DIAMOND TIP DISK SAW

Abstract: The invention relates to a diamond tip disk saw which does not vibrate during high speed rotation and could enhance the quality of cutting surface of works and higher durability of the machine. According to the invention, there is provided a diamond tip disk saw which is composed of metal disk (10) having a shaft hole (11) and a plurality of diamond tips (12) on both sides of the periphery, and said disk (10) being made through heat treatment, wherein on the intermediate part between said shaft hole (11) and the diamond tip (12) there is provided a corrugation (22) extending radially, and between the corrugation (22) and the diamond tip (12) there is provided a correction part (26) which has no corrugation, and there are provided a plurality of reinforcing tips (24) disposed on the radially inner part of the diamond tip (12).

Description: DIAMOND TIP DISK SAW TECHNICAL FIELD The invention relates to a diamond tip disk saw, and more particularly to a diamond tip disk saw which does not vibrate during high speed rotation and could enhance the quality of cutting surface of works and higher durability of the machine. BACKGROUND OF THE INVENTION The diamond tip disk saw is a tool composing of a metal disk and diamond tips attached on the periphery of the metal disk and used for cutting or grinding the hard material such as stones. Figure 1 shows the conventional diamond tip disk saw, in which the metal disk(lθ) has the diamond tips(12) along the periphery of it. These diamond tips(12) are made by sintering the mixture of diamond particles and metal powders and by bonding or welding the mixtures onto the metal disk(lθ). And between the adjacent diamond tips(12) there are provided recessed grooves(14). And on the middle part of the metal disk(lθ), there are provided curved corrugations(lθ), the recess part of which connects to the groove(14). The corrugation(16) may enhance the rigidity of metal disk(lθ) and bring about the radially outward air flows which may exhaust the heats and chips generated during the cutting operation. And in case that a plurality of metal disks(lθ) are overlapped to each other, the adjacent corrugations(β) will form the paths through which the heats and chips are exhausted. On sintering process of diamond tip(12) onto the metal disk(lθ) or on press forming process of the corrugation(16), the metal disk(lθ) will be put into the heat treatment to improve the hardness or other properties. The corrugations(16) of the disk(lθ) extend from the middle part of disk(lθ) to the grooves(14) of periphery as they are gradually widen. So, If the outer part of the corrugation(lβ) is damaged by scratches or by any external forces during cutting operation, the thickness of the outer part of the disk(10) will become non-uniform, and the weight distribution of the disk(lθ) will also become unbalanced This non-uniformity of the weight distribution will cause the considerable vibration of disk at high speed rotation. Therefore, the precise machining would not be attainable, and the apparatus may easily get into a breakdown. Moreover, it will be possible that the disk saw may be non-uniformly deformed by heating or cooling during heat treatment process. This deformation will make the cutting surface of works rough to lower the quality of products, and will increase the operation noises, eventually will result in the breakdown of the disk. Therefore, it is necessary to check the deformation of disk(lθ) by test operation with a tester which is equipped with a dial gauge and, if necessary, correct the deformation by striking or pressing the surface of disk(lθ) after it is firstly formed and heat-treated. But, in the conventional disk saw such as in Figure 1, the corrugation(lθ) extends to the outer part of the disk(lθ), so the deformation check is difficult because of uneven corrugation(16), and even though it is possible to check the deformation, the correction of deformation is difficult due to the rigidity, and the deformation of corrugation(16) damaged during use could not be easily cured. SUMMARY OF THE INVENTION The invention is to solve the above mentioned problems of disk saw, and the object of the invention is to provide a new diamond tip disk saw which is capable of high speed and precise cutting or grinding with reduced vibration, and is also capable of easy correction of deformation after it has been formed and heat-treated, so that it could achieve high quality of work and it could have enhanced the durability. According to the invention, there is provided a diamond tip disk saw which is composed of metal disk(lθ) having a shaft holed 1) and a plurality of diamond tips(12) on both sides of the periphery, and said disk(lθ) being made through heat treatment, wherein on the intermediate part between said shaft hole(ll) and the diamond tip(12) there is provided a corrugation(22) extending