Core Tip: In the aerospace manufacturing industry, the use of measuring tools is very common. In view of the particularity of aerospace products, what is the use of tools in aerospace manufacturing, how to use existing tools to improve processing efficiency, how can tool companies better serve the enterprise? China Metalworking Online specially invited several engineers engaged in machining to let them talk about the application of tools in aerospace manufacturing.
China's realization of astronauts' spacewalks has enabled the world to see the Chinese people's dream of conquering the moon for thousands of years. The implementation of the large aircraft project and the blue sky in 2016 will enable us to see the hope of China's establishment of a world aviation power. Become a reality. All these great achievements will be imprinted in the history of China. However, the rapid development of China's aerospace industry is inseparable from the growth of every employee engaged in the aerospace industry and the progress of the machine tool industry. The development of the aerospace industry is also a powerful testimony to the development of China's metal processing industry.
In the aerospace manufacturing industry, the application of measuring tools is very common. In view of the particularity of aerospace products, what is the use of tools in aerospace manufacturing, how to use existing tools to improve processing efficiency, how can tool companies better serve the enterprise? China Metalworking Online specially invited several engineers engaged in machining to let them talk about the application of tools in aerospace manufacturing.
The aerospace manufacturing industry has always been regarded as a high-tech industry by the public. To ensure the quality of various complex products and to use a large number of high-end tools, what is the application of the tools in this industry?
Guizhou Aerospace Wujiang Electromechanical Equipment Co., Ltd. Zhang Yufeng
Zhang Yufeng: In aerospace manufacturing, the tool is mainly used for the forming of products, especially in some difficult and difficult-to-cut materials, such as Seco's PCBN tools. In aerospace products, alloy steel with a hardness of more than 45HRC and various cast irons and cast steels are often encountered. We generally think that 45HRC is the lower processing limit commonly used by most people in the industry. If it is greater than 45HRC, there is no way to process it. However, since the selection of Seco's PCBN tools, the problem has been solved, because Seco's PCBN tools use PCBN effectively. The starting point is the reliability and rigidity of the machine mechanism. The latest PCBN thickened integral blade (3/16in) can be reliably fixed. On the standard arbor.
Another example is Sandvik Coromant's indexable milling cutter. Today's indexable insert end mills can replace traditional high speed steel or solid carbide with a small diameter end mill in a wide range. Although high-speed steel and solid carbide end mills are still the best choice for profiling with long axial depth of cut, indexable insert end mills are small for small batch sizes up to 16 mm medium axial depth. Diameter machining provides a more economical alternative. Indexable insert end mills offer several cost savings advantages. The most obvious is that they dramatically reduce tool replacement costs. Broken blades can be renewed at a very low cost, eliminating the need for regrind. Re-grinding can cause loss of tool diameter, as in milling, which means an additional finishing to meet the cost increases associated with critical size requirements, and also provides a wide range of versatility to cut costs. In many cases, simply changing the material or geometry of the insert in the same tool can be used for different workpiece material processing – allowing us to easily and economically switch from medium carbon steel to titanium or from milling To fast profiling.
In recent years, new and improved workpiece materials have been introduced smoothly.
New materials offer many advantages as well as a side that is not conducive to machining, but tool manufacturers have begun to address these issues by designing tool packages for the machining of specific sets of workpiece materials. Taking the turning tool kit as an example, we see that this tool package is usually a series of materials and chip breaker arbor and blade combinations that can effectively process all or most of the operation and conditions of the target workpiece material. Tool kits may be pre-assembled into standard products or assembled according to the requirements of common products supplied by the supplier. The advantage of the pre-assembled tool package is that its advanced cutting materials and chipbreakers are specially developed for superalloys and titanium alloys and are not recommended for other materials. In addition, this toolkit provides a complete manual of its own application and operating instructions. As demonstrated by a large number of production applications, the proper use of special tools for superalloy machining will increase tool life by approximately 100% compared to the results obtained with the best tools previously used.
