SU1386472A1 - Apparatus for sawing natural stone blocks into panels - Google Patents

Abstract

The invention relates to equipment for processing natural stone, in particular for cutting into slabs of stone blocks. The purpose of the invention is to increase the productivity and quality of sawing of rock spirits. This is achieved by installing a 5 lt trolley, l fixing blocks of stone on straight guides 6, mounted on a table 7, provided with supporting elements 8 in contact with fixed curvilinear guides, forming a working surface of which has the shape of cycloid arcs or their equidistant. 7 il.

Description

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The invention relates to equipment for processing natural stone, in particular for sawing blocks of predominantly hard rock, for example granite, on slabs.

The purpose of the invention is to increase the productivity and quality of sawing hard rocks.

FIG. Figure 1 shows the construction in which the table is mixed along cycloidal rails, general view; in fig. 2 is a diagram explaining the execution of cycloid guides, approximating their curves or equidistant cycloid; in fig. 3- the structure in which the table is connected by means of joints with curves, a general view; in fig. 4 is a diagram illustrating the operation of the device; in fig. 5 is a diagram of the formation of the line of contact of the instrument with the material being processed; in fig. 6 shows section A-A in FIG. one; in fig. 7 is a section BB in FIG. 3

The device comprises a frame 1 with guide columns on which a saw frame 3 is mounted by means of the feed mechanism 2 and connected to the reciprocating movement mechanism 4. A trolley 5 for fastening a block of stones is mounted on straight guides 6 fixed on a table 7, provided with supporting elements 8 in contact with stationary cycloidal guides 9, and connected to a mechanism 10 of its oscillating movement along guides 9.

Guides 9 are arc-shaped cycloid or cycloid approximating curves, or equidistant cycloid.

Table 7 is equipped with hinges 11 connecting it with cranks 12, on the other ends of which are mounted hinges 13, the axes of which are located in the centers of a circle, approximating cycloid.

The device works as follows.

The mechanism 4 provides the saw frame 3 with a reciprocating movement at cutting speed. The feed mechanism 2, when changing the direction of the oscillating movement of the table 7 with the carriage 5 and the stone unit, produces a cyclic feed of the saw frame by an amount h.

When the supporting elements 8 of the table 7 are moved along the cycloidal guides 9 under the action of the mechanism 10, the band saw forms a bottom surface in the form of a circle of radius /.

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When oscillating the movement of the table 7 with the cart 5 and the block and cyclically lowering the saw frame 3, for each half-period, the saws cut off a layer of material equal to / g. In this case, the contact line /, and hence the load on the saws, are constant throughout the entire half-cycle, except for the entrance and exit of the saw from contact with the material being processed. This contributes to the stabilization of the cutting ability and tool wear, as well as maintaining the high performance of the sawing process.

In those cases when the guides 9 are made in the form of curves approximating cycloids, the bottom shape differs from the circle, the process stability is smaller, however, the deviation may not exceed the allowable ones if the approximation is performed with sufficient accuracy.

One of the curves approximating a cycloid arc can be a circle. In this case, in order to increase the rigidity of the system, it is possible to carry out the proposed device, in which the table is connected by means of hinges with cranks and its operation is carried out as follows. The saw frame 3, under the action of mechanisms 2 and 4, performs the same working movements as in the first embodiment.

The mechanism 10 imparts an oscillatory motion to the table 7, in which its supporting hinge elements 8 move along circumferences whose radii are cranks 12.

(claims

A device for sawing on plates of blocks of natural stone, comprising a frame on which a saw frame is installed, having a mechanism for its feeding and reciprocating movement, a carriage for securing blocks of stone mounted on straight guide tables with supporting elements moving along curvilinear guides , characterized in that, in order to increase the productivity and quality of sawing up of hard rock, curvilinear guides of supporting elements are made with forming the working surface in IU arcs or cycloids equidistant cycloid or approximating their curves.

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Claims (1)

A device for sawing blocks of natural stone onto a block containing a bed on which a saw frame is installed, having a mechanism for feeding and reciprocating movement, a trolley for securing stone blocks mounted on straight table guides with support elements moving along curved guides, characterized in that , in order to increase the productivity and quality of sawing hard rock, curved guides of the supporting elements are made with the generatrix of the working surface in the form y cycloid or cycloids equidistant or approximating their curves.