CN104607704B - A kind of impact damper system formula cutter bar of milling cutter - Google Patents
A kind of impact damper system formula cutter bar of milling cutter Download PDFInfo
- Publication number
- CN104607704B CN104607704B CN201510059651.2A CN201510059651A CN104607704B CN 104607704 B CN104607704 B CN 104607704B CN 201510059651 A CN201510059651 A CN 201510059651A CN 104607704 B CN104607704 B CN 104607704B
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- China
- Prior art keywords
- cutter
- mass
- impact damper
- heart axle
- vibration damping
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The present invention discloses a kind of impact damper system formula cutter bar of milling cutter, including tool rest, vibration damping pallet, mass, arbor assembly, cutter hub；Cutter head body is provided with cavity, and afterbody is provided with endoporus and interface, and middle part is axially arranged with endoporus；Heart axle passes through axial bore in the middle part of cutter hub, by afterbody Internal hole positioning；Mass is inserted in cutter head cavity, positioned at the small end and tool rest of heart axle it is cylindrical between；Vibration damping pallet is fixedly connected with cutter head body cavity, and vibration damping pallet side is provided with arc groove, and arc groove is used to place mass, and opposite side is provided with blind hole, and strong permanent magnetic iron is filled in blind hole, and permanent magnet is adsorbed in mass on vibration damping pallet；Tool rest is fixedly connected with the cavity of cutter hub, and tool rest top is provided with end key, and the transmission of torque is cut in the installation and facing cutter for facing cutter.The present invention effectively can suppress to grow the chatter phenomenon of overhanging cutter, it is adaptable to deep hole, the processing of deep cavity configuration part.
Description
Technical field
The present invention relates to a kind of impact damper system formula cutter bar of milling cutter, and in particular to the vibration damping in a kind of metal Milling Processes
Knife bar, belongs to machining technology field.
Background technology
In metal cutting process, chatter phenomenon between cutter and workpiece, usually occurs.Flutter affects machining accuracy, drop
Low lathe and cutting-tool's used life, meanwhile, flutter is accompanied by noise, pollutes processing environment.The elimination of flutter is except selecting
Suitable cutting parameter, can also pass through to improve rigidity, the damping realization of tooling system or lathe.Damper is applied to into milling
Knife is a kind of good chattering elimination scheme.
Damper is broadly divided into active, half active and passive three kinds of forms.Actively generally need with the damper of half active form
Supply, complicated control algolithm and the larger space of extra power are wanted, and milling cutter is caused as motion state and space limit
Passive damping device is compared and actively, partly is actively easier to realize on milling cutter.
Passive damping device is divided into tuner-type, impact type, eddy current type, electromagnetic type, friction-type etc. again.Wherein impact type relative to
Other several passive damping utensils have simple structure, the features such as easy to adjust.Impact type damping device usually has larger
Mass ratio, thus effectiveness in vibration suppression is good, but as milling cutter is in high speed rotation status, and the bias of mass can produce huge
Centrifugal force, so that milling cutter unstability so that damper loses effectiveness in vibration suppression, causes potential safety hazard.The bias for solving mass is asked
Topic is one of the technological difficulties of impact type damper in long overhanging vibration damping milling cutter application.
The content of the invention
The invention aims to solve the above problems, a kind of impact damper system formula cutter bar of milling cutter is proposed, to eliminate milling
Chatter phenomenon in processing, improves metal cutting quality.The present invention improves metal using impact principle dissipation vibrational energy
Except efficiency, part to be processed surface roughness is reduced.
A kind of impact damper system formula cutter bar of milling cutter, including tool rest, vibration damping pallet, mass, arbor assembly, cutter hub；
Cutter head body is provided with cavity, and afterbody is provided with interface, and middle part is axially arranged with endoporus, and cutter hub endoporus rear end is additionally provided with knife tail
Endoporus, knife tail endoporus and orifice；
Arbor assembly includes heart axle, and one end of heart axle is small end, and to hold greatly, the small end of heart axle is located at cutter head body to the other end
In cavity, the big end of heart axle is fixed in knife tail endoporus, and heart axle is through axial bore in the middle part of cutter hub；
Mass is inserted in cutter head inner chamber, positioned at the small end and tool rest of heart axle it is cylindrical between；
Vibration damping pallet is fixedly connected with cutter head body cavity, and vibration damping pallet side is provided with arc groove, and arc groove is used for
Mass is placed, opposite side is provided with blind hole, and blind hole is used to fill strong permanent magnetic iron, and ferromagnetics mass is adsorbed in vibration damping by permanent magnet
On pallet；
Tool rest is threadably secured with the cavity of cutter hub and is connected, and tool rest top is provided with end key, for installing cutterhead.