AVIC Aerospace Company Huang Fang
Huang Fang: Aviation airborne products use a lot of special materials because they have to adapt to the harsh flight environment. Therefore, the choice of tool type, material grade, and cutting parameters is particularly important in the processing of our products.
(1) Turning tools The turning tools we often use are basically standard tools, and the demand for indexable carbide inserts is large.
In addition, because our CNC lathe cutters are not uniform in size, there are a number of applications for the outer width of the cutter body from 12mm, 16mm, 20mm to 25mm; common steel cutters for the boring and grooving shanks And carbide cutters with internal cooling, the diameter of the cutter bar is commonly used 6mm, 8mm, 10mm, 12mm, 16mm and 20mm, some special elongated hole parts need to lengthen the arbor; for some larger diameter sets For pipe parts, we usually need to make some non-standard boring tools by fitting the outer turning tool of 12mm tool body to the arbor with diameter of 48~60mm. For hole parts with diameter less than 6mm, if necessary, Hole, we use the carbide rod to sharpen the small file.
(2) The center tool center is mostly a common tool, but special parts are also often used to lengthen the center drill. The material of the reamer is usually high-speed tool steel and hard alloy. In the flute pattern, the straight groove is more commonly used, and the left-turn groove is often used when the workpiece state is a through hole.
The gun drilling process has the characteristics of uniformity of the aperture size and good guiding property. There is no such problem as the use of the lengthening drill to drill the hole. The remaining amount of the inner hole wall is relatively uniform, and the hole of the drilled hole has good coaxiality, and the hole is well. There is no residual iron filings, and the holes are relatively clean, which is more suitable for deep hole processing with higher precision requirements.
(3) Milling cutters: Commonly used are end milling, face milling and ball end milling cutters. Vertical milling is usually used for 12mm, 16mm and 20mm diameters. It can be used for shoulder milling, slot milling, pocket milling, etc. In the feeding mode, the folding line or the spiral lower knife method should be used, but the 12mm diameter flying knife adopts the single tooth blade. Structure, the blade wears faster, and the feed is not fast enough. When the tool diameter is not strict, we use the flying knife with a diameter of 16mm or more; the face milling is mostly a spiral face milling cutter with f 50mm or more, and the cutting edge strength is high. Good economic performance, excellent surface milling effect, suitable for flat semi-finishing and finishing; contour ball-nosed flying knives are mostly used for contouring of 3D curved surfaces. In order to reduce the cost of cutting fluid and environmental protection, we often use dry cutting inserts in the use of flying cutter blades, but the effect is not ideal, and the tool wear is more serious.
End mills: The materials of the end mills we use every day are usually made of high-speed tool steel and hard alloy. The standard tools are used directly. According to different cutting materials and processing types, the diameter, number of cutting edges and spiral of the milling cutter are selected. angle. In roughing, the first thing we consider is the removal rate of the margin. The large feed and the large depth of cut are inevitable choices. The size of the chip pocket is also critical. Therefore, when the cutters are the same diameter, the chip pockets with fewer teeth are larger. Therefore, we often use a two-toothed carbide end mill with a helix angle of 30° to 45°. In finishing, the first consideration is the machining accuracy and surface quality, so smooth and multi-tooth machining in the milling process is the primary consideration, and the large spiral has a good effect on the dispersion of the milling force at the same milling depth, so we Four- or six-tooth carbide end mills are used with a helix angle of 45° to 60°. In addition, the round nose knife is also very frequently used in machining, but the corresponding tool type is not provided in the standard tool. We only need to grind the round corner on the basis of the end mill, and the tool loss and grinding cost are high.
Boring machine for milling machine: In the use of boring tool for milling machine, the small hole is mostly made of small-edge single-edge fine-tuning fine boring tool, which has the characteristics of high adjustment precision and good dynamic balance of the tool; the large hole adopts the right angle (tilt) type rough boring tool. Double-edged boring tool and inclined fine-tuning fine boring tool, but these kinds of boring tools cannot guarantee the balance of the tool due to its structural limitation, and cannot be used for high-speed cutting; in deep hole boring, in order to avoid vibration, the rigidity of the tool High requirements, we often use modular or extended boring tools, we feel that the module's combined lengthening boring tool is better than the overall lengthening boring tool.
