DE267264C - - Google Patents
Info
- Publication number
- DE267264C DE267264C DENDAT267264D DE267264DA DE267264C DE 267264 C DE267264 C DE 267264C DE NDAT267264 D DENDAT267264 D DE NDAT267264D DE 267264D A DE267264D A DE 267264DA DE 267264 C DE267264 C DE 267264C
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- tool
- machine
- demagnetization
- magnetic field
- 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.)
- Active
Links
- 238000003754 machining Methods 0.000 claims description 2
- 230000005347 demagnetization Effects 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Milling Processes (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Verwendung magnetischer Aufspannvorrichtungen für Werkzeugmaschinen zeigte bisher den Nachteil, daß infolge der StreuungThe use of magnetic jigs for machine tools demonstrated so far the disadvantage that as a result of the dispersion
■ des magnetischen Feldes der Aufspannplatte das Arbeitswerkzeug, ζ. Β. der Fräser selbst magnetisch wurde, so daß an ihm die feinen Späne, die bei der Bearbeitung des aufgespannten Werkstückes entstehen, festgehalten wurden. Diese Späne verursachten eine■ the magnetic field of the clamping plate the working tool, ζ. Β. the cutter itself became magnetic, so that on it the fine chips that were clamped during the processing of the Workpiece arise, were recorded. These chips created one
ίο Schädigung der zu bearbeitenden Oberfläche, da sie zu Schrammen Veranlassung gaben. Man war bisher genötigt, die Entmagnetisierung des Werkzeuges bei Stillstand der Werkzeugmaschine und nach Entfernung des Werkzeuges aus der Maschine auf einem besonderen Entmagnetisierungsapparat auszuführen. Diese Entmagnetisierung war jedoch nur von kurzer Dauer, da beim ersten Neueinschalten des Stromes der Spannplatte sofort wieder eine Neumagnetisierung des Werkzeuges eintrat.ίο damage to the surface to be processed, because they gave rise to scratches. So far, demagnetization has been required of the tool when the machine tool is at a standstill and after the tool has been removed out of the machine on a special degaussing machine. These However, demagnetization was short-lived, as the first time the With the current of the clamping plate, the tool was immediately re-magnetized.
Die vorliegende Erfindung vermeidet diesen erheblichen Nac'hteil dadurch, daß das Werkzeug während der ganzen Dauer der Bearbeitungsperiode einem magnetischen Wechselfeld ausgesetzt ist. In der Figur ist eine beispielsweise Ausführung der Vorrichtung dargestellt, und zwar für eine Fräsmaschine. Es bedeutetP die magnetische Spannplatte, welche das zu bearbeitende Werkstück A festgespannt hält. T bezeichnet den Arbeitstisch der Maschine und F den Fräser. Die Entmagneti- ^sierungsvorrichtung besteht aus der mit elektromagnetischer, von Wechselstrom oder pulsierendem Gleichstrom durchflossener Wickelung versehenen Spule C1, an welche sich die den magnetischen Kraftlinienfluß fortleitenden Schenkel C2 ansetzen, welche die Polschuhe s tragen. Der magnetische Kraftlinienfluß ist durch die Polschuhe s derart geleitet, daß die Zähne des Fräsers F von dem magnetischen1 Wechselfelde umfaßt werden. D bedeutet die Befestigungsschelle des Entmagnetisierungsapparates an der Fräsmaschine.The present invention avoids this considerable disadvantage in that the tool is exposed to an alternating magnetic field for the entire duration of the machining period. The figure shows an example of an embodiment of the device, specifically for a milling machine. It means P the magnetic chuck which holds the workpiece A to be machined. T denotes the work table of the machine and F the milling cutter. The demagnetization device consists of the coil C 1 provided with an electromagnetic winding through which alternating current or pulsating direct current flows , to which the legs C 2 , which carry the magnetic flux of lines of force and which carry the pole shoes, are attached. The magnetic Kraftlinienfluß is passed through the pole pieces s in such a way that the teeth of the cutter F from the magnetic alternating field comprises 1 are. D means the fastening clamp of the degaussing device on the milling machine.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE267264C true DE267264C (en) |
Family
ID=524337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT267264D Active DE267264C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE267264C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5283435A (en) * | 1991-11-27 | 1994-02-01 | Leybold Aktiengesellschaft | Apparatus for determining the concentration of a gas in a vacuum chamber |
-
0
- DE DENDAT267264D patent/DE267264C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5283435A (en) * | 1991-11-27 | 1994-02-01 | Leybold Aktiengesellschaft | Apparatus for determining the concentration of a gas in a vacuum chamber |
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