供應150-C30FBD-3;
150-C30FBD-3。
根據模具加工的特點,以及數控機床新工藝的要求,建議在加工工藝上采取一些措施,以便發揮機床的高精度、率的特點,保證模具加工質量。
(1) 要精選材料,毛坯材質要均勻,目前有些材料可以做到在粗加工后變形量比較小。鑄鍛件要經過高溫時效,消除內應力,使材料經過多工序加工之后變形較小。
(2) 合理安排工序,精化零件毛坯。在模具的生產過程中不可能靠一兩臺數控銑床完成零件的全部加工工序,而是要與普通銑床、車床等通用設備配合使用。所以在工序的安排上應考慮生產節拍和生產能力是否平衡,在保證高精度、率的前提下,數控加工和普通加工的經濟性是否合理,以及數控加工和通用設備加工的各自特長,因此在數控加工前的毛坯應盡量精化,除去鑄鍛,熱處理產生的氧化硬層,只留少量加工余量,加工出基準面、基準孔等。
(3) 數控機床的剛性強、熱穩定性好,功率大,在加工中盡可能選擇較大的切削用量,這樣既可滿足加工精度要求又提高了效率。
(4) 有些零件由于切削內應力、熱變形、裝夾位置的合理性,夾具夾緊變形等原因,必須多次裝夾才能完成。不能一味追求快,而不顧加工的合理性。
(5) 加工工序的順序建議為:
①重切削、粗加工、去除零件毛坯上大部分余量。如粗銑大平面、粗銑曲面、粗鏜孔等。
②加工發熱量小,精度要求不高的內容。如半精銑平面,半精鏜孔等。
③在模具加工中精銑曲面。
④打中心孔、鉆小孔、攻螺紋。
⑤精鏜孔、精銑平面、鉸孔。
注意在重切削、精加工時要有充分的冷卻液,粗加工后至精加工之前要有充分的冷卻時間,在加工中盡量減少換刀次數,減少空行程移動量。

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注:聯系我時,請說是在“傲立機床網”上看到的,謝謝!