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                                                    機床剛度的作用
                                                    作者:    發布于:2013-12-24 10:12:33    文字:【】【】【

                                                        機床剛度在機床中起著重要的作用,它直接關聯機床整體結構的抵抗變形的能力,安陽機床指出,在加工過程中,承受多種外力的作用,包括運動部件和工件的自重、切削力、驅動力、加減速時的慣性力、摩擦阻力等。機床的各部件在這些力的作用下將產生變形,如各基礎件的彎曲和扭轉變形。支承構件的局部變形,固定連接面和運動嚙合面的接觸變形等。這些變形都會直接或間接地引起刀具與工件之間產生相對位移,破壞刀具和工件原來所占有的正確位置,從而影響機床的加工精度。

                                                        安陽機床經統計,機床剛度根據所受載荷力的不同,可分為靜剛度和動剛度。機床靜剛度是指在穩定載荷(如主軸箱、拖板的自重、工件重量等)作用下抵抗變形的能力,它與系統構件的幾何參數及材料彈性模量有關。機床的動剛度是指在交變載荷(如周期變化的切削力、齒輪嚙合等傳動系統沖擊力、旋轉運動的動態不平衡力、間歇進給不穩定力等)作用下阻止振動的力,它與系統構件的阻尼率有關。

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