08 Manufacturing and Assembly Planning Flashcards
Manufacturing Planning - Considered Activities
- Provision of work pieces
- Provision of information
- Buffering of work pieces
- Tool change
- Process-Monitoring
- Staging of work pieces
- Removal of chips
- Measuring, Checking
- Work piece change
Manufacturing Planning - Considered Resources
- Manufacturing Systems
- Machines
- Tools
- Fixtures
- Employees
- Material
Steps of manufacturing planning
- Description of machining task
- Derivation of technology requirements
- Determination of capacity requirements of manufacturing systems and machines
- Determination of organization form
Machining task
The machine has to meet the requirements that are necessary to carry out the machining task.
* Geometry of work piece (e.g. size, type and quantity of molded elements)
* Technological data (e.g. material, tolerance requirements, pre-machining)
* Organizational data (e.g. part families, number of variants etc.)
* Geometry of molded elements (e.g. bends/radii, tolerances)
Technology requirements
Can be derived from the machining task. Specify the manufacturing processes and performance parameters of the machines.
* Necessary operation type
* Necessary power
* Necessary speed graduation
* Necessary machine accuracy
Job Shop Manufacturing
Frequently changing work pieces and small scale production
Group Manufacturing
Constant manufacturing methods and wide variety
Continuous Flow Manufacturing
Uniform/similar operation sequence and large scale production
Assembly Planning - Considered Activities
- Provision of information
- Storing
- Conveying
- Controlling
- Handling
- Adjusting
Assembly Planning - Considered Ressources
- Conveyance equipment
- Storage equipment
- Handling equipment
- Assembly equipment
- Employees
- Assembly objects
Focus of assembly planning
The focus of assembly planning is the joining of components to assemblies and end products.
Steps of assembly planning
- Description of assembly task
- Determination of assembly structure
- Determination of capacity requirements
- Determination of organization form
Assembly Structure
Assembly structure determines the internal structure of the assembly and describes its personal, organizational and technical backgrounds for assembling a specific product program.
Objectives of subdivision into sub-assemblies and main assembly
- Reduction of the cycle-time
- Decoupling of subsystems
- Concentration of the flow of variants
- Easing the opportunities of automation of subsystems
- Specialized conveyance systems for basic parts and components
- Good access to assembly objects in the preassembly
- Opportunity to reallocate assembly volumes to suppliers
