Today's requirements for lathes are varied: first, the size of the batch is flexible, in addition to being highly automated, and the installation time is short, and finally the production process costs are low.
For decades, a typical fixed headstock with a horizontal spindle and a lathe with its tailstock has been the ideal machining equipment for shaft parts. For disc-shaped parts with small diameters and medium weights, horizontal machines have long been common. However, when the part diameter is large and the weight is heavy, the load on the spindle bearing is also increased. The vertical machine designed for this purpose is a classic vertical lathe with a fixed rotary table driven. The vertical installation of the spindle not only makes the machine more rigid, but also the heavy-duty parts can be clamped directly from the top.
For the first time in the early 1990s, this principle was messed up. With the industry booming, companies are looking for high-efficiency machine tools that process high-volume disk parts at an affordable price. By J. G. Weisser invented and Salach Emag successfully introduced the machine to the hanging spindle of the mobile spindle as a new solution. This machine has obvious advantages; it is cost-effective to automate without the need for additional loading devices, and because the chips fly off well, the process is safe and reliable. Since the movement is now carried out by the workpiece, this solution has developed into a versatile general.
In recent years, through technology integration, shortening the process chain has become a fruitful business area of ​​Emag. Mr. Jürgen Walz, General Manager of Emag's Technical Department, said: “High-tech assets such as automobiles, buyers are increasingly demanding comfort, requiring individualized design, requiring high operational safety and long life. In this way, for the manufacturer, the product batch size is getting smaller and smaller, while the processing quality is getting higher and higher. The installation and operation time of the production tool is gone forever. Now the preferred delivery is neither Allows downtime and does not allow the manufacture of scrap. The process cost of a part is reduced, and the total cost of production equipment has to be reduced over many years."
In addition, the area that needs to be reduced is also the floor space, as well as the delivery time and installation time of these production equipment, and the installation, commissioning and commissioning phases as well as the full-load start-up phase are also shortened. These requirements are as Mr. Walz said; “it will definitely lead to production flexibility. The original mass production can be processed in parallel on many machines. Now, after process integration, multiple production units that can replace each other are implemented in parallel. Chemical production. Process integration on the one hand significantly shortens the process chain, on the other hand, through the parallelization of the production process, the stability is greatly improved."
Using the VTC structure (vertical turret loading center), Emag has revolutionized shaft machining. It is based on a stable matrix made of polymer concrete. Compared with traditional materials, the vibration damping performance is many times higher, which makes the surface quality of the machine tool better and the tool life is longer. The spindle motor, spindle, tool turret and switchgear are all cooled by liquid, plus high drive power (29/38kW), high speed and stable tool turret. The tool shank diameter is 40mm, making the VTC 250 a 4 A highly productive lathe machining center for shaft machining. Its tailstock and center frame can be moved by CNC control. In addition to the tool clamping mechanism, the two tool turrets can have up to 11 positions for complete machining, and can be equipped with fixed turning tools or driven drills and milling cutters.
In time, the two tool turrets undertake the loading and unloading of the blank and the finished part in parallel: the gripper of the No. 1 turret removes the next blank from the blank storage box and transports it to the clamping position; At the same time, the gripper of the No. 2 turret removes the processed workpiece from the clamping position, transports it out of the workshop, and stores it in the finished product storage.
Manufacturers of parts can process workpieces of different sizes and can be used for small batches. Fast programming wells can be quickly modified for lathes: For larger batches of series production, high productivity automated production equipment is required. Emag's VL series can do this, and now comes with a larger VL 5 with a chuck diameter of 250mm.
The lathe is equipped with a chip conveyor. Motor liquid cooling device, spindle and tool turret, and workpiece automatic loading and unloading device. There are suitable splint-stabilized parts in the fixture that do not require manual operation because the workpieces are simply placed in the drive frame, even when the machine is running. For some "sloshing" workpieces, the workpiece baskets adjusted in the order of the workpieces are placed in the transmission frame by hand, and then the special workpieces are placed in the workpiece basket.
