CN102343446A - Shock-absorbing structure for cutting tools - Google Patents
Shock-absorbing structure for cutting tools Download PDFInfo
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- CN102343446A CN102343446A CN201010247745XA CN201010247745A CN102343446A CN 102343446 A CN102343446 A CN 102343446A CN 201010247745X A CN201010247745X A CN 201010247745XA CN 201010247745 A CN201010247745 A CN 201010247745A CN 102343446 A CN102343446 A CN 102343446A
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- damper
- shock
- cutting element
- knife bar
- bag groove
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Abstract
The invention provides a shock-absorbing structure for cutting tools, and the shocking-absorbing structure comprises a shock absorber and a cutter bar, wherein a threaded section is formed on the surface of the shock absorber; the inside of the cutter bar is provided with a bag-shaped groove, and an internal thread (by which the shock absorber is in threaded connection with the inside of the bag-shaped groove and seals off the bag-shaped groove) is formed on the wall of the bag-shaped groove; and the internal thread of the bag-shaped groove and the threaded section of the shock absorber are mutually meshed, and a gap exists between the internal thread and the threaded section, so that the shock absorber inertially alternately dashes against the internal thread in a relative position along with the chattering produced when the cutter bar carries out cutting, thereby achieving the purpose of attenuating the shock of the cutting tools.
Description
Technical field
The present invention relates to the technical field of cutting element, be meant the shock-damping structure of the cutting element electric shock amplitude that can decay during the processing especially.
Background technology
During the processing, workpiece causes living electric shock phenomenon to cutting element, has a strong impact on the measure of precision of cutting, therefore, can reduce the electric shock of cutting element at the inner mounting shock absorber Damper of handle of a knife.This shock-dampening method widely same trade is known; Relevant patent documentation is too numerous to enumerate; For example: TOHKEMY 2001-96403 number, 2003-62703 number, 2003-136301 number, 2005-177973 number; Or Te Kaipingdi 6-31505 number, 6-31507 number, or communique such as specially permit No. 2979823.
Wherein, 301, the cutting element of 507 liang of case records; Though all be to utilize the inertia of damper to reduce or eliminate electric shock;; " cutting element is from the perforate of handle of a knife rear end, and this hole leading section is inserted damper near point of a knife, and all the other hollow bulbs in the hole insert superhard core bar " that 301 patent cases disclose; And 507 patent cases disclose " the handle of a knife central portion of cutting element forms deep hole, has wherein disposed viscous fluid and balance weight ".
Disclose as for 823 patent cases; Pole spring is inserted in the hole of tool body; And elastomer is between pole spring and hole; And bit is set at the pole spring front end; Disposed the friction vibration absorptive material between this bit and the tool body; Vibration energy can be transformed to frictional heat, the vibrations of propagating to tool body are reduced.
The cutting element of these three patent cases because handle of a knife has deep hole, inserts damper in this hole, and is inapplicable for the minor diameter handle of a knife, and its deep hole machining is had to use instead depth drill and accomplished, and has therefore promoted processing charges relatively, and cost is higher.Except restriction handle of a knife diameter, cutting element inserts the roomy hollow part of damper, and the handle of a knife rigidity is descended, and complex structure, thereby causes problem such as cost rising.
In addition, the cutting element that 505 patent cases disclose embeds the damper of unlike material at the patchhole of handle of a knife, utilizes the contact friction of handle of a knife and damper to make shock attenuation.403,703 patent cases are the vibration-absorptive materials of packing in the inside of tool body, absorbing vibration energy and make shock attenuation.These patent cases are except having aforesaid same problem; The vibration-absorptive material of absorbing vibration energy; Need to use the high manganese-copper Mn-Cu damping alloy of fade performance etc.; But such alloy has problems such as price is high, processability is bad mostly, so be difficult to realize performance, all superior cutting element in cost two aspects.
