By xzbbvfvbh, 2018-11-12
customized metal cutting disc
There are more and more products for cutting machines in the market, and there are many varieties, but in operation and installation, many customers will ignore some details, which are often the key to accidents or damage to the machine. Next, the cutting chip manufacturer teaches you how to do the inspection before the cutting machine is installed: 1) Check the outer casing of the machine, and the outer casing must not be damaged. 2) Check the customized metal cutting disc and use the cutting piece to be intact. Inspection method: Observe the cutting piece without gaps or cracks. 3) Check that the cutting blade cover should be in good condition. 4) Check the cable and the plug must not be damaged. 5) Power on and run for 1 minute, check whether the rotating parts of the tool are flexible and unobstructed. 6) Before turning on the power, check if the power supply voltage meets the requirements and the switch is in the OFF position. The resin cutting sheet has high strength, and the main member of the diamond resin cutting sheet has higher hardness. The diamond resin cutting sheet is mainly used for grinding high and hard alloys, non-metal materials, cutting hard and brittle hard alloys, non-metallic minerals and the like. The diamond resin cutting sheet has a good polishing effect, and the cutting piece is sharp and difficult to block when grinding. 1. Diamond resin cutting sheet is low temperature curing, the production cycle is short, the equipment and supply process are relatively simple; because of the fluidity of the resin, it is easy to form a cutting surface of complicated surface. 2. Self-sharpness, low heat generation during grinding, not easy to block, reducing the phenomenon of work burns during grinding. 3. The 125*1*22 EN12413 cutting disc has a certain elasticity, which is beneficial to improve the roughness of the surface of the workpiece, and is mainly used for the processes of fine grinding, semi-finishing, knife grinding and polishing. 4. The grinding efficiency is high, and the cutting piece consumption is relatively slow.
125*1*22 EN12413 cutting disc
By xzbbvfvbh, 2018-11-09
When using customized metal cutting disc, sometimes the effect is not ideal, the thickness is not uniform, and the edge is incomplete. The main reasons for the poor performance of these resin cutting sheets in specific operations are as follows: 1. The screw of the fixed trolley screw housing is loose. At this time, the rotating screw needs to be adjusted. 2. The gap between the screw and the nut is large. The operation does not eliminate the gap. Pay attention to remove the gap in one direction during operation. 3. The resin cutting piece end is skipped large, and the saw blade needs to be tested. 4. The drive chain is too loose. 5, in the operation of the machine is not stable, there will be such a situation. 6. The main bearing clearance is too large, the spindle bearing is damaged, causing the saw blade to run unsteadily, and the radial amplitude of the saw blade is too large. These are the causes of the problem. We often use resin dicing sheets and ceramic dicing sheets, the difference between the two is that the dicing sheet has different bonding agents. In terms of the nature of the binder, the ceramic binder is an inorganic binder and the resin binder is an organic binder. Thus the properties and uses of the two cutting sheets are different: 125*1*22 EN12413 cutting disc: A dicing sheet made of a resin binder. The resin has a small shrinkage rate and a low hardening temperature, and can be made into a plurality of complicated shape cutting sheets, and can also be embedded with a reinforcing material such as a metal ring and a glass mesh cloth, so that the cutting piece has high rotation strength and can be subjected to heavy load or impact force. Working under great bad conditions. Such as high-speed heavy-duty cutting blades with a speed of 50 m / s, the load is generally as high as 5000 cattle. The resin has a certain elasticity, and the mirror-polished cutting piece made of the same can obtain a small surface roughness of the workpiece. It is also possible to form a cut or grooved cut piece of 0.8 mm or less by utilizing the plasticity before the resin is hardened. Ceramic cutting piece: The ceramic cutting piece is used to make the synthetic cutting piece, which has good stability. It can be wet-grinded by various cutting fluids during processing, and can also be dry-grinded. Ceramic cutting discs are widely used for internal and external grinding, flat surfaces, and are suitable for forming grinding and grinding of tools, gears, threads, crankshafts, etc. The ceramic cutting piece can also be made into a high-speed cutting piece, which can be used for high-speed grinding, working speed up to 60 m / s, and slow-feeding to strongly grind ceramic cutting piece, with a depth of 10 to 20 mm. The types of common resin-cut sheets on the market are: A, WA, SA, PA, GC, C, 38A, DA, and 19A. Users can choose according to their own use.
