SPC is the statistical process control. It is to control the various stages of the process to control the goals of improvement and quality. SPC emphasizes the focus of the entire process. It is also the abbreviation of the Special Police College of the Chinese People's Armed Police Force. The college is also called the Armed Special Police Academy. It is an institution that train special forces. The statistical process control uses statistics to monitor the status of the process, and determine that the production process is controlled in the state of control, and the mutant statistical process control (SPC) to reduce product quality is a process control tool that uses mathematical statistical methods. It analyzes and evaluates the production process, discovers the signs of systemic factors in time according to feedback information, and adopts measures to eliminate its impact, so that the process is maintained in the control state that is affected by random factors to achieve the purpose of controlling quality. It believes that when the process is only affected by random factors, the process is statistically controlled (referred to as controlling state); when the system is influenced in the process, the process is statistically out of control (referred to as out of control). Because the process fluctuations are statistically regular, when the process is controlled, the process characteristics generally obey the stable random distribution; and the process distribution will change when they are out of control. The SPC uses the statistical regularity of the process to analyze and control the process. Therefore, it emphasizes that the process is running in a state of controlling and capable, so that products and services can stably meet customer requirements. The process of implementing the SPC is generally divided into two steps: first analyze the process with the SPC tool, such as the control drawing of the analysis and analysis; The intervention to reduce the random fluctuations of the process to meet the needs of the process. The second step is to monitor the process with a control chart.
The control diagram is the most important tool in SPC. At present, a large number of traditional control charts based on the SHEWHART principle are used, but the control chart is not limited to this. In recent years, some advanced control tools have been gradually developed, such as the EWMA and CUSUM control charts monitored by small fluctuations, and the proportional control diagram and target control chart of small batch multi -variety production processes; Control Charts.
SPC originated from the 1920s, as a sign of the control chart of Dr. Shewhart in invention of the United States. Since its establishment, it has been promoted and applied in industries and services. Since the 1950s of the 1950s, the large amount of promotion and application of SPC in the Japanese industry has played a vital role in the rise of Japanese products; In the future, many large companies in the world have actively promoted the application of SPCs in their own internal, and also made corresponding requirements for suppliers. In ISO9000 and QS9000, the requirements for applying the SPC method in production control are also proposed.
The statistical process control (SPC) is a process control tool that uses mathematical statistical methods. It analyzes and evaluates the production process, discovers the signs of systemic factors in time according to feedback information, and adopts measures to eliminate its impact, so that the process is maintained in the control state that is affected by random factors to achieve the purpose of controlling quality. When the process is only affected by random factors, the process is in statistical control state (referred to as controlled by the control); when the system is influenced in the process, the process is in a state of statistical out of control (abbreviated as an out of control). Because the process fluctuations are statistically regular, when the process is controlled, the process characteristics generally obey the stable random distribution; and the process distribution will change when they are out of control. The SPC uses the statistical regularity of process fluctuations to analyze and control the process. Therefore, it emphasizes that the process is running in a state of controlling and capable, so that products and services can stably meet customer requirements.
SPC emphasizes the surveillance of the whole process and the participation of the whole system, and emphasizes the application of scientific methods (mainly statistical technology) to ensure the prevention of the whole process. SPC is not only suitable for quality control, but also can be applied to all management processes (such as product design, market analysis, etc.). It is the idea of all the members participating in the quality of management. The implementation of SPC can help enterprises truly perform "pre -" prevention and control in quality control. SPC can make a reliable assessment of the process; The boundary, determine whether the process is out of control and whether the process is capable; · Provide a early alarm system for the process, to monitor the process in a timely manner to prevent the occurrence of waste products; · reduce dependence on conventional inspection, regular observation and system measurement method replacement A lot of testing and verification work; with the above prevention and control, of course, our company can: reduce costs, reduce adverse rates, reduce rework and increase labor productivity · Provide core competitiveness, win extensive customers · More Good understanding and implementation of quality system
The implementation of SPCs is divided into two stages, one is the analysis phase, and the other is the monitoring phase. The control diagrams used at these two stages are called analysis control graphs and control diagrams. The main purpose of the analysis phase is: first, the process is in the statistical stability; second, the process ability is sufficient. The first work of the analysis stage is production preparation, that is, prepare the raw materials, labor, equipment, and measurement system required for the production process in accordance with the standard requirements. It can be carried out after the production preparation is completed. Note that it is necessary to ensure that the production is performed without abnormal factors that affect the various elements of production. The process ability analysis is performed to test whether the production process is in statistical stability and whether the process ability is sufficient. If no one can be satisfied, you must find the reason for improvement, and re -prepare production and analysis. Until the two purposes of the analysis phase, the analysis phase can be announced and enter the SPC monitoring stage. The main task in the monitoring phase is to monitor the control diagram with control. At this time, the control boundary of the control diagram has been determined according to the results of the analysis phase. The data of the production process is drawn to the control in time, and the control diagram is closely observed. Out of control must find the cause and eliminate its influence as soon as possible. Monitoring can fully reflect the role of SPC prevention and control. In the actual application of the factory, for each control project, it must go through the above two stages, and it will repeat the process from analysis to monitoring when necessary.
