SU1684593A1 - Apparatus for orient the object - Google Patents

Abstract

The invention relates to optoelectronic measurements and can be used to orient objects during processing. The aim of the invention is to improve the reliability and accuracy of the orientation of objects. The device comprises a laser 1 for processing, a system of sequential diffraction gratings 2 and 4, an orientation setting unit 3 mechanically bonded to the first diffraction grating 2, and a rotation unit 5 mechanically bonded to the second diffraction grating 4. In the zero diffraction order the laser beam 1 set the object to be processed 12, in front of which the interrupter 8 is placed. The object 12 is bonded to the second diffraction grating 4 by the rod 11 so that the angular turns of the diffraction grating and, set by the rotation unit 5, and the object 12 are synchronized. The photodetectors 6 are located on the strip 7 and rotate synchronously with the first diffraction grating 2. At the time when electrical voltages appear at their outputs, the adder 9 generates commands to open the interrupter for a certain time and to stop the rotation of the second diffraction grating 4. The body 8 returns to its initial state the control unit 10 generates the following command. 1 il. (L with

Description

The invention relates to optoelectronic meters and can be used to orient objects in the process.

The aim of the invention is to increase the reliability and accuracy of orientation of objects.

The drawing shows a structural diagram of a device for orienting an object.

The device consists of a laser 1 and located in the radiation flux sequentially of the first diffraction grating 2, mechanically connected to the orientation setting unit 3, the second diffraction grating 4, mechanically connected to the rotation unit 5, photodetectors 6 mounted on the bar 7, attached to the orientation setting unit 3 , a chopper 8, connected by an input to the second output of the adder 9, whose inputs are connected to the photodetectors 6, and the first output is connected to the first input of the rotation unit 5, connected by the second input to the output of the rear unit orientation, the control unit 10 connected by the input to the output of the chopper 8, the rod 11, fastening the object 12 and the second diffraction grating 4.

The device operates as follows.

Laser radiation 1 is directed to the system from the mirror diffraction gratings 2 and 4 sequentially arranged in the direction of the radiation flux. Photodetectors 6 are located in the beams reflected from the second diffraction grating, the number of which is determined by the number of diffraction orders used. In this case, the distance L between the diffraction gratings is selected depending on the diameter of the grating D and the diffraction angle a, based on the relation

L <D / 2tga.

An object 12 is mounted on the path of the beam with a zero diffraction order, and a chopper 8 is installed in front of the object mechanically connected with the second diffraction grating 4 by the rod 11. The orientation angle of the object 12 is set using the control unit 10, by the command of which the orientation setting unit 3 rotates around its axis, the first diffraction grating 2 and the bar 7 with photodetectors installed on it 6. At the same time, upon a command from the orientation setting unit 3, the rotation unit 5 rotates around its axis the second diffraction grating 4 It is natural with object 12. At the moment when electrical signals appear at the outputs of all photodetectors 6, the adder 9 generates two control commands, one of which stops the second diffraction grating 4 from rotating, and the other one interrupts 8 for a specified time, providing irradiation of the object 12 . At the time of the return of the chopper 8 to its original position, the control unit 10 generates the next command to turn the first diffraction grating 2.

Claims (1)

Claim A device for orienting an object containing a laser, a first diffraction grating and two photodetectors, characterized in that, in order to increase the reliability and accuracy of orientation, it is equipped with a second diffraction grating with a rod and a rotation unit, optically coupled to the first and installed behind it along the beam , both gratings are made reflective, a bar and a system of at least two photodetectors fastened with it, a radiation flux chopper installed along the beam behind the second diffraction grating, a control unit and bl com orientation, the input of which is connected to the output of the control unit, the input of which is connected to the output of the chopper, an adder, the inputs of which are connected to the outputs of the photodetectors, the first output of the adder is connected to the first input of the rotation unit, the second output of the adder is connected to the input of the radiation flux chopper, the second input the rotation unit is connected to the output of the orientation setting unit mechanically bonded to the first diffraction grating, the rod is designed to be attached to the object, and the distance L between the diffraction gratings is chosen shouting from a ratio. L <D / 2 tga, where D is the diameter of the grating; a - diffraction angle.