Oil separator used for hydraulic index chuck

Abstract

The invention discloses an oil separator used for a hydraulic index chuck. The oil separator used for the hydraulic index chuck comprises a shell and a rotating shaft arranged in the shell, a plurality of oil outlet cavities are formed in the side wall of the shell, and a plurality of oil outlet holes are formed in the rotating shaft and matched with the oil outlet cavities. The oil separator is characterized in that a through hole is axially formed in the shell, the rotating shaft is arranged in the through hole in a rotatable mode, the oil outlet cavities are communicated with the through hole, an oil seal is arranged between the rotating shaft and the inner wall of the through hole, and an oil seal is arranged between every two adjacent oil outlet cavities. The oil separator has the advantages that the structure is simple, machining difficulty is reduced, manufacturing cost is saved, a complex assembly technology is omitted, meanwhile, the oil seals are arranged between the adjacent oil outlet cavities, so that the seal effect is enhanced, internal leakage of oil is effectively reduced, pressure losses in a hydraulic loop are reduced, and efficiency of a hydraulic system is ensured.

Description

technical field [0001] The invention relates to a hydraulic component, in particular to an oil separator for a hydraulic indexing chuck. Background technique [0002] At present, oil separators for hydraulic indexing chucks mainly include copper alloy bushings and rotating shafts arranged in the copper alloy bushings. Due to the gap between the bushings and the rotating shafts, long-term use is prone to internal leakage, which makes the hydraulic pressure Loss of pressure in the circuit reduces the efficiency of the hydraulic system. [0003] In order to reduce the pressure loss, it is necessary to reduce the gap between the bushing and the rotating shaft, which will increase the friction between the bushing and the rotating shaft, and the large amount of heat generated by the friction will cause adhesion and bite on the friction pair, causing damage to the equipment Larger damage. [0004] In order to solve the above problems, the commonly used processing method at prese...

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Problems solved by technology

[0002] At present, oil separators for hydraulic indexing chucks mainly include copper alloy bushings and rotating shafts arranged in the copper alloy bushings. Due to the gap between the bushings and the rotating shafts, long-term use is prone to internal leakage, which makes the hydraulic pressure Loss of pressure in the circuit reduces the efficiency of the hydraulic system

[0003] In order to reduce the pressure loss, it is necessary to reduce the gap between the bushing and the rotating shaft, which will increase the friction between the bushing and the rotating shaft, and the large amount of heat generated by the friction will cause adhesion and bite on the friction pair, causing damage to the equipment major damage

[0004] In order to solve the above problems, the commonly used processing method at present is: use the precision grinding technology of the inner hole of the bushing to reduce the gap and reduce the risk of adhesion and seizure, but this technology has high processing cost and difficult process

In addition, the copper alloy bushing needs to be assembled into the outer casing of the oil separator by pressing in, which requires high assembly precision and makes assembly difficult.

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