Universal clamp device for total-length finish milling of turbine blades

Abstract

The invention provides a universal clamp device for total-length finish milling of turbine blades. By adoption of the universal clamp device for total-length finish milling of the turbine blades, the problems that a traditional total-length finish milling clamp is poor in universality and high in tool cost can be solved. The universal clamp device for total-length finish milling of the turbine blades comprises a base plate. A blade crown positioning and pressing assembly is fixedly mounted at one transverse end of the base plate, and a blade root tooth-form positioning assembly and a blade root tooth-form pressing assembly are arranged at the other end of the base plate. The universal clamp device for total-length finish milling of the turbine blades is characterized in that a universal base plate is fixedly mounted on the base plate, and key grooves which are perpendicularly staggered in the transverse direction and the longitudinal direction and connected to be distributed in a latticed mode are formed in the universal base plate; and the root tooth-form positioning assembly and the blade root tooth-form pressing assembly are connected with the key grooves in the universal base plate in an assembled mode through positioning keys, and by adjusting the positions of the positioning keys in the key grooves in the universal base plate, the universal clamp device can adapt to positioning clamping of turbine blades with different air duct lengths.

Description

technical field [0001] The invention relates to the field of tooling fixtures for blade processing, in particular to a universal fixture device for fine milling of the total length of steam turbine blades. Background technique [0002] As the core component of the power plant generator set, the steam turbine blade rotates at high speed under the action of high temperature and high pressure steam in the working state. The steam turbine blade is basically assembled with the rotor through the root of the fir tree during assembly. The overall length and size of the blade crown are based on the root of the fir tree. Process measurement datum. [0003] See figure 1 , the tooth-shaped positioning mechanism 71 and the blade crown positioning block mechanism 72 in the traditional fine milling overall length fixture are directly fixed on the large base plate 80 through cylindrical pins and screws. Once the assembly is completed, it is difficult to disassemble if you want to reuse the...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a universal fixture device for the finishing milling of the total length of steam turbine blades, which can solve the problems of poor versatility and high cost of tooling existing in the traditional total length finish milling fixture

Images