DE59734C - Hand grinding device for twist drills - Google Patents

Hand grinding device for twist drills

Info

Publication number
DE59734C
DE59734C DENDAT59734D DE59734DA DE59734C DE 59734 C DE59734 C DE 59734C DE NDAT59734 D DENDAT59734 D DE NDAT59734D DE 59734D A DE59734D A DE 59734DA DE 59734 C DE59734 C DE 59734C
Authority
DE
Germany
Prior art keywords
drill
handle
curve
guide
twist drills
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 - Lifetime
Application number
DENDAT59734D
Other languages
German (de)
Original Assignee
Schmidt'sche Schmirgel wa Arenfabrik mayer & schmidt in Offenbach a. M
Publication of DE59734C publication Critical patent/DE59734C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B24B3/24Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills

Landscapes

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

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings. BERLIN· GEDRUCKT IN DER REICHSDItUCKEREt.BERLIN PRINTED IN THE REICHSDItUCKEREt.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. in OFFENBACH a. M.in OFFENBACH a. M. Handschleifvorrichtung für Spiralbohrer.Hand grinding device for twist drills. Der Spiralbohrer α ist in den Handgriff b eingeklemmt. Dieser Handgriff b hat den Führungsblock c, von dem zwei gegenüberliegende Seiten genau auf die Leitcurve d passen, während der Bohrer α vorn in dem Kugelgelenk e ruht.The twist drill α is clamped in the handle b. This handle b has the guide block c, two opposite sides of which fit exactly on the guide curve d, while the drill α rests in the front of the ball joint e. Drückt man nun den ganzen Apparat so weit nach vorn, dafs die Bohrspitze gegen die Schmirgelscheibe/ drückt, und fährt mit dem Führungsblock c wiederholt an der Leitcurve d entlang, so beschreibt die Bohrspitze α einen solchen Weg auf der Schmirgelscheibe/, dafs ein genauer Hinterschliff erzielt wird. Ist so die eine Schneide fertig, ■ dann dreht man den Griff 6 um i8o° um seine Achse und fährt mit der entgegengesetzten Seite des Führungsblockes c an der Leilcurve d entlang und erhält auf diese Weise die zweite Schneide des Bohrers α mit genau demselben Hinterschliff als die erste Schneide.If one now pushes the whole apparatus forward so far that the drill tip presses against the emery disk / and moves the guide block c repeatedly along the guide curve d , the drill tip α describes such a path on the emery disk / that a precise relief cut is achieved. When one cutting edge is finished, ■ the handle 6 is then rotated around its axis by 180 ° and the opposite side of the guide block c moves along the rope curve d and in this way the second cutting edge of the drill α is obtained with exactly the same relief as the first edge. Paten τ-Anspruch:Sponsorship τ claim: Ein Handschleifapparat für Spiralbohrer, bei welchem durch das Kugelgelenk e und die Leitcurve d der in dem Handgriff b geklemmte ; Bohrer α zu einer solchen Bewegung auf der Schmirgelscheibe/ gezwungen wird, dafs dadurch ein genauer Hinterschliff, und zwar für beide Schneiden derselbe genau diametral : gegenüberliegende erzeugt wird. ; VA hand grinder for twist drills, in which by the ball joint e and the guide curve d the clamped in the handle b ; Α drill to such a movement on the sanding / is forced, characterized DAF a precise relief, and indeed for both of cutting the same exactly diametrically: opposite is generated. ; V
DENDAT59734D Hand grinding device for twist drills Expired - Lifetime DE59734C (en)

Publications (1)

Publication Number Publication Date
DE59734C true DE59734C (en)

Family

ID=333928

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT59734D Expired - Lifetime DE59734C (en) Hand grinding device for twist drills

Country Status (1)

Country Link
DE (1) DE59734C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1502542B1 (en) * 1965-04-13 1970-05-14 Lock Louis Henson Twist drill holding device for grinding the two cutting edges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1502542B1 (en) * 1965-04-13 1970-05-14 Lock Louis Henson Twist drill holding device for grinding the two cutting edges

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