It is an advantage of the current invention that：
(1) no matter cutter rotating speed just, can effectively suppress milling to add to a kind of impact type vibration damping cutter bar of milling cutter of the invention
Cutter chatter phenomenon in work, it is adaptable to various deep chambers, the processing of deep-hole parts；
(2) a kind of impact type vibration damping cutter bar of milling cutter simple structure of the invention, without the need for tuning, the optimization of effectiveness in vibration suppression mainly according to
Realize by changing supporting damping base and mass；
(3) a kind of impact type vibration damping cutter bar of milling cutter long service life of the invention, damping mechanism are made up of cheap material, need not
Sealing structure, working service are with low cost.
Description of the drawings
Fig. 1 is axial sectional view of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the left view of the present invention；
Fig. 4 is the right view of the present invention；
Fig. 5 is the vibration damping pallet axial sectional view of the present invention；
Fig. 6 is the vibration damping pallet left view of the present invention.
In figure：
1- tool rest 2- vibration damping pallet 3- masses
4- arbor assembly 5- cutter hub 101- tool rest internal thread holes
The cylindrical 103- ends key in 102- seats bottom
201- permanent magnet 202- hexagonal counter sink 203- pallet external screw threads
204- arc grooves
401- hex nut 402- check washer 403- heart axle small ends
The big end 405- hexagonals counter sink 406- heart axles of 404- heart axles
501- cutter head cavity 502- knife tail endoporus 503-Capto interfaces
Specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The present invention is a kind of impact damper system formula cutter bar of milling cutter, and axial section view is as shown in figure 1, front view, left view, right view
Respectively as shown in Figure 2,3, 4；
A kind of impact damper system formula cutter bar of milling cutter, including tool rest 1, vibration damping pallet 2, mass 3, arbor assembly 4, cutter hub 5.
5 head of cutter hub is provided with cutter head cavity 501, and afterbody is provided with Capto interfaces 503, and middle part is axially arranged with endoporus, for pacifying
Dress heart axle 406；5 endoporus rear end of cutter hub is additionally provided with threaded knife tail endoporus 502, and knife tail endoporus 502 is connected with Capto interfaces 503
It is logical；Cavity 501 is used to install vibration damping pallet 2, mass 3, hex nut 401 and check washer 402；Knife tail endoporus 502 is used for
The installation of arbor assembly 4.
Arbor assembly 4 includes hex nut 401, check washer 402, hexagonal counter sink 405, heart axle 406；
One end of heart axle 406 is heart axle small end 403, and the other end is the big end 404 of heart axle, and it is heavy that 406 afterbody of heart axle is provided with hexagonal
Head bore 405, the heart axle small end 403 of heart axle 406 are inserted by the endoporus of Capto interfaces 503, heavy by hexagonal using outer hexagonal spanner
The heart axle of heart axle 406 big end 404 is screwed in 502 bottom of knife tail endoporus by head bore 405, and heart axle 406 is inside through 5 middle part axle of cutter hub
Hole, the heart axle small end 403 of heart axle 406 enter 5 head cavity 501 of cutter hub, and the heart axle small end 403 of heart axle 406 passes through hex nut
401 fix, and check washer 402 is provided between hex nut 401 and cutter hub 5, and the big end 404 of heart axle of heart axle 406 is by knife tail
Hole 502 is fixed；Hex nut 401 can provide suitable compression for cutter hub 5, and it is firm that suitable compression can significantly improve cutter hub
Degree, reduces the Oscillation Amplitude of cutter hub.
