Bending tool and disassembling method of rotor check ring

Abstract

The invention provides a bending tool and a disassembling method of a rotor check ring, which can apply a tensile force consistent with the deformation direction of a bent workpiece to gradually bend the workpiece. In the bending tool, an arc-shaped part of a support is provided with a guide arc surface and a guide groove formed in the arc length direction of the guide arc surface; the drag hook comprises a rod part penetrating through the guide groove and a hook; the fixing assembly is fixed on the rod part, and the guide matching part of the fixing assembly is movably matched on the guide arc surface; the guide center of the guide arc surface is arranged to be concentric with the reference arc, in the process that the drag hook rotatably bends, the rod part is kept in the tangential direction of the reference arc, and the position, making contact with the free end of the workpiece, of the hook is kept on the reference arc. The disassembling method of the rotor retainer ring adopts the bending tool, and comprises the following steps: fixing the support on the rotor disc, and enabling the guide center to coincide with the bending rotation center of the bendable baffle plate; the hook is used for hooking the free end of the bendable separation blade; the pull hook is operated to pull the bendable blocking piece to be bent until the blocking of the tenon is avoided.

Description

technical field [0001] The invention relates to the technical field of engine assembly, in particular to a bending tool and a method for disassembling a rotor retaining ring. Background technique [0002] A new type of engine compressor rotor 100 such as figure 1 with 2 As shown, it includes a rotor disk 1, a plurality of blades 2 and a multi-segment retaining ring 3, and the plurality of blades 2 are respectively connected with a plurality of grooves 11 in the circumferential direction of the rotor disk 1 through a dovetail or fir tree tenon 21, so as to limit the 2 degrees of freedom of movement in the circumferential direction, the multi-segment retaining ring 3 is installed in the tenon slot 22 of the blade 2 and the drum slot 12 of the rotor disk 1 to limit the freedom of movement of the blade 2 in the axial direction. [0003] Multi-stage retaining ring 3 such as Figure 1 to Figure 5 As shown, it includes a plurality of normal baffles 31 and at least one special ba...

AI Technical Summary

Problems solved by technology

[0005] When decomposing the retaining ring 3, it is necessary to bend the bendable retainer 35 to form the avoidance groove 33. Since the bendable retainer 35 is an eversion structure, the conventional disassembly process is to use a screwdriver to pry the bendable retainer 35 and the blade In the gap of 2, the edge plate of the blade needs to be used as the fulcrum of the screwdriver when prying. Since the edge plate of the blade is thin, it cannot withstand excessive pressure. Using this method will easily cause damage to the blade 2.

In addition, the bendable baffle 35 can be stuck between the tenons 21 of any two adjacent blades 2 in the unbent state, that is, the installation position of the special baffle 32 is not unique, and when disassembled, the bendable baffle 35 needs to be bent at nearly 90°, and the bending angle is relatively large. Conventional bending tools are difficult to meet the requirements

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