servo upside down special machine What are the use and maintenance of measuring tool vernier calipers? servo upside down special machine There are many measuring tools, and play different roles, today we will give a detailed explanation on the use and use of servo upside down special machine measuring vernier calipers.

1. Vernier calipers

Before use, the dust and oil on the surface of the measuring claw and the workpiece to be measured should be wiped clean first, so as not to hurt the vernier caliper measuring claw and affect the measurement accuracy, and check the interaction of various components, such as whether the ruler frame and the micro device move flexibly, and whether the fastening screw can work.

Check the zero position of the vernier caliper, so that the two measuring claws of the vernier caliper are closely fitted, and there should be no obvious light gap when observed with the eyes.

When used, it is necessary to grasp the pressure when the measuring claw surface is in contact with the workpiece surface, which is neither too large nor too small, just so that the measuring surface is in contact with the workpiece, and the measuring claw can also slide freely along the workpiece surface; A vernier caliper with a micro device should use a micro device.

When reading the vernier caliper, the vernier caliper should be held horizontally in the direction of the force toward the light, so that the line of sight is as vertical as possible and the engraving line read on the main and secondary ruler, so as to avoid reading errors due to the skewness of the line of sight.

When measuring the external size, after reading, do not pull down the vernier caliper from the workpiece to be measured, otherwise it will make the measurement of the claw

Face wear and cause reading errors.

Moving workpieces cannot be measured with vernier calipers.

Do not use vernier calipers instead of calipers to drag back and forth on the workpiece, and do not use vernier calipers as tools.

The vernier caliper should not be placed near a strong magnetic field (such as the magnetic work table of the grinder), so as not to make the vernier caliper feel magnetic, affecting the use of.

During use, it is strictly prohibited to press other items on the vernier caliper.

After use, attention should be paid to making the vernier caliper flat, especially the large size vernier caliper, otherwise the main ruler will bend and deform.

After use, check whether the caliper is complete, clean up, apply anti-rust oil, should be placed in a special box.

2. Depth vernier calipers

When measuring, the measuring surface of the ruler frame is first attached to the top surface of the workpiece being measured, and be careful not to tilt, and then the ruler body is pushed up until the measurement of the ruler body is in contact with the measured part, at which time the reading can be done.

Because the measuring surface of the ruler body is small and easy to wear, it is necessary to check whether the zero position of the depth ruler is correct before measurement.

Depth vernier calipers generally do not have a micro device, such as the use of a micro device with a depth ruler, it is necessary to pay attention to not excessive contact, resulting in measurement errors.

Since the measuring surface of the ruler frame is relatively large, the measuring surface should be clean and free of oil and dust when in use. And remove the effects of burrs, rust and other defects.

During use, it is strictly prohibited to press other items on the depth vernier.

After use. Check for completeness. After cleaning and applying anti-rust oil, it should be placed in a special box.

3. Height vernier caliper

When measuring the height size, first attach the base of the height ruler to the plate, move the marking claw of the ruler frame to make its end contact with the plate, and check whether the zero position of the height ruler is correct.

When moving the height vernier caliper, the base should be held, and the ruler body should not be held, otherwise it is easy to make the height vernier caliper fall or the ruler body deformation.

After use, check whether the caliper is complete, clean up, apply anti-rust oil, should be placed in a special box.

4. Tooth thickness vernier caliper

Before use, check whether the zero position and the role of each part are accurate and flexible and reliable.

When used, the theoretical value of the tooth height is calculated according to the formula of the tooth height of the fixed string or the dividing circle string, and the reading of the vertical master ruler is adjusted so that the end face of the height ruler is gently contacted with the tooth top circle of the gear in the vertical direction. When measuring the thickness of the tooth, attention should be paid to making the active claw and the fixed claw contact the tooth surface in the vertical direction, and the reading should be carried out after there is no gap, and the measurement pressure should not be too large, so as not to affect the measurement accuracy.

When measuring, a tooth can be measured on the gear ring every 120°, and the maximum deviation is taken as the actual tooth thickness of the gear. The difference between the actual tooth thickness measured and the theoretical value calculated according to the tooth thickness formula of the fixed chord or the dividing circle chord is the tooth thickness deviation.

After use, check whether the caliper is complete, clean up, apply anti-rust oil, should be placed in a special box.

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