Method and apparatus for inspecting communicating hole of a cast molded article
AssigneeRyoei Engineering Co., Ltd.
InventorsMiyuki Satou, Oscar Vanegas, Toyokazu Itou
Life of this patent
Estimating the term…
Abstract
A transmitter of audible sound waves is disposed at one end of a communicating hole of a cast molded article such as a cylinder block, and a receiver of audible sound waves is disposed at the other end of the communicating hole. The quality of the communicating hole is determined by receiving audible sound waves from a transmitter which have passed through the communicating hole and computing and processing a frequency spectrum of the received audible sound waves based on a reference frequency spectrum.
Claims11
A method of inspecting a communicating hole of a cast molded article, comprising the steps of:
- emitting an audible sound wave from one end of a communicating hole of a cast molded article,
- receiving the audible sound wave which has passed through said communicating hole at another end of the communicating hole, and
- determining quality of the communicating hole by computing and processing a frequency spectrum of said received audible sound wave based on a reference frequency spectrum.
An apparatus for inspecting a communicating hole of a cast molded article, comprising:
- a transmitter of an audible sound wave disposed at one end of a communicating hole of a cast molded article;
- a receiver disposed at another end of said communicating hole for receiving the audible sound wave from the transmitter that has passed through the communicating hole;
- and
- a computing and processing device for determining quality of the communicating hole by computing and processing a frequency spectrum of the audible sound wave received by said receiver based on a reference frequency spectrum.
Dependencies are inferred from the claim text.