Measuring the inner diameter of a metal pipe and which measuring tool to use 5

1.Vernier calipers. The disadvantage is that only the diameter of the mouth of the tube can be measured. The general accuracy is in millimeters.

2.Inner diameter micrometer. The inner diameter of the tube can be measured, but the disadvantage is that when the pipe diameter is small, it is inconvenient to measure the inner diameter, or even impossible to operate. The general accuracy is in millimeters.

3.Inner diameter scale. The internal diameter of the tube can be measured, and the diameter of the pipe can be easily measured as long as the diameter of the pipe is not larger than the gauge range. The disadvantage is that vernier calipers or spiral micrometers are required to be corrected to zero. Millimetre.

4.Inner caliper. The disadvantage is that it needs to be measured with other measuring tools, which requires high operation skills of the surveyor.

5.Gauge. Accurate, convenient, and fast, but it is not possible to indicate the value.

6.Special gage. It's quick and easy. However, the manufacturing cost is high, and it is suitable for parts with large batches.

7.Pneumatic gage. High accuracy (mm), easy to automate, can measure moving parts. But the range is small, and it is too expensive.

To measure the inner diameter of the metal pipe, a vernier caliper of appropriate range should be selected according to the measurement requirements, and the vernier caliper has the function of measuring the inner diameter, outer diameter and depth.

Indirect measurements are made with an inner micrometer or with a cylinder gauge. If the requirements are not high, you can use vernier calipers to measure.

"Vernier caliper" for measuring the inner diameter of a metal pipe!!

Vernier calipers, there is something like small wings on the back of the caliper, and it is possible to measure the inner diameter by sticking it in.

Vernier calipers I studied in high school physics class.

To measure the shaft diameter with a diameter of 25, the gage that should be selected is ().

a.Digital calipers.

b.Leverage dial gauge.

c.Altimeter.

d.Outer diameter micrometer.

Correct answer: d

Vernier caliper is a measuring tool for measuring length, inner and outer diameter, and depth. The vernier caliper consists of two parts: the main ruler and the vernier attached to the main ruler that can slide. The main ruler is generally in millimeters, and the vernier has or 50 sub-grids, according to the different sub-grids, vernier calipers can be divided into ten-degree vernier calipers, twenty-degree vernier calipers, fifty-degree vernier calipers, etc., the vernier is 10 divisions of 9mm, 20 divisions of 19mm, 50 divisions of 49mm.

There are two sets of movable measuring jaws on the main ruler and vernier of the vernier caliper, which are the inner measuring claw and the outer measuring claw, the inner measuring claw is usually used to measure the inner diameter, and the outer measuring claw is usually used to measure the length and outer diameter.

Working principle] Vernier caliper is an instrument commonly used in industry to measure the length, which is composed of a ruler body and a vernier that can slide on the ruler body. If you look at it from the back, the cursor is a whole. There is a spring between the vernier and the ruler body, and the elastic force of the spring blade is used to make the vernier and the ruler body close.

There is a fastening screw on the upper part of the vernier to fix the vernier anywhere on the ruler body. The ruler body and the vernier have measuring jaws, the width of the groove and the inner diameter of the tube can be measured by the inner measuring jaw, and the thickness of the part and the outer diameter of the tube can be measured by the outer measuring jaw. The depth gauge is connected to the vernier ruler to measure the depth of the groove and the cylinder.

There are scales on both the ruler and the vernier ruler. Take the vernier caliper accurate to the millimeter as an example, the minimum division on the ruler body is 1 mm, and there are 10 small equal divisions on the vernier ruler, with a total length of 9 mm, and each division is millimeters, which is a millimeter difference from the minimum division on the main ruler. When the measuring claws are brought together, the ruler body and the zero scale mark of the vernier are aligned, and their first scale mark is separated by millimeters, and the second scale mark is separated by millimeters by ,......The 10th tick mark is 1 mm apart, i.e. the 10th tick mark of the vernier is exactly aligned with the 9 mm tick mark of the master ruler.

When the linearity of the object measured between the measuring claws is millimeters, the vernier ruler should be moved to the right by millimeters. At this point, its first tick mark is exactly aligned with the 1 mm tick mark of the ruler. Similarly, when the fifth tick mark of the vernier is aligned with the 5 mm tick mark of the ruler body, it means that there is a millimeter width ,...... between the two measuring jawsAnd so on.

When measuring a length greater than 1 mm, the whole number of millimeters should be read from the tick mark opposite the "0" line of the vernier body.

So the answer is:; The last digit is allowed to have deviations).

Whether it is hot-rolled, cold-rolled, or plastic, rubber and air glue, steel, alloy and other materials can be used. Bi Ji.

The caliper is a non-contact measurement using optical measurement method, which can be installed in the production line at a speed of 500 data per second, and this detection method can cover the entire rolled product. There is no need to worry about the measurement accuracy, and it fully meets the production needs.

The measurement of cables and cables can not only detect the outer diameter, but also control the outer diameter size, which is an indispensable testing instrument for manufacturers who require high yield production.

For the steel rolled products produced in harsh environments, multi-axis probes are used, of which the eight-axis probe can detect the rolled products in an all-round way, and there is a professional measurement software analysis system, which combines numbers and images to intuitively display the production status, and has a data transmission function to accurately convey the measurement data to the control system in real time to achieve high-quality production.

For large-diameter pipe testing, there is no suitable equipment on the market for large-diameter rolling product testing, even if there is one, it is the most expensive and low precision, Lanpeng measurement and control for this large-diameter caliper to solve this problem, on the basis of reducing costs, increasing measurement accuracy, is currently a variety of large-diameter pipe testing is very high-quality equipment.

The outer diameter measuring instrument can be used in all aspects, such as cables, cables, metal wires, hoses, plastic pipes, glass pipes, round bars, high wires, rebars, pipes, bearings, metal processing and other round rolled products. It is a very practical testing instrument.

1) The scale on the scale corresponding to the right angle of the left triangular ruler is, the scale corresponding to the right angle of the right triangular ruler is, and the outer diameter of the steel pipe is:;

2) So the thickness of the steel pipe is:1

So the answer is:;

A vernier caliper with depth measurement is a gage that directly measures the diameter, width, length or depth of a workpiece.

Ordinary four-purpose calipers ......The most common gage.