High-speed tools: Due to the application of high-speed machining center equipment, we also use side-mounted, spring-clamped, hydraulically clamped HSK shanks; in high-speed tools, integral high-speed milling cutters have been manufactured at the factory. Dynamic balance detection is easy to use. Therefore, we use solid carbide high-speed end mills with diameters of 8mm, 10mm, 12mm, 16mm and 20mm in daily applications. In the field of high-speed machining, we are still in the initial stage, we need experience, and we hope that the tool manufacturers can carry out the necessary technical exchanges when providing the tools.
Wu Guojun, Hongyang Factory, the ninth research institute of Aerospace Science and Industry Group
Wu Guojun: When we process titanium alloy, high-temperature alloy, tungsten infiltration, and FRP composite workpieces, we use WALTER (Walter) WSM35 and WSP45 blades. When the depth of cut is 1mm, these two blades are used. The cutting speed of the above materials can be 70~150m/min. In addition, the SECO tool is also used in the machining of difficult-to-cut workpieces. The high-tech CVD coating grade is CP200. Two types of uncoated material grade 890 are two high-hardness ultra-fine particle grade tools mainly for Ni, Co, Fe and Ti-based superalloy finishing and processing of pure titanium. It also has good results. In addition to the above two imported brand tools used in our factory difficult to process materials, we also use some of the materials used in certain materials such as Kenner, Sandvik Coromant and other imported brand tools to process high-temperature alloys, titanium alloys It has also achieved good results with difficult-to-machine materials such as FRP composites.
What are the trends in tool development for aerospace products and the means to improve the level of tool cutting technology?
Zhang Yufeng: One of the important features of modern tool development is specialization, compounding and multi-functionality, which leads to the increasingly complex tool structure and the shape becomes very specific. The numerical control machining technology that needs multi-axis linkage in aerospace products has become an indispensable means for modern tool enterprises. Due to the particularity of the tool manufacturing process, the special CNC machine tools for tool manufacturing are usually researched and developed by the tool companies themselves, and the machine tool companies cooperate to manufacture them. Therefore, the development and application of tool-specific CNC technology and equipment has become an important work content of modern tool companies. It can be seen that the scope of operation of modern tool companies begins with the research and production of special raw materials, including the development and application of surface treatment technology and special CNC technology and equipment for tool production.
The research, production and promotion services of the “three high and one special†tool products have become the focus of enterprise competition. As a result of this competition, the development of the international tool industry has become increasingly centralized.
The depth and breadth of providing comprehensive services to users is increasingly becoming an important indicator of the competitiveness of modern tool companies. In order to transfer the new product development costs and management workload to the tool suppliers in part, the foreign manufacturing industry has adopted the platform strategy widely, and the global procurement and integrated management methods have become a trend. In the procurement of tools, the goal is to shift to countries and regions with low production costs to reduce production costs and increase market competitiveness. In the tool management, the tool factory is transformed from the main tool supply to the main cutting technology, responsible for tool procurement, management and on-site service, the so-called integrated management mode. The tool company provides users with a tool that is not just a tool, but a complete solution to the problem of machining. The two basic elements of this solution are advanced tools and excellent service.
AVIC Shenyang Yang Liming Hangfa (Group) Co., Ltd. Ye Hongtao
Ye Hongtao: A number of measures are needed to improve the tool cutting level in the aviation industry. While enterprises are improving production efficiency and improving product quality, some hidden problems have gradually emerged. If the tool material and the cutting amount parameters selected in the trial processing are unreasonable, the requirements for production efficiency and surface quality cannot be met; a tool with good performance may be used in a completely wrong situation; blind use and blind purchase occur; Equipment and tooling resources are wasted and production costs are high. Therefore, it is very important to optimize the cutting parameters through the cutting test. Here, it is necessary to optimize the tool by using the cutting parameter experimental technique.
