Efficiency and quality of turning and milling machining centers
Efficiency and quality of turning and milling machining centers
In the wave of market economy, all enterprises are pursuing benefits, so people pay more attention to processing efficiency. At present, popular high-speed processing is widely regarded as one of the effective means to improve processing efficiency; At the exhibition, people can see all kinds of high-speed processing equipment, which can be described as infinite scenery; the most intuitive feeling brought by high-speed processing is the improvement of spindle rotation speed and cutting speed, and the processing time is obviously shortened; From a profit perspective, high-speed machining is not suitable for all companies; because of the infinite appearance, there needs to be a huge expense to support. The investment in high-speed processing equipment is not only the equipment itself, but also the cost of machine maintenance and use, which is much higher than ordinary equipment. The most obvious is the high cost of conventional consumables such as tools and cooling media; in addition, the maintenance cost of the machine tool, accidental loss, etc., will bring a surprising "surprise" to his owners. These reasons have caused many high-speed processing equipment to eventually be used as conventional equipment, losing its value and function. In fact, high-speed machining is only suitable for a few companies with high added value and advanced technology.
In fact, in terms of improving processing efficiency, high-speed machining is only one of the means; in the end of the last century, high-speed machining equipment required linear motor, electric spindle, tool durability has made some technical breakthroughs, enabling high-speed machining to develop rapidly. In fact, we still have a way to improve the material removal rate by increasing the power of the machine or increasing the load of the tool. We call it “powerful cutting”; the power improvement of the machine tool is not a big problem, the rigidity of the machine structure and the tool Durability is the biggest bottleneck. However, under limited conditions, we can optimize the performance of the machine tool and optimize the efficiency of the machine by optimizing the machine structure design, reasonable tool selection and optimization of the process plan. It is the most economical and effective method.
Composite machining is another direction for the development of machining methods. The most common ones are turning and milling combined machining and boring and milling. In theory, it can save a lot of process preparation time and simplify the process flow. It is an effective means to improve product quality and production efficiency. . However, such equipment is relatively expensive.
The above several processing methods are to improve the processing efficiency. In fact, improving the processing efficiency is not only reflected in the application of equipment, but also in the application of tool measuring tools and fixtures, we can also find ways to improve efficiency. In the field of processing where these methods are applied, we collectively refer to them as "efficient processing."
Let's take the application of turning and milling composite equipment as an example to explore how to make full use of the efficiency of the equipment. Whether the efficiency of the equipment can be fully utilized is the decisive factor for the company to make a profit. Here we look at the two perspectives of quality and quantity. On the one hand, due to the use of effective numerical control program control, the consistency of the product is guaranteed, the influence of human factors is minimized, and the accuracy of the product can be evenly distributed in the tolerance zone. On the other hand, the quality of the product is improved by reducing the process flow and avoiding the error of repeated clamping. In the processing of large quantities of products, the advantages of such equipment are production efficiency and stable product quality; in the processing of small batches of products, the flexibility of the equipment and the high product quality are reflected. In the application of such equipment, the focus is on product quality and processing efficiency. We give you some intuitive feelings through some examples of turning and milling composite machining.
This is a typical joint type part, the inner shape needs to be processed, and the batch size is very large. If the part is processed on the turning and milling composite equipment, it is the best choice in terms of efficiency and quality. Choosing a reasonable processing plan and tools with an automatic feeding mechanism, the processing time of a single piece can even be calculated in seconds, and its production efficiency can not be imagined in the conventional process arrangement.
This is a kind of equipment with higher degree of compounding. The structure of the double tool holder makes the machining efficiency greatly improved. How to effectively use the two tool holders to make them cooperate with each other and shorten the processing time. This is the practical application of this kind of equipment. One of the main topics. In addition, the linkage between the upper turret and the C-axis can also complete the five-coordinate linkage processing, which can be effectively solved in the CAM software. For millions of devices, the necessary tools for CAM software are often overlooked.
The two-spindle device can realize the automatic turning of the parts. The coaxiality of the front and back sides can be guaranteed by the precision of the machine tool, which reduces the preparation time of the repeated loading and ensures the precision of the parts, especially the mass-produced parts. The consistency of the parts can be well guaranteed and the machining tolerances are easily controlled within the specified range.
Through the above three examples, we can see that the turning and milling composite equipment can effectively improve product quality and processing efficiency. However, only efficient equipment, no effective tools and means to drive it, is also a loss. There are two feelings here. First, reasonable tool selection and effective tool management system are the basic guarantee for efficient processing. Second, the support of CAM platform is an indispensable condition for efficient processing. Whether in high-speed machining, strong cutting or compound machining, tools are an important issue for us forever.