Views: 0 Author: Site Editor Publish Time: 2021-11-17 Origin: Site
The decoration material of natural stone (nature stones): building, natural color, colorful, beautiful and durable, luxurious style, the ideal choice of modern high-grade architectural decoration.
Wear problem of the stone cutting segment
Parameter selection of stone cutting segment
Processing method of the stone cutting segment
Diamond sawing tool has excellent cutting performance and wear resistance, which has been widely used in many industries such as stone, but the cost of diamond saw blade is high, and its service life directly affects the processing cost of stone. Therefore, while correctly selecting the saw blade, reasonable sawing process parameters should be adopted in order to improve the service life and cutting efficiency of the saw blade.
Among the sawing process parameters, sawing speed has the greatest influence on the wear performance of saw blade, which is mainly caused by the change of sawing temperature and mechanical load, resulting in different forms of wear of diamond abrasive particles. In the low speed zone, the mechanical load plays a major role in the wear of theDiamond Segment. With the increase of sawing speed, the cutting thickness and effective cutting area of single diamond abrasive particles decrease. Therefore, the mechanical load decreases, the radial wear of the saw blade decreases, and the diamond wear form is mainly flattened and shedding. In the high speed zone, the mechanical load impact and thermal load have a decisive influence on the saw blade wear. With the increase of sawing speed, the mechanical load impact and thermal load have a decisive influence on the saw blade wear. The impact of thermal load and mechanical load increases, the wear of saw blade intensifies, and the diamond abrasive particles are mostly broken.
The change of sawing depth and feed speed mainly affects the wear performance of the saw blade by causing the change of mechanical load. With the increase of sawing depth or feed speed, the cutting thickness of single diamond abrasive increases, the cutting load increases, and the wear of the saw blade intensify. In addition, increasing the sawing depth will also increase the arc length of contact between diamond abrasive particles and rock.
The wear form is mainly flattened, and the cutting edge becomes blunt, so that the cutting load increases and the sawing process is unstable. Under the same sawing rate, when the cutting depth is large and the feed speed is small, the cutting thickness of diamond abrasive particles is relatively reduced, the cutting path is long, the wear form of diamond abrasive particles is mainly caused by thermal load, while the number of broken abrasive particles is reduced: when the cutting depth is small and the feed speed is large. The cutting thickness of diamond abrasive particles increases and the cutting path is short. At this time, the wear form of diamond abrasive particles is mainly diamond breakage caused by mechanical load and its impact.
In addition, the shape of the saw blade itself, such as diameter, tooth number, slot width and so on, as well as the material of stone, the selection of coolant and so on, also have an important impact on the sawing process. Therefore, in the sawing of stone, it is necessary to comprehensively examine the sawing effect of many factors in order to obtain the most ideal sawing effect.
The copying cutting machine can be used to process the stone surface, and figure 2 shows its structure diagram. According to the desired surface shape, the homogeneous template 5 is made of other materials and fixed on the horizontal speed 6. The wheel 4 with the same diameter as the saw blade 3 is driven by the motor to move along template 5, and the hydraulic cylinder 9 is controlled. Up and down displacement: to drive the main shaft of diamond saw blade 3 for vertical feed motion. The diamond saw blade 3 is driven by the motor and acts as the main cutting motion. The feed motion of the saw blade segment is synthesized by the transverse feed motion of the spindle and the vertical motion of the hydraulic cylinder. Therefore, the transverse profile of the stone is determined by the shape of the template. When the die wheel completes a transverse stroke on the template, the crossbeam 6 is driven by the motor to move along the longitudinal guideway 8, and its longitudinal displacement distance is equal to the width of the saw blade, and then the transverse cutting is carried out, and the stone surface of the required size can be cut out by repeating the above actions. Copying cutting is suitable for mass production and can cut all kinds of concave and convex surfaces.
