CN209614977U - The knife bar and cutter of damping shock absorber and the application damping shock absorber - Google Patents
The knife bar and cutter of damping shock absorber and the application damping shock absorber Download PDFInfo
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- CN209614977U CN209614977U CN201920177324.0U CN201920177324U CN209614977U CN 209614977 U CN209614977 U CN 209614977U CN 201920177324 U CN201920177324 U CN 201920177324U CN 209614977 U CN209614977 U CN 209614977U
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- shock absorber
- damping shock
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- cutter
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Abstract
The utility model provides a kind of damping shock absorber and knife bar and cutter using the damping shock absorber, including adjusting bar, mass block is sheathed on the outside of adjustment bar by clearance fit, block assembly is supported to be set to the both ends of the adjustment bar, elastomeric components are sheathed on the outside of the adjustment bar and are placed between the mass block and the support block assembly；The support block assembly, elastomeric components, mass block are tightly connected, the gap filling damping oil between the mass block and adjustment bar.The utility model additionally provides the knife bar and cutter using above-mentioned damping shock absorber.The utility model greatly reduces the vibration when Tool in Cutting of long overhanging, realize efficient, stable cutting, the requirement for meeting the precision and roughness of product processing has the advantages that stability is high, precision is high, is particularly suitable for the long metal cutting for overhanging processing operating condition and uses.
Description
Technical field
The utility model relates to Machining Technology for Cutting field more particularly to a kind of damping shock absorber and apply the damping vibration attenuation
The knife bar and cutter of device, the especially suitable length overhanging processing operating condition of such cutter (including Vehicle Processing cutting, Milling Machining are cut, boring adds
Work cutting etc.) metal cutting use.
Background technique
Due to the specific function of deep processing part, deep processing part usually becomes the key for determining product quality and benefit
Part.And the uniqueness that deep processing is constrained by its big L/D ratio, more interference, produce its stiffness system it is poor, it is cooling difficult, vibrate it is bright
Aobvious intrinsic disadvantage, in addition in deep processing cutter rotation and feeding, the dynamic loading of simultaneous high-pressure cutting fluid, which couples, to be made
With this leads to the vibration of the flexion torsion in deep processing frequently, and exacerbates the abrasion of deep processing cutter.These operating conditions are for cutter
Requirement overhang it is very long, common knife bar at this time leads to not meet machining accuracy since its rigidity is low, cutting vibration is severe
And roughness requirements, even it is unable to complete metal cutting material removal process.And at present in deep-processing process, typically
Auxiliary support position is manually blindly moved by experience, lack of wisdom active vibration suppression measure causes effectiveness in vibration suppression undesirable.At this time
Meet this requirement with regard to needing a kind of scheme, super large quality knife bar can be used, but can only also solve subproblem, this
The knife bar with damping device is just needed to go to reduce vibration, adjustment offsets vibration frequency, meets metal cutting requirement.
The patent document of Patent No. CN206326142U discloses a kind of knife bar damper, comprising: a body of rod has one
Internal chamber, the internal chamber include a peripheral wall and end walls；One damper is located in the internal chamber, including one and this week
The opposite circumferential surface of wall and two end faces opposite with the end walls respectively；Two flexible absorbing components, be respectively arranged on the end walls and this two
Between end face；At least one flexible damping adjustment part is radially set between the peripheral wall and the circumferential surface and is axially set to the end
Between wall and the two flexible absorbing component.
But in actual use, utility model people is found that while to use this art solutions can be in chip
Knife bar is reduced in process and is shaken, but can only solve the problems, such as part damping, use scope also has limitation, actively imitates
Fruit is also not very significant.
Utility model content
Technical problem to be solved by the utility model is: vibration when its cutting how is reduced for the long cutter to overhang,
Efficient, stable cutting is realized, to meet the requirement of the precision and roughness of product processing.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of damping shock absorber, feature
It is, comprising:
Adjust bar；
Mass block, the mass block are sheathed on the outside of the adjustment bar by clearance fit；
Block assembly is supported, the support block assembly is set to the front and rear ends of the adjustment bar；
Elastomeric components, the elastomeric components be sheathed on it is described adjustment bar outside and be placed in the mass block with it is described
It supports between block assembly；
The support block assembly, elastomeric components, mass block are tightly connected, the gap between the mass block and adjustment bar
Fill damping oil.
