SU1726176A1 - Method of locating a ring-shaped object - Google Patents

Abstract

Use: for automation of technological processes of automatic arc welding. SUMMARY OF THE INVENTION: The measurement of the position is made by a probe made in the form of a parallelepiped of rectangular cross section in the measurement plane, the sides of which are oriented perpendicular to the direction of search movement, the dimensions of the sides of the cross section of the probe are not less than the value of the permissible deviations of the object coordinates. 1 il.

Description

The invention relates to the automation of technological processes of automatic arc welding.

The aim of the invention is to increase productivity by reducing the search coordinate movements of the probe,

The goal is achieved by the fact that in the method of determining the position of an object of a ring shape, in which search movements of the probe are performed and the sign and magnitude of the object deviation from the predetermined position are measured at the moments of its contact with the object, the maximum allowable deviation of the object from the predetermined position mutually perpendicular directions of movement of the probe lying in one plane, the probe is made in the form of a parallelepiped of rectangular cross section in the plane of measurement, the sides of which orient the perpendicular pendicular to the direction of the search movement, while the dimensions of the sides of the cross section

choose equal to or greater than the maximum permissible deviation of the object and orient them along each coordinate perpendicular to the direction of the search movement.

Using the proposed method provides an increase in the productivity of the process of determining the position of ring shaped objects. The basis is a reduction in the number of search coordinate movements of the probe, made in the form of a parallelepiped. Measuring the position of an object of circular shape with a stylus made in the form of a parallelepiped makes it possible to determine the position of the specified object with the help of only two search coordinate movements of the probe, and this results in an increase in productivity.

The drawing shows the probe position relative to a ring-shaped object when performing search movements along the two axes of the X and Y coordinates.

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Probe 1 is made in the form of a parallelepiped of rectangular cross section in the measurement plane. The sides of the parallelepiped are oriented perpendicular to the direction of the search movement, while the dimensions of the sides of the section are chosen to be equal to or greater than the maximum permissible deviation of the object and orient them along each coordinate perpendicular to the direction of the search movement.

The probe 1 has the dimensions of the faces I and m and is fixed with the possibility of movement relative to the object 2 of annular shape. The actual coordinate position (indicated by a dashed line) of object 2 differs from the given one (indicated by a solid line) in the direction of the coordinates of the search movements by the value LH and AY. Based on the specified tolerance values, choose the size of the faces of the probe I. Ј DH and m D Y.

A stylus 1, made in the form of a parallelepiped, is moved from its initial position (indicated by a dashed rectangular line) in the direction of the desired object 2, first along the X coordinate, the reference point of the corresponding face of the probe 1 perpendicular to the X axis. At the moment of touching the face of the probe 1 and the object 2 measures the actual position (the sign and magnitude of the deviation) of the object 2 relative to a given one. Then, from the new initial position (indicated by a solid rectangular line), probe 1 is moved in the direction of the target object along another search coordinate Y, orienting another face of probe 1 perpendicular to the direction of this movement, and also when the probe 1 touches perpendicular to the direction of this movement , and also at the moment of touching the probe 1 and the object 2, the sign and the deviation of the last

from a given position along the Y coordinate. If the relationships I i A X X and m are not satisfied. Y Y, then the contact of the corresponding faces of the probe 1 with the contour of the object 2 will occur

at a point not lying on the Xi and YI axes, respectively, perpendicular to the position of the grain I and m, which will lead to errors in measuring the position of the object 2.

Thus, to determine the actual position of an object of a circular shape according to the proposed method, two search coordinate displacements are sufficient, rather than three, as in the known methods. Reducing the number of search displacements of the probe improves the performance of the process of determining the position of the object,

Formula of invention

The method of determining the position of a ring-shaped object in which search probes are carried out and, at the moments of its contact with an object, is measured the sign and size of the object’s deviation from a predetermined position, characterized in that, in order to increase productivity by reducing the search coordinate movements of the probe, the maximum allowable deviation of an object from a given position in two mutually perpendicular directions of movement of the probe lying in the same plane, the probe is in the form of a parallelepiped p rectangular cross section

measurement planes, the sides of which are oriented perpendicular to the direction of the search movement, while the dimensions of the sides of the section are chosen to be equal to or greater than the maximum allowed

my object deviation and orient them in each coordinate perpendicular to the direction of the search movement.

AND

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Claims (1)

Claim A method for determining the position of an object of a circular shape, in which search probe movements are performed, and at the moments of its contact with the object, the sign and the deviation of the object from a given position are measured, characterized in that, in order to increase productivity by reducing the search coordinate movements of the probe, the maximum permissible deviation is determined object from a given position in two mutually perpendicular directions of the probe moving, lying in the same plane, the probe is made in the form of a parallelepiped coal section in the measurement plane, the sides of which are oriented perpendicular to the direction of the search displacement, while the dimensions of the sides of the section are chosen equal to or greater than the maximum permissible deviation of the object and they are oriented along each coordinate perpendicular to the direction of the search displacement.