When the complete machining tasks for pipes and bars are completed at the time of one-off clamping, or when processing castings, forgings or stampings with a diameter of not more than 60mm and a length of 650mm or less, multi-axis machining machines have the highest Various other types of cutting machine production capacity, processing accuracy and the shortest production hours. To make full use of the advantages of this machine tool, there should be a large production volume. At least 50,000 pieces of the same type or the same series of parts, or at least 250,000 pieces of the single type of parts.
KE-D multi-axis machining machine can process parts with length between 50 and 650mm without adjusting the fixture to complete all the processing of the workpiece; or complete the processing of workpieces of different lengths and similar shapes.
In the past few years, some new technologies in the field of cutting processing have been widely used, and some trends will also change. Eubama is an expert in multi-axis machining technology. It always believes that multi-axis machining technology can provide the highest machining accuracy and productivity. There is only one prerequisite for achieving these "highest": large enough batches; or that there are a sufficient number of parts to be processed. Because no other cutting machine now has such high productivity as a multi-axis machine. In a production cycle of a machine tool, 26 spindles are processed at the same time. This is what a multi-axis machining machine can do, and many people are constantly experimenting with it. When using pipe processing, the cost of material preparation is significantly reduced. It not only reduces the raw material costs of parts, but also provides the prerequisite for unattended automatic production and processing.
These characteristics are the difference between a multi-axis machine tool with a maximum diameter of 60 mm and a length of 650 mm produced by the Eubama company and similar machines produced by other manufacturers. Figure 1 shows some of the parts produced by the machine tool. Before choosing to use a multi-axis machining machine, you must first understand the basic prerequisites for using this machining solution. Different from traditional turning and milling machine tools or machining centers, the production cycle of multi-axis machining machines is not determined by the sum of parts' steps and processing time. On the contrary, the production cycle of multi-axis machining machines depends on the longest time in part processing. One of the processing steps. According to the specific configuration scheme of the multi-axis processing machine tool, Eubama called it a rotary drum-type fixture multi-axis machining tool fixture can clamp 13 parts to be machined at one time; in what they call the turret type rotary fixture multi-axis In machining machines, 16 parts can be mounted and these parts can be machined in a single working cycle. In this way, in the mass production process, there is hardly a single competitor to compete with each individual part with low work hours. From an economical calculation point of view, it must be emphasized that compared to the use of a flexible turning and milling compound machining center, a multi-axis machining tool has only a plurality of specifications of the same type of parts, and when each batch is larger than 50,000 pieces, the single-type part is When the number is greater than 250,000, it is economically reasonable. The rational use of pipes, unattended work shifts, automated loading equipment, and automated feeding of single workpieces all play an important role in improving the productivity of multi-axis machine tools.
Figure 1 Parts that can be machined on multi-axis machining
Based on the geometry and shape of the parts, the advantages of the multi-axis machining program are that the parts are all machined in a single setup, compared to the sequential automated production line solutions. In addition to omitting the mounting time of the part between the fixtures, the movement time of the machining tool from one station to another is also greatly reduced, and these all play an important role in improving efficiency and yield.
Using a variety of cutting technology
Look at turning and milling complex machining centers, machining centers and automatic processing lines, which have certain comparability in the processing of tapered workpieces. The use of a lathe or a multi-axis automatic lathe is the most suitable and most meaningful when machining a symmetrical rotary body. However, compared with this processing technology, multi-axis machining tools can fully demonstrate their advantages and advantages in terms of cutting processing, workpiece shape complexity, loading and unloading, and process technology.
Fig. 2 The S-6 series multi-axis machine tool can perform three-azimuth machining of complex workpieces in a single setup, equipped with 12 horizontal feeds and 3 vertical feeds.
In the complete machining of a symmetrical rotary body part and conical part, a variety of rotary drum fixtures or multi-axis machine tools for vertical turret fixtures are available. According to the control system, machining unit and loading and unloading device of the selected machine tool, all machining processes with diameters up to 60mm and lengths up to 650mm can be completed on a multi-axis machining machine. According to the different procedures of the machine configuration, they are suitable for the processing of parts from small batches to large batches.
Increase, decrease and supplement the machine configuration at any time
In terms of Eucama's machine design solutions, multi-axis machine tools are not special machines. It can guarantee the production and processing of different types and different batches through the adjustment of the machine tool and the control system of the processing unit like a universal universal machine tool. The specific machining plan for each part is based on modular system integration, and the machine's modules can be adjusted at any time based on changes in production tasks.
The multi-axis machine tools S-6 and S-8 developed and produced by Eubama are the only automatic machine tools that can process the full length of the workpiece (see Figure 1). The high-speed molding turning or groove unit (see Fig. 2) can produce a very high surface quality, has a strong cutting power, and can use strong turning. The advantage of this kind of equipment is that the outer contour of the workpiece to be machined is exposed. After the clamping, all the surfaces that need to be machined can be machined, so that all the machining of the workpiece can be completed in one clamping. In this way, the use of adjustment tools in the machining of pipe parts enables the multi-axis machine tool to achieve the highest production efficiency.
