1. Design principle:
(1) The designed process specification should be able to ensure the processing quality of machine parts (or the assembly quality of the machine) and meet the technical requirements specified in the design drawings.
(2) We should make the technological process have higher productivity and put the products on the market as soon as possible.
(3) Try to reduce manufacturing costs
(4) Pay attention to reduce the labor intensity of workers and ensure production safety.
source:
(1) Product assembly drawing, part drawing.
(2) Product acceptance quality standards.
(3) Annual production program of products.
(5) The production conditions of the manufacturing plant, including the specifications, performance and current status of the machine tool equipment and process equipment, the technical level of workers, the ability of the factory to make its own process equipment, and the power supply and gas supply ability of the factory.
(6) Design manual and relevant standards for process planning design and process equipment design.
(7) Advanced manufacturing technology information at home and abroad.
2. Step content:
(1) Analyze and study the assembly drawing and part drawing of the product.
(2) Determine the blank.
(3) Draw up the process route and select the base plane.
(4) Determine the equipment used in each process.
(5) Determine the tools, fixtures, measuring tools and auxiliary tools used in each process.
(6) Determine the technical requirements and inspection methods of each main process.
(7) Determine the machining allowance of each process, calculate the process size and tolerance.
(8) Determine the cutting parameters.
(9) Determine man hour quota.