Monday, August 2, 2010

OEE overall equipment efficiency

OEE overall equipment efficiency is a simple and practical production management tools in the manufacturing sector in Europe and the United States has been widely used index of overall equipment efficiency has become an important measure of production efficiency standards, is TPM (Total Productive Maintenance) is an important practices.涓轰簡鎺ㄥ姩鎴戝浗宸ヤ笟淇℃伅鍖栫殑杩涚▼锛屽湪鎴戝浗鎺ㄥ箍OEE鐨勭鐞嗙悊蹇碉紝浠庤?浣挎洿澶氫紒涓氬彈鐩婏紝鐗规挵鍐欐鏂囥? This article discusses the concept of OEE and its role.

聽聽聽 1銆佸紩 鍏?br />
With the increasingly fierce market competition, the manufacturer is to have sustainable access to high economic efficiency, maximize and improve the mining

聽聽聽 鐢熶骇杞﹂棿鐨勭敓浜ф晥鐜囨樉寰楁瀬鍏堕噸瑕侊紝鍦ㄦ煇浜涙柟闈紝瀹冪敋鑷虫垚涓轰紒涓氭槸鍚﹀彲浠ヨ耽鍒╃殑鍐冲畾鎬у洜绱犮? However, the manufacturing industry, the seemingly well-functioning production plant does not actually work to the best possible equipment and the value of the operator there is a big improvement, it gives the company tremendous loss. To solve this problem, the international manufacturing industry is concerned the efficiency of the global device (OEE) concept.

2, OEE definition

聽聽聽 涓?埇锛屾瘡涓?釜鐢熶骇璁惧閮芥湁鑷繁鐨勬渶澶х悊璁轰骇鑳斤紝瑕佸疄鐜拌繖涓?骇鑳藉繀椤讳繚璇佹病鏈変换浣曞共鎵板拰璐ㄩ噺鎹熻?銆?Of course, the actual production is not possible to meet this requirement, due to many factors, workshop equipment failure is substantial: for example, through equipment failure addition, alignment, and complete replacement of equipment in addition, the performance is very low when the device may affect productivity, resulting in defects, rework, etc..

聽聽聽 OEE鏄竴涓嫭绔嬬殑娴嬮噺宸ュ叿锛屽畠鐢ㄦ潵琛ㄧ幇瀹為檯鐨勭敓浜ц兘鍔涚浉瀵逛簬鐞嗚浜ц兘鐨勬瘮鐜囥? International on the OEE is defined as: OEE is Overall Equipment Effectiveness (overall equipment efficiency) of the abbreviation, it is by the availability, performance and quality index of three key elements, namely:
OEE = Availability X Performance X Quality Index.

Of which:
聽聽聽 鍙敤鐜?鎿嶄綔鏃堕棿 / 璁″垝宸ヤ綔鏃堕棿

It is used to take into account the losses caused by downtime, including downtime caused by planned production occurred in any event, such as equipment failures, material shortages and changes in production methods, etc..

Performance = Ideal Cycle Time / (operating time / total) = (production / operating time) / production rate

Performance considerations of loss of production speed. Including any lead to the production can not be run at maximum speed factors, such as wear and tear of equipment, material failure and operator error, etc..

聽聽聽 璐ㄩ噺鎸囨暟=鑹搧/鎬讳骇閲?br />
Mass index into account the loss of quality, it does not meet the quality requirements to reflect the products (including rework of products).

Use one of the most important objective of OEE is to reduce the existence of six general manufacturing losses: stop loss, Dress debugging loss, loss of suspended aircraft, slowing the loss, the loss and start the process of defective during normal operation of production losses arising from defective.涓嬮潰琛ㄦ牸鏄叚澶ф崯澶辩殑璇存槑鍙婂叾涓嶰EE鐨勫叧绯伙細

3, OEE calculation example

We give an example to illustrate the calculation of OEE:
Equipment located in a working day time 8h, classes planned downtime before 15min, downtime 30min, equipment adjustment 25min, product cycle theory of processing 0.6 min / piece, one day total of 450 processed products, there are 20 pieces of junk, find the station equipment OEE.

According to the above known:
Program running time = 8x60-15 = 465 (min)
Actual running time = 465-30-25 = 410 (min)
聽聽聽 鏈夋晥鐜?410/465=0.881(88.1%)
聽聽聽 鐢熶骇鎬婚噺=410(浠?
The actual running time of the ideal speed x = 1/0.6 x 410 = 683
Performance = 450/683 = 0.658 (65.8%)
聽聽聽 璐ㄩ噺鎸囨暟=锛?50鈥?0锛?450=0.955(95.5%)
OEE = efficiency x Performance x Quality Index = 55.4%

OEE system according to the data provided, you can easily know what problems the factory, for example, if you are efficient at a certain time is very low, indicating the six losses and OEE in the rate of loss can be related to too much trouble , then, clearly, you should focus on these areas to improve it!鍚屾牱锛屽鏋滆川閲忔寚鏁版垨鑰呰〃鐜版?瀵艰嚧浣犵殑OEE姘村钩闄嶄綆锛岄偅涔堜綘灏卞簲璇ユ妸鐩厜鏀惧湪鍜屽畠浠湁鍏崇殑闂鐐逛笂銆傚湪琛ㄤ竴涓紝鎴戜滑鍙垪涓句簡涓?簺浜嬩欢鍘熷洜锛屽湪瀹為檯搴旂敤涓畠鍙互鍖呮嫭鍜岀敓浜ф湁鍏崇殑浠讳綍鍘熷洜銆?br />
聽聽聽 涓栫晫鑼冨洿鐨勭爺绌惰〃鏄庯紝鐩墠鍒堕?涓氱殑骞冲潎OEE涓?0%.鍏ㄧ悆宸ヤ笟鐨凮EE骞冲潎娓存湜鍊煎簲璇ヤ负85%锛堜笘鐣岀骇OEE鎸囨暟锛夋垨鑰呮洿楂樸? Clearly, there are many current OEE index can increase the scope, especially in our country.

4, OEE Role

Practice shows that OEE is an excellent reference tool OEE model through the various sub-item analysis, it clearly tells you exactly how efficient equipment, which links in the production of the number of losses, and you can make those improvements. Long-term use of OEE tool, companies can easily find the impact of productivity bottlenecks and to improve and track. To achieve the purpose of improving production efficiency, while enabling the company to avoid unnecessary cost.

聽聽聽 5銆丱EE鏁版嵁閲囬泦鏂规硶

OEE's calculation is simple, but in practical applications, as with the frequency, staff, equipment, products and other production elements together, they become very complex, using artificial data collection appears to trouble trouble OEE calculation, in order to more effectively The use of this tool OEE, OEE data collection of information increasingly become a topic of concern, OEE IMPACT is the world's best OEE system that has automated data acquisition module, you can easily obtain information about the production of equipment for the OEE provide the most valuable data, the system can also generate real-time production information reports, including failure downtime, OEE and other information and the products. Through these valuable data, the management company will no doubt become easier and simple. The system has many well-known companies in the world and is widely used, such as Peugeot, Ya-Lan Dai Shi Eaton auto parts and other cosmetics.

聽聽聽 [1] Robert C. Hansen. OVERALL EQUIPMENT EFFECTIVRNESS .New York, New York: Industrial Press,2002.


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