DE444724C - Adjustable thread cutting tool with pulling cutting jaws - Google Patents
Adjustable thread cutting tool with pulling cutting jawsInfo
- Publication number
- DE444724C DE444724C DEB114966D DEB0114966D DE444724C DE 444724 C DE444724 C DE 444724C DE B114966 D DEB114966 D DE B114966D DE B0114966 D DEB0114966 D DE B0114966D DE 444724 C DE444724 C DE 444724C
- Authority
- DE
- Germany
- Prior art keywords
- cutting tool
- thread cutting
- jaws
- pulling
- adjustable thread
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
- B23G5/14—Tapping-heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Description
Das verstellbare Gewindeschneidzeug gemäß Patent 394 407 hat für jede Schneidbacke einen besonderen Anschlag. Ein solches Gewindeschneidzeug läßt sich jedoch auch mit einem für alle Schneidbacken gemeinsamen, im Kern des Gewindeschneidzeuges angeordneten Anschlag ausführen. Zwecks Verstellbarkeit der Schneidbacken ist alsdann der als Anschlag dienende Dorn kegelig ausgebildet und achsial verstellbar. Mit einem solchen ■ Gewindeschneidzeug lassen sich auch kegelige Gewinde herstellen, indem man den kegeligen Dorn als Leitdorn fürThe adjustable threading tool of patent 394,407 has one for each die special stop. However, such a thread cutting tool can also be used with a for all cutting jaws common stop arranged in the core of the thread cutting tool carry out. For the purpose of adjustability of the cutting jaws is then used as a stop The mandrel is conical and axially adjustable. With such a ■ thread cutting tool tapered threads can also be produced by using the tapered mandrel as a guide mandrel for
die Schneidbacken benutzt. used the dies.
In den Zeichnungen sind zwei Ausführungsformen eines derartigen verstellbaren Gewindeschneidzeuges dargestellt.In the drawings are two embodiments of such an adjustable thread cutting tool shown.
Die in der Ringnut α (Abb. 1) im Gewindeschneidzeugkörper b um die Bolzen c schwingbar angeordneten Schneidbacken d (Abb. 2) werden durch die Federn f, welche oben auf die auf Bolzen c angeordneten Hebel e (Abb. 3) drücken, gegen die radial im Gewindeschneidzeugkörper b angeordneten Druckstücke g gepreßt, damit die Schneidbacken d bei Nichtbenutzung des Gewindeschneidzeuges nicht flattern. Die Druckstücke gleiten an dem im Gewindeschneidzeugkörper angeordneten kegeligen Leitdorn h entlang. Beim Schneiden von Gewinden macht Dorn h die Verschiebung des Gewindeschneidzeuges nach unten nicht mit, wodurch alsdann ein kegeliges Gewinde erzeugt wird, welches dem kegeligen Leitdorn h entspricht. Dorn h ist in der Arbeitsspindel i der Maschine k (Abb. 4) senkrecht verschiebbar angeordnet. Durch Verschieben des Domes h kann der Durchmesser des Bohrkopfes verändert werden. The cutting jaws d (Fig. 2), which are arranged to swing around the bolts c in the annular groove α (Fig. 1) in the thread cutting tool body b, are counteracted by the springs f, which press on top of the levers e (Fig. 3) arranged on the bolt c the pressure pieces g arranged radially in the thread cutting tool body b are pressed so that the cutting jaws d do not flutter when the thread cutting tool is not in use. The pressure pieces slide along the conical guide mandrel h arranged in the thread cutting tool body. When cutting threads, the mandrel h does not take part in the downward displacement of the thread cutting tool, which then creates a conical thread which corresponds to the conical guide mandrel h. Mandrel h is arranged vertically displaceably in the work spindle i of the machine k (Fig. 4). The diameter of the drill head can be changed by moving the dome h.
Abb. 5 veranschaulicht das Gewindeschneidzeug zur Herstellung doppelter kegeliger Gewinde. Die Schneidbacken I sind in Hebel m eingesetzt. Der Stützpunkt für die Hebel m liegt von der Schneide der Backe I nach hinten ebenso weit entfernt, wie der Mittelpunkt des Bolzens c von der Schneide der Backe I entfernt ist. Leitdorn η wird deshalb bei dieser Ausführungsform mit dem doppelt so großen Kegelwinkel ausgeführt, als ihn das Arbeitsstück im Gewinde enthalten soll. Abb. 6 veranschaulicht die Entfernung p der Schneide der Backe I vom Drehpunkt des Bolzens c und 0 von dem Stützpunkt auf Druckstück g. Abb. 7 veranschaulicht, wie bei dieser Ausführungsform des Gewindeschneidzeuges die Druckfedern f angeordnet sind.Fig. 5 illustrates the thread cutting tool used to produce double tapered threads. The cutting jaws I are used in lever m . The support point for the lever m is just as far away from the cutting edge of the jaw I to the rear as the center point of the bolt c is away from the cutting edge of the jaw I. In this embodiment, guide mandrel η is therefore designed with a cone angle that is twice as large as that which the work piece should contain in the thread. Fig. 6 illustrates the distance p of the cutting edge of the jaw I from the pivot point of the bolt c and 0 from the support point on the pressure piece g. Fig. 7 illustrates how the compression springs f are arranged in this embodiment of the thread cutting tool.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB114966D DE444724C (en) | Adjustable thread cutting tool with pulling cutting jaws |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB114966D DE444724C (en) | Adjustable thread cutting tool with pulling cutting jaws |
Publications (1)
Publication Number | Publication Date |
---|---|
DE444724C true DE444724C (en) | 1927-05-27 |
Family
ID=6993894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB114966D Expired DE444724C (en) | Adjustable thread cutting tool with pulling cutting jaws |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE444724C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844920A (en) * | 1956-08-13 | 1958-07-29 | Glen M Calvert | Honing apparatus |
-
0
- DE DEB114966D patent/DE444724C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844920A (en) * | 1956-08-13 | 1958-07-29 | Glen M Calvert | Honing apparatus |
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