Figure 2 Machining center on the cylinder production line 
Figure 3 The engine block is made of aluminum
We have carried out in-depth analysis on the specific conditions of the rough machining of the cylinder bore in order to obtain a better machining plan and improve the roughing efficiency of the cylinder bore.
The actual machining condition of the cylinder bore is: machining using a three-blade boring tool (see Figure 4), 75° lead angle, 0° front angle, and the blade is made of CBN material. Specific cutting parameters: cutting speed = 400m / min, feed per tooth = 0.18mm, depth of cut = 2.5mm; processing time 42.5s.
Figure 4: The traditional tool used for rough cylinder bores - three-blade boring tool
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