Some technicians have difficulty in drawing reasonable conclusions when selecting tools and cutting parameters due to lack of understanding of material cutting performance, tool material and tool structure performance. This requires training the relevant technicians to supplement the knowledge of the tools and improve their ability to select and use the knife. The aviation manufacturing industry should meet the urgent needs of on-site machinery manufacturing by establishing a cutting database that is of practical value and can be used as a reference by technicians and operators in selecting tools, especially substitute tools. Aviation companies must have their own metal cutting process personnel. These metal cutting technicians must be familiar with the characteristics of difficult-to-machine materials, and should have the ability to handle on-site tool problems; with tool selection, technical communication, grinding, review, etc. Comprehensive ability.
Today's domestic and foreign tool companies, especially internationally renowned companies, already have a service system that provides different solutions for different application areas. However, after all, the tool supplier can't fully understand the processing situation of the aerospace industry. Then, what kind of pre-sales and after-sales service can you provide the tool company when providing the tool to your company?
Zhang Yufeng: In terms of service, it is necessary to strengthen pre-sales and after-sales service. Before the sale, it is necessary to deepen the user's intention of the tool. Foreign tool companies are only some agencies in China. They can't answer some engineering techniques before sale. In particular, non-standard tools that enterprises need to produce can't provide services in time. They often send emails to headquarters to request support. Tool after-sales service follow-up is not timely, the tool agent only cares about the use of the tool when the service is in the enterprise, and does not serve from whether to maximize the value of the tool and the cutting parameter selection of the tool. Therefore, it is hoped that foreign tool manufacturers will strengthen their engineering and technical services during pre-sales and after-sales service, and will enable them to get better results.
Ye Hongtao: From the perspective of tool suppliers, providing an excellent system tooling solution is the key to solving cutting problems for the aerospace industry. Tool suppliers must understand the real needs of users and are not limited to selling a certain tool brand. Engineers sent by tool suppliers should not only be familiar with domestic and foreign tools, material technology and development, familiar with metal cutting technology, but also be able to handle tool problems independently; they should also be familiar with the selection of machine tools, general-purpose tools and CNC tools. Application, familiar with all kinds of CNC machine tools, can independently compile the machining process and tooling scheme, so that users can more quickly contact the world's most advanced tool technology, and at the same time get better cost-effective tool products and excellent after-sales service. Tool distributors and agents should collect the needs of users, not only to supply tools to users, but also to provide feasible tool solutions for enterprises, and to hold regular trainings to convey advanced cutting technology and high-end cutting concepts to the technical personnel of the company. Improve cutting technology for aerospace manufacturing users through effective integrated tooling technology support. This will enable the tool manufacturers to promote their advanced cutting tools, and meet the needs of the cutting technology advancement of the aviation industry, forming a good atmosphere for the aviation industry users and tool suppliers to achieve a win-win situation.
Huang Fang: Our use of tools is not very professional. We hope to get the technical support of the tool manufacturers, carry out some technical exchanges, and carry out targeted tool selection and cutting parameters to improve product quality and processing efficiency. I also hope that tool manufacturers can provide tools for tool repair and recycling of used tools to reduce our tooling costs. Secondly, I feel that tool suppliers and companies can strengthen cooperation in tool testing and trials, in materials and new tool applications. Interoperability information; in addition, we hope that the procurement cycle of non-standard tools can be more rapid and convenient.
Wu Guojun: First of all, the user values ​​the attitude of the tool manufacturer very much. When the user encounters difficulties in using the purchased tool, he especially hopes that the tool manufacturer can give a reasonable explanation. No matter how little or no tool is purchased, the tool manufacturer should be able to give a reasonable explanation. On-the-go, on-the-spot problem solving; secondly, I hope that the tool manufacturer can do the technical guidance work, and provide detailed information on the tool, such as what kind of tool is suitable for processing the material workpiece, at the same time, Give the best cutting parameters of the tool, etc.; again, when the user encounters a difficult-to-machine material workpiece, the user hopes that the tool manufacturer can better intervene in advance, together with the user, to help the user to make a reasonable selection of the tool in advance.