It is mutually fitted preferably, the inside of the mass block is offered along its axial direction with the outer shape of the adjustment bar
The through-hole matched, the adjustment bar passes through the through-hole, and is equipped with gap between the inner wall of the mass block and adjustment bar.
Preferably, the support block assembly includes front support block and rear end supporting block, front support block, rear end support
Block is individually fixed in the front and rear ends of the adjustment bar.
Preferably, the elastomeric components include preceding elastomer and rear elastomer, preceding elastomer is set to the front end branch
Between bracer and the mass block, rear elastomer is set between the mass block and the rear end supporting block.
Preferably, between the front support block and the preceding elastomer, the preceding elastomer and the mass block it
Between, the mass block and it is described after between elastomer, it is described after sealing knot is equipped between elastomer and the rear end supporting block
Structure.
Preferably, the sealing structure be O-ring seal, the front support block, rear end supporting block respectively with it is described
The front and rear ends for adjusting bar are threadedly coupled, and apply axial pressure to the mass block by the front support block, rear end supporting block
Clamp force makes to seal at each O-ring seal, guarantees that the mass block and the damping oil adjusted between bar will not leak.
Preferably, the mass block is the cone that point diameter is big, rear end diameter is small.
Preferably, the size of the preceding elastomer is greater than the size of the rear elastomer, and the preceding elastomer is rigid
Degree is greater than the rigidity of the rear elastomer；The preceding elastomer and rear elastomer are made of vibration isolation rubber, be provided simultaneously with spring and
The effect of damping.
Preferably, the size of the front support block is greater than the size of the rear end supporting block.The utility model also mentions
A kind of damping vibration absorbing cutter bar, including cutter bar body have been supplied, has further included a kind of above-mentioned damping shock absorber, the cutter bar body front end
Equipped with the hollow structure to match with the damping shock absorber outer profile, the damping shock absorber is built in the cutter bar body
It is interior, and the both ends of the damping shock absorber are supported in the both ends of the hollow structure of the cutter bar body front end.
Subtract preferably, the mass block and its both ends elastomeric components inside the damping shock absorber form a passive type
Vibrating system, the support block assembly at damping shock absorber both ends are respectively arranged on the front end and middle section of cutter bar body, by knife bar front end in
The vibration of section feeds back one group of control force after passing to passive type vibration insulating system, controls the vibration of cutter bar body, reaches the mesh of vibration damping
's.
Preferably, the vibration form of the passive type vibration insulating system is the length direction of the radial translation and second order of single order
It swings, matches with the single order of cantilever beam pattern cutter bar body and second_mode；By adjusting the position of centre of gravity of mass block and two
The rigidity size for holding elastomeric components, while combining with damping oil, be fitted cutter bar body single order and second order formation frequency and
The vibration shape controls the vibration of cutter bar body resonance zone, is decreased to vibration minimum.
The utility model additionally provides a kind of damping vibration attenuation cutter, including cutter head, further includes a kind of above-mentioned damping vibration attenuation
Knife bar, the cutter head are installed on the support block assembly of the cutter bar body front end, while the hollow knot with the cutter bar body
Structure front end is fixed.
The working principle of the utility model is as follows:
A, for tool nose cutting tip due to the effect of cutting force, cutter random, alternation external applied load by one makes knife
Tool generates vibration, and the quiet rigidity of cutter is lower, and vibration frequency is lower, amplitude is bigger, and Tool in Cutting is more unstable；Random external applied load
When frequency is close with the intrinsic frequency of cutter itself, resonance is generated, vibrates especially violent, seriously affects that cutter is normal, stabilization is cut
It cuts.
B, the utility model is provided with a damping shock absorber to cutter, and since structure limits, damping shock absorber must be interior
It sets, cutter bar portion must be set as hollow, this can reduce the rigidity of cutter, and the utility model is set as bellmouth for hollow, meets
While cantilever beam mechanical characteristic, holding and quiet rigid raising cutter, retain more sufficient damping shock absorber installation space.
