Research progress of wire saw machine

Diamond beaded rope sawing machine is one of the main equipment for stone slab processing. With the development of stone quarry towards mechanization, Diamond rope saw has been widely used. The related research progress of the rope sawing machine is summarized as follows.

1. Related journal paper analysis
In the past two years, the research on the technical field of rope saw mainly focuses on the research and development of rope saw machine, bead design, rope saw control system and other aspects, including:
In regard to the development of wire sawing machine: in order to solve the existing mining is a mining process, low efficiency of mining, the problem such as high cost, long time to prepare, huaqiao university put forward a three-step model combined two block mining process, with two specifications (Φ 30 mm and 11.4 mm) Φ beaded wire sawing machine combination mining, mining process of the key technology and equipment for 132 kw mining waste materials using rope saw machine. This school designed the feeding mechanism and the position adjustment mechanism of the active wheel of the 132kW super power rope sawing machine. The 3d drawing design of the whole machine of super power rope sawing machine used in mine opening is completed. Mechanical analysis, optimization design and reliability test of main motor bracket are carried out. The whole machine control system of super power rope sawing machine is designed. Xiamen devotes itself to diamond technology co., LTD. In order to improve the cutting economy of precious stone materials, develops and produces a new type of structured 2.0mm diamond rope saw. The cutting parameters of the rope saw were determined and its performance was analyzed. The results show that the new type of rope saw has good cutting edge and is not easy to break the rope. The cutting speed is similar to that of the existing 8.8mm diamond rope saw. As the cutting seam is smaller, the cutting rate of stone materials can be increased by 20%~30%, and the cutting power consumption is small, the waste residue discharge is small, energy saving and environmental protection.
In beaded design aspects: China nonferrous guilin mineral geological research institute co., LTD., analyzes the granite, marble and cast steel microstructure, chemical composition, physical properties and compare the three different processing object in the chemical composition, physical properties and microstructure of the differences, and puts forward the processing of the three objects of wire saw beads formula design ideas: (1) when designing granite beads, diamond grade and concentration should be on the high side, diamond particle size according to the proportion of coarse, medium and fine to reasonable collocation. The hardness of metal matrix should match the hardness of granite to ensure the speed of diamond blade. The flexural strength of metal matrix is higher to avoid the premature loss of diamond, which affects the life of beads. (2) when designing the marble rope-saw beaded formula, the grade and concentration of diamond should be low, and the size of diamond should be appropriately matched according to the ratio of coarse, medium and fine. The hardness of metal matrix should be low to ensure diamond blade speed. The flexural strength of the metal matrix is high to avoid the premature loss of diamond, thus affecting the life of beads. (3) the formula design of cast steel rope saw beads should be similar to that of marble rope saw beads. The grade of diamond is lower and the concentration of diamond is higher. The hardness of metal matrix should match the hardness of cast steel to ensure the speed of diamond blade.
In terms of control system research, sichuan institute of building materials industry science has designed a rope-saw stone cutting steering system for stone quarry, which is convenient for rope-saw to cut stone in narrow quarry site. The rope saw on the fixed wheel only converts from the universal wheel to the direction of cutting stone. Universal wheel changed under the axis of rotation Angle, and then in the transformation of 90 ° position cover type bracket fixed rope wheel, can transform in a wide range wire saw stone cutting direction. Also a beaded saw vibration control system is designed, through the driven wheel braking load, to prevent from the vibration of the pulley between the stone material processing parts and beaded saw, avoid blade damage, prolong the service life of saw, at the same time to ensure the smooth cutting, smooth cutting surface.
2. Analysis of relevant Chinese patent applications
As of retrieval, complete the relevant domestic stone rope saw machine of an application for a patent for a total of 210 pieces, of which an application for a patent for invention, 70 (33.33%), effective, failure and firm whose invention patent in the 23 and 27, respectively, and 20, the rest is in a state of substantial examination; There are 140 applications (66.67%) for utility model patents, 92 of which are still valid.
Rope saw machine r&d activity is the most active areas in fujian province, a total of 86 patent applications, accounting for 40.95% of the national wire sawing machine technology patent applications, with the fujian is one of the country's largest granite origin, and gathered a batch of granite development enterprises in the province; Next came Guangxi, shandong, hunan, guangdong and Beijing, all with more than 10 patents filed.
Chinese patent applications for rope sawing machines mainly focus on the following technical fields:
B28d1/06, stone saw cutting device with reciprocating saw blade, 63 pieces;
B28d1/08, stone saw cutting device with circular cutter saw blade, 43 pieces
B28d7/00, suitable accessories for rope sawing machine, 43 pieces;
B28d1/02, stone saw cutting device, 42 pieces;
B28d1/12, specially suitable for stone sawblade processing, 23 pieces;
B23d57/00, sawing machine or sawing device, 18 pieces;
B23d61/18, special saw blade, such as wire saw blade; A piece saw or wire saw fitted with a diamond or other abrasive grain in the selected individual position, 12 pieces;
B29c45/14, insert preformed parts or layers, such as injection molding around insert parts or coating products, 9 pieces;
B28d1/22, stone cutting, 6 pieces;
B28d5/04, stone processing device with non-rotating tools, 6 pieces;
B23d65/00, cutting any kind of material for sawing machines or sawing equipment manufacturing, 4 pieces.
3. Future research direction
The future research direction of stone rope sawing machine is :(1) optimized beaded formula for stone with different hardness; (2) design of tensioning device, driving device and anti-shake device of rope sawing machine; (3) study on the tension constant technology of rope; (4) research on automatic control and early warning technology of rope sawing machine; (5) study on sawing process parameters of rope sawing machine; (6) research on the influence of the tension of the rope saw on the processing quality of sheet metal, etc.