数控机床毕业设计英文翻译-数控设计(编辑修改稿)

数控机床毕业设计英文翻译-数控设计(编辑修改稿)内容摘要：

ding dimensional, geometric and surface accuracy. If the quality level after machining is poor and if it cannot meet the requirements, there will be a varying need of manual finishing work. This work produces satisfactory surface accuracy, but it always has a negative impact on the dimensional and geometric accuracy. One of the main aims for the die and mould industry has been, and still is, to reduce or eliminate the need for manual polishing and thus improve the quality and shorten the production costs and lead times. Main economical and technical factors for the development of HSM Survival The ever increasing petition in the marketplace is continually setting new standards. The demands on time and cost efficiency is getting higher and higher. This has forced the development of new processes and production techniques to take place. HSM 毕 业设计（外文翻译 ） 7 provides hope and solutions... Materials The development of new, more difficult to machine materials has underlined the necessity to find new machining solutions. The aerospace industry has its heat resistant and stainless steel alloys. The automotive industry has different bimetal positions, Compact Graphite Iron and an ever increasing volume of aluminum3. The die and mould industry mainly has to face the problem of machining high hardened tool steels, from roughing to finishing. Quality The demand for higher ponent or product quality is the result of ever increasing petition. HSM, if applied correctly, offers a number of solutions in this area. Substitution of manual finishing is one example, which is especially important on dies and moulds or ponents with a plex 3D geometry. Processes The demands on shorter throughput times via fewer setups and simplified flows (logistics) can in most cases, be solved by HSM. A typical target within the die and mould industry is to pletely machine fully hardened small sized tools in one setup. Costly and time consuming EDM processes can also be reduced or eliminated with HSM. Design amp。 development One of the main tools in today39。 s petition is to sell products on the value of novelty. The average product life cycle on cars today is 4 years, puters and accessories years, hand phones 3 months... One of the prerequisites of this development of fast design changes and rapid product development time is the HSM technique. Complex products There is an increase of multifunctional surfaces on ponents, such as new design of turbine blades giving new and optimized functions and features. Earlier designs allowed polishing by hand or with robots (manipulators). Turbine blades with new, more sophisticated designs have to be finished via machining and preferably by HSM . There are also more and more examples of thin walled workpieces that have to be machined (medical equipment, electronics, products for defence, puter parts) Production equipment The strong development of cutting materials, holding tools, machine tools, controls 毕 业设计（外文翻译 ） 8 and especially CAD/CAM features and equipment, has opened possibilities that must be met with new production methods and techniques5. Definition of HSM Salomon39。 s theory, Machining with high cutting speeds... on which, in 1931, took out a German patent, assumes that at a certain cutting speed (510 times higher than in conventional machining), the chip removal temperature at the cutting edge will start to decrease... Given the conclusion: ... seems to give a chance to improve productivity in machining with conventional tools at high cutting speeds... Modern research, unfortunately, has not been able to verify this theory totally. There is a relative decrease of the temperature at the cutting edge that starts at certain cutting speeds for different materials. The decrease is small for steel and cast iron. But larger for aluminum and other nonferrous metals. The definition of HSM must be based on other factors. Given today39。 s technology, high speed is generally accepted to mean surface speeds between 1 and 10 kilometers per minute or roughly 3 300 to 33 000 feet per minute. Speeds above 10 km/min are in the ultrahigh speed category, and are largely the realm of experimental metal cutting. Obviously, the spindle rotations required to achieve these surface cutting speeds are directly related to the diameter of the tools being used. One trend which is very evident today is the use of very large cutter diameters for these applications and this has important implications for tool design. There are many opinions, many myths and many different ways to define HSM. Maintenance and troubleshooting Maintenance for a horizontal MC The following is a list of required regular maintenance for a Horizontal Machining Center as shown in . Listed are the frequency of service, capacities, and type of fluids required. These required specifications must be followed in order to keep your machine in good working order and protect your warranty. 毕 业设计（外文翻译 ） 9 fig. 5 Daily Top off coolant level ev。