End face processig method for specially shaped column

Abstract

The end face processing method for specially shaped column includes the following steps: 1. machining one specially shaped column workpiece, and defining one reference radius in the first end face, with the reference radius being greater than the distance between any one point in the edge of the first end face and the rotating axis; 2. setting one outwards extending filling block to the side of the first end face, with the distance between any outer edge point of the filling block and the rotating axis being not smaller than the reference radius; 3. rotation cutting the first end face with filling block continuously; and 4. eliminating the filling block after finishing the cutting. The said processing method can ensure the machining precision and no damage to the cutter.

Description

【Technical field】 [0001] The invention relates to a processing method, in particular to a method for processing the end face of a special-shaped column processing part capable of forming a precisely processed end face. 【Background technique】 [0002] Such as figure 1 As shown, an existing special-shaped optical lens mold core 1 has an end surface 101 to be turned into a spherical or aspheric surface, and four side surfaces 102 connected to the end surface 101. The end surface 101 has a surface connected to the side surfaces 102. The formed peripheral edge 1011, when turning the end face 101, generally drives the mold core 1 to rotate and cooperates with a tool 2 to feed, so as to turn the end face 101 to a predetermined precision. [0003] Although the above-mentioned turning method utilizes the tool 2 to achieve the purpose of turning the end face 101, but this turning method has the following shortcomings: [0004] Such as figure 2 As shown, when the turning trajectory...

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Problems solved by technology

[0004] like figure 2 As shown, when the turning track 3 of the tool 2 is within the range covered by the peripheral edge 1011, although the tool 2 can maintain a continuous turning state with the end face 101, it will not collide with the side surfaces 102, However, once the turning track 4 of the tool 2 exceeds the range covered by the peripheral edge 1011 and intersects the peripheral edge 1011, the tool 2 will form two sections of continuous turning on the end surface 101 during the process of forming the turning track 4 local trajectory of and and two discontinuous turning partial trajectories and And, when track point I, III, because this cutting tool 2 all is transformed into the state that just wants continuous turning this end face 101 by the state of discontinuous turning, therefore, this tool 2 all can be with this tool 2 when track point I, III. When the side surfaces 102 collide, the cutter 2 will break away from the side surfaces 102 in an instant at the trajectory points II and IV. In this way, not only the cutter 2 may be damaged, but the peripheral edge 1011 will also be damaged at the trajectory points I and IV. II, III, and IV form defects and roughness, which affects the surface accuracy of the end face 101

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