SU139978A1 - Stone Cutting Machine Tool - Google Patents

Description

Known cutting tool stone cutting machine, made in the form of a flat toothed sector. The instrument is reinforced with a hard alloy and is driven in oscillatory movements in the plane of the cut with a vibrator.

A disadvantage of the known tool is that when working with it, providing the necessary depth of feed is associated with the movement of the stone-cutting machine.

The cutting tool made according to the invention is free from this disadvantage. The essence of the invention is that the toothed sector is eccentric on the shaft relative to the sector and with the ability to change the value of the eccentricity. The shaft is mounted) ia the frame of the stone-cutting machine.

FIG. 1 shows a schematic diagram, but clarifying the principle of operation of the instrument; in fig. 2 - the proposed tool.

The tool consists of bar 1, fittings 2 of hard alloy, ngangi 3 piston of a hydraulic vibrator, cylinder 4 hydrovibrator,. hydraulic vibrator, cylinder 6 fastening of the cylinder and frame 7 of the stone-cutting machine.

The stone-cutting bar represents a plate in the form of Thursdays (the hardness reinforced with solid alloy. The action of the bar. Larae Moro can be seen from Fig. 1. If you take the plate and give it oscillations about the O point, then depending on the eccentricity of the point O relative to the center of the plate, with the same oscillation value, we obtain different feed amounts S ,. Schemes a, b, c, d (Fig. 1) show that, depending on the distance of the center of oscillations O from the center of the plate, with the same kilobania L, and the various quantities of hearth and S. In this manner for a possibility of supplying an .ch rezhushego instru.menta in stone carried out independently of the movement of the stone-cutting machine. At this feed

No. 139978-- 2 cutting tools will depend on the amplitude of the oscillation and the magnitude of the eccentricity.

The bar is rotated into vibrations with a hydraulic vibrator, which is most applicable at large amplitudes of medium and low frequency oscillations. A disturbing force in the vibrator arises from an imperative change in the direction of pressure on the walls of a two-way piston. The change in pressure direction is achieved by periodically opening and closing the spool. The disturbing force is transmitted through the piston rod directly to the stone-cutting bar, which makes it possible not to limit power, frequency and amplitude as in the case of transmission of forces through bearings and other mechanical components. Along with typical assemblies and parts such as cylinders, pumps, flow controllers, oil lines, etc., the hydraulic vibrator design includes a rotary or reciprocating rotary device with electric control and electric drive.

This bar design successfully solves the question of the appropriate direction of the perturbing force, with the introduction of the tool and the shear of rock particles, using the chorus of the stone to the shock-cutting effect of the cutter, can significantly reduce the vibratory cutting power and is a further development of vibration cutting.

PREFACE 11 SECTION

The cutting tool of a stone-cutting machine, made in the form of a flat, reinforced with a hard alloy, toothed sector, causes me to oscillate in the plane of the cut with a vibrator, which is perfect to ensure the required depth of the cutting when cutting the stone, regardless of the movement of the machine, the toothed sector placed on the shaft mounted on the frame of the stone-cutting machine, eccentric about the axis of the sector with the possibility of changing the value of eccentricity.

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