High precision hole system machining method

Abstract

The invention relates to a high precision hole system machining method, and belongs to the technical field of machining. According to the method, a manner that a drill and a boring cutter are combinedfor machining holes is used for machining a hole system on a workpiece, the drill is used for hole drilling in advance firstly, the hole diameters of the holes drilled in advance are 2 / 3 of the target diameter of a to-be-machined hole, then the boring cutter is used for later machining of the hole system, and meanwhile, an intermittent and jumpy method is used for machining the hole system; and specifically, the first hole system is machined firstly, a second hole located on the same diameter of a center through hole of the workpiece together with the circle center of the first hole is machined, by parity of reasoning, a next hole needing to be machined serves as a hole between two machined adjacent holes, the distances between the hole needing to be machined and the two adjacent holes are equal, the hole system is machined in this way, and therefore the balance of the workpiece in the rotating process can be guaranteed, the form and location tolerance of the overall workpiece hole system is reduced, and the machining accuracy of the workpiece is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a processing method of a high-precision hole system. Background technique [0002] In the manufacturing process of complex precision parts such as reducer housings, two workpieces are connected and fixed through the holes on the workpiece when they cooperate with each other. In order to achieve high-precision fit between the workpieces, the position and shape of the hole system on the workpiece The bit tolerance level needs to reach level 6 accuracy. The traditional way of machining ring-shaped workpieces is to rotate according to the center of the workpiece and process sequentially. However, due to the influence of thermal stress on the surfaces at both ends of the hole system during hole processing, it is easy to produce deformation, resulting in holes. The shape and position tolerance is out of tolerance. Contents of the invention [0003] In view ...

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Problems solved by technology

[0002] In the manufacturing process of complex precision parts such as reducer housings, two workpieces are connected and fixed through the holes on the workpiece when they cooperate with each other. In order to achieve high-precision fit between the workpieces, the position and shape of the hole system on the workpiece The bit tolerance level needs to reach level 6 accuracy. The traditional way of machining ring-shaped workpieces is to rotate according to the center of the workpiece and process sequentially. However, due to the influence of thermal stress on the surfaces at both ends of the hole system during hole processing, it is easy to produce deformation, resulting in holes. The shape and position tolerance is out of tolerance

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