. After nearly 70 years of practice, the SPC theory has developed very well, and its combination with computer technology is increasingly close. Deep. In summary, the development of SPC presents the following characteristics: (1). The analysis function is powerful, and the auxiliary decision -making effect is obviously developed on the basis of the practice of many enterprises. In -depth research and analysis of data from different perspectives, in this process, SPC's auxiliary decision -making functions are increasingly strengthened; (2). It reflects the popularization of comprehensive quality management ideas. With the popularization of comprehensive quality management ideas, SPCs are in corporate products in corporate products. The application of quality management has gradually expanded from the quality control of the manufacturing process to the quality control of various links such as product design, auxiliary production process, after -sales service and product use, and emphasizes the prevention and control of the entire process; (3) and computer network technology The quality management requirements of modern enterprises are closely integrated into the scope of inspection and monitoring, and the management functions of different internal departments within the enterprise present the increasing details of the division of labor and the increasingly close cooperation. The source of the source is shared to the greatest extent. To adapt to this need, the combination of SPC and computer technology, especially network technology, is getting closer and closer.
. The basic knowledge of SPC 1. About control, process, statistics 2. Features and its classification 3. Statistical foundation . The basic principles of SPC 4.过程的理解与过程控制5.波动及波动的原因6.局部措施和系统措施rn三、统计过程的控制思想rn 1.正态分布简介2.统计控制状态及Two errors 3. Process control and process capacity 4. Process improvement cycle 4. Control graph type 1. Control diagram application description 2. Definition and purpose of control diagram 3. Control chart solution problem ideas 4 . Control chart benefits 5. Control graph Classification 6. Selection of the control diagram 5. Calculate the steps and calculation methods of the calculation control diagram 1. The average value and the difference diagram of the difference 2. The average and the standard deviation Figure 3 . Middle number and polar difference diagram 4. Single value and mobile polar difference diagram 6. Critical control chart and process ability index 1. Process ability interpretation prerequisite 2. Calculation of process capabilities 3. Process 3. Process 3. Process Capability Index 4. Process Performance Index Seven. Process League Quote
SPC is the quality control technology trusted and adopted by manufacturing globally. For more than half a century, the widespread application of SPC has promoted the development and prosperity of the manufacturing industry. The new century is the century of quality. The quality of quality shaping is the key to competition. In some industries, the application of SPC has become the basic demand for the survival of the enterprise. Traditional concepts can be used as a means of quality assurance. It can only be judged afterwards. The application of SPC can seize the opportunity to prevent the emergence of unqualified products, reduce costs, and improve the efficiency of enterprise operation. SPC emphasizes the surveillance of the whole process, the participation of the whole system, and the application of scientific methods (mainly statistical technology) to ensure the prevention of the entire process. SPC is not only suitable for quality control, but also can be applied to all management processes (such as product design, market analysis, etc.). It is the idea of all the staff participating in management quality that the implementation of SPC can help enterprises can truly perform "pre -advance" prevention and control of SPC in quality control: · Make a reliable assessment of the process; Control the boundaries, determine whether the process is out of control and whether the process is capable; · Provide a early alarm system for the process, to monitor the process in a timely manner to prevent the occurrence of waste products; · reduce the dependence of conventional inspection, regular observation, and system measurement method of system measurement. A large number of testing and verification work has been replaced; with the above prevention and control, of course, our company can: reduce costs; reduce adverse rates, reduce rework and waste; · increase labor productivity; · better understand and implement Quality system.