So cost is low and electric shock inhibition effect is good, just become the demand emphasis of 973 patent cases.This patent case discloses a kind of shockproof cutting element, is that the handle of a knife at cutting element is provided with polygon bag groove, holds dampening assembly in the groove, and with cover plate sealing notch, allows dampening assembly remain on bag groove the inside and can not leave.The moulding of this dampening assembly can be strip, cylindric, polygon or polygonal etc.; Do not link handle of a knife, and and bag groove inwall between keeping the gap, in when vibrations processing; Can alternately collide the bag groove inwall of relative position because of inertia, the electric shock of decay cutting element.
But dampening assembly is apart from the excesssive gap of bag groove inwall, and alternately the energy that collides is bigger, is unfavorable for the damping of cutting element on the contrary.If dampening assembly is too small with the spacing of bag groove inwall, crash energy is also little, and damping effect is desirable not to the utmost naturally.
In view of this, the design people deeply inquires into the problem of prior art, and with the research and development of being engaged in related industry for many years and the experience of manufacturing, actively seeks solution, successfully develops the present invention finally, commonly uses the problem of creation with improvement.
Summary of the invention
The object of the present invention is to provide a kind of shock-damping structure of cutting element, utilize the intermeshing loosening characteristic of damper thread that is located in the cutting element, alternately clash into the thread at relative position through inertia, but the electric shock amplitude of effective attenuation cutting element.
For reaching above-mentioned purpose, technical solution of the present invention is:
A kind of shock-damping structure of cutting element, it includes: a damper, at shaping surface one thread segment; One knife bar, the bar head of an end for supplying blade to install has one bag of groove in knife bar inside, and the internal thread that is shaped on the cell wall, damper are bolted in the inner and sealing notch of bag groove, and the thread segment of this bag groove internal thread and damper is engaged with each other and has a slit.
This knife bar adds at least one elastomer in the bag groove the inside of sealing, and the end of this elastomer and damper offsets, with the monodisplacement amount of restriction damper.
This damper outside is absorbed in an elongate slots, and the bag groove of sealing protrudes a locating part at relative position, and this locating part inserts elongate slots and limits the angle that damper rotates.
This damper radially is absorbed in a recess at thread segment, and a bag groove protrudes a locating part at the cell wall of relative position, and this locating part inserts recess and limits the angle that damper rotates.
This damper is a cylinder, and this density of pillars is greater than knife bar and machinable, and said thread segment forms in the outer surface of this cylinder and is screwed onto loosely with the internal thread of knife bar bag groove.
This damper comprises: a density is greater than the cylinder of knife bar; One external member, its inside are held cylinder and can not be broken away from, and said thread segment forms in the outer surface of this external member and is screwed onto loosely with the internal thread of knife bar bag groove.
This external member has a cabin, and this cabin is absorbed in the external member end and supplies cylinder to insert, and opening firmly has a stuffer in the cabin.
Slit between the thread segment of this bag groove internal thread and damper is 0.01～0.5mm.
This bar head separates with knife bar and has an outstanding outside column, and with column closing bag channel opening, and knife bar and the solid welding of bar head are together.
The present invention adopts such scheme; Because the internal thread of knife bar bag groove and damper thread segment are engaged with each other and have the slit; The bag groove depth of adding sealing is greater than damper length; It is quite loosening to cause being bolted in the interior damper of knife bar bag groove; Though the about 0.01～0.5mm of the zone of reasonableness in this slit; Still help to be enclosed in bag damper of groove the inside; Along with cutting element execution operations causes living flutter phenomenon; In time be the reaction of inertia motion; Make thread segment alternately collide the internal thread of relative position, in order to the electric shock amplitude of decay cutting element.
In addition, the kinetic energy that cutting element is living because of electric shock causes adds the inertia force of damper bump bag groove relative position, damper is rotated and along the screw thread reach or retreat.This displacement is to see through following structure to limit:
One of which, this knife bar adds at least one elastomer in the bag groove the inside of sealing, and the end of this elastomer and damper offsets, the monodisplacement amount of restriction damper.Preferably resist an elastomer separately, see through exerting pressure of elastic force, make the damper range of movement maintain the middle part of bag groove at the damper two ends.
