Welding tool suitable for open film disc assembly

Abstract

The invention relates to a welding tool suitable for an open film disc assembly. A base plate is arranged on a mandrel, a pressing plate, a pressing spring and a pressing sleeve are arranged on the portion, corresponding to the upper portion of the base plate, of the mandrel in a sleeving mode, and a locking nut is installed on an external thread of the mandrel; at least one layer of clamping blocks is arranged on the outer side of the mandrel, and four clamping blocks are arranged on each layer; each clamping block comprises a clamping block body and a clamping strip, the inner side face of each clamping block body is a cylindrical face, an even number of clamping strips are fixed to the inner side face of each clamping block body in the height direction, and each clamping strip is arranged in the radius direction of the inner side face of the corresponding clamping block body. The inner side faces of the four clamping blocks in each layer of clamping blocks are coaxially arranged, the distances from the axis of the mandrel to the inner side faces of the four clamping blocks in each layer of clamping blocks are equal, and the included angle between the corresponding clamping strips on the adjacent clamping blocks in each layer of clamping blocks is 90 degrees. According to the invention, the assembly efficiency of the open film disc assembly before welding is improved, and the technical guarantee is provided for the welding qualification rate of the open film disc assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of tooling fixtures, and specifically discloses a welding tool suitable for an open membrane disc assembly. Background Art

[0002] Diaphragm couplings are a key component in aircraft engine transmission systems. Due to the elastic nature of the diaphragm material, they can compensate for misalignment between the driving and driven components. When the driving and driven components are located far apart, two diaphragm couplings can be used as a double coupling, achieving greater axial misalignment compensation. Diaphragm couplings are increasingly in demand, particularly for high-speed drives, due to their superior vibration-free power transmission, long service life, and maintenance-free operation.

[0003] The open-diaphragm assembly features four square vents at 90° angles on the outer edge of each open-diaphragm. The open-diaphragm's sides have a hyperbolic profile, and the entire open-diaphragm assembly must meet strict geometric precision requirements. Because the open-diaphragm assembly is a flexible, thin-walled component, fixtures are required to linearly arrange two to eight open-diaphragm discs. These discs are prone to relative movement, resulting in significant deformation errors. Therefore, special welding fixtures must be used during assembly before welding to ensure the dimensional accuracy of the open-diaphragm assembly.

[0004] The current method for adjusting dimensional accuracy before welding generally uses a deflection meter to repeatedly adjust the relative positions of the open diaphragm discs to ensure that the open diaphragm disc assembly meets the required runout value. Because the open diaphragm discs must be flexible and thin-walled and are numerous, adjusting their positions is time-consuming and reduces pre-weld assembly efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a welding tool suitable for an open membrane disc assembly that can improve the assembly efficiency of the membrane disc assembly before welding and provide technical guarantees for the welding pass rate of the open membrane disc assembly.

[0006] According to the technical solution provided by the present invention, the welding tool suitable for the open membrane disc assembly includes a spindle, a pressure plate, a compression spring, a compression sleeve, a locking nut and a clamping block; A base plate fixed to the spindle is provided on the spindle, an external thread is provided on the spindle above the corresponding base plate, a pressure plate, a compression spring and a compression sleeve are set on the spindle above the corresponding base plate, the compression spring is located above the pressure plate, the compression sleeve is located above the compression spring, a locking nut is installed on the external thread of the spindle, the locking nut is engaged with the external thread section of the spindle through internal and external threads, and is used to set the open membrane disk to be welded on the spindle between the base plate and the pressure plate; At least one layer of card blocks is arranged on the outside of the mandrel, each layer of card blocks has a total of 4 card blocks, and the 4 card blocks in each layer of card blocks are arranged at intervals around the mandrel; Each of the card blocks comprises a card block body and a card strip. The inner side surface of the card block body is a cylindrical surface. An even number of card strips are fixed in the height direction of the inner side surface of each card block body. The card strips are rectangular structures. Each card strip is arranged along the radial direction of the inner side surface of the card block body. The distance between the upper and lower adjacent card strips on each card block body is equal. The inner sides of the four card blocks in each layer are coaxially arranged, the distances from the axis of the mandrel to the inner sides of the four card blocks in each layer are equal, and the corresponding card strips on adjacent card blocks in each layer form a 90° angle.

[0007] Preferably, the compression spring is a disc spring.

[0008] Preferably, a layer of card blocks is arranged on the outer side of the core shaft, and each layer of card blocks has 4 card blocks in total.

[0009] Preferably, 2, 4, 6 or 8 clamping strips are fixed on the height direction of the inner side surface of each clamping block body.

[0010] The present invention improves the assembly efficiency of the open membrane tray assembly before welding, provides a technical guarantee for the welding qualification rate of the open membrane tray assembly, reduces the secondary processing of the open membrane tray assembly, and effectively improves the qualification rate of the open membrane tray assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the front view of the open diaphragm disc assembly.

[0012] Figure 2 It is a top view of the open membrane disc assembly.

