机械专业毕业设计外文翻译--切削加工新概念(编辑修改稿)

机械专业毕业设计外文翻译--切削加工新概念(编辑修改稿)内容摘要：

cutting, but uses the cutting tool, the equipment and the cutting specifications and so on has the characteristic respectively. The lumber product machining mainly carries in each kind of joiner39。 s bench, its method mainly has: The saw cuts, digs cuts, the turning, the milling, drills truncates with the polishing and so on. The plastic rigidity is worse than the metal, the easy bending strain, the thermoplastic thermal conductivity to be in particular bad, easy to elevate temperature the cutting plastic, suitably with the highspeed steel or the hard alloy tools, selects the small to feed quantity and the high cutting speed, and uses pressed air the cutting tool is sharp, the angle is appropriate, may produce the beltshaped scrap, easy to carry off the quantity of heat. Glass (including semiconducting material and so on germanium, silicon) but degree of hardness high brittleness is methods and so on glass machining monly used cutting, drill hole, attrition and thickness in three millimeters following glass plates, the 5 simple cutting method is with the diamond or other hard materials, in glass surface manual scoring, the use scratch place stress concentration, then uses the hand to break off. To the marble, the granite and the concrete and so on the hard material processing, mainly uses methods and so on cutting, turning, drill hole, shaping, attrition and cutting the available circular saw blade adds the grinding pound and the water。 The outer annulus and the end surface may use the negative rake the hard alloy lathe tool, by 10~30 meter/minute cutting speed turning。 Drills a hole the available hard alloy drill bit。 The big stone material plane available hard alloy planing tool or rolls cuts planing tool shaping。 The precise smooth surface, available three mutually for the datum to the method which grinds, or the grinding and the polishing method obtains. Cutting tool in hot strong alloy application The aviation processing also changes rapidly. For example, nickel base heatresisting alloy like several years ago the most people had not heard Rene88 now occupies to the aircraft engine manufacture uses the total metal quantity 10~25%. Has very good showing and the mercial reason regarding this. For example, these heat strong alloy will be able to increase the engine endurance moreover to permit the small engine work on the big airplane, that will enhance the bustion efficiency and reduces the operation cost. These tough good materials also present the expense on the cutting tool. Their thermal stability causes on the knife point the temperature to be higher, thus reduced the cutting tool life. Similarly, in these alloy carbide pellet remarkably increased the friction, thus reduces the cutting tool life. As a result of changes in these conditions, can be very pleased to have processed many titanium alloys and nickelbased alloy materials C2 hard metal alloys, in the application to today39。 s cutting edge of blade to the crushing and cutting depth of the trench lines badly worn. But using the latest hightemperature processing of small particles hard metal alloys to be effective, cutlery life improved, but more importantly to enhance the reliability of applications in hightemperature alloys. Small particles hard metal than traditional hard metal materials higher pression strength and hardness, only a small increase in the resilience of the cost. And resulted in high temperature alloy processing than traditional hard metal resistance mon failure mode more effective. PVD (physical gas phase deposition) coating also by certificate effective processing heatresisting alloy. TiN (titanium nitrides) the PVD coating was uses and still was most early most receives wele. Recently, TiAlN (nitrogen calorization titanium) and TiCN (carbon titanium nitrides) the coating also could very good use. In the past the TiAlN coating application scope and TiN pared the limit to be more. But after the cutting speed enhances them is a very good choice, enhances the productivity in these applications to reach 40%. On the other hand, is 6 decided under the low cutting speed in coating superficial operating mode TiAlN can cause to accumulate the filings lump afterwards, micro collapses with the trench attrition. Recently, used in the heatresisting alloy application material quality already developing, these coating but became by several binations. The massive laboratories and the scene test has already proven this kind of bination and other any kind of sole coating pares in time the very wide scope application is very effective. Therefore aims at the heatresisting alloy application the PVD pound coating possibly to bee the focal point which the hard alloy new material quality research and development continues. With the MTCVD coating, the coa ting ceramics gather in the same place, they hopefully bee a more effective processing to research and develop newly are more difficult to process the work piece material the main impact strength. Dry processing Including the refrigerant question is technical and the mercial expansion industrial production tendency another domain which the cutting tool makes. North America and the European strict refrigerant management req。