SU594405A1 - Coordinate scale - Google Patents

Description

one

The invention relates to contactless optical devices for measuring the length in space by geodetic methods.

Non-contact optical devices for measuring the length in space are known, which contain pivotally mounted optical systems, telescopes and linear scales 1.

The disadvantages of these devices are low measurement accuracy and low productivity when measuring arbitrary orientation lines due to the need to measure a large number of parameters necessary to determine the total length.

The closest in technical essence and the achieved result to the proposed is a device comprising a housing, a horizontal and vertical limbs, a linear scale, an optical system, a rotatably mounted telescope and an autocollimator 12.

However, this device has limited performance and low accuracy, since the measurements use a linear scale and two goniometers, each of which introduces errors to the measurements.

The purpose of the invention is to increase productivity and measurement accuracy. This goal is achieved by the fact that the coordinator, comprising a housing, a rotary column with an installation rotation mechanism and a linear scale located along the ocif column, a rotary telescope rigidly connected with a vertical limb, the axis of which is perpendicular to the scale plane of the scale, the optical image transmission system in the field of the operator, autocollimator and mirror, equipped with a mechanism for the installation of the inclination of the telescope with a carriage and limb around one of the horizontal axes located under the installation mechanism th column of rotation, and a mirror collimator are rigidly fixed to the top of the column and placed perpendicularly to the axes of movement of the carriage and the autocollimator which is fixedly coupled to the telescope housing.

Claims (2)

FIG. 1 schematically shows the proposed coordinate meter; in fig. 2 principle of measurement of slant range. The coordinate meter contains a rotary plateau 1 with a telescope that has the following optical units: lens 2 mirrors 3 and 4, focusing lens 5, grid 6 and ocular p 7, Rotary plateau with a telescope connected with gear 8 and handle 9 with vertical gear limb 10 having a counting microscope 11. The plate of the autocollimator 12 is fixed to the plateau 1. The optical axis of the autocollimator is parallel to the stroke of the carriage 13. The viewing tube with the limb 10 moves with the carriage 13 along column 14 by the length of the linear scale. The carriage 13 with the column 14 can be tilted by an angle o (90 ° from the vertical around ONE of the horizontal axes, for example around the YY axis, and rotated with the angle φ around the vertical axis 2-2 or the tilting axis of the device Zz. angle: columns 14 is carried out using gear 15 and 16, handle 17. All the carriages 13 on the column 14 are balanced by a counterweight 18. At the end of the column 14, a mirror 19 is rigidly fixed, perpendicular to the axis of movement of the carriage 13 and the autocollimator axis 12 The column 14 is inclined at an angle c by the axes 20, fastened in under the pinnacles 21. Inside the column 14 a linear scale 22 is mounted, mounted on a swivel bearing 23. The readout on a scale 22 is taken using a reading microscope 24. The adjusting turn of the column 14 at an angle if with a scale of 22 is carried out by a handle 25 through a gear transmission The x-axis of rotation of the dial 10 intersects the axis of rotation of the column 14. The autocollimator 12 shows the angle of inclination of the plateau 1 with the telescope relative to the axis ZZ or zz when the carriage 13 moves by an amount along the column. The image of the autocollimator mesh reflected from the mirror 19 is observed in the field of the autocollimator. With the combined position of the stationary bisector of the autocollimator grid and the autolimeter autocollimation bar image, the axis of the telescope is perpendicular to the axis of movement of the carriage 13 along the column 14. The proposed coordinate meter allows for one installation using only one limb and a linear scale for MO or indirectly measure the length of the inclined segments in space, significantly greater than the length of the scale of the coordinate meter, the length of the inclined section JB prosla-tion (see Fig. 2) when measured by its proposed coordinator op Yedelev a from the dependence fsine 2bine s ejcos (, - e,) 2., g2 I q. t) sincej + ti bwC i ei) where t is the base length of the coordinate meter; readings on the vertical limb in the plane of measurement. . Measurement of sloping segments in space is made as follows. The column 14 with the telescope and the carriage 13 is tilted with a handle 17 at an angle ot to align the axis of sight of the pipe with the measurement line passing through points A and B of the measured segment. To do this, the column 14 is turned at an angle of f with a handle 25 and the column is inclined at an angle oL, the pipe is turned at angles e, 2, E3,. when sighting at points A and B as long as the plane formed by the axis of divisions of the scale f and the axis of sight of the pipe coincides with the line AB forming the measured segment K, With the two extreme positions of the pipe at points O and O on the column is sighted at points A and B, and two angles are measured, and, E and C., with a goniometer, having previously set the autocollimation image of the grid on the autocollimator 12 and the mirror 19. Substituting the values of the measured values into a generalized formula, I 2 3 4 g determine the length of the inclined segment in space, in the horizontal or vertical planes. The proposed coordinate meter will find wide applications in shipbuilding, aeronautical engineering, radio engineering, mechanical engineering, and other industries for non-contact measurement of products of great length and weight. Invention. A coordinate measuring instrument comprising a housing, a rotary column with an installation rotation mechanism and a linear scale located along the axis of the column, a rotary telescope rigidly connected with a vertical limb, the axis of which is perpendicular to the scale division plane, an optical image transmission system in the operator field, an autocollimator and a mirror, characterized in that, in order to improve the accuracy and performance of measurements, it is equipped with a mounting tilt of the telescope with a carriage and limb around one of the mountains zonal axes placed under the mechanism of the installation rotation of the column, and the collimator mirror is rigidly mounted on the top of the column and mounted perpendicular to the axes of movement of the carriage and the autocollimator, which is fixedly connected with the telescope case. Sources of information taken into account in the examination: 1, Grame I, A. Optical range finders and altimeter geometric type. M., Nedra, 1971, pp. 15-30. 2. USSR author's certificate No. 370457, cl. О- 01 В 11/02, 1970.