Micrometer use and reading, how does a micrometer read?

The measuring method of the micrometer.

Before measuring the object, first wipe the surface of the measuring object, then rotate the ratchet to adjust the distance between the measuring drill and the micrometer screw to be larger than the measured object, and then put the measured object.

When the micrometer screw is placed close to the object to be measured, and the ratchet wheel is slowly rotated until it clicks, the indicated value at this time is the size of the measured object.

After completing the reading of the object to be measured and recording, put down the micrometer cylinder and remove the micrometer.

After using the micrometer, wipe and clean the micrometer, and then put it in the box for storage, avoid heavy pressure and bending of the micrometer, and the micrometer drilling and micrometer screw should not be in contact, so as not to affect the micrometer measurement accuracy.

Reading method. 1. Read out the whole millimeter of the measured object in the fixed sleeve interval of the micrometer.

2. When reading the half-scale of the measured object, if in the fixed sleeve interval, after the whole scale is read, the half-scale is exposed, the reading is recorded; If the half-scale is not exposed, the reading is recorded as.

3. Read out the scale value aligned by the fixed sleeve longitudinally from the differential cylinder, which refers to the decimal part of the measured object (a few hundredths of a millimeter), less than one grid (a few thousandths of a millimeter), which can be used to determine the estimation method.

4. Finally, the sum of the two readings is the scale size of the measured object, and the final reading formula can be: the actual size of the measured object = fixed scale of the fixed sleeve + half scale + differential cylinder scale + estimated reading.

I'll show him this, I'll talk to you

Micrometer Reading Method:

1. Read out the millimeter integer and half millimeter integer of the workpiece from the engraved line exposed on the fixed sleeve.

2. The decimal part of the workpiece (a few hundredths of a millimeter) is read from the engraving of the longitudinal line alignment of the fixed sleeve on the differential cylinder, and the number of less than one grid (a few thousandths of a millimeter) can be determined by the estimation reading method.

3. Add the two readings together to measure the size of the workpiece.

To put it simply:

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). Write as n.

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

The second line of the micrometer fixed sleeve scale (horizontal reading) is 1 mm per grid, the first row above is the middle line of each millimeter, and the differential cylinder scale (reading on the circle) is millimeters in one circle, exactly 50 cells in one circle, and each square is 1 filament, millimeter = 50 filaments.

1. There are many kinds of micrometers, the common one is the outer diameter micrometer, which is used to measure the outer size of the measured object, which is composed of a measuring drill, a micrometer screw, a locking device, a fixed sleeve, a micrometer cylinder and a ratchet.

2. Check before reading. The drill should be smooth and flat, and the cylinder should be able to rotate flexibly.

3. Proofreading. It is necessary to ensure that 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.

4. When measuring the object, first rotate the ratchet to adjust the distance between the measuring drill and the micrometer screw to slightly larger than the size of the object, and then put the measured object into it, and slowly rotate the ratchet until it makes a clicking sound before starting to read.

5. The main scale of the micrometer is as follows:

6. Micrometer reading = reading of the main ruler of the fixed casing + reading on the differential cylinder, the example is as follows (if the scale mark of the main ruler of the casing and the front edge of the differential cylinder are in the situation of similar pressure and non-pressure in the reading, it should be determined whether it is included in the reading according to the reading on the differential cylinder, if the reading on the differential cylinder is greater than or equal to 0, it will be included in the reading, otherwise it will not be included in the reading).

Special Tips. 1.The main micrometer ruler is 1mm per grid, and the micrometer cylinder is per grid, don't make a mistake!

2.When reading, pay attention to the perpendicular line of sight and the scale, otherwise the read data will produce errors.

How to use the micrometer:

1. Clean the body of the micrometer and the anvil.

2. Then calibrate the micrometer to the zero line.

3. Place the test piece between the two working faces, adjust the micrometer cylinder, so that the working face is about to touch the test piece, and adjust the force measuring device until it stops when it hears three "clicks, clicks, clicks".

How to read a micrometer from 0.

Micrometer is a more precise length measuring instrument than vernier caliper, commonly used one of its measuring range of 25mm, the index value is, when measuring data with a micrometer, it can be estimated to read the 1 10 digits of the index value.

The main part of the micrometer is a micro-moving screw with a pitch of mm, the screw rotates one time, and it moves forward or backward mm in the direction of the axis. The screw rod is connected with the screw shank, and the differential cylinder scale along the circumference is attached to the shank, a total of 50 equal divisions, when the screw rod moves along the axis direction, the differential cylinder scale on the screw shank turns one divisive, that is, mm.

How to use the micrometer, will you.

First, the use of micrometers

1. Before use, the zero point should be checked, and the fine-tuning knob should be slowly rotated to make the measuring rod and the measuring anvil come into contact until the ratchet makes a sound.

The zero line on the movable ruler (movable sleeve) should be aligned with the reference line (long horizontal line) on the fixed sleeve, otherwise there will be zero error.

2. Hold the ruler frame in your left hand, turn the coarse adjustment knob with your right hand to make the distance between the measuring rod and the measuring anvil slightly greater than the measured object, put in the measured object, and rotate the protective screw.

Hold the object until the ratchet makes a sound, and then flip the fixing knob to fix the rod and read.

Second, the micrometer 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). Write as n.

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

Because the reading results of the spiral micrometer are accurate to the millith in mm, the spiral micrometer is also called a micrometer.

3. Precautions for the use of micrometers.

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 production.

Excessive pressure allows for accurate measurement results and protects 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 place, which cannot be thrown away casually, even if the zero point of the fixed scale is exactly the same as that of the movable scale.

The tick line is aligned, and it should also be read as "0" in the thousandth place.

4. When the small anvil and the micrometer screw are close together, the zero point of the movable scale does not coincide with the zero point of the fixed scale, and there will be zero error.

Correct, i.e., remove the value of zero error from the last length reading.