【正文】 機床：FANUC數(shù)控銑床 刀具：T01——硬質(zhì)合金端面銑刀 材料： T02——鉆頭 加工前的零件主視圖如圖1所示，零件左視圖如圖2所示圖1 加工前零件主視圖圖2 加工前零件左視圖 加工后的零件主視圖如圖3所示，零件左視圖如圖4所示。表1 工序一數(shù)控程序程序號O1000主程序程序號O1010子程序N10G54 G17 G90N10G91 G01 X317 F100N20M03 S1000N20Y59N30G00 Z50N30X317續(xù)表M05程序號O1000主程序程序號O1010子程序N40X0 Y0N40M99N50 Z300N60 F100程序號O1020子程序N70M98 P1010N10G91 G01 Z268 F100N80Z295 F100N20G41 X3 Y0 D02N90M98 P1010N30G03 I3N100G00 X0 Y0 Z320N40G03 X3 Y3 R3N110M05 M00N50G40 G01 X0 Y3N120G54 G17 G90N60G01 Z300 F2000N130M03 S1000N70M99N140G00 Z50N150X0 Y0N160300N170G01 X21 Y125N175M98 P1020N180G90 G01 X105 Y125N190M98 P1020N200G90 G01 X189 Y125N210M98 P1020N220G90 G01 X273 Y125N230M98 P1020N240G90 G01 X357 Y125N250M98 P1020N260G90 G01 X357 Y209N270M98 P1020N280G90 G01 X273 Y209N290M98 P1020N300G90 G01 X189 Y209N310M98 P1020N320G90 G01 X105 Y209N330M98 P1020N340G90 G01 X21 Y209N350M98 P1020N360G90 G01 Z320 F200N370M05N380M00專業(yè)英文翻譯NUMERICAL CONTROL TECHNOLOGY APPLYCATIONSMost automobile dngines are internal bustion, reciprocating 4stroke gasoline engines, but other types have been used, including the diesel, the rotary ( Wankel ) , the 2srtoke, and stratified charge.Reciprocating means up and down or banck and forth, It is the up and down action of a piston in the cylinder blick, or engine block. The blick is an iron or aluminum casting that contains engine cylinders and passges called water jackets for coolant circulation. The top of the block is covered with the cylinder head. Which forms the bustion chanber. The bottom of the block is covered with an oil pan or oil sump.Power is produced by the linear motion of a piston in a cylinder. However, this linear motion must be changed into rotary motion to turn the wheels of cars of trucks. The piston is attached to the top of a connecting rod by a pin, called a piston pin or wrist pin. The bottom of the connecting rod is attached to the crankshaft. The connecting rod transmits the upanddown motion of the piston to the crankshaft, which changes it into rotary motion.The connecting rod is mounted on the crankshaft with large beaings called rod bearings. Similar bearings, called main bearings, are used to mount the crankshaft in the block. Shown in Fig. 11The diameter of the cylinder is called the engine bore. Displacement and pression ratio are two frequently used engine specifications. Displacement indicates engine size, and pression ratio pares the total cylinder volume to pression chamber volume. The term stroke is used to describe the movement of the iston within the cylinder, as well as the distance of piston travel. Depending on the type of engine the operating cycle may require either two or four strokes to plete. The 4stroke engine is also called Otto cycle engine, in honor of the German engineer, Dr. Nikolaus Otto, who first applied the principle in 1876. In the 4stroke engine, four strokes of the piston in the cylinder are required to plete one full operating cycle. Each stroke is named after the action it performs intake, pression, power, and exhaust in that order, shown in Fig12.Intake stroke As the piston moves down, the vaporized mixture of fuel and air enters the cylinder through open intake valve. To obtain the maximum filling of the cylinder the intake valve opens about 10176。overlap. The inlet valve remains open until some 50176。before ., allowing the pressure within the cylinder to fall and to reduce ‘back’pressure on the piston during the exhaust stroke, and the burned gases are pushed out to prepare for the next intake intake valve usually opens just before the exhaust stroke.This 4stroke cycle is continuously repeared in every as long as the engineremains running.A 2stroke engine also goes through four actions to plete one operating cycle.However, the intake and the pression actions are bined in one seroke, and the power and exhaust actions are bined in the other stroke. The term2stroke cycle or 2stroke is preferred to the term 2cycle, which is really not accurate.In automobile engines, all pistons are attached to a single crankshaft. The more cylinders an engine has, the more power strokes produced for cach revolution. This means that an 8cylinder engine runs more smoothly bdcause the power atrokes are closer together in time and in degrees of engine rotation.The cylinders of multicylinder automotive engines arranged in one of three ways.Inline engines use a single block of 4cylinder and any 6cylinder engines are of this design. The cylinders do not have to be vertical. They can be inclined either side.Vtype engines use two equal bands of cylinders, usually inclined 60degrees or 90degrees from the cach other. Most Vtype engines have 6 or 8 cylinders, although V4 and V12 engines have been built.Horizontally opposed or pancake engines have two equal banks of cylinders 180degreeas apart. These space saving engine designs are often aircooled, and are found in the Chevrolet Carvair, Porsches, Subaus, and Volkswagens. Subaus design is liquid cooled.Latemodel Volkswagen vans use a liquidcooled version of the air cooled VWhorizontally opposed engine.譯文大多數(shù)汽車的發(fā)動機是內(nèi)燃機，往復(fù)四沖程汽油機，但是也有使用其它類型的發(fā)動機，包括柴油機，轉(zhuǎn)子發(fā)動機，二沖程發(fā)動機和分程燃燒發(fā)動機。缸體的頂部是氣缸蓋，它組成了燃燒室，缸體底部是油底殼。氣缸的直徑稱為發(fā)動機的內(nèi)徑，排量和壓縮比是兩個常用的發(fā)動機參數(shù)，排量是指發(fā)動機的大小，壓縮比是氣缸總?cè)莘e與燃燒室壓縮容積之比。進氣沖程當(dāng)活塞下移時，霧化后的可燃混合氣通過打開的進氣門進入氣缸，為了達到最大的進氣量，進氣門在活塞到達上止點前10176。打開重疊角，進氣門一直打開到活塞到達下止點充分進入混合氣之后50176。壓縮沖程活塞開始向上移動時，進氣門關(guān)閉，混合氣在燃燒室中壓縮，根據(jù)不同因素包括壓縮比，節(jié)氣門開度，發(fā)動機轉(zhuǎn)速壓力上升到約1兆帕，接近沖程頂部時，火花塞產(chǎn)生的電火花擊穿點火間隙點燃可燃混合氣。排氣沖程隨著排氣門開啟約下止點前50176。只要發(fā)動機保持運轉(zhuǎn)，每個氣缸內(nèi)四個沖程循環(huán)連續(xù)不斷地重復(fù)下去。在所用的汽車發(fā)