DE449906C - Switchable stop for turning benches - Google Patents

Description

GERMAN EMPIRE

ISSUED SEPTEMBER 23, 1927

REICH PATENT OFFICE

PATENT LETTERING

CLASS 49 a GROUP 1

L 6647s 1149 a Date of the announcement about the grant of the patent: S. September ig2j.

Ludw. Loewe & Co. Act-Ges. in Berlin.

Switchable stop for lathes. Patented in the German Empire on August 7, 1926.

With the so-called stop turning

Lathes, the carriage carrying the turning tool is driven in such a way that it can run without Danger to the machine by running counter to a fixed stop on an exactly determinable point can be stopped. It is known the way of the sledge to be limited by making gauge blocks by hand according to the required path length, d. H. Measuring pieces of the greatest accuracy

Claims (1)

speed, in front of a stop attached to the lathe bed. For work pieces, which require frequent changes in the size of the slide movement, means this procedure, despite its simplicity, wasted time because of the worker being forced is to check every gauge block carefully before placing it in front of the stop .. Often has to he can even assemble several gauge blocks for a distance. Since the name on the gauge blocks is naturally only very small is, it is easy to confuse it, e.g. B. with insufficient lighting possible. You now have several stops in order to make your work easier when the size of the slide path changes frequently a switchable holder to be attached to the machine bed, so that the worker without having to readjust the stops just by turning the entire holder for the different lengths of the slide required stops in the effective Can bring position. But with these holders you use adjusting screws, their Adjustment is known to be time consuming as soon as it is an exact measure, whereby one still has to fear that the setting will become imprecise after a while. The drawbacks mentioned are eliminated according to the invention that in the switchable stop, the usual adjusting screws are replaced by gauge blocks. Two embodiments of the subject matter of the invention are shown in the drawing. Fig. Ι shows the general arrangement of the holder on a lathe. Fig. 2 shows the view of the holder itself with a partial section according to ArB of Fig. 3 again. Fig. 3 is a cross-section according to CD of Fig. 2. Fig. 4 shows the front view and the longitudinal section and Fig. 5 is a side view of a second embodiment of the invention. When turning the stop, the moves Carriage α of a lathe automatically until it is prevented from further longitudinal movement by a fixed stop designed as a measure. Then its drive is automatically switched off in a known manner, for example by a falling screw. The stop is formed by standard gauge blocks c , which are in a holder? are housed. In the embodiment shown in FIGS. 2 and 3, the holder d, which is similar to a turret head, rotatably surrounds a guide disk / set up for attachment to the lathe bed e. It has recesses g for receiving the end mass c, which are secured by a cover plate A. The end mass can of course also be fastened by means of fastening elements that are special for each dimension. To facilitate the adjustment, the holder carries a handle / and locking devices (not shown) between the parts d and /, which secure the holder <2 in the specific positions. The axis of rotation of the holder can be in any direction; Of course, it is only necessary that the gauge blocks lie in the direction of movement of the slide. gene. In the embodiment shown in Figs. 4 and 5, the invention is the holder? not rotatable, but displaceable at right angles to the direction of movement of the slide α. It consists of a plate with recesses g for receiving the final dimensions c, which slides in the part / and can be fixed by a locking pin k which is expediently under spring pressure. Here, the carriage a is provided with a shoulder t, as can be seen in Fig. 4. The illustrated embodiments show devices that have to be set manually by the worker. Without difficulty, however, you can also create a connection between the carriage «and the holder d in order to use this automatically, e.g. B. when the slide is falling to advance one division. P Λ T E N T AiNSI'RUCll: Switchable stop for lathes, characterized by the replacement of the otherwise usual adjusting screws through gauge blocks. 1 sheet of drawings.