Up to 18 processing units
The ability to complete the entire machining process of a part in one setup is a common feature of both machines (see Figure 3). A set of three-azimuth machining tool units is available to help the machine achieve this function: 15 horizontal machining tool units and 3 vertical machining tool units. With the help of these cutter units, the S-6 multi-axis machine can machine workpieces up to 49 mm in diameter and up to 45 mm in length. The S-6 multi-axis machine tool is equipped with a CNC system and is equipped with a movable tool unit bracket, which is a special solution for "series" machining of similar parts. On the other hand, the S-8 multi-axis machine mainly concentrates on processing all parts with diameters up to 18 mm and lengths up to 150 mm. Between the loading and unloading stations of the S-8 multi-axis machining machine, the S-8 machine uses mechanical beat control. The productivity of up to 96 beats per minute makes the S-8 multi-axis machine the most productive and fastest machine in this type of machine. At the 2008 AMB International Metal Processing and Processing Exhibition, Eubaba demonstrated their new S-8 solution: it can machine a pair of parts at the same time. In this S-8 multi-axis machine tool, a pair of different parts or two parts with the same shape and different materials can be machined in one production cycle.
Fig. 3 The use of different tool drive units can complete the groove, threading or knurling process of the part and can complete all parts processing between the two feedings.
16-station turret type multi-axis machine tool
There are 16 clamping stations and 26 machining tool units in the S-20 multi-axis machine tool (see Figure 4). This is a powerful rotary turret multi-axis machine tool that can not only produce symmetrical rotary workpieces, but also can produce tapered workpieces of different shapes. Thanks to its sturdy machine construction, this S-20 multi-axis machine is capable of powerfully cutting workpieces up to 60 mm in diameter and up to 320 mm in length. Its processing performance and workpiece fixture can be designed and manufactured according to the actual situation of the workpiece being processed. When determining the fixture structure of the machine tool, the user can choose between different types of chucks, spring chucks, centering chucks and wedge gear chucks.
Fig. 4 The S-20 multi-axis machine tool has 16 clamping stations and 26 tool units. It is a powerful cutting turret type fixture multi-axis machine tool.
Its good stability makes it very suitable for mass production and processing
Compared with other turret jigs, the S-20 multi-axis machine tool does not require secondary clamping in the five azimuths of the workpiece. In other words, the workpiece can be machined in the five orientations of the top, bottom, left, right, front, and back of the workpiece at the current clamping station of the workpiece. This can save the auxiliary time of the workpiece two or more clamping, and greatly improve the processing accuracy of the workpiece. Together with the process of converting and clamping, it is possible to complete 6-azimuth omni-directional machining on the S-20 multi-axis machine tool. Therefore, this multi-axis machining tool is the best alternative to CNC machining in mass production. For a long time, the machining of workpieces in 5 orientations has been a "patent" of CNC machining centers. This multi-axis machining machine also has other advantages that CNC machine tools do not have: a flexible S-20 multi-axis CNC machining unit. (See Fig. 4) Using this flexible NC machining unit, the hole machining at the specified coordinate point can be completed according to the trajectory control method, such as the milling process for milling the round groove, flat milling, keyway milling, grooving and spiral trajectory control.
The positioning of the S- 20 multi-axis machine tool in the turret fixture is based on its cutting performance, especially its milling performance, making it the top processing equipment in this type of machine tool. High cutting efficiency, precise machining quality, improved tool durability, economical cutting speeds, and robust and stable machine guides all give strong support to the machining performance of the machine, even those that are difficult to machine. The raw materials can also be easily machined on the S-20 multi-axis machine tool.
In terms of the raw materials consumed for processing workpieces, today is of even greater importance. And this important significance does not involve how much material is consumed in the production process. With the rise in the price of metal materials, many of today's workpieces are no longer turned with solid materials. On the contrary, more and more cold-rolled or cold-extruded profiles (pipes) are finally processed by multi-axis machining. This trend is related to the increasing use of high-performance metal materials and the current rising prices of metal materials. For example, when the number of conventional turning parts exceeds 500,000, more and more forging blanks are used when the machining allowance of the workpiece shape is large, and the purpose is to reduce the total amount of metal shavings.
Future Trends
Eubama showed its machine tools for flexibility and powerful machining solutions at the 2007 EMO European Machine Tool Show and has adjusted its operating policy to this new requirement. Machining is the main application area of ​​various multi-axis machining tools developed and designed by Eucama.
After taking over the Kneissller company in 1977, Euabama successfully launched two S-20 series innovative turret fixtures for machining castings, forgings and cold extrusions on the basis of its KE series machines. Axis machine tools. Moreover, their S-6 and S-8 rotary drum-type fixtures with multi-axis machines are equipped with eye-catching workpiece loading and unloading mechanisms, thereby satisfying the premise of single-part automatic processing.
Fig. 5 Minibama rotary clamp automatic lathe is a kind of processing equipment for the production of complex workpieces. It can turn the contour shape and dimensions of the parts very accurately. The diameter of the workpiece can be processed up to 16mm and the length up to 50mm.
For the first time, the Minibama (see Figure 5) multi-axis machine tool that was first publicly displayed at the 2007 EMO European Machine Tool Show was the latest product of Eubama. This machine tool is the “response†to the highest production, the shortest working hours, the traditional advantages of multi-axis machines, and simple workpiece machining requirements. Minibama's multi-axis machine tool can accurately complete the appearance of complex workpieces. It can be equipped with and used five drive-type machining tools to complete the processing of parts up to 16mm in diameter and up to 50mm in length. It can complete the processing content of three processes in ordinary processing in one clamping.
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