How Do I Choose the Best Small Milling Machine?
According to the size of the part to be processed, a small-sized lifting desktop CNC milling machine is selected, and its table width is mostly below 400mm. It is most suitable for small and medium-sized parts processing and contour milling tasks of complex shapes. Larger specifications such as gantry-type milling machines, the working table is above 500-600mm, which is used to solve the processing needs of large-sized and complex parts.
According to the precision requirements of the processed parts, the accuracy standards of CNC milling machines have been formulated in China. Among them, CNC vertical milling machine lifting table milling machines have professional standards. The standard stipulates that the positioning accuracy of its linear motion coordinates is 0.04 / 300mm, the repeat positioning accuracy is 0.025mm, and the milling precision is 0.035mm. In fact, the accuracy of machine tools has considerable reserves, which is about 20% smaller than the national standard tolerance. Therefore, from the perspective of precision selection, general CNC milling machines can meet the processing needs of most parts. For parts with high accuracy requirements, you should consider choosing a precision CNC milling machine.
According to the processing characteristics of the machined parts, select the steps for the machining parts that are frame-shaped planes or unequal heights, then use a point --- linear CNC milling machine. If the machining parts are curved contours, they should be based on the geometry of the curved surface. The shape determines the system that selects two coordinate linkage and three coordinate linkage.
It can also add CNC indexing head or CNC rotary table based on the general CNC milling machine according to the requirements of part processing. At this time, the system of the machine tool is a four-coordinate CNC system, which can process spiral grooves and blade parts.
According to the batch or other requirements of parts, for large batches, users can use special milling machines. If it is a small and medium batch, and it is often repeated and put into production periodically, then the CNC milling machine is very suitable, because the multi-tool fixtures, programs, etc. that are prepared in the first batch can be stored and reused.
In the long run, a milling machine with a high degree of automation replaces an ordinary milling machine, and the trend of reducing labor and increasing productivity is inevitable.
Installation of CNC milling machine Generally, CNC milling machine is designed with mechatronics. From the manufacturer to the user, it is shipped by the whole machine without disassembly and packaging. Therefore, after receiving the machine tool, the user only needs to perform according to the instructions. Note the following:
After unpacking the machine, first find the random technical file according to the packaging mark, and check the accessories, tools, spare parts, etc. according to the packing list in the technical file. If the contents of the box do not match the packing list, you should contact the manufacturer in a timely manner. Then, read the instructions carefully and follow the instructions for installation.
Lifting According to the lifting diagram in the manual, place wooden blocks or thick cloths at appropriate positions to prevent the wire rope from hitting the paint and the work surface. During lifting, the center of gravity of the machine tool should be minimized. If the tortoise of the CNC machine tool is separated, there is usually a lifting ring on the top of the electric cabinet for lifting.
Selection principle of CNC milling machine
Right!
- According to the size of the part to be processed, a small-sized lifting desktop CNC milling machine is selected, and its table width is mostly below 400mm. It is most suitable for small and medium-sized parts processing and contour milling tasks of complex shapes. Larger specifications such as gantry-type milling machines, the working table is above 500-600mm, which is used to solve the processing needs of large-sized and complex parts.
According to the precision requirements of the processed parts, the accuracy standards of CNC milling machines have been formulated in China. Among them, CNC vertical milling machine lifting table milling machines have professional standards. The standard stipulates that the positioning accuracy of its linear motion coordinates is 0.04 / 300mm, the repeat positioning accuracy is 0.025mm, and the milling precision is 0.035mm. In fact, the accuracy of machine tools has considerable reserves, which is about 20% smaller than the national standard tolerance. Therefore, from the perspective of precision selection, general CNC milling machines can meet the processing needs of most parts. For parts with high accuracy requirements, you should consider choosing a precision CNC milling machine.
According to the processing characteristics of the machined parts, select the steps for the machining parts that are frame-shaped planes or unequal heights, then use a point --- linear CNC milling machine. If the machining parts are curved contours, they should be based on the surface geometry. The shape determines the system that selects two coordinate linkage and three coordinate linkage.
It can also add CNC indexing head or CNC rotary table based on the general CNC milling machine according to the requirements of part processing. At this time, the system of the machine tool is a four-coordinate CNC system, which can process spiral grooves and blade parts.
According to the batch or other requirements of parts, for large batches, users can use special milling machines. If it is a small and medium batch and it is often repeated and put into production periodically, then the CNC milling machine is very suitable, because the multi-tool fixtures, programs, etc. prepared in the first batch can be stored and reused.
In the long run, a milling machine with a high degree of automation replaces an ordinary milling machine, and the trend of reducing labor and increasing productivity is inevitable.
Installation of CNC milling machine Generally, CNC milling machine is designed with mechatronics. From the manufacturer to the user, it is shipped by the whole machine without disassembly and packaging. Therefore, after receiving the machine tool, the user only needs to perform according to the instructions. Note the following:
After unpacking the machine, first find the random technical file according to the packaging mark, and check the accessories, tools, spare parts, etc. according to the packing list in the technical file. If the contents of the box do not match the packing list, you should contact the manufacturer in a timely manner. Then, read the instructions carefully and follow the instructions for installation.
Lifting According to the lifting diagram in the manual, place wooden blocks or thick cloths at appropriate positions to prevent the wire rope from hitting the paint and the work surface. During lifting, the center of gravity of the machine tool should be minimized. If the tortoise of the CNC machine tool is separated, there is usually a lifting ring on the top of the electric cabinet for lifting.