The fastener pin consists of three parts: guide, positioning and handle, to ensure that the guide part of the pin can enter and exit freely in the positioning hole. Marking of fastener pins: Mark the sub-grade and the corresponding RPS point name in the groove of the handle. According to the RPS characteristics of the part, the fastener pins are correspondingly set as tapered pins or cylindrical pins.
In the positioning hole, in order to ensure the accurate positioning of the fastener pin, a guide bush must be installed, and the guide bush and the gauge body must be bonded. The structure of the fastener pin and the corresponding guide bushing can be divided into an anti-rotation structure and a non-anti-rotation structure according to the different requirements of the shape of the hole.
The inspection pin is used to inspect the size and position of the hole to be measured. The detection pin consists of three parts: guide, detection and handle. In the detection hole, in order to ensure the smooth detection of the detection pin, a guide bush must be installed, and the guide bush and the inspection tool body are bonded and connected. In order to ensure the accurate positioning of the detection pin, the guide bushing must be installed, and the guide bushing and the inspection tool body must be bonded.
The structure of the measuring pin and the corresponding guide bushing can be divided into a non-rotating structure and a non-rotating structure according to the shape of the hole to be detected. If there are many holes to be inspected with the same diameter and the same position tolerance requirements on the part at the same time, and these holes must be inspected with inspection pins, a inspection pin is usually set. The same principle applies to twins.
