OEE
目录Contents
1. OEE管理规定的目的与适用范围1.1 目的
1.2 适用范围1. Objective and scope of OEE Index Regulation 1.1 Objective
1.2 Scope of application
2. OEE介绍
2.1 OEE定义及组成
2.2 OEE中的8种损失
2.3 OEE基础数据统计方法2.
3.1我们如何开始
2.3.2 可用性
2.3.3 表现性
2.3.4 质量
2.4 OEE计算方法
2.4.1 OEE计算的中间数据2.4.2 计算方法2. OEE introduction
2.1 OEE definition and composition
2.2 8 Losses in OEE
2.3 Statistics and Calculation of OEE basic data 2.
3.1 Where Do We Start?
2.3.2 Availability
2.3.3 Performance
2.3.4 Quality
2.4 OEE calculation
2.4.1 Immediate data of OEE calculation
2.4.2 Formula
3. OEE的指导原则3.1 实施OEE的注意事项3.2 多品种小批量的计算3.3 质量指标的计算3. Guiding principle of OEE implementation
3.1 Considerations of OEE implementation
3.2 OEE Calculation for multi-type, small-batch production 3.3 Quality index calculation
4. 相关文件 4 Related documents
1 OEE管理规定的目的与适用范围
1.1目的
为指导OEE在全公司范围的推广。
为OEE指标系统的建立提供理论基础以及实施方法的指导。
1.2适用范围
适用的目标为各种生产设备、测试设备以及公共设施。
适用范围涵盖拥有生产设备、测试设备的各个车间及部门，以及各类公共设施的管理部门。1 Objective and scope of OEE Index Regulation
1.1 Objective
This regulation is used to describe and guide the implementation of OEE in SEDL wide.
This regulation provides a theoretical basis and practical guideline for the establishment of OEE index system.
1.2 Scope of application
This regulation shall be applicable to manufacturing equipments, test equipments and public facilities.
This regulation refers to workshops with manufacturing equipments and test equipments, management departments responsible for public facilities in the factory.
2. OEE介绍
2.1 OEE定义及组成
OEE（总体设备效能）：表明在需要设备运行时其表现的好坏程度。
OEE是监控和改善制造流程效率的最优方法。OEE被用来衡量TPM（全员生产维护）状态的标尺。
OEE指标由三部分组成：可用性、表现性、质量。
他们的相互关系如下：
?OEE = 可用性 x 表现性 x 质量
可用性
用来展示设备在总可用时间内的可用性。
表现性
用来衡量设备的速度损失以及由于阻塞和缺料产生的空闲或停顿。
质量
用来展示设备产出的一次合格良品率。
2.2 OEE 中的8种损失
计划停机
由于计划或合约内容而导致的设备停机。2. OEE introduction
2.1 OEE definition and composition
OEE (Overall Equipment Effectiveness): A measure of the equipment's effectivene ss in producing parts.
OEE is a "best practice" way to monitor and improve the effectiveness of your manufacturing processes.
OEE is used as a key metric in TPM (Total Productive Maintenance).
It is determined by three factors: Availability, Performance, and Quality.
This is how the four are related to each other:
?OEE = Availability X Performance X Quality
Availability
The efficiency of the machine with respect to the time the machine was available.
Performance
A measurement of both speed losses and losses associated with idling or minor interruptions resulting from blocked or starved conditions.
Quality
The efficiency of the machine with respect to the number of defects produced.
2.2 8 Losse s in OEE
Planned Downtime
The time the machine is down due to planned schedules or contractual breaks.
Breakdowns
故障损失
由于故障停机的时间总和，包括设备被修理及测试直到可以运行的时间。
转换时间
由于设备进行另一种型号的加工而进行的准备和调整时间的总和。
调整时间
由于设备调整导致的停机时间，例如材料或加工条件的改变。
启动损失
在每班开始和结束时的所发生的没有产出的时间，包括准备，升温及降温。
小停机
在设备运行中发生的需要设备操作者处理的小中断或异常，由此而产生的时间损失。
速度降低
由于设备运行速度小于初始设计速度而产生的时间损失。
缺陷返工
由于产出品未达到质量要求，而产生的返工及报废。
? OEE8种损失对照表
The total time the machine is stopped because of malfunction. Includes the time that the machine is being repaired and tested, until it is ready to operate. Changeovers
The total time that the machine is stopped to prepare to run a different part or to alter the machine to meet end product specifications. Setups
The total time that the machine is stopped due to equipment adjustments, such as manufacturing condition change and material change. Startup time
The total time the machine is stopped, during the first and last hour of the shift, include preparation, warming up, cooling and so on. Small Stops
The total time the machine is stopped due to interruptions in the process flow requiring operator or job setter intervention. Reduced Speed
The lost production time resulting from the operation of the equipment at less than ideal speed. Rejects & Reworks
Production parts that require rework or can not achieve quality standards should be considered rejects. ? Table for 8 Losse s in OEE
2.3 数据统计及计算方法
2.3.1 我们如何开始：
OEE分析由总可用时间开始，总可用时间是指每班次从开始到结束的总时间。
从总可用时间，我们减去计划停机时间，也就是计划或合约的机器停机时间，包括休息、午餐、计划的维护和/或无定单。剩余的可用时间是净可用时间。
2.3.2 可用性
可用性需要考虑停机损失，包括故障损失、转换时间、调整时间、启动损失。例如设备故障、材料短缺、生产切换以及其他异常停机。
在净可用时间的基础上减去以上四种损失的合计时间就是实际运行时间。
2.3.3 表现性
表现性需要考虑速度降低、小停机。例如设备磨损老化、不合规格的材料、设备小停顿以及工人效率低。剩余的有效时间就是产出时间。
2.3.4 质量
质量表现需要考虑缺陷返工，缺陷返工是指未达到质量要求的产出品，以及需要重新加工或修理的产出品。最终剩余的时间叫有价值时间。2.3 Statistical data and Calculation
2.3.1 Where Do We Start?
OEE analysis starts with Total available time,which is the total time from start of shift to end of shift.
