Understanding the Types and Uses of Pin Gauges

Metric pin gauge and imperial pin gauge

1. metric pin gauge: specifications range 0.10mm ~ 50.00mm; interval: 0.005mm 0.01mm 0.02mm 0.025mm 0.05mm 0.10mm 0.50mm 1.00mm, etc.; accuracy ± 0.001mm ± 0.002mm ± 0.0005mm, etc.

2. inch pin gauge: specification range 0.011in ~ 1.000in; interval 0.001in; accuracy ± 0.001mm ± 0.002mm + 0.0025

Steel Pin Gauge Set

The use of pin gauge. 

Production of each product parts, first whether the tolerance size has been decided, in the upper limit and lower limit tolerance control range. Use GO (through gauge); NO-GO gauge (stop gauge) of the tolerance method of the gauge to implement management. For small production quantities, it is possible to reduce the cost of purchasing gauges and become proficient in their operation. It is easy to obtain the interchangeability of products, and it is very helpful in the field or in the inspection room for quality and yield improvement.

In mass production, a gauge with fixed dimensions is often used to inspect workpieces, and this gauge is called a gauge. The dimensions on the drawing of the workpiece are the limit dimensions that guarantee interchangeability. Measure the size of the workpiece gage is usually made of two limit size, that is, the maximum limit size and minimum limit size. Measure the smooth hole or shaft with the gauge is called smooth gauge. Smooth gauge according to the different used to measure the internal and external dimensions, divided into two kinds of gauge and plug gauge.

Reasonable use.

1. Before use, check the plug gauge measuring surface, can not have rust. Pi Feng, scratches, black spots, etc.; plug gauge mark should be correct and clear.

2. The role of the plug gauge must be in the cycle of calibration period, and accompanied by a certificate of conformity or mark, or other documents sufficient to prove that the plug gauge is qualified.

3. The plug gauge measurement of the standard conditions: the temperature of 22 ° C, the force of 0. In actual use is difficult to achieve this condition requirements. In order to reduce the measurement error, try to use the plug gauge and the measured part in the isothermal conditions for measurement, the force used to be as small as possible, do not allow the plug gauge force to push into the hole or rotate while pushing in.

4. Measurement, plug gauge should be inserted or pulled out along the axis of the hole, can not be tilted; plug gauge into the hole, not allowed to turn or shake the plug gauge.

5. We are not allowed to use the plug gauge detection is not clean workpiece.

Maintenance and care.

1. The plug gauge is one of the precision gauges, use to hold gently, do not bump its working surface.

2. The plug gauge in each use, shall immediately use a clean soft cloth or fine cotton yarn to wipe the surface of the plug gauge clean, coated with a thin layer of anti-rust oil, put into a special box, stored in a dry place

3. The plug gauge to implement the cycle of calibration, calibration cycle determined by the measurement department.