DE102010050974A1 - Machine tool, particularly chipping machine tool for milling machine, has machine table to accommodate workpieces, where guides are provided for supporting table assembly - Google Patents
Machine tool, particularly chipping machine tool for milling machine, has machine table to accommodate workpieces, where guides are provided for supporting table assembly Download PDFInfo
- Publication number
- DE102010050974A1 DE102010050974A1 DE201010050974 DE102010050974A DE102010050974A1 DE 102010050974 A1 DE102010050974 A1 DE 102010050974A1 DE 201010050974 DE201010050974 DE 201010050974 DE 102010050974 A DE102010050974 A DE 102010050974A DE 102010050974 A1 DE102010050974 A1 DE 102010050974A1
- Authority
- DE
- Germany
- Prior art keywords
- measuring system
- machine tool
- machine
- table assembly
- guides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/015—Frames, beds, pillars
-
- 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
- B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
Abstract
Description
Die Erfindung betrifft eine Werkzeugmaschine, insbesondere eine spanende Werkzeugmaschine, bestehend aus mindestens einem Maschinenbett, einem Maschinentisch zur Aufnahme von Werkstücken, Führungen zur Abstützung der Tischbaugruppe und einem zugeordneten Messsystem zum Erfassen von geradlinigen Relativbewegungen an Bauteilen, wobei das Messsystem als ein Längenmesssystem mit Tastkopf und einem an einem Maschinenteil befestigten Maßstab ausgestaltet ist.The invention relates to a machine tool, in particular a cutting machine tool, comprising at least one machine bed, a machine table for receiving workpieces, guides for supporting the table assembly and an associated measuring system for detecting rectilinear relative movements of components, wherein the measuring system as a length measuring system with probe and a scale attached to a machine part is designed scale.
Messsysteme an spanenden Werkzeugmaschinen, vorzugsweise an Fräsmaschinen oder Bearbeitungszentren, werden üblicherweise an Tischbaugruppen oder mit etwas Abstand zu diesen an anderen Baugruppen angebracht, die möglichst nahe zu den das Werkstück aufnehmenden Baugruppen liegen.Measuring systems on cutting machine tools, preferably on milling machines or machining centers, are usually mounted on table assemblies or with some distance to them on other modules that are as close as possible to the workpiece receiving assemblies.
Das thermische Verhalten einer Werkzeugmaschine wird wesentlich durch die Einwirkung von Wärmequellen beeinflusst. Derartige Wärmequellen können der Arbeitsprozess der Werkzeugmaschine selbst sein (Wärme beim Zerspanen oder Umformen), die Maschinenkomponenten (Antriebsmotoren, Lager, Führungen), die Anordnung und Temperierung von Fluiden (z. B. Luft, Kühlschmiermittel) und die Umgebung der Aufstellung. Infolge dieser thermischen Veränderungen an einer Werkzeugmaschine kommt es zu maßlichen Verschiebungen am Werkstück. Diese temperaturbedingten Änderungen wirken sich umso stärker aus, je länger der Fahrweg der Maschinenteile ist. Zur Minimierung von thermischen Veränderungen nutzen bekannte Lösungen Temperaturkompensationen mittels Dehnmaßstäben und gekapselter Längenmesseinrichtungen zur Minderung der Längenänderungen.The thermal behavior of a machine tool is significantly influenced by the action of heat sources. Such heat sources can be the working process of the machine tool itself (heat during machining or forming), the machine components (drive motors, bearings, guides), the arrangement and temperature control of fluids (eg air, cooling lubricant) and the environment of installation. As a result of these thermal changes on a machine tool it comes to dimensional shifts on the workpiece. These temperature-related changes are more pronounced the longer the travel of the machine parts. To minimize thermal changes, known solutions utilize temperature compensation by means of strain gauges and encapsulated length measuring devices to reduce length changes.
So wird in
Gemäß
Bei der technischen Lösung nach
Die bisherigen Anordnungen der Messeinrichtungen, insbesondere der Längenmesssysteme mit Maßstab und Tastkopf, können dennoch die maßlichen Verschiebungen am Werkstück nicht ausreichend bzw. nur mit hohem Aufwand verhindern.The previous arrangements of the measuring devices, in particular the length measuring systems with scale and probe, yet can not sufficiently prevent the dimensional displacements on the workpiece or only with great effort.
