Clamping device for engine blades of fir-shaped tenons

Abstract

The invention discloses a clamping device for engine blades of fir-shaped tenons. The clamping device comprises an upper rear rotating block and a lower rear rotating block, the right side of the upper rear rotating block is hinged to the right side of the lower rear rotating block, and the left sides of the rear rotating blocks are separately hinged to front rotating blocks; fir-shaped teeth arearranged between the front rotating blocks, two pairs of connecting plates are separately arranged on the left side and the right side of each front rotating block, and a bolt hole is formed in each connecting plate; and the connecting plates can rotate at an angle, and bolts penetrate through the bolt holes to fix blades in the fir-shaped teeth of the front rotating blocks. The clamping device for engine blades of fir-shaped tenons has the beneficial effects that the device can adapt to clamping on engine blades of different fir-shaped tenons at different angels; and the front rotating blockscan be disassembled to selectively adapt to difference, and the device is suitable for manufacturing front rotating blocks which are shaken and impacted.

Description

technical field [0001] The invention relates to the field of test clamping devices, in particular to an engine blade clamping device with a fir-tree tenon. Background technique [0002] After the design and processing of the blade is completed, in order to understand the vibration characteristics and fatigue characteristics of the blade, and to verify whether the vibration and fatigue performance of the blade meet the design requirements, it is necessary to conduct modal tests and fatigue tests on the blade. The engine blade with fir tree tenon is a relatively common blade structure. The common clamping device has two clamping blocks with a fir tree-shaped clamping surface between the clamping blocks to clamp the blade, but in long-term use Among them, the clamping block cannot conveniently adjust the clamping direction, there are only two degrees of freedom of clamping or loosening, which cannot meet the clamping of engine blades with fir tree-shaped tenons at different ang...

AI Technical Summary

Problems solved by technology

The engine blade with fir tree tenon is a relatively common blade structure. The common clamping device has two clamping blocks with a fir tree-shaped clamping surface between the clamping blocks to clamp the blade, but in long-term use Among them, the clamping block cannot easily adjust the clamping direction, only two degrees of freedom are clamped or loosened, which cannot meet the clamping of engine blades with fir tree-shaped tenons at different angles

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