新葡的京集团3512vip(股份)有限公司

In recent years, the NC rate of machinery manufacturing equipment has increased, and the application of full-function NC lathes, NC vertical lathes, vertical machining centers and horizontal machining centers has become more and more popular. Compared with ordinary machine tools, fully automatic CNC drilling machine has many remarkable technological characteristics and programming skills. If we can fully tap the performance characteristics of CNC machine tools, flexibly apply them, break the Convention in technology and programming, and adopt unconventional processing technology and programming methods, we can greatly improve production efficiency and product quality, and reduce production costs. Tool consumption greatly reduces the processing cost.

Questions raised

Comparing with the traditional common machine tools and special machine tools, the fully automatic CNC drilling machine has the advantages of flexible processing parts, suitable for small batch processing of multi-variety parts, high precision of shape and position of parts processed, easy to realize multi-machine operation and so on. However, in the mass production of parts, compared with special machine tools such as multi-station combined drilling machine, vertical and horizontal combined boring machine and multi-axis lathe, it will expose that the process is too centralized, the production efficiency is low, the production time is long, and the cost of tool consumption is high (usually using Sandvik Coleman, Mitsubishi and Walter, Japan, etc.). Because of the shortcomings of imported cutting tools and high processing costs, with the wide application of NC machine tools in mass production of parts, it has become an urgent problem for users to improve production efficiency, reduce rhythm time, reduce tool consumption and reduce processing costs of parts.

Solution

It is understood that due to the influence of the long-term application of traditional machine tool processing technology, users often can not get rid of the constraints of traditional technology in the application of fully automatic drilling machine, or are subjected to the use of cyclic procedures in the preparation of processing procedures (such as boring cyclic procedures G85 and G87, car end cyclic procedures G94 and car circular inner hole cycling). The constraints of program G90, when processing the same part (such as end face, inner hole or outer circle etc.), often use a single fixed spindle speed and feed for programming. In rough and semi-finish machining, the spindle speed, feed and cutting depth are often restricted by the cutter when the equipment, tool and fixture have been determined. For example, when the cutter is prone to blade collapse, the method of reducing spindle speed, feed or cutting depth is often used to solve the problem. At the same time, the production efficiency is reduced and the cutting depth is reduced. Negative effects of higher processing costs.

After nearly 15 years of practice and exploration in the application of NC automatic drilling machine, we gradually get rid of the constraints of traditional processing technology and programming methods, and find a way to effectively improve production efficiency and reduce processing costs. According to different types of parts, the parts can be classified according to the shape of the parts processed, which can be divided into the typical types listed in the table. In the process of parts processing, the linear speed, feed rate and cutting depth affect the production efficiency, tool durability, surface roughness and dimension under the premise that the equipment, tools and Fixtures have been determined. The main variables of accuracy, therefore, flexible use of unconventional processing technology and programming methods to solve the relationship between them can improve production efficiency, reduce processing costs, for intuitive reading of the present list.

The Effect of Using Unconventional Programming Method on Machining Different Types of Parts

In summary, the key technology of unconventional processing technology and programming method is to break the restriction of traditional processing technology using fixed linear speed and feed (because the spindle speed and feed of common machine tools and special machine tools used in the past can not change their size in the cutting process), and have been cut. During the cutting process, the spindle speed change or feed change can be carried out at will regardless of cutting to any part. However, in practical applications, when roughing and semi-finishing the same part of the cutting process, the feed should be changed, and the feed should not be changed during finishing, because the size of the processing will be affected by the change of the feed. In production, the spindle speed change or feed change needs flexible use.