Skiving is rather complicated, not for the tapered shaft but for the tapered hole, so I will only address skiving a tapered hole, using the pitman arm as an example. If the end of the shaft is tapered, milling is used, and if the mating hole is tapered, the procedure is completed by swaging, and this operation is called skiving. The shaft is machined with conventional milling, while broaching is used to machine the spline in a hole. If the shaft and the mating hole are cylindrical, it’s called a spline. An example is the mating between the motor shafts and the hubs of windshield wipers on a car. Skiving is the process of machining or forming serrations (like gear teeth) on a shaft or a hole to transfer torque between mating parts. How do I calculate the required tonnage and force?Ī: To answer your question, I first need to explain the skiving process, which would be used to produce a pitman arm. We are trying to size the press for the swaging operation. The material is a bainitic microalloy steel forging with Brinell hardness from HB 229 to 285. Q: I am quoting a swaging application for a pitman arm part. The starting diameter of the straight hole is chosen so that the volume of the displaced material from the top is equal to the filled material in the bottom.
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