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高压压气机上用的双头螺栓,精度要求很高,螺纹部分要求2级精度,齿面光洁度要求。螺栓材料是CT30,硬度H_B=180。过去我们加工出来的螺栓,总是达不到要求。后来在苏联工艺专家И·В·普多沃洛维奇同志的指导下,经过多次试验,终于制造出合乎要求的2级精度螺丝。我们主要是从以下几方面着手的: 1.机床:加工前必须对机床进行调整,使刀架间隙和导轨间隙尽量消除。 2.工件:对车丝的基准——顶尖孔
High-pressure compressor with double-headed bolts, high precision, threaded part of the 2-level accuracy, tooth surface finish requirements. Bolt material is CT30, hardness H_B = 180. In the past we bolt out, and always fail to meet the requirements. Later, under the guidance of Comrade И · ŽPodovlovic, a Soviet craft expert, after many tests, it was finally made to produce a satisfactory level 2 precision screw. We mainly proceed from the following aspects: 1. Machine tool: Before processing the machine must be adjusted so that the gap between the tool holder and the guideway gap to eliminate as much as possible. 2. Workpiece: the benchmark for the wire - the top hole