DE935535C - Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools - Google Patents

Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools

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Publication number
DE935535C
DE935535C DED11160A DED0011160A DE935535C DE 935535 C DE935535 C DE 935535C DE D11160 A DED11160 A DE D11160A DE D0011160 A DED0011160 A DE D0011160A DE 935535 C DE935535 C DE 935535C
Authority
DE
Germany
Prior art keywords
cutting edges
tools
grinding
hard metal
fine grinding
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
DED11160A
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German (de)
Inventor
Erich A F Dr-Ing Dinglinger
Anton Dr-Ing Heiss
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DED11160A priority Critical patent/DE935535C/en
Application granted granted Critical
Publication of DE935535C publication Critical patent/DE935535C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/34Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Die -Forschung auf dem Zerspanungsgebiet zeigt, daß nicht nur die Schneidenwinkel von Einfluß auf die Standhaltigkeit der Schneiden sind, sondern auch die Schartigkeitsgüte. Feinstgeschliffene Schneiden, insbesondere bei Hartmetall, mit geringer Schartigkeit ergeben eine längere Standzeit während der Arbeit, als wenn sie nur feingeschliffen sind.Research in the field of machining shows that not only the Edge angles have an influence on the durability of the cutting edges, but rather also the goodness of chippings. Finely ground cutting edges, especially with hard metal, with less chipping result in a longer service life during work than if only they are honed.

Bisher wurde insbesondere beim Freihandschleifen auf Schleifböcken stets gegen die Hartmetallschneide geschliffen (vgl. Abb. I). Abweichungen hiervon gab es nur beim halbmaschinellen Schliff.Up until now, freehand grinding on bench grinders was particularly important always ground against the hard metal cutting edge (see Fig. I). Deviations from this only existed with semi-machine grinding.

Ein Schleifen parallel zur Schneidkante wurde vorgenommen, um Spanstufen einzuschleifen (Abb. 2). Teils ist dieses auch für den Profilschliff (Außenradius), teils auch für den Massenschliff (mehrere Drehstähle in einem Block) vorgeschlagen worden. In diesen Fällen wurde aber stets die zylindrische Mantelfläche einer Schleifscheibe parallel zur Schneide bewegt.A grinding parallel to the cutting edge was done to create chip steps to be ground in (Fig. 2). Part of this is also for the profile grinding (outer radius), partly also suggested for mass grinding (several turning tools in one block) been. In these cases, however, the cylindrical outer surface of a grinding wheel was always used moved parallel to the cutting edge.

Eingehende Untersuchungen haben nun gezeigt, daß gegenüber diesen bekannten Schleifverfahren eine wesentlich geringere Schneidenschartigkeit erzielt wird, wenn, wie erfindungsgemäß vorgeschlagen, die Schneidkeilflächen mit der ebenen Fläche einer umlaufenden Schleifscheibe (Schleifband) in an sich bekannter Weise parallel zur Schneide geschliffen werden.In-depth investigations have now shown that compared to these known grinding process achieved a significantly lower edge chipping if, as proposed according to the invention, the cutting wedge surfaces with the flat Area of a rotating grinding wheel (grinding belt) in a manner known per se be ground parallel to the cutting edge.

Dieses Verfahren ist an sich seit langem beim Abziehen eines Messers bekannt. Eine Übertragung auf das Freihandschleifen öder maschinelle Schleifen der Schneiden von Drehstählen erfolgte aber nie (s. Abb. 3) Zur Durchführung des erfindungsgemäßen doppelseitigen Parallelschleifverfahrens ist ein Umbau der bisherigen Schleifmaschine (vgl. Abb. 4) hinsichtlich der Lage der Schleiftische erforderlich. Es ist beispielsweise bei Drehmeißeln notwendig, daß der Meißel mindestens bei einem Schneidenschliff fest auf einer Grundfläche aufliegt. Ein Hochkantstellen auf den Schleiftisch, der auf Scheibenmitte eingestellt ist, ist nicht immer möglich, insbesondere, wenn es sich um gebogene Drehstähle handelt. Es ist daher erforderlich, daß der Schleiftisch so heb- und senkbar ist, so daß am oberen oder unteren Rand der Schleifscheibe das Schleifen erfolgen kann (vgl. Abb. 4).This procedure in itself has long been used when honing a knife known. A transfer to freehand grinding or machine grinding of the However, turning tools were never cut (see Fig. 3) double-sided parallel grinding process is a conversion of the previous grinding machine (see Fig. 4) with regard to the position of the grinding tables. It is for example In the case of lathe chisels, it is necessary that the chisel has at least one cutting edge rests firmly on a base. Editing on the sanding table that is set to the center of the target is not always possible, especially if it is are curved turning tools. It is therefore necessary that the grinding table can be raised and lowered so that the Grinding can be done (see Fig. 4).

