JP6324233B2 - 回転体の防振構造 - Google Patents
回転体の防振構造 Download PDFInfo
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- JP6324233B2 JP6324233B2 JP2014130541A JP2014130541A JP6324233B2 JP 6324233 B2 JP6324233 B2 JP 6324233B2 JP 2014130541 A JP2014130541 A JP 2014130541A JP 2014130541 A JP2014130541 A JP 2014130541A JP 6324233 B2 JP6324233 B2 JP 6324233B2
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- 238000002955 isolation Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 12
- 239000003566 sealing material Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
- B23B29/022—Boring bars with vibration reducing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/002—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor with vibration damping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/1201—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon for damping of axial or radial, i.e. non-torsional vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
- F16F15/126—Elastomeric springs consisting of at least one annular element surrounding the axis of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2229/00—Details of boring bars or boring heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/04—Balancing rotating components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/16—Damping of vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/70—Drills with vibration suppressing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/003—Milling-cutters with vibration suppressing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D2277/00—Reaming tools
- B23D2277/10—Reaming tools comprising means for damping of vibration, i.e. for reduction of chatter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
- B23Q11/0039—Arrangements for preventing or isolating vibrations in parts of the machine by changing the natural frequency of the system or by continuously changing the frequency of the force which causes the vibration
Description
例えば、長手方向に隣接する軸部材どうしの間で相対移動が生じようとする場合に、まず何れか一方の軸部材がその外側に位置する筒部材を押圧する。ただし、この押圧された筒部材は、もう一方の軸部材によって移動を阻止される。よって、隣接する軸部材どうしの相対移動は結果的に抑えられることとなる。この際、軸部材と筒部材との相対位置が僅かに変化し、両部材間には摩擦が生じる。この摩擦により、回転体の振動が有効に吸収される。
〔第1実施形態〕
図1〜図3に、本発明による防振構造を備えた工具ホルダ1(回転体の一例)を示す。
この工具ホルダ1は中ぐり加工用のものであり、工具を装着する円筒形長尺状の本体2と、工作機械の主軸(図示せず)に把持されるテーパ状のシャンク部3とを有する。
これら弾性シール材24,25は、軸部材20や筒部材22の間にあって所定の弾性圧縮が加えられており、工具ホルダ1が静止している状態や、振動なくワークを切削加工している状態では、各軸部材20や筒部材22が互いに相対移動せず、所定の位置関係が保持される。よって、この通常状態では、軸孔8に配置して部材どうしは接触することはない。
尚、図1においては、軸部材20や筒部材22の外面側及び内面側に二つの弾性シール材24,25を配置した例を示しているが、この他に、軸部材20や筒部材22の厚みよりもやや厚い一つの弾性シール材を用いてもよい。
本発明に係る第2実施形態を図4に示す。ここでは、筒部材22の径方向の厚みが軸部材20の径方向の厚みよりも大きく設定されている。このように構成することで、軸部材20の質量に対する筒部材22の質量が相対的に増大する。よって、筒部材22の慣性モーメントがより大きくなり、筒部材22の回転状態が安定する結果、工具ホルダ1の振動吸収機能が強化される。
本実施形態では、図5に示すように、長手方向において均等長さの四つの軸部材20を配置すると共に、その外側に均等長さの三つの筒部材22を配置している。ここでは、筒部材22のうち中央位置の筒部材22Bの厚みを他の筒部材22A,22Cの厚みよりも大きく設定している。軸部材20については、両端の20A,20Dの厚みは一定であるが、中央側の20B,20Cの厚みは長手方向の中央側が小さくなるよう設定している。工具ホルダ1に振動が生じる場合には、長手方向中央部の位置で変位量が大きくなる。よって、当該領域に位置する筒部材22Bの慣性モーメントを高めることで、振動吸収機能を向上させている。
本実施形態では、図6に示すように、軸部材20の外周側に2層の筒部材22、32を配置している。内側の筒部材22及び外側の筒部材32についても、長手方向に隣接する筒部材22どうしの境界位置23と、長手方向に隣接する筒部材32どうしの境界位置33とを長手方向に沿って異ならせている。尚、このような境界位置に差異を設けるのは、あくまでも径方向に隣接する部材の境界位置についてであって、図6に示したように、長手方向中央にある軸部材20どうしの境界位置と、外側の筒部材32どうしの境界位置とが長手方向に沿って同じ位置にあることは特に問題はない。
上記実施形態では、回転体として工具ホルダ1を用いる例を示したが、図7に示すように、回転体は工具ホルダ等が接続される工作機械の主軸50であってもよい。図示しない工具ホルダ等は主軸50の一方(例えば図7の右側)に接続される。
