameter changes, the thickness of carbon fibre composite layer and damping layer is according to setting
Ratio equal proportion expands or reduces.
The rear end of vibration-proof structure 3 is connected with knife handle, and front end is connect with cutterhead；It is equally the connection using flat key and bolt
Mode.
Cutter bar of milling cutter is designed to assembled by the utility model, by the knife handle and intermediate vibration-proof structure part structure of rear end
At to provide structure basis for Vibration Absorption Designing.And a shank portion hard alloy is not needed, there is good economy
Property.
The utility model is when assembling knife handle and vibration-proof structure, to prevent vibration-proof structure from axial direction and the week of opposite knife handle occurs
To movement, devise the connection type of a type flange, realize the transmitting of constraint and the torque of freedom degree.
The vibration-proof structure of the utility model passes through the superposition between different materials, while improving the rigidity and damping of knife bar,
Have the function that vibrationproof and vibration suppression, and reduces the weight of knife bar.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of horizontal assembly type vibration damping milling cutter, which is characterized in that including cutterhead, vibration-proof structure and knife handle；The vibration damping knot
Structure includes three-decker, is successively damping layer, carbon fibre composite layer and hard alloy layer from inside to outside；The one of vibration-proof structure
End is extend into the cavity of knife handle, and the other end is extend into the cavity of facing cutter, and vibration-proof structure detachably connects with knife handle, facing cutter
It connects, forms assembled milling cutter.
2. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the hard alloy layer is one
A hollow cylindrical structure, one end closing, the other end is open, forms an inner cavity.
3. a kind of horizontal assembly type vibration damping milling cutter as claimed in claim 2, which is characterized in that the carbon fibre composite
Layer using epoxy rubber stick it is viscous fill it is intracavitary in hard alloy layer.
4. a kind of horizontal assembly type vibration damping milling cutter as claimed in claim 3, which is characterized in that the damping layer uses foam
Aluminium bar, it is intracavitary in carbon fibre composite layer that the foam aluminium bar equally uses epoxy rubber stick to stick.
5. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the vibration-proof structure and knife handle
Between be keyed by bolt peace, the bolt is used to limit the axial movement of vibration-proof structure；The flat key is for limiting
The circumferential movement of vibration-proof structure processed.
6. a kind of horizontal assembly type vibration damping milling cutter as claimed in claim 5, which is characterized in that the outer ring of the vibration-proof structure
Equipped with class flange, threaded hole is equipped on the circumferencial direction of the class flange；In knife handle and the vibration-proof structure cooperation
End also is provided with threaded hole, two threaded holes is bolted, for limiting the axial movement of vibration-proof structure；And in class flange and knife
Keyway is additionally provided on the circumferencial direction in pommel portion, the flat key is mounted in the keyway, for limiting the circumferential direction of vibration-proof structure
Movement.
7. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the knife handle, choice of material
For the structural alloy steel of high elastic modulus.
8. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the vibration-proof structure and milling cutter
It is connected between disk also by the flat key being distributed along its circumferencial direction.
9. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the damping layer, carbon fiber
The thickness of composite layer and hard alloy layer ratio is 1.5:1:1.5.
10. a kind of horizontal assembly type vibration damping milling cutter as described in claim 1, which is characterized in that the damping layer and carbon fiber
It is all 0.7 that dimension composite layer, which accounts for the ratio of damper mechanism overall length,.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821057805.XU CN208437733U (en) | 2018-07-04 | 2018-07-04 | A kind of horizontal assembly type vibration damping milling cutter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821057805.XU CN208437733U (en) | 2018-07-04 | 2018-07-04 | A kind of horizontal assembly type vibration damping milling cutter |
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| CN208437733U true CN208437733U (en) | 2019-01-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580995A (en) * | 2018-07-04 | 2018-09-28 | 山东大学 | A kind of horizontal assembly type vibration damping milling cutter |
| CN110000589A (en) * | 2019-04-10 | 2019-07-12 | 马科 | A kind of numerical control processing drilling attachment |
-
2018
- 2018-07-04 CN CN201821057805.XU patent/CN208437733U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580995A (en) * | 2018-07-04 | 2018-09-28 | 山东大学 | A kind of horizontal assembly type vibration damping milling cutter |
| CN108580995B (en) * | 2018-07-04 | 2023-11-03 | 山东大学 | Horizontal assembled vibration reduction milling cutter |
| CN110000589A (en) * | 2019-04-10 | 2019-07-12 | 马科 | A kind of numerical control processing drilling attachment |
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