After arbor assembly 4 is installed, mass 3 is inserted into cutter head inner chamber 501；
As shown in Figure 5, Figure 6, vibration damping pallet 2 includes permanent magnet 201, hexagonal counter sink 202, pallet external screw thread 203, arc
Groove 204,2 side of vibration damping pallet are provided with arc groove 204, and arc groove 204 is used to place mass 3, and opposite side is provided with circle
Shape blind hole, blind-hole bottom have interior hexagonal counter sink 202, are circumferentially with pallet external screw thread 203, and blind hole is used for the peace of permanent magnet 201
Vibration damping pallet 2 is screwed in knife by hexagonal counter sink 202 using outer hexagonal spanner by dress, the interior hexagonal counter sink 202 of blind-hole bottom
5 head endoporus of body, pallet external screw thread 203 are coordinated with tool rest internal thread hole 101, so as to seal mass 3.Permanent magnet 201
Vibration damping pallet is pressed into after this so that mass 3 is adsorbed on vibration damping pallet 2.Permanent magnet 201 is for providing to mass 3
Appropriate restoring force, prevents the stability of 3 long-time Influence from Eccentric milling cutter extension bar of mass；
Tool rest 1 is with cutter hub 5 with cylindrical 102 tight fit connection of base.There is the end key 103 fixed for cutterhead on 1 top of tool rest
With tool rest internal thread hole 101,1 bottom of tool rest is provided with for connecting the cylindrical of cutter hub 5, and tool rest 1 is positioned on cutter hub 5 with end face.
The tool rest 1 is made up of steel or hard alloy, holds the running part of end key 103 thereon according to GB/T613-93
From.1 bottom outside diameter of tool rest for 5 head diameter of cutter hub 65%～70%, cylindrical and cutter head body is by screw thread tight fit
Connection.
The cutter hub 5 is made up of tool steel or hard alloy, is provided with 3 ° of cone angles.Outside 5 head endoporus of cutter hub and 1 bottom of tool rest
By being threadedly coupled, 5 afterbody Capto interfaces of cutter hub 503 perform ISO26623-1 standards to circle.5 internal cavities of cutter hub are provided with endoporus use
In the installation of heart axle 406,5 endoporus afterbody of cutter hub is provided with knife tail endoporus 502 for the axial restraint of heart axle 406.
The vibration damping pallet 2 is made up of the non-ferromagnetic material material such as copper or aluminium, and it is recessed that vibration damping pallet 2 is provided with arc in one end
Groove 204, for the radial positioning of circular mass 3, the centre of gravity adjustment of the inclination angle foundation mass 3 of arc groove 204.Vibration damping support
2 other end of disk has blind round hole for the installation of permanent magnet 201, and blind hole is used for the offer of 3 radial direction restoring force of mass.Blind hole bottom
There is interior hexagonal counter sink 202 at end, for installation of the vibration damping pallet 2 in heart axle 406.
The mass 3 is circular metal ball, and material is wolfram steel.Mass 3 is adsorbed by the permanent magnet 201 of vibration damping pallet 2,
Positioned by arc groove 204.The heart axle small end 403 of mass 3 and heart axle 406 leaves the gap of about 2mm, mass 3 and cutter hub 5
Inwall minimum clearance is about 0.1mm, and the numerical basis hammering experiment in concrete gap determines.The purpose of gap numerical evaluation is to adjust
Whole impact damper effectiveness in vibration suppression, maximizes the vibration attenuation rate of cutter bar of milling cutter.
In the arbor assembly 4,401 material of hex nut is steel, is installed on the heart axle small end 403 of heart axle 406, for knife
The offer of 5 pretightning force of body；406 material of heart axle is steel, intentionally the big end 404 of axle and heart axle small end 403, and two ends are equipped with screw thread, the heart
403 screw thread of axle small end is coordinated with pretension hex nut 401, big 404 screw thread of end of heart axle be used for positioning of the heart axle 406 in cutter hub 5,
Coordinate.