[0013] Figure 3 It is the welding tooling assembly drawing.

[0014] Figure 4 yes Figure 3 Magnified view of part A in FIG.

[0015] Figure 5 This is the completed assembly drawing before welding.

[0016] Figure 6 It is a front view of the mandrel in the present invention.

[0017] Figure 7 It is a top view of the card block in the present invention.

[0018] Figure 8 yes Figure 7 BB cross-sectional view. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions 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 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.

[0020] A welding tool suitable for an open membrane disc assembly, comprising a spindle 1, a pressure plate 2, a compression spring 3, a compression sleeve 4, a locking nut 5 and a clamping block 6; A base plate 1.1 is provided on the spindle 1 and fixed integrally with the spindle 1. Figure 6 As shown, an external thread is provided on the spindle 1 above the corresponding base plate 1.1, and a pressure plate 2, a compression spring 3 and a compression sleeve 4 are set on the spindle 1 above the corresponding base plate 1.1. The compression spring 3 is located above the pressure plate 2, and the compression sleeve 4 is located above the compression spring 3. The compression spring 3 is preferably a disc spring. A locking nut 5 is installed on the external thread of the spindle 1. The locking nut 5 is engaged with the external thread section of the spindle 1 through internal and external threads. The open membrane disc to be welded is set on the spindle 1 between the base plate 1.1 and the pressure plate 2; At least one layer of card blocks 6 is arranged on the outside of the mandrel 1, with each layer of card blocks 6 having a total of four card blocks 6, and the four card blocks 6 in each layer of card blocks 6 are arranged at intervals around the mandrel 1; like Figure 7 and Figure 8 As shown, each of the card blocks 6 includes a card block body 6.1 and a card strip 6.2. The inner side surface of the card block body 6.1 is a cylindrical surface. An even number of card strips 6.2 are fixed in the height direction of the inner side surface of each card block body 6.1. The card strips 6.2 are rectangular parallelepiped structures. Each card strip 6.2 is arranged along the radial direction of the inner side surface of the card block body 6.1. The distance between the upper and lower adjacent card strips 6.2 on each card block body 6.1 is equal. The inner side surfaces of the four card blocks 6 in each layer of card blocks 6 are coaxially arranged, the distance from the axis of the core shaft 1 to the inner side surfaces of the four card blocks 6 in each layer of card blocks 6 is equal, and the corresponding card strips 6.2 on adjacent card blocks 6 in each layer of card blocks 6 form a 90° angle.

[0021] Preferably, a layer of clamping blocks 6 is arranged on the outside of the spindle 1, with each layer of clamping blocks 6 having a total of 4 blocks. Two, four, six or eight clamping strips 6.2 are fixed in the height direction of the inner side surface of each clamping block body 6.1.

[0022] like Figure 1 and Figure 2As shown, the open membrane plate assembly is formed by welding four open membrane plates 10 into one, and four openings 10.1 with an angle of 90° are set on the outer edge of each open membrane plate 10. The width of the opening 10.1 is 1 / 3-1 / 2 of the overall thickness of the open membrane plate 10, and the length of the opening 10.1 is slightly larger than its width. In the case of some large-diameter open membrane plates 10, the length of the opening 10.1 can be appropriately increased.

[0023] The four openings 10.1 on the adjacent open membrane discs 10 are completely aligned. After the open membrane disc assembly is welded, the channel formed by the upper and lower openings 10.1 will still be retained and will not be blocked. On the one hand, the channel plays a role in preventing blockages in the joint or preventing the deposition of impurities such as grease. During the use of the open membrane disc assembly, these impurities are naturally discharged from the channel during rotation; on the other hand, during the welding process of the open membrane disc assembly, the channel can balance the internal and external air pressure of the open membrane disc assembly, preventing the open membrane disc assembly from causing nonlinear compression or expansion of the thin-walled flexible membrane disc due to air pressure imbalance, thereby causing the overall deformation of the open membrane disc assembly.

[0024] When two clamping strips 6.2 are fixed in the height direction of the inner side surface of each of the clamping block bodies 6.1, the open film disc assembly to be welded consists of only two open film discs; when four clamping strips 6.2 are fixed in the height direction of the inner side surface of each of the clamping block bodies 6.1, the open film disc assembly to be welded consists of four open film discs. The structure of the open film disc assembly is as follows: Figure 1 and Figure 2 As shown; when 6 clamping strips 6.2 are fixed in the height direction of the inner side surface of each of the clamping block bodies 6.1, the open membrane disc assembly to be welded consists of 6 open membrane discs; when 8 clamping strips 6.2 are fixed in the height direction of the inner side surface of each of the clamping block bodies 6.1, the open membrane disc assembly to be welded consists of 8 open membrane discs.

[0025] When the open membrane disc assembly to be welded consists of 4 or an even number of open membrane discs, two or more layers of clamping blocks 6 can be arranged on the outer side of the core shaft 1 to meet the welding requirements of the open membrane disc assembly.

[0026] The following describes the specific working process of the present invention by welