DE367008C - Process for equalizing the temperature between the machine tool and the workpiece - Google Patents

Process for equalizing the temperature between the machine tool and the workpiece

Info

Publication number
DE367008C
DE367008C DEH88480D DEH0088480D DE367008C DE 367008 C DE367008 C DE 367008C DE H88480 D DEH88480 D DE H88480D DE H0088480 D DEH0088480 D DE H0088480D DE 367008 C DE367008 C DE 367008C
Authority
DE
Germany
Prior art keywords
workpiece
coolant
temperature
lead screw
equalizing
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.)
Expired
Application number
DEH88480D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenoptik Industrial Metrology Germany GmbH
Original Assignee
Hommelwerke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hommelwerke GmbH filed Critical Hommelwerke GmbH
Priority to DEH88480D priority Critical patent/DE367008C/en
Application granted granted Critical
Publication of DE367008C publication Critical patent/DE367008C/en
Expired legal-status Critical Current

Links

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
    • 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
    • B23Q11/14—Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/146—Methods or arrangements for maintaining a constant temperature in parts of machine tools by controlling the temperature of a cutting liquid
    • 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
    • B23Q11/14—Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/141—Methods or arrangements for maintaining a constant temperature in parts of machine tools using a closed fluid circuit for cooling or heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Description

Bei Werkzeugmaschinen ergeben sich vielfach Mängel daraus, daß die Maschine oder gerade die für den Arbeitsgang wichtigen Teile eine andere Temperatur haben als das Werkstück. Ein derartiger Fall liegt beispielsweise beim Gewindeschneiden vor. Das Gewinideschneiden ■ auf der Maschine beruht darauf, daß die Steigung der Leitspindel entweder unmittelbar oder durch Übersetzungen, sei es durch Getriebe oder Lineale o. dgl. auf das Werkstück übertragen wird.In machine tools there are often defects from the fact that the machine or especially the parts that are important for the operation have a different temperature than that Workpiece. Such a case occurs, for example, in thread cutting. That Thread cutting ■ on the machine is based on the fact that the lead screw pitch is either directly or through translations, be it through gears or rulers or the like the workpiece is transferred.

Die Leitspinidel und das Werkstück halben dabei eine verschiedene Temperatur. Besonders wenn es 'sich um längere Gewinde handelt, sind die Temperaturunterschiede für besonders genaue Gewinde nicht ohne Einfluß, da schon ein Unterschied von 1 ° zwischen der Leitspindel und dem zu schneidenden Werkstuck auf 100 mm bereits eine Ungenauigkeit von rund 1,15 Tausendstel Millimeter zur Folge hat.The lead spinids and the workpiece have a different temperature. Particularly if the thread is longer, the temperature differences are special exact thread not without influence, as there is already a difference of 1 ° between the Lead screw and the workpiece to be cut to 100 mm already an inaccuracy of around 1.15 thousandths of a millimeter.

Die Leitspindel erwärmt sich durch ihre Reibung im Schloß, d. h. in der Mutter, die zur Fortbewegung des Supportes dient, auchThe lead screw is heated by its Friction in the lock, d. H. in the mother, who is used to move the support, too

in den Lagerstellen usw., während das Werkstück wieder anderen Bedingungen ausgesetzt ist, da von ihm durch den Schnaiidstahl Späne abgenommen werden, wobei eine übermäßige Erwärmung durch Kühlwasser verringert wird.in the bearings, etc., while the workpiece is again exposed to different conditions is because chips are removed from it by the Schnaiidstahl, with an excessive amount Heating by cooling water is reduced.

Die Gewinde werden daher aus den angegebenen Gründen ungenau.The threads therefore become imprecise for the reasons given.

Die Erfindung bezweckt nun einen Temperaturausgleich zwecks Beseitigung der angegebenen Mängel in der Weise, daß der für die Bearbeitung oder die Genauigkeit hauptsächlich in Betracht kommende Maschinenteil etwa die Leitspinidel oder die Mutter (Schloß) auf die gleiche Temperatur gebracht wird wie das zu bearbeitende Werkstück.The invention aims at a temperature compensation for the purpose of eliminating the specified Deficiencies in such a way that the chiefly for the machining or the accuracy machine part in question, for example, the lead spinidel or the nut (lock) is brought to the same temperature as the workpiece to be machined.

Beim Gewindeschneiden hat man bisher wohl das Werkstück durch reichliche Wasserzufuhr gekühlt, so daß dieses die Temperatur des Kühlwassers annehmen kann, die Vorschubvorrichtung, etwa die Transportspindel, wurde aber nicht gekühlt, und daraus ergaben sich dann die obenerwähnten Mängel. Bemerkt wird noch, daß es bei Bohrmaschinen bekannt ist, Werkstück und Werkzeug in einem Flüsigkeitsbade zu lagern, doch liegt hier die Vorschubvorrichtung frei.When thread cutting, the workpiece has so far been provided with an abundant supply of water cooled so that it can take on the temperature of the cooling water, the feed device, the transport spindle, for example, but was not cooled, and this resulted in the above-mentioned defects. It should also be noted that it is known for drilling machines to use the workpiece and tool in To store a liquid bath, but here the feed device is exposed.

Die Erfindung besteht mm darin, auch die Leitspindel oder ähnliche Organe ebenfalls zu kühlen und auf eine mit der Temperatur des Werkstückes möglichst gleiche Temperatur zu bringen. Das kann dadurch geschehen, daß beide mit demselben Kühlmittel, etwa Kühlwasser oder mit Kühlmitteln gleicher Temperatur, gekühlt werden. Beim Gewindeschneiden kann der Temperaturausgleich beispielsweise dadurch erzielt werden, 'daß das Kühlmittel durch die hohl ausgeführte Leitspindel hindurchgeführt wind, so daß es, bevor es auf das zu bearbeitende Werkstück kommt, die Leitspindel in ununterbrochenem Kreislauf durchflossen hat. Dadurch ist die größtmöglichste Sicherheit gegeben, daß Leitspindel und Werkstück möglichst gleiche Temperatur, angenommen haben.The invention consists in that, too Lead screw or similar organs also to cool and to a temperature of the Bring the workpiece as the same temperature as possible. This can be done by both with the same coolant, e.g. cooling water or with coolants of the same temperature, be cooled. When thread cutting, the temperature compensation can, for example can be achieved 'that the coolant through the hollow lead screw passed through wind so that it before it on the workpiece to be machined comes, has flowed through the lead screw in an uninterrupted cycle. This is the The greatest possible certainty that the lead screw and workpiece are as similar as possible Temperature.

Der Ausgleich kann noch dadurch beför-The compensation can still be promoted

dert werden, daß die zu bearbeitenden Werkstücke vorher bereits in den Kreislauf des Kühlmittels, beispielsweise des Kühlwassers,, gelegt werden, und zwar zweckmäßig kurz nachdem das Wasser von dem in Arbeit befindlichen Werkstück abgelaufen ist. Dadurch werden diese Stücke schon vor der Bearbeitung auf die Schneidtemperatur gebracht und die Leitspindel und die Werkstücke haben diebe changed that the workpieces to be processed previously in the circuit of the Coolant, for example the cooling water, are placed, and expediently briefly after the water has drained from the workpiece in progress. Through this these pieces are brought to the cutting temperature before machining and the lead screw and the workpieces have the

ίο kl einstmöglichsten Temperaturunterschiede.ίο as small as possible temperature differences.

Man kann das Kühlmittel auch durch die Spindelmutter führen, die zu diesem Zweck eine doppelte Wandung erhalten kann; das Kühlmittel wird dann durch den so geschaffenen Hohlraum geleitet.The coolant can also be fed through the spindle nut for this purpose can have a double wall; the coolant is then created by the Cavity passed.

Zweckmäßig wird in allen Fällen die Temperatur des Kühlmittels möglichst genau auf der betreffenden Bezugstemperatur (in Deutschland 200 C) erhalten, um kleine Ungleichheiten im Wärmeausdehnungskoeffizienten der verschiedenen Materialien auszuschalten. In all cases, the temperature of the coolant is expediently kept as precisely as possible at the relevant reference temperature (in Germany 20 ° C.) in order to eliminate small inequalities in the coefficient of thermal expansion of the various materials.