Aufgabe der Erfindung ist es, eine technische Lösung für lineare Messsysteme zum Einsatz an Werkzeugmaschinen zu schaffen, mit der auftretende Temperaturschwankungen der für die Messung relevanten Baugruppen niedrig gehalten werden können, so dass die Messgenauigkeit des gesamten Messsystems erhöht wird.The object of the invention is to provide a technical solution for linear measuring systems for use on machine tools, with which occurring temperature fluctuations of the assemblies relevant for the measurement can be kept low, so that the measurement accuracy of the entire measuring system is increased.
Diese Aufgabe wird gelöst, indem das Messsystem im Bereich der Tischbaugruppe derart thermosymmetrisch angeordnet ist, dass sich thermisch bedingte Änderungen der geometrischen Abmessungen der Bauteile weitgehend gegenseitig aufheben. Vorteilhafte Ausgestaltungen sind Gegenstand von Unteransprüchen, deren Merkmale in einem Ausführungsbeispiel näher erläutert werden.This object is achieved by arranging the measuring system in the area of the table module in such a thermosymmetrical manner that thermally induced changes in the geometric dimensions of the components largely cancel each other out. Advantageous embodiments are the subject of dependent claims whose features are explained in more detail in one embodiment.
Durch die hier als „thermosymmetrisch” bezeichnete Anordnung des Messsystems zwischen den Führungen des Maschinentisches und der Anordnung des Tastkopfes mittig am Maschinentisch heben sich temperaturbedingte Ausdehnungen der Bauteile weitgehend gegenseitig auf. Diese Eigenschaft wird zur Werkstückmessung genutzt. Die Anordnung des Tastkopfes erfolgt in einer Öffnung, vorzugsweise im mittleren Drittel der Länge und Breite der Tischbaugruppe.Due to the arrangement of the measuring system between the guides of the machine table and the arrangement of the probe centered on the machine table, referred to herein as "thermo-symmetrical", temperature-induced expansions of the components largely cancel each other out. This property is used for workpiece measurement. The arrangement of the probe takes place in an opening, preferably in the middle third of the length and width of the table assembly.
Eine Tischbaugruppe wird von mindestens zwei Führungen geführt. Ein Messsystem kann längs oder quer zur Führung thermosymmetrisch angeordnet werden, um die thermischen Fehler zu reduzieren. Die Datenauswertung erfolgt in der Steuerung der Maschine oder in einer Auswerteinheit.A table assembly is guided by at least two guides. A measuring system can be arranged thermosymmetrically along or transversely to the guide in order to reduce the thermal errors. The data evaluation takes place in the control of the machine or in an evaluation unit.
Mit einfachen Mitteln kann durch die Öffnung im Tisch und die Anbringung des Tastkopfes eine hohe Messgenauigkeit erzielt werden. Damit werden Messungenauigkeiten infolge von Temperaturschwankungen und unterschiedlichen Wärmedehnungen der Messsysteme und des Werkstückes bei der Bearbeitung von Werkstücken erheblich reduziert. Insbesondere an großen Fräsbearbeitungszentren kann mit dieser technischen Lösung eine hohe Genauigkeit erreicht werden. Gemäß einer bevorzugten Ausgestaltung kann der Maßstab auch auf einer zur Führung beliebigen Ebene angeordnet werden.With simple means, a high measurement accuracy can be achieved through the opening in the table and the attachment of the probe. This considerably reduces measurement inaccuracies due to temperature fluctuations and different thermal expansions of the measuring systems and the workpiece during the machining of workpieces. In particular, at large milling centers can be achieved with this technical solution, a high accuracy. According to a preferred embodiment, the scale can also be arranged on an arbitrary level to guide.
Der Tastkopf des Messsystems ist zur Montage bzw. Servicezwecken von oben durch eine Öffnung zugänglich. Andererseits kann die Öffnung im Tisch auch durch einen Deckel bündig verschlossen werden.The probe of the measuring system is accessible for installation or service purposes from above through an opening. On the other hand, the opening in the table can also be closed flush by a lid.
