Control methods in the control plan
Control methods in the control plan. The control plan mainly refers to various characteristics that need to be controlled during the product production process, including key characteristics SC and special characteristics. CC, other common characteristics. So do you know what the control methods are in the control plan? Control method 1 in the control plan
About the method of formulating the control plan
Control plans should be formulated at the system, subsystem, component/material levels for the products provided;
The control plan requirements include the manufacturing process of raw materials and parts;
The control plan should list the control methods used for manufacturing process control;
The control plan includes samples, There are three important stages of trial production and formal production. The former control plan is the basis of the latter control plan;
There are control plans that consider the output of DFMEA and PFMEA in the trial production and production stages;
p>
Must be formulated using a multi-party demonstration method;
The control plan should specify sufficient frequency to conduct full-scale inspection and functional verification of all products;
The requirements of the MSA should be listed in the pilot production and production control plan;
A prescribed reaction plan should be initiated when the process becomes unstable or incapable of capability. When appropriate, the reaction plan should include product limitations. and 100 inspection (mainly product special characteristics);
When product changes, process changes, process instability, insufficient process capabilities, inspection method modifications, frequency modifications, the control plan should be reviewed and updated.
Control plan file formats include:
Control plan cover
Control plan directory
Control plan home page
Attachment to the control plan
Instructions for filling in the columns on the homepage of the control plan:
Sample, trial production, production
Black “■” in front of the corresponding stages.
Prototype - a description of the dimensional measurements, material and performance tests conducted during the manufacturing process of the prototype (generally the sample capacity is 100, the frequency is continuous, and the control method is full inspection);
Trial production - description of dimensional measurements, material and performance tests during the manufacturing process after trial production of prototypes and before formal production (the frequency is less than that of prototypes. Draw an X-R control chart for the special characteristics of the product and conduct initial testing. Process capability calculations, MSA requirements for all gages);
Production - a comprehensive documented description of product/process characteristics, process control, testing and measurement systems in formal series production. Control plan number
Fill in the control plan number for traceability, numbered according to technical documents.
Part number, latest change level
Fill in the number of the controlled part.
Fill in the latest engineering change level or release date of the drawing specification.
Part name/description
Fill in the name/description of the controlled part.
Supplier/Factory
Enter the name of the factory that manufactures the product.
Supplier code
Fill in the code specified by your customer, such as Duns and Bradstreet, etc.
Main Contact/Phone
Enter the name and phone number of the primary contact person responsible for the control plan.
Core Team
Signature of the person responsible for developing the control plan.
Supplier/Factory Approval/Date
Refers to the approval obtained from the manufacturing factory.
Date (Preparation)
Enter the date when the control plan was first prepared.
Date (revision)
Enter the date of the most recent revision of the control plan. The control plan cannot be modified. Changes to the control plan are in the form of page change/version change, and the original control plan must be saved.
Customer Engineering Approval/Date
Customer Engineering approves if necessary.
Customer Quality Approval/Date
If necessary, the Customer Quality Representative signs off on the control plan.
Other approvals/dates
Obtain other consent approvals, if necessary.
Part/Process Number
Enter the process number described on the process flow diagram.
Product characteristics
Fill in the product characteristics to be monitored, such as length, width, etc.
Product characteristics are the characteristics or performance of components, parts or assemblies described in drawings or other primary engineering information. The project team should identify product special characteristics and all special characteristics should be listed in the control plan, in addition to other product characteristics that are routinely controlled during normal operations.
Process characteristics
Fill in the process parameters to be monitored, such as pressure, temperature, current, etc. Process characteristics are process variables that have a causal relationship with the identified product characteristics. Process characteristics can only be measured as they occur. For a product characteristic there may be one or more process characteristics. In some processes, one process characteristic may affect several product characteristics.
Special characteristics classification
Mark according to the special characteristics symbols specified by the customer, or according to the compliance specified by the company. See list of product/process special characteristics.
