Knowledge of CNC turning and milling machining

Composite machining is one of the processing technologies in the field of machining. It is an advanced manufacturing technology. Compound machining is to realize several different machining processes on one machine tool. Compound machining is the most widely used and most difficult, which is turning milling compound machining. Turning milling compound machining center is equivalent to the compound of a CNC lathe and a machining center.

brief introduction

Turning and milling compound machine tool is the fastest developing and most widely used numerical control equipment in compound machine tool. Machine tool compounding is one of the important directions of machine tool development. The compound machine tool also includes turning milling compound, turning milling compound, milling compound, cutting and 3D printing compound, cutting and ultrasonic vibration compound, laser and stamping compound and other various forms. The compound purpose is to make a machine tool have multi-function, can complete multi tasks at a time, improve processing efficiency and processing accuracy

advantage

Compared with the conventional NC machining process, the outstanding advantages of composite machining are mainly shown in the following aspects.

(1) Shorten product manufacturing process chain and improve production efficiency. Turning milling compound machining can complete all or most of the processing procedures by one-time loading, thus greatly shortening the product manufacturing process chain. On the one hand, it can reduce the auxiliary production time caused by the change of fixture, and reduce the manufacturing cycle and waiting time of fixture, which can significantly improve the production efficiency.

(2) Reduce clamping times and improve machining accuracy. The reduction of the loading times avoids the error accumulation caused by the transformation of the positioning datum. At the same time, most of the turning milling complex processing equipment has the function of online detection, which can realize the in-situ detection and precision control of key data in the manufacturing process, so as to improve the processing accuracy of products.

(3) Reduce floor space and production cost. Although the price of a single turning milling complex processing equipment is relatively high, due to the shortening of manufacturing process chain and the reduction of equipment required for products, as well as the reduction of the number of tooling and fixtures, the floor area of workshop and equipment maintenance costs, it can effectively reduce the investment, production operation and management costs of the overall fixed assets.

Characteristic

1. The turning milling compound machining center uses high-precision internal spindle;

2. The free mobile operation panel improves the working efficiency;

3. The machine is mainly used for mass production of various small parts and complex parts with high-speed processing and diversified processing;

4. In particular, the long and thin complex process can be processed and formed at one time, and the automatic feeding device can be configured to improve the efficiency;

5. Material details: cutting, copper, iron, aluminum alloy, stainless steel, Teflon and other materials.

Development status

Most of the turning and milling complex machining is completed in the turning center, while the general turning center only changes the ordinary turret tool rest of the CNC lathe into the turret tool rest with the power tool, and the spindle adds the c-axis function. Due to the limitation of turret structure and dimension, the power of the power head is small, the rotating speed is not high, and the larger tool can not be installed. This kind of turning center is mainly for turning, milling and drilling functions are only for some auxiliary processing. Because of the high cost of power tool holder, the cost of turning center remains high. The price of domestic tool holder is generally more than 100000 yuan, and that of imported tool holder is more than 200000 yuan, which can not be afforded by general users. Most of the economical turn milling composites are XZC axis, that is, a rotating C axis is added to the chuck to realize the basic milling function.

There are many kinds of equipment in the market, such as WFL, DMG, Dalian machine tool, Taiwan Taiyu precision machine, Doosan (Doosan machine tool), all of which have high-end equipment; the well-known software of the market is Edgecam, UG NX, etc.