1.What are the accuracy indicators of small CNC lathes?
The precision indicators of small CNC lathes are roughly divided into: positioning accuracy and repeat positioning accuracy; resolution and pulse equivalent; indexing accuracy. Positioning accuracy refers to the directness between the actual movement position and the commanded position of a mobile part such as a small CNC lathe table. The inconsistent difference is the positioning error. Factors that cause positioning errors include servo system, detection system, feed drive and guide rail errors. The positioning error directly affects the dimensional accuracy of the machined part. Repeated positioning accuracy refers to the consistency of the results obtained after completing the prescribed operation multiple times under the same operating mode and conditions. Repeated positioning accuracy is usually a random error with a normal distribution, which will affect the consistency of batch processing parts. It is a very heavy performance indicator. The positioning accuracy of a general small CNC lathe is 0.018mm, and the repeat positioning accuracy is 0.008mm.
Resolution and pulse equivalent: Resolution refers to the small displacement gap that can be resolved. For the measurement system, the resolution is a small displacement that can be measured, and for the control system, the resolution is a small displacement that can be controlled. Pulse equivalent is the amount of displacement generated by the machine's displacement components without an index signal from the index control device.
Indexing accuracy: Indexing accuracy refers to the difference between the actual rotation angle and the commanded rotation angle when the indexing table is indexing. Indexing accuracy affects the angular position of the part processing part in space, and also affects the coaxiality of hole processing.
2.What should be paid attention to when installing CNC lathes?
The CNC lathe is placed on the foundation and should be leveled in a free state, and then the anchor bolts are evenly locked. For ordinary CNC lathes, the liquid level reading does not exceed 0.04 / 1000mm. For high-precision CNC lathes, the level does not exceed 0.02 / 1000mm. When measuring the installation accuracy, it should be performed at a constant temperature, and the measurement tool should be used after a certain temperature setting time. When installing a CNC lathe, try to avoid installation methods that cause machine deformation. When installing a CNC lathe, certain parts of the machine tool should not be removed. Dismantling the parts may cause the stress in the CNC lathe to be redistributed, which will affect the accuracy of the CNC lathe.
3.What conditions should be met for the normal use of small CNC lathes?
During the operation of small-sized CNC lathe electrical equipment, it needs to withstand many adverse factors from the environment and operation, causing or causing many failures. Therefore, routine maintenance and overhaul are very important and essential parts in production operation. The normal use of small CNC lathes must meet the following conditions,
1. Environmental requirements: The location of small CNC lathes should be far away from the source of vibration, the influence of direct sunlight and heat radiation should be avoided, and the effects of humidity and airflow should be avoided. If there is a vibration source near the machine tool, anti-vibration grooves should be set around the machine tool. Otherwise, it will directly affect the machining accuracy and stability of the machine tool, will cause poor contact of electronic components, cause failure, and affect the reliability of the machine tool.
2. Power requirements: Generally, small-sized CNC lathes are installed in the machining workshop. Not only the environmental temperature changes greatly, the use conditions are poor, but also various mechanical and electrical equipment, which cause large fluctuations in the power grid. Therefore, the location of the CNC lathe requires strict control of the power supply voltage. Power supply voltage fluctuations must be within the allowable range and remain relatively stable. Otherwise it will affect the normal operation of the CNC system.
3. Temperature conditions: The ambient temperature of the small CNC lathe is lower than 30 degrees, and the relative temperature is lower than 80%. Generally speaking, an exhaust fan or a cooler is installed inside the numerical control electric control box to keep the electronic components, especially the central processor's working temperature is constant or the temperature difference changes little. Excessive temperature and humidity will reduce the life of control system components and lead to increased failures. As the temperature and humidity increase, the increased dust will cause adhesion on the integrated circuit board and cause short circuits.
4. Standard use: When using machine tools, machine tool users are not allowed to arbitrarily change the parameters set by the manufacturer in the control system. The setting of these parameters is directly related to the dynamic characteristics of each part of the machine tool. Only the value of the gap compensation parameter can be adjusted according to the actual situation. The user cannot replace the machine tool accessories at will, such as using a hydraulic chuck that exceeds the specifications in the manual. When setting up the accessories, the manufacturer takes full account of the matching of the parameters of each link. Blind replacement causes mismatches in the parameters of various links, and even causes unexpected accidents. The pressure of using hydraulic chuck, hydraulic tool holder, hydraulic tailstock and hydraulic cylinder should be within the allowable stress range, and it is not allowed to increase arbitrarily.
4.What are the characteristics using precision CNC lathe machine to complete the process of ordinary incomparable？
1. Can greatly increase productivity. After the workpiece clamping is completed, the programmed machining program is entered, and the machine tool will automatically complete the machining process. Generally, only the CNC program needs to be changed when the machining part is changed, so the machining time is greatly shortened, and the productivity can be increased by several times compared with ordinary machine tools.
2. It has high processing accuracy and the product quality is very stable. Because it is automatically processed according to the program, the machining accuracy can also be corrected and compensated by software, so it can obtain extremely high machining accuracy. At present, almost all high-end, precision, and sharp products in various enterprises are processed by CNC machine tools.
3. The high degree of automation greatly reduces the labor intensity, and to a large extent, the difference between physical labor and mental labor is diluted. The CNC machine tool operator's work process has a high scientific and technological content, which requires higher quality of the operator and higher technical requirements for the maintenance staff.
Get the latest price? We'll respond as soon as possible(within 12 hours)
