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Fixture used for processing small moving blade in turbine and processing method thereof

A technology of moving blades and steam turbines, which is applied to metal processing machinery parts, manufacturing tools, metal processing equipment, etc., can solve the problems of limited processing accuracy, low processing efficiency, and poor application of superior performance of machine tools, etc., and achieve processing costs The effect of reducing and improving processing efficiency and high one-time inspection rate

Active Publication Date: 2010-07-28
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current processing technology has not been improved accordingly, and the original processing technology is still followed. Correspondingly, the fixture has not been improved, and the old structure fixture is still used, resulting in low processing efficiency, limited processing accuracy, and superior performance of the machine tool. not well applied

Method used

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  • Fixture used for processing small moving blade in turbine and processing method thereof
  • Fixture used for processing small moving blade in turbine and processing method thereof
  • Fixture used for processing small moving blade in turbine and processing method thereof

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Embodiment Construction

[0023] see figure 1 , figure 2 , image 3 Summary of the invention: the present invention is a kind of processing fixture of small and medium movable blade, and this fixture can realize the one-time clamping of workpiece on the numerical control machine tool of more than five axes. The clamp includes a transmission body 3 and its mounting plate 1 . The transmission body 3 is fixed on the mounting plate 1, and the end surface of the transmission body 3 has a dovetail groove for installing blade blanks. The blade blank 4 installed on the fixture has a technical tenon, which is dovetail-shaped and fits with the dovetail groove of the fixture. The transmission body 3 is provided with a linear hydraulic cylinder 7, and its piston rod 8 corresponds to the above-mentioned technical tenon. The transmission body 3 is also provided with an accumulator 2, a pressure charging port 9 and an overflow safety valve 10, and the linear hydraulic cylinder 7, the accumulator 2, the pressure ...

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Abstract

The invention provides a fixture used for processing a small moving blade in a turbine. The fixture comprises a transmission body and an installation disk of the transmission body, wherein the transmission body is fixed on the installation disk; a dovetail groove is arranged on the end surface of the transmission body for installing a blade blank; the blade blank is provided with a process tenon which is of dovetail shape and is adaptive with the dovetail groove; a linear hydraulic cylinder is arranged in the transmission body, and a piston rod of the linear hydraulic cylinder corresponds to the process tenon; an energy storage and a pressurizing port are arranged on the transmission body; the pressurizing port is connected with a hydraulic station; the hydraulic station is used for pressurizing the linear hydraulic cylinder and the energy storage simultaneously by the pressurizing port; and the energy storage is used for maintaining the system pressure. The invention can realize the one-time clamping of a workpiece on a milling machine, has strong commonality and saves the cost of the fixture; the modularization centralized processing can be realized, so that the processing technique is simple, thereby greatly improving the working efficiency, shortening the production period, improving the processing accuracy and lowering the labor intensity; in addition, the processing period is shortened by 30%, and the fixture in category II can be saved by 40%.

Description

technical field [0001] The invention relates to the processing of blades in industries such as steam turbines and blowers, in particular to the design of a jig for processing small moving blades in steam turbines and the improvement of the blade processing method. Background technique [0002] In the past, in the machining of small and medium-sized moving blades (the length of the steam channel profile is within 350mm) in the steam turbine manufacturing industry, due to the limitation of the machine tool capacity, the workpiece had to be clamped three times on three different machine tools to complete the machining of the blades. Therefore, three datum surfaces must be processed first, and as the positioning datum of the secondary clamping, at least three sets of fixtures with different structures are required. As a result, there are many types of fixtures used in the blade processing process; and each fixture is designed for the specific specifications of the blades, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00
Inventor 文举钟成明刘文泽
Owner DONGFANG TURBINE CO LTD
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