WO1998015879A1 - Maschine zur spanenden bearbeitung von werkstücken - Google Patents
Maschine zur spanenden bearbeitung von werkstücken Download PDFInfo
- Publication number
- WO1998015879A1 WO1998015879A1 PCT/EP1997/005564 EP9705564W WO9815879A1 WO 1998015879 A1 WO1998015879 A1 WO 1998015879A1 EP 9705564 W EP9705564 W EP 9705564W WO 9815879 A1 WO9815879 A1 WO 9815879A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unbalance
- tool
- machine
- sensor
- workpiece
- Prior art date
Links
Classifications
-
- 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
- F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
- F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37349—Unbalance of tool or tool holder
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45145—Milling
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49177—Runout, eccentricity, unbalance of tool or workpiece
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
Definitions
- the invention relates to a machine for machining workpieces according to the preamble of claim 1, a compensation unit for such a machine and a corresponding method for machining workpieces.
- Such machines are, for example, milling machines with a rotating milling head, drilling machines, grinding machines and the like. the like , or lathes.
- CNC numerically controlled
- the unbalance be it a rotating tool, such as a milling head, or a rotating workpiece, such as a shaft to be machined or the like.
- a rotating milling head shows an imbalance, depending on the size of the imbalance and the speed, this can result in the milling head being deflected in the circumferential direction and then having a larger milling circumference than intended.
- This can be counteracted by using high-precision (balanced) milling heads and by adjusting the holder of the milling head, but this unbalance can never be completely avoided.
- an imbalance on the milling head or the holder can occur due to damage or wear, which necessitates early replacement of the tool or readjustment. Both are relatively expensive and labor intensive.
- Imbalances also have a negative effect on turned workpieces. If, for example, rapidly rotating rotating bodies such as shafts or the like show an imbalance, this can lead to premature bearing wear. Such components are therefore usually subjected to a balancing process.
- the rotating part is clamped in a balancing device and set in rotation, and any unbalance with regard to its size and position (rotational position) is determined via unbalance sensors, for example force sensors on the bearing.
- the rotating part is then braked and material is either removed or applied at a point corresponding to the imbalance; it is also possible to remove material at one point to compensate for the unbalance, to apply at another point.
- These processes are repeated, ie the rotating part is rotated again to determine an imbalance and then to compensate for the imbalance decelerated until the resulting unbalance falls below a tolerable limit.
- the invention is therefore based on the object of designing a machine of the type mentioned at the outset and a corresponding method for machining workpieces in such a way that any imbalances in a rotary element can be compensated in a simple manner.
- an unbalance of a rotating workpiece or a rotating tool is detected by means of an unbalance sensor, and the feed drive, which realizes the relative movement between the tool and the workpiece, is controlled as a function of the unbalance.
- the unbalance is detected, for example, together with the angular position of the rotating element due to the unbalanced force on the holder of the rotating element or due to unbalanced forces which cause the rotating element to deform, an optical sensor or, for example, an induction sensor being able to be used.
- a predetermined position control of the relative movement between the tool and the workpiece can thus be corrected on the basis of the detection of the imbalance.
- the invention thus proposes to detect the unbalance and the associated "virtual enlargement" of the milling head and to take this into account in position control.
- the invention goes one step further by consciously presupposing that there is still a "residual unbalance" in the tool which is a virtual enlargement of the Tool caused. The machine is then controlled as if a slightly larger milling head were used.
- the principle according to the invention of controlling the feed depending on a detected unbalance can also be used very effectively in a lathe.
- the lathe tool is usually slidably mounted in relation to the rotating workpiece, and in the course of the highly developed drive technology, for example using linear motors, very rapid displacements of the lathe tool can also be achieved, for example in the case of non-circular lathes.
- a fast feed drive for the turning tool is now coupled to an unbalance sensor, and, depending on the rotational position of the unbalance, material is removed from the workpiece according to the rotational position of the unbalance, so that the workpiece can be balanced immediately on the lathe.
- a look-up table can be created for each tool or for each type of tool, for example, which indicates unbalance deflections ("virtual magnification") as a function of predetermined unbalances.