Claims (5)

P atent-An.s.pr-üche :Patent applications: i. Verfahren zum Ausgleich der Temperatur zwischen Werkzeugmaschine und Werkstück, dadurch gekennzeichnet, daß das für die Bewegung des Werkstückes oder Werkzeuges dienende Organ durch ein Kühlmittel auf die gleiche Temperatur gebracht wird wie das Werkstück.i. Method for equalizing the temperature between machine tool and Workpiece, characterized in that the organ serving for the movement of the workpiece or tool through a coolant is brought to the same temperature as the workpiece. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Leitspindel hohl ausgeführt ist und das Kühlmittel durch die Spindel hindurchgeführt, und dann über das in Arbeit befindliche Werkstück geführt wird.2. Device for carrying out the method according to claim 1, characterized in that that the lead screw is made hollow and the coolant passed through the spindle, and then over the workpiece in progress is guided. 3. Vorrichtung zur Ausführung des Verfahr ens nach Anspruch 1, dadurch gekennzeichnet, daß das Kühlmittel durch oder über die Mutter (das Schloß) der Leitspindel geleitet wird, wobei im letzteren Falle die Mutter mit einem Mantel versehen wenden kann, derart, daß das Kühlmittel durch den Zwischenraum zwischen Mantel und Mutter hindurchgeht.3. Device for executing the movement ens according to claim 1, characterized in that the coolant by or is passed via the nut (the lock) of the lead screw, in the latter case the nut is provided with a jacket can turn, such that the coolant through the space between Coat and mother goes through. 4. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß das Kühlmittel sowohl durch die Spindel als auch durch oder über die Mutter geleitet wind.4. Apparatus for carrying out the method according to claim 1, characterized in that that the coolant both through the spindle and through or over the Mother headed wind. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Werkstücke schon vor der Bearbeitung in den Kreislauf des Kühlmittels gebracht werden und das Einbringen an einer Stelle erfolgt, an der das Kühlmittel das in Arbeit befindliche Werkstück gerade verlassen hat.5. The method according to claim 1, characterized in that the workpieces already be brought into the coolant circuit prior to processing and the introduction takes place at a point where the coolant touches the workpiece in progress has just left.
DEH88480D 1922-01-22 1922-01-22 Process for equalizing the temperature between the machine tool and the workpiece Expired DE367008C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH88480D DE367008C (en) 1922-01-22 1922-01-22 Process for equalizing the temperature between the machine tool and the workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH88480D DE367008C (en) 1922-01-22 1922-01-22 Process for equalizing the temperature between the machine tool and the workpiece

Publications (1)

Publication Number Publication Date
DE367008C true DE367008C (en) 1923-01-15

Family

ID=7165302

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH88480D Expired DE367008C (en) 1922-01-22 1922-01-22 Process for equalizing the temperature between the machine tool and the workpiece

Country Status (1)

Country Link
DE (1) DE367008C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1019201B (en) * 1955-06-02 1957-11-07 Herbert Lindner G M B H Cooling device on thread generating machines, preferably thread grinding machines
DE1036604B (en) * 1956-10-15 1958-08-14 Wagner & Co Feed spindle with high feed accuracy on machine tools
DE1147821B (en) * 1957-10-23 1963-04-25 Karl Burgsmueller Method for correcting the tendency error on hollow, revolving lead screws for precision thread generating machines and lead screw
DE1218251B (en) * 1958-12-17 1966-06-02 Cincinnati Milling Machine Co Machine tool with control device to keep the temperature difference between machine parts constant
DE3927855A1 (en) * 1988-08-31 1990-04-26 Okuma Machinery Works Ltd FEED SPINDLE BEARING STRUCTURE
DE4202510A1 (en) * 1992-01-30 1993-08-05 Schaeffler Waelzlager Kg Machine tool feed unit lead-screw with internal cooling - is hollow with coolant flowing along bearing mounted inner tube and back along space between tube and wall to bearing mounted outlet collar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1019201B (en) * 1955-06-02 1957-11-07 Herbert Lindner G M B H Cooling device on thread generating machines, preferably thread grinding machines
DE1036604B (en) * 1956-10-15 1958-08-14 Wagner & Co Feed spindle with high feed accuracy on machine tools
DE1147821B (en) * 1957-10-23 1963-04-25 Karl Burgsmueller Method for correcting the tendency error on hollow, revolving lead screws for precision thread generating machines and lead screw
DE1218251B (en) * 1958-12-17 1966-06-02 Cincinnati Milling Machine Co Machine tool with control device to keep the temperature difference between machine parts constant
DE3927855A1 (en) * 1988-08-31 1990-04-26 Okuma Machinery Works Ltd FEED SPINDLE BEARING STRUCTURE
US5025914A (en) * 1988-08-31 1991-06-25 Okuma Machinery Works, Ltd. Feed-screw support structure
DE4202510A1 (en) * 1992-01-30 1993-08-05 Schaeffler Waelzlager Kg Machine tool feed unit lead-screw with internal cooling - is hollow with coolant flowing along bearing mounted inner tube and back along space between tube and wall to bearing mounted outlet collar

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