Esslingen lndex-Werke GmbH&Co. KG Co., Ltd. introduced the new V160C machine tool, adding a compact lathe to its Vetch-Line vertical lathe series. The lathe has a small footprint but has a huge working space. The work space is open on both sides and provides extremely convenient operation and installation performance in vertical turning.
This series of machine tools can reduce the processing cost of each workpiece when machining simple to complex disc-type workpieces, and the batch size can be small or large. The basic model is V160C. This type of machine is equipped with a spindle and has three tool turrets. The extended V160G machine is equipped with a countershaft and up to four tool turrets. The V160 series also includes a modular system: various modules and feed units. As well as additional devices can be combined into a production-oriented solution according to individual requirements.
The large working space with free access to the vertical lathe with large working space is especially suitable for the use of additional devices. With these additional devices, multiple processes can be combined into one machining process, such as grinding outer and inner grinding shafts, multi-axis and multi-turning machines, high-frequency spindles or large driven milling heads and cutter heads. Since the secondary shaft of the V160G is mounted under the tool holder, it can now be directly ground by the spindle and machined from the back without loss of precision, and this allows the two machined sides to be tightly controlled within tolerance.
The V160 series chuck has a diameter of 160mm (with a secondary shaft of 200mm), a maximum spindle speed of 5000r/min and a drive power of 20kW. The maximum sliding distance in the X-axis direction is 1160 mm, the feed force is about 8 kN, the fast-forward speed is 80 mlmin, and the acceleration (X-axis) is lOm/S2.
Magdeburg Machine Tool AG will launch its newly developed MVTl60U-4 CNC vertical lathe at the Metav Metalworking Expo. In recent years, medium and large-scale turning of corrugated parts has made gratifying progress in reducing investment costs and shortening workpiece replacement time. The existing solution has been adopted as a modular structure, which is characterized by minimizing the time required for the operation of the workpiece. In addition to the turning module, the cut-off module and the centering module can also be used. MVTl60U-4 can also fall into this category.
Mr. MaUhias Fleischer, Head of Vertical Lathe Products, responsible for worldwide sales and product development, Adolf Waldrich Coburg & Co., said: "As early as 20 years ago, large machine tools have begun to integrate many different technologies into one machine. Adolf The vertical lathes of Waldrich Coburg & Co GmbH have a wide range of motions, with workpiece diameters ranging from 2000 to 12000 mm. In the development of Multi-Tec and Multi-Turn machines, we have taken this development into account, such as vertical. Or the concept of a vertical lathe is no longer the name that is suitable for this type of machining center, because cars, drills and milling are now standard functions, but other technologies, such as surface grinding, cylindrical grinding and internal grinding Or five-axis milling, which is currently a standard alternative technology. The third linear axis for eccentric drilling and milling and for pallet systems is also an alternative function."
Integrate many different technologies on one machine
Transferring the machine to a different technology is first achieved by exchanging the machining unit, which is automatically assembled to the tool mover. The tool is then automatically switched back to the machining unit. Matthias Fleischer said: "We have recently developed the exchange system for the machining unit and the tool for our Multi-Turn machine. The multi-layer cylindrical tool magazine can hold 200 tools on a 2m2 base area."
Willich WMS Machine Tool Services & Sales GmbH introduced a new range of machine tools at the 2004 Metalev Metalworking Expo in Düsseldorf. WMS is the German general agent of Belgium FAT/Haco company in Breslau. As a European machine tool manufacturer, FAT manufactures traditional cycle-controlled CNC lathes. About five years ago, Haco of Belgium purchased the FAT company in Breslau.
Two new machine tools have been expanded in their catalogue. The TUR 1150/1350MN cycle control lathe is a new idea with a diameter of 1150 and 1350mm and a turning length of 8000mm. The advantage of this type of lathe is that a new solution is proposed for the base of the frame, which has a width of 1020 mm. The base of the machine is a single cast-in-place construction. Even though the bed is low, the built-in chip conveyor on the front is not inserted into the foundation. The cycle diameter of the FCT 700 CNC inclined lathe is 700mm. Turning length is 1100-3100mm
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