- This lookup table can be determined once and for all and then stored, for example, in the work computer of a numerically controlled machine. During operation of the machine, the control then makes reference to the look-up table, and for each unbalance determined by the unbalance sensor, the corresponding unbalance deflection is called up and taken into account in the position control.
- the unbalance deflections are relatively small deflections, the unbalance deflection should be linearly dependent on the unbalanced mass and quadratically on the speed. It is therefore possible to specify an approximation formula for the unbalance deflection depending on these parameters. Of course, it is also possible to use a combination of an empirically created look-up table together with an approximation algorithm, for example with the speed as a parameter.
- a preferred embodiment of the invention is a compensation unit for a numerically controlled machine tool with connections for the imbalance sensor, a rotation angle and / or speed sensor and a memory for storing the look-up table and / or the algorithm for an approximation formula, a compensation computer for correcting signals for position control in of the machine.
- said compensation unit can be used as an interface card for the workstation of the machine ⁇ generating plant, wherein the data and Si- Signal formats are adapted to the standard of the work computer.
- Fig. 3 is a schematic dart position of an automatic lathe.
- a numerically controlled milling machine comprises a CNC system consisting of an operating computer 100 and a data carrier 110.
- the operating computer 100 determines position control data from the operating data in accordance with a target control and transmits this data via an interface 120 to a drive computer 130.
- the drive computer 130 controls For example, a linear drive 50 of the milling machine 90 for displacing a workpiece 10. Via a further interface 140, position data of a position sensor (not shown) are fed back to the drive computer 130.
- This essentially serves for a target-actual control of the position, details of this control not being explained further here, since these are generally known.
- the milling machine 90 further comprises a rotating milling head 40 which is received in a holder 30.
- An unbalance sensor 60 is assigned to the holder 30 or a rotary drive 20 of the milling machine 90.
- the unbalance sensor 60 measures, for example, the unbalance forces occurring on the holder 30 and sends corresponding signals to a compensation computer 150.
- the compensation computer evaluates the signals from the unbalance sensor 60 and outputs corresponding control signals to the work computer 130, which in turn corrects the position control for the feed drive 50 accordingly.
- the compensation unit 150 is shown separately from the drive computer 130; However, it is of course also possible to integrate the compensation unit 150 directly into the drive computer 130. Furthermore, it should be mentioned that the milling head can also be slidably arranged, as indicated by the double arrow next to the milling head. Also, the feed drive 50 normally not only causes linear movement in one direction, but in one plane, i.e. a movement perpendicular to the plane of the drawing in FIG. 1 is also a movement in the feed direction.
- All these movements are to be understood here as a movement in the feed direction, and all these movements can be corrected by the compensation computer 50 on the basis of the signals from the sensor 60.
- a rotational movement of the workpiece 10 in relation to the milling head for milling a specific contour is also a feed movement in this sense.
- Fig. 2 shows a detail of the milling head to explain the unbalance deflection.
- the milling head 40 is clamped in the holder 30 with a bearing or the like, and if the milling head 40 shows no imbalance, it is in the position shown by dashed lines. However, if there is an imbalance, the milling head is radially deflected by an unbalance deflection ⁇ , as shown by the solid line (only the deflection to the right is shown in FIG. 2; of course, this deflection also occurs in all others when the milling head is rotated radial directions).
- the unbalance deflection ⁇ of the milling head 40 depends, for example, on the size of the unbalance (corresponding to the unbalanced mass), the tool material, the tool shape and the speed.
- the unbalance is preferably measured by means of an unbalance sensor 60 on the bearing or the holder 30 for the milling head 40.
- a compensation computer determines the corresponding unbalance deflection ⁇ from the unbalance force and the speed, which is determined by a rotation angle or speed sensor 70, and compensates the position control of the drive computer accordingly.
- the following procedure can be used, for example.
- a precision tool is assigned a precisely defined unbalance, and the resulting unbalance balance deflection is determined.
- This unbalance deflection ⁇ can then be determined directly, for example optically, or by machining a sample workpiece, in which case the deviation between the set removal and the additional removal can be determined on the sample workpiece due to the unbalance deflection.
