SU399320A1 - DEVICE FOR CUTTING ON A CURVED TRAJECTORY - Google Patents

Description

one

The invention can be used in the manufacture of scans of the knee elements of metal pipelines.

Devices are known that contain a rectilinear moving carousel carrying a knot for creating a curvilinear trajectory with a cutter.

The aim of the invention is to increase the performance of the device.

For this, the curvilinear path creation unit is made in the form of a rotating disk associated with a frictional transmission with a carriage movement drive, while the cutter is fixed on this disk eccentrically.

FIG. 1 schematically shows the proposed device, a front view and a section along A-A; in fig. 2 - the same, cuts according to BB and B-B in FIG. one; in fig. 3 - the proposed device, rear view; in fig. 4 - pipeline knee, general view and sweep of knee elements with sinusoidal curves.

The device contains a carriage 1 with a gearbox 2 and a flap with pointers 3, an electric motor with a rheostat 4, a driving element of the transfer pair 5, which engages with the driven member 6 rigidly fixed with the wheel 7 on the shaft 8. The elements of the transfer pairs 9 fixed on the shaft 8 are leading and meshing with the driven members 10 fixed on the shaft I with

a sliding locking friction gear 12, which engages with the disk 13 by means of a presser 14 and a squeeze 15 mechanisms. The disk 13 rotates on the rollers 16 and 17 attached to the carriage 1.

The disk 13 provides an Iaz for mounting and securing mechanism 18 at various distances x from its center. The mechanism 1, with its bushing end, enters the vertical guide window of the rod 19, having rollers 20 at the ends for movement along the guide rails 21.

Cutter 22 with sleeves secured with screw 23 in the holder 24 with clearance adjustment

25 (or, instead, one autowrapper 26) inserted into the brace 27 is connected by a piece 28 with a rod 19. The contact with the guide rails 29 is made by the wheel 7 and the rollers 30 on the brackets 31 attached to the top of the carriage 1. To the carriage 1 a roller bearing 32 is also attached and by means of the mechanism 33 a circulating device 34 is pressed with a linear gauge 35. A risk is applied to the walls of the carriage

36, passing through the center of the disk 13, and the linear measuring bar 37 is fixed there, taking the reference point from risks 36.

On the wall of the housing is a locking device 38 attached to the connecting

Details 28. Risk applied to the same wall.

39, passing through the center of the disk 13, and a linear measuring scale 40 is fixed there, leading to a reading of risks 39 in two directions.

FIG. 4 The following notation is accepted: D is the diameter of the pipe in neutral, g is the maximum arrow of the sinusoid, I is the length of the sweeps, 41-43 are the knee elements of the pipeline, 44 is the axis of the sinusoid.

To form a sinusoidal curve, the squeezing mechanism 15 is set to the position shown by a dotted line, and the part 12, which has become detached from the disk l3, is fixed at a distance R from the axis of risks 36 on a scale of 37. The value of R is equal to the product of the diameter D of the pipeline by a neutral factor indicated on the flap 3 for this group of diameters. On a scale of 40, a cutter 22 or auto-wiper 26 is placed at a distance g from the axis of risks 39 and secured in this position by mechanism 18, holding the mechanism locking bolt through the window of the connecting piece 28. The roller 13 rotates the disk 13 by 90. This corresponds to the alignment of the axes mechanism 18, torch 22 or autowipe 26 with the axis of the risks 39 scale 40. Risks 36 and 39 devices must always be on the axis of the sinusoid.

Then include that transfer pair 9-10, which is indicated on the flap 3 for a given pipe diameter. The device is brought in, aligning the cutter 22 or the auto-wiping 26 with the beginning of the axis 45, positioning part 15 in the position shown by a solid line and turning on an electric motor with a rheostat 4. The driving element of the transfer pair 5 rotates the driven member 6 and the wheel 7 rotates the whole device along the guide rail 29. The transfer pair 9-10 rotates the shaft I, on which the friction gear 12 rotates at a distance R from the center and, being in

meshed with the disc 13, rotates it. For the entire path of the device, equal to the sweep length /, the disk 13 makes one complete revolution, and the mechanism 18 fixed therein, standing on axis 39, deviates from it to one and the other side, reaching the maximum value of g. Free end 18, input the rod 19, which is vertically guided in the window, with a pointed cutter or an auto-wiping screw is also

deviates from the axis 39 by the value of r in one and the other side. These deviations, extended over the entire length of the sweep, give a sinusoidal curve of a given size. For straight cutting, the gear in gearbox 2 must be turned off and the bracket 27 with the cutter 22 locked by the device 38.

For cutting a circle in its center, coreing is performed, a circulating device 34 is installed so that the distance between its button and the cutter mouth is equal to the radius of the required circle, and this position is fixed by clamp 33 and the stopper 38. Roller support 32 is also fixed. Wherein

the gear in the gearbox must be turned off, since the device is driven only by the drive wheel in a circle 5.

Subject invention

A device for cutting along a curved path, predominantly sinusoidal, comprising a linearly moving drive carriage carrying a knot for creating a curved path with a cutter,

characterized in that, in order to increase productivity, the curvilinear trajectory creation unit is made in the form of a rotating disk connected by a functional transfer with a carriage movement drive, with

this cutter is fixed on the specified disk eccentric.

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