DE909447C - Method and device for the production of clutch teeth on tool and machine parts of all kinds, in particular on bulky and thin-walled parts - Google Patents

Description

Method and device for the production of coupling teeth on tool and machine parts of all kinds, especially on bulky and thin-walled parts The invention relates to a method and a device for carrying out the method for the cheaper production of clutch teeth in the manner of the well-known hi, rth gearing on lightweight components for aircraft and cars, on levers, tools, vehicles, power and work machines The like. In particular, the method for production is suitable of clutch teeth on very bulky or thin-walled parts where an attachment of clutch teeth was previously impossible. Instead of clutch teeth in most cases as before to produce by means of milling machines, according to the method according to the invention, the Coupling teeth generated by stamping rollers. This happens in such a way that toothed.e Embossing rollers inevitably on flat surfaces under pressure on a prescribed Circle can be rolled around, removing the clutch teeth directly from the flat surface can be worked out without cutting. The workpiece and the tool with the embossing rollers will expediently clamped in a drill or lathe. The Fräsv experience requires a relatively long time. The method according to the invention only requires a small fraction of the working time of the previous milling process. Instead of an expensive milling machine there is only a relatively cheap tool and an ordinary drill or lathe od. dg1. necessary.

Another gain in time with the new process is that the In most cases, the workpiece does not need to be clamped when gearing as with milling, but z. B. only loosely on the drill table against a stop is placed.

A further gain in time is achieved by the fact that for the clutch teeth no protruding surface or hub as needs to be created for milling, but that the clutch teeth are stamped out of flat, unprepared surfaces or can be rolled out.

Of course, a protruding surface can also be used also effortlessly roll out teeth.

Coupling teeth can even be rolled into screw bolt heads, when the shank of the rolling tool is hollow.

Another advantage of the new process is that it is also strong bulky parts, sometimes even levers several meters long or places inside Very large areas, even if they are recessed, provided with coupling teeth while there are only relatively small parts on the milling machine let interlock, because when turning the milling machine part head on which they are excited, are not allowed to clink anywhere.

Attempts to stamp clutch teeth with an ordinary die to want to fail mostly because the parts at the very high required Pressure can be greatly deformed, what with the low pressure that the new process needed; does not occur.

The well-known casting process for clutch teeth is only for cast parts applicable.

The new method allows significant weight savings z. B. in aircraft and. Automobile construction in that it allows torques through quickly and Coupling teeth that can be produced cheaply and by means of only one screw or rivet can be safely transferred from thin-walled, lightweight parts.

The procedure should be based on the schematic drawings in the following explained.

The workpiece a (Alb. I and 2), which are provided with coupling teeth should, z. B. placed on the table b of a drill against a stop c (fig. i and 2). Then the rolling tool f inserted into the rotating drill spindle d is clamped, with light pressure in the direction of arrow z against the one to be interlocked Workpiece a guided.

As a result, the embossing rollers, which are provided with corresponding teeth, roll e repeatedly around the workpiece a like a planet under low pressure, where their embossing teeth are pressed into the workpiece material, which over the Flächev (Fig. 6) swells out and to coupling teeth w (Fig. 6, 7 and 2) according to the Embossing roller tooth shape y (Fig. 4) is formed.

The rolling tool (Fig. I and 2) consists of a spindle f, which has one or more transverse axes g. On these axes: g there are the embossing rollers e, which are mounted so that they can be shifted outwards. The rolling tool can 'expediently have a guide pin la (Fig. I and 3) or a hole x (Fig. 5), the embossing rollers e serving as a guide. Fig. 3 and 4 show schematically a rolling tool in which the embossing rollers e are inevitably passed through the intermediate gear wheels Z and the fixed guide wheel m . Idler m is held in place by stop lever q and stop r . This inevitability is necessary for larger numbers of clutch teeth to reliably achieve the desired number of teeth.

The effect is as follows; The rotating rolling tool spindle za (Fig. 3 and 4.) drives through its intermediate gears l as a result of the fixed idler wheel m to the embossing rollers e that mesh with them, the axis g of which as well as the intermediate wheel axis p are firmly connected to spindle n. The meshing gears force the embossing rollers e to run a planetary gear and the certain transmission ratio and thus the fixed workpiece a, on which they roll under pressure, the certain number of coupling teeth.

The number of teeth of the stator m is the same as in Fig. 3 and 4 Number of clutch teeth.

According to Fig.5, a gear ratio of the teeth of the number of teeth of the stator m must be correspondingly larger than the number of clutch teeth.