By xzbbvfvbh, 2018-11-08
Unbalanced The reason is as follows: the material is not evenly scraped; the 6 inch es cutting disc is not parallel when the pressing type is out of tolerance; the geometrical precision is not good during processing; the thickness of the horn is inconsistent, the spring is hard and soft, the turntable is not stable, and the car has collision. Prevention method: The material should be evenly scraped; pay attention to check the accuracy of the mold, press and trolley; strictly operate and ensure the accuracy; the thickness of the horn is consistent, the spring should be checked frequently, pay attention to check the stability of the turntable, and control the speed of the car. Hardness does not match Cause: The formula is incorrect; the ingredients are not correct; the forming single or pressed thickness does not meet the tolerance; the temperature does not conform to the process; the raw materials are unqualified. Prevention method: Pay attention to the correctness of the formula; strengthen the operation, pay attention to the inspection; strengthen the operation, pay attention to the inspection; control the firing process and the kiln location; strengthen the inspection of raw materials entering the plant. 14 inches cutting disc foaming Causes: the binder has low refractoriness; the binder is added; the mismatching binder; the firing temperature is too high; the humectant is used in too much wrong amount; the kiln is not suitable. Prevention method: adjust the ratio; the binding agent should be accurate; strengthen the inspection to prevent mismatching; control the firing curve; strictly increase the amount; Burst Cause: The cooling rate during cooling is too fast; the temperature of the kiln is too high. Prevention method: control the appropriate cooling rate; control the temperature of the kiln, not too high. Black heart Cause: The sand is too fine; the kiln is too dense; the atmosphere is not good; the ingredients are wrong; the formula is problematic; the temperature is high; the humectant is wrong. Prevention method: generally use coarse sand; control density; should maintain oxidizing atmosphere; strictly check to avoid errors; adjust formula; control high temperature point and combustion chamber temperature; avoid mistakes. Coarse grain low price disc for metal cover Cause: The bond has low refractoriness and high fluidity; there are too many pieces per kiln. Prevention method: Adjust the ratio of the binder, and then put it into production after verification; control the number of tablets per tablet. Not enough size after burning Cause: The blank is not enough; the temperature is high; the quality of the raw materials is not good; the number of kiln is more than the specified. Prevention method: Appropriate increase of retention; control of temperature; strict inspection of incoming raw materials; strict process discipline. Turn waste Cause: The firing temperature is high or low; the mixing is uneven; the unbalanced grams are large; the binder is used incorrectly; the binder is mismatched. Prevention methods: control temperature and firing location; strengthen mixing operation; improve balance performance; strengthen self-test to avoid errors. Iron spot Cause: The quality of the raw materials is poor; after the equipment is overhauled, the cleaning is not good; the firing temperature is too high. Prevention method: Strict inspection; after strict cleaning, remix; control the firing temperature.