Its two, this damper outside is absorbed in an elongate slots, and the bag groove of sealing protrudes a locating part at relative position, inserts elongate slots and limits the angular range that damper rotates.Owing to possess a little slit between the wall of elongate slots and locating part appearance, so damper still can be according to bag groove of inertial impaction relative position, even along forward or backward mobile of screw thread.But the angle of rotating is restricted, and the displacement that no matter moves forward or retreat comes for a short time than the damper that has no interference.
Its three, this damper radially is absorbed in a recess at thread segment, and a bag groove protrudes a locating part at the cell wall of relative position, can insert recess and limits the angular range that damper rotates.Same, still possess a little slit between the wall of locating part appearance and recess, make the bag groove of damper, even along or backward mobile of screw thread forward according to the inertial impaction relative position.But the angle of rotating is restricted, and the displacement that no matter moves forward or retreat comes for a short time than the damper that has no interference.
Description of drawings
Fig. 1 is the stereogram of the present invention's first preferred embodiment;
Fig. 2 is the combination stereogram of the present invention's first preferred embodiment;
Fig. 3 is the assembled sectional view of the present invention's first preferred embodiment;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Fig. 5 is the cutaway view of the present invention's second preferred embodiment;
Fig. 6 is the stereogram of the present invention's the 3rd preferred embodiment, is shown as the structure of damper;
Fig. 7 is the assembled sectional view of the present invention's the 3rd preferred embodiment;
Fig. 8 is the assembled sectional view of the present invention's the 4th preferred embodiment;
Fig. 9 is the assembled sectional view of the present invention's the 5th preferred embodiment;
Figure 10 is the assembled sectional view of the present invention's the 6th preferred embodiment;
Figure 11 is the assembled sectional view of the present invention's the 7th preferred embodiment.
The main element symbol description
100 cutting elements, 10 bar heads, 11 columns
12 blades, 13 external screw teeths, 14 cutting ends
21 bags of groove 22 internal threads of 20 knife bars
30,50 dampers, 31,52 cylinders, 32,55 thread segments
33,56 elongate slots, 40 elastomers, 41 spring coils
51 external members, 53 stuffers, 54 cabins
60 locating parts, 61 rectangular blocks, 62 stubs
63 holes, 64 recess A pads
D slit P component S spacing
W inertia force
The specific embodiment
Below in conjunction with embodiment and conjunction with figs. the present invention is elaborated.
Fig. 1 to Fig. 4 shows a cutting instrument 100, is made up of a bar head 10, a knife bar 20 and a damper 30.Wherein, this bar head 10 has a column 11 and a blade 12, and it is outside and towards the direction of knife bar 20, the surface forms one section external screw teeth 13 that this column 11 is positioned at bar head 10, and blade 12 is locked in the cutting end 14 of bar head 10 and can freely dismantles.And knife bar 20 cylindrical shapes alongst are carved with a bag groove 21 that gos deep into knife bar 20 towards the end face of bar head 10, and the wall of this bag groove 21 forms internal thread 22.As for damper 30; Be a cylinder 31 in the present embodiment; These cylinder 31 density are greater than knife bar 20 and machinable; Suppose that the knife bar material is the iron or the iron containing alloy of metallic element; Because the about 7.87 * 103kg/m3 of density of iron; So density is greater than the metal material or the alloy of iron, all can make becomes cylinder required for the present invention, for example: copper metal or the copper-bearing alloy of the about 8.96 * 103kg/m3 of density; Or the lead metal of the about 11.34 * 103kg/m3 of density or lead-containing alloy; Or the tungsten metal of the about 19.25 * 103kg/m3 of density or contain tungsten alloy etc., the periphery of these cylinder 31 shafts is provided with thread segment 32, and end face is absorbed in an elongate slots 33.
Utilize instrument to insert in the elongate slots 33, can rotating cylinder 31 get into bag groove 21 inside.Because the degree of depth of bag groove 21 greater than cylinder 31 length, is sealed so bag groove 21 openings can be locked column 11, and with bar head 10 and the welding of knife bar 20 junctions, forms at least one pad A, allows the two be combined as a whole, and stops cylinder 31 to deviate from bag groove 21.