China's realization of astronauts' spacewalks has enabled the world to see the Chinese people's dream of conquering the moon for thousands of years. The implementation of the large aircraft project and the blue sky in 2016 will enable us to see the hope of China's establishment of a world aviation power. Become a reality. All these great achievements will be imprinted in the history of China. However, the rapid development of China's aerospace industry is inseparable from the growth of every employee engaged in the aerospace industry and the progress of the machine tool industry. The development of the aerospace industry is also a powerful testimony to the development of China's metal processing industry.
In the aerospace manufacturing industry, the application of measuring tools is very common. In view of the particularity of aerospace products, what is the use of tools in aerospace manufacturing, how to use existing tools to improve processing efficiency, how can tool companies better serve the enterprise? China Metalworking Online specially invited several engineers engaged in machining to let them talk about the application of tools in aerospace manufacturing.
The aerospace manufacturing industry has always been regarded as a high-tech industry by the public. To ensure the quality of various complex products and to use a large number of high-end tools, what is the application of the tools in this industry?
Guizhou Aerospace Wujiang Electromechanical Equipment Co., Ltd. Zhang Yufeng
Zhang Yufeng: In aerospace manufacturing, the tool is mainly used for the forming of products, especially in some difficult and difficult-to-cut materials, such as Seco's PCBN tools. In aerospace products, alloy steel with a hardness of more than 45HRC and various cast irons and cast steels are often encountered. We generally think that 45HRC is the lower processing limit commonly used by most people in the industry. If it is greater than 45HRC, there is no way to process it. However, since the selection of Seco's PCBN tools, the problem has been solved, because Seco's PCBN tools use PCBN effectively. The starting point is the reliability and rigidity of the machine mechanism. The latest PCBN thickened integral blade (3/16in) can be reliably fixed. On the standard arbor.
Another example is Sandvik Coromant's indexable milling cutter. Today's indexable insert end mills can replace traditional high speed steel or solid carbide with a small diameter end mill in a wide range. Although high-speed steel and solid carbide end mills are still the best choice for profiling with long axial depth of cut, indexable insert end mills are small for small batch sizes up to 16 mm medium axial depth. Diameter machining provides a more economical alternative. Indexable insert end mills offer several cost savings advantages. The most obvious is that they dramatically reduce tool replacement costs. Broken blades can be renewed at a very low cost, eliminating the need for regrind. Re-grinding can cause loss of tool diameter, as in milling, which means an additional finishing to meet the cost increases associated with critical size requirements, and also provides a wide range of versatility to cut costs. In many cases, simply changing the material or geometry of the insert in the same tool can be used for different workpiece material processing – allowing us to easily and economically switch from medium carbon steel to titanium or from milling To fast profiling.
In recent years, new and improved workpiece materials have been introduced smoothly.
New materials offer many advantages as well as a side that is not conducive to machining, but tool manufacturers have begun to address these issues by designing tool packages for the machining of specific sets of workpiece materials. Taking the turning tool kit as an example, we see that this tool package is usually a series of materials and chip breaker arbor and blade combinations that can effectively process all or most of the operation and conditions of the target workpiece material. Tool kits may be pre-assembled into standard products or assembled according to the requirements of common products supplied by the supplier. The advantage of the pre-assembled tool package is that its advanced cutting materials and chipbreakers are specially developed for superalloys and titanium alloys and are not recommended for other materials. In addition, this toolkit provides a complete manual of its own application and operating instructions. As demonstrated by a large number of production applications, the proper use of special tools for superalloy machining will increase tool life by approximately 100% compared to the results obtained with the best tools previously used.
AVIC Aerospace Company Huang Fang
Huang Fang: Aviation airborne products use a lot of special materials because they have to adapt to the harsh flight environment. Therefore, the choice of tool type, material grade, and cutting parameters is particularly important in the processing of our products.
