Demolition Hammer,Cordless Demolition Hammer,Demolition Hammer Drill,Electric Demolition Hammer ZHENGYANG TECHNOLOGY CO.,LTD , https://www.supraone.com
The tool manufacturer mainly produces and processes the surface, inner hole and other parts of the engine block, cylinder head, camshaft and other accessories, so that these parts meet the accuracy requirements and installation and fitting requirements, from the dimensional accuracy, position accuracy and shape of each part of the cylinder head. In terms of accuracy and finish requirements, most of the faces and holes are not required, and can be realized by conventional milling, drilling, boring, dumpling and tapping methods. However, there are four difficulties. The camshaft aperture and the valve seat conduit are required to have high precision. It is difficult to ensure the requirements by conventional machining methods. The joint surface of the cylinder is required to have a high flatness and a large area, which is also difficult. To meet the requirements of modern processing and efficient production, it is also necessary to have corresponding solutions. (Zhengzhou Bote has devoted itself to the R&D and production of auto parts processing knives, and has obtained more than 30 patented products, becoming a leader in the domestic tool market)
Difficulties in the processing of the cylinder joint surface:
The flatness of this surface is relatively high, generally 0.05 mm, and the profile is large. Taking a 1.0 L small displacement cylinder as an example, the shape is also 155 mm × 430 mm. If split milling is used, there will be a knife mark; if a knife passes, the diameter of the milling cutter disc needs at least 200 mm, and only the mass of the milling cutter disc is 10 kg. At the same time, the shank matching with such a milling cutter must also be relatively large, and the HSK-A100 has a shank of 7 kg. Such tool quality, on the one hand, greatly limits the improvement of milling cutting speed for the currently popular aluminum alloy cylinder head, which seriously affects the production efficiency. For the larger displacement cylinder head, the tool change system of the machining center is also a test, and even a large-scale machine tool can be used to solve the reliable tool change and the spindle gripper. Solution: Now you can use aluminum alloy milling cutters. The milling cutters carried by the milling cutters use the super-hard material cutter (CBN) to greatly improve the machining process. For the machining of aluminum cylinder heads, tool weight reduction makes it possible to use more efficient tool materials.
Difficulties in machining the cylinder head end face:
For the alloy cast iron cylinder block and cylinder head, the blank margin is large, and the local cutting performance of different seasons and batch blanks varies greatly. There are many oblique holes, deep holes and high-precision holes, and the top and bottom milling areas are large and the finish requirements are high. Difficulties are also an important processing difficulty for tool manufacturers.
Solution: Zhengzhou Bote tool has been deeply researched and developed. The SNGN series PCBN integral sintering blade is made of BTS2800 cubic boron nitride sintered by high temperature and high pressure. It has strong cutting performance and is comparable with diamond tool to improve processing beat. Doubled and reduced processing costs, successfully replaced ceramic inserts.
Automotive brake disc processing solutions
In the past, the brake disc processing of the automobile uses many ceramic tools and coated tools. Although the machining task can be completed, the processing time and processing cost are high, and it is necessary to purchase a large number of tools to bring to the automobile manufacturing enterprise. A higher cost. With the development of tool materials, the new super-hard material, cubic boron nitride, is second only to diamond hardness. The blade is sintered by high temperature and high pressure. It has high cutting performance and long service life and wear resistance. Multiple cutting edge indexable CBN inserts help users reduce the number of tool changes and reduce production costs. It is a cost-effective brake disc cutter. In the cutting process of the roll and brake disc workpiece, due to the high hardness of the workpiece itself, the structure is complex and the processing conditions are relatively harsh, the performance and quality of the tool directly affect the processing efficiency, processing precision and processing quality. High cutting rate and high efficiency cutting can be achieved by using PCBN integral blade or PCBN composite blade. SNMN160812 model PCBN integral sintered blade is sintered with BTS7800 grade material. The cutting edge is 16mm, the blade thickness is 8mm, and the radius of the tool tip is 1.2mm. This blade is a national standard type blade. It can also be customized according to the actual needs of users. When machining the brake disc with the CBN insert, if the machine is rigid, the cutting speed is low, and the cutting parameters of the insert are different for different machining requirements. PCBN composite blades can be processed intermittently. The finishing allowance of the finishing car is generally about 0.3mm, which can improve the dimensional accuracy and reduce the thermal deformation of the workpiece before quenching as much as possible to ensure uniform cutting allowance and prolong the service life of the PCBN tool. The finishing car generally does not use cutting fluid, because at higher cutting speeds, a large amount of cutting heat is carried away by the chips, and rarely stays on the surface of the workpiece to affect the quality and precision of the machined surface. Brake discs processed by Zhengzhou Bot CBN inserts have high surface quality, exquisite appearance and better performance. However, users who have purchased a car need to pay attention to regular maintenance, because the material of the brake disc is mostly cast iron, and it is exposed for a long time, and the working environment is relatively bad. If the vehicle is parked for a long time, or when it is in a damp environment, some rust will be generated on the surface of the brake disc. These rust will affect the brake system more or less. Therefore, we must remove it in time to achieve regular maintenance. In this way, our car can better serve us and provide high-quality CBN tools for automobile manufacturers. It is our responsibility. Zhengzhou Bote Cubic Boron Nitride Tool Series consists of PCBN integral sintered type, PCBN integrated composite type and PCBN welded type. With mature manufacturing technology and complete management method, imported precision equipment is used to produce a first-class cube. Boron nitride series tools are comparable to foreign products. PCBN tools are particularly suitable for hard cutting of all kinds of ferrous metals. Not only improve the processing efficiency, but also greatly reduce the processing cost, mainly cutting all kinds of hardened steel, tool steel, die steel, bearing just (HRC45-70), chilled cast iron, high chromium cast iron, Ni-based and CO-based high temperature Alloys, various difficult-to-machine gray cast irons, and other difficult-to-machine black materials.