During use, an end that knife bar 20 is differed from blade 12 is installed in the cutting apparatus (drawing is not painted), orders about knife bar 20 and carries out actions such as feed or withdrawing.During the feed, blade 12 can be carried out the operations of cutting to workpiece (drawing is not painted), and workpiece bestows the reaction force of blade 12, can allow cutting element 100 produce continuous vibration.
Drawing can be seen; These cylinder 31 both ends of the surface are to maintaining interval S respectively between bag groove 21 bottoms and column 11 end faces; And there is slit d between internal thread 22 and the thread segment 32 of bridle joint each other; Bag groove 21 degree of depth of adding sealing are greater than damper cylinder 31 length; Causing cylinder 31 is quite loosening in bag groove 21 the insides; Though; The scope of this slit d approximately is 0.01～0.5mm; But; Distance is short; Reaction is fast; Add that cylinder 31 density are greater than knife bar 20; So cylinder 31 still can cause living inertia force W because of knife bar 20 vibrations; And make thread segment 32 threads alternately collide internal thread 22 threads of relative position, and suppress the kinetic energy of knife bar 20 with faint component P, reach the purpose of decay cutting element 100 electric shock amplitudes.
Based on the explanation of above-mentioned cutting element 100, to the shock-damping structure the following example of further deriving.
The shock-damping structure of Fig. 5 is similar with previous embodiment, difference be in: two elastomers 40 are welded in bag groove 21 bottoms and column 11 end faces respectively.This elastomer 40 is a reed in the present embodiment, is contained in damper 30 both ends of the surface between bag groove 21 bottoms and column 11 end faces, resists the two ends of damper 30.The kinetic energy that cutting element is living because of electric shock causes; Add the inertia force of damper bump bag groove relative position; Damper 30 is rotated and along the screw thread reach or retreat; Therefore add elastomer 40 in bag groove 21 the insides of sealing; This elastomer 40 offsets with the end of damper 30; This damper 30 receives the elastic force influence of elastomer 40, and the stroke of restriction inertia motion maintains bag groove 21 middle parts of sealing.
Fig. 6, the 7th changes damper 50, changes by an external member 51, a cylinder 52 and a stuffer 53 to form.This external member 51 is the double-screw bolt shape and gets deeply stuck in a cabin 54 at end face, and this external member density is less than cylinder 52, the for example iron of metallic element or iron containing alloy, its surface cut moulding one thread segment 55.This cylinder 52 is ganoid metal bars, and its density is greater than external member 51 or knife bar 20.And stuffer 53 shapes are same as the cross section in cabin 54, and one side outwardly has been absorbed in elongate slots 56.
In the present embodiment, stuffer 53 is blocked the opening in cabin 54 again in this cylinder 54 the insides, 52 insertion cabins and possess close-fitting packing relation with external member 51, and with external member 51 solid weldings be one, it is inner and can not separate to make cylinder 52 be enclosed in external member 51.
Utilize instrument to insert in the elongate slots 56, can rotate external member 51 and get into bag groove 21 inside.Because external member 51 length are sealed so column 11 is locked bag groove 21 openings less than the degree of depth of bag groove 21, and are welded with pad A in bar head 10 and knife bar 20 junction, allow the two be combined as a whole, stop external member 51 to be left.
Shock-damping structure shown in Figure 8 is similar to the aforementioned embodiment, difference be in: two elastomers are welded in bag groove 21 bottoms and column 11 end faces respectively.The elastomer of present embodiment is meant a spring coil 41, is contained in damper 50 both ends of the surface between bag groove 21 bottoms and column 11 end faces, resists the two ends of damper 50.This damper 50 receives the elastic force influence of spring coil 41, and the stroke of restriction inertia motion maintains bag groove 21 middle parts of sealing.
