Method for machining deep hole of long-cylinder part

Abstract

The invention relates to the field of machining, in particular to a method for machining a deep hole of a long-cylinder part. The method comprises the following steps that the locating datum of the part is machined, wherein two coaxial outer circles are machined at the positions, close to the two ends, of the part, and are adopted as a locating datum plane; a lead hole is machined, wherein the lead hole must be machined before hole boring of the part to guarantee the rigidity of the part and prevent cutter back-off and cutter vibration of a cutter bit in the machining process; the size of the lead hole is equal to that of the bored aperture, and the boring cutter bit is located in the lead hole through a wood guide block. According to the method, the deep hole of the long diameter in the barrel part is effectively machined, the machining quality and machining efficiency of the inner hole are guaranteed well, the wood guide block is adopted in the machining process, and the complex guide method of adopting an abrasion-resisting filter strip is simplified, so that machining is more convenient and economical, and the machining efficiency can be improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a deep hole processing method for long cylindrical parts. Background technique [0002] Long cylinder parts are often encountered in aviation products and are difficult to process. The inner hole of this type of part has a large length-to-diameter ratio, making it difficult to process. Since parts with such a large length-to-diameter ratio are seldom processed, ordinary boring tools are used for processing, and it is found that such a method cannot be processed at all; because the boring bar is too long, serious tool vibration and tool clearance occur during processing, resulting in internal parts. The hole size and roughness cannot meet the requirements, and the processing cannot continue, which has a serious impact on production; in this case, it is urgent to find a solution to deep hole processing under the existing processing conditions to ensure that the part smooth pro...

AI Technical Summary

Problems solved by technology

Generally, the holes are drilled first, then reamed and bored. When the precision requirements are high or the roughness requirements are low, reaming and grinding are also required. These processing methods can meet the required requirements. However, the processing of deep holes is very difficult. Difficult to use these processing methods to meet the requirements

When boring, due to the long boring bar, the rigidity will be very poor, and the phenomenon of tool letting and vibrating will occur, so that the processing quality of the hole cannot be guaranteed, or even cannot be processed.