Cutting machining forming method for L-shaped thin-wall ring piece

Abstract

The invention provides a cutting machining forming method for an L-shaped thin-wall ring piece. The cutting machining forming method comprises the following steps of preparing a blank, a groove cutter and a contour cutter; feeding along the inner surface of the blank by adopting the groove cutter, cutting to remove partial material on the inner surface of the blank and reserving machining allowance; feeding along the outer surface of the blank by adopting the groove cutter, cutting to remove partial material on the outer surface of the blank and reserving machining allowance; feeding along the inner surface of the blank by adopting the groove cutter, cutting to remove partial material on the inner surface of the blank and reserving machining allowance; repeating the steps for a plurality of times; cutting and removing all machining allowances on the outer surface of the blank by adopting the contour cutter; and cutting and removing all machining allowances on the inner surface of the blank by adopting the contour cutter. According to the technical scheme, the inner surface and the outer surface of the blank are cut in a staggered alternating mode, the feeding direction of a cutter is corrected, the rigidity of a workpiece is improved, deformation of the workpiece is reduced, over-cutting phenomenon during machining is avoided, and machining precision and machining quality are improved.

Description

technical field [0001] The invention belongs to the technical field of cutting processing technology, and in particular relates to a cutting processing forming method of an L-shaped thin-walled ring. Background technique [0002] In the cutting process, when the workpiece has multiple surfaces to be processed, the existing technology usually cuts one of the surfaces to be processed first, and then transforms the posture of the workpiece, using the processed surface as a positioning reference for the rest However, in the process of cutting thin-walled ring parts, due to the thin wall and poor rigidity of the workpiece, the workpiece is prone to cutting vibration or deformation under the cutting force of the cutting tool, which affects the forming quality of the workpiece and machining accuracy. In addition, in the process of cutting one of the workpiece surfaces to be processed, it is also easy to appear uneven thickness of the formed workpiece wall thickness. This is because...

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Problems solved by technology

[0002] In the cutting process, when the workpiece has multiple surfaces to be processed, the existing technology usually cuts one of the surfaces to be processed first, and then transforms the posture of the workpiece, using the processed surface as a positioning reference for the rest However, in the process of cutting thin-walled ring parts, due to the thin wall and poor rigidity of the workpiece, the workpiece is prone to cutting vibration or deformation under the cutting force of the cutting tool, which affects the forming quality of the workpiece and machining accuracy. In addition, in the process of cutting one of the workpiece surfaces to be processed, it is also easy to appear uneven thickness of the formed workpiece wall thickness. This is because, with the increase of the tool feed rate, on the one hand Vibration occurred at the upper end of the workpiece. On the other hand, the tool setting operation was only performed at the beginning of the tool cutting, and the feeding direction of the tool was deflected, resulting in less cutting at the upper end of the workpiece and more cutting at the lower end, resulting in thicker upper end and thinner end. The difference in wall thickness at the lower end is usually between 0.1 and 0.2mm, while the design tolerance range of the workpiece is 0.1mm, which affects the machining accuracy and quality

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