Design and Implementation of CE – Regulatory Flat-Bed CNC Machines

• Main Author: 張錦鋒
• Other Authors: 陳財榮
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/33882513647468190730

碩士 === 國立彰化師範大學 === 電機工程學系 === 95 === The machinery industry was limited in facility of maintenance and repair before Taiwan restore. After Taiwan government set the developing stratagem and ranked the machinery industry as the key industry, it went through sprouting and settle down step by step. The Machinery industry is the Mother of Industry, development of machine-tools business is well standing for it especially. The CNC machines take the position of conventional machine business as the latter lost its competition when the NT dollar appreciated and the manufacturing cost raised severely. The CNC machinery production started from 1986, the two/three-axis machining center is the key business which widely applied in mobile, air craft, machine facility, electrical and electricity industrie, The main markets are in South-East Asia, America (including South & Middle America) and Africa. In recent 5 years, China even occupies higher than 40% of export-sale volume. (Except 2005 & the 1st quarter of 2006 decreased to 36%) Even though the gross volume keeps growing, the quality is never outstanding to break the door of high end market, like the European market. The European Communities (EC) occupied about 40% of the whole world machinery business, but Taiwan only exports 15%~20% CNC machines to EC. The main obstacle is the lack of knowledge for EC safety regulation. As a matter of fact, makers do not understand the mechanical/ electrical engineering and the related safety requirement, and most of the products do not meet CE regulation. In order to ensure their own safety, the European big importers/distributors are afraid of purchasing and selling the products from Taiwan. Most of Taiwan machinery manufacturers appoint the 3rd party to approve, but on the certificate marks the 3rd part to get rid of the legislation responsibility. To save the expense, usually the 3rd party only approves one model, but lists all the models on the certificate. Although obtaining the certificate, the manufacturers still do not know much about it and could only sell to inferiority or small markets. Hence, it is very important to strengthen the CE regulation knowledge and use the mechanical/electrical technique (especial to those high risk factors, such as electrical interference, loading, design, panel, circuit design) to assist the machine tool builders producing the machines which can conform to CE-regulation, based on CE-Regulation, we have produced Flat-Bed CNC Machines. Full load is 50.975A, heat exchanger reduced 20 degree C, and EMI value at 70dBuV and geometic tolerance meet ISO60204. It is also helpful for the manufacturers to upgrade in the production of multiple axis machines, high speed built-in motor, linear way motor, and high torque motor. To utilize the advanced technique and open the high-end markets, gaining higher market share.Ensuring the long term development and life expectancy, is the main purpose of this thesis.