Although different CNC centering machines require different cutting strategies and processing sequences, there are still many technical know-hows and processing guidelines.
The guidelines for CNC centering machining are suitable for many situations:
- (1) When machining on a CNC machine tool, the spindle must first be drilled and internally rotated. Since the guide sleeve can support the rod, the processing stability can be improved.
- (2) The second step should be to rotate the outer circle on the positive axis. If possible, it is best to complete the entire depth of cut at one time to shorten the cutting time and improve machining stability.
- (3) The third step should be milling. Face milling should be given priority. Due to the limited stability and power of the spindle, the smaller the cutting force, the better, and end milling can meet this requirement.
- (4)In order to complete the final stage of machining the outer diameter of the workpiece before cutting, the core machine usually uses high-productivity reverse turning. Single pass processing helps reduce vibration.
- (5) Cutting is the last process completed on the spindle. The closer the two main shafts are, the smaller the suspension and the better the surface finish.
- (6) Finish machining the sub-spindle. This process is usually made from the inner diameter, but it can also be processed by the outer diameter.
How to increase the stability of the machining process
Generally, when using core machining, it is necessary to carry out internal turning and drilling on the main spindle, and the support of the guide sleeve on the bar is used to improve the stability of core machining.
Secondly, turning the outer circle on the main spindle, it is best to complete the full depth of cut in one pass, which can shorten the cutting time and improve the stability of processing.
Milling is required again, and face milling is preferred. In addition, the power and stability of the rotating shaft of the core machine are limited. Therefore, the lower the cutting force of the core machine, the better, and the end face milling of the core machine can meet this demand.
How to improve the processing efficiency of the walking machine
Before the cutting process, a high-productivity reverse turning is used to implement the final processing of the outer diameter of the workpiece, and the completion of the knife at one time is beneficial to reduce vibration.
The final process of cutting is completed on the main spindle, and the two spindles are close to each other, the surface finish will be better, and the smaller the overhang of the part, the better.
The core machine mainly completes the final finishing on the sub-spindle. This process of the core machine belongs to inner diameter processing, but it can also be outer diameter processing.
What are the outstanding features and advantages of core-moving machining:
- The core-moving machine is equipped with a three-axis drilling function, which can complete the drilling and tapping of the shaft end of the part. The walking machine has an ultra-long Z axis with a stroke of up to 230mm. Therefore, when the core machine is processing long parts, it can complete the full-length processing at one time, reducing the number of feeding times and improving the processing efficiency.
- Second, the tool arrangement of the walking machine adopts a two-axis control row type tool post arrangement structure, which is simple in structure, quick to change tools and extremely reliable.
- Third, the core machine is equipped with high-speed precision synchronous guide sleeves, so it can complete large-scale precision machining of steel and stainless steel parts to achieve high-quality parts high-speed cutting. It can also be equipped with various additional facilities such as automatic chip conveyors and form a flexible processing production line to complete automated processing.
- Fourth, the feeding part of the core machine can be equipped with an automatic feeder, and the receiving part can be equipped with a short part catcher and a long part catcher to realize the "one person, multiple machines" processing mode that one person operates and takes care of multiple machines. The factory saves human resources.