When milling arbor installation facing cutter carries out Milling Process, the blades in rotation incision machined material on cutterhead, due to knife
The interaction of piece and material, milling arbor thus be subject to the effect of periodicity side knock perturbed force.Because high length-diameter ratio cutter is
Typical weak separation, low resistance part, knife bar are difficult to damp decay vibration at short notice by own material, so as to produce compared with
Significantly vibrate.The impact type Boring Bar can still ensure higher rigidity and damping under the conditions of 8 times of draw ratios
Characteristic, so as to the efficient stable for realizing deep cavity configuration part cuts.
When the impact damper system knife bar receives lateral impact forces, due to knife bar first-order modal be curved mode, the vibration of cutter hub 5
Mainly caused by transverse deformation.The rigidity of cutter hub 5 is improved, the transversely deforming for reducing cutter hub 5 is to suppress cutter hub cutting vibration
One of effective way.The innovation of the impact damper system knife bar is that cutter hub internal mandrel 406 is applied, and heart axle 406 can both be carried
For for lifting the compression of 5 rigidity of cutter hub, also Coulomb friction resistance can be produced by the friction between cutter hub center bore inner wall
Buddhist nun.The impact damper system knife bar is applying suitable pretightning force to arbor assembly 4 first using front, and arbor assembly 4 receives drawing should
The effect of power applies certain compression in turn to cutter hub 5, and cutter hub produces micro compression, former according to the mechanics of materials
Reason, the effect of compression with larger reinforcing cutter hub static rigidity, and can improve the fatigue strength of cutter hub, so as to effectively reduce
Unit lateral impact loading acts on the Relative Vibration deformation quantity of lower knife body 5.
The vibration amplitude of cutter hub 5 is mainly affected by two conditions of rigidity and damping, and the damping for improving cutter hub 5 is to reduce long outstanding
Another effective way of milling cutter vibration is stretched, cutter hub 5 is co-axially mounted with arbor assembly 4, and the deformation of cutter hub 5 necessarily causes heart axle 406
Synchronous deformation, as the big end of heart axle 406 is by screw thread constraint, heart axle deformation quantity is less with respect to knife bar, thus heart axle 406 is with respect to knife
5 endoporus of body produces axial slip, and because the impact of compression, produces therebetween huge Coulomb friction damping, so as to
Enough vibrational energies huge in shorter time dissipation, lift the dynamic rate of cutter hub 5.
Impact damper belongs to one kind of passive damping device, and impact damper consumes vibrational energy, punching using collision principle
Hit damper have simple structure, without the need for tuning, quality is big the features such as.The intrinsic frequency of knife bar can be reduced using impact damper
Rate, prevents the periodicity covibration of cutting force initiation in cutter at high speeds rotary course.As traditional impact damper is impacted
The randomness of mass position, impact mass block easily cause the bias of cutter, cause larger eccentric force when high speed rotates,
Cause cutter unstability, cause potential safety hazard, therefore be difficult to apply in high speed rotating tool.The wound of the impact damper system cutter bar of milling cutter
New part is a kind of built-in specially designed self-centering impact damper (vibration damping pallet 2, mass 3 form damper), should
Torque and the synergy of electromagnetic force that impact damper is produced by given shape vibration damping pallet 2, can effectively prevent cutter
In rotary course, the long-time of impact mass block is eccentric.When knife bar receives impact loading, spherical mass 3 is due to itself
Arcuately groove 204 is rolled effect of inertia, and continuous inelastic collision occurs with the inwall of cutter head cavity 501, when mass 4
When the centre of sphere deviates knife bar axis, under the synergy of the magnetic field force that gravity and permanent magnet 201 apply, by mechanical analysis
Mass 3 is acted on by an additional moment, and the action effect of the torque just causes mass to return knife bar axial location, replys
The size of torque can pass through to change the curvature of arc groove 204 and freely change.The use of permanent magnet 201 can ensure that the reply
Torque is not lost because the locus of knife bar changes, even when knife bar rotating shaft is perpendicular to horizontal plane.
