CNC lathe, turning center is a high - precision and efficient automatic machine tool. Equipped with multi-station dao tower or power tower, the machine will have a wide range of processing technology, performance can be processed straight cylindrical, slash cylinder, circular arc and a variety of thread, groove, worm and other complex artifacts, compensated by linear interpolation, arc interpolation function, and in the mass production of complex parts in good economic effect.
The CNC machine tool is prepared according to the prefabricated processing procedure, automatically processing the parts processed. We put the parts of the processing craft route, process parameters and tool trajectory, displacement, cutting parameters (spindle revolutions, feeding, turning back, etc.) as well as the auxiliary function (in knife, spindle forward, reverse, cutting fluid, etc.), in accordance with the instruction code and procedures prescribed by the CNC machine format write into the processing program list, then this application form on the contents of the records in the control medium (such as punched tape, tape, disk, magnetic bubble memory), and then input to the numerical control machine tool numerical control device, thereby command machine parts.
The process from the analysis of the part graph to the control medium is called nc program. Nc machine tools and common machine tool processing parts of the difference between nc machine tools is according to the program automatically machining parts, while the common machine tool to operate by the people, we just change control machine action program can achieve the purpose of processing different parts. As a result, CNC machines are especially suitable for small batch and complex shapes requiring high precision.
1. Preliminary preparation
Determine the typical batch process requirement, machining parts, and formulate the functions of the CNC lathe is to do a good job in preparation, reasonable choice of CNC lathe Meet the technological requirements of typical parts.
The process requirements of typical parts are mainly the structural dimensions, machining range and precision requirements of the parts. The control precision of CNC lathe is selected according to the requirement of precision, precision of the workpiece, positioning accuracy and surface roughness. Based on reliability, reliability is the guarantee of improving product quality and productivity. The reliability of nc machine tool is that the machine tool can perform its function under the specified conditions, and it is stable for a long time without failure. That means the average time of failure is long, even if there is a failure, it can be recovered in a short time and re-put into use. Select the machine with reasonable structure, excellent manufacture and batch production. Generally, the more users, the higher the reliability of the numerical control system.
2. Tool accessories and tool selection
Machine tool random attachment, spare parts and their supply ability, cutting tools are very important to the CNC lathe and turning center. Select machine tool, need to consider the tool and the attachment.
3. Focus on the identity of the control system
The manufacturer generally chooses the same manufacturer's products, at least the same manufacturer's control system, which brings great convenience to the maintenance work. Teaching units, due to the need of students to be informed, choose different systems, equipped with various simulation software is the smart choice.
4. Choose according to the performance price
Do function, precision not idle, not waste, do not choose to do not have irrelevant function with oneself.
5. Protection of machine tools
When needed, the machine can be equipped with fully enclosed or semi-enclosed protective devices, automatic cuttings.
The above principles should be taken into account in selecting the CNC lathe and turning center.
The quality control
If the normal lathe and the long time used lathe are not modified, only the new CNC lathe will be purchased, which will increase the cost of the equipment of many manufacturers. Therefore, it is necessary for the manufacturers to make numerical control of the lathe of ordinary lathe and long time.
Because the numerical control transformation for transforming manufacturer, is mixed and disorderly, but how to quality control the transformation of nc machine tools is the problems, we always need to discuss in this talk about how to transform the quality control of CNC lathe.
Ordinary lathe numerical control transformation into the reconstruction of new and old machine, xinji is users buy ordinary lathe or ordinary light machine (only with guide of lathe headstock and longitudinal and lateral direction), the numerical control transformation according to the needs of its reconstruction manufacturer. The old machine reconstruction means the user will have used the ordinary lathe or the numerical control lathe to undertake the renovation and the numerical control transformation. Among them old machine reformation includes overhaul of overhaul lathe and old machine parts. In this paper, the quality control method, control point and inspection process of nc lathe are discussed.