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Method for machining large thin-wall inclined eccentric shaft sleeve of gyratory crusher

A gyratory crusher and eccentric shaft sleeve technology, which is applied in the field of mechanical manufacturing and processing, can solve the problems of clamping variability, poor rigidity, and skewed positioning of the inner hole, and achieve the effect of ensuring accuracy and solving the problem of clamping

Active Publication Date: 2016-02-17
CITIC HEAVY INDUSTRIES CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a processing method for a large thin-walled oblique eccentric shaft sleeve of a gyratory crusher, so as to solve the problems of poor rigidity, clamping variability, and inner hole deflection existing in the processing of large thin-walled oblique eccentric shaft sleeve parts. Processing technical problems such as inaccurate positioning

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  • Method for machining large thin-wall inclined eccentric shaft sleeve of gyratory crusher
  • Method for machining large thin-wall inclined eccentric shaft sleeve of gyratory crusher
  • Method for machining large thin-wall inclined eccentric shaft sleeve of gyratory crusher

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Embodiment Construction

[0038] The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

[0039] The embodiment takes the main shaft bushing for the eccentric mechanism of a large crusher as an example; the characteristics and technical requirements of the eccentric bushing are as follows:

[0040] Eccentric shaft sleeve: weight 4264kg, material 42CrMo, external dimensions are about Φ1190×Φ850×1730, and the overall size of the forging blank is about Φ1240×Φ630×1900. The main technical requirements for processing: outer circle roughness Ra0.8, inner hole roughness Ra1.6, eccentricities at both ends are 57.85±0.05 and 41.48±0.05 respectively, the maximum wall thickness difference is 115mm, and the amount of blank material removal is very large.

[0041] The above-mentioned eccentric shaft sleeve is processed by the processing method of a large thin-walled oblique eccentric shaft sleeve of a gyratory crusher according to the presen...

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Abstract

The invention discloses a method for machining a large thin-wall inclined eccentric shaft sleeve of a gyratory crusher. The boring and turning complementation machining method is adopted, rough turning, semi-finish turning and finish turning are carried out on a workpiece many times, the end face of the workpiece is bored many times to form an eccentric inner hole alignment circle, and the inner hole center of the inclined eccentric shaft sleeve is gradually determined by combing the eccentric inner hole alignment circle machined many times, so that the design requirement for the workpiece is met. The beneficial effects that a numerical control boring machining workbench is high in rotation locating precision, vertical lathe turning efficiency, surface smoothness and the like are fully utilized in the method, and a boring and turning complementation machining mode is formed; the clamping problem of a large thin-wall inclined eccentric part is solved; and the inclined eccentric accuracy of the inner hole and the surface smoothness of the inner hole are guaranteed, and the strict requirements for the form and location tolerance between inner circles and outer circles are met.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing and processing, and in particular relates to a processing method for a large thin-walled oblique eccentric shaft sleeve of a gyratory crusher. Background technique [0002] The gyratory crusher is a representative equipment for coarse crushing of hard minerals in metallurgy, building materials, chemical industry, hydropower and other industries. The rotation of the eccentric shaft sleeve drives the crushing cone on the main shaft to make a gyratory movement in the cone cavity in the shell to squeeze the material. Splitting and bending, to achieve continuous crushing operations, with large production capacity, low unit energy consumption, stable work, suitable for crushing sheet materials and crushed materials with uniform particle size and so on. The eccentric shaft sleeve is used as the core part of the gyratory crusher, see figure 1 , the blanks are mostly made of centrifugal casting or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 刘延民祝兴华杨菲梁志理瞿新建
Owner CITIC HEAVY INDUSTRIES CO LTD
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