Machining method for bulged cavity part

Abstract

The invention discloses a machining method for a bulged cavity part. The machining method comprises the following steps: (1) clamping a round toolbar in a clamp hole, and firmly mounting a mounting handle on a tool rest of a horizontal lathe; (2) mounting and clamping a big-step bulged cavity part on the horizontal lathe and well aligning; (3) dismounting a nut, and propelling a long bolt into the inner hole of the round toolbar, wherein the long bolt sequentially drives a slider and a connecting plate to advance, so that a longitudinal toolbar and the round toolbar are longitudinally parallel, and through translation of the tool rest, a bent inner hole turning toolbar enters the inner hole of the big-step bulged cavity part; and then backing the long bolt to enable the longitudinal toolbar and the round toolbar to be longitudinally perpendicular, tightening the nut, and fixing the long bolt in the longitudinal direction; and (4) starting up the horizontal lathe, through translation of the tool rest, enabling a turning tool of the bent inner hole turning toolbar to move onto the inner surface of the bulged inner hole of the big-step bulged cavity part, performing tool setting, and then feeding for turning. The machining method is simple in tool and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment manufacturing, and relates to a processing method of a bulging inner cavity part. Background technique [0002] In equipment such as large generators, there is a hollow shaft part with a large step and a bulging inner cavity, such as figure 1 As shown, because it needs to run at high speed during the working process, it has extremely high requirements on strength and dynamic balance, so the inner cavity of the bulge is usually machined from a whole material, and it is compatible with the assembled and welded structures. In comparison, the hollow shaft of the integral bulging inner cavity also enhances the reliability of equipment operation. However, the common cavity turning method can only process the cavity with a small step, and cannot process the bulging cavity with a step size H greater than 100 mm. [0003] Therefore, developing a processing device and method for (big steps) b...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a processing method for the inner cavity parts of the bulge, which solves the problem that there is no suitable tooling in the prior art, and it is difficult to effectively turn the inner cavity parts of the large step bulge.

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