Automotive gearbox gear machining solutions
The machining process of automotive gearbox gears is mainly divided into soft tooth surface machining and hard tooth surface machining. Soft tooth surface processing generally adopts hobbing→shaving→heat treatment process, and hard tooth surface processing adopts hobbing→heat treatment (carburizing)→grinding process. At present, in order to meet the requirements of high-efficiency, high-precision and high-stability processing of automotive gearbox gears, in 2004, Zhengzhou Bote launched the PCBN integral sintered blade, which was successfully applied to the intermittent processing of the large gear hard tooth surface (HRC62). In order to replace the grinding process by turning, the machining efficiency is greatly improved. In addition, Bot has a new breakthrough in the end face of the automobile gear carburizing and quenching, the inner hole, the taper surface finishing of the synchronous meshing gear, and the hard cut of the gear shaft. The developed double-sided composite blade of PCBN has successfully moved in this field and is a gear processing tool with high technical level. CBN blade material developed by Zhengzhou Bote Superhard Tool Co., Ltd. BTS7600BTS7800, BTS2800BT6000 and other grades of cubic boron nitride inserts are widely used in HRC50-HRC79 gear carburizing and quenching, cast iron brake disc, air conditioning refrigeration pre-shrinking machine and other industries, solved Ceramic blade precision car gear carburizing and quenching parts have low efficiency and high cost. It is difficult to guarantee the accuracy of the precision precision of the chip precision car, and the CBN blade has high durability. Most of the process is normal wear and tear, and there is chipping and chipping. The phenomenon is less, and the high hardness quenching parts between turning, milling, boring and grooving finishing HRC45-HRC68 make a big difference.
Crankshaft machining solution
In the machining of crankshafts, camshafts and drive shafts in the automotive industry, the machining problems of hardened workpieces are often encountered. Due to the high hardness, it is difficult to use ordinary blades, which requires a large number of blades, and the durability is not high. The shape of the crankshaft is complex. According to its application, there are many kinds of cranks, four turns, six turns, eight turns, etc. Due to its poor rigidity and high processing difficulty, the crankshaft is difficult to meet the accuracy requirements, and it is also due to the cutting process. Due to the stress of the machine tool torque and the cutting force, the crankshaft will be deformed by bending and twisting. For this difficult-to-machine workpiece, the PCBN single-sided composite blade developed by Zhengzhou Bot Company can efficiently process the crankshaft hole to achieve rough and fine, and has high stability and dimensional accuracy. The shape of the CBN blade for processing the workpiece is an equilateral triangle, and the center has a hole clamped on the arbor. The CBN is sintered integrally with the cemented carbide, and has the advantages of two materials, and the processing task is completed with high efficiency and high precision. TNGA160404-F model CBN compound blade is one of the representative products of our company. The cutting edge length is 16.5mm, the inscribed circle diameter is 9.525mm, the center hole diameter is 3.81mm, the blade thickness is 4.76mm, and the tool nose arc radius is 0.4mm. In addition, the radius of the tool nose arc can also be 0.8mm, 1.2mm, according to the user's needs to choose the blade specifications.
In recent years, as engine block and cylinder head milling have grown to higher milling speeds, carbide tools and ceramic tools have been difficult to meet the application requirements, especially when the milling speed reaches 5000 m/min or more. The two cutting materials, polycrystalline diamond (PCD) and polycrystalline cubic boron nitride (PCBN), stand out in high-efficiency cutting performance and play an important role in high-speed heavy-duty cutting. Whether it is the production of a complete set of parts or the processing of a workpiece part, the user hopes to obtain not only a more economical and efficient solution, but also a perfect and excellent after-sales service for the manufacturer. Any problems encountered by the customer during the use of the CBN insert are encountered. , have the right to consult the manufacturer, Zhengzhou Bote will do their best to help users solve the problem.
Super-hard material tool processing automotive parts is even better
Abstract For the processing of auto parts, a variety of material tools can be selected, such as ceramic tools, superhard tools, coated tools, etc., but in the fierce market competition, various materials tools are also facing the trend of survival of the fittest. From the current market, superhard knives fit the modern...
For the processing of automotive parts, a variety of material tools can be selected, such as ceramic tools, superhard tools, coated tools, etc., but in the highly competitive market environment, various material tools are also facing the trend of survival of the fittest, from At present, super-hard tools meet the development direction of modern manufacturing industry and comply with the national requirements for green environmental protection policies. Especially with the continuous improvement of modern machining levels, domestic customers need advanced processing equipment and high-end cutting tools. This is a great opportunity for superhard tools. The advantages of superhard tools in 'increasing efficiency and reducing costs' have been confirmed by more and more users. The following is an introduction to Bot's superhard tools in the hard parts of engine cylinder heads, gears, crankshafts and other components.