A new process of on-line turning of bearing inner ring and its inner ring jacking hole fixture applied thereto

Abstract

The invention provides a novel line turning technique for an inner ring of a bearing and an inner ring hole ejecting and expanding clamp applied to the novel line turning technique. According to the technique, three independent machines are connected to form a line for machining. The technique comprises the following steps that (1) a left supporting plate of the first independent machine is used for boring a hole in the inner-diameter portion of the inner ring, and a right supporting plate of the first independent machine is used for machining an outer chamfer angle or a sealing groove in one side of the inner ring through turning; (2) a left supporting plate of the second independent machine is used for machining an inner chamfer angle on one side of the inner ring, and a right supporting plate of the second independent machine is used for machining an outer chamfer angle or a sealing ring in the other side of the inner ring; and (3) a left supporting plate of the third independent machine is used for machining a raceway of the inner ring, a right supporting plate of the third independent machine is used for machining an inner chamfer angle on the other side of the inner ring, and then turning of the whole inner ring is completed. The inner ring hole ejecting and expanding clamp comprises a spring collet, a cone ejector rod, a connection pull ring, a collet base, a flange and a pull rod. The conical surface, with the outer diameter becoming smaller gradually, of the head of the cone ejector rod makes contact with the conical surface, with the inner diameter becoming larger gradually, of the head of the spring collet in a matched mode. According to the novel line turning technique for the inner ring of the bearing and the inner ring hole ejecting and expanding clamp applied to the novel line turning technique, the machining line can be formed simply through the three independent machines, and turning of the whole inner ring of the bearing is completed through the machining line; one machine tool is omitted, the production line cost is greatly reduced, and the machining time is shortened.

Description

technical field [0001] The invention is applicable to the field of turning process of hydraulic program-controlled connection of inner ring of bearings, and in particular relates to a new technology of turning of inner ring of bearings and an inner ring jacking hole clamp applied thereto. Background technique [0002] Hydraulic program-controlled on-line turning of bearing inner ring is a very common turning process at present. Through the connection combination of a single hydraulic program-controlled machine tool, the cooperation of special fixtures and forming tools, the turning process of a ferrule is completed. [0003] The program-controlled hydraulic automatic lathe is an automatic lathe that adopts PLC program control and adopts a hydraulic system for automatic tool-feeding processing. It usually has two left and right pallets, which respectively adjust the inner diameter, chamfer, raceway, sealing groove, and stop of the inner ring of the bearing. The moving groove...

AI Technical Summary

Problems solved by technology

The traditional fixture is the vertebral body pull rod 2 tightened to expand the spring collet 1 to realize clamping. The head of the vertebral body rod 2 is protruding, and it is difficult for the tool to reach into the part to process the chamfer.

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