SU744223A1 - Apparatus for measuring linear dimensions - Google Patents

Description

one

The invention relates to a measurement technique, and, in particular, to devices for measuring linear dimensions, and can be used to measure the width of grinding with a harmful nlice and gear grinding 5 baths.

A device for measuring linear dimensions is known, which includes the diaphragm and rotates, the sweep drums are 1. U

The device cannot be used to measure grinding width.

The closest technical solution to the invention is a device 15 for measured linear dimensions, comprising a housing, successively installed receiving and optics systems, a photocell sensor and a measurement results summation unit 2 in the cornus. 20

The device makes it possible to measure the linear dimensions of an object but the number of claimed photo sensors located across the movement of the object being measured.

A disadvantage of the known device is that, as applied to grinding, in conditions of intensive micro-formation, it is poorly nomehkorizhennym and has a low accuracy with complex grinding surface .30

The aim of the invention is to improve the accuracy of the measured noise immunity.

The target is indicated by the fact that the box is located at an angle to the axis of rotation of the grinding wheel, and the device is equipped with additional photo sensors, located in several rows in the form of a matrix converter, which controls the keys, the number of which is equal to the number of photo sensors and the logical cells I, the number of which is equal to the number of columns of the matrix, the rows of photocells in the matrix are displaced relative to each other in accordance with the irotation of the profile of the grinding wheel to the plane of the matrix, in each column of the matrix the outputs of all f todatchikov connected via control keys corresponding to the inputs chey-. And, and the outputs of the cells And are connected to the inputs of the unit with the grinding, as well as each And performed with a weight

  / o-sin (-a).

FIG. 1 shows a diagram of the relative position of the product of the grinding wheel on the device for measuring linear dimensions; FIG. 2 is a diagram of the proposed device; in fig. 3 - instantaneous pinch of the contact of the grinding wheel and pdzdeli, diagram.

The product 1 is in contact with the grinding wheel 2 and some elementary areas (lines bj), the total instantaneous width of which is measured by the device and is equal to 2 &

The device for measuring linear dimensions contains a lens 3, a diaphragm optical system 4 (or a fiber-optic unit) and a matrix converter 5 located in the housing 6, as well as control keys 7 with logic cells 8 And, weight regulators 9 (calibration resistance) and block 10 summation.

The matrix converter 5 consists of individual cells 11, each row of which is offset relative to the other in accordance with the profile and size of the grinding wheel 2, as well as the relative position of the measuring device. E) The excess of the A / B offset is determined by the condition that, given the dimensions of the cell and variations in the size of the grinding wheel 2 (wear), each point of the working surface and the top of the circle in its movement intersected all the chips of the given column. FIG. 1 shows the trajectories 12 of the motion of the points of the surface of the circle 2 passing through all the columns of the stack and the trajectories of 13 luminous particles separated from the circle n and not intersecting all the cells of the columns.

The housing 6 is located at a certain angle φ to the axis of rotation of the circle 2.

The device works as follows.

When tuning the device to a particular workpiece 1, the magnitude of the calibration impedances is selected for each column of the matrix, provided that

./(:- / o-Sin (p-),

where RO is the weight of the cell, which is a co-element in the value of the cell for a section of the cutting edge of a circle parallel to the axis of rotation;

and - the angle between the axis of rotation of the circle and the elementary cutting edge.

During the alignment of the illuminated points and the circle 2, the image is projected by an optical system 4 and a matrix photoelectric converter 5.

Each illuminated cell also acts on the input of the key 7 connected to it and opens it. When signals are combined between cells located on trajectory 12, the corresponding cell 8 opens. Block 10 will read all open cells 8 based on weight. Sparks (interference) may not fly along a curvilinear trajectory, so that they simultaneously illuminate the cells of the column and thereby falsely trigger the clock of the given column. By virtue of the curvilinearity of the surface being machined, the sections of the product of the same width are located

four

at different angles to the axis of rotation of the circle 2 and projected onto the matrix converter 5 in the vnde segments of various widths.

The weight regulator 9 of this cell, which is connected to a defined part of the matrix photoelectric converter 5, onto which the image of the grinding wheel 2 is rotated, compensates for the measurement error caused by the curvilinearity of the surface to be processed.

Thus, the invention does not allow to increase the measurement accuracy and eliminate the effect of interference. When using the device in the systems of automatic control of the parameters of the grinding process, it is possible to increase the processing efficiency due to more complete use of the machining time in processing modes that are close to fine.

Форм} л а and 3 o b r e e and u

Claims (2)

1. A device for measuring linear dimensions, comprising a housing, a receiving optical system and a stack of photosensors installed in the housing, and a unit for summing up measurement results, characterized in that, in order to improve measurement accuracy and noise resistance, the housing is angled to the angle of rotation of the grinding wheel, and the device is equipped with a series of photo sensors located in sand rows in the form of a matrix converter, control keys, the number of which is the number of photo sensors The number of columns equal to the number of columns of the matrix, the row of photosensors in the blend matrix .1, each of each other, in accordance with the design of the macrophilic circle and the plane of the matrix, in each column of the matrix, the outputs of all photosensors are connected through the control keys with the inputs of the corresponding AND cell, and the outputs of the AND cells with the inputs of the summation block. 2. The device according to claim 1, characterized by what's each cell so with weight vR; ---; / „sin (tF -), where 0 is the cell weight for the section corresponding to the cutting edge of the circle, parallel to the axis of its rotation; a is the angle between the axis of rotation of the circle and elementary; rezhun1, her edge; F is the angle of rotation of the device relative to the small circle rotation. Sources of information Irii tye in view at examination 1. Author's certificate of the USSR 200169, cl. G 01 B 7/02, 1967. 2. Authors certificate of the USSR L1 349777, cl. D 06 and 3/08, 1972. Vkrugo Shch, P,