SU377217A1 - MULTI-CUTTING HINGE GAS-CUTTING MACHINE - Google Patents

Description

I

The machine is designed for cutting round parts and blanks, for example, discs, sheet metal flanges using a circulating device without templates, as well as parts of any shape with copying on steel templates.

The proposed gas cutting hinge machine can be used for oxygen cutting of low carbon steel, and when equipped with plasma cutting equipment, for cutting non-ferrous metals and stainless steels and for speed cutting of low carbon steel.

The well-known multi-cutter shashiirny gas-cutting machines, containing a column with hinged frames and a cross-beam, fixed to one of the frames, a drive mechanism and a circulating device, performed in the form of a string connected to the cross-arm and the drive mechanism, do not provide a sufficiently stable cutting speed and have a slushom large gear ratio of the driving mechanism.

In order to reduce the gear ratio of the missing mechanism and increase the stability of the cutting speed, the staging unit of the circulating device is connected with the driving mechanism and the crosspiece by means of two gear pairs, one of

2

which ustaovleya with the possibility of remixing along osm staff.

FIG. 1 shows a multi-cutter and gas cutting machine, general view; in fig. 2-kinematic diagram of the circulator.

The gas-cutting hinge machine contains a column / on which is mounted a yoke 1 with a fastening unit - pattern 3, hinged frames 4 and 5, a driving mechanism 6 with a magnetic coil 7, a multi-cutter S, cutters 9, a pantograph 10, a circulator //, electrical systems - and gazopitani.

 4 and 5 between each other and with the column / are hingedly connected, the driving mechanism is mounted on the frame 4 motionless, the traverse relative to the axis of the column / can be rotated at any angle and stopped at a given position.

Odiorezakov machine does not contain a pantograph and multi-slot prefix.

A COCTOIIT circular device from a drive shaft 12 rigidly connected to gear 13, one of the gear pairs gear 13 mates with gear 14 also fixed on the rod 15 of the circulator, the length of which determines the cut radius; on the opposite end of HiTaiirH on the sliding key; Gear 16 of the second gear pair is installed; gear 16 mates with gear 17, which is rigidly connected to cross member 2. The presence of a sliding key allows axial displacements and fixation of the second gear pair at any place along the length of the head 15, thus achieving a change in the radius of the cut circle. The choice of the type (conic, screw, screw) and transmission parameters is made depending on the characteristics of the lead mechanic | Ma, given cutting speeds, range of cutting diameters. The circulator works the following way. The driving shaft 12, having received rotation from the shaft of the driving mechanism 18, communicates it to the rod 15 through the gear pair 13-14. Together with the shaft 15, the gear 16 rotates, making a planetary motion relative to the sliding bar 17 connected to the crossmember 2. In this case, the link of the circulator ( with the exception of the pinion jaws 17) move in the horizontal plane, and any point of each link describes a circle; the axis of the lie coincides with the axis of the fixed gear 17. The shaft 15 moves along the circumference, along with all the points of the driving mechanism, the hinged frame, the pantograph, which are on the vertical, coinciding with the axis of the shaft 12. Due to this, each cutter also moves in a circle, radius which is determined by the size between the shaft 12 and the brush 17. To perform a single circular cut, the circulator must make a full turn relative to the pinion 17. The speed of the shaft 18 of the driving mechanism will be due to All cut-out hinged frames c. relative to the column and the angle between them changes, the drive shaft rotates by some additional angle, the value of which is proportional to the diameter of the circumference described and can reach 120 ° (0.33 turns) in a section of 0.5 of this circle. This damage leads to an increase or decrease (depending on the direction of the bypass of the contour and the direction of rotation of the drive shaft) the speed of movement of the cutter, i.e. the cutting speed in different parts of the circle. At the number of revolutions of the drive shaft, deviations of the cutting speed from the nominal one can reach values of + 7%. Allowable speed deviations for oxygen cutting are + 10%. It can always be provided that will reduce speed fluctuations. The present invention allows: to decrease n - times before; the exact number of the drive gearbox, which leads to a reduction in the number of stages, the number of switching, a significant simplification of the design; ZZ reduce by n times the effect of the iosite turn of the frames on the cutting speed and thereby eliminate and the need to connect the leading mechanism with the pantograph. This will allow the drive mechanism to be mounted on the frame motionless and to disarm the possibility of operation of single-cut machines without an iantograph. Subject and use of a multi-cutter hinged gas cutting machine, containing a column with hinged frames and a traverse mounted on one of the frames, a driving mechanism and a circulating device, made in the form of a rod connected to the traverse and driving mechanism characterized in that, in order to reduce the gear ratio of the drive mechanism and increase the stability of the cutting speed, the shtanga of the circulating device is connected to the drive mechanism and the crosspiece by means of two gear pairs mounted on the ends of the drill rod, one of which has can be moved along the axis of the rod.

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