Machining process specification design

Process planning

Design principles:

(1) The designed process procedures should be able to ensure the processing quality of the machine parts (or the assembly quality of the machine), to meet the technical requirements specified in the design drawing.

(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) Pay attention to reduce the labor intensity of workers and ensure production safety.

Source information:

(1) Product assembly drawing, parts drawing.

(2) Product acceptance quality standards.

(3) The annual production plan of the product.

(5) The production conditions of the manufacturer, including the specifications, performance and existing status of the machine tool equipment and process equipment, the technical level of the workers, the ability of the factory to make its own process equipment, and the ability of the factory to supply power and gas.

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

(7) Advanced manufacturing technology data at home and abroad.

Step content:

(1) Analyze and study the assembly drawing and parts drawing of the product.

(2) Determine the blank.

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

(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 major process.

(7) Determine the processing allowance of each process, calculate the process size and tolerance.

(8) Determine the cutting amount.

(9) Determine the working hour quota.