SPC is the statistical process control. It is to control the various stages of the process to control the goals of improvement and quality. SPC emphasizes the focus of the entire process. It is also the abbreviation of the Special Police College of the Chinese People's Armed Police Force. The college is also called the Armed Special Police Academy. It is an institution that train special forces. The statistical process control uses statistics to monitor the status of the process, and determine that the production process is controlled in the state of control, and the mutant statistical process control (SPC) to reduce product quality is a process control tool that uses mathematical statistical methods. It analyzes and evaluates the production process, discovers the signs of systemic factors in time according to feedback information, and adopts measures to eliminate its impact, so that the process is maintained in the control state that is affected by random factors to achieve the purpose of controlling quality. It believes that when the process is only affected by random factors, the process is statistically controlled (referred to as controlling state); when the system is influenced in the process, the process is statistically out of control (referred to as out of control). Because the process fluctuations are statistically regular, when the process is controlled, the process characteristics generally obey the stable random distribution; and the process distribution will change when they are out of control. The SPC uses the statistical regularity of the process to analyze and control the process. Therefore, it emphasizes that the process is running in a state of controlling and capable, so that products and services can stably meet customer requirements. The process of implementing the SPC is generally divided into two steps: first analyze the process with the SPC tool, such as the control drawing of the analysis and analysis; The intervention to reduce the random fluctuations of the process to meet the needs of the process. The second step is to monitor the process with a control chart.
The control diagram is the most important tool in SPC. At present, a large number of traditional control charts based on the SHEWHART principle are used, but the control chart is not limited to this. In recent years, some advanced control tools have been gradually developed, such as the EWMA and CUSUM control charts monitored by small fluctuations, and the proportional control diagram and target control chart of small batch multi -variety production processes; Control Charts.
SPC originated from the 1920s, as a sign of the control chart of Dr. Shewhart in invention of the United States. Since its establishment, it has been promoted and applied in industries and services. Since the 1950s of the 1950s, the large amount of promotion and application of SPC in the Japanese industry has played a vital role in the rise of Japanese products; In the future, many large companies in the world have actively promoted the application of SPCs in their own internal, and also made corresponding requirements for suppliers. In ISO9000 and QS9000, the requirements for applying the SPC method in production control are also proposed.
The statistical process control (SPC) is a process control tool that uses mathematical statistical methods. It analyzes and evaluates the production process, discovers the signs of systemic factors in time according to feedback information, and adopts measures to eliminate its impact, so that the process is maintained in the control state that is affected by random factors to achieve the purpose of controlling quality. When the process is only affected by random factors, the process is in statistical control state (referred to as controlled by the control); when the system is influenced in the process, the process is in a state of statistical out of control (abbreviated as an out of control). Because the process fluctuations are statistically regular, when the process is controlled, the process characteristics generally obey the stable random distribution; and the process distribution will change when they are out of control. The SPC uses the statistical regularity of process fluctuations to analyze and control the process. Therefore, it emphasizes that the process is running in a state of controlling and capable, so that products and services can stably meet customer requirements.
SPC emphasizes the surveillance of the whole process and the participation of the whole system, and emphasizes the application of scientific methods (mainly statistical technology) to ensure the prevention of the whole process. SPC is not only suitable for quality control, but also can be applied to all management processes (such as product design, market analysis, etc.). It is the idea of all the members participating in the quality of management. The implementation of SPC can help enterprises truly perform "pre -" prevention and control in quality control. SPC can make a reliable assessment of the process; The boundary, determine whether the process is out of control and whether the process is capable; · Provide a early alarm system for the process, to monitor the process in a timely manner to prevent the occurrence of waste products; · reduce dependence on conventional inspection, regular observation and system measurement method replacement A lot of testing and verification work; with the above prevention and control, of course, our company can: reduce costs, reduce adverse rates, reduce rework and increase labor productivity · Provide core competitiveness, win extensive customers · More Good understanding and implementation of quality system
The implementation of SPCs is divided into two stages, one is the analysis phase, and the other is the monitoring phase. The control diagrams used at these two stages are called analysis control graphs and control diagrams. The main purpose of the analysis phase is: first, the process is in the statistical stability; second, the process ability is sufficient. The first work of the analysis stage is production preparation, that is, prepare the raw materials, labor, equipment, and measurement system required for the production process in accordance with the standard requirements. It can be carried out after the production preparation is completed. Note that it is necessary to ensure that the production is performed without abnormal factors that affect the various elements of production. The process ability analysis is performed to test whether the production process is in statistical stability and whether the process ability is sufficient. If no one can be satisfied, you must find the reason for improvement, and re -prepare production and analysis. Until the two purposes of the analysis phase, the analysis phase can be announced and enter the SPC monitoring stage. The main task in the monitoring phase is to monitor the control diagram with control. At this time, the control boundary of the control diagram has been determined according to the results of the analysis phase. The data of the production process is drawn to the control in time, and the control diagram is closely observed. Out of control must find the cause and eliminate its influence as soon as possible. Monitoring can fully reflect the role of SPC prevention and control. In the actual application of the factory, for each control project, it must go through the above two stages, and it will repeat the process from analysis to monitoring when necessary.