Die Verstellung des Schleiftisches muß während des Schleifens schnell erfolgen können. Sie kann durch Hebel, Zahnstange oder andere Hilfsmittel vorgenommen werden (vgl. Abb. 6). Von Hand, hydraulisch, elektrisch, mit Preßluft oder durch einen anderen Antrieb wird hierbei der Werkzeugauflagetisch verstellt. Selbstverständlich ist es auch möglich, die Schleifscheibe selbst schnell höhenverstellbar anzuordnen (vgl. Abb. 7), so daß bei feststehendem Werkzeugauflagetisch sowohl gegen die Schneide als auch parallel zur Schneide geschliffen werden kann.The adjustment of the sanding table must be quick during sanding can be done. It can be done by lever, rack or other aids (see Fig. 6). By hand, hydraulically, electrically, with compressed air or by another drive is used to adjust the tool support table. Of course it is also possible to quickly adjust the height of the grinding wheel itself (see Fig. 7), so that when the tool support table is stationary, both against the cutting edge as well as can be ground parallel to the cutting edge.

Bei einem Schleifband ist die Höhenverstellung zweckmäßig aus Gründen der gleichmäßigen Abnutzung vorzunehmen. Ebenso wie bei einem Schleifband kann auch an hin und her bewegenden Schleiffeilen oder ähnlichen Schleifmitteln parallel zur Schleifrichtung die Schneide abgezogen werden.In the case of a sanding belt, the height adjustment is useful for reasons to ensure uniform wear. As with a sanding belt, it can also on back and forth moving sanding files or similar abrasives parallel to the Grinding direction the cutting edge can be removed.

Claims (2)

PATENTANSPRÜCHE: I. Verfahren zum Feinstschleifen von Schneiden an Werkzeugen, insbesondere Hartmetall-Schneiden an Drehstählen, dadurch gekennzeichnet, daß die Schneidkeilflächen an die ebene Fläche einer umlaufenden Schleifscheibe (Schleifband) so angelegt werden, daß die Schneidkeilflächen in an sich bekannter Weise parallel zur Schneide geschliffen werden. PATENT CLAIMS: I. Process for fine grinding of cutting edges Tools, in particular carbide cutting edges on turning tools, characterized in that that the cutting wedge surfaces on the flat surface of a rotating grinding wheel (Abrasive belt) are applied in such a way that the cutting wedge surfaces are known per se Be ground parallel to the cutting edge. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß die Schleifscheibe (Schleifband) oder der Werkstückhalter oder beide während des Schleifens in der Höhenlage schnell verstellbar sind. Angezogene Druckschriften: Britische Patentschrift Nr. 638 594; USA.-Patentschrift Nr. 22 394202.2. Device for implementation of the method according to claim i, characterized in that the grinding wheel (grinding belt) or the workpiece holder, or both, quickly while grinding at high altitude are adjustable. Cited references: British Patent No. 638,594; U.S. Patent No. 22,394,202.
DED11160A 1951-12-21 1951-12-21 Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools Expired DE935535C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED11160A DE935535C (en) 1951-12-21 1951-12-21 Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED11160A DE935535C (en) 1951-12-21 1951-12-21 Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools

Publications (1)

Publication Number Publication Date
DE935535C true DE935535C (en) 1955-11-24

Family

ID=7033656

Family Applications (1)

Application Number Title Priority Date Filing Date
DED11160A Expired DE935535C (en) 1951-12-21 1951-12-21 Method and device for the fine grinding of cutting edges on tools, in particular hard metal cutting edges on turning tools

Country Status (1)

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DE (1) DE935535C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394202A (en) * 1944-01-11 1946-02-05 Aloysious P Pollard Tool bit grinding machine
GB638594A (en) * 1947-12-02 1950-06-14 Sims Motor Units Ltd Improvements in or relating to the grinding of tools

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394202A (en) * 1944-01-11 1946-02-05 Aloysious P Pollard Tool bit grinding machine
GB638594A (en) * 1947-12-02 1950-06-14 Sims Motor Units Ltd Improvements in or relating to the grinding of tools

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