What is a routing?
- A routing is a type of master data
- It describes how certain inputs (e.g. material) are transformed into a certain output (e.g. material), through defined operations
- A routing also defines the work centers and PRTs (production resources and tools) required for conducting the defined sequence of operations
- In addition, the routing also comprises standard values and times for the process steps defined in the routing
Steps for creating a routing
- Identify initial work piece / item
- Define sequence of operations
- Assigning machine required for operations
- Assigning PRTs (production resources and tools)
Approaches to routing creation
Non-standardized work pieces.
No re-use of routings.
Partly standardized work pieces.
Addition, deletion & replacement of operations.
Variation of parameters.
Standardized product range.
Complete re-use of routings.
Describes production of a material.
Various routings for same material, e.g. for lot size ranges.
Can copy reference operation sets to minimize maintenance/creation effort.
|Reference operation set:|
Sequence of operation frequently repeated in a production cycle.
Can be referred to or copied when needed.
Works as a template in routings.
A change in the reference operation set adjusts all routings referencing it.
Constant reference time and variable production quantity.
Describes quantity to produce within given time period.
Production rates are maintained for each operation in the routing.
|Reference rate routing:|
A template for rate routings.
Similar to reference operation sets.
Routing vs. rate routing
|Used for discrete manufacturing.|
Has set-up times.
Times (e.g. machine time) are specified on fix, defined base quantity.
Used for order based costing.
Created with TC CA01.
|Used for repetitive manufacturing.|
Does not have set-up times.
Times (e.g. machine time) fixed and the quantities can be specified.
This results in ratesUsed for period based costing.
Created with TC CA21.