DE404956C

DE404956C - Schraemmaschine with swivel head

Info

Publication number: DE404956C
Application number: DEC32207D
Authority: DE
Original assignee: Cowlishaw Walker and Co Ltd
Current assignee: Cowlishaw Walker and Co Ltd
Priority date: 1921-06-10
Filing date: 1922-06-03
Publication date: 1924-10-23

Description

Beim Betrieb von Schrämmaschinen mit Schwenkkopf war es bisher meist üblich, die schwingende Bewegung des Schrämarmes vermittels einer mit ihr verbundenen Handhabe hervorzurufen.When operating cutting machines with a swivel head, it was usually customary to use the swinging movement of the cutting arm by means of a handle connected to it to evoke.

Man hat zwar auch bereits versucht, die schwingende Bewegung des Schrämarmes mit Hilfe maschineller Mittel, z. B. mit Hilfe von Klinkwerken, hervorzurufen. Aber die zu diesem Zwecke, z. B. für Kettenschrämmaschinen, vorgeschlagenen Konstruktionen waren äußerst verwickelt und erforderten eine große Anzahl Zwischenglieder, um den Antrieb in die ausschwingende Bewegung der Kette umzusetzen.One has already tried the swinging movement of the cutting arm with the help of mechanical means, e.g. B. with the help of clinker works. But the for this purpose, e.g. B. for chain cutting machines, proposed constructions were extremely intricate and required a large number of links to drive them to convert into the swinging movement of the chain.

Nach vorliegender Erfindung wird die Schwenkbewegung des Schrämarms bei Stangen- oder Kettenschrämmaschinen mittels eines Klinkwerks in einfacher Weise unter Anordnung der Schwenkwelle neben der Antriebswelle in folgender Weise bewirkt:According to the present invention, the pivoting movement of the cutting arm is at Bar or chain cutting machines by means of a ratchet mechanism in a simple manner Arrangement of the swivel shaft next to the drive shaft has the following effect:

In den beiliegenden Zeichnungen gibtIn the accompanying drawings there

Abb. ι eine Ansicht des Antriebs in seinem Gehäuse. Der Gehäusedeckel ist abgenommen.Fig. Ι a view of the drive in its housing. The housing cover is removed.

Abb. 2 ist ein Schnitt auf der Linie 2-2 von Abb. 1.Fig. 2 is a section on line 2-2 of Fig. 1.

Abb. 3 ist ein Schnitt auf der Linie 3-3 von Abb. 1.Fig. 3 is a section on line 3-3 of Fig. 1.

Abb. 4 ist ein Schnitt auf der Linie 4-4 von Abb. 1.Figure 4 is a section on line 4-4 of Figure 1.

Mit 10 ist ein Teil des Schrämmaschinengehäuses bezeichnet. In ihm ist eine Welle 11 gelagert (s. Abb. 1 und 4). Dieselbe kann irgendwie in zweckmäßiger Art an-With 10 a part of the cutting machine housing is referred to. There is a wave in him 11 (see Fig. 1 and 4). It can somehow expediently be

Claims

be driven, so z. B. from the main drive by a screw that is in a Worm gear engages on the shaft 11, so that the latter with relatively slower Rotation revolves. At the end of the shaft 11 hang on the eccentric pin 12 two Pawls 13, 14. The ones under the shaft 11 lying shaft 15 causes the oscillating movement of the cutting member, for. B. by a Worm that engages teeth on the circumference of the swivel head. On the wave 15 sits a ratchet wheel i6, from the two pawls 13, 14 can only ever bring one or the other into engagement with the ratchet wheel will.

The control of the pawls is provided by a pendulum member 17 which sits freely rotatably on the hub 18 of the wheel 16 (see Fig. 3). On one side of the link 17 there is an arm 19 which is connected to an arm 21 by a link 20 (Fig. I). This is seated on a sleeve 22 which is firmly seated on a manually controlled shaft 23. The end of this shaft goes through the box cover 24 and is provided with a handle 25 I. The pendulum member 17 carries a finger or thumb 26 which lies between the pawls 13, 14 and spreads them apart and extends parallel to the axes of the shafts 11 and 15. This finger is like that; broad that in his middle position he is the; holds both pawls safely out of engagement with the ratchet wheel when they vibrate. If the finger swings to one side or the other (see Fig. 1), it allows one pawl to engage the ratchet wheel and at the same time prevents the other from doing so. The pendulum member 17 also carries an extension 27 which lies under the gear 16 and serves as a mounting bearing for two springs 28, 29 which press on the sides of the pawls 14, 13 according to the position in which they engage the ratchet wheel . The disengagement of a latch with the finger. 26 therefore takes place against the action of the spring in question.

The different parts are functional j ζ. B. housed in a flat box,! which is attached to the side of the gear box of the cutting machine. The from! Hand operated shaft 23 expediently extends from one side of the gear box; through to the other side, where with a handle, similar to the handle 25, j can be seen, so that the swivel drive can be controlled from either side.

When this device is in operation, that is, when the cutting machine is working, it is running the shaft n around, and the pawls 13, 14 go back and forth here. If the inclined member is to be set in vibration, the handle 25 and thus the Shaft 23 rotated in one direction or the other, through the member 20, the rotary valve 17 on one or the other Side to lay. One or the other pawl is thereby connected to the ratchet wheel 16 in Connected. As a result, the ratchet 16 and thus the shaft 15 and the cutting arm then gradually swung in one direction. To the swaying To stop or reverse movement, it is only necessary to turn the handle 25 " and thus the finger 26 of the oscillating member 17 in its middle position or on to judge the other side. Do you want the swivel head for some reason Hand operate, the finger 26 is placed so that it disengages both pawls with the ratchet wheel. Then a key or a handle can be used the box cover 24 excellent square end 30 of the shaft 15 is placed will.

Pat ε nt-An Proverbs:

i. Cutting machine with swivel head and ratchet mechanism to swing out the Cutter arm, characterized in that on an eccentric pin one driven Two ratchet arms hang on the shaft and a sliding mechanism that can be rotated by hand against spring pressure over a ratchet the pivot shaft are spread so that either both pawls at their Vibrations remain out of engagement with the ratchet or that only one or only the other of the vibrating. The ratchet turns the ratchet wheel step by step and thereby swivels the cutting arm to lower it.

2. Klinkwerk according to claim 1, characterized in that the expanding piece sits loosely rotatable for the pawls on the ratchet hub or the swivel shaft.

1 sheet of drawings.