Part procurement system and part procurement method

A part procurement system for a construction machine comprising a file server, a terminal having a display device, a data input device and a control device and a communication device for communicating between the file server and the terminal, and performing procurement of a part required by a customer, wherein

• the file server stores BOM information that is part table information, CAD information that is computer-aided design information, part compatibility information, stock information and information about costs,
• the control device of the terminal includes:
• a table creating portion which creates a usable candidate table that lists candidates for preparing a required part from a procured part compatibility table for single item including a part compatible with a procured part when a required part is a single-item part, a procured part compatibility table for assembly including an assembly part compatible with the procured part when a required part is an assembly part, and a procured part compatibility table for disassembly including an alternative part that can be used in place of the procured part when there is an upper part or an upper product containing the procured part, based on customer's requirements information about the procured part inputted via a data input device, and the BOM information, the CAD information and the part compatibility information inputted from the file server;
• an information adding portion which adds stock information, cost, lead time and additional work information about processing required to a part with mounting compatibility and a part that can be used as the alternative part to a part listed in the usable candidate table created by the control device;
• a judging portion which extracts candidate parts including candidates for the part and alternatives for the part satisfying the requirements with the required information regarding the procured part inputted via the data input device as the requirements from the usable candidate table to which the information is added by the information adding portion;
• and
• an outputting portion which outputs a signal for displaying the extracted candidate parts on a display device as a final candidate table based on the usable candidate table to which the information is added.