A low-stress clamping device based on high-speed centrifugal strengthening of rotating parts

Abstract

The present invention relates to the technical field of high-speed centrifugal strengthening of rotating parts, and discloses a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts, the device mainly comprises an A screw, a B screw, a left mounting clamping plate, a right mounting clamping plate, an inner ring elastic pad, a right elastic pad, a left elastic pad, etc. By adjusting the pre-tightening force of the A screw, the axial clamping force of the left mounting clamping plate and the right mounting clamping plate on the rotating part is further adjusted, and the axial clamping force is directly transmitted to the rotating part through the right elastic pad and the left elastic pad. At the same time, the inner ring elastic pad is deformed to provide radial elastic pre-tightening force for the rotating part, and the right mounting clamping plate is fixed to the coupling through the B screw. The invention adopts a matching method of rigid clamping plates and elastic pads as a whole, which ensures the stability of clamping and the elastic range of movement of the parts in the radial direction, realizes low-stress clamping of high-speed centrifugal strengthening of rotating parts, and reduces the additional stress generated by the clamping pre-tightening force on the rotating parts themselves.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed centrifugal strengthening of rotating body parts, and in particular to a low-stress clamping device based on high-speed centrifugal strengthening of rotating body parts. Background Art

[0002] Rotating parts are often used in the structures of various aircraft engines and often play a vital role in them. During the processing and manufacturing of rotating parts, significant residual stress is inevitably introduced. At present, there are many relatively mature methods for residual stress equalization, such as thermal aging, vibration aging, ultrasonic aging and other technologies. However, due to the particularity of rotating parts such as aircraft engine turbine disks, a method for regulating the centrifugal stress of rotating parts is proposed. By rotating the rotating part at high speed, centrifugal stress and residual stress are generated inside it, causing the rotating part to undergo slight plastic deformation, thereby achieving the purpose of equalizing the residual stress inside the rotating part and strengthening the mechanical properties of the rotating part.

[0003] During high-speed rotation, if the clamping force of the clamping device of the rotating part is insufficient, the rotating part may fly out, causing irreversible damage to the entire device; if the clamping force of the clamping device of the rotating part is too large, additional contact residual stress will be introduced at the clamped part of the rotating part.

[0004] To address this problem, the present invention proposes a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts. It uses a combination of rigid clamping plates and elastic pads to ensure the stability of the clamping and the elastic range of movement of the parts in the radial direction. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts. It uses a combination of rigid clamping plates and elastic pads to ensure the stability of the clamping and the elastic range of movement of the parts in the radial direction, thereby realizing low-stress clamping of rotating parts with high-speed centrifugal strengthening.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts, the right mounting plate is directly fixed to the coupling by a B screw, the coupling is connected to the electric spindle, a right elastic pad is installed at the left side of the outer edge of the right mounting plate, an inner ring elastic pad is installed on the outer edge annular surface of the right mounting plate, the end face of the right mounting plate is fixed with a left mounting plate by an A screw, a left elastic pad is installed at the right side of the outer edge of the left mounting plate, the right elastic pad and the left elastic pad are respectively clamped on the right and left sides of the rotating part, and the inner ring of the rotating part is sleeved on the outer ring of the inner ring elastic pad.

[0009] Preferably, by adjusting the pre-tightening force of the A screw, the axial clamping force of the left mounting plate and the right mounting plate on the rotating body part is further adjusted.

[0010] Preferably, the right elastic pad and the left elastic pad are in direct contact with the rotating part, which reduces the contact stress of the clamping force on the rotating part and releases the radial preload caused by radial friction.

[0011] Preferably, the inner ring elastic pad is in direct contact with the rotating part. Under the extrusion of the right elastic pad and the left elastic pad, the inner ring elastic pad will have a certain elastic deformation, providing radial elastic preload for the rotating part to prevent the rotating part from generating uncontrollable radial displacement.

[0012] Preferably, the whole is clamped in the form of the left mounting clamp, the right mounting clamp, the inner ring elastic pad, the right elastic pad, and the left elastic pad. On the one hand, the stability of the clamping is ensured, and on the other hand, the elastic range of movement of the parts in the radial direction is ensured.

[0013] (3) Beneficial effects

[0014] The present invention provides a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts, which has the following beneficial effects:

[0015] 1. The combination of rigid clamping plates and elastic pads ensures the stability of clamping and the elastic range of parts in the radial direction, thus realizing the low-stress clamping of rotating parts with high-speed centrifugal reinforcement.

[0016] 2. By adjusting the preload force of screw A, the axial clamping force of the left and right mounting plates on the rotating parts can be further adjusted. At the same time, the axial clamping force is applied to the surface of the rotating parts through the right and left elastic pads to avoid additional contact stress on the surface of the rotating parts.