(1) Turning tools The turning tools we often use are basically standard tools, and the demand for indexable carbide inserts is large.
In addition, because our CNC lathe cutters are not uniform in size, there are a number of applications for the outer width of the cutter body from 12mm, 16mm, 20mm to 25mm; common steel cutters for the boring and grooving shanks And carbide cutters with internal cooling, the diameter of the cutter bar is commonly used 6mm, 8mm, 10mm, 12mm, 16mm and 20mm, some special elongated hole parts need to lengthen the arbor; for some larger diameter sets For pipe parts, we usually need to make some non-standard boring tools by fitting the outer turning tool of 12mm tool body to the arbor with diameter of 48~60mm. For hole parts with diameter less than 6mm, if necessary, Hole, we use the carbide rod to sharpen the small file.
(2) The center tool center is mostly a common tool, but special parts are also often used to lengthen the center drill. The material of the reamer is usually high-speed tool steel and hard alloy. In the flute pattern, the straight groove is more commonly used, and the left-turn groove is often used when the workpiece state is a through hole.
The gun drilling process has the characteristics of uniformity of the aperture size and good guiding property. There is no such problem as the use of the lengthening drill to drill the hole. The remaining amount of the inner hole wall is relatively uniform, and the hole of the drilled hole has good coaxiality, and the hole is well. There is no residual iron filings, and the holes are relatively clean, which is more suitable for deep hole processing with higher precision requirements.
(3) Milling cutters: Commonly used are end milling, face milling and ball end milling cutters. Vertical milling is usually used for 12mm, 16mm and 20mm diameters. It can be used for shoulder milling, slot milling, pocket milling, etc. In the feeding mode, the folding line or the spiral lower knife method should be used, but the 12mm diameter flying knife adopts the single tooth blade. Structure, the blade wears faster, and the feed is not fast enough. When the tool diameter is not strict, we use the flying knife with a diameter of 16mm or more; the face milling is mostly a spiral face milling cutter with f 50mm or more, and the cutting edge strength is high. Good economic performance, excellent surface milling effect, suitable for flat semi-finishing and finishing; contour ball-nosed flying knives are mostly used for contouring of 3D curved surfaces. In order to reduce the cost of cutting fluid and environmental protection, we often use dry cutting inserts in the use of flying cutter blades, but the effect is not ideal, and the tool wear is more serious.
End mills: The materials of the end mills we use every day are usually made of high-speed tool steel and hard alloy. The standard tools are used directly. According to different cutting materials and processing types, the diameter, number of cutting edges and spiral of the milling cutter are selected. angle. In roughing, the first thing we consider is the removal rate of the margin. The large feed and the large depth of cut are inevitable choices. The size of the chip pocket is also critical. Therefore, when the cutters are the same diameter, the chip pockets with fewer teeth are larger. Therefore, we often use a two-toothed carbide end mill with a helix angle of 30° to 45°. In finishing, the first consideration is the machining accuracy and surface quality, so smooth and multi-tooth machining in the milling process is the primary consideration, and the large spiral has a good effect on the dispersion of the milling force at the same milling depth, so we Four- or six-tooth carbide end mills are used with a helix angle of 45° to 60°. In addition, the round nose knife is also very frequently used in machining, but the corresponding tool type is not provided in the standard tool. We only need to grind the round corner on the basis of the end mill, and the tool loss and grinding cost are high.
Boring machine for milling machine: In the use of boring tool for milling machine, the small hole is mostly made of small-edge single-edge fine-tuning fine boring tool, which has the characteristics of high adjustment precision and good dynamic balance of the tool; the large hole adopts the right angle (tilt) type rough boring tool. Double-edged boring tool and inclined fine-tuning fine boring tool, but these kinds of boring tools cannot guarantee the balance of the tool due to its structural limitation, and cannot be used for high-speed cutting; in deep hole boring, in order to avoid vibration, the rigidity of the tool High requirements, we often use modular or extended boring tools, we feel that the module's combined lengthening boring tool is better than the overall lengthening boring tool.
