RU178681U1 - ROW SCREW CONTROL DEVICE - Google Patents

Abstract

The utility model relates to the field of measurement technology and can be used when scanning large objects, including ship propellers. The propeller control device consists of a laser scanner and a support structure, which is made in the form of a collapsible turnstile located above the propeller with racks and a crossbar. The racks have vibration isolating supports, and the laser scanner is mounted on the crossbar with the possibility of its movement over the propeller. The technical result consists in increasing the accuracy of measuring the geometry of the propeller. 2 s.p. f-ly, 2 ill.

Description

The utility model relates to the field of measurement technology and can be used when scanning large objects, including ship propellers.

A propeller control device is known that includes a handheld laser scanner (see www.top3dshop.ru). The disadvantage of this device is the inconvenience of scanning large objects, especially when the approach to these objects is limited.

Closest to the claimed utility model in terms of technical nature and the achieved result is a propeller control device including a laser scanner mounted on a holder with the ability to move the scanner in space (see www.3dtool.ru). The disadvantage of this device is the insufficient accuracy of measuring the geometry of large objects with a laser scanner, especially in a production environment. The fact is that under production conditions during the operation of equipment, including metalworking machines, the production areas vibrate, which is transmitted to the holder of the laser scanner. It is especially important to exclude such a vibrational effect when measuring the geometry of the propellers, where it is necessary to determine with a high degree of accuracy the deviation of the finished castings of the propellers before their machining on metalworking machines.

The purpose of this utility model is to increase the accuracy of measuring the geometry of propellers.

This goal is achieved by the fact that in the known device for controlling propellers, including a laser scanner mounted on a holder with the ability to move the scanner in space, the holder is made in the form of a collapsible turnstile located above the propeller, with racks and a crossbar on which the scanner moves while the racks are made with vibration isolating supports. The minimum number of racks is four, and the vibration-isolating support of the rack is made in the form of a metal flange connected to the rack by means of a spring pressed into a rubber-like material. The implementation of the holder in the form of a collapsible turnstile with racks allows you to place the laser scanner directly above the studied propeller mounted on the processing equipment, and thereby ensure scanning of the surface of the propeller at the required angle in terms of accuracy. The presence of vibration-isolating supports in the racks allows to exclude the vibration of the holder - turnstile, which also significantly increases the accuracy of measuring the geometry of the propeller. Experimental studies have shown that the best results for eliminating the vibration of the turnstile racks, the height of which can be three meters or more, are achieved when the supports are made in the form of a metal flange connected to the rack by means of a spring pressed into a rubber-like material. Metal flanges provide reliable stability of the turnstile, and springs pressed into a rubber-like material effectively dampen vibrations in the frequency range that is characteristic of industrial premises.

The proposed device is shown in figures 1, 2. In FIG. 1 shows a general view of the device, and in FIG. 2 - support racks with the following notation:

1 - metalworking machine;

2 - propeller;

3 - racks;

4 - crossbar;

5 - laser scanner;

6 - support racks;

7 - a flange;

8 - spring;

9 - rubber-like material.

The proposed device (see Fig. 1) consists of a turnstile, including the crossbar 4 and four racks 3. On the crossbar 4 there is a laser scanner 5 with the ability to move it over the propeller 2, which is installed on the metalworking machine 1. Machine 1 and propeller 2 shown conditionally. The stands 3 of the turnstile are supported by the supports 6. The supports 6 (see Fig. 2) are made in the form of a metal flange 7 connected to the rack 3 by means of a spring 8, pressed into the rubber-like material 9.

The device operates as follows. A propeller 2 is installed on the metalworking machine 1 and a turnstile is assembled, consisting of a crossbar 4 and four racks 3. A laser scanner 5 is mounted on the crossbar 4 with the possibility of its movement over the propeller 2. At the ends of the racks 3, supports are fixed 6. The laser scanner moves along the crossbar 4 and fixes the geometry of the surface of the propeller 2. At the same time, due to the supports having a reliable anti-vibration design, and the possibility of fixing the surface of the propeller at the desired angle, the required measurement accuracy of surface deviations from the calculated one. In those places where the surface of the propeller has negative deviations, an additional layer of metal is deposited on the surface of the screw.

The device passed an experimental test, which showed its effectiveness and increased accuracy of measuring the propeller geometry.

Claims (3)

1. The control device of the propellers, including a laser scanner mounted on the holder with the ability to move the scanner in space, characterized in that the holder is made in the form of a collapsible turnstile located above the propeller, with racks and a crossbar on which the scanner moves, while the racks made with vibration isolating supports. 2. The propeller control device according to claim 1, characterized in that the minimum number of racks is four. 3. The propeller control device according to claim 1, characterized in that the vibration-isolating support of the strut is made in the form of a metal flange connected to the strut by means of a spring pressed into a rubber-like material.

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