Machining process design

Design Principles:


(1) The designed process specification should be able to guarantee the processing quality of the machine parts (or the assembly quality of the machine) and meet the various technical requirements specified on the design drawings.


(2) The process should have a higher productivity, so that the product can be put on the market as soon as possible.


(3) Try to reduce manufacturing costs


(4) Attention should be paid to reducing the labor intensity of workers and ensuring production safety.


Original data:


(1) Product assembly drawing, parts drawing.


(2) Product acceptance quality standards.


(3) The annual production program of the product.


(5) The production conditions of the manufacturing plant, including the specifications, performance and current status of machine tools and process equipment, the technical level of workers, the ability of the factory to make process equipment, and the power and gas supply capabilities of the factory, etc. .


(6) Design manuals and related standards required for process specification design and process equipment design.


(7) Excellent manufacturing technology materials at home and abroad, etc.


Step content:


(1) Analyze and research product assembly drawings and parts drawings.


(2) Determine the blank.


(3) Draw up the process route and select the positioning base surface.


(4) Determine the equipment used in each process.


(5) Determine the cutting 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 size and tolerance of the process.


(8) Determine the cutting amount.


(9) Determine the working hour quota.