SU1328128A1 - Apparatus for working articles - Google Patents

Abstract

The invention relates to the field of welding, mainly to laser processing devices. The aim of the invention is to improve the quality by stabilizing the position of the tool when processing products with a laser beam. With simultaneous rotation of the table 2 and the reciprocating movement of the copier 6, the carriage 11 simultaneously participates in two movements — radial and rotational. The plates 19 to be processed are scanned by a focused laser beam along a spiral path. The immobility of the optical system during processing allows for highly accurate alignment of optical elements. 2 Il. / About

Description

The invention relates to welding, mainly to laser processing devices.

The purpose of the invention is to improve the quality by stabilizing the position of the tool when processing products with a laser beam.

FIG. 1 shows a device for processing, a general view; 2 shows a drive for radial movement of the carriages.

The processing device comprises a product processing tool mounted on the base, for example, an optical system 1, at the output of which a laser beam is perpendicular to the plane of the table 2, with a rotational drive comprising a gearbox 3 and a motor 4 connected to the stabilized power supply unit 5. Copier 6 is kinematically connected with a linear displacement drive comprising a motor 7, a gearbox 8 and a micrometer screw 9 with a lever 10. Radially movable carriages 11 located in radial directions 12 are matched by a bearing 13 with a copier 6 located in the opening 14 of the table 2, and by means of springs 15 - with stops 16. Microswitches 17 and 18 provide communication between power supply unit 5 and motors 4 and 7. Copier 6

 made conical with angle oi to create a spiral path of the beam

when scanning. In general, the shape of the copier can be arbitrary, depending on the path of processing products. .

The device for processing products works as follows.

The laser beam by the optical system 1 is directed normally to the surface of the machined 1x plates 19 located on the radially movable carriages 11. The radius r of the machining is constant, since the optical system 1 is stationary. The carriage is rotated together with the table 2. The table is rotated by the engine 4 by means of the gear 3. The radial movement of the carriages 11 in the radial guides 12 is slow when the copier 6, which is located coaxially with the hole 14 of the table 2, moves along the Z coordinate and therefore all carriages perform radial motion synchronously with the same speed. Interaction of carriages It with copier 6

is carried out by means of springs 15 of bearings 13 and stops 16. The copier 6 is moved by means of a micrometer screw 9, a motor 7 and a gearbox 8. A lever 10 mounted on a micrometer screw 9, when interacting with a microswitch 17, switches the engine 7 to return the treated plates to initial position after the end of treatment. End microswitch 18 provides off engines 4 and 7.

Thus, all radially movable carriages 11 participate in two movements, radial and rotational, and therefore the processed plates 19 are scanned with a focused laser beam along a spiral trajectory with a tangential G and radial G overlap of the laser spots.

Radial overlap G, ----- QCO

for a given laser beam diameter d and copier angle oi to the z axis, it is determined by the rotation frequency ω and the linear motion speed of the copier Vj. Tangential overlap

CGSO.

df.

for a given beam diameter d, the laser pulse repetition rate f and a constant machining radius g is set by the frequency of rotation of the table with. Therefore, the laser processing uniformity is determined by the stability of the rotational speed of the table, which is determined by the stability of the rotational speed of the engine 4, and the stability of the linear motion speed of the copier 6, which is determined by the stability of the rotational speed of the engine 7.

Claims (1)

Invention Formula An apparatus for treating products containing an instrument for treating products, a table with working positions, a drive for rotating the table and a copier, characterized in that, in order to improve quality by stabilizing the position of the instrument when processing products with a laser beam, the tool for machining mounted on the base stationary, a hole is made along the axis of the table, and the table is made with radial guides and stops at each working position; in the radial guides of the table are installed with the ability to interact with the copier carriage for products, spring-loaded relative to the stops, while the copier is placed in the hole table with the possibility of reciprocating movement along its axis. Editor S. Pekar Compiled by E. Kryukova Tehred L. Serdyukova Proofreader A. Obruchar Order 3433/16 Circulation 974 Subscription VNIIZh USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, 4.