A four-axis linkage milling machine for steam turbine blades
A steam turbine blade, four-axis linkage technology, applied in the field of milling machines, can solve the problems of affecting processing, unable to ensure qualified products of moving blades, insufficient technology, etc., to achieve the effect of reducing the spacing
Active Publication Date: 2021-01-15
PAMA SHANGHAI MACHINE TOOL CO LTD
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Problems solved by technology
[0003] Because there is no measuring datum for positioning the moving blades with serrated blade roots, and the existing four-axis milling machine is not perfect in technology, it is difficult to ensure that the processed serrated shape, size, depth and other parameters must match the steam turbine impeller. Therefore, it cannot be guaranteed that each moving blade is a qualified product;
[0004] In addition, when machining the curved surface of the moving blade, it is necessary to clamp the blade root and the blade tip. However, most of the existing milling machines use three-claw discs to clamp the workpiece, and the serrated blade root is not conducive to the three-claw disc. Clamping, which is prone to tool vibration and affects processing
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art ...
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The invention discloses a four-shaft linkage milling machine for a moving blade of a steam turbine. The machine structurally comprises a machine body, a moving table, a blade root sleeve gauge, a steam-turbine blade, a clamp and a base, wherein the bottom surface of the machine body is fixedly connected with the base, the moving table is arranged in the machine body, one end of the moving table ismechanically connected with the blade root sleeve gauge, and the other end of the moving table is provided with the clamp. Compared with the prior art, the machine has the advantages of being applicable to steam-turbine blades of different root pressing widths so that the machine can be applicable to the steam-turbine blades of different sawtooth gradients; the blade root sleeve gauge can be clamped tightly to prevent the phenomenon of blade shaking; machining of the curved surfaces of the steam-turbine blade is facilitated; whether the steam-turbine blade fits blade root sleeve gauge or notcan be detected, if yes, then the steam turbine blade also fits the steam turbine impeller, and if no, machining can continue; the qualification rate of the steam-turbine blade can be greatly improved.
Description
technical field [0001] The invention relates to the technical field of milling machines, in particular to a four-axis linkage milling machine for steam turbine moving blades. Background technique [0002] The steam turbine is a rotary steam power device. The high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and is sprayed onto the blades, so that the rotor equipped with blade rows rotates and does work externally at the same time. The moving blades are one of the key components of the steam turbine. , the moving blade is generally composed of three parts: the blade shape, the blade root and the blade top. There are many shapes of the blade root. As far as the blade root is a sawtooth shape on a rhombus surface, a four-axis milling machine is often used for sawtooth processing of the blade root. . [0003] Because there is no measuring datum for positioning the moving blades with serrated blade roots, and the existing ...
Claims
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IPC IPC(8): B23C9/00B23Q3/06
CPCB23C9/00B23Q3/063
Inventor 范金忠
Owner PAMA SHANGHAI MACHINE TOOL CO LTD