Method for machining high-precision hexagonal shaft through ordinary numerical control boring machine

Abstract

The invention relates to a method for machining a high-precision hexagonal shaft through an ordinary numerical control boring machine. A worktable is arranged in the machining range of the ordinary numerical control boring machine; two V-shaped bases are fixed on the worktable; round parts on two ends of a workpiece are separately arranged on the two V-shaped bases, and the levelness and perpendicularity of the workpiece are detected; a hexagonal aligning template is fixed on the end surface of one end of the workpiece; the hexagonal aligning template is a regular hexagon plate; the symmetry center of the hexagonal aligning template is located on the axis of the workpiece; whether the corresponding edge lines of the hexagonal aligning template rotate to be perpendicular or not is detected; the workpiece is tightly pressed after the corresponding edge lines of the hexagonal aligning template rotate to be perpendicular; corresponding surfaces of the workpiece are machined by the ordinary numerical control boring machine through a milling cutter; and firstly a pair of parallel surfaces are machined, and then the other surfaces are sequentially machined. By adopting the method, the rotation angle of the workpiece can be precisely controlled; the machining is precise; the operation is simple; and the cost is low.

Description

Technical field [0001] The invention belongs to the field of mechanical processing, and specifically relates to a method for processing a high-precision hexagonal shaft with a common numerical control boring machine. Background technique [0002] In the field of mechanical processing, it is difficult to process a high-precision hexagonal axis. If an ordinary machine tool is used, the rotation angle of the workpiece, the feed depth of the milling cutter and the movement amount of the milling cutter cannot be accurately controlled, and the processing accuracy is not high; if a CNC boring machine is used, it can Accurately control the feed depth of the milling cutter and the movement of the milling cutter, but the workpiece must be installed on a large CNC boring machine to have a proprietary workpiece rotating table to accurately control the rotation angle of the workpiece, or directly use a multi-axis CNC boring machine ( The workpiece does not move, and the milling cutter can com...

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Problems solved by technology

[0002] In the field of mechanical processing, it is difficult to process high-precision hexagonal axes. If ordinary machine tools are used, the rotation angle of the workpiece, the feed depth of the milling cutter and the movement of the milling cutter cannot be precisely controlled, and the machining accuracy is not high; if a CNC boring machine is used, it can be Precisely control the feed depth of the milling cutter and the movement of the milling cutter, but the workpiece must be installed on a large CNC boring machine to have a proprietary workpiece rotation table to accurately control the rotation angle of the workpiece, or directly use a multi-axis linkage CNC boring machine ( The workpiece does not move, and the milling cutter completes the processing under multi-axis linkage according to the required shape) to complete accurate machining. In actual production, multi-axis linkage CNC boring machines and large CNC boring machines are not only costly but also high in maintenance costs, while ordinary CNC boring machines (Small size, no proprietary workpiece rotary table, milling cutter cannot be multi-axis linkage) Low cost, therefore, from the perspective of cost saving, it is necessary to design a method for machining high-precision hexagonal axes on ordinary CNC boring machines

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