How to use the outer diameter dial gauge, how to use the inner diameter dial gauge

An outside micrometer can be used to measure shaft diameter as well as roundness. It can also be used to measure the size of other shapes. Because it's so accurate.

Generally, measurements are carried out in place of calipers and other measures when the accuracy requirements are strict. Outer diameter micrometers can be divided into many types according to the shape. The commonly used small measuring range is 0--25mm;25--50mm.

Different measuring heads such as disc type, column type, sheet type, etc. The disc type can also be used to measure the pitch of gears.

I don't know if the above helps you?

First, roughly measure the size of the measured object, select the outer diameter micrometer according to the rough measurement, then adjust the basic size with a standard rod, and then measure the outer diameter of the measured object, and measure the accurate size of the measured object by adjusting the fine adjustment screw.

For example: use a general steel ruler or other ruler to measure the outer diameter of a cylinder, about 648mm, then choose an outer diameter micrometer with a measuring range of 650mm (generally you can adjust the distance from -25mm to +25mm), use a standard rod of 650mm (generally not) or an inner diameter micrometer to adjust the basic size of the outer diameter micrometer to 648mm, take it to measure the outer diameter of the cylinder, and measure the exact size by adjusting the screw, +, add or subtract from the basic size, so as to determine the precise outer diameter of the cylinder.

1. Clamp the dial gauge in the elastic chuck, call and turn the pointer around once, and tighten the lock nut or locking device

2. According to the nominal size of the measured aperture, select the corresponding size of the replaceable probe and install it on the gauge rod;

3. When installing the probe, check whether the measuring surface of the probe is worn. If the measuring surface is edged, it means that the measuring surface is no longer an arc surface, and such a probe cannot be used

4. Do not loosen the spring chuck for the inner diameter dial gauge of the zero state position to prevent the zero position from changing

5. When adjusting and measuring, after the probe of the inner diameter gauge is put into the ring gauge and the hole to be measured, hold the insulation sleeve with one hand and the lower part of the gauge rod close to the body with the other hand. The stem should be measured with a ring gauge as well.

The methods used for the inner diameter dial gauge include dial gauge installation, size setting, zero position adjustment, etc.

1. Dial gauge installation.

Insert dial gauge 1 into the shaft hole of the watch frame, compress a circle, and tighten the cause with a locking device 3.

2. The size is set to lead macro.

According to the name of the workpiece measured by Huai Zheng book, select the replaceable probe 9, and fix it on the main body 6.

3. Zero adjustment.

Determine the interchangeable probe and set the zero position of the dial indicator for the inner diameter. When determining the interchangeable probe, it is best to set the nominal size of the part to be measured at a position where the active probe is compressed by about half a minute of effective travel.

Features of the dial indicator:

The tapered frame, specially designed by Steili, facilitates the measurement of small slots and hard-to-reach workpieces in accordance with the Starrett standard. Easy-to-use annular knurled nut locking device locks the mandrel at any reading. The chrome-plated sleeve and micrometer cylinder use clear black tick marks for easy reading.

Sterei's unique state-of-the-art staggered sleeve design. Both the chrome sleeve and the cylinder have clear black graduation marks on the surface, and each graduation on the cylinder is marked with a number for quick and accurate reading. The friction sleeve device provides a constant pressure during measurement, without the need for a feel.

A ratchet trim fast-forward device coordinates measurement and fast-forward operation.

It has an extremely high-precision ultra-hard thread, the thread is made of special carbon steel, hardened and stabilized, and has a high precision and long service life. The balanced design features matte chrome plating for ease of use and reading, as well as protection against rust and increased wear resistance. The finely ground mirror dial indicator measures the surface to the unique design of Stelik to ensure accurate measurements.

The measuring surface is available in carbide, hardened steel or high-carbon steel. <>

Hello! An outside micrometer can be used to measure shaft diameter as well as roundness. It can also be used to measure the size of other shapes.

Because it's so accurate. Generally, measurements are carried out in place of calipers and other measures when the accuracy requirements are strict. Outer diameter micrometers can be divided into many types according to the shape.

The commonly used small measuring range is 0--25mm;25--50mm. Different measuring heads such as disc type, column type, sheet type, etc. The disc type can also be used to measure the pitch of gears.

I don't know if the above helps you?

Hope it helps, hopefully.

A dial gauge is a length measuring instrument that converts a general linear displacement (linear motion) into the rotational motion of a pointer by a gear or lever, and then takes a reading on a dial. The dial gauge is a very versatile indicator gauge for precision measurement. It is a comparison gauge that can only measure relative values, not absolute values.

It is mainly used to check the shape and position error of the workpiece. (such as roundness, flatness, verticality, circular runout, etc.), also commonly used for precision alignment of workpieces.

From the graduation value of the dial gauge, there are, and several. The number of graduation values is large, so this kind of dial indicator is called a dial gauge. Others are dial indicators. From the transmission principle of the dial gauge, it is divided into several types, such as tooth compartment transmission, lever gear transmission and lever screw transmission.

Dial indicator types:

1. The dial dial dial indicator 1 scale is a dial indicator.

1) The measurement axis moves 1mm is equivalent to a rotation of the long axis, and the measurement range varies from 5mm to 10mm.

