Machining process of rhombic-surface tooth-shaped blade root shroud-free moving blade for steam turbine

A processing technology and moving blade technology, which is applied in the field of processing technology of rhombic surface toothed blade root and crownless moving blades for steam turbines, to achieve the effects of improving processing efficiency, improving processing accuracy, and improving processing accuracy

Inactive Publication Date: 2021-02-23
NANTONG ZHONGNENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a rhombic surface toothed root blade crownless moving blade processing technology for steam turbines, which solves the positioning reference problem during processing and the qualified judgment problem of the sawtooth-shaped inclined surface on the rhombus surface of the blade root.

Method used

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  • Machining process of rhombic-surface tooth-shaped blade root shroud-free moving blade for steam turbine
  • Machining process of rhombic-surface tooth-shaped blade root shroud-free moving blade for steam turbine
  • Machining process of rhombic-surface tooth-shaped blade root shroud-free moving blade for steam turbine

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0020] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to a machining process of a rhombic-surface tooth-shaped blade root shroud-free moving blade for a steam turbine. The machining process is characterized by comprising the following specific machining steps of S1, blanking; S2, taking out a hexagon; S3, milling; and S4, cutting a process clamping end face. According to the machining process of the rhombic-surface tooth-shapedblade root shroud-free moving blade for the steam turbine provided by the invention, a center hole is drilled first and then positioning holes are drilled symmetrically, so that a clamping step on a process clamping head is machined conveniently, the subsequent clamping standard on a machining center is guaranteed, the machining precision is improved, the problem that positioning and clamping arenot easy due to the fact that no positioning standard exists is solved, subsequent machining is detected by the assistance of a blade root ring gauge, and machining qualification is guaranteed; and single-head pliers can be positioned and clamped in the center, so that the positioning standard is guaranteed, the machining precision is improved, and the machining efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of processing a bladeless crown moving blade of a steam turbine, in particular to a processing technology for a rhombic surface toothed blade root bladeless crown moving blade for a steam turbine. Background technique [0002] In the past, because steam turbines use rhombic-shaped tooth-shaped blade roots without blade crowns, the blade roots of the blades are sawtooth-shaped on the rhombic surface, and the small shoulders of each tooth are arc-shaped and symmetrical to the center of the blade. There is no positioning on the outside of this blade. It is extremely difficult to design the processing tooling, and at the same time, the sawtooth-shaped slope on the rhombus surface of the processed blade root cannot be measured with a meter, so it is difficult to judge whether the processing size is correct or not; [0003] The machining of this type of moving blade requires the measurement of the ring gauge. Sinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/02
CPCB23P15/02
Inventor 陈凯严
Owner NANTONG ZHONGNENG MACHINERY
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