Measuring the dimensions of a bore is an essential aspect of quality control in many industries such as automotive, aerospace, and manufacturing. There are several methods for measuring bore dimensions, and the choice of method depends on the specific requirements of the application. Here are some of the most common methods for measuring bore dimensions:
1. Bore gauge:
A bore gauge, also known as an inside micrometer, is a precision instrument that is used to measure the inside diameter of a bore. The gauge consists of a spindle with a set of interchangeable measuring heads that can be inserted into the bore. The measuring heads are then expanded using a lever, and the reading is taken using a micrometer or digital display.
2. Holtest / Three Point Micrometer:
A Holtest, also known as a Three Point micrometer, is a precision instrument that is used to measure the inside diameter of a bore. The gauge consists of a micrometer head with a set of three pins heads that can be inserted into the bore. Measurement can be made close to bottom of the blind hole. Deep holes can be measured by attaching an extension rod.
3. Plug gauge:
A plug gauge, also known as a pin gauge, is a cylindrical gauge that is used to check the internal diameter of a bore. The gauge is inserted into the bore, and the fit is checked by observing the clearance between the gauge and the bore. Plug gauges are typically used to check the dimensional accuracy of small bores.
4. Air gauge:
An air gauge, also known as an air micrometer, is a non-contact method of measuring the internal diameter of a bore. The gauge uses a jet of air to measure the distance between the bore and a reference surface. The gauge is capable of measuring bores with high accuracy and speed, and is commonly used in high-volume production environments.
5. Coordinate measuring machine (CMM):
A CMM is a precision instrument that is used to measure the dimensions of complex parts. The CMM uses a probe to take measurements of the bore, and the data is then analyzed using software to determine the dimensions of the bore. CMMs are commonly used in the aerospace and automotive industries.
In summary, measuring the dimensions of a bore can be done using various methods, including bore gauges, plug gauges, air gauges, and CMMs. The choice of method depends on the specific requirements of the application, including the size, accuracy, and complexity of the bore.
Bombay Tools Supplying Agency Pvt. Ltd. can provide solutions for all the above-mentioned methods of measuring tools. Kindly mail info@btsa.in for more details.