From Total available time, we subtract a category of time called Planned Downtime, which means the machine is down due to planned schedule or contractual breaks. Examples include breaks, lunch, scheduled maintenance, or periods where there is nothing to produce. The remaining available time is Net available time.
2.3.2 Availability
Availability takes into account Downtime loss, include Breakdown, Changeover, Setups, Start up time. Examples include equipment failures, material shortages, changeover time and abnormal break down. The remaining available time is called Operating Time.
2.3.3 Performance
Performance takes into account Reduced Speed and Small Stops. Examples include machine wear, substandard materials, small stops, and operator inefficiency. The remaining available time is called Net Operating Time.
2.3.4 Quality
Quality takes into account Production Rejects & Reworks, which accounts for produced pieces that do not meet quality standards, including pieces that require rework. The remaining time is called Valuable Time.
2.4 OEE计算方法
2.4.1 OEE计算的中间数据
?净可用时间 = 总可用时间 - 计划停机时间
?实际运行时间 = 净可用时间 - 停机损失时间
?理想运行速率: 是指设备的设计速度，单位是分钟/件。它是持续改善的目标，也是
最佳的加工周期。
?总产出：在规定时间内目标设备的总产出数量。
2.4.2计算方法
OEE指标由3部分组成；可用性、表现性、以及质量表现，3个分指标以相乘的形式得到OEE指标。2.4 OEE calculation
2.4.1 Immediate data of OEE calculation
?Net available time = Total available time - Planned downtime
?Operating time = Net available time - Downtime losse s
?Ideal Cycle Time: It means the design cycle time of the machine. The unit is minutes per part. It is the
best cycle time ever achieved and sustained on the
machine.
?Total Output: Total of all produced pieces from target machine within the given time.
2.4.2 Formula
OEE index is composing with 3 factors, Availability, Performance and Quality. OEE is multiplied by 3 factors.
?可用性= 实际运行时间/净可用时间
?表现性= 总产出x 理想运行速率/实际运行时间
?质量=（总产出-缺陷返工）/总产出
?OEE = 可用性x表现性x质量表现?Availability = Operating time / Net available time ?Performance = Output X Ideal Cycle Time / Operating time
?Quality = (Output - Rejects & Reworks) / Total Output
?OEE= Availability X Performance X Quality
3. 实施OEE的指导原则
3.1实施OEE的注意事项
?与生产相关的设备都需要进行OEE指标的考量。
?OEE的测量周期以班为单位，更新周期跟据数据维护情况而定。
?非生产设备，例如公共设施，进行OEE考量时，可以跟据实际情况不选取质量以及
利用性。
3.2 多品种小批量的计算
设备产出的产品类型多,每种产品类型，相应的理论加工时间都不相同；
?表现性 = （A型号的产出量 X A型号理想运行速率 + B型号的产出量 X B型号理想
运行速率+ ......）/ 实际运行时间
?质量= 总产出 -（A型号的缺陷返工 + B 型号的缺陷返工 + ......）/ 总产出；
?可用性不随产品规格变化，无须分产品规格计算。
3.3 质量指标的计算
质量指标考虑的是产出品的一次合格率;
?经过返工的不合格品不能再次计入质量指标。
?本工位接受其它工位的返工品，进行返工返验操作的时间算作停机损失，不应该计
入实际运行时间。
?统计人员应判断产生质量问题的设备，将缺陷返工计入此设备。3. Guiding principle of OEE implement
3.1 Considerations of OEE implement
?Any equipment related to manufacturing needs OEE index evaluation.
?We define a shift as an OEE calculation unit, the update frequency is depend on actual situation.
?Non-manufacturing equipment, such as public equipments, could not consider Performance and
Quality.
3.2 Calculation of multi-type, small batch
In case of multi-type, small batch, there are many types of output from one equipment, and each type has their own Ideal Cycle Time;
?Performance = (Type A Output X Type A Ideal Cycle Time + Type B Output X Type B Ideal Cycle
Time +...) / Operating time
?Quality = Total Output - (Type A Rejects & Reworks + Type B Rejects & Reworks + ...) / Total Output ?Availability should not be affected by multi-type.
3.3 Quality index calculation
Quality takes into account first past yield of output.
?Quality could not consider reworked product twice, ?The duration of reworks is considered as downtime loss, when this equipment accepts rejects. This
kind of downtime loss is not including in Operating
time.
?Person in charge of statistical data need to define related equipment which cause nonconformity, and
count Rejects & Reworks into Quality of this
equipment.
4. 相关的文件和表格 4 Related document