radially, and between the corrugation(22) and the diamond tip(12) there is provided a correction part(26) which has no corrugation, and there are provided a plurality of reinforcing tips(24) disposed on the radially inner part of the diamond tip(12). BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a conventional diamond tip disk saw. Figure 2 shows a preferred embodiment of the invention. Figure 3 shows a section taken along the line a- a of Figure 2. Figure 4 shows another preferred embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION Preferred embodiments of the invention will be explained below with reference to the drawings. Figure 2 and 3 show the preferred embodiment of the invention, in which the steel disk(lθ) with a center shaft holed 1) have a plurality of diamond tips(12) along the edge periphery of it. Grooves(14) are formed between each diamond tip(14). The diamond tip(12) is made by sintering and welding the mixture of diamond particles and metal powders onto the disk(lθ). And a plurality of reinforcing tips(24) are extending inwardly from the inner part of diamond tips(12) with a predetermined interval. The number of reinforcing tips(24) is fewer than that of diamond tips(12), but the shape of reinforcing tips(24) is similar to that of diamond tips(12). The main function of reinforcing tip(24) is to reinforce the periphery of disk(lθ) rather than to cut or grind. In the intermediate part between shaft holed 1) and diamond tip(12) or reinforcing tip(24), there are provided corrugations(22) which are curved and radially extending, but they are apart from the diamond tips(12). These corrugations(22) may enhance the rigidity of the disk(lθ) and cause rapid air flow between the rotating disks(lθ) so that the heat or chips generated in operation should be rapidly exhausted. The outer end of these corrugation(22) has sufficient distance from the reinforced tips(24) as well as diamond tips(12). This part between the corrugation(22) and diamond tip(12) is almost flat and forms the correction part(26). Because the outer end of the corrugation(22) does not extend as far as to the diamond tip(12), the weight unbalance of the disk periphery may be reduced so that the vibration could be advantageously reduced in high speed rotation. Moreover, because there is provided a flat correction part(26) between the corrugation(22) and diamond tip(12), it will be easy to correct the deformation detected during the test rotation after it is firstly formed and heat-treated. By striking or pressing the proper part of the correction part(26) of the disk(lθ), the deformation may be eliminated and the weight distribution may be balanced. And the deformation caused at the time of use may also be corrected by striking or pressing the correction part(26). As a result, the quality of cutting surface of the works will be highly maintained, the probability of breakdown may be reduced and the durability of the machine may be increased. Figure 4 shows another preferred embodiment, which has radially extending straight corrugation(22) instead of curved corrugation. As shown in Figure 4, the shape of corrugation(22) of the disk(lθ) according to the invention may be properly determined in consideration of other properties so long as the corrugation part(22) be kept flat. As described above, the disk saw of the invention could enhance the rigidity of disk(lθ) by providing the reinforced tips(24) on the inner part of the diamond tips(12) and the corrugation(22). But as the corrugation(22) does not extend to the periphery of the disk(lθ) to secure the space of the flat correction part(26), the vibration of high speed rotation owing to the inevitable dimension error of corrugation(22) could be efficiently prevented, and the deformation of the heat-treated disk(lθ) detected by test may be easily corrected, and the deformation by the damage in use may be also easily cured. Therefore, the quality of the cutting or grinding will be highly improved and the durability of the machine will be also enhanced. 4 -

Claims: CLAIMS: 1. A diamond tip disk saw which is composed of metal disk(lθ) having a shaft holed 1) and a plurality of diamond tips(12) on both sides of the periphery, and said disk(lθ) being made through heat treatment, wherein on the intermediate part between said shaft hole(ll) and the diamond tip(12) there is provided a corrugation(22) extending radially, and between the corrugation(22) and the diamond tip(12) there is provided a correction part(26) which has no corrugation, and there are provided a plurality of reinforcing tips(24) disposed on the radially inner part of the diamond tip(12).

Inventors: JI BEOM HYUN, JI, BEOM, HYUN
Applicants: HYO SUNG DIAMOND IND CO LTD, JI BEOM HYUN, HYO SUNG DIAMOND INDUSTRIAL CO., LTD., JI, BEOM, HYUN
Application year: 1999
Main classification: B28D1
IPC codes: B23D61, B24D5, B28D1