The concept of production capacity: distinguishing between broad and narrow sense

Types of production capabilities: design, determination, planning

Factors affecting an enterprise's production capacity: quantity of fixed assets, working hours, production efficiency

Accounting of production capacity: equipment groups, work sites, assembly lines

The meaning of production plan: medium and long-term production plan (3 years or 5 years, or longer), annual production plan (the core of the company's annual business plan, 1 year), production operation plan (monthly, weekly, executive plan, Within 1 year)

Production planning indicators: product variety, quality, output, output value (gross industrial output value and industrial added value) indicators

The annual average distribution method of output in each period distributes the planned output of the whole year evenly to each quarter and month; the social demand for this product is relatively stable

The distribution method of evenly increasing the output of each period evenly arranges the planned output of the whole year to each season and each month; the society's demand for this product continues to increase

The parabolic growth distribution method of each period's output requires the arrangement of monthly tasks to make the output growth curve assume a parabolic shape; the development of new products, and the demand for this product continues to increase.

Content: 1. Prepare work plans for all levels of the enterprise; 2. Prepare production preparation plans; 3. Calculate load rates; 4. Dispatch workers for daily production, production

Features: 1. The planning period is short, quarter, month, day, hour; 2. The planning content is specific; 3. The planning unit is small.

Volume standards for mass production enterprises: cycle time (time interval between two adjacent batches of processing), rhythm (time interval between two adjacent batches of processing), standard work instruction chart for the assembly line, work-in-progress quota

Volume standards for batch production enterprises: batch size, production cycle (one batch), production interval (two adjacent batches), production lead time

Volume standards for single-piece and small-batch production enterprises: production cycle, production lead time

Work-in-progress quota method: suitable for large-scale mass production enterprises, the process is in reverse order, and two calculation formulas are mastered

Lead time method (cumulative numbering method): Applicable to batch production enterprises; the closer to the completion stage of production, the smaller the number; the further to the beginning of production, the larger the number. Understand the calculation formula of the cumulative number of production numbers in this workshop and the cumulative number of input numbers in this workshop

Production cycle method: suitable for single-piece and small-batch production enterprises

Broadly speaking, including planning, production progress control and scheduling, inventory control, quality control, cost control, etc.

In a narrow sense, also known as production operation control, it refers to production progress control.

Establish control standards: generally include analogy method, decomposition method, quota method and standardization method

Measurement comparison: Obtain the output value of the system through production statistics, and conduct comparative analysis with the predetermined control standards.

Control decision (deviation = target value - actual value)

Implement execution

Pre-event control: feedforward control, carried out before the production activities of this period are started.

In-process control: Obtain information from the job site and perform job accounting in real time

Post-event control: feedback control, based on comparing the production results of this period with the plan formulated at the beginning of the period

Overview of production schedule control: the goal is "on-time production"

The purpose of production progress control: to ensure that products can be assembled and shipped on time

Contents of production progress control: input progress control (before), process progress control (middle), production progress control (after)

The concept of work-in-progress: work-in-progress is divided into rough products, semi-finished products, finished products before storage and workshop work-in-progress

Principles of work in process control

Work content of work in progress control

Work-in-progress quota: refers to the minimum reserve quantity of work-in-progress necessary to ensure the connection in quantity. It is a necessary and necessary condition to ensure continuous production.

The concept of inventory control: focus on mastering the four functions of inventory control

Reasonable control of inventory: master the problems caused by too large or too small inventory; inventory management costs (warehousing costs, ordering costs and opportunity costs); basic methods of inventory control (quantitative control method, periodic control method, Pareto method/ABC taxonomy)

The concept of production scheduling: based on the production schedule

The main content and basic requirements of production scheduling work

The organization of the production scheduling system: large and medium-sized enterprises set up factory levels, workshops, and sections; small and medium-sized enterprises set up factory headquarters, workshops

Scheduling system (five types): duty system, reporting system, meeting system, dispatching system, class meeting system

Material Requirements Planning MRP: Master Production Plan, Bill of Materials, Inventory Processing Information

Manufacturing resource planning MRPII: planning and control process system, basic data system, financial system

Enterprise Resource Planning ERP: Production Control (Core Module), Logistics Management, Financial Management, Human Resources

The core of lean thinking is the continuous elimination of waste

The specific goals of lean production are: efficiency, quality, cost, delivery time, safety, morale, etc.

The basic principles of lean thinking: correctly define value, identify value flow, flow, pull, and pursue perfection

Toyota Lean Production Method