C, damping shock absorber structure are as follows: be supported on the length on elastomer (being provided simultaneously with damping and spring effect) including both ends
The front and back ends supporting block for being fixed on adjustment bar both ends is arranged in the quality of assistance system of taper damping body composition, both ends elastomer
On, front and back ends supporting block is respectively arranged at the front end and middle section of knife bar, is marked with damping oil between damping body and adjustment bar, is formed
One passive type vibration insulating system feeds back one group of control force after the vibration in knife bar front end and middle section is passed to vibration insulating system, control
Knife vibration of bar, achievees the purpose that vibration damping.
D, in damping shock absorber, due to being the long cone of both ends support, its vibration form is mainly that the radial direction of single order is flat
Dynamic and second order length direction is swung, and is just matched with the single order of cantilever beam pattern knife bar and second_mode；It is big by taper
It is small to can adjust its position of centre of gravity, it is combined with the adjustment of both ends elastomer rigidity size and damping oil, can preferably be fitted knife
The single order and second order formation frequency and the vibration shape of bar control the vibration of knife bar resonance zone, are decreased to it minimum.
E, cutter tip is set on the front supports of knife bar front end, and cutting force makes knife bar generate vibration, by built-in resistance
Buddhist nun's damper reduces to control；The vibration of its low order influences maximum to cutting, and single order vibration front end amplitude is maximum, with long cone
Damping body is as quality of assistance, and center of gravity Forward, bigger to the control force of front end, effectiveness in vibration suppression is more preferable.
Compared with prior art, the utility model has the following beneficial effects:
(1) mass block inside damping shock absorber and its both ends elastomeric components form a passive type vibration insulating system, resistance
The support block assembly at Buddhist nun's damper both ends is respectively arranged on the front end and middle section of cutter bar body, and the vibration in knife bar front end and middle section is passed
One group of control force is fed back after passing passive type vibration insulating system, can control the vibration of cutter bar body, to achieve the purpose that vibration damping；
(2) damping shock absorber and the hollow structure of knife bar front end are set as cone, weaken the hollow shadow to arbor stiffness
It rings, keeps the high rigidity of knife bar, improve intrinsic frequency.Compared to general cylinder pore structure, the root wall thickness of conical bore is thicker, institute
It is higher with integral rigidity, when tool nose is identical in quality, improve the intrinsic frequency of knife bar.
(3) damping vibration absorbing cutter bar can efficiently realize that stablizing when knife bar length and knife bar diameter are bigger is cut, and slow down not
With vibration generated during operating condition, has the advantages that stability is high, precision is high, may be used on lathe as lathe tool
Bar, rotation class cutter in be used as milling knife bar, rotation class cutter in be used as the fields such as boring knife bar；
(4) cutter head is installed on knife bar, in actual use by weakening the vibration of cutter head, to improve cutter
The precision of work.
Detailed description of the invention
It, below will be to required in embodiment description for the clearer technical solution for illustrating the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also obtain according to these attached drawings
Obtain other accompanying drawings；
Fig. 1 is the whole schematic cross-sectional view of embodiment one；
Fig. 2 is enlarged diagram of the Fig. 1 at A；
Fig. 3 is enlarged diagram of the Fig. 1 at B；
Fig. 4 is enlarged diagram of the Fig. 1 at C；
Fig. 5 is the schematic diagram of preceding elastomer and front support block connection type；
Fig. 6 is the schematic diagram of rear elastomer and rear end supporting block connection type；
Fig. 7 is the whole schematic cross-sectional view of embodiment two；
Fig. 8 is the whole schematic cross-sectional view of embodiment three.
Specific embodiment
The technical scheme in the embodiment of the utility model is clearly and completely illustrated with reference to the accompanying drawing.
Embodiment one
As shown in Figure 1, a kind of damping shock absorber, comprising:
Adjust bar 6；
Mass block 3, the mass block 3 are sheathed on the outside of the adjustment bar 6 by clearance fit；
Block assembly 2 is supported, the support block assembly 2 and the both ends for adjusting bar 6 pass through thread fiting mode respectively and connect
It connects；
Elastomeric components 1, the elastomeric components 1 be sheathed on the outside of the adjustment bar 6 and be placed in the mass block 3 with
Between the support block assembly 2.
