Red blood cells are truly tiny things that carry the oxygen in the lungs to other organs in the body's bloodstream, which is only 0.008mm in diameter and can not be seen by the human eye without the aid of an optical amplifier . And when Mikron announced that its VX-10 vertical turret multi-station machine can achieve ± 0.002mm positioning accuracy in 0.4s, we can imagine how difficult it is. Precision and flexible one of the six-sided processing system, which can be 40mm × 40mm × 80mm precision specifications below the processing of components.
The stability of processing equipment is the most basic prerequisite for processing high-precision components, so from the beginning, device stability issues have become a focus of attention both for developers and designers.
The vertical turret bearing (center of the figure) rotates along a horizontal axis, which transfers workpieces from one work station to the next work station 'width =' 400 'within 0.4 s with a positioning accuracy of ± 0.002 mm. height = '600' border = '0' />
The dual-bearing vertical turret (center of the figure) rotates along a horizontal axis that delivers workpieces from one work station to the next within 0.4s and with a positioning accuracy of ± 0.002mm.
With the help of finite element method, the equipment is optimized
Based on the finite element method (FEM), the overall structure of the equipment is optimized, from the stand, rotary table bearing and its drive system, to the processing unit and the base etc. The practical application results of multiple devices Shows that the FEM calculation is very accurate and the machining force flux in the equipment is adjusted to the optimum stiffness.At the same time there is basically a system in the closed force transmission system that has a vertical turret and double bearings and the other two Rigid-pass systems connect the turret to the machining units on either side of the turret. Strong rigidity can cause machining vibrations that can adversely affect the surface quality of the part, as well as extend the life of the tool.
Figure 1 For the user, one of the unique features of the VX-10 is the ability to perform six-sided machining directly from bar or wire material
Tool coolant temperature control accuracy of ± 1 ℃
For high precision machining operations, in addition to mechanical stability and precision equipment, another important factor is that the temperature should be controlled to a minimum fluctuation. Thus, the need for regulation of the temperature of the coolant to the tool ± 1 ℃ of Within the accuracy range, it is possible to maintain low temperature fluctuations to the maximum extent possible during processing, which can help to avoid problems of insufficient accuracy due to thermal deformation.
In order to avoid tension hydraulic clamp deformed, it can be programmed and controlled blessings workpiece, the workpiece only by the clamping force required for real-time processing step. Accordingly, in finishing, can be targeted using specific Roughing requires less clamping force to hold those components that are very sensitive to deformation.
By plane, drilling and contour line measurement, the device may enable early correction of dimensional variations, to ensure continuous and stable quality. Workpiece after processing all six sides of ten processing station, i.e. the production of the report is completed. The A special feature of the device is that it can be applied to the workpiece length of 160mm for processing.
When company Mikron noted that such a starting wire or rod is six-sided processing of the unique device in from the loading station to clamp a workpiece by a robot or a wire or rod is passed in, first frontal and follow-up by the rotary indexing table clamp face sandwiched processed. loading station processing performed in parallel with the main production time, the rotary indexing table subsequent clamping of the workpiece gripper and cutting of the wire or rod volume. Through the processes of turning, milling, boring, threading, broaching, stamping and engraving, the four-axis machining capabilities at the loading station meet all the requirements for precision component machining.
After the loading station, the turret transfers the workpieces to the next eight workstations. The eight workstations located between the loading station and the unloading station have the various machining capabilities required to machine the precision components. When the workpiece reaches the tenth job All six surfaces are processed and the tenth station is the unloading station, where completed workpieces are delivered to the in-plant logistics system, such as assembly or packing points.
The device can produce different workpieces from the same bar or wire at the same time, for example, a device that produces the required number of bands of watch bands of different widths and lengths in one production flow, In this case, Completed watch strap components will automatically be placed in the correct bin of the sorting station at the unloading station.
The compact equipment is only 2.6m long, 6.7m wide and 3.6m high. In addition, the need for peripheral equipment needs to be considered and determined according to different manufacturing environments, for example, through the use of wire coils, bar stock or blank trays for raw materials As well as the unloading of finished products and intermediate storage, as well as the installation of a coolant plant with filters and chip discharges for a cut of 20 kg / h.