High-speed tools: Due to the application of high-speed machining center equipment, we also use side-mounted, spring-clamped, hydraulically clamped HSK shanks; in high-speed tools, integral high-speed milling cutters have been manufactured at the factory. Dynamic balance detection is easy to use. Therefore, we use solid carbide high-speed end mills with diameters of 8mm, 10mm, 12mm, 16mm and 20mm in daily applications. In the field of high-speed machining, we are still in the initial stage, we need experience, and we hope that the tool manufacturers can carry out the necessary technical exchanges when providing the tools.
Wu Guojun, Hongyang Factory, the ninth research institute of Aerospace Science and Industry Group
Wu Guojun: When we process titanium alloy, high-temperature alloy, tungsten infiltration, and FRP composite workpieces, we use WALTER (Walter) WSM35 and WSP45 blades. When the depth of cut is 1mm, these two blades are used. The cutting speed of the above materials can be 70~150m/min. In addition, the SECO tool is also used in the machining of difficult-to-cut workpieces. The high-tech CVD coating grade is CP200. Two types of uncoated material grade 890 are two high-hardness ultra-fine particle grade tools mainly for Ni, Co, Fe and Ti-based superalloy finishing and processing of pure titanium. It also has good results. In addition to the above two imported brand tools used in our factory difficult to process materials, we also use some of the materials used in certain materials such as Kenner, Sandvik Coromant and other imported brand tools to process high-temperature alloys, titanium alloys It has also achieved good results with difficult-to-machine materials such as FRP composites.
What are the trends in tool development for aerospace products and the means to improve the level of tool cutting technology?
Zhang Yufeng: One of the important features of modern tool development is specialization, compounding and multi-functionality, which leads to the increasingly complex tool structure and the shape becomes very specific. The numerical control machining technology that needs multi-axis linkage in aerospace products has become an indispensable means for modern tool enterprises. Due to the particularity of the tool manufacturing process, the special CNC machine tools for tool manufacturing are usually researched and developed by the tool companies themselves, and the machine tool companies cooperate to manufacture them. Therefore, the development and application of tool-specific CNC technology and equipment has become an important work content of modern tool companies. It can be seen that the scope of operation of modern tool companies begins with the research and production of special raw materials, including the development and application of surface treatment technology and special CNC technology and equipment for tool production.
The research, production and promotion services of the “three high and one special†tool products have become the focus of enterprise competition. As a result of this competition, the development of the international tool industry has become increasingly centralized.
The depth and breadth of providing comprehensive services to users is increasingly becoming an important indicator of the competitiveness of modern tool companies. In order to transfer the new product development costs and management workload to the tool suppliers in part, the foreign manufacturing industry has adopted the platform strategy widely, and the global procurement and integrated management methods have become a trend. In the procurement of tools, the goal is to shift to countries and regions with low production costs to reduce production costs and increase market competitiveness. In the tool management, the tool factory is transformed from the main tool supply to the main cutting technology, responsible for tool procurement, management and on-site service, the so-called integrated management mode. The tool company provides users with a tool that is not just a tool, but a complete solution to the problem of machining. The two basic elements of this solution are advanced tools and excellent service.
AVIC Shenyang Yang Liming Hangfa (Group) Co., Ltd. Ye Hongtao
Ye Hongtao: A number of measures are needed to improve the tool cutting level in the aviation industry. While enterprises are improving production efficiency and improving product quality, some hidden problems have gradually emerged. If the tool material and the cutting amount parameters selected in the trial processing are unreasonable, the requirements for production efficiency and surface quality cannot be met; a tool with good performance may be used in a completely wrong situation; blind use and blind purchase occur; Equipment and tooling resources are wasted and production costs are high. Therefore, it is very important to optimize the cutting parameters through the cutting test. Here, it is necessary to optimize the tool by using the cutting parameter experimental technique.
