Transmission Housing NC Machining Process Design And Analysis Of Quality Control

With the development of national economy, improvement of people’s livingstandard, China’s market demand for cars has also accelerated growth, In2010reacheda growth spurt.While the car and its component function, stability, qualityrequirements are increasingly high, In order to meet the market demand and enhancemarket competitiveness, Product update cycle becoming shorter and shorter, Thecomplexity of the product gradually improve.In the fierce competition in the market,How to change the market demand for rapid response.Meet the many varieties, largequantity, high efficiency, low cost production needs are parts processing productionline design and planning is important to consider the problem of.In order to high-speedCNC machining centers, use technology of high speed cutting line NC flexibleproduction line technology has become the development direction of large quantities ofmachining, which with a high degree of automation, high efficiency, high flexibilityand other characteristics commonly used in international, the domestic auto partsindustry.The issue according to company product planning, based on actual production,combined with domestic and foreign engine parts manufacturing industry presentsituation and the trend of development, the company BS10-5series of transmissionhousing production and construction feasibility analysis, through the study of theflexible production line and high speed cutting technology in machining oftransmission case of application, process design and product quality evaluation of.The shell of the transmission housing of the machining process of in-depthstudy, and around the transmission housing shell processing method for shell, as the most typical engine thin wall box features, analysis of its product processingtechnology feasibility, determine the process, make process and production layout.Focus on high speed cutting technology were studied, with the high speed cuttingtechnology, process design, comprising a casing machine positioning datum selection,plane and the bearing hole processing method, to determine the equipment selection,cutting tool material selection and structure design, fixture to determine and cuttingparameters selection, the processing precision of how assurance.In conjunction withthe process and process design, has completed the processing technology analysis andman-hour calculation, to determine the production rhythm and actual productivecapacity.Secondly, this paper completed the program design, product into the experimentalprocess, on the quality of the product was analyzed, on the part of productcharacteristics determine the rectification measures, such as the shell wall thin,complex interior structure, in the cutting, clamp is produced when the workpiecedeformation and vibration, direct impact on the parts of the plane, surface roughnessdegree, bearing the roundness of holes and a long hole straightness and some othershape and position tolerance.In order to solve the gearbox shell deformation and vibration problems, timelyadded to the fixture support, in reducing workpiece barotrauma of the premise, as faras possible to choose housing suitable position (such as reinforcing intensive officeetc.) carried by the support and the pressing, reasonable distribution of cuttingquantity.In this paper, according to the technical requirements of the product and processnorms determine the machine type, and consider the shell shape complexity,processing and machining precision, conditions, determine the spindle speed range,table size, the capacity of the tool storage etc. Focus on reducing the number of theworkpiece clamping, it can eliminate the two clamping workpiece positioning error,ensure machining accuracy of workpiece, ultimately determine the surrounding series horizontal machining center, and equipped with two automatic exchange table tray,and can rotate around the rotary shaft rotatably fixture, can achieve a tray containingthe workpiece in processing module processing, another tray on the outside of theworkpiece handling, two simultaneously, thus shortening the processing time, improvework efficiency.This paper points out that the shell of the transmission housing machine interms of the typical characteristics of the automobile gear box, from the construction ofline planning, process flow, balance, rhythm production layout, to solve the problemsrelated to do a fairly detailed overview, is an article for automobile partsmanufacturing reference literature.