- metal stamping tools - The use of micrometer

Metal stamping tool micrometer, also known as spiral micrometer measuring tool, measure is using spiral movement principle of vice and reading a micrometer measuring tool, micrometer is a mechanical processing, metal processing, electron industry etc. One of the most commonly used in measuring precision measuring tool, its precision is higher than vernier caliper, inside diameter micrometer, according to the use outside diameter micrometer, depth micrometer and a dedicated thread pitch diameter size of the thread micrometer and measurement gear base tangent length of common normal micrometer, micrometer measuring precision of 0. 01mm。 Outside micrometer is commonly used in the production of measuring tool, mainly used to measure the workpiece size such as length, width, thickness and outside diameter size and its measurement precision of 0. 01 mm, its measuring range to step in every 25 mm. The specifications of the commonly used outside micrometer is 025 mm, 2550 mm, 5075 mm, 75 - 100 mm and 100 ~ 125 mm. ( 1) Outside micrometer measuring principle: micrometer screw thread pitch is 0. 5 mm, when the differential cylinder rotation week, micrometer screw axial moving is 0. 5 mm fixed sleeve, which is engraved with clearance is zero. 5 mm scale line, differential Jane on the circumference of a circle evenly with 50. Therefore, when differential cylinder each turn one, micrometer screw move is 0. 5/50 = 0. 01 mm, the accuracy is 0. 01mm。 ( 2) Outside micrometer reading method: first read fixed on the casing exposed the scribed line on the number of integer mm and half a millimeter. Look at which moment line differential cylinder with baseline alignment of casing, read the decimal part of less than half a millimeter. Finally add those two readings, which is a measurement of workpiece size. Shown are the two instances outside micrometer to measure results. ( 3) Use method and matters needing attention of micrometer a: according to the characteristics of the workpiece to be measured, size, and selects the appropriate type, measurement range and accuracy of index value, general measurement range is 25 mm, if you want to measure 20 & plusmn; 0. The size of 03, can choose 0 ~ 25 mm micrometer. Before measurement, the first two micrometer measuring head is wiped clean and then to zero calibration. Measurement, the workpiece to be measured with micrometer to the positive, to guarantee the accuracy of the measurement location. When using a micrometer, adjust the first differential cylinder, the opening is slightly greater than the measured size, measurement can turn the differential cylinder, first when the micrometer screw will contact surface, then turn the ratchet, anvil, micrometer screw end face and tested at the contact surface, should be rotating force measuring device. B: readings, line is to be made on the alignment of the scribed line USES and correct readings; Pay special attention to observation line under the ruling position of the casing and prevent the misreading of 0. 5 mm。 C: it is strictly prohibited in the rough surface of the workpiece, motion artifacts or higher temperature measurement on the workpiece, in case of damage the essence and effects of the micrometer measuring precision. Use wipe grease, release professional box, placed in a dry place. ( 4) Inside diameter micrometer: can be used to measure 5 ~ 30 mm aperture, dividing the value 0. 01mm。 The micrometer scribed line, in contrast to the outside micrometer, clockwise differential cylinder, activity claw to the right, measured value increase. Because on the surface of the structure design, the measuring accuracy is lower than other types of micrometer. Dongguan precision electronic technology co. , LTD. , established in January 2008, is a professional design and manufacture of precision stamping die and precision metal stamping parts of ODM/OEM professional manufacturers. High-speed continuous terminal stamping dies, precision terminal, high precision products unit price have advantage, terminal (size tolerance can guarantee The size of the + / - 0. 01, bending size + / - 0. Less than 3 mm) 。 High yield of stable quality, stable performance. Precision contact: wish you a prosperous business, everything goes well, if you want to learn more dynamic, can scan the qr code, pay attention to the public. , is committed to precision stamping processing factory of the world's most professional electronic components