CNC lathes, turning centers, is a high-precision, high-efficiency automated machine tools. Equipped with multi-station turret or power turret, the machine has a wide range of processing technology performance, can be processed linear cylindrical, oblique cylinder, arc and a variety of threads, grooves, worms and other complex parts, with linear interpolation, Interpolation of various compensation functions, and in the complex production of spare parts to play a good economic results.
CNC machine tool is in accordance with the preparation of a good processing procedures, the processing of parts to be processed automatically. We have the parts of the processing technology routes, process parameters, tool movement trajectory, displacement, cutting parameters (spindle speed, feed, back to eat knife, etc.) and auxiliary functions (tool change, spindle forward, Cutting fluid on, off, etc.), in accordance with the provisions of the NC machine instruction code and program format written into a single program, and then the contents of this program recorded on the control medium (such as perforated tape, tape, disk, bubble memory ), And then input to the CNC machine tool CNC device, which command machine parts processing.
This process from the analysis of parts to the control of the media to make all the process called NC program preparation. CNC machine tools and ordinary machine parts is the difference between the processing of CNC machine tools in accordance with the procedures for automatic processing of parts, and ordinary machine to be operated by people, we only need to change the process of controlling machine tools can achieve the purpose of processing different parts. Therefore, CNC machine tools are particularly suitable for processing small quantities and complex shape requirements of high precision parts.
As the CNC machine tools to follow the procedures to process parts, programming staff after the preparation of good procedures, input to the numerical control device to command the machine work. The input of the program is via the control medium.
CNC lathes, also known as CNC lathes, that is, computer numerical control lathe, is currently the largest domestic use, the most extensive coverage of a CNC machine tools, accounting for about 25% of the total number of CNC machine tools. CNC machine tools is a mechanical, electrical, hydraulic, pneumatic, microelectronics and information technology, such as a number of integrated mechanical and electrical products. It is a machine tool with high precision, high efficiency, high automation and high flexibility in mechanical manufacturing equipment.
The level of technical level of CNC machine tools and its percentage of metal cutting machine tool production and total possession is one of the important indicators to measure the overall level of national economic development and industrial manufacturing. CNC lathe is one of the main varieties of CNC machine tools, it occupies a very important position in the CNC machine tools, for decades has been the world's attention and has been rapid development.
CNC lathes, turning centers, is a high-precision, high-efficiency automated machine tools. It has a wide range of process performance, can be processed linear cylindrical, diagonal cylinder, arc and a variety of threads. With a linear interpolation, circular interpolation of various compensation functions, and in the production of complex parts in the production of a good economic effect. Reasonable selection of CNC lathes, should follow the following principles:
To determine the typical parts of the process requirements, the processing of the workpiece batch, the proposed CNC lathe should have the function is to do the preparatory preparation, the rational choice of CNC lathe prerequisite to meet the typical parts of the process requirements.
Typical parts of the process requirements are mainly the structure of the parts size, processing range and accuracy requirements. According to the precision requirements, that is, the workpiece size accuracy, positioning accuracy and surface roughness requirements to select the CNC lathe control accuracy. According to the reliability to choose, reliability is to improve product quality and production efficiency guarantee. CNC machine tool reliability refers to the machine under the conditions of the implementation of its function, the long-term stable operation without failure. That is, the average time between failures, even if a failure, a short period of time to restore, re-use. Choose a reasonable structure, well-made, and has mass production of machine tools. In general, the more users, the higher the reliability of the CNC system.
2. Machine tool accessories and tool selection
Machine accessories, spare parts and their supply capacity, tools, has been put into production CNC lathes, turning center is very important. Select the machine, need to carefully consider the matching of tools and accessories.
3. Focus on the identity of the control system
Manufacturers generally choose the same manufacturer's products, at least should buy the same vendor's control system, which brings great convenience to the maintenance work. Teaching units, due to the need for students knowledgeable, choose a different system, equipped with a variety of simulation software is a wise choice.
4. According to the performance and price ratio to choose
Do the function, the accuracy is not idle, not a waste, do not choose and their own needs have nothing to do.
5. Machine protection
When necessary, the machine can be equipped with fully enclosed or semi-enclosed protective devices, automatic chip removal device.
In the choice of CNC lathes, turning center, should take into account the above principles.
Host, he is the main body of CNC machine tools, including machine tools, columns, spindle, feed mechanism and other mechanical parts. He is used to complete a variety of cutting mechanical parts.
CNC device is the core of CNC machine tools, including hardware (printed circuit boards, CRT monitors, key boxes, tape readers, etc.) and the corresponding software for the input of digital parts program, and complete the input information storage, data Transform, interpolate operations and implement various control functions.
Drive device, he is the CNC machine tool actuator drive components, including the spindle drive unit, feed unit, spindle motor and feed motor. He is under the control of the numerical control device through the electrical or electro-hydraulic servo system to achieve spindle and feed drive. When several feed linkage, you can complete the positioning, straight line, plane curve and space curve processing.
Auxiliary equipment, CNC machine tools, some of the necessary supporting parts to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring and so on. It includes hydraulic and pneumatic devices, chip removal devices, exchange tables, CNC turntables and CNC dividing head, including tools and monitoring and testing devices.
Programming and other ancillary equipment, can be used to spare parts outside the machine programming, storage and so on.
Since 1952, the Massachusetts Institute of Technology developed the world's first CNC machine tools since the CNC machine tools in the manufacturing industry, especially in the automotive, aerospace, and military industry is widely used, both in terms of hardware and software , Have a rapid development