SGS / TUV factory cnc machining parts molding manufacturers usa
Quality control plan can be said to be one of the essential skills of quality engineer QE. The main goal of quality control plan is to ensure the quality of products or projects and meet customer requirements and standards. One of the main jobs of the quality engineer QE is to formulate and implement this plan; therefore, if you want to become a quality engineer, quality control planning is one of your essential skills;
Today, the editor will take you to learn more about what a quality control plan is and how to make a quality control plan; SGS / TUV factory cnc machining parts molding manufacturers usa
- What is the quality control plan?
The quality control plan is a diagram that clarifies the control points (control items, inspection items) and management methods for each project of a product from raw material input to finished product shipment. It is also called a QC control chart or quality inspection plan. - How to formulate a quality control plan? Commonly used shape symbols and functions?
- Select the product, its engineering, and symbols
(1) All engineering projects or key projects are approved or recognized by senior managers. Only in this way can these engineering projects receive the support and attention of senior leaders throughout the organization.
(2) The selected projects are subdivided into unit projects based on operator category or construction method category. That is to say, when selecting a project, the entire project should be subdivided into smaller unit projects based on the different characteristics of the operators (staff), or different working methods, or even different skills, in order to better manage and Allocate tasks and also clarify the scope of responsibility of each unit’s project, so that the engineering personnel understand their responsibilities, which can play a certain role in quality control.
(3) Cooperate with the manager’s scope of responsibilities and make clear project distinctions. When selecting engineering projects, it is necessary to ensure that the scope of responsibilities of the managers of each engineering project is clear so that the management and supervision responsibilities of different engineering projects can be clearly distinguished. SGS / TUV factory cnc machining parts molding manufacturers usa
(4) Symbol meaning (if symbol representation is required) Please refer to the diagram below - Review control points (control items, inspection items)
(1) Select control items based on important items of the manufacturing process.
Process: This refers to the production or manufacturing process in which raw materials or components are transformed into final products.
Important items: This refers to items or links of critical importance in the entire manufacturing process.
Selected control items: This means selecting some from all important items for control and monitoring to ensure the stability and consistency of the process.
(2) Select the inspection items according to the process inspection items (for those who are prone to mistakes, try to prevent mistakes as much as possible).
Process inspection items: This refers to items or links that are regularly inspected and monitored during the process to ensure the normal operation of the process and detect potential problems.
Make mistakes as easy as possible: This is a principle that means taking steps to prevent problems or mistakes due to human error.
- Review management methods (including sampling)
(1) Management chart—a management chart that detects abnormalities and analyzes the data used for countermeasures and determines management responsibilities. SGS / TUV factory cnc machining parts molding manufacturers usa
(2) Sampling method—check cycle, time, sampling method and number of samples.
(3)Measurement method—use measuring instruments or sensory inspection.
(4) Disposal measures—abnormality determination criteria, abnormality handling and responsibilities.
- Add and revise relevant standards review
Review of relevant standards for additions and revisions refers to the review, update or modification of existing standard documents to ensure that they are consistent with current technology, regulations, industry practices and needs. This process usually includes the following steps:
① Develop a review plan: First, develop a review plan to clarify which standards need to be reviewed, as well as the frequency and scope of the review. This plan can be determined based on the nature and purpose of the standard.
②Convene a review committee: Organize a review committee that includes experts in the professional field, stakeholders and users of the standard.
③Collect information: Collect information about standards, including technological development, regulatory changes, industry practices and user feedback, etc. This information can be used to determine whether the standard needs to be revised or updated.
④ Review of standard documents: The committee conducts a detailed review of the standard documents to identify any problems, inconsistencies or areas for improvement. This may include technical errors, regulatory omissions, ambiguous terminology, etc. SGS / TUV factory cnc machining parts molding manufacturers usa
⑤ Make suggestions and modifications: Based on the results of the review, the committee makes suggestions and modifications to make the standards more accurate, complete and keep pace with the times. This may include new chapters, revised terms and definitions, deletion of content that is no longer applicable, etc.