. After nearly 70 years of practice, the SPC theory has developed very well, and its combination with computer technology is increasingly close. Deep. In summary, the development of SPC presents the following characteristics: (1). The analysis function is powerful, and the auxiliary decision -making effect is obviously developed on the basis of the practice of many enterprises. In -depth research and analysis of data from different perspectives, in this process, SPC's auxiliary decision -making functions are increasingly strengthened; (2). It reflects the popularization of comprehensive quality management ideas. With the popularization of comprehensive quality management ideas, SPCs are in corporate products in corporate products. The application of quality management has gradually expanded from the quality control of the manufacturing process to the quality control of various links such as product design, auxiliary production process, after -sales service and product use, and emphasizes the prevention and control of the entire process; (3) and computer network technology The quality management requirements of modern enterprises are closely integrated into the scope of inspection and monitoring, and the management functions of different internal departments within the enterprise present the increasing details of the division of labor and the increasingly close cooperation. The source of the source is shared to the greatest extent. To adapt to this need, the combination of SPC and computer technology, especially network technology, is getting closer and closer.
. The basic knowledge of SPC
1. About control, process, statistics 2. Features and its classification 3. Statistical foundation
. The basic principles of SPC
4.过程的理解与过程控制5.波动及波动的原因6.局部措施和系统措施rn三、统计过程的控制思想rn 1.正态分布简介2.统计控制状态及Two errors 3. Process control and process capacity 4. Process improvement cycle
4. Control graph type
1. Control diagram application description 2. Definition and purpose of control diagram 3. Control chart solution problem ideas 4 . Control chart benefits 5. Control graph Classification 6. Selection of the control diagram
5. Calculate the steps and calculation methods of the calculation control diagram
1. The average value and the difference diagram of the difference 2. The average and the standard deviation Figure 3 . Middle number and polar difference diagram 4. Single value and mobile polar difference diagram
6. Critical control chart and process ability index
1. Process ability interpretation prerequisite 2. Calculation of process capabilities 3. Process 3. Process 3. Process Capability Index 4. Process Performance Index
Seven. Process League Quote
SPC is the quality control technology trusted and adopted by manufacturing globally. For more than half a century, the widespread application of SPC has promoted the development and prosperity of the manufacturing industry. The new century is the century of quality. The quality of quality shaping is the key to competition. In some industries, the application of SPC has become the basic demand for the survival of the enterprise. Traditional concepts can be used as a means of quality assurance. It can only be judged afterwards. The application of SPC can seize the opportunity to prevent the emergence of unqualified products, reduce costs, and improve the efficiency of enterprise operation. SPC emphasizes the surveillance of the whole process, the participation of the whole system, and the application of scientific methods (mainly statistical technology) to ensure the prevention of the entire process. SPC is not only suitable for quality control, but also can be applied to all management processes (such as product design, market analysis, etc.). It is the idea of all the staff participating in management quality that the implementation of SPC can help enterprises can truly perform "pre -advance" prevention and control of SPC in quality control: · Make a reliable assessment of the process; Control the boundaries, determine whether the process is out of control and whether the process is capable; · Provide a early alarm system for the process, to monitor the process in a timely manner to prevent the occurrence of waste products; · reduce the dependence of conventional inspection, regular observation, and system measurement method of system measurement. A large number of testing and verification work has been replaced; with the above prevention and control, of course, our company can: reduce costs; reduce adverse rates, reduce rework and waste; · increase labor productivity; · better understand and implement Quality system.