In the processing and manufacturing of automobile parts, there are some parts, such as engine body, etc. because of its ultra-thin or complex geometry, and a large number of materials need to be cut and removed, so the processing is difficult and inefficient. Usually, using the traditional processing method often takes a lot of time. However, through the high-speed machining center can bring a completely different process and effect.
High speed machining technology of engine and accessories
The high-speed machining center equipped with tool magazine and automatic tool change device is characterized by outstanding flexibility and easy to change machining objects and methods. Therefore, the flexible production line composed of high-speed machining center can give full play to the advantages of high-speed cutting technology and automatic tool change.
In the manufacturing process of automobile engine and its accessories, turning machining center and milling and boring machining center are commonly used. For those complex workpieces, centralized process should be used as much as possible to complete as many processing processes as possible, so as to avoid the labor consumption caused by repeated clamping. At this time, the single defect of traditional lathe technology will be fully exposed, so it is necessary to use high-speed machining center.
In the selection of tools, in order to save working hours, it is also required to reduce the number of tool changes, which requires the use of tools with multi-functional characteristics. At the same time, the use of fewer tools is also conducive to reducing the inventory of the machining center tool library, reducing the management and manufacturing costs of tools. More commonly used multi-functional tools, including multi-functional turning tools, milling tools, boring milling tools, drilling, milling threads, chamfering, etc. Of course, not all processes require the use of multi-functional tools. There are also some key processes that require high precision, which need to use more professional tools for processing.
High speed milling technology of covering parts and abrasives
Parts such as the cover parts inside and outside the car body and the dashboard inside the car are mainly processed and manufactured by injection mold in batch. Each type of car often needs thousands of dies to process all the necessary parts. And the mold itself also needs the production cycle. If the mold production schedule is wrong, the production schedule of the whole automobile production line will be delayed. This requires mold production should be as efficient as possible.
But the problem comes, this kind of injection mold generally belongs to the complex cavity and thin shell structure, using ordinary cutting technology processing not only takes time and effort, but also can not meet the ideal accuracy requirements, we must arrange workers to repair it by hand. If high-speed cutting technology is used, all these can be solved. High speed milling technology based on machining center has obvious advantages in machining three-dimensional curved surface and superhard material. It has the characteristics of high speed, high feed rate and one-time rough finishing, which is especially suitable for mold processing.
Using high-speed milling technology can greatly shorten the cutting time, improve the machining accuracy, and reduce the workload of manual finishing. The overall calculation shows that this method can shorten the mold manufacturing cycle to about 60% of the original, and the later part manufacturing process can be greatly advanced.
Advantages and conditions of high speed feed cutting technology
In addition to high-speed cutting, high-speed feed technology is another key technology to improve production efficiency.
On the premise that the cutting speed of lathe remains unchanged, the increase of feed speed can increase the cutting efficiency in proportion. In addition, the use of high-speed feed processing technology can also avoid the need to use other tools for subsequent processing after one-time processing, which not only improves the production efficiency, but also increases the investment efficiency. Moreover, the high-speed feed technology can also reduce the load of the machine tool, reduce the corresponding energy consumption and tool wear.
However, in order to use high-speed feed technology, there are certain requirements for the equipment. First, the cutting edge should have a specific shape to meet the needs of large feed when the cutting depth is shallow; second, the proportion of feed component force in the total cutting force cannot be higher than the main cutting force, which can effectively avoid the vibration of workpiece and equipment; in addition, it needs a considerable investment to equip the machine tool with high-speed feed function.
With the development trend of miniaturization, energy saving, intelligence and diversification of automobile products becoming increasingly prominent, automobile manufacturing industry is making great strides in the direction of mass production, fast-paced and high-precision, all of which put forward more stringent requirements for its processing and manufacturing process. The high-speed machining technology emerges at the historic moment under such an era background, and leads the new trend of today's and future manufacturing technology.
