How does a novice understand a micrometer?

The micrometer is read as follows:1. Before use, the zero point should be checked, the leading edge of the differential cylinder should be aligned with the horizontal line, and the baseline of the spindle scale should be aligned with the zero line of the cylinder.

2. When measuring the object, first rotate the ratchet to adjust the distance between the drill and the micrometer screw to slightly larger than the size of the object, and then it will be.

3. When reading, read the fixed scale first, and then read the half scale, if the half scale line has been exposed, it will be recorded. 5mm, if half a quarter.

4. When reading, read the fixed scale first, and then read the half scale, if half a scale.

The micrometer is a measuring tool, first look at the range and the indexing value, then look at the structure, know that you can measure like this, and then align the scale to read, the only thing is to note that this needs to be read by adding two parts together. Specifically, you can directly search for some small ** to take a look, or to see the ** explanation of the high school physics teacher.

1 Use of a micrometer.

Before measuring, the measuring surface of the micrometer should be wiped clean, and the center line of the fixed sleeve should be checked to see if the zero line of the movable sleeve coincides, and whether the axial position of the movable sleeve is correct. If there is a problem, it must be adjusted. When measuring, the measured piece is placed between the fixed anvil and the micrometering screw, generally rotate the movable sleeve first, when the measuring surface of the micrometer just touches the surface of the workpiece, use the ratchet for fine-tuning, and when the ratchet begins to make a clicking sound, stop rotating the ratchet, and the reading can be done.

2 Reading Method.

When reading, you should first look clearly at the scale mark exposed on the fixed sleeve, at which point you can read a millimeter or half a millimeter reading. Then read out the scale value of the movable sleeve scale aligned with the centerline of the fixed sleeve (each small grid of the scale on the movable sleeve is the measured value of the test specimen when the two readings are added.

3 Precautions for use.

When using a micrometer, the movable sleeve should not be forcibly turned; Do not clamp the micrometer firmly onto the workpiece after fixing it to avoid damaging the measuring surface or bending the screw. After the micrometer is used, it should be wiped clean, coated with anti-rust oil and stored in a dry box. In order to ensure the accuracy of the measurement, the calibration should be checked regularly.

Before use, the zero point should be checked: the leading edge of the cylinder is aligned with the horizontal line, and the baseline of the spindle scale is aligned with the zero line of the cylinder. When measuring an object:

First, rotate the ratchet to adjust the distance between the drill and the micrometer screw to slightly larger than the size of the object, then place the object in it, and slowly rotate the ratchet until it clicks before starting the reading.

Reading method: 1. Read the fixed scale first.

2. Read the half-scale again, if the half-scale mark has been exposed, it will be recorded; If the half-tick mark is not exposed, it is recorded as ;

3. Re-read the movable scale (pay attention to the estimation). denoted as n;

4. The final reading result is fixed scale + half scale + movable scale + estimated reading.

Extended Materials. The pitch of the precision thread of the micrometer is that the movable scale has 50 equal divisions, the movable scale rotates one time, and the micrometer screw can move forward or backward, so that each small division of rotation is equivalent to the forward or backward of the micrometer screw. It can be seen that each small division of the movable scale is indicated, so it can be accurate with a spiral micrometer.

Precautions when using a micrometer:

1. When measuring, it should be noted that when the micrometer screw is close to the measured object, the knob should be stopped and the fine adjustment knob should be used instead to avoid excessive pressure, which can not only make the measurement results accurate, but also protect the spiral micrometer.

2. When reading, pay attention to whether the notch indicating half a millimeter on the fixed scale has been exposed.

3. When reading, there is an estimated reading number in the thousandth, which cannot be thrown away casually, even if the zero point of the fixed scale is exactly aligned with a certain tick line of the movable scale, the thousandth should also be read as "0".

1. First of all, understand the structure of the micrometer, which is composed of an anvil, a ruler frame, a locking device, a microcylinder, a force measuring device, a fixed casing and other parts. 2. Secondly, before using the micrometer, loosen the locking device, if the micrometer is oily, it should be wiped clean, especially the two measuring surfaces. After cleaning, check that the zero site is aligned.

Rotate the measuring device, and when the screw comes into contact with the measuring anvil surface, it stops immediately when it hears a "click" sound. See if the two zero tick marks are aligned. If it is not aligned, it should be adjusted.

3. During the measurement process, rotate the micrometer cylinder first, and when the micrometer screw is close to the measured object, the measured object is a little away from the micrometer screw. 4. Then rotate the handwheel, and when the micrometer screw touches the object, it makes 3 to 5 sounds to stop rotating. 5. Read the integer part first, and take the end face of the differential cylinder as the reference to read out the integer millimeter part of the scale mark under the fixed sleeve.

6. Read the decimal part again, take the horizontal horizontal line on the fixed casing as the reading reference, read out the index value on the movable scale, and it should be estimated that the decimal part is, and finally, the integer plus the decimal is the data of the measurement result.