[0017] 3. The right-mounted clamping plate is directly fixed to the coupling through the B screw, ensuring the stability and reliability of the rotating parts during high-speed rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of the present invention

[0019] Figure 2 Schematic diagram of partial structure cutaway of the present invention

[0020] Figure 3 A schematic diagram of a portion of the structure of the present invention

[0021] The symbols in the figure are explained as follows:

[0022] 1. Left mounting plate; 2. Rotating part; 3. Right mounting plate; 4. Inner ring elastic gasket; 5. Right elastic gasket; 6. Left elastic gasket; 7. Screw A; 8. Screw B; 9. Coupling; 10. Electric spindle. DETAILED DESCRIPTION

[0023] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0024] like Figure 1-3 As shown, the present invention provides a technical solution: a low-stress clamping device based on high-speed centrifugal strengthening of rotating parts, the right mounting plate 3 is directly fixed to the coupling 9 by the B screw 8, the coupling 9 is connected to the electric spindle 10, the right elastic pad 5 is installed at the left side of the outer edge of the right mounting plate 3, the inner ring elastic pad 4 is installed on the outer edge ring surface of the right mounting plate 3, the end face of the right mounting plate 3 is fixed with the left mounting plate 1 by the A screw 7, the left elastic pad 6 is installed at the right side of the outer edge of the left mounting plate 1, the right elastic pad 5 and the left elastic pad 6 are clamped on the right and left sides of the rotating part 2 respectively, and the inner ring of the rotating part 2 is sleeved on the outer ring of the inner ring elastic pad 4.

[0025] Furthermore, by adjusting the pre-tightening force of the A screw 7, the axial clamping force of the left mounting clamping plate 1 and the right mounting clamping plate 3 on the rotating part 2 is further adjusted.

[0026] Furthermore, the right elastic pad 5 and the left elastic pad 6 are in direct contact with the rotating part 2, which reduces the contact stress of the clamping force on the rotating part 2 and releases the radial preload force caused by radial friction.

[0027] Furthermore, the inner ring elastic pad 4 is in direct contact with the rotating part 2. Under the extrusion of the right elastic pad 5 and the left elastic pad 6, the inner ring elastic pad 4 will have a certain elastic deformation, providing radial elastic preload for the rotating part 2 to prevent the rotating part 2 from producing uncontrollable radial displacement.

[0028] Furthermore, the overall clamping is carried out in the form of a left-mounted clamping plate 1, a right-mounted clamping plate 3 and a matching inner ring elastic pad 4, a right elastic pad 5 and a left elastic pad 6. On the one hand, the stability of the clamping is ensured, and on the other hand, the elastic range of movement of the parts in the radial direction is ensured.

[0029] The working process of the present invention is as follows: first, according to the clamping size of the rotating part 2, select a suitable right mounting plate 3, fix the right mounting plate 3 to the coupling 9 by the B screw 8, and the coupling 9 is installed on the electric spindle 10. Secondly, according to the right mounting plate 3, select a suitable right elastic pad 5 and an inner ring elastic pad 4, and install them on the right mounting plate 3. Next, put the rotating part 2 on the inner ring elastic pad 4 and close to the right elastic pad 5. Next, according to the clamping size of the rotating part 2, select a suitable left mounting plate 1, and according to the left mounting plate 1, select a suitable left elastic pad 6, and then install it on the left mounting plate 1. Finally, the left mounting plate 1 is close to the rotating part 2 and fixed by the A screw 7. By adjusting the pre-tightening force of the A screw 7, the clamping force of the left mounting plate 1 and the right mounting plate 3 on the rotating part 2 can be controlled, thereby realizing low-stress clamping of the rotating part with high-speed centrifugal reinforcement.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-stress clamping device based on high-speed centrifugal strengthening of rotating parts, characterized in that: The right mounting plate (3) is directly connected to the coupling (9) through the B screw (8), and the coupling (9) is connected to the electric spindle (10). The right elastic pad (5) is installed on the left side of the outer edge of the right mounting plate (3), and the inner ring elastic pad (4) is installed on the outer edge ring surface of the right mounting plate (3). The end face of the right mounting plate (3) is fixed with the left mounting plate (1) through the A screw (7), and the left elastic pad (6) is installed on the right side of the outer edge of the left mounting plate (1). The right elastic pad (5) and the left elastic pad (6) are respectively clamped on the right and left sides of the rotating part (2), and the inner ring of the rotating part (2) is sleeved on the outer ring of the inner ring elastic pad (4).

2. The low-stress clamping device based on high-speed centrifugal strengthening of rotating parts according to claim 1, characterized in that: By adjusting the pre-tightening force of the A screw (7), the axial clamping force of the left mounting plate (1) and the right mounting plate (3) on the rotating body part (2) is further adjusted.

3. The low-stress clamping device based on high-speed centrifugal strengthening of rotating parts according to claim 1, characterized in that: The right elastic pad (5) and the left elastic pad (6) are in direct contact with the rotating part (2), reducing the contact stress of the clamping force on the rotating part (2) and releasing the radial preload caused by radial friction.

4. The low-stress clamping device based on high-speed centrifugal strengthening of rotating parts according to claim 1, characterized in that: The inner ring elastic liner (4) is in direct contact with the rotating part (2). Under the extrusion of the right elastic liner (5) and the left elastic liner (6), the inner ring elastic liner (4) will have a certain elastic deformation, providing radial elastic preload for the rotating part (2) to prevent the rotating part (2) from generating uncontrollable radial displacement.

5. The low-stress clamping device based on high-speed centrifugal strengthening of rotating parts according to claim 1 is characterized in that: The whole is clamped in the form of a combination of the left mounting clamp (1), the right mounting clamp (3), the inner ring elastic pad (4), the right elastic pad (5), and the left elastic pad (6). On the one hand, the stability of the clamping is guaranteed, and on the other hand, the elastic range of movement of the parts in the radial direction is guaranteed.

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