- This measurement is performed for various well-defined imbalances, and a look-up table is created in this way. As mentioned, speeds, etc. can also be included in this lookup table.
- Another parameter that can influence the unbalance deflection is, for example, the material to be processed; the unbalance deflection is smaller in the case of a relatively hard material, and possibly larger in the case of a relatively resilient material.
- FIG. 3 schematically shows a lathe in which a shaft 10 to be machined is clamped in holders 30.
- the shaft 10 is driven by a rotary drive 20, and the speed and the angular position are determined by a rotary sensor 70, which is only shown schematically.
- a rotary chisel 40 is used to machine the shaft, which is slidably mounted on a feed drive 50 (in the plane of the drawing in FIG. 3).
- Unbalance sensors 60 are the brackets 30 or. Bearings assigned to the lathe and determine the unbalance forces caused by the shaft. Together with the data from the unbalance sensors and the rotation angle or speed sensor, the position of the unbalance can be determined by a computer in a manner known per se. The computer continues to determine from the specific weight of the material to be processed, the size of the workpiece etc. and the sensor signals, the location and the amount of the material to be removed by the turning tool 40 in order to compensate for the imbalance.
- the turning tool 40 is always moved towards the workpiece 10 when the workpiece is in an area of rotation position which corresponds to the unbalance to be compensated, i.e. in extreme cases according to the rotational frequency of the workpiece 10.
- Such a fast feed is now possible without problems with linear drives, for example, which are already used in non-circular lathes.
- the material is removed essentially simultaneously with the detection of the unbalance, as a result of which unnecessary operations such as braking the shaft etc. are avoided.
- the measurements and the approach of the turning tool are preferably carried out at different times in order to largely exclude influences of the machining force acting on the shaft by the tool 40 on the sensors.
- the control structure for the lathe shown in FIG. 3 corresponds essentially to the structure of FIG. 1, the signals from sensors 70 and 60 being correspondingly output to a compensation computer 150, which in this context can also be referred to as a balancing computer.
- This computer 150 then controls the feed 50 of the lathe in accordance with the sensor signals and the preset signals of the operating computer 100 etc.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automatic Control Of Machine Tools (AREA)
- Testing Of Balance (AREA)
- Numerical Control (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980704309A KR19990072016A (ko) | 1996-10-09 | 1997-10-09 | 공작물절단가공기 |
US09/077,783 US6065338A (en) | 1996-10-09 | 1997-10-09 | Machine for machining workpieces |
JP51719298A JP2002515832A (ja) | 1996-10-09 | 1997-10-09 | ワークを切削加工する機械 |
EP97910427A EP0865632A1 (de) | 1996-10-09 | 1997-10-09 | Maschine zur spanenden bearbeitung von werkstücken |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19641494A DE19641494A1 (de) | 1996-10-09 | 1996-10-09 | Maschine zur spanenden Bearbeitung von Werkstücken |
DE19641494.6 | 1996-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998015879A1 true WO1998015879A1 (de) | 1998-04-16 |
Family