Die Erfindung wird nachfolgend an einem bevorzugten Ausführungsbeispiel erläutert. In der zugehörigen Zeichnung zeigt die einzige
In
Ein Messsystem besteht aus einem Maßstab
Die Befestigung des Tastkopfes
Das zu messende Objekt (z. B. ein hier nicht näher dargestelltes Werkstück) wird auf der Tischbaugruppe
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Tischbaugruppetable assembly
- 22
- Führungguide
- 33
- Messsystem, MaßstabMeasuring system, scale
- 44
- Öffnungopening
- 55
- Messsystem, TastkopfMeasuring system, probe
- 66
- Länge der TischbaugruppeLength of the table assembly
- 77
- Breite der TischbaugruppeWidth of the table assembly
- XX
- Bewegungsrichtung der TischbaugruppeDirection of movement of the table assembly
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 3116827 C2 [0004] DE 3116827 C2 [0004]
- DE 3419527 C2 [0005] DE 3419527 C2 [0005]
- DE 10164405 A1 [0006] DE 10164405 A1 [0006]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010050974 DE102010050974A1 (en) | 2010-11-08 | 2010-11-08 | Machine tool, particularly chipping machine tool for milling machine, has machine table to accommodate workpieces, where guides are provided for supporting table assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010050974 DE102010050974A1 (en) | 2010-11-08 | 2010-11-08 | Machine tool, particularly chipping machine tool for milling machine, has machine table to accommodate workpieces, where guides are provided for supporting table assembly |
Publications (1)
Publication Number | Publication Date |
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DE102010050974A1 true DE102010050974A1 (en) | 2012-05-10 |
Family
ID=45971138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE201010050974 Withdrawn DE102010050974A1 (en) | 2010-11-08 | 2010-11-08 | Machine tool, particularly chipping machine tool for milling machine, has machine table to accommodate workpieces, where guides are provided for supporting table assembly |
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DE (1) | DE102010050974A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013112834A1 (en) * | 2013-11-20 | 2015-05-21 | Ifr Engineering Gmbh | Machine tool slides |
DE102018206510A1 (en) * | 2018-04-26 | 2019-10-31 | Deckel Maho Pfronten Gmbh | machine tool |
DE202022002593U1 (en) | 2022-12-06 | 2024-03-07 | Nsh Technology Gmbh | Device for cooling and thermal stabilization of a profile rail guide on a machine tool |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3116827C2 (en) | 1981-02-23 | 1983-10-20 | Maho Werkzeugmaschinenbau Babel & Co, 8962 Pfronten | Measuring device for machine tools for detecting linear relative movements of two machine parts |
DE3419527C2 (en) | 1984-05-25 | 1989-09-07 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut, De | |
DE19833741C1 (en) * | 1998-07-27 | 2000-03-02 | Fraunhofer Ges Forschung | Layered machine part for machine tool comprises individual layers with different thermal expansion coefficients decreasing towards heat source or reducing towards heat sink |
DE20109043U1 (en) * | 2001-05-30 | 2001-08-09 | Ilg Gmbh | Machine tool |
WO2002014000A1 (en) * | 2000-08-14 | 2002-02-21 | Koeng Emil | Machining and control unit for the production of automatic linear transfer and special machines |
DE10164405A1 (en) | 2000-12-29 | 2003-01-09 | Niles Simmons Industrieanlagen | Method for compensating for distortion in rotating machine tool shafts has two helical cooling channels with oppositely flowing cooling media |
-
2010
- 2010-11-08 DE DE201010050974 patent/DE102010050974A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3116827C2 (en) | 1981-02-23 | 1983-10-20 | Maho Werkzeugmaschinenbau Babel & Co, 8962 Pfronten | Measuring device for machine tools for detecting linear relative movements of two machine parts |
DE3419527C2 (en) | 1984-05-25 | 1989-09-07 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut, De | |
DE19833741C1 (en) * | 1998-07-27 | 2000-03-02 | Fraunhofer Ges Forschung | Layered machine part for machine tool comprises individual layers with different thermal expansion coefficients decreasing towards heat source or reducing towards heat sink |
WO2002014000A1 (en) * | 2000-08-14 | 2002-02-21 | Koeng Emil | Machining and control unit for the production of automatic linear transfer and special machines |
DE10164405A1 (en) | 2000-12-29 | 2003-01-09 | Niles Simmons Industrieanlagen | Method for compensating for distortion in rotating machine tool shafts has two helical cooling channels with oppositely flowing cooling media |
DE20109043U1 (en) * | 2001-05-30 | 2001-08-09 | Ilg Gmbh | Machine tool |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013112834A1 (en) * | 2013-11-20 | 2015-05-21 | Ifr Engineering Gmbh | Machine tool slides |
DE102018206510A1 (en) * | 2018-04-26 | 2019-10-31 | Deckel Maho Pfronten Gmbh | machine tool |
DE202022002593U1 (en) | 2022-12-06 | 2024-03-07 | Nsh Technology Gmbh | Device for cooling and thermal stabilization of a profile rail guide on a machine tool |
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R163 | Identified publications notified | ||
R012 | Request for examination validly filed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |