DE449855C - Process for the production of a one-sided helical toothing for gears of large width with central bearing - Google Patents

Description

The invention relates to a method for producing single-sided helical gearing for Large-width gears that have special central bearings when transmitting extremely high levels of power in order to avoid deflection of the shaft and to work smoothly and precisely to. reach.

The production of flawless, one-sided helical teeth for wide tooth

xo wheels with center bearing is having great difficulty connected and only possible if the milling cutter can be milled through without interruption, but this is due to the bearing in the Middle is not easily feasible.

This is achieved according to the invention in that the bearing point for the central bearing after creating a continuous toothing by removing the toothing in the middle, so that the milling cutter can run through ao without interruption. The gear can, like usually to be made from the whole. It is then interlocked across the entire width and the center bearing subsequently screwed in. Should the teeth be made of special material as are produced, the one that is shrunk onto the full body of the gearwheel The gear rim is toothed over the entire width and the center bearing is subsequently screwed in. However, since the subsequent screwing in, tensions can be triggered in the shrunk-on part, which is easy

a twist of the two. Gear rim parts as a result, according to the further invention, the center bearing is screwed in beforehand and the ring gear made of two parts and shrunk onto the wheel body so that it extends over the center bearing and only a very small gap remains. The protruding parts are then after Machining the teeth removed. aside from that

ίο you will still find the gap between the two Set off toothed rings in the area of the teeth or run them at an angle to get a better result To achieve work of the cutter.

In the drawing, the manufacturing method according to the invention is explained in an example for a gear, namely Fig. Ι shows a section through the Zahni * ad and Fig. 2 shows a section through the ring gears. The gear ι has the lateral bearing points 2 and 4 and also a central bearing point 3. The two ring gear parts 5 and 6 are shrunk onto the gear body so that only a very small gap remains in the area of the central bearing point 3, which allows the milling cutter to be milled through the one-sided helical toothing over the entire width of the gear is easily permitted. After the helical toothing has been cut, the protruding gear rim pieces b are removed from the gear rim 5 and c from the gear rim 6. A release of shrinkage stresses is not possible here and a twisting of the sprocket parts

locked out. The ring gears 5 and 6 are also designed in this way on their shock waves that the gap is shifted within the gums (Fig. 2). This will the milling cutter guidance is improved and a perfectly flawless toothing is guaranteed perform.

Claims (3)

Patent claims: 1. Process for the production of a one-sided helical toothing for gears of great width, in which a special central bearing is provided for support is, characterized in that the bearing point for the central bearing after generating a continuous toothing is made by removing the toothing in the area of the center bearing. 2. The method according to claim 1 for gears with a shrunk-on ring gear, characterized in that the bearing point for the center bearing is first made on the wheel body and then two gear rings are shrunk so that only a very small gap remains between them, and that the over the center bearing point "Reaching pieces of wreath are removed after completion of the Zälme. 3. Embodiment of the method according to claim 2, characterized in that the gap between the toothed rims in the area of the teeth is inclined or offset (Fig. 2). Fig. 5
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