Jewelry craft measuring tools—

In the jewelry production process, whether the jewelry craftsmanship is qualified or not can be judged only after measuring with measuring tools. The correctness of the indicating value of the measuring tool is directly related to the correctness of the qualification of the jewelry product. The following is a brief description of several measuring tools that will be used in the process. 1. In order to improve the reading accuracy of the vernier caliper, the scale value on the ruler must be as small as possible. This requires the scale to be dense and the width of the engraved line to be thin. This is not only difficult in process manufacturing, but also visually observed during use. difficult. If you put a ruler with a thicker scale value side-to-side together, there will be a slight error between the marking lines using them, which can be immediately seen. The vernier caliper is to use this feature, add a scaled vernier ruler to the main ruler of the scribing line for reading, as shown in the figure, the main ruler has a scale of 1mm. Each scale of the cursor is 0.98mm. When in use, the main ruler reads as an integer, and the cursor reads as a decimal (<1mm), and the sum of the two is the actual size. 2. Outer diameter micrometer The outer diameter micrometer is made by the principle of threaded transmission. When threaded transmission, the stroke in the axial direction is proportional to the thread rotation angle. The thread pitch is generally set to 0.5mm, and there are 50 divisions on the circumference of the microtube. Each rotation of one division causes the line rod to move 0.01mm in the axial direction. When the micrometer is reading, the measuring axis is engraved as an integer (>1mm), and the decimal is read on the micrometer. The sum of the two is the actual size. The actual reading is shown in the figure, and the reading is 14.10mm. 3. Digital caliper Digital caliper is a length measuring instrument that uses capacitive grating (or grating, etc.) measuring system and digital display for reading. The appearance is shown in the figure, and it is mainly used to measure the outer and inner dimensions of the workpiece. 1 inner measuring claw; 2 ruler frame; 3 brake screw; 4 display; 5 data output port; 6 ruler body; 7 outer measuring claw; 8 metric and inch conversion buttons; 9 zero setting button; 10 depth gauge. 4. Caliper with watch The appearance of caliper with watch is shown in the figure. The distance between the two measuring jaws of the caliper after the relative movement, indicating the integer part of the millimeter value on the ruler, and the decimal part of the millimeter value on the indicator. Calipers with a meter are mainly used to measure the outer and inner dimensions of parts. 1 ruler body; 2 inner measuring claws; 3 rack; 4 indicator; 5 fastening screws; 6 ruler frame; 7 depth gauge; 8 roller handle; 9 dial locking screw; 10 outer measuring claws. The above are the four measuring tools commonly used by Xiamen processing plants in measuring whether the jewelry process is qualified. If you want to know more about measuring tools and custom processing of jewelry, please contact us! ODM can be provided for similar samples/new styles/revisions. OEM customers can accept custom processing with patterns. Next: Talking about finding the 'pain' behind the processing of jewelry factory Previous: 6 common methods of jewelry inlay process丨