By xzbbvfvbh, 2018-11-07
The distance between the cutting blade and the workpiece carrier should be less than one-half of the minimum dimensions of the workpiece being ground. It must be tightened after adjustment. A center bracket should be installed when grinding the outer circumference of the elongated workpiece. A 6 inch es cutting disc that uses a circumferential surface as a working surface should not be ground with a side surface to prevent the cutting piece from being broken. The maximum working speed used for the 14 inches cutting disc is not allowed to exceed the speed indicated on the cutting piece. Manually fed grinding machines prohibit the use of tools such as levers to increase the pressure of the workpiece on the cutting piece. Wear protective gear when dry grinding and trimming the cutting piece. Grinding machines using manual cutters and grinding speeds exceeding 60 m/s should be equipped with protective baffles to ensure the safety of the surrounding personnel. In the cold work site, the cutting piece should gradually increase the load when it starts working until the requirements of use are met, and the temperature of the cutting piece is gradually increased to prevent the cutting piece from being damaged. When using the grinding fluid, the cutting piece is not allowed to be partially immersed in the grinding fluid. When the grinding work is stopped, the grinding fluid should be stopped first, and the cutting piece continues to rotate until the grinding fluid is cleaned. It is not allowed to use the grinding fluid at temperatures below 0 °C. Any cutting piece has certain wear requirements, and the new cutting piece must be replaced after the wear level reaches a certain level. It is not necessary to use excessive wear in order to save materials. This is a very unsafe violation. It is generally stipulated that a new cutting piece should be replaced when the cutting piece is worn to a diameter 10 mm larger than the diameter of the chuck. The two people share a cutting machine at the same time and should be strictly prohibited. The cutting machine uses a power line, so the housing of the device must have a good grounding protection. The low price disc for metal is not allowed to be wet, so keep it dry frequently to prevent the balance from being lost after wet water.
By xzbbvfvbh, 2018-11-06
Wear problems Any cutting piece has its own wear requirements. If the wear condition reaches a certain level, it must be replaced with a new one. It is not necessary to use excessive wear in order to save materials. This is a very unsafe violation. It is generally stipulated that a new cutting piece should be replaced when the 6 inch es cutting disc is worn to a diameter 10 mm larger than the diameter of the chuck. The validity period problem is that the new cutting piece is not necessarily qualified for cutting from the warehouse, and even the new cutting piece is not necessarily qualified for cutting from the manufacturer. Any cutting piece has a certain expiration date, and it is used within the expiration date. It is qualified to cut the piece; if it is used beyond the expiration date, it is not necessarily qualified to cut the piece. The regulations stipulate that “the low price disc for metal should be used within the valid period. The resin rubber bond cutting piece must be subjected to the rotation test after one year of storage. Only qualified persons can use it”. If the surface of the cutting piece is cracked, it should be stopped immediately and replaced with a new cutting piece to avoid causing the cutting piece to break and cause injury. Other precautions Environmental problem cutting machine should generally set up a special cutting machine room, and it is strictly forbidden to stack inflammable and explosive materials near the cutting machine room or cutting machine to avoid fire or explosion accidents, and should not place other parts in the vicinity of the cutting machine. Management problem cutting machine should be responsible for the person who is not responsible for cutting the workpiece on the cutting machine. It is subject to the permission of the full-time responsible person and strictly abide by the safety operation rules. It is strictly forbidden to use the cutting piece without the consent of the responsible person. machine. In addition, the replacement of the 14 inches cutting disc should also be handled by a special person, and it is forbidden for others to replace and install the cutting piece. Close the car problem After the operator stops working, he should immediately turn off the car. It is forbidden to use the cutting machine without any use and idle under no-management. In addition, short-wave turbine cleaning should be maintained after use.
