SU832439A1 - Flaw detector - Google Patents

Description

(54) DEFECTOR

one

The invention relates to non-destructive testing, is intended for marking with automatic control and can be used in any branch of engineering.

A defect marker is known, which contains a cutting tool and a mechanism for leading the cutting tool to the surface of a controlled product, designed as a pneumatic cylinder with a hollow brush, in which a finger is rigidly fixed and a spring-loaded slider with a helical groove mounted in the stem so that the finger of the rod fits into the helical groove slider, the movement of which the tool puts at risk in the form of a groove 1.

A disadvantage of this device is that when a label is applied to a controlled product, risks remain on its surface that are not acceptable on thin-walled products.

The closest to the invention in terms of technical dryness is a flaw detector, comprising a housing, an axially spring-loaded slider with a holder for a pencil disposed thereon.

and a compression spring and a drive for moving the slider 2.

A disadvantage of the known defect tester is that the contact surface of a glass carburet with a controlled product changes due to wear, and depending on this, the geometric shape of the mark and the quality of its marking change, resulting in difficulties in determining the exact location of the defect and its dimensions.

0 The purpose of the invention is to ensure reliable labeling.

The goal is achieved by the fact that the defect tester is provided with a cam coaxially fixed on the slider and spring-loaded relative to the housing.

5 finger and corrugated sleeve, the slider is made with a longitudinal groove through which the finger interacts with the cam, the holder is pivotally fixed to the cam, and between the hinge

. and the holder fixed the corrugated sleeve.

In addition, the defect tester is equipped with a roller mounted between the compression spring and a pencil, as well as a cam

made in the form of a cylinder with a zigzag groove of variable depth on the outer surface. FIG. 1 shows the defect meter; general view; in fig. 2 - development of a cylindrical cam with a screw groove.

The defect locator comprises a housing 1, a slider 3 spring-loaded 2 axially mounted on it with a holder 4 for a glass-fiber pencil 5 and a pressure spring 6 and a slider 3 driving actuator 7, on which is fixed a cam 8 aligned with a zigzag cylinder groove 9 variable depth on the surface. The slider 3 is made with a longitudinal groove 10, through which the finger 11 passes, interacting with the cam 8 and the spring 12, which is spring-loaded along its own. her axis.

The holder 4 by the hinge 13 is fixed on the cam 8, a corrugated sleeve 14 is fixed between the hinge 13 and the holder 4, and a roller 15 is installed between the compression spring 6 and: pencil 5. The flapper is installed near the surface of the product 16.

The defect meter works as follows.

At the time of detection of the defect, the actuator 7 moves downward relative to the housing 1 of the slider 3, compressing the spring 2. Together with the slider, the cam 8, fixed in it against axial displacement, and the holder 4 with a glass fiber pencil 5, come into motion.

Steklografichesky pencil 5, pressed against the product 16 through the roller 15 pressure spring 6, puts its side surface mark.

When the cam 8 moves downwards, the finger And interacts with its zigzag groove 9, which has a smoothly variable depth, thanks, difference in depths, the finger enters the connecting turn of the groove and, interacting with it as the cam moves up, turns the latter along with a pencil.

The depth of the sloping part of the groove is less than the initial depth of its longitudinal part, but greater than its final depth, due to which the finger moves from one groove to another.

The defect meter makes it possible to use it in the automatic control device by constantly turning and

putting a mark on the side, a pencil evenly wears out and its wear does not affect the quality of the mark.

The device ensures the preservation of the purity of distilled water, in which automatic control is carried out.

products. The life span of the defect tester is increased, the time to search for the location of the defect is reduced.

Claims (3)

1. A defect meter, comprising a housing, an axially spring-loaded slider on it with a pencil holder and a compression spring, and the drive for moving the slider, characterized in that, in order to ensure the reliability of the marking, it is provided with a fixedly fixed on the slider a cam aligned with it, a finger spring-loaded relative to the body and a corrugated sleeve, the slider is made with a longitudinal groove through which the finger interacting with cam, the holder is hinged to the cam, and between the hinge and the holder is fixed a corrugated handle. 2. The defect tester according to claim 1, characterized in that, in order to ensure the application of a mark on the product with a constant force, it is provided with a roller mounted between the compression spring and the pencil. five 3. The defect tester according to claim 1, characterized in that the cam is made in the form of a cylinder with a zigzag groove of variable depth on the outer surface. 0Sources of information - taken into account during the examination 1. Author's testimony of the USSR No. 229014, cl. G 01 N 19/08, 1966. 2. USSR author's certificate No. 485366, cl. G 01 N 19/08, 1972 (prototype).