Claims (9)
1. a kind of impact damper system formula cutter bar of milling cutter, including tool rest, vibration damping pallet, mass, arbor assembly, cutter hub；
Cutter head body is provided with cavity, and afterbody is provided with interface, and middle part is provided with axial bore, and cutter hub endoporus rear end is additionally provided with knife tail
Hole, knife tail endoporus and orifice；
Arbor assembly includes heart axle, and one end of heart axle is small end, and to hold greatly, the small end of heart axle is located at cutter head body cavity to the other end
In, the big end of heart axle is fixed in knife tail endoporus, and heart axle is through axial bore in the middle part of cutter hub；
Mass is inserted in cutter head inner chamber, positioned at the small end and tool rest of heart axle it is cylindrical between；
Vibration damping pallet is fixedly connected with cutter head body cavity, and vibration damping pallet side is provided with arc groove, and arc groove is used to place
Mass, opposite side are provided with blind hole, and blind hole is used to fill strong permanent magnetic iron, and ferromagnetics mass is adsorbed in vibration damping pallet by permanent magnet
On；
Tool rest is threadably secured with the cavity of cutter hub and is connected, and tool rest top is provided with end key, is installed for cutterhead.
2. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, the small end of described heart axle pass through hex nut
It is fixed, check washer is provided between hex nut and cutter hub.
3. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described tool rest are closed by tool steel or hard
Gold is made, and holds the running part of end key to select according to GB/T6132-1993 thereon.
4. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described tool rest base outside diameter are cutter hub
The 65%～70% of head diameter, it is cylindrical to be connected with cutter head body cavity.
5. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described cutter hub is by tool steel or hard alloy
Make, be provided with 3 ° of cone angles.
6. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, the afterbody interface of described cutter hub are performed
ISO26623-1 standards.
7. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described vibration damping pallet is by non-ferromagnetic material material
Make.
8. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described permanent magnet adopt NdFeB material system
Into.
9. a kind of impact damper system formula cutter bar of milling cutter according to claim 1, described mass is circular metal ball, material
For wolfram steel, metal ball is 0.1mm with cutter hub inwall minimum clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510059651.2A CN104607704B (en) | 2015-02-04 | 2015-02-04 | A kind of impact damper system formula cutter bar of milling cutter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510059651.2A CN104607704B (en) | 2015-02-04 | 2015-02-04 | A kind of impact damper system formula cutter bar of milling cutter |
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| CN104607704A CN104607704A (en) | 2015-05-13 |
| CN104607704B true CN104607704B (en) | 2017-03-29 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10442014B2 (en) * | 2015-05-21 | 2019-10-15 | Kyocera Corporation | Holder, cutting tool, and method of manufacturing machined product using the same |
| CN106363198A (en) * | 2016-11-07 | 2017-02-01 | 东南大学 | Dynamic vibration attenuation boring tool |
| CN106424781B (en) * | 2016-11-16 | 2018-08-17 | 哈尔滨理工大学 | A kind of damping boring cutter with built-in rotation bump leveller |
| CN109128321A (en) * | 2018-11-23 | 2019-01-04 | 哈尔滨理工大学 | A kind of slotting cutter bar of milling cutter of intelligence |
| CN110355410A (en) * | 2019-06-19 | 2019-10-22 | 哈尔滨理工大学 | A kind of plug in milling arbor of impact type vibration damping |
| CN114192855B (en) * | 2021-12-02 | 2023-04-18 | 北京航空航天大学 | Vibration reduction milling cutter |
| CN115070096B (en) * | 2022-08-16 | 2022-10-25 | 成都航空职业技术学院 | Vibration reduction method for milling cutter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201070679Y (en) * | 2007-08-10 | 2008-06-11 | 南车资阳机车有限公司 | Over-long anti-vibration toolbar |
| CN101508029B (en) * | 2009-03-20 | 2010-06-16 | 北京工业大学 | Boring bar based on friction damping |
| US8734070B2 (en) * | 2010-10-20 | 2014-05-27 | Kennametal Inc. | Toolholder with externally-mounted dynamic absorber |
| CN102974895A (en) * | 2012-12-03 | 2013-03-20 | 吴江市社翊纺织有限公司 | Vibration-damping cutter bar used for deep hole processing of long sleeve of spinner |
| CN204430390U (en) * | 2015-02-04 | 2015-07-01 | 北京航空航天大学 | A kind of impact damper system formula cutter bar of milling cutter |
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