Market trend and technical development trend of th

Market trends and Technological Development Trends of tool systems

the mechanical industry market is supported by active investment in automotive, digital home appliances and other industries, and the demand for machine tools and related equipment is changing from weak to prosperous. At the same time, it is more urgent to reduce costs and shorten the processing cycle. Correspondingly, it is the general trend to achieve high efficiency in processing. In this process, in order to adjust high stability machining, the role of tool machine interface technology is becoming more and more important; Especially with the rapid development of the mechanical industry towards informatization, intelligence, environmental protection, energy saving, small diameter of cutting tools and so on, the function of the tool system must be improved to a new level. Based on the results of the 2004 Japanese media questionnaire, this paper introduces the recent market trends and technical development trends of the tool system industry

tool system with new functions

in order to carry out high-speed, high-precision and high-efficiency machining, the tool system, as a supplement to the function of the machine tool, must have the following characteristics: clamp the tool on the machine tool with high precision, and still maintain a high-precision clamping state in the machining process. Therefore, the tool handle is required to play the following roles: ① under the condition of high-speed machining, it has good balance performance and will not have abnormal vibration; ② Excellent rigidity, able to bear large cutting force; ③ Ensure that the cutting fluid fully reaches the cutting edge; ④ With a good interface, the tool can be installed on the spindle of the machine tool with high precision

high speed and high precision tool systems mostly adopt two-sided clamping mechanism, which has reached the practical level and has firmly occupied the market. The ISO standard HSK tool system has been formulated in December, 2001. At present, there are still some problems to be solved, among which the most important is the tool clamping system including the clamping mechanism. New products such as press fit clamping devices have been developed for the collet. The problem to be solved is how to realize the informatization and intellectualization of the tool system. At present, the focus of the industry is to develop a comprehensive tool management system as soon as possible, so that the complex tool information can realize unified management

recently, 17 cemented carbide tool factories and tool system manufacturers in Japan jointly put forward the HSK interface standard (i.e. ICTM standard) for composite machining machine tools. The HSK tool system produced according to this standard has been officially put on the market as a commodity. This standard is an open standard, which is not restricted by intellectual property rights. Manufacturers all over the world can make and sell products according to it. The standard makers hope to produce tool system products that meet the needs of users according to this standard. It is expected that Japanese manufacturers will compete fiercely with their overseas counterparts who popularize the standard

market trend in 2004

with the rapid growth of machine tool demand and the booming investment in semiconductor and it related industries, the number of production units in Japan's tool system (including fixture) industry in 2003 increased by 37.3% compared with 2002, and the sales increased by 24.9%, both of which had double-digit growth. Among them, the number of production pieces of NC tool system reached 969100, an increase of 59.6% over 2002, and the sales reached 8.431 billion yen, an increase of 37% year-on-year. Both of the growth rates were quite high. After entering 2004, the production growth is still good. From January to May 2004, the number of production units increased by 25.5% compared with the same period in 2003, and the sales increased by 42% year-on-year

Figure 1 production of NC tool system

according to the survey results, the production of tool system is in direct proportion to the development of machine tool industry. Jokho precision machinery company and MST company believe that: "the order of machine tools in 2004 increased significantly compared with 2003, and the tool system will also increase. At least by the middle of 2004, the growth momentum will not change." According to Riri, "the production and sales are in good condition, especially due to the strong demand in the automotive industry, and the prospect of the tool system industry is promising. Abroad, the demand for tool systems in Europe, the United States and Asia (especially China) all shows a strong momentum." NT tool pointed out, "with the active equipment investment in the automotive industry, the order of tools has increased significantly, and the growth momentum is developing to a high level." This trend has prompted users to increase investment. It is said that there is a considerable demand for two-sided clamping interfaces of high-speed machining machines used for more than 10000 R/min

some manufacturers are cautious in their estimation of the situation. For example, yukiwa Seiko pointed out, "although there are signs of recovery at present, the prospect is still not very clear."

cities can be divided into simple beam zigzag experiment and pure zigzag experiment. The demand of the field is harsh. First of all, we must ensure that the products have high quality. Moreover, with the increasingly urgent requirements of shortening the delivery time and reducing the cost, it is bound to lead to fierce price competition. In this process, various manufacturers have carried out a variety of marketing activities, such as expanding the sales field, developing the processing business of precision molds and their parts, breaking through the industry limitations, and realizing the diversification of production and operation

measures to reduce costs

the practice of the Institute of daily research is to concentrate the production site on one floor to achieve "zero movement" of workpieces. Yukiwa Precision Industry Co., Ltd. is to try to achieve small batch production of multiple varieties, and also try to reduce processes for large batch products, so as to reduce costs. MST's measures are to improve the fixtures, use the manipulator to realize automation, and use the compound processing machine tool to make the process intensive. The practice of dazhaohe precision machinery company is to vigorously purchase new equipment, or transform the original equipment, and shorten the processing time as far as possible, so as to achieve the purpose of reducing production costs. NT tool's measures are to improve the process, reduce the cost of rough processed products, and improve production efficiency to meet the needs of expanding overseas production. Alps tool company is: strive to achieve product versatility