主軸50は、ハウジング60の内側に配置され、主軸本体51の内部に円筒状の中空部52を有する。この中空部52には、中心側より、クーラントパイプ53、軸部材20、筒部材22が同軸芯状に配置される。
(1)上記実施形態では、長手方向の部材(軸部材20、筒部材22,32)間の内周側端及び外周側端の両方に弾性シール材24,25,34を設ける例を示したが、部材どうしの非接触状態が維持できる場合には、弾性シール材は内周側端及び外周側端の一方のみに設けてもよい。また、弾性シール材に代えて、各部材どうしの隙間に潤滑剤や粘性材料等を介在させて部材どうしが直に接触しないよう構成してもよい。
2 本体
7 中空部
9 栓部材
20 軸部材
21,23,33 境界位置
22、32 筒部材
24,25,34 弾性シール材(シール部材)
50 工作機械の主軸(回転体)
51 主軸本体(本体)
X 回転軸芯
Claims (2)
- 回転体の本体の内部に、
前記回転体の回転軸芯の長手方向に複数配置した軸部材と、
前記軸部材に外挿し、前記回転軸芯と同軸に前記回転軸芯の長手方向に複数配置する少なくとも一層の筒部材と、を備え、
前記本体と前記軸部材と前記筒部材とは互いに嵌合され、
前記長手方向に隣接する前記軸部材どうしの境界位置と、前記長手方向に隣接する前記筒部材どうしの境界位置とが、前記長手方向に沿って異なる位置となるように構成してある回転体の防振構造。 - 前記筒部材の総数が、前記軸部材の総数よりも少なく設定されている請求項1に記載の回転体の防振構造。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014130541A JP6324233B2 (ja) | 2014-06-25 | 2014-06-25 | 回転体の防振構造 |
PCT/JP2015/065552 WO2015198792A1 (ja) | 2014-06-25 | 2015-05-29 | 回転体の防振構造 |
EP15811899.2A EP3162498A4 (en) | 2014-06-25 | 2015-05-29 | Vibration-proof structure for rotating body |
CN201580034057.6A CN106457497B (zh) | 2014-06-25 | 2015-05-29 | 旋转体的防振结构 |
US15/320,988 US9889506B2 (en) | 2014-06-25 | 2015-05-29 | Vibration-proof structure of rotating body |
KR1020167032883A KR102266670B1 (ko) | 2014-06-25 | 2015-05-29 | 회전체의 방진 구조 |
TW104119269A TWI656927B (zh) | 2014-06-25 | 2015-06-15 | 旋轉體的防振構造 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014130541A JP6324233B2 (ja) | 2014-06-25 | 2014-06-25 | 回転体の防振構造 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016007677A JP2016007677A (ja) | 2016-01-18 |
JP6324233B2 true JP6324233B2 (ja) | 2018-05-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2014130541A Active JP6324233B2 (ja) | 2014-06-25 | 2014-06-25 | 回転体の防振構造 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9889506B2 (ja) |
EP (1) | EP3162498A4 (ja) |
JP (1) | JP6324233B2 (ja) |
KR (1) | KR102266670B1 (ja) |
CN (1) | CN106457497B (ja) |
TW (1) | TWI656927B (ja) |
WO (1) | WO2015198792A1 (ja) |
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US10105768B2 (en) * | 2016-07-05 | 2018-10-23 | Ching-Ting Chen | Cutter holder with vibration resistant structure |
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KR101998163B1 (ko) * | 2017-10-24 | 2019-07-10 | 한국생산기술연구원 | 웨이트부재를 포함하는 회전식 가공공구 |
CN107931680B (zh) * | 2017-11-29 | 2019-07-02 | 浙江易立刀具有限公司 | 一种焊刃防震粗铣刀 |
US10179367B1 (en) * | 2018-02-07 | 2019-01-15 | Kun-Chi Lo | Damping arbor |
WO2020129957A1 (ja) * | 2018-12-18 | 2020-06-25 | 京セラ株式会社 | ホルダ、切削工具及び切削加工物の製造方法 |
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CN112974880A (zh) * | 2021-02-23 | 2021-06-18 | 江苏师范大学 | 一种带有可插拔吸振器的镗杆 |
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US11786977B2 (en) | 2021-09-07 | 2023-10-17 | Iscar, Ltd. | Tool holder having anti-vibration arrangement with two masses and cutting tool provided with tool holder |
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WO2016000870A1 (en) * | 2014-06-30 | 2016-01-07 | Walter Ag | Anti-vibration damper |
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US20170197251A1 (en) | 2017-07-13 |
CN106457497A (zh) | 2017-02-22 |
US9889506B2 (en) | 2018-02-13 |
KR102266670B1 (ko) | 2021-06-21 |
EP3162498A1 (en) | 2017-05-03 |
TWI656927B (zh) | 2019-04-21 |
WO2015198792A1 (ja) | 2015-12-30 |
TW201615309A (zh) | 2016-05-01 |
JP2016007677A (ja) | 2016-01-18 |
KR20170021235A (ko) | 2017-02-27 |
EP3162498A4 (en) | 2018-04-25 |
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