Machining tool and process for thin-wall long barrel part with window

Abstract

A machining tool for a thin-wall long barrel part with a window comprises a positioning core, a pressing plate, a gasket, a bolt and a positioning barrel. The positioning core is arranged on one sideof the pressing plate; the gasket is arranged on the other side of the pressing plate; the bolt is arranged on the side, away from the pressing plate, of the gasket; and the positioning barrel is arranged on the same side of the positioning core. A machining process for the thin-wall long barrel part with the window comprises the steps that an outer ring, a groove and an inner hole are subjected to rough turning; natural aging treatment is conducted; the outer ring, the groove and the inner hole are subjected to finish turning; and flanging burrs generated, at the window, by the machined partare removed. The machining tool and process have the beneficial effects that (1) the tool is high in pertinence, the final machining effect is remarkable, positioning is accurate, and deviation is small; (2) the positioning accuracy of the part is further strengthened by the bolt; and (3) through the newly-designed process route, the problems that in the machining process of the thin-wall part, parts deform, linear dimensional tolerance is instable, and the roughness of the machining surface is hard to reach can be well solved.

Description

technical field [0001] The invention relates to the field of part processing, in particular to a thin-walled windowed long tube part processing tool and technology. Background technique [0002] At present, the machining of thin-walled and long-tube parts with windows with small tolerance zone, the blank of this kind of product is cast molding (material: GP240GH / 1.0619), and there are many models of this kind of product, the difficulty of machining this kind of product lies in: 1. Wall Thick and thin, easy to deform when clamping, and difficult to control the tolerance zone of linear dimensions (line tolerance range: 0.039-0.054mm); 2. Deep hole intermittent cutting, easy to give up the knife during processing, and the roughness of the processed surface (Ra: 1.6μm) It is difficult to guarantee; 3. The flanging burr at the window is too large after processing, and there is a risk of scratching the processed surface when removing the burr. [0003] The existing conventional t...

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Problems solved by technology

[0002] At present, the machining of thin-walled and long-tube parts with windows with small tolerance zone, the blank of this kind of product is cast molding (material: GP240GH / 1.0619), and there are many models of this kind of product, the difficulty of machining this kind of product lies in: 1. Wall Thick and thin, easy to deform when clamping, it is difficult to control the linear dimension tolerance zone (line tolerance range: 0.039-0.054mm); 2. Deep hole intermittent cutting, easy to give up the tool during processing, and the roughness of the processed surface (Ra: 1.6μm) It is difficult to guarantee; 3. The flanging burr at the window is too large after processing, and there is a risk of scratching the processed surface when removing the burr

[0003] The existing conventional technology cannot solve the problems of deformation during processing, linear dimension out of tolerance and unsatisfactory roughness. Surface roughness, etc.

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