Block assembly 2, elastomeric components 1, mass block 3 is supported to be tightly connected, the gap between mass block 3 and adjustment bar 6 is filled out
Fill damping oil.
In the present embodiment, plastic housing is cooperated by the step of support block assembly and elastomeric components, and then realizes knife bar
Axially and radially have biggish damping effect.
Further, as shown in figure 4, the inside of the mass block 3 is offered along its axial direction adjusts the outer of bar 6 with described
The compatible through-hole 30 of portion's shape, adjustment bar 6 pass through through-hole 30, and between being equipped between the inner wall of mass block 3 and the adjustment bar 6
Gap.
It should be noted that by setting through-hole 30, it is intended that filling damping oil using through-hole 30.
Further, as shown in Figure 5, Figure 6, the support block assembly 2 includes front support block 4 and rear end supporting block 5, front end
Supporting block 4, rear end supporting block 5 are individually fixed in the front and rear ends of adjustment bar 6.The rear end of the front support block 4 is along its axial direction
Direction is convexly equipped with step a41, and the front end of the rear end supporting block 5 is convexly equipped with step b51 along its axial direction.
Further, as shown in Figure 5, Figure 6, the elastomeric components 1 include preceding elastomer 7 and rear elastomer 8, preceding elastomer
7 are set between front support block 4 and mass block 3, and rear elastomer 8 is set between mass block 3 and rear end supporting block 5.The preceding elasticity
There is step c71 compatible with the step a41 in the front end of body 7 along its axial direction indent；The rear end of the rear elastomer 8
There is step d81 compatible with the step b51 along its axial direction indent.
In the present embodiment, it is staged snap fit by setting front support block 4 and preceding elastomer 7, realizes knife
Bar can be two-way, i.e., simultaneously from realization cushioning effect is axially and radially gone, to improve machining accuracy, and structure is simple, processing
Easy and convenient assembling, stability are high.
Further, between front support block 4 and preceding elastomer 7, between preceding elastomer 7 and the mass block 3, mass block 3
O-ring seal is respectively arranged between rear elastomer 8, between rear elastomer 8 and rear end supporting block 5.Front support block 4, rear end branch
Bracer 5 is threadedly coupled with the front and rear ends of adjustment bar 6 respectively, is applied by front support block 4, rear end supporting block 5 to mass block 3
Add axial pressing force, make to seal at each O-ring seal, guarantees that mass block 3 and the damping oil adjusted between bar 6 will not leak.
Further, as shown in Figure 2 and Figure 3, the front end and rear end of the mass block 3 offer counterbore a31 and counterbore b32 respectively, and
Counterbore a31 and counterbore b32 forms annular space a72 and annular between corresponding preceding elastomer 7 and rear elastomer 8 respectively
Space b82.
In the present embodiment, by the way that annular space a72 and annular space b82 is arranged, its object is to utilize annular space
A72 and annular space b82, is filled damping oil to it.
In the present embodiment, mass block 3 is the cone that point diameter is big, rear end diameter is small, its center of gravity is made to move forward.Quality
Block 3 is high density material manufacture, and shape is cone.The quality of mass block 3 is higher, and effectiveness in vibration suppression is better.
Preceding elastomer 7 and rear elastomer 8 are made of vibration isolation rubber, are provided simultaneously with the effect of spring and damping, preceding elastomer 7
Size is big, rigidity is low, and rear 8 size of elastomer is small, rigidity is high.Correspondingly, the size of front support block 4 is greater than rear end supporting block 5
Size.
Embodiment two
As shown in fig. 7, wherein using attached drawing mark corresponding with embodiment one with component identical or corresponding in embodiment one
Note hereafter only describes the distinctive points with embodiment one for simplicity.The difference of the embodiment two and embodiment one exists
In:
A kind of damping vibration absorbing cutter bar, including cutter bar body 9 are also disclosed in the present embodiment, further include described in embodiment one
A kind of damping shock absorber, the damping shock absorber are built in the inside of the cutter bar body 9, and the inner wall of the cutter bar body 9 is along its axis
The cylindrical hole a91 being connected, conical bore 92, cylindrical hole b93 and cylindrical hole c94, the circle are successively offered from after going to direction
Post holes a91 is matched with the front support block 4 and preceding elastomer 7, and conical bore 92 is matched with the mass block 3, cylindrical hole
B93 is matched with the rear end supporting block 5 and rear elastomer 8.
