Selection And Installation Of CNC Lathes


CNC lathes and turning centers are high-precision, high-efficiency automated machine tools. It has a wide range of processing properties, and can process linear cylinders, slanted cylinders, arcs and various threads. It has various compensation functions such as linear interpolation and circular interpolation, and has played a good economic effect in the mass production of complex parts. Reasonable selection of CNC lathes should follow the following principles

Selection principle

1) Preparation

Determine the technical requirements of typical parts and the batch of processed workpieces. The function that the CNC lathe should have is to make the preliminary preparations and the prerequisites for reasonable selection of CNC lathe

Meet the process requirements of typical parts

The technical requirements of typical parts are mainly the structural size, processing range and accuracy requirements of the parts. According to the accuracy requirements, that is, the dimensional accuracy, positioning accuracy and surface roughness of the workpiece, the control accuracy of the CNC lathe is selected

Choose according to reliability

Reliability is the guarantee to improve product quality and production efficiency. The reliability of CNC machine tools means that when the machine tool performs its functions under specified conditions, it runs stably for a long time without failure. That is, the mean time between failures is long. Even if there is a failure, it can be recovered in a short time and put back into use. Choose machine tools with reasonable structure, excellent manufacturing, and mass production. Generally, the more users, the higher the reliability of the CNC system.

2) Purchase of machine accessories and tools

Random machine accessories, spare parts and their supply capacity, tools are very important for the production of CNC lathes and turning centers. When selecting a machine tool, carefully consider the matching of tools and accessories.

3) Focus on the identity of the control system

Manufacturers generally choose the products of the same manufacturer, and at least the control system of the same manufacturer should be purchased, which brings great convenience to the maintenance work. Teaching units, because of the need for students to be knowledgeable, choose different systems, equipped with various simulation software is a wise choice.

4) Choose based on performance price ratio

Do not idle, waste, and do not choose functions that are not related to your own needs.

5) Protection of machine tools

When required, the machine tool can be equipped with fully enclosed or semi-enclosed protective devices and automatic chip removal devices.

When choosing CNC lathes and turning centers, the above-mentioned principles should be taken into consideration.

2. Installation method:
1) Lifting and transportation
The lifting and positioning of the machine tool should use the special lifting tools provided by the manufacturer, and other methods are not allowed. No special lifting tools are needed, and wire ropes should be used for lifting and positioning in accordance with the instructions.
2) Foundation and location
The machine tool should be installed on a solid foundation and located away from vibration sources; avoid sunlight and heat radiation; place in a dry place to avoid the effects of humidity and airflow. If there is a vibration source near the machine tool, an anti-vibration groove must be set around the foundation.
3) Installation of the machine
The machine tool is placed on the foundation, it should be leveled in a free state, and then the anchor bolts should be evenly tightened. For ordinary machine tools, the level reading does not exceed 0.04 / 1000mm. For high-precision machine tools, the level reading exceeds 0.02 / 1000mm. When measuring the installation accuracy, it should be performed at a constant temperature, and the measurement tool needs to be used for a certain period of time. When installing the machine tool, make every effort to avoid the installation method that causes the machine tool to have forced deformation. When the machine tool is installed, some parts of the machine tool should not be removed casually. The removal of the parts may cause an important new distribution of the internal stress of the machine tool, thereby affecting the accuracy of the machine tool.
3. Preparations before commissioning
After the machine’s geometric accuracy inspection is qualified, the whole machine needs to be cleaned. Use cotton or silk cloth impregnated with cleaning agent. Do not use cotton or gauze. Clean out the anti-rust oil or anti-rust paint that is applied to protect the guide rail surface and the machining surface when the machine tool leaves the factory. Clean the dust on the outer surface of the machine. Coat the sliding surface and working surface with the machine tool to make the oil.
Carefully check whether all parts of the machine tool are filled with oil as required, and whether the cooling box is full of coolant. Whether the oil in the hydraulic station and automatic lubrication device of the machine tool reaches the position specified by the oil level indicator.
Check whether the switches and components in the electrical control box are normal, and whether the plug-in integrated circuit boards are in place.
Electrically start the centralized lubricating device, so that each lubricating part and the lubricating oil path are filled with lubricating oil. Make all preparations before the machine parts move.