Brief introduction of tool microscope, measuring object and measuring method

The tool microscope is used as an advanced metallographic microscope. It is divided into large tool microscopes and small working microscopes, which are used for measurement. There are four commonly used measurement methods, which are rectangular coordinate measurement, angle measurement, height measurement and aperture measurement.

1. Large tool microscope.

Its rotary table is assembled, also made of precision cross-shaped moving table and observation microscope. The penetrating lighting equipment uses centrifugal lighting. The pillar and the table are integrated and can be tilted left and right. The thread measurement is very convenient. The eye observation section is equipped with a projection device, which can be used to observe the projected image.

2. Small tool microscope.

It is composed of a precision cross mobile workbench and an observation microscope. It is a small tool microscope. It is designed to be easy to use, so the pillar will not tilt, and the lighting equipment is also simple. Although it is easy, it is compatible with many accessories. After connection, various measurement tasks can be added.

What is the general method of measurement with a tool microscope?

1. Determination of rectangular coordinates:

The measurement must be carried out when the direction of the rectangular coordinate of the measured object and the moving direction of the cross-shaped table coincide. When measuring in rectangular coordinates, the rectangular coordinate value can be directly read from the movement amount of the cross-moving table. If it is a large tool microscope, the image on the rectangular coordinate measurement of the aiming hole can be accurately measured by connecting the observation eye, and the measured object is at right angles When adjusting the coordinate direction and the cross-moving table, it is very convenient to use the assembled rotary table mounted on the large tool microscope. As for the small tool microscope, only the attachment of the rotary table is sufficient.

2. Angle measurement:

It can be measured using a rotating table or an angle observation lens. Generally speaking, the accuracy of the angle observation lens is better.

3. Height measurement:

Although the small tool microscope cannot measure the height, if the silver is placed on the upper end of the pillar, then the height can be measured by the amount of movement of the microscope up and down. However, due to errors such as the depth of focus, the inclination of the pillar, and the amount of silver and the optical axis, it is quite difficult to measure correctly.

4. Pore size determination:

Generally, it is measured using an angle observation lens, but a large tool microscope can use an overlapping image observation lens or an optical detector, that is, an overlapping image lens is used to overlap the two images generated, and then the opposite side is the same. The amount of movement can show the inner diameter of the hole. If an optical detector is used, first install it on the 3x object lens, then align the movement direction of the detector and the table, and then adjust the overlapping line in the observation lens parallel to the cross line of the observation lens. Instead, the measuring element contacts the hole surface. Finally, use the feed on the Y axis to correct the reverse movement of the overlapping line, and use the X axis to feed the overlapping line between the ten sub-lines of the observation lens, and the measured value on the X axis can be read. The hole on the opposite side is the same, so the difference between the reading and the diameter of the probe can be used to obtain the inner diameter of the hole.

What is the measurement object of the tool microscope?

1. Measure the shape of various shaped parts such as model, model turning tool, model milling cutter, die and cam.

2. Measure the middle diameter, small diameter, pitch, half angle of external thread (thread plug gauge, screw and worm, etc.).

3. Measure the lead, tooth shape and tooth shape angle of the gear hob.

4. Measure the position of the hole on the circuit board, drilling die or orifice plate, the symmetry of the keyway and other shape and position errors.

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