JPH03104552A - Cutting device - Google Patents

Abstract

PURPOSE:To use a thin guide plate in its tension state by supporting the guide plate at the vicinity of both end parts. CONSTITUTION:A thin guide plate 4 is arranged in the bridging state on the holding part 2 of the base side of a frame 1 in about U shape and the holding part 3 at the tip side and both the end parts vicinities of the guide plate 4 are fixed in a tension state by the fixing means 5, 6 of a bolt, etc., for example, at the holding parts 2, 3. On the outer peripheral face of the guide plate 4 plural cutting edges composed of a wire saw or chain saw, for instance, an endless cutting edge 7 connected with a grindstone tip is wound, and made so as to rotate along the peripheral edge of the guide plate 4 by an adequate driving source. Due to this guide plate 4 being composed of a thin body, the endless cutting edge 7 arranged along the peripheral edge of the guide plate 4 uses a slender body.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an apparatus for cutting a hard workpiece such as natural stone using an endless cutting blade such as a wire saw or a chain saw and winding the cutting blade around the circumferential surface of a guide plate.

[Prior art]

Various configurations of cutting devices using a wire saw or a chisel saw wound around a guide plate of this type are known. Conventional guide plates are of the so-called cantilever type, with one end fixed to the main body equipped with the drive source for driving the wire saw or chain saw, and the other end left free. have.

[Problem to be Solved by the Invention 1] When using the cantilever type guide plate in the conventional example, vibration from the drive source side is transmitted to the free end side, and the transmitted vibration causes the vibration to be transmitted to the free end side. It is generally known that a large amount of blur occurs. Also, in actual use, when a large load is applied to the cutting edge, the guide plate may become distorted.
If it becomes impossible to maintain a predetermined tension on the endless cutting blade, there are problems in that it may come off the guide plate or the endless cutting blade may be damaged due to localized stress concentration. Therefore, in order to prevent vibration and wobbling, as well as to prevent the endless cutting blade from coming off or being damaged, it is necessary to increase the thickness of the guide plate and increase the rigidity of the guide plate itself. However, it is clear that as the guide plate becomes thicker, the width of the cutting or cutting allowance becomes wider, and when such a cutting device is used for cutting expensive natural stone, especially for slicing, the cutting allowance becomes too wide. There is a major economic problem in that expensive natural stone is wasted. [Means for Solving the Problems] As a specific means for solving the problems of the conventional example, the present invention provides a cutting device equipped with a guide plate around which an endless cutting blade in which a plurality of cutting blades are arranged in series is wound. The present invention provides a cutting device characterized in that the guide plate is supported near both ends, and furthermore, two or more guide plates are arranged in parallel, and the guide plate is provided with endless cutting. Either the blades are wound around each other, or the guide plate has 3 endless cutting blades! I! The endless cutting blade is configured to be either a wire saw or a chain saw, and by supporting and tensioning the guide plate at both ends, a significantly thinner blade can be used. This makes it possible to reduce the cutting allowance, and by arranging a plurality of guide plates, it is possible to improve workability by being able to perform a large number of cuts at the same time. [Embodiment 1] Next, the present invention will be explained in more detail with reference to the illustrated embodiment. In the first embodiment shown in FIG. Part 2
A thin guide plate 4 is disposed in a bridging state between the holding part 3 on the distal end side, and the vicinity of both ends of the guide plate are held in tension by fixing means 5 and 6 such as bolts in the holding parts 2 and 3. Fix it with. A plurality of cutting blades made of a wire saw or a chain saw, for example, an endless cutting blade 7 with continuous grindstone chips, are wound around the outer periphery of the guide plate 4. It is designed to rotate along the Naturally, since the guide plate 4 is made of a thin material, the endless cutting blade 7 disposed along the periphery of the guide plate is also made of a third-grade material. The drive source may be installed by the same means as in a so-called engine chain saw, and the direction of rotation of the endless cutting blade 7 may be the same as that in an engine chain saw. In the second embodiment shown in FIG. 2, a plurality of thin guide plates 4 similar to those of the previous embodiment are arranged at predetermined intervals, and the intervals are determined by slicing the workpiece into a predetermined thickness. This is the interval for the purpose of this, and can be changed as appropriate. That is, a frame 1a that is thicker and wider than the frame 1 of the first embodiment is used, and a plurality of guide plates 4 are arranged in parallel between the base-side holding part 2a and the distal-side holding part 3a.
are arranged, and spacers 8 are interposed between each guide plate to maintain a predetermined interval. By appropriately selecting the thickness of these spacers 8, the required spacing can be set. Further, both ends of each of the guide plates are held at the holding parts 2a, 3a of the frame 1a by internal fixing means 5, 6 such as bolts.
The guide plate is the same as the previous embodiment in that it is fixed in a tensioned state and that endless cutting blades 7 are provided on the outer peripheral surface of each guide plate. In the third embodiment shown in FIG. 3, the structure of the second embodiment is the same except for the structure of the endless cutting blade and the suspension state, so the same parts are the same. A code will be added and the details will be omitted. That is, a long endless cutting blade 7a is used to continuously wind the adjacent guide plates 4, and for this purpose, the phase guide roller 9 is placed at the end of each guide plate. Return guides [1-10] are provided near the ends of the guide plate, which extends on both sides. In other words, the phase guide roller 9l is provided with the long endless cutting blade 7a in a spiral shape at the upper part of the guide plate disposed adjacent to the guide plate, and A return guide roller 10 is provided so as to return to the guide plate located at the other end, and is wound in series, so that the endless cutting blade 7a can be driven by one drive Ja. In any case, they have in common that they use a thin guide plate and a slender endless cutting blade. Note that the frame 1 may be configured to be expandable and contractible, and the guide plate 4 may be configured to be adjusted to a tensioned state as appropriate. [Effects of the Invention 1 As explained above, the cutting device according to the present invention is a cutting equipment equipped with a guide plate around which an endless cutting blade having a plurality of cutting blades is wound. By supporting the board near both ends, the thin guide plate can be used in a tensioned state, and a slender endless cutting knife can be wound around it, reducing the cutting allowance. It is extremely narrow, and even if expensive natural stone is cut, material waste is greatly reduced, resulting in an economically superior effect. Further, two or more of the guide plates are arranged in parallel, and the endless cutting blades are respectively wound around the guide plates, or the endless cutting blades are continuously wound around the guide plates, As a result, there is also the effect that the workability is excellent in that a large number of cuts can be made simultaneously in one cutting process.

[Brief explanation of drawings]

FIG. 1 is a side view of a cutting device according to a first embodiment of the present invention, FIG. 2 is a plan view showing a main part of the second embodiment in cross section, and FIG. 3 is a side view of a cutting device according to a third embodiment of the present invention. FIG. 3 is a plan view showing a main part in cross section. 1, 1a...Frame 2, 2a...Base side holding parts 3, 3a...Tip side holding part 4...Guide plate 5, 6...Fixing means 7
, 7a...Endless cutting blade 8...Subasa 9.
・・・・・・Phase roller 10・・・・・・Return opening-ra

Claims (4)

[Claims] (1) A cutting device equipped with a guide plate around which an endless cutting blade including a plurality of cutting blades is wound, the guide plate being supported near both ends. Device. (2) The cutting device according to claim 1, wherein two or more guide plates are arranged in parallel, and an endless cutting blade is wound around each guide plate. (3) The cutting device according to claim 1, wherein two or more guide plates are arranged in parallel, and an endless cutting blade is continuously wound around the guide plates. (4) The cutting device according to claim (1), (2) or (3), wherein the endless cutting blade is either a wire saw or a chain saw.