Fig. 9 shows a kind of shock-damping structure similar in appearance to 8 Fig. 8, and difference is in adding two locating parts 60.In the present embodiment, a locating part 60 wherein is rectangular blocks 61, protrudes from the end face of bar head 10 columns 11, its volume can insertion groove less than the volume of stuffer 53 elongate slots 56 in.Another locating part 60 is stubs 62, and the local rod body is embedded in the hole 63 that runs through knife bar 20 walls, and all the other parts as for excellent body then get into one through bag groove 21 and are recessed in the recess 64 of damper 50 outsides.Though recess 64 is as shown in the figure, be to pass thread segment 55 straight-through cylinder 52 axle center along diametric(al), do not get rid of the possibility that directly runs through cylinder 52.
These locating parts 60 possess the restriction effect of the anglec of rotation to the damper 50 of rotation.Briefly; Damper 50 is along screw thread rotation 360 degree; Just can reach the displacement of a tooth apart from length; But receive the damper 50 that locating part 60 is interfered; The angle of its rotation can only be in limited scope, for example 5 ° with interior, 15 ° with interior etc., the displacement that no matter moves forward or retreat; Damper 50 than having no interference must be little, so range of movement maintains the middle part of bag groove 21.
Figure 10 is implemented on locating part 60 in the shock-damping structure of Fig. 3.The locating part 60 of drawing is a rectangular block 61, protrudes from the end face of bar head 10 columns 11, and its volume is less than elongate slots 33 volumes of cylinder 31, so rectangular block 61 can insert in the elongate slots 33.
Figure 11 is implemented on locating part 60 in the shock-damping structure of Fig. 5.The locating part 60 of drawing is a stub 62, and the local rod body is embedded in the hole 63 that runs through knife bar 20 walls, and all the other parts as for excellent body then get into one through bag groove 21 and are recessed in the recess 64 of damper 30 outsides.Though recess 64 is as shown in the figure, be to pass thread segment 32 straight-through cylinder 31 axle center along diametric(al), do not get rid of the possibility that directly runs through cylinder 31.
The foregoing description only is explanation the present invention, and is non-for limiting the present invention.Have the knack of various variations that this art derives from the foregoing description, revise with application all in category of the present invention.
Claims (9)
1. the shock-damping structure of a cutting element is characterized in that: includes,
One damper is at shaping surface one thread segment;
One knife bar, the bar head of an end for supplying blade to install has one bag of groove in knife bar inside, and the internal thread that is shaped on the cell wall, damper are bolted in the inner and sealing notch of bag groove, and the thread segment of this bag groove internal thread and damper is engaged with each other and has a slit.
2. the shock-damping structure of cutting element as claimed in claim 1 is characterized in that: this knife bar adds at least one elastomer in the bag groove the inside of sealing, and the end of this elastomer and damper offsets, to limit the monodisplacement amount of damper.
3. the shock-damping structure of cutting element as claimed in claim 1, it is characterized in that: this damper outside is absorbed in an elongate slots, and the bag groove of sealing protrudes a locating part at relative position, and this locating part inserts elongate slots and limits the angle that damper rotates.
4. the shock-damping structure of cutting element as claimed in claim 1, it is characterized in that: this damper radially is absorbed in a recess at thread segment, and a bag groove protrudes a locating part at the cell wall of relative position, and this locating part inserts recess and limits the angle that damper rotates.
5. like the shock-damping structure of each described cutting element in the claim 1 to 4; It is characterized in that: this damper is a cylinder; This density of pillars is greater than knife bar and machinable, and said thread segment forms in the outer surface of this cylinder and is screwed onto loosely with the internal thread of knife bar bag groove.
6. like the shock-damping structure of each described cutting element in the claim 1 to 4, it is characterized in that: this damper comprises: a density is greater than the cylinder of knife bar; One external member, its inside are held cylinder and can not be broken away from, and said thread segment forms in the outer surface of this external member and is screwed onto loosely with the internal thread of knife bar bag groove.
7. the shock-damping structure of cutting element as claimed in claim 6, it is characterized in that: this external member has a cabin, and this cabin is absorbed in the external member end and supplies cylinder to insert, and opening firmly has a stuffer in the cabin.
