德国等发达国家，它们的机床改造作为新的经济增长行业，生意盎然，正处在黄金时代。由于机床以及技术的不断进步，机床改造是个"永恒"的课题。我国的机床改造业，也从老的行业进入到以数控技术为主的新的行业。在美国、日本、德国，用数控技术改造机床和生产线具有广阔的市场，已形成了机床和生产线数控改造的新的行业。在美国，机床改造业称为机床再生（Remanufacturing）业。从事再生业的著名公司有：Bertsche工程公司、ayton机床公司、Devlieg-Bullavd（得宝）服务集团、US设备公司等。美国得宝公司已在中国开办公司。在日本，机床改造业称为机床改装（Retrofitting）业。从事改装业的著名公司有：大隈工程集团、岗三机械公司、千代田工机公司、野崎工程公司、滨田工程公司、山本工程公司等。
4.2, the content of NC
4.2、数控化改造的内容
Machine tools and production line NC transformation main contents of the following:
机床与生产线的数控化改造主要内容有以下几点：
One is the restoration of the original features of the machine tools, production line of the fault diagnosis and recovery; second NC, in the ordinary machine augends significant installations, or additions to NC system, transformed into NC machine tools, CNC machine tools; its Third, renovation, to improve accuracy, efficiency and the degree of automation, mechanical, electrical part of the renovation, re-assembly of mechanical parts processing, restore the original accuracy of their production requirements are not satisfied with the latest CNC system update; Fourth, the technology updates or technical innovation, to enhance performance or grades, or for the use of new technology, new technologies, based on the original technology for large-scale update or technological innovation, and more significantly raise the level, and grades of upgrading.
其一是恢复原功能，对机床、生产线存在的故障部分进行诊断并恢复；其二是NC化，在普通机床上加数显装置，或加数控系统，改造成NC机床、CNC机床；其三是翻新，为提高精度、效率和自动化程度，对机械、电气部分进行翻新，对机械部分重新装配加工，恢复原精度；对其不满足生产要求的CNC系统以最新CNC进行更新；其四是技术更新或技术创新，为提高性能或档次，或为了使用新工艺、新技术，在原有基础上进行较大规模的技术更新或技术创新，较大幅度地提高水平和档次的更新改造。
4.3, NC transformation of the gifted missing
4.3、数控化改造的优缺
4.3.1 reduce the amount of investment, shorter delivery time
4.3.1 减少投资额、交货期短
Compared with the purchase of new machine, the general can save 60% to 80% of the costs and transforming low-cost. Especially for large, special machine tools particularly obvious. General t