Fig. 5 also shows an inevitable rolling tool similar to Fig. 3, only its spindle has a bore x for the purpose of receiving z. B. a screw bolt shank i, in whose head support surface t coupling teeth are rolled up.

The screw bolt i is on the drilling machine table bi or in the lathe chuck clamped.

In order to provide smaller collar surfaces with coupling teeth, the Embossing rollers e arranged within the bore x (Fig. 5) of the hollow rolling tool spindle.

To prevent the embossing rollers e and gears l and m (Fig. 3 and 4) from being damaged by chips that might get between the teeth, it has been shown to be effective to have the intermediate gears l (Fig. 4) with a tooth pitch twice as large as the To provide embossing rollers, so that any chips can escape into the large intermediate gear gaps (Fig. 4). The Leitradm can also have the large teeth.

A great step forward is achieved through role e2 (Fig. 6): You is provided with the groove e3 on the circumference. Embossing teeth can also be present in this groove which protrude from the groove according to the coupling tooth shape. because the groove it is narrower than the embossing teeth t on the embossing roller e are created when Roll coupling teeth that are shorter at the head, corresponding to groove e3, and at the tooth base are longer, corresponding to the length of the marking roller tooth t.

This creates the very important longitudinal play of the clutch teeth created, despite the fact that both coupling halves are toothed with the same tool.

This game e5 leaves large manufacturing inaccuracies in the interior and Outside diameter of the coupling teeth without deteriorating the quality of the coupling.

The circumference e4 of the roller e2 also forms a depth stop and also prevents the formation of burrs when rolling.

The wide embossing roller e can also have stop disks on its sides have the same diameter as e4. As a result of these precisely working depth stops you can adjust the depth of the coupling teeth so that the uriverzahnten Surfaces v (Fig. 6) of the coupling halves touch to accommodate large axial Powers.

For the production of very wide coupling teeth one can for the purpose of compensation ! the clutch tooth pitch differences between their inside and outside diameter form the embossing rollers e1 (Fig. 8) conically.

In these cases, the coupling teeth can inevitably be made with narrower ones Pre-roll cylindrical embossing rollers and free-running with conical embossing rollers ready. rumble.

Claims (7)

PATENT CLAIMS: i. Process for the production of clutch teeth in the manner of the well-known Hirth serration on all types of tool and machine parts, especially on bulky and thin-walled parts, characterized in that on flat surfaces of said parts through the teeth of embossing rollers clutch teeth can be generated by placing the embossing rollers on a prescribed circle under pressure be rolled around until the teeth are formed. 2. Device - for execution of the method according to claim i, characterized in that on a drive spindle (f) Arms (g) are provided 'on which embossing rollers (e) are rotatable in equal radial directions Distances from the axis of rotation (Fig. I and 2). 3rd embodiment of the Device according to claim 2, characterized in that the embossing rollers (e) through special gear wheels (l), also mounted on arms (p) of the drive shaft, are driven will. q .. Embodiment of the device according to claim 3, characterized in that that the number of teeth of the embossing rollers (e) is twice as large as the number of teeth of the driving gears (l). 5. Apparatus for performing the method according to claim i, characterized in that the drive spindles (f or n) have a guide pin (h) are provided, which is safely guided in a hole in a base. 6th embodiment the device according to one of claims i to 5, characterized in that the Drive wheels (4 mesh with the teeth of a fixed circular Ring gear (m), so that the gears (e) inevitably in the manner of planet gears are driven and always the same number of clutch teeth from the flat Surfaces is rolled out. 7. Embodiment of the device according to one of claims 2 to 6, characterized in that the drive spindle (s, Fig. 5) is hollow and that the embossing rollers (e) with the drive wheels (4 in the interior of the hollow spindle (s) are arranged B. Embodiment of the device for carrying out the method according to claim i, characterized in that, in addition to the drive gear wheels for the embossing rollers in the same plane of rotation, one or more rotatable arms are also mounted on one or more arms Rolling rollers (e @) for the purpose of achieving longitudinal play (es) of the coupling teeth to prevent the formation of burrs and for possible simultaneous formation of a depth stop (e4) is or are, which is or are provided with a groove (e3) ( Fig. 6) g. Device for carrying out the method according to Claims 1 to 8, characterized in that the embossing rollers (e1, Fig.8) for the purpose of compensating ung on the coupling tooth pitch are conical. Energized publications:. USA. Patent No. 2,110,275.