8. the shock-damping structure of cutting element as claimed in claim 1, it is characterized in that: the slit between the thread segment of this bag groove internal thread and damper is 0.01～0.5mm.
9. the shock-damping structure of cutting element as claimed in claim 1 is characterized in that: this bar head separates with knife bar and has an outstanding outside column, and with column closing bag channel opening, and knife bar and the solid welding of bar head are together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010247745XA CN102343446A (en) | 2010-07-30 | 2010-07-30 | Shock-absorbing structure for cutting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010247745XA CN102343446A (en) | 2010-07-30 | 2010-07-30 | Shock-absorbing structure for cutting tools |
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| Publication Number | Publication Date |
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| CN102343446A true CN102343446A (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010247745XA Pending CN102343446A (en) | 2010-07-30 | 2010-07-30 | Shock-absorbing structure for cutting tools |
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| CN (1) | CN102343446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984839A (en) * | 2017-04-20 | 2017-07-28 | 郑州市钻石精密制造有限公司 | A kind of anti-swing rotating tool |
| CN112935295A (en) * | 2021-01-22 | 2021-06-11 | 山东大学 | Embedded damping vibration attenuation lathe tool bar and method for deep cavity machining |
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|---|---|---|---|---|
| DE4223256A1 (en) * | 1992-07-15 | 1994-01-20 | Schaeffler Waelzlager Kg | Vibration-damping roller-bearing adjuster esp for machine tool spindle - attenuates radial and axial vibrations by compression of liq., pref. electro-rheological liq., in gap between sawtooth projections and grooves around nut |
| JP2005177973A (en) * | 2003-11-26 | 2005-07-07 | Sumitomo Electric Hardmetal Corp | Vibration control cutting tool |
| JP2005199391A (en) * | 2004-01-16 | 2005-07-28 | Hitachi Ltd | Vibration isolating tool holder |
| JP2006102837A (en) * | 2004-10-01 | 2006-04-20 | Sumitomo Electric Hardmetal Corp | Vibration absorbing cutting tool |
| JP2008100332A (en) * | 2006-10-20 | 2008-05-01 | Hitachi Tool Engineering Ltd | Vibration isolating tool |
| CN201318164Y (en) * | 2008-12-05 | 2009-09-30 | 北京六合伟业科技有限公司 | Damping extension bar |
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2010
- 2010-07-30 CN CN201010247745XA patent/CN102343446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4223256A1 (en) * | 1992-07-15 | 1994-01-20 | Schaeffler Waelzlager Kg | Vibration-damping roller-bearing adjuster esp for machine tool spindle - attenuates radial and axial vibrations by compression of liq., pref. electro-rheological liq., in gap between sawtooth projections and grooves around nut |
| JP2005177973A (en) * | 2003-11-26 | 2005-07-07 | Sumitomo Electric Hardmetal Corp | Vibration control cutting tool |
| JP2005199391A (en) * | 2004-01-16 | 2005-07-28 | Hitachi Ltd | Vibration isolating tool holder |
| JP2006102837A (en) * | 2004-10-01 | 2006-04-20 | Sumitomo Electric Hardmetal Corp | Vibration absorbing cutting tool |
| JP2008100332A (en) * | 2006-10-20 | 2008-05-01 | Hitachi Tool Engineering Ltd | Vibration isolating tool |
| CN201318164Y (en) * | 2008-12-05 | 2009-09-30 | 北京六合伟业科技有限公司 | Damping extension bar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984839A (en) * | 2017-04-20 | 2017-07-28 | 郑州市钻石精密制造有限公司 | A kind of anti-swing rotating tool |
| CN112935295A (en) * | 2021-01-22 | 2021-06-11 | 山东大学 | Embedded damping vibration attenuation lathe tool bar and method for deep cavity machining |
| CN112935295B (en) * | 2021-01-22 | 2022-06-07 | 山东大学 | Embedded damping vibration attenuation lathe tool bar and method for deep cavity machining |
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Application publication date: 20120208 |