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What are the characteristics of precision parts processing?

2019-06-21

What are the characteristics of precision parts processing? Five-axis linkage machining center is a high-tech, high-precision processing center specially used to process complex curved surfaces. This machining center system has a decisive influence on the aviation, navigation, military, scientific research, precision instruments, high-precision medical equipment and other industries of a country.


I. What is a Five-Axis Machining Center

Five-axis linkage processing has the characteristics of high efficiency and high precision. Complex processing can be completed by one clamp of workpiece. It can adapt to the processing of current moulds, such as automotive parts, aircraft structural parts, etc. There is a big difference between a five-axis machining center and a pentahedron machining center. Many people do not know this, mistake the pentahedron machining center as a five-axis linkage machining center. Five-axis machining center has five axes, X, Y, Z, A and C. XYZ and AC axes form five-axis machining. It is good at spatial surface processing, profiling, hollowing, punching, oblique hole, oblique cutting and so on. The pentahedron machining center is similar to the three-axis machining center, but it can do five faces at the same time, but it can not do special-shaped processing, such as drilling oblique holes, cutting oblique planes and so on.


In addition, the five-axis NC machining center has a wide range of applications. It is known that the current five-axis NC machining center system is the only means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, automobiles engine wheels, crankshafts of large diesel engines and so on.


Advantages of Five-Axis Machining Center

  1. Reduce the processing time and improve the processing accuracy.


The biggest characteristic of five-axis linkage machining center is that one-time clamping can process all five surfaces. That is the so-called processing angle avoidance. If it is a linkage machine, the C axis can rotate indefinitely, and the A axis can rotate about 130 degrees. The characteristics of these equipments make it possible to avoid interference in processing.


The advantage of this method is that one clamping process can be completed, which avoids repeated positioning errors caused by multiple clamping. At the same time, one-time clamping also saves a lot of time and improves work efficiency. Can reduce the time from product to delivery, reduce inventory.


2. Reduce the cost of equipment investment, workshop space and the number of workshops.


Five-axis linkage processing center about compound machine, usually with turning function, from lathe to milling machine to vertical grinding can be included, we all know that the current price of vertical grinding equipment is very expensive, through cost, processing rhythm and other accounting can be found that the five-axis cost is relatively high. Previously, most of our production and processing may be based on engineering partitioning. The problem with this mode of production is that there is a lot of waiting time that can not be eliminated. However, the engineering intensive production represented by five-axis compound processing equipment only needs the pre-commissioning time. With the popularity of all kinds of domestic simulation software, the programming can be completed only by importing blank data, and the pre-preparation can be greatly shortened. So at present, foreign auto parts and high-end manufacturing are mainly five-axis.


3. No special fixture is needed to realize automation.


Another notable feature of the five axes is that the dependence on fixture will be reduced. Regular workpiece can be clamped directly with three-claw four-claw chuck, and irregular workpiece can be clamped with one side and two pins. At the same time, the five-axis machining center can realize the automation and fewer people in the factory. For example, the joints and bases of processing robots. Previously, the compound processing of Horizontal Calcium and Riga was used. Now, the 24-hour processing can be realized only by using zero-point pallet and five-axis linkage machining center.


What are the characteristics of precision parts processing mentioned above? We must process them strictly according to the additional drawings. The actual size of the processed parts will not be the same as the theoretical size of the drawings. However, as long as the size of the processed parts is within the allowable error range, they are all qualified parts. Therefore, the requirements of precision parts processing are strictly in accordance with the principle. On dimension processing.


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