SU1474443A1 - Device for testing surface roughness - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is the expansion of technological capabilities. The device contains a guide with a ruler 1, a movable frame 2 mounted on it, on which the measuring probe 3 is located, and a recording element 4. When measuring, the device is placed on the test surface 9, and the frame 2 is positioned on the guide 1 in its extreme position. When the frame 2 moves along the guide 1, the measuring probe 3 repeats the irregularities of the surface 9, which are registered by the element 4. At the same time, the second measuring probe 5, located on the rocker arm 6 with the possibility of moving along it, also contacts the checked surface 9 and moves along its profile . At the same time, the spring-loaded rocker arm with a ruler 6, one end of which is pivotally connected by the probe 3, and the other interacting with the second recording element 7, is rotated relative to one arm of the probe 3, which is L-shaped. Because the second recording element 7 is fixed on the arm of the probe 3 located parallel to the guide 1, then the movement of the probe 5 will be recorded by the recording element 7. Performing sequential measurements at different distances between the probes 3 and 5 will receive the values of the correlation function estimates. 2 Il.

Description

one

This invention relates to a measurement technique.

The purpose of the invention is the expansion of technological capabilities by providing a definition of unbiased estimates of the correlation function of the surface profile.

Figure 1 presents the diagram of the device; 2 is a section A-A in FIG. one.

The device for controlling the surface roughness contains a guide 1 with a ruler on which the movable frame 2 is installed. On the latter there is a measuring probe 3 and a recording element 4. The second measuring probe 5 is mounted on the rocker arm 6 with the ability to move along it. The rocker 6 is pivotally connected at one end to the first measuring probe 3, and to the other interacts with the second recording element 7, which is fixed on the arm 8, which is made parallel to the guide 1 on the first measuring probe 3.

The device works as follows.

The device is fixed on the test surface 9. The frame 2 is set on the guide 1 to the extreme position. When the frame 2 moves along the guide 1, the measuring probe 3 repeats the irregularities of the surface 9 and the recording element 4 detects the displacement of the probe 3. At the same time as the frame 2 moves, the second measuring probe 5, installed at some distance from the probe 3, is also in contact with painted surface 9

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and moves along its profile. At the same time, the beam 6 is rotated relative to the hinge on the probe 3 and the recording element 7 detects the displacements of the rocker arm 6 relative to the arm 8. Performing consecutive measurements at different distances between the probes 3 and 5, the values of the correlation function estimates are obtained.

Claims (1)

Invention Formula A device for monitoring surface roughness, containing a guide with a ruler, a movable frame mounted on it and a measuring probe mounted on the frame, and a recording element, characterized in that, in order to expand technological capabilities by providing the definition of unbiased estimates of the correlation function of the surface profile, equipped with a second measuring probe, a spring-loaded arm with a ruler. and a second recording element, the first measuring probe is L-shaped, its shoulder is located parallel to the guide and a second recording element is mounted on it, the second measuring probe is located along the normal on the yoke with the possibility of moving along it, the yoke is connected at one end pivotally with the first measuring probe, and the other interacts with the second recording element. Aa