at present, in terms of foreign production, Japanese tool system manufacturers that have established production bases overseas are increasing. For example, NT tool company has established a factory in Bangkok high tech Industrial Park in April, 2003 to produce tool system collets for processing center, with a monthly output of 3000 pieces. Now it is planning to expand the production scale and prepare to transfer the whole tool handle and collet products to this place for production. The company also opened an office in Shanghai, China to strengthen its sales business in Asia

improve the interchangeability of products and give full play to the investment benefits

with the miniaturization and high-quality quantification of parts, companies are vigorously developing new products to make the tool system as compact as possible and high swing accuracy, which can meet the requirements of adjusting cutting

in high-speed and high-precision machining, BT clamping mode has been used in the past. Compared with it, the advantages of two-sided clamping mode have been widely understood and recognized. However, from the perspective of users, there are still some deficiencies in the interchangeability of tool systems and the efficiency of investment. Therefore, the manufacturer is actively developing a series of products of two-sided clamping tool system according to the actual needs of the majority of users. For example, Heitian Precision Industry Co., Ltd. has developed a new type of two-sided clamping tool handle, the trade name is super BT tool system (see Figure 2), which is characterized in that the 7:24 cone and flange end face of the tool handle are in contact with the 7:24 cone end face of the machine tool spindle at the same time, and the tool is clamped from both sides. The system adopts open standards and strives to become an industry standard. The machine tool with super BT standard spindle can be equipped with super jgj75 ⑵ 003 BT tool system, which is the energy-saving design standard for residential buildings in hot summer and warm winter areas. Moreover, this system is interchangeable with the original JIS BT clamping tool handle, and the supply channel is relatively wide

Figure 2 new two-sided clamping tool system super BT system

nt tool company has developed a portable two-sided clamping high-speed BT tool handle, with the trade name of aho series tool system. This is a 7:24 taper handle interface improved on the basis of BT tool handle. It is characterized by that the handle and clamping part are made into a hollow shape, which greatly reduces the weight of the tool handle. The taper and end face can be in close contact. In addition, it is clamped from both sides, with excellent balance performance. Using aho series tool system, the processing efficiency can be increased by 20% - 50%

Zhaohe Precision Machinery Co., Ltd. produces a multi angle taper two-sided clamping system, with the trade name of big Coromant capto c5/c6 (see Figure 3). This is a tool system that the company has obtained the license of Sandvik Coromant company. This system can successfully solve the problem of high price tool handle damage due to blade collapse and other faults in turning

Fig. 3 big Coromant capto tool system

Shenghe Precision Machinery Co., Ltd. has developed a new two-sided clamping tool system, which can be used together with the original machine tool (spindle taper 7:24). The in and out error of the spindle end face can be eliminated by using the taper sleeve adjustment mechanism of the dish head spring

the press in (DF) tool system developed by Riyan Research Institute has been popularized, which is characterized by that the joint of the system and DF end milling cutter is made into a 1:100 gentle taper, and the tool is clamped by the cone and end face. The tool loading and unloading is very convenient and fast, and it only takes 10 seconds to change the tool once. The cutting force bearing limit of the system is three times that of the original tool system

to obtain high-precision machined surfaces

the important technical index of the tool system is the swing accuracy of its rotation. Equipped with a tool system with low vibration, it can not only cut high-precision machined surfaces with ball end mills, but also apply to micro machining, high-precision machining of molds and electronic parts machining. At present, some high-precision tool systems have been developed, such as the use of hot mount clamping mechanism, and the use of spring clamping tool can easily adjust the tip swing accuracy of the tool handle, and so on

Riri has also developed a precision tool system, with a swing accuracy adjustable to 0.001 ~ 0.002mm, so that it can be closely connected with the machine tool spindle. NT tool company develops an R-Zero system, which is characterized by using a fine-tuning wrench to adjust the rotary ring, and the precision of blade tip swing can be controlled within 0 ~ 2 μ Within M. MST company developed PPA tool system with multi hole collet, which is a tool system with spring collet, which is mainly used to clamp small diameter tools with handle diameter of 0.5 ~ 3.0mm. Due to the high-speed transmission mode, the minimum swing accuracy can be controlled to 3 μ m. The maximum speed can reach 50000r/min

in terms of high-speed cutting and high-efficiency machining, the tool system must have the following characteristics: good radial swing accuracy, high clamping force and rigidity. Yukiwa Seiko has developed a super super G1 clamping system (see Figure 4). The extension length of the spring collet from the body is greatly shortened, and the thickness of the collet insertion part of the body is large, so it has high rigidity. In addition, the accuracy error requirements for the tool handle body, lock nut and spring collet are extremely strict. The comprehensive radial swing accuracy of the system is up to 5 μ m. Its standard products can be used under the conditions of speed 2504) teststarini folder system parameter file (I), sensor model file (I), displacement speed calibration file 00r/min

Figure 4 super G1 tool system

in order to carry out reliable and efficient machining, we must pay attention to the tool clamping mode while paying attention to the tool machine interface. In the process of end milling, the problems of tool sliding, falling off and vibration usually occur depend on whether the tool can be clamped firmly and reliably

nt tool company has developed a new tool system ct/s for milling (see Figure 5). Its collet adopts roller locking mode. The inner side of the collet is not a traditional groove shape, but a special shape. The collet port has deep grooves, which makes the collet port very