【摘要】：微細(xì)刀具的制造方法是保證微細(xì)銑刀制造精度的技術(shù)關(guān)鍵。從砂輪與工件的相對(duì)運(yùn)動(dòng)關(guān)系出發(fā),依據(jù)砂輪與工件的嚙合條件,分析砂輪表面法矢量在母線交點(diǎn)處的變化情況,建立砂輪與螺旋溝槽完整公共接觸線方程,由接觸線圍繞工件軸線回轉(zhuǎn)形成回轉(zhuǎn)面的軸向截形,推導(dǎo)出銑刀軸向截形的廓形方程,同時(shí)根據(jù)廓形方程仿真出溝槽截形,據(jù)此分析了安裝參數(shù)對(duì)截形的誤差敏感度。在刃磨微細(xì)銑刀螺旋溝槽過(guò)程時(shí),提出采用Z軸插補(bǔ)對(duì)撓曲進(jìn)行補(bǔ)償?shù)姆椒?通過(guò)計(jì)算刃磨過(guò)程的撓曲變形量,相應(yīng)地在工件的軸向位置補(bǔ)償變形量。實(shí)驗(yàn)表明,補(bǔ)償后實(shí)得微細(xì)銑刀的前角和芯厚與仿真的銑刀螺旋槽幾何參數(shù)吻合良好。
[Abstract]:The manufacturing method of micro cutting tools is the key to ensure the manufacturing accuracy of micro milling cutters. Based on the relative motion relationship between the grinding wheel and the workpiece, according to the meshing condition between the grinding wheel and the workpiece, the change of the normal vector on the surface of the grinding wheel at the intersection of the busbar is analyzed, and the complete common contact line equation between the grinding wheel and the spiral groove is established. The axial section of the rotary surface is formed by rotating the contact line around the axis of the workpiece, and the profile equation of the axial section of the milling cutter is derived. According to the profile equation, the groove section is simulated, and the error sensitivity of the installation parameters to the section is analyzed. In the process of grinding the spiral grooves of micro-milling cutters, a method of compensating the deflection by Z-axis interpolation is put forward. The deflection of the workpiece is compensated by calculating the flexural deformation of the grinding process and compensating the deformation in the axial position of the workpiece accordingly. The experimental results show that the pre-angle and core thickness of the compensated micro-milling cutter are in good agreement with the geometric parameters of the spiral groove of the simulated milling cutter.
【作者單位】： 北京理工大學(xué)先進(jìn)加工技術(shù)國(guó)防重點(diǎn)學(xué)科實(shí)驗(yàn)室;北京精密機(jī)電控制設(shè)備研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51375055)
【分類號(hào)】：V261

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