This column can be left blank if it is not a special characteristic.
Product/Process Specifications/Tolerances
Fill in the product/process specifications/tolerances, which can be obtained from various engineering documents, such as product drawings, standards, and manufacturing/assembly requirements.
Evaluation/Measurement Technology
Labeled inspection, measurement, or test equipment used to monitor specified product or process characteristics. It includes measuring tools, inspection tools, and testing devices. The measurement system should be analyzed before use and improvements should be made accordingly.
Sample Size/Frequency
List the quantity of product at the time of sampling and the frequency with which the product will be tested or monitored.
Control method
Fill in the method used to monitor the specified product or process parameters, you can use statistical process control, inspection, error proofing (automatic/non-automatic) and sampling plan, etc.
Reaction plan
Specifies what actions should be taken if a product or process becomes unstable. These measures should usually be the responsibility of the person closest to the process (such as operators, adjusters or supervisors). The response plan can be: Control method 2 in the control plan
1. What is a control plan ?
The control plan mainly refers to the various characteristics that need to be controlled during the product production process, including key characteristics SC, special characteristics CC, and other ordinary characteristics.
Different companies also call it QC engineering drawings or manufacturing management engineering drawings.
2. What is the composition of the control plan?
It consists of the following columns: control object, which work step it belongs to, whether it is SC/CC?, equipment used, tooling, control method, detection frequency, remarks, etc.
Control plans are needed in both manual samples and mass production processes. Manual sample CP is relatively simple; mass production CP must be strict.
3. What are the requirements of the control plan?
A control plan refers to a written description of controlled products and processes in advance, also known as a quality control plan.
The focus of the company's document preparation is to indicate the importance of the product and process requirements. Each product should prepare a control plan, but in many cases, the "series" product control plan includes the control plan for the same process. Many products.
Customers generally require that the control plan be approved by relevant departments after design and development, before trial production, and after production parts are submitted (before mass production).
The control plan must be written in accordance with the DFMEA PFMEA, and the process flow and process cards must be written in accordance with the control plan.
4. How to write a control plan?
1. Format of the control plan table
1. If the customer does not specify in writing, the control plan shall adopt the format specified in the APQP manual. (Use it if specified or provided by the customer).
2. If the customer does not require a control plan, a single control plan can be applied to the same series of products produced by the same process and the same raw materials. Products (e.g. different specifications of the same product). When requested by the customer, a single control plan must be provided.
2. The corresponding columns of the control plan should be filled in and formulated according to the following requirements.
1. Classify the sample, trial production, and production selection control plans. According to the control plans for different process periods of the processed products, put a "√" symbol in the box before classification.
2. Control plan number: Fill in the control plan number. Specifically number according to the requirements of the "Document Control Procedure".
3. Part number/latest change level: fill in the drawing number of the controlled product. If there are any changes, the most recent modification time from the drawing specification can be filled in.
4. Part name/description: Fill in the name of the product to be controlled and the name of the control process.
5. Supplier/Factory: Fill in the name of the company that formulated the control plan.
6. Supplier code: Fill in the identification code given by the customer. If the customer does not give it, leave it blank.
7. Main contact person/phone number: Fill in the phone number of the main person in charge.
8. Project team: Fill in the names, departments and contact phone numbers of all personnel responsible for formulating the final version of the control plan. If it cannot be filled in, you can attach a page.
9. Preparation date: Enter the date when the control plan was first prepared.
10. Revision date: Enter the date of the most recent revision of the control plan.
11. Organization/Factory Approval/Date: The control plan shall be approved by the person responsible for quality assurance, and the name and approval date shall be filled in.
12. Customer Engineering Approval/Date: When required by the customer , filled in with approval from the customer engineering department.
13. Customer quality approval date: When required by the customer, it will be filled in with the approval of the customer quality department.
