Mold development trend puts special requirements on mold processing equipment
1. The increasing size of mold-forming parts and the high productivity of parts require multiple cavities, resulting in larger and larger molds. Large-scale molds with large tonnage can reach 100 tons, and a few hundred cavities and thousands of cavities require mold processing equipment. Large workbench, increase Y-axis Z-axis travel, large load-bearing, high rigidity, high consistency.
2. The mold steel material processed by the mold has high hardness, and the mold processing equipment is required to have thermal stability and high reliability.
3. For complex cavity and multi-functional composite molds, with the complexity of the shape of the workpiece, it is necessary to improve the design and manufacture level of the mold. A variety of grooves and materials are formed or assembled into a set of molds. Functional composite molds require a large amount of machining programming procedures, high cutting depth and high stability, and high processing difficulty.
4. The refinement of mold processing makes the compounding and high efficiency of processing equipment more attractive. High-speed milling has many advantages such as high-hardness materials that can be processed, smooth processing, small cutting force, and small temperature rise and deformation of the workpiece, which makes mold companies pay more and more attention to high-speed machining.
5. High dynamic accuracy. The static performance introduced by the machine tool manufacturer (such as repeat positioning accuracy and linear feed rate) does not reflect the actual machining situation when the mold is three-dimensionally machined. The high-precision machining of the three-dimensional surface of the mold also requires high dynamic precision performance, and high-speed and high-precision can be realized only by matching the high rigidity, thermal stability, high reliability and high-quality control system of the machine tool.
6. The combination of processing technology and green product technology will be taken into account when purchasing equipment. The radiation and medium selection of electric processing machine tools will be the factors of safety and environmental protection. EDM milling technology will be developed in the future mold processing field.
7. The composite application of various measurement technologies, high-speed measurement and reverse engineering have become the development direction of promoting mold participation in product development and design technology.
With the continuous development of CMM, scanner and laser tracker technology, “online measurement†makes the measuring machine “toolingâ€, which requires more adaptability, and the detection technology is high speed, high precision and high. Adaptability. The main function of the CMM mainframe is to collect coordinate data through contactless or laser scanning and other non-contact methods. After data processing, the reconstructed workpiece is completed. Modern measurement technology is continuously integrated into product research and development. Under the system of reverse engineering design and manufacturing, the inseparable relationship between mold and mold parts design and manufacture is more obvious. Luo Baihui said that today's mold enterprises take the mold as the carrier and actively explore the production of mold parts, which is an important production method. The demand for mold parts and equipment is strong. In 2007, China produced 173,000 molding equipment, including 3000 CNC molding equipment; 3,844 imported forging stamping equipment and 4,671 other molding equipment.
It is understood that the current world sales of cutting tools exceeds 10 billion US dollars, and the industrially developed markets of Europe, North America, Japan and Australia account for 75%-80%. In Asia, China is also an important market. In the current manufacturing industry in developed countries, cemented carbide tools have accounted for more than 70%, and the share of traditional high-speed steel tools has fallen below 30%. In China's machinery manufacturing industry, which is engaged in global competition, the pursuit of efficiency is also increasing. The demand for high-efficiency, high-efficiency, high-reliability, and special-purpose modern high-efficiency tools is becoming more and more urgent. Carbide tools and ceramic tools are widely used in mold companies. According to Luo Baihui, China's tooling demand is more than 8 billion yuan. Among them, high-precision, high-efficiency and high-reliability modern tools, such as hard alloys and ceramics, can be used for indexing tools of about 1.5 billion yuan. In the renminbi, 80%-85% is imported, and more than 90% of tool imports are used in mold making. The complexity and precision of the molds require the quality of the cutting tools required. Many foreign famous tool manufacturers such as Sweden SANDVIK, Seco Tools SECO, Lanzhi, SPINNER, and NIKKEN Etc., Japan's DIJET, BIG, OSG, Japan Sumitomo Electric.
The high-speed and high-hardness tool newly developed by Hitachi Tools can be processed to the hardness of HRC70, and the Toshiba Tailuo's fist product - TAC fast milling cutter series. Shanghai Tooling and Cutting Tool Factory, Guilin Guanglu Digital Measurement and Control Co., Ltd. and Zhuzhou Diamond Cutting Tool Co., Ltd., well-known enterprises of China's cutting tools and measuring instruments, also provided newly developed products and participated in international competition. This year's China International Model Exhibition is a major test of high-precision manufacturing tools.
The CAD/CAE/CAM technology of molds is changing with each passing day. The informationization of mold enterprises improves the comprehensive competitiveness from the four fields of design, process, manufacturing and management. Luo Baihui said that mold CAD/CAE/CAM has developed into a relatively mature common technology, and the price of hardware and software has also dropped to the level that is generally acceptable to SMEs, coupled with the popularity and application of microcomputers and the software of microcomputer software. With the launch, the conditions for popularizing CAD/CAM in the mold industry have matured, and there will be rapid development in the future. The integration of mold CAD/CAE/CAM and the pleasant, integrated, intelligent and networked software will be the future development direction. With the continuous high-speed development of China's mold industry, mold companies have realized the necessity, importance and urgency of digital and information-based manufacturing in the process of self-development. The information management of the whole process of mold manufacturing has already mentioned the current agenda. . In order to better promote the informatization work of mold enterprises and improve the comprehensive competitiveness of enterprises, mold software manufacturers at home and abroad study the problems encountered by mold enterprises in informationization, guide enterprises to build management enterprises according to modern enterprise standards, and design according to advanced manufacturing concepts. Manufacturing mold products, and gradually realize information management has become the development direction, with PLM, PDM, ERP, CAPP management as the platform, CAD, CAE, CAM, PLM, PDM, CAPP and other mold manufacturing from design, process, manufacturing, management four major The field is synergistic and comprehensive, ensuring digital manufacturing and enterprise innovation capabilities for mold companies. At present, mold companies have many forms of digital manufacturing and information management, each with its own adaptation targets and solutions.
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