ID=7808195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/005564 WO1998015879A1 (de) | 1996-10-09 | 1997-10-09 | Maschine zur spanenden bearbeitung von werkstücken |
Country Status (6)
Country | Link |
---|---|
US (1) | US6065338A (de) |
EP (1) | EP0865632A1 (de) |
JP (1) | JP2002515832A (de) |
KR (1) | KR19990072016A (de) |
DE (1) | DE19641494A1 (de) |
WO (1) | WO1998015879A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7155973B2 (en) | 2003-07-08 | 2007-01-02 | Stephen William Dyer | Method and apparatus for balancing |
DE10023973A1 (de) * | 2000-05-16 | 2001-11-29 | Daimler Chrysler Ag | Aktive Spindellagerung |
US7392701B2 (en) | 2000-06-19 | 2008-07-01 | Judith Ann Turner, legal representative | Balancing machine |
JP4351379B2 (ja) * | 2000-11-02 | 2009-10-28 | 村田機械株式会社 | 工作機械 |
US6766697B1 (en) | 2000-12-06 | 2004-07-27 | Bearings Plus, Inc. | Hydrodynamic bearings having strain sensors |
JP2004213350A (ja) * | 2002-12-27 | 2004-07-29 | Seiko Epson Corp | 力覚提示装置及び画像補正方法 |
WO2005088269A1 (en) | 2004-03-15 | 2005-09-22 | Anca Pty Ltd | Computation of imbalance in rotatably mounted object in a motion control system |
DE102007001620B4 (de) * | 2007-01-04 | 2009-08-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Betrieb einer Bearbeitungsmaschine sowie Werkzeughalterung |
JP5052198B2 (ja) | 2007-05-01 | 2012-10-17 | 株式会社松浦機械製作所 | ワーク及び又は工具の工作段階における振動状態測定方法 |
JP5056796B2 (ja) * | 2009-05-28 | 2012-10-24 | アイシン・エィ・ダブリュ株式会社 | 工作機械における主軸の動剛性測定装置及び動剛性測定方法 |
EP2574820B1 (de) | 2011-09-30 | 2014-04-16 | Siemens Aktiengesellschaft | Bearbeitungsmaschine mit Schwingungskompensation beweglicher mechanischer Strukturen |
CN102501177B (zh) * | 2011-11-04 | 2014-03-26 | 厦门大学 | 一种精密数控磨床平衡装置及其平衡方法 |
ES2769304T3 (es) * | 2012-04-05 | 2020-06-25 | Fidia Spa | Dispositivo para corrección de errores para máquinas CNC |
JP5792271B2 (ja) | 2013-12-19 | 2015-10-07 | ファナック株式会社 | ワークによる変位誤差を補正する機能を備えた数値制御装置 |
JP6322498B2 (ja) * | 2014-07-02 | 2018-05-09 | 東芝機械株式会社 | 立旋盤の調心システムおよび方法 |
WO2016039018A1 (ja) * | 2014-09-09 | 2016-03-17 | 株式会社Ihi | 中空回転シャフト仕上げ方法及び中空回転シャフト |
CN104199381B (zh) * | 2014-09-19 | 2017-04-26 | 深圳市英威腾电气股份有限公司 | 一种数控系统的刀补控制方法及装置 |
CN106794564B (zh) | 2015-06-22 | 2019-02-19 | 伊雷克托科学工业股份有限公司 | 多轴工具机及其控制方法 |
US10605690B2 (en) * | 2016-11-01 | 2020-03-31 | Dominion Technologies Group, Inc. | Weight splitting control system |
DE102017206931A1 (de) * | 2017-04-25 | 2018-10-25 | Dr. Johannes Heidenhain Gmbh | Verfahren zur Kompensation der Fräserabdrängung |
DE102017117059A1 (de) * | 2017-07-26 | 2019-01-31 | Franz Haimer Maschinenbau Kg | Werkzeugmaschinensystem mit automatischer wuchtprotokollverwertung |
DE102017125889A1 (de) | 2017-11-06 | 2019-05-09 | Thyssenkrupp Ag | Verfahren und Vorrichtung zum Auswuchten |
DE102019104420A1 (de) * | 2019-02-21 | 2020-08-27 | Walter Maschinenbau Gmbh | Anordnung und Verfahren zur Justage eines Roboterarms |
JP6978456B2 (ja) * | 2019-02-28 | 2021-12-08 | ファナック株式会社 | 情報処理装置および情報処理方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1359066A (fr) * | 1962-04-03 | 1964-04-24 | France Etat | Perfectionnement aux supports de pièces animées d'un mouvement plus ou moins périodique, en particulier des porte-broches de rectification |
US3681978A (en) * | 1971-02-23 | 1972-08-08 | Cincinnati Milacron Inc | Method and apparatus for automatically balancing deflection sensors on rotating equipment |
US5493763A (en) * | 1993-05-24 | 1996-02-27 | Okuma Corporation | Numerically controlled lathe with balance corrector |