2) The dial indicator with the scale. (3) The movement of the measuring shaft is equivalent to one rotation of the long axis, and the measurement range varies from 1mm, 2mm and 5mm.

2. Lever dial gauge.

In the lever dial indicator, there are generally dial gauges with a measuring range according to the indexing and a dial gauge with a measuring range according to the index.

3. Electronic digital dial gauge.

4. Digital thickness measuring dial gauge.

5. Digital display inner diameter dial gauge.

A dial gauge is a table-type universal length measuring tool made of a precision rack and pinion mechanism. The indication range of the dial gauge is generally 0 10 mm, and the large one can reach 100 mm. Changing the shape of the probe and matching it with the corresponding bracket can be used to make deformed varieties of dial gauges, such as thickness dial gauges, depth dial gauges and inner diameter dial gauges (see Aperture Measurement).

If a lever is used instead of a rack, it can be made into a lever dial gauge. They are suitable for measuring shape and position errors in outer circles, small holes, and grooves, which are difficult to measure with ordinary dial indicators.

There are several kinds of dial gauges: longitudinal (T), horizontal (Y), and vertical (S), and it is necessary to choose the appropriate type according to the use of the application.

1) Longitudinal (T): If the scale is viewed head-on, the probe is moved forward and backward. (2) Horizontal (Y): If the scale is viewed head-on, the probe moves left and right.

3) Vertical (S): The longitudinal scale is mounted vertically relative to the probe.

When reading, first take the end face of the differential cylinder as the standard, read out the graduation value of the scale mark under the fixed sleeve (only read the integer in millimeters), and then take the horizontal horizontal line on the fixed sleeve as the reading guideline, read out the index value on the movable scale, and the reading should be estimated to read to one-tenth of the minimum scale, that is, 0 001 mm. If there is no upper tick mark between the end face of the differential cylinder and the lower tick mark of the fixed scale, the measurement result is the value of the lower tick mark plus the value of the movable scale; If there is an upper scale mark between the end face of the differential cylinder and the lower scale mark, the measurement result should be the value of the lower scale plus 0 5 mm, plus the value of the movable scale, the movable scale of some micrometers is divided into 100 equal parts, the pitch is 1 mm, and the fixed scale does not need half a millimeter scale, and each equal part of the movable scale still represents 0 01 mm. Some micrometers have a movable scale of 50 equal parts, while there is no half-millimeter scale on the fixed scale, which can only be estimated by eye.

For the micrometer with zero error eliminated, when the front end face of the differential cylinder is exactly in the middle of the two lines of the scale mark under the fixed scale, if the reading of the movable scale is between 40 50, the leading edge of the forest wheel does not exceed 0 5 mm, and the reading of the fixed scale does not need to be added 0 5 mm; If the reading on the movable scale is between 0 10, then its front end is more than half of the two adjacent tick marks on the lower scale, and 0 5 mm should be added to the fixed number of ticks.

Determination of zero error of the outer diameter micrometer.

After calibrating the micrometer, when the micrometer screw is in contact with the anvil, the zero line on the movable scale should be aligned with the horizontal horizontal line on the fixed scale. If there is no alignment, there will be a systematic error when measuring – zero error. If zero errors cannot be eliminated, their impact on the reading should be considered.

If the zero line of the movable scale is above the horizontal horizontal line, and the xth scale line is aligned with the horizontal line, it means that the reading at the time of measurement is x 100 mm smaller than the true value, and this zero error is called negative zero error; If the zero line of the movable scale is below the horizontal horizontal line, and the yth scale line is aligned with the horizontal line, it means that the reading of the royal union is 100 mm greater than the true value at the time of measurement, and this zero error is called positive zero error.

For micrometers with zero error, the measurement should be equal to the reading minus the zero error, i.e., the length of the object = fixed scale reading + movable scale reading This split letter has zero error.

A dial gauge used to measure the outer diameter.

Dial gauge: A table-style universal length measuring tool made of a precision rack and pinion mechanism. It usually consists of a probe, a measuring rod, a shock-absorbing spring, a rack, a gear, a hairspring, a round dial and a pointer. How to use:

Insert the dial gauge into the shaft hole of the gauge frame, compress it for one turn (not for two turns), and lock it with a locking device.

Depending on the nominal dimensions of the part to be measured, an interchangeable probe is selected and fixed to the body.

Determine the interchangeable probe and set the zero position of the dial indicator for the inner diameter. When the interchangeable probe is determined, the part to be measured.

The nominal size is optimally set when the active probe compresses about half a turn of the effective stroke.

When measuring, insert the dial gauge into the hole to be measured, and swing forward and backward along the axis to find out the minimum size of the axial plane (i.e., the inner diameter of 100.

The maximum indication point of the sub-table), clear is the number of times the actual size of the hole deviates from the nominal size.

When measuring the workpiece, it should be measured at room temperature, and the temperature of the workpiece is too high to measure.

In use, it should be handled with care to avoid collision between the guide device, the measuring surface and the sharp object.

After use, wipe it clean and cool dry, apply anti-rust oil to the measuring surface and fit, and put it in the box.