Dosage of CNC Machining cutting is decided really

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The principle of dosage of logical choice cutting is, when rough machining, give priority to in order to improve productivity commonly, but also should consider economy and finished cost; When semifinishing machining and finish machining, answer to fall in the premise that assures to machine quality, efficiency of cutting of give attention to two or morethings, economy and finished cost. Particular numerical value should according to dosage of machine tool manual, cutting manual, combine experience and decide. T of ⑴ cutting deepness. Below the condition that allows in machine tool, workpiece and cutting tool stiffness, t is equal to mental allowance, this is a when improve productivity significant step. To assure the treatment precision of the spare parts and exterior surface roughness, should leave certain surplus to have precision work commonly. The finish machining surplus of numerical control machine tool can be less than general accuracy machine tool slightly. L of ⑵ cutting width. General L and D of cutting tool diameter become direct ratio, become inverse ratio with cutting deepness. In economy CNC Machining, the extraction of general L is worth limits to be: L= (0.

6 ～ 0.

9) D. V of ⑶ cutting speed. Raising V also is a measure that improves productivity, but the relationship of V and cutting tool durability is closer. As the accretion of V, cutting tool durability drops quickly, the choice of reason V basically depends on cutting tool durability. Additional, cutting speed and treatment material also have very big concern, use for example when establishing milling cutter milling to add up to King Kong 30CrNi2MoVA, v can use 8m/min left and right sides; And with when establishing aluminium alloy of milling cutter milling likewise, above of V optional 200m/min. N(r/min) of rotate speed of ⑷ main shaft. Main shaft rotate speed comes according to cutting speed V commonly make choice of. Computational formula is: In type, d is cutting tool or workpiece diameter (Mm) . Rotate speed of common stock main shaft writes melody on the Control Panel of numerical control machine tool (fold) switch, can undertake to main shaft rotate speed in machining a process multiple is adjusted rectifying. VF of ⑸ feed speed. VF should be mixed according to the treatment precision of the spare parts requirement of exterior surface roughness and cutting tool and workpiece data will choose. The addition of VF also can improve manufacturing efficiency. When demand of treatment surface surface roughness is low, VF can choose some more greatly. In machining a process, VF also can pass the switch writing melody on machine tool Control Panel to undertake be adjustmented artificially, but speed of the biggest feed should get equipment stiffness and feed system performance sexual limitation. Producing as numerical control machine tool actual medium wide application, numerical control process designing has become one of crucial issues in CNC Machining. In the work out process of numerical control program, want cutting tool of instant below interactive condition choice and affirmatory cutting dosage. Accordingly, process designing personnel must be familiar with the affirmatory principle of the selection method of cutting tool and cutting dosage, assure the treatment quality of the spare parts and treatment efficiency thereby, produce the advantage of numerical control machine tool adequately, raise the economic benefits of the enterprise and manufacturing level. CNC Milling CNC Machining