PROCESS PLANNING AND JOB DESIGN
PLANNING A PRODUCT DESIGN
Process planning takes as its input the drawings or other specifications that might indicate what is to be made, and also the forecasts, orders, or contracts that indicate how many are to be made.
The drawings then are analyzed to determine the overall scope of the project.
If it is a complex assembled product, considerable effort may go into “exploding” the product into its components of parts and subassemblies
Then, for each part, a detailed routing through the system is developed.
Technical knowledge of processes, machines, and their capabilities is required, as well as a knowledge of costs and production economics. Ordinarily, a range of processing alternatives is available.
The selection may be influenced strongly by the overall volume and projected stability of product design.
The product that is to be manufactured is analyzed from a technological point of views to determine what processes are required.Schematic and graphic model-commonly are developed to help visualize the flow of material and the relationship of parts (e.g. where they flow into the assembly process, which parts make up subassemblies, and where the purchased parts are used in the assembly sequence).
If the product already is engineered, we have complete drawings and specifications of the parts and their dimensions, tolerances, and materials to be used.
From the specifications and the forecast, we can plan of “how to manufacture”. Decision must be made concerning which parts to purchase and which to manufacture in-house.
The engineering drawings specify the locations, sizes, and tolerances for holes to be drilled, surfaces to be finished, etc. for each part.
With this information, together with estimates of quantities to be produced and of manufacturing processes, we can specify the most economical equipment, processes, and sequences of processes.
Process planning takes as its input the drawings or other specifications that might indicate what is to be made, and also the forecasts, orders, or contracts that indicate how many are to be made.
The drawings then are analyzed to determine the overall scope of the project.
If it is a complex assembled product, considerable effort may go into “exploding” the product into its components of parts and subassemblies
Then, for each part, a detailed routing through the system is developed.
Technical knowledge of processes, machines, and their capabilities is required, as well as a knowledge of costs and production economics. Ordinarily, a range of processing alternatives is available.
The selection may be influenced strongly by the overall volume and projected stability of product design.
The product that is to be manufactured is analyzed from a technological point of views to determine what processes are required.Schematic and graphic model-commonly are developed to help visualize the flow of material and the relationship of parts (e.g. where they flow into the assembly process, which parts make up subassemblies, and where the purchased parts are used in the assembly sequence).
If the product already is engineered, we have complete drawings and specifications of the parts and their dimensions, tolerances, and materials to be used.
From the specifications and the forecast, we can plan of “how to manufacture”. Decision must be made concerning which parts to purchase and which to manufacture in-house.
The engineering drawings specify the locations, sizes, and tolerances for holes to be drilled, surfaces to be finished, etc. for each part.
With this information, together with estimates of quantities to be produced and of manufacturing processes, we can specify the most economical equipment, processes, and sequences of processes.