⑥Public solicitation of opinions: Submit the modification suggestions to relevant stakeholders, such as industry associations, government agencies and standard users, to obtain their opinions and feedback. This helps ensure that changes are widely accepted and supported.
⑦ Final review and release: After obtaining necessary feedback and approval, the standard document is finally revised and released. This may require approval procedures by a standardization organization or standards-setting body.
⑧Promotion and training: Once the standard document is updated, relevant stakeholders need to be promoted and trained to ensure that they understand and comply with the new standard requirements.
⑨ Periodic review: Ensure that the standards are reviewed regularly to reflect ongoing changes in technology and regulations, and necessary revisions are made.
The review of additions and revisions of relevant standards is a key step to ensure that standard documents are consistent with reality, to meet the needs of technology and industry, and to ensure the quality and safety of products, services, and processes. - Record in quality control plan
(1) Recorded item by item for each project.
(2) The entry will be confirmed again by the relevant personnel at the same time. SGS / TUV factory cnc machining parts molding manufacturers usa
- When the quality control plan is completed, it will be given final approval by relevant supervisors and senior supervisors, and can be adjusted or revised if necessary.
- How to set control points in process control
- Where in the process, what control point is set is the key to whether the process control can be carried out effectively and smoothly.
- General control points can be divided into:
(1) How to set control items
① Give a brief explanation of what the unit project does. To put it simply, tell the online staff what you mainly do.
② Use the question “Why is this project needed?” to clarify the purpose and mission of the project (why), let him know certain standards, and know what level of this unit project is necessary.
③Use the “why-why” approach to high-level function exploration to make it clearly related to the quality characteristics of the final product and accurately reflect the quality of the process.
④ For ② and ③, set evaluation characteristics that can be measured to achieve the goals as control items.
⑤ If the selected control item cannot be quantified or is difficult to measure, it can be selected from the surrogate characteristics that are related to this item and can be quantified. For example, the surrogate characteristics of smoothness include friction coefficient, number of concave and convex points per unit…
⑥ Try to select intermediate proxy characteristics that can quickly know the results, so that abnormalities can be detected in a timely manner, such as the strength of metal. The intermediate proxy characteristics can be thickness, density, etc. SGS / TUV factory cnc machining parts molding manufacturers usa
⑦ Try to make full use of repeated exploration of upper and lower functions to make the relationship between them clearer and more permeable to the whole.
(2) How to set inspection items
① Divide the unit project into element operations
② List the conditions required for 4M in each element operation, so that the omission of factors can be reduced, such as
*People: The conditions, abilities, cognition, etc. that personnel should possess to perform this operation.
*Material: Characteristic values, specifications, etc. of parts, materials, and semi-finished products.
③Review the impact of various conditions on control items
*Set those with the greatest impact as inspection items, rather than treating all causes as inspection items.
*The inspection items should be as specific and clear as possible. If the construction is improper → how to judge the improper construction? Improper: There must be standards, methods or conditions for judgment. SGS / TUV factory cnc machining parts molding manufacturers usa
- For operations that are prone to mistakes or involve human attention or negligence, try to use foolproof methods.
*The setting of inspection items should involve those in charge of actual operations.
- Precautions for the production and application of quality control plans
- In addition to quality, recorded items may also include quantity and cost; in addition to formal projects, they may also include preparatory projects.
- Additions and revisions to standards after process analysis should be reflected in the quality control plan.
- Control points should be checked regularly to see if they are appropriate; or when there are abnormalities in the process, they should also be checked to see if they are appropriate, whether changes are necessary, etc., and PDCA should be performed continuously.
- Review the cycle, forms, etc. of the management method from the perspective of an operator to make it easy to carry out actual inspections.
Use the control plan as the basic data and cooperate with the operating standards to create operating instructions to strengthen the independent management of personnel.
ISO 5807, GB 1526, etc., document symbols and specifications for information processing, data, program and system flow charts, program network diagrams and system resource diagrams.SGS / TUV factory cnc machining parts molding manufacturers usa