By xzbbvfvbh, 2018-11-05
The choice of binder should be considered in terms of grinding methods, speed of use and surface processing requirements. The most commonly used dicing sheet binders are ceramic binder (V) and resin binder (B). The ceramic bond is an inorganic binder, which has stable chemical properties, good heat resistance, good corrosion resistance and high porosity. The 6 inch es cutting disc made of the bond has high grinding efficiency and low wear, and can better maintain the low price disc for metal. Geometry, the widest range of applications. The cutting piece is suitable for grinding ordinary carbon steel, alloy steel, stainless steel, cast iron, hard alloy, non-ferrous metal and the like. However, the ceramic bond cutting sheet is brittle and cannot be subjected to severe vibration. Generally only use at speeds up to 35 m / s. . The resin binder is an organic binder. The binder produced by the binder has high strength, certain elasticity, low heat resistance, good self-sharpness, simple production and short cycle time. Cutting blades and very thin cutting blades that work at speeds above 50 m/s can be manufactured. Its application range is second only to ceramic bonding agents, and it is widely used in rough grinding, rough grinding, cutting and free grinding, such as grinding steel ingots, casting burrs and so on. It can manufacture high-speed, high-gloss cutting blades, heavy-duty, cutting and cutting discs with special requirements. The choice of organization mainly considers the pressure, grinding method and workpiece material of the workpiece. Tissue refers to the percentage of the volume of the dicing disc in the dicing sheet. The division level of the cutting piece is divided into 62% of the abrasive grain volume percentage of "0", the abrasive grain volume is reduced by 2%, the tissue is increased by the number one, and so on, which is divided into 15 numbers. The larger the number, the looser the organization. The tightly-cut cutting piece can grind a better surface of the workpiece, and the loosely-cut cutting piece can ensure the wear debris during the grinding process and avoid the blockage of the cutting piece due to the large gap. Generally, when coarsely grinding and grinding softer metals, the 14 inches cutting disc is easy to be clogged, and the loose cutting piece should be used; in the case of forming grinding and precision grinding, in order to maintain the geometry of the cutting piece and obtain better roughness, the comparison should be made. Tightly organized cutting discs; when grinding machine tool guides and cemented carbide tools, in order to reduce the thermal deformation of the workpiece and avoid burn cracks, it is advisable to use loosely-cut cutting pieces; materials with high heat sensitivity, non-ferrous metals and non-metallic materials should be used. A cutting piece larger than 12# tissue.
By xzbbvfvbh, 2018-11-03
The use of CNC tool grinding disc low price disc for metal directly affects the normal use of CNC tools. A small part can sometimes cause the whole project to fail. Therefore, we will introduce the automatic trimming and compensation method of CNC tool grinding machine diamond cutting piece today. . The development of automatic CNC grinding technology has put forward high requirements for its supporting equipment. As one of the supporting technologies, the online automatic cutting blade trimming technology must meet the needs of modern CNC grinding technology, and it is developing in the direction of high precision, ultra-stable and fully automatic control. As a highly efficient grinding tool, 6 inch es cutting disc are widely used in the processing of hard materials such as cemented carbide, ceramics and CBN. The dressing and automatic compensation method of the diamond cutting piece determines the performance of the fully automatic CNC grinding machine, which largely determines the performance and service life of the cutting piece. Diamond cutting chip dressing principle The diamond cutting piece dressing method is an important factor affecting the grinding performance of the cutting piece. The reasonable selection of the dressing method will directly affect the surface quality and grinding precision of the workpiece. Currently used diamond cutting blade dressing methods include: online electrolytic dressing, EDM cutting, cup cutting, electrolytic-mechanical compounding and laser trimming. Since the cup-shaped cutting piece dressing method is simpler and easier to implement than other dressing methods, the diamond cutting piece is automatically trimmed by the GC cup-shaped cutting piece dressing technique. The dressing of superhard abrasive cutting discs for diamond cutting sheets is usually divided into two stages: shaping and sharpening. Shaping is a micro-cutting of the cutting piece. The purpose is to remove the shape error and surface defects of the cutting piece after the initial installation, and to ensure the geometric accuracy of the cutting piece. The sharpening is due to the passivation of the cutting piece after working for a period of time. In order to make the cutting micro-blade protrude the bonding agent and have a proper height, a sufficient space for the chip is formed between the abrasive grains, and the number of effective abrasive grains per unit area is as large as possible. . Method for dressing bowl type diamond cutting piece with GC cup-shaped cutting piece The actual geometrical relationship between the GC cup-shaped cutting piece and the bowl-shaped diamond cutting piece and the movement form are shown in Fig. 1. The bowl-shaped diamond cutting piece and the GC cup-shaped cutting piece grinding belt are completely staggered and fitted, and are respectively rotated at a certain rotation speed, and the rotation speed of the dressing wheel and the cutting piece is positioned at 8:1. The dressing wheel is fixed, and the 14 inches cutting disc is trimmed and fed in the axial direction, so that the GC cup-shaped cutting piece and the bowl-shaped diamond cutting piece form mutual abrasive grinding. Through the grinding of the end faces of the two cutting pieces, the diamond cutting piece passivation abrasive grains are removed to form a chip space, and the surface of the diamond cutting piece is re-sharpened to achieve the purpose of dressing.