Further, as shown in figure 5, the cylindrical hole a91, conical bore 92, cylindrical hole b93 and cylindrical hole c94 inner wall it
Between smoothly transit setting.
Further, as shown in figure 5, the front inner diameter size of the conical bore 92 is greater than its rear end internal diameter, and cylinder
The internal diameter of hole c94 is less than the internal diameter of cylindrical hole b93.
In the present embodiment, by the way that the damping shock absorber in embodiment one to be placed in knife bar, it can be used for slowing down different works
Vibration caused by during condition, cutter bar body 9 and mass block 3 are cone, and center of gravity is caused to move forward, the enhancing of knife bar rigidity, and
And preceding 7 rigidity of elastomer is less than rear 8 rigidity of elastomer, the movement pattern of mass block 3 is the Secondary movement of translation and swing, simultaneously
The second order vibration of cutter bar body 9 is controlled, the front end to cutter bar body 9 and middle section apply different directions respectively and the control of size is made
Firmly；And it is bigger to the active force of front support block 4.
It is noted that the damping vibration absorbing cutter bar can efficiently realize stabilization when knife bar length and knife bar diameter are bigger
Cutting, may be used on lathe as turning tool rod, rotation class cutter in be used as milling knife bar, rotation class cutter in be used as boring knife
The fields such as bar.
Embodiment three
As shown in figure 8, wherein using attached drawing mark corresponding with embodiment one with component identical or corresponding in embodiment one
Note hereafter only describes the distinctive points with embodiment one for simplicity.The difference of the embodiment three and embodiment one exists
In:
A kind of damping vibration attenuation cutter, including cutter head 10 are also disclosed in the present embodiment, further include one described in embodiment two
Kind of damping vibration absorbing cutter bar, the cutter head 10 are installed on the front support block 4, at the same with before the hollow structure of cutter bar body 9
End is fixed.
In the present embodiment, cutter head 10 is installed on equipped on the knife bar in embodiment two, is led in actual use
The vibration for weakening cutter head 10 is crossed, to improve the precision of cutter work.
In the description of the present invention, it should be understood that the orientation or position of the instructions such as term " front and back ", " left and right "
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is that the equipment of indication or suggestion meaning or component must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to utility model.
Certainly in the technical scheme, those skilled in the art is it should be understood that term " one " is interpreted as " at least
One " or " one or more ", i.e., in one embodiment, the quantity of an element can be one, and in other implementation
In example, the quantity of the element can be it is multiple, term " one " should not be understood as the limitation to quantity.
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, the variation that anyone skilled in the art can readily occur under the technical clarification of the utility model
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with right
Subject to the protection scope of claim.
Claims (10)
1. a kind of damping shock absorber characterized by comprising
It adjusts bar (6)；
Mass block (3), the mass block (3) are sheathed on the outside of adjustment bar (6) by clearance fit；
It supports block assembly (2), support block assembly (2) is set to the front and rear ends of adjustment bar (6)；
Elastomeric components (1), the elastomeric components (1) are sheathed on the outside of adjustment bar (6) and are placed in the mass block
(3) between the support block assembly (2)；
The support block assembly (2), elastomeric components (1), mass block (3) are tightly connected, the mass block (3) and adjustment bar
(6) the gap filling damping oil between.
2. a kind of damping shock absorber according to claim 1, which is characterized in that the inside of the mass block (3) is along its axis
Through-hole (30) compatible with the adjustment outer shape of bar (6) is offered to direction, the adjustment bar (6) passes through described logical
Hole (30), and gap is equipped between the inner wall of the mass block (3) and adjustment bar (6).
