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The Difference Between CNC Machining Center and CNC Lathe

The Difference Between CNC Machining Center and CNC Lathe

2022-07-06 11:29:13

Both CNC machining centers and CNC lathes belong to CNC machine tools. Their processing performance is higher than that of ordinary machine tools. Their advantage is that they have a high degree of automation. The lathe of the system is called a CNC lathe, a milling machine with a CNC system is called a CNC milling machine, and a tool magazine is installed on the CNC milling machine, which is called a machining center.

 

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The difference between CNC machining center and CNC lathe

 

However, CNC lathes and CNC machining centers are different in the number of motion axes. CNC lathes control two motion axes, while machining centers are at least three-axis control linkage or four-axis or five-axis linkage.

 

Looking at the difference between the two in terms of processing range, CNC lathes are mainly used to process rotary parts, while machining centers are used to process complex types of parts such as surface grooves and so on.

 

From the perspective of the tool magazine form, the CNC lathe does not have a tool magazine but has a tool holder on the bed. The CNC machining center is equipped with a manipulator with a tool magazine, and can be equipped with tools of various processing forms.

 

The fundamental difference between a CNC machining center and a CNC lathe is that the machining center has the ability to automatically exchange machining tools. By selecting tools for different purposes installed on the tool magazine, multi-process machining can be realized by automatically exchanging machining tools in one clamping. This machining process reduces the number of workpiece installations and ensures machining accuracy. The CNC lathe can complete one process of processing.

 

The basic codes of programming of the two types of CNC lathes and CNC machining centers are mostly the same, but some special instructions may not be common between systems. Specific circumstances should be treated according to actual requirements.

 

Precautions for CNC machine tool program operation

 

High-efficiency special-purpose machine tools also have their processing limitations. Only by rationally applying suitable processing machine tools can the high-efficiency and special-purpose crankshaft processing machine tools be exerted, thereby improving the processing efficiency of the process.

 

  • When the crankshaft journal has an undercut groove, the CNC internal milling machine cannot process it; if the crankshaft journal has an undercut groove in the axial direction, neither the CNC high-speed external milling machine nor the CNC internal milling machine can process it, but the CNC lathe-turn Pulling machine can be very convenient for processing.

 

  • When the side of the balance block needs to be processed, the CNC internal milling machine should be the first choice, because the internal milling cutter head is positioned on the outer circle and has good rigidity, especially suitable for processing large forged steel crankshafts; at this time, it is not suitable to use CNC lathe - lathe Machine tool, because in the case that the side of the balance block of the crankshaft needs to be processed, it is processed by a CNC lathe-lathe machine. The side of the balance block is cut intermittently, and the crankshaft rotates at a high speed. serious.

 

  • When there is no undercut groove on the journal of the crankshaft, and the side of the balance block does not need to be processed, in principle, several types of machine tools can be processed. When machining car crankshafts, the main journal should be CNC lathe-drawn machine, and the connecting rod journal should be CNC high-speed external milling machine, which should be the best efficient machining choice; when processing large forged steel crankshafts, the main journal and connecting rod are both It is more reasonable to use CNC internal milling machine tools.

 

Conclusion

 

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