Machining method of double-journal thin-walled vane part

Abstract

The invention relates to a machining method of a double-journal thin-walled vane part. The machining method comprises the steps that a workpiece is prepared, a boss A and a boss B on the two sides ofthe workpiece are subjected to rough machining, the boss A is subjected to finish machining to form a journal A, the boss B is subjected to semi-finish machining, the workpiece is checked, a dual-drive five-axis simultaneous numerical-control milling machine is used for conducting finish machining on a thin-walled vane body on the workpiece, the boss B is subjected to finish machining to form a journal B, burrs on the outer surface of the finished part are treated, and the part is checked and put in storage. By the adoption of the technical scheme, the pelvic surface and the back side of the vane body are machined through the dual-drive five-axis simultaneous numerical-control milling machine, clamping force is applied to the journals on the two sides of the vane body in the opposite directions of deformation, a workblank is effectively positioned, then the journal B on the vane body is subjected to finish machining and forming, several times of checking are conducted during machiningalternately, the product quality is guaranteed, the coaxial error between the journal A and the journal B is decreased, and the manufacturing precision and qualified rates of finished products are improved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a processing method for double journal thin-walled blade parts. Background technique [0002] In recent years, the machinery and equipment manufacturing industry has developed rapidly. People have designed and manufactured a variety of machinery and equipment to facilitate people's production, life and other activities. Machinery and equipment are composed of parts of different shapes, sizes and functions. , a class of thin-walled blade parts with double journals is widely used in the field of aviation and aerospace industries. The outer surface of such double-journal thin-walled blade parts is generally used in aero-engines. With the development of aero-engine technology, this The manufacturing precision requirements of similar double-journal thin-walled blade parts are also increasing day by day. In the prior art, the processing and manufacturing of such double-jo...

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Problems solved by technology

[0002] In recent years, the machinery and equipment manufacturing industry has developed rapidly. People have designed and manufactured a variety of machinery and equipment to facilitate people's production, life and other activities. Machinery and equipment are composed of parts of different shapes, sizes and functions. , a class of thin-walled blade parts with double journals is widely used in the field of aviation and aerospace industries. The outer surface of such double-journal thin-walled blade parts is generally used in aero-engines. With the development of aero-engine technology, this The manufacturing precision requirements of similar double-journal thin-walled blade parts are also increasing day by day. In the prior art, the processing and manufacturing of such double-journal thin-walled blade parts is generally processed by a single-drive five-axis linkage CNC milling machine. However, due to the blade body wall It is extremely difficult to clamp and position the workpiece, and the cutting heat generated during the machining process often causes a large deformation of the blade body, and the journal set on the side of the blade body is clamped by the center hole positioning In the process of processing the profile, the lower journal is affected by the cutting force, which is prone to uneven force in the two directions of the basin surface and the back of the blade body, resulting in large deformation, resulting in the same journal on both sides of the blade body. The axial error is large, resulting in a decline in the qualified rate of products. According to statistics, the qualified rate of double-spigot thin-walled blade parts processed by this processing method is only about 70%.

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