Thread Ring Gauges, as a precision "gauge", are mainly used to detect the mean diameter of standard external threads. It usually comes in a set of two, one is a through gauge and the other is a stop gauge. The mean diameters of the internal threads of these two ring gauges are precisely manufactured according to the maximum limit size and minimum limit size of the standard thread mean diameter, ensuring their high-precision measurement performance. In appearance, one end of the through gauge is usually designed to be longer than the stop gauge.
When inspecting the external threads of Thread Ring Gauges, try to screw the two ring gauges into them separately. There is no special requirement for the order of screwing in. Judge according to the following phenomena:
If the through gauge cannot be screwed in, it means that the mean diameter of the thread is too large and the product is unqualified.
If the stop gauge can be screwed in smoothly, it means that the mean diameter of the thread is too small and the product is also unqualified.
When the through gauge can be easily rotated at any position of the thread, and the stop gauge cannot continue to rotate after being screwed in one to three turns (sometimes it may be screwed in one or two turns more, but the thread head does not exceed the end face of the ring gauge), it means that the middle diameter of the external thread being tested is just within the "tolerance zone", so the product is qualified.
In the field of industrial product procurement and inspection, Thread Ring Gauges and stop gauges are key measuring tools, and their correct operation and maintenance are crucial. For Thread Ring Gauges, first select the appropriate specifications according to actual needs to ensure that the measurement basis is accurate. During the operation, ensure that the thread surface is clean and the force is moderate during measurement to avoid errors caused by excessive force. When inspecting the workpiece, do not twist the thread gauge with force. Use three fingers to rotate it naturally and smoothly and stop it. The thread gauge should also be naturally withdrawn when it withdraws from the last circle of the workpiece. Do not pull out the thread gauge with force, otherwise it will affect the error of the product inspection result and damage the thread gauge.
After use, it needs to be cleaned and applied with anti-rust oil in time and properly stored. The use of stop gauges also requires attention to specification selection, cleaning the surface to be measured before measurement, uniform force during operation, and steady operation with one or both hands. In terms of maintenance, stop gauges also need to be cleaned, rust-proofed and properly stored. In summary, by strictly abiding by the operating procedures and maintenance details, we can effectively improve the measurement accuracy of Thread Ring Gauges and stop gauges, while extending their service life, providing strong support for the company's quality control.
The accuracy of the measurement results can be guaranteed through the standardized use of Thread Ring Gauges. Users should ensure the correct operation process according to the operating specifications and be responsible for the maintenance and maintenance of the instrument.