EP0708391A2 (de) * | 1994-10-19 | 1996-04-24 | Matsushita Electric Industrial Co., Ltd. | Verfahren und Gerät zur Bearbeitung mit einem bewegbaren Bearbeitungswerkzeug |
DE19630694A1 (de) * | 1996-03-01 | 1997-09-04 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Kompensation dynamischer Verlagerungen an spanabhebenden Werkzeugmaschinen |
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US3634664A (en) * | 1969-04-04 | 1972-01-11 | Bendix Corp | Adaptive and manual control system for machine tool |
US4087890A (en) * | 1974-09-10 | 1978-05-09 | Citizen Watch Company Limited | Compound lathe |
DE3302063C2 (de) * | 1983-01-22 | 1986-06-19 | Brüstle, Michael, Dr.-Ing., 7000 Stuttgart | Einrichtung zur Kompensation von Lagefehlern an Werkzeug- oder Meßmaschinen sowie an Industrie-Robotern |
US4562392A (en) * | 1984-08-29 | 1985-12-31 | General Electric Company | Stylus type touch probe system |
US4698773A (en) * | 1986-01-31 | 1987-10-06 | The Boeing Company | Adaptive feed rate override system for a milling machine |
JP2505534B2 (ja) * | 1988-06-03 | 1996-06-12 | 日立精工株式会社 | 工具検出装置 |
DE3931143C2 (de) * | 1989-09-19 | 1998-05-20 | Rolf Prof Dr Ing Isermann | Verfahren zur Überwachung des Betriebs einer Werkzeugmaschine |
DE4028006C2 (de) * | 1990-09-04 | 1994-04-14 | Deutsche Aerospace | Verfahren zur Kompensation von maßlichen Abweichungen von NC- oder CNC-gesteuerten Werkzeugmaschinen |
US5374884A (en) * | 1992-11-18 | 1994-12-20 | University Of Michigan, The Board Of Regents Acting . . . | Model-based position-repeatable disturbance compensation |
-
1996
- 1996-10-09 DE DE19641494A patent/DE19641494A1/de not_active Withdrawn
-
1997
- 1997-10-09 KR KR1019980704309A patent/KR19990072016A/ko not_active Application Discontinuation
- 1997-10-09 WO PCT/EP1997/005564 patent/WO1998015879A1/de not_active Application Discontinuation
- 1997-10-09 US US09/077,783 patent/US6065338A/en not_active Expired - Fee Related
- 1997-10-09 JP JP51719298A patent/JP2002515832A/ja active Pending
- 1997-10-09 EP EP97910427A patent/EP0865632A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1359066A (fr) * | 1962-04-03 | 1964-04-24 | France Etat | Perfectionnement aux supports de pièces animées d'un mouvement plus ou moins périodique, en particulier des porte-broches de rectification |
US3681978A (en) * | 1971-02-23 | 1972-08-08 | Cincinnati Milacron Inc | Method and apparatus for automatically balancing deflection sensors on rotating equipment |
US5493763A (en) * | 1993-05-24 | 1996-02-27 | Okuma Corporation | Numerically controlled lathe with balance corrector |
EP0708391A2 (de) * | 1994-10-19 | 1996-04-24 | Matsushita Electric Industrial Co., Ltd. | Verfahren und Gerät zur Bearbeitung mit einem bewegbaren Bearbeitungswerkzeug |
DE19630694A1 (de) * | 1996-03-01 | 1997-09-04 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Kompensation dynamischer Verlagerungen an spanabhebenden Werkzeugmaschinen |
Non-Patent Citations (1)
Title |
---|
LI C J ET AL: "TO IMPROVE WORKPIECE ROUNDNESS IN PRECISION DIAMOND TURNING BY IN SITU MEASUREMENT AND REPETITIVE CONTROL", MECHATRONICS, vol. 6, no. 5, 1 August 1996 (1996-08-01), pages 523 - 535, XP000592002 * |
Also Published As
Publication number | Publication date |
---|---|
DE19641494A1 (de) | 1998-04-23 |
EP0865632A1 (de) | 1998-09-23 |
JP2002515832A (ja) | 2002-05-28 |
US6065338A (en) | 2000-05-23 |
KR19990072016A (ko) | 1999-09-27 |
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