14. Other approval dates: If there are other requirements, they will be filled in with the approval of other personnel.
15. Part or process number: fill in the processing process name and number
16. Process name operation description: fill in the processing process description.
17. Production equipment, tooling, fixtures: production equipment used in each process and important tooling, fixtures or tools.
18. Characteristic numbering: The product characteristics and process characteristics in each process are numbered sequentially.
19. Product characteristics: product testing items specified in the product’s technical documents (including standards and inspection specifications).
20. Process characteristics: List all important process parameters that affect product characteristics.
21. Importance level: Fill in the special characteristic symbols specified by the customer and the special characteristic symbols specified by the company. See "Product Advance Planning and Control Procedures".
22. Product/Process Specification/Tolerance: For the control plan of a single product, fill in the specific technical requirements in this column.
For a series of control plans, it is allowed to fill in the absolute technical requirements, but the specific values ??do not need to be filled in.
23. Evaluation/Measurement Technology: Indicate the general measuring tools, special inspection tools, etc. used for measurement. The stability and accuracy should be analyzed, evaluated, and improved before use to continuously adapt to the quality requirements of this process.
24. Sample size/frequency: When sampling is required, list the corresponding sample size and frequency of control.
25. Control method: Describe how the operation should be controlled. Statistical techniques (such as control charts) and inspection (first inspection, self-inspection, process inspection) can be used to effectively analyze the process. Records, etc. to control operations. If a complex control program is used, fill in the control file number in this column. Specifies the corrective actions required to avoid the production of nonconforming product or loss of control of operations. Corrective measures are generally carried out by operators, inspection personnel, etc. Preventive measures should be documented. In all cases, suspect or substandard product should be clearly identified, segregated and disposed of.
26. Response plan
3. Implementation and management of the control plan
1. After the control plan is formulated and approved, Distribute to relevant departments in accordance with the distribution provisions of the "Document Control Procedures".
2. When the following situations occur in the control plan of a series of products, the control plan should be reviewed and updated, and the change method shall be implemented in accordance with the "Engineering Change Control Procedure". Control method 3 in the control plan
What are the five elements of the control plan?
1. Determine the boundaries of different types of land within the planning scope, and determine the types of buildings that are suitable for construction, unsuitable for construction, or conditionally allowed to be constructed in various types of land.
2. Determine the control indicators such as building height, building density, floor area ratio, and green space ratio in each plot; determine the supporting requirements for public facilities, the orientation of traffic entrances and exits, parking spaces, and the distance between building setback red lines, etc. .
3. Propose urban design guiding principles such as building volume, shape, color, etc. for each plot.
4. Analyze transportation needs to determine the location of the entrance and exit of the plot, parking spaces, land area and location of public transport stations, pedestrian traffic and other transportation facilities. Specify the red lines, sections, intersection forms and channelization measures, control point coordinates and elevations of roads at all levels.
5. According to the planned construction capacity, determine the location, pipe diameter and land boundaries of engineering facilities for municipal engineering pipelines, and conduct pipeline integration; determine the specific requirements for the development and utilization of underground space.
The purpose and function of the control plan:
The control plan is a documented description of the systems and processes required to control the product.
1. The purpose of the control plan:
1. Assist in manufacturing high-quality products according to customer requirements.
2. Minimize process and product errors.
3. Correctly allocate resources to important projects and help reduce costs.
4. It is an important stage in the quality planning process.
5. Provide process monitoring and control methods to control characteristics for formal production.
2. The role of control plan
1. The control plan method reduces waste products in the design, manufacturing and assembly processes and improves product quality.
2. Provide a complete evaluation of the product and process.
3. The control plan can identify process characteristics and help identify the sources of variation (input variables) of process characteristics that cause product characteristics to deteriorate.
4. Concentrate resources on processes and products related to important characteristics (to customers).
5. Communicate changes in product/process characteristics, control methods, and characteristic measurements to operators and customers.