3. a kind of damping shock absorber according to claim 1, which is characterized in that the support block assembly (2) includes front end
Supporting block (4) and rear end supporting block (5), front support block (4), rear end supporting block (5) are individually fixed in adjustment bar (6)
Front and rear ends.
4. a kind of damping shock absorber according to claim 3, which is characterized in that the elastomeric components (1) include preceding bullet
Property body (7) and rear elastomer (8), preceding elastomer (7) is set between the front support block (4) and the mass block (3), rear bullet
Property body (8) be set between the mass block (3) and the rear end supporting block (5).
5. a kind of damping shock absorber according to claim 4, which is characterized in that the front support block (4) and it is described before
Between elastomer (7), between the preceding elastomer (7) and the mass block (3), the mass block (3) and it is described after elastomer
(8) sealing structure is equipped between, between the rear elastomer (8) and the rear end supporting block (5).
6. a kind of damping shock absorber according to claim 5, which is characterized in that the sealing structure is O-ring seal.
7. a kind of damping shock absorber according to claim 3, which is characterized in that the front support block (4), rear end support
Block (5) is threadedly coupled with the front and rear ends of adjustment bar (6) respectively.
8. a kind of damping shock absorber according to claim 4, which is characterized in that the mass block (3) be point diameter it is big,
The small cone of rear end diameter；
The size of the preceding elastomer (7) is greater than the size of the rear elastomer (8), and the rigidity of the preceding elastomer (7) is big
The rigidity of elastomer (8) after described；
The size of the front support block (4) is greater than the size of the rear end supporting block (5).
9. a kind of damping vibration absorbing cutter bar, including cutter bar body (9), it is characterised in that: further include that the claims 1 to 8 are any
A kind of damping shock absorber described in, cutter bar body (9) front end, which is equipped with, to match with the damping shock absorber outer profile
Hollow structure, the damping shock absorber is built in the hollow structure of the cutter bar body (9) front end, and the damping shock absorber
Both ends be supported in the cutter bar body (9) front end hollow structure both ends.
10. a kind of damping vibration attenuation cutter, including cutter head (10), which is characterized in that further include one kind described in the claims 9
Damping vibration absorbing cutter bar, the cutter head (10) are installed on the support block assembly (2) of the cutter bar body (9) front end, at the same with institute
The hollow structure front end for stating cutter bar body (9) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177324.0U CN209614977U (en) | 2019-01-31 | 2019-01-31 | The knife bar and cutter of damping shock absorber and the application damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177324.0U CN209614977U (en) | 2019-01-31 | 2019-01-31 | The knife bar and cutter of damping shock absorber and the application damping shock absorber |
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| CN209614977U true CN209614977U (en) | 2019-11-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732393A (en) * | 2019-01-31 | 2019-05-10 | 松德刀具（长兴）科技有限公司 | A kind of damping shock absorber and knife bar and cutter using the damping shock absorber |
| CN112247171A (en) * | 2020-09-28 | 2021-01-22 | 株洲钻石切削刀具股份有限公司 | Frequency-adjustable passive vibration-damping cutter bar and vibration-damping cutter |
| CN116833437A (en) * | 2023-07-14 | 2023-10-03 | 松德刀具（长兴）科技有限公司 | Antimagnetic vibration damping cutter for processing deep holes of permanent magnet parts |
-
2019
- 2019-01-31 CN CN201920177324.0U patent/CN209614977U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732393A (en) * | 2019-01-31 | 2019-05-10 | 松德刀具（长兴）科技有限公司 | A kind of damping shock absorber and knife bar and cutter using the damping shock absorber |
| CN112247171A (en) * | 2020-09-28 | 2021-01-22 | 株洲钻石切削刀具股份有限公司 | Frequency-adjustable passive vibration-damping cutter bar and vibration-damping cutter |
| CN112247171B (en) * | 2020-09-28 | 2022-03-11 | 株洲钻石切削刀具股份有限公司 | Frequency-adjustable passive vibration-damping cutter bar and vibration-damping cutter |
| CN116833437A (en) * | 2023-07-14 | 2023-10-03 | 松德刀具（长兴）科技有限公司 | Antimagnetic vibration damping cutter for processing deep holes of permanent magnet parts |
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