A special fixture for the flow channel between the blades of the closed integral blisk by abrasive flow polishing
A technology of integral blisks and special fixtures, used in grinding/polishing equipment, machine tools for surface polishing, grinding machines, etc., can solve the problems of inability to meet the requirements of use, time-consuming and laborious quality, and difficult material processing, and achieve high-efficiency and high-quality polishing. , The effect of avoiding hard contact and preventing abrasive damage
Active Publication Date: 2022-06-24
JITRI INST OF PRECISION MFG +1
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Problems solved by technology
[0003] There are a large number of complex inner surfaces on the closed blisk. The surface roughness and surface defects of these inner surfaces after EDM usually cannot meet the requirements of use. Difficult materials, structures, and high quality requirements make the traditional polishing process time-consuming and laborious. And the quality is difficult to guarantee, the use of abrasive flow processing technology can achieve high-efficiency and high-quality polishing
Method used
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Embodiment Construction
[0034] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0035] like Figure 1-8 Shown:
[0036] A special fixture for abrasive flow polishing of the flow channel between the blades of the closed integral leaf disk, the shape of the workpiece is as follows figure 2 As shown, the surface of the workpiece to be polished is the flow channel between the leaves, and the flow channel is approximately vertically distributed in the axial direction. The workpiece has structures such as a hub and the outer ring 15a of the workpiece. The hub can be used as the main clamping surface and the axial positioning surface , There are circumferential holes distributed on the outer ring 15a of the workpiece, which can be used as auxiliary clamping surfaces and radial and circumferential positioning surfaces respectively. The rigidity of the workpiece is weak, and there are many positioning and clamping surfaces, so t...
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The invention discloses a special fixture for abrasive flow polishing of the flow channel between the blades of a closed integral blade disc, which is characterized in that it includes a rigid clamping element, an elastic clamping element and an elastic protection element, and the rigid clamping element includes: an upper cylinder Cylinder (1), gland (4), base (9), lower cylinder (12), elastic clamping components include: outer pressure ring (2), inner pressure block (3), retaining ring (7), inner The support block (10), the outer support ring (11), and the elastic protection elements include: an upper hub washer (5), a wheel rim washer (6), and a lower hub washer (8), and the present invention can A certain amount of expansion and contraction can be generated to avoid the hard contact between the fixture and the closed integral blisk, which can reliably ensure that the machined surface of the workpiece is not damaged. Realize high-efficiency and high-quality polishing of the closed integral blisk, reduce the surface roughness value of the flow channel between the closed integral blisks, and improve the fatigue resistance of the workpiece.
Description
technical field [0001] The invention belongs to the technical field of abrasive flow polishing, and in particular relates to a special clamp for an interblade flow channel of a closed integral blisk for abrasive flow polishing. Background technique [0002] Abrasive Flow Machining (AFM) technology is a new mechanical processing method, which uses abrasives (a flowable mixture evenly mixed with hard abrasive particles) to flow through the surface of the workpiece to be processed under pressure. The thermodynamic interaction between the abrasive grains and the surface of the workpiece reduces the roughness of the surface of the workpiece to achieve the finish of precision machining. [0003] There are a large number of complex inner surfaces on the closed blisk. The surface roughness and surface defects of these inner surfaces after EDM usually cannot meet the requirements of use. Difficult materials, structures, and high quality requirements make the traditional polishing pro...
Claims
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IPC IPC(8): B24B41/06B24B31/116
CPCB24B41/06B24B31/116
Inventor 范武林孙玉利刘超肖娟潘立昊张鹏赵建社
Owner JITRI INST OF PRECISION MFG