The development of the hottest cutting tools bring

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The development of cutting tools has brought a new picture of engine cylinder block processing

for more efficient and environmentally friendly vehicles, engine technology is the most critical part. The development of new materials and design, quality level and manufacturing technology are the key factors for the performance of the engine, and the cost performance competitiveness is also important in the increasingly fierce competition. We need to process the engine cylinder block more efficiently, which is an important step to directly reduce the cost and processing time of each part

cast iron milling

in engine manufacturing, correct workpiece structure, good surface roughness and parts without scratches in the overall quality assurance are absolutely important goals. For the cost-effective parts to be produced, to face these increasingly high challenges, it is necessary to develop reliable and efficient tools and solutions for rough and finish machining, especially for the end faces of cylinder blocks and cylinder heads

in the first stage of casting processing and at the relevant casting suppliers, rough machining is a common process part of cutting into squares. There, the metal removal rate is the most important. Precision machining requires efficiency, reliability and quality. One of the challenging processes is the surface milling of the combustion surface, which is often the last process to complete the geometry of the cylinder block

cast iron is the most important material. Now, although gray cast iron is dominant, and its dosage is several times that of nodular cast iron and other types of cast iron, there are still a variety of cast iron used. The new development of materials and production technology has expanded the application of vermicular graphite cast iron (CGI), austenitic malleable cast iron (ADI) and a series of alloy cast iron materials, which has expanded the selection range of machinability. The combination of cast iron lining and aluminum cylinder block leads to the requirement of bimetallic processing

recently introduced some cast iron milling solutions, which improve productivity and reliability

coromill 365

Sandvik clonon capping auto milling cutter is a leading tool in cast iron milling. Recently, small cutting volume cast iron parts and cutting in automobile manufacturing have increasingly tended to use machining centers for production. On production lines or single machine tools, more than 80% of the tool diameters are in the range of 63 ~ 160mm. The main role of TCA is to provide waste carbon fiber materials for CRTC products (including park benches). This reflects that today's cast iron milling is increasingly changing from heavy-duty mass production rough machining and finishing on production lines or heavy-duty machining centers to small-scale and light cutting on small machining centers

in the development of new milling tools required for heavy-duty milling applications, the goals include the feeding of starch based plastic into the workbench, which is the most common degradable material in our life, cutting force, workpiece fracture, burr formation, surface quality and noise level

in order to do this, on the new coromill 365 face milling cutter, the main deflection angle is increased from 45 ° to 65 °, which brings some advantages, such as closer to the fixture and softer cutting ability. However, this will increase the tendency of workpiece cracking when the tool exits cutting. This is what we need to pay attention to when changing the use of the testing machine, because the large radial force and the effect of flake graphite are produced when the tool leaves. In fact, according to the cracking limit of the workpiece, the setting of the tool standard must be changed frequently. In order to cope with the cracking effect caused by the increase of large main deflection angle, the coromill 365 blade is designed to be more beneficial to reduce cracking when the tool leaves the cutting

in addition, the groove shape of the new coromill 365 blade has also become a carefully integrated part of the 8-cutting edge blade, so that the cutting force points to the support of the blade seat, which is conducive to reducing workpiece cracking. Part of the blade groove is also 8 front corner chip removal grooves, which are positioned on two sides to support the blade in the best way

when cutting cast iron, it will be affected by a small but high-frequency force. The force often acts on the long cutting length of the tool, and the force needs to be distributed in the largest possible area. Therefore, the support of the tool and blade is very important. Coromill 365 blade is in the blade seat, with great support in radial and axial directions. Once the demand and supply are realized, the two wheel drive is extended directly to the cutting edge of the blade. This enables the blade to cope with heavy loads and prevent deformation, thus ensuring high processing safety in a long tool life

in order to have great side contact with the spindle of the machine tool, the tool body of coromill 365 milling cutter has a huge tool support surface, which increases the stability. The tool uses screws to clamp the blade, which makes the assembly of the tool very convenient. When the tooth pitch is very dense, it is clamped with wedges. When cutting cast iron, use coolant. The new face milling cutter has a through hole for supplying coolant, and each blade has an opening for coolant channel, which provides the maximum cooling effect

gripper cutters provide higher capabilities

medium to large face milling cutter finishing engines are mainly determined by the parameters of processing cycle time and quality limits, and the quality limits are constantly shrinking. Therefore, the ability to improve the high feed rate and surface quality must be contributed by the tool, which requires the selection of special tool pitch, the improvement of the axial installation accuracy of the blade cutting edge, and the use of polishing blades. The development of new cutting tool solutions and the proven milling tool concept meet these increasingly high capability requirements while providing high machining safety

now, coromill face milling cutters with interchangeable tool holders provide solutions for semi finishing, finishing and rough machining of cast iron and aluminum engine cylinders, cylinder heads and boxes. When the tooth pitch, accuracy, assembly and reliability of tools are decisive issues, mature tool holders based on concepts such as coromill 245 and century occupy their due position

The structure of the tool holder and the positioning, adjustability and locking of the blade form a decisive difference in cutting and assembly capabilities. The use of standardized cards on the tool body of standard or customized tools provides the ability to increase the number of effective teeth - which is critical to achieving higher productivity and surface quality requirements. The control of the axial position of each tool holder determines the consistency of the surface quality ability and the tool, and ensures the level of any replacement tool. Therefore, the small position error limit of the tool clamp on the tool body and the stability of the card, combined with good macro and micro installation accuracy, constitute the basis of tool capability. Through the design to achieve good basic accuracy, the tooth interface of the card and the blade technology with very small tool runout and polishing blade, these factors have led to a new level of performance and quality consistency

The interchangeability of the tool holder increases the safety and durability of large-diameter tools, and reduces the cost and inventory of tools. The availability of coromill century aluminum tool body facilitates tool replacement and assembly. Since the weight of large-diameter tools in the processing station has become a problem, this is also very meaningful. During the development of tool holders, attention has been paid to the danger of chip degradation of surface quality. As a result, the forced outflow of high-speed coolant from a single outlet on each newly designed tool holder makes the process safety an unimportant issue. The new structure effectively washes the chips away from the machining surface

many automobile milling processes are sensitive and affected by many factors. Therefore, when investing in large diameter tools, it is very important to have enough options. The investment in large diameter tools represents high tool costs. By using the standard coromill blade holder in the structure of the coromill tool holder, you can form many options for blade types of large-diameter milling cutters, including the use of polishing blades in several positions. This means that you can use any proven coating cemented carbide brand combined with a specific groove shape, to the latest generation of more specialized tool materials. The latest generation of tool materials include silicon nitride, CBN (cubic boron nitride) and PCD (polycrystalline diamond), all of which are on the tool holder tool platform. This method can optimize the application in production, increase the flexibility of tool selection, and help to find the best processing solution

coromill 365 face milling cutter and large diameter face milling cutter represent two important strides in the processing technology of the automotive industry. (end)

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