Key points of mechanical fitter assembly technology

Throughout the entire process of mechanical assembly, various problems often arise, and fitters need to take targeted technical measures to solve them based on actual problems. The marking tools used by fitters mainly include marking needles, marking needle discs, and marking gauges; The main types of chisel tools are hand hammers and chisels; The filing tool used by the fitter has various types of hammers and knives; Sawing tools include saw bows and saw blades; The tools used by bench workers for hole processing are mainly divided into Fried Dough Twists drills and reamers; The tools used for tapping and threading are mainly divided into taps, dies, or cutters; There are also scraping tools such as flat scraper and curved scraper. The commonly used measuring tools for fitters include steel rulers, blade rulers, vernier calipers, and micrometers. However, in the actual operation process, there are similarities between planar marking and mechanical projection patterns. The difference between the two is that planar marking mainly uses marking tools such as marking needles and gauges to draw in the plane of metal materials. The marking task includes both planar marking and three-dimensional marking. Plane marking requires drawing lines in two different directions, while three-dimensional marking requires drawing lines in three different directions. During the operation, a directional line bixu has a corresponding marking reference, so flat marking needs to have two corresponding marking references, and three-dimensional marking needs to set three corresponding marking references. The selection of the marking benchmark is directly related to the accuracy of the marking and the quality of the operation, so Bixu attaches great importance to it in practical operation. Only after selecting the correct marking benchmark can we ensure the accuracy and reliability of the marking operation. Marking provides important basis for processing, and the marking operation is accurate in size, clear in lines, and precise in precision. In addition, during the three-dimensional marking operation, the three lines in the length, width, and height directions should be kept perpendicular to each other. When there are errors in marking, it may lead to the scrapping of the workpiece. Therefore, when choosing marking, bixu should determine the points, lines, and surfaces of the workpiece as the basis for marking, clarify the corresponding dimensions and specific positions of other parts on the workpiece, and select the points, lines, and surfaces as important benchmarks for marking. It should be noted that the marking benchmark needs to meet the design requirements. When selecting the marking reference, bixu

Taking into account various factors such as the workpiece and processing technology, determine the actual dimensional and placement benchmarks for marking.