Figure 2 This machine belongs to one of the most precise and flexible six-sided machining systems in the world. It can efficiently process precision parts of 40mm × 40mm × 80mm
The liquid-cooled torque engine ensures the positioning accuracy
The double-bearing vertical turret rotates along a horizontal axis, which transfers ten workpieces on both sides of the machining unit to other workstations within a 0.4 s time. The high positioning accuracy is achieved by means of a liquid with a thermostatic device Cold torque engine to achieve.Each station between the loading station and the unloading station, each station has a CNC machining unit on both sides of the turntable.Therefore, in addition to loading and unloading station, a With a total of 18 machining units on each unit, each station can be equipped with up to two horizontal and one vertical machining axes. This configuration allows the VX-10 to not only be highly productive, but also With its extraordinary flexibility and versatility, the two machining axes on each machining unit can be equipped with a uniform tool, which has two advantages: on the one hand, when one tool is damaged or the blade is worn, On the same axis as the same tool, without interrupting production; on the other hand, the production facility can have dual wire entry capabilities that double productivity: from loading station to unloading station, all jobs On which four tools simultaneously machining two workpieces.
Flexibility is also one of the strengths of the CNC equipment, as long as the corresponding procedures, changes in production tasks, equipment operators simply call the appropriate CNC program. Mechanical parts of the dress is also simple, need to be replaced in the rotary table , The unit can accurately measure the position of the fixture with a scanning gauge and automatically calibrate the zero in the software system and then the CNC automatically starts the process based on the updated datum point jobs.
Figure 3 This compact device has a length of 2.6 m, a width of 6.7 m and a height of 3.6 m. In addition, the physical requirements of the peripherals need to be taken into consideration because of the varying manufacturing environments
Mikron has a wide range of processing units available
18 machining units with a standardized interface and a modular changeover Mikron offers a wide range of machining units, for example three-axis vertical machining axes with all axes facing radially to the rotary table Axis while the axis of the three-axis horizontal machining axis is parallel to the axis of the turntable.Three-axis machining units with horizontal and vertical machining axes are also available.For the angular position between the two, there is also a The corresponding three-axis machining unit, manually adjustable from -90 ° to + 90 °, is available, and a machining unit is specially designed for the machining of notches and undercuts with the U-axis transverse to the spindle axis, The Z axis is parallel to the main axis, both of which are CNC interpolated.
All machining units can be equipped with different types of spindles and different types of spindle drives such as different machining for milling, boring, deburring and thread cutting etc. The maximum working pressure of the coolant introduction system inside the spindle can reach 80 bar (1 bar = 0.1MPa) .In order to realize the diversity of production, the user can also purchase the processing unit at any time in the follow-up work to extend the production line.
A large number of industrial applications in the field is a good example
In addition to the above-mentioned situations where the watch strap needs to be machined out of the same bar stock at the same time, there are a number of application examples that strongly demonstrate the fact that Mikron VX-10 devices are actually working Good performance.There is titanium metal as a raw material per minute can produce 22 small spring box, it can make funky glasses folded together.Practical staff in the manufacture of glasses joints of other nickel-silver alloy material difficult to process Parts have also accumulated a wealth of useful work experience, which also excels in the production of automotive parts, bronze-mounted valve attachments and door locks or stainless steel medical device components, especially those required for dentistry.
Headquartered in Agno, Tessin, Switzerland, Mikron has enjoyed a strong reputation for decades for customer-specific high-precision and high-throughput cutting tools with approximately 7,000 manufacturing solutions for complex metal parts in various industries around the world Such as auto parts industry, pharmaceutical and medical industry, writing instrument manufacturing industry, electronics industry, watch industry and solar energy technology and other fields of equipment, other technical solutions are also hydraulic and pneumatic and commodity production, etc. The VX-10 is very popular in these industries due to its versatility and high processing accuracy as well as the flexibility to start with wires.