Nc machine tool is digital control machine tools (Computer numerical control machine tools) for short, is a kind of a program control system of automatic machine tools. The control system is able to handle the with logic control code or other symbols in accordance with procedures prescribed by the instruction, and the decoding, with code Numbers, through information carrier type numerical control device. After processing the numerical control device and a variety of control signals, control the action of machine tool, according to the shape and size of the drawing requirements, automatically to parts processing. Nc machine tools is better solved the complex, precision, small batch and many varieties of parts processing, is a kind of flexible, highly efficient automation of machine tools, represents the development direction of modern machine tool control technology, is a typical mechatronics product.

The main features

Numerical control machine tool operation and monitoring was done in the numerical control unit, it is the brain of a CNC machine. Compared with the ordinary machine tool, CNC machine tool has the following features:

1, strong adaptability of processing object, to adapt to the characteristics of mold products such as single production, for mould manufacturing provides a suitable processing method;

2, high machining accuracy, has the stable machining quality.

3, for multi-axis linkage, to processing complicated shape parts;

4, the processing parts change, generally only need to change the CNC program, can save production preparation time;

5, high precision and rigidity of machine tool itself, can choose favorable processing amount, high productivity (generally 3 ~ 5 times of ordinary machine tool).

6, machine tool automation degree is high, can reduce labor intensity;

7, is conducive to the modernization of production management. Nc machine tools using digital information and standard code processing, transfer information, using the computer control method, for the computer aided design, manufacturing and management integration laid the foundation;

8, high quality requirements for the operator, the maintenance personnel of the higher technical requirements;

9, high reliability.

Nc machine tools compared with the traditional machine tool, has the following features.

1, highly flexible

On the nc machine tool machining parts, mainly depends on the processing procedures, it is different from ordinary machine tool, don't have to make, replace many mould, fixture, often do not need to readjust the machine. Therefore, numerical control machine is suitable for the parts manufactured by frequent change of situation, which is suitable for single piece and small batch production and the development of new products, so as to shorten the production preparation cycle, save the cost of a large number of process equipment.

2, high machining accuracy

Machining accuracy of nc machine tools in general can be up to 0.05 0.1 MM, nc machine tools is according to the form of digital signal control, numerical control device every output a pulse signal, the machine moving parts move a pulse equivalent (0.001 MM), and machine tool feed drive chain of the reverse clearance and screw pitch error of the mean by the nc device march compensation, therefore, the numerical control machine tool positioning accuracy is higher.

3, processing quality is stable and reliable

Processing the same parts, in the same machine tool, in the same processing conditions, using the same tools and processing procedures, cutter feeding trajectory are exactly the same, good consistency of the parts, quality is stable.

4, high productivity,

Nc machine tool can effectively reduce the processing time and auxiliary time parts, large range of nc machine tool spindle velocity and feed, allow big strong cutting the amount of cutting machine tools. Nc machine tools is into the era of high speed machining, CNC machine tool moving parts of the fast moving and positioning and high speed cutting processing, greatly improved productivity. In addition, with processing center knife library, which can realize the multi-channel working procedure of continuous on a machine tool processing, reducing the intermediate process between the turnaround time, improve the productivity.

5, improve working conditions

Numerical control machine is before after adjust, input and start the program, can automatically continuously carry on the processing machine tools, until the end of processing. The operator to do is to process the input, edit, part loading and unloading, tool preparation, processing condition observation, parts inspection, etc, labor intensity is reduced, machine operator Labour tends to intellectual work. In addition, the combined machine tool is generally, clean, and safe.

6, the use of modern production management

Nc machine tool processing, can be precisely estimated processing time in advance, the cutting tool, jig can be used for standardization, modernization of management, easy to implement the standardization of processing information, with computer aided design and manufacture (CAD/CAM) organically, is the foundation of the modern integrated manufacturing technology. Five-axis linkage machining center