By xzbbvfvbh, 2018-11-02
The tissue cutting piece of the cutting piece reflects the proportional relationship between the abrasive, the binder and the pores. The denser the tissue, the smaller the ratio of the pores, the smaller the distance between the cutting edges, and the aluminum abrasive cutting disc is more likely to be clogged. The dicing sheet containing 53% abrasive grains was twice as high as the average clogging amount of 49.2% abrasive grains, and the dicing sheet containing 45% abrasive grains was less than half the average clogging amount of 49.2% abrasive grains. When grinding difficult-to-machine materials, the cutting piece with the organization number 7-8 should be selected. The influence of grinding conditions on the cutting speed of the cutting line speed is more complicated. When the cutting piece is increased from 28.8m/s to 33.6m/s, the speed is only increased by 16%, and the blocking amount is increased by three times. Since the increase in the linear velocity of the cutting piece reduces the maximum depth of cut of the abrasive grains, the cutting cross-sectional area decreases, and the number of cuttings and the heat of grinding increase, so that the amount of clogging increases. However, when the line speed of the high quality cutting disc supplier is high to a certain extent (for example, up to 50 m/s or more), the amount of clogging of the cutting piece is greatly reduced. Therefore, it is preferable to select the speed of the cutting piece during the grinding process to avoid the speed of 20 m/s to 50 m/s. Workpiece speed experiments show that the working speed is doubled and the amount of clogging of the cutting piece is increased by three times. Because the higher the workpiece speed, the larger the abrasive load, the shallower the penetration depth of the abrasive grains, and the smaller the cross-sectional area of the chips. When the grinding thickness is increased, the passivation of the abrasive grains is increased, and the grinding of the workpiece by the cutting piece is increased. The pressure is equivalent to the hardening of the characteristics of the cutting piece, which increases the clogging of the cutting piece. Grinding method In the grinding method, any grinding that increases the contact area between the cutting piece and the workpiece will aggravate the blockage of the cutting piece. This is because the contact area between the cutting piece and the workpiece is large, and the abrasive cutting edge will be scratched multiple times on the same wear mark, so that the grinding layer strengthening on the workpiece is intensified, and the coolant is difficult to enter the grinding zone, and the grinding heat is high and the temperature is high. High, creating conditions for clogging, prone to chemical sticking and embedding plugging. If the end grinding is easier to block than the circumferential grinding, the transverse cutting grinding is more serious than the longitudinal grinding. Radial cut-in radial cutting amount has a hump-like effect on the blockage of the cutting piece. When the radial cutting amount is small, (ap<0.01mm), the clogging phenomenon occurs. As the amount of cutting increases, the average clogging amount also increases. When the cutting amount is large to a certain extent (ap=0.03mm), the clogging amount is again The trend is reduced, and then as the amount of cut continues to increase (up to ap=0.04 mm), the amount of clogging rises sharply. Different grinding fluids of grinding fluid have a great influence on the grinding effect. At present, the common emulsion contains a large amount of mineral oil and oily additives. After dilution, it is an oil-in-water emulsion white liquid, which has a small specific heat capacity and thermal conductivity, and is in a severe friction process. It is easy to cause adhesive wear and diffusion wear between the China cutting disc for metal and the workpiece, which causes the cutting piece to be clogged, the grinding force to increase, and finally causes the abrasive to break and fall off prematurely, so that the grinding ratio is lowered. Therefore, the selection of an excellent grinding fluid plays an important role in improving the grinding performance.