Some technicians have difficulty in drawing reasonable conclusions when selecting tools and cutting parameters due to lack of understanding of material cutting performance, tool material and tool structure performance. This requires training the relevant technicians to supplement the knowledge of the tools and improve their ability to select and use the knife. The aviation manufacturing industry should meet the urgent needs of on-site machinery manufacturing by establishing a cutting database that is of practical value and can be used as a reference by technicians and operators in selecting tools, especially substitute tools. Aviation companies must have their own metal cutting process personnel. These metal cutting technicians must be familiar with the characteristics of difficult-to-machine materials, and should have the ability to handle on-site tool problems; with tool selection, technical communication, grinding, review, etc. Comprehensive ability.
Today's domestic and foreign tool companies, especially internationally renowned companies, already have a service system that provides different solutions for different application areas. However, after all, the tool supplier can't fully understand the processing situation of the aerospace industry. Then, what kind of pre-sales and after-sales service can you provide the tool company when providing the tool to your company?
Zhang Yufeng: In terms of service, it is necessary to strengthen pre-sales and after-sales service. Before the sale, it is necessary to deepen the user's intention of the tool. Foreign tool companies are only some agencies in China. They can't answer some engineering techniques before sale. In particular, non-standard tools that enterprises need to produce can't provide services in time. They often send emails to headquarters to request support. Tool after-sales service follow-up is not timely, the tool agent only cares about the use of the tool when the service is in the enterprise, and does not serve from whether to maximize the value of the tool and the cutting parameter selection of the tool. Therefore, it is hoped that foreign tool manufacturers will strengthen their engineering and technical services during pre-sales and after-sales service, and will enable them to get better results.
Ye Hongtao: From the perspective of tool suppliers, providing an excellent system tooling solution is the key to solving cutting problems for the aerospace industry. Tool suppliers must understand the real needs of users and are not limited to selling a certain tool brand. Engineers sent by tool suppliers should not only be familiar with domestic and foreign tools, material technology and development, familiar with metal cutting technology, but also be able to handle tool problems independently; they should also be familiar with the selection of machine tools, general-purpose tools and CNC tools. Application, familiar with all kinds of CNC machine tools, can independently compile the machining process and tooling scheme, so that users can more quickly contact the world's most advanced tool technology, and at the same time get better cost-effective tool products and excellent after-sales service. Tool distributors and agents should collect the needs of users, not only to supply tools to users, but also to provide feasible tool solutions for enterprises, and to hold regular trainings to convey advanced cutting technology and high-end cutting concepts to the technical personnel of the company. Improve cutting technology for aerospace manufacturing users through effective integrated tooling technology support. This will enable the tool manufacturers to promote their advanced cutting tools, and meet the needs of the cutting technology advancement of the aviation industry, forming a good atmosphere for the aviation industry users and tool suppliers to achieve a win-win situation.
Huang Fang: Our use of tools is not very professional. We hope to get the technical support of the tool manufacturers, carry out some technical exchanges, and carry out targeted tool selection and cutting parameters to improve product quality and processing efficiency. I also hope that tool manufacturers can provide tools for tool repair and recycling of used tools to reduce our tooling costs. Secondly, I feel that tool suppliers and companies can strengthen cooperation in tool testing and trials, in materials and new tool applications. Interoperability information; in addition, we hope that the procurement cycle of non-standard tools can be more rapid and convenient.
Wu Guojun: First of all, the user values ​​the attitude of the tool manufacturer very much. When the user encounters difficulties in using the purchased tool, he especially hopes that the tool manufacturer can give a reasonable explanation. No matter how little or no tool is purchased, the tool manufacturer should be able to give a reasonable explanation. On-the-go, on-the-spot problem solving; secondly, I hope that the tool manufacturer can do the technical guidance work, and provide detailed information on the tool, such as what kind of tool is suitable for processing the material workpiece, at the same time, Give the best cutting parameters of the tool, etc.; again, when the user encounters a difficult-to-machine material workpiece, the user hopes that the tool manufacturer can better intervene in advance, together with the user, to help the user to make a reasonable selection of the tool in advance.
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Ruian Chaoyang Standard Parts Co., Ltd. , https://www.cybzj.com