【導(dǎo)讀】成為各個發(fā)動機生產(chǎn)廠家所關(guān)注的重點零件之一。缸體的工藝特點是：結(jié)構(gòu)、形狀復(fù)雜；加工的平面和孔比較多；壁厚不均，剛度低；加工精度要求高，屬于典型的箱體類加工零件。的合理性來保證。發(fā)動機缸體機械加工工藝設(shè)計應(yīng)遵循以下基本原則：。用高效并有一定調(diào)整范圍的專用機床加工；品精度滿足缸體關(guān)鍵品質(zhì)的工藝性能和有關(guān)技術(shù)要求。心matec-30L等設(shè)備組成。電控柜，切削過程自動化完成，有自動和調(diào)整兩種狀態(tài)；子S7-200PLC系統(tǒng)控制，機床具有一定的柔性；高速立式加工中心matec-30L該加工中心主軸最高轉(zhuǎn)速9000r/min?；蛘咪摪宓模税l(fā)動機缸體采用高強度合金鑄鐵。缸體在加工前進(jìn)行時效處理，以消除鑄件內(nèi)應(yīng)力和改善毛坯的力學(xué)性能。不合理，會使加工余量分布不均勻，加工面偏移，造成廢品。全線的統(tǒng)一基準(zhǔn)。對于較長的自動自動生產(chǎn)線系統(tǒng)，由于定位銷孔在使用過程中。的磨損造成定位不準(zhǔn)確，因此，將定位銷孔分為2-3段使用。毛坯全面進(jìn)行粗加工，切去大部分余量，以保證生產(chǎn)效率；

　　

【正文】 mm/min,and foreign 20214000mm/min milling feed rate pared to far cry,to be on increasing,therefore,improve the milling feed rate,reduce overhead time is to improve the productivity of the major means of finishing a number of plane engine block when the milling feed rate to reach 2399mm/min,greatly improved efficiency。 Top surface of the cylinder milling is a key process in the process,the flatness requirements for ,the surface roughness of in the cylinder,the use of side and spindle bearing bore positioning,top,bottom and middle vagay only aperture while processing used in the processing line outside of the knife device can better meet the engine block machining accuracy。 (2) General holes machining holes in general are still using the traditional processing of drilling,expansion,boring,reaming,tapping and other craft approach. Issues in the design process of specific programs,use of coated cutting tools,cutting tools and other advanced tools within the cooling,and using a large flow of cooling systems,greatly improving the cutting speed,improved productivity。 (3) deep hole processing of the traditional processing method is used to grade twist drill feed,low efficiency of their production,processing and quality is deep hole in the engine block processing,the use of gun drilling process。 (4) The threeaxis machining holes for the cylinderaxis machining holes holes of high precision,long working hours of the restrictive ,work arrangements,processing methods,tools and so on should be special cover preprocessing,that is,semicircular hole and the cylinder block main bearing cap of the shortage of processing,its main purpose is to remove blank margin,release stress,to prepare for the postorder processing。in crankshaft machining processing center hole,using doublesided Boring,boring the first holes in the crankshaft hole at one end to 1/2 length,and then turn 180 degrees workbench,form the other end and then bore another 1/2 length. (5) The cylinder bore machining cylinder hole cylinder machining processing is a key process in the one,under normal circumstances,the machining process as a rough boring,semifine boring,precision boring and bore wall for the early detection of casting defects,eliminate stress,should be thick c ylinder boring holes in advance。due to the structural characteristics of the different cylinder bore,must be in honing process to improve the cylinder bore surface the highvolume production,the cylinder bore honing generally use the multiaxis grinding machine or honing Automatic we use honing automatic lines,from the and testing equipment,posed of three。 (6) Cleaning cleaning isdivided into wet cleaning and dry cylinder automatic production line using a large flow of wet cleaning。 (7) Detect points outside the line detection and line detection of two kinds. Quality inspection in the engine block,according to the actual situation with lines outside the detection,the main use of coordinate measuring machine integrated measurements of the cylinder,each 200 samples 15 pieces,each class random one. Through the engine block of the structure and process characteristics of the analysis,discusses the engine block machining process design principles and basis of the choice of cutting parameters,and Uturn at high speed milling and boring,for example,design,analysis of the engine cylinder body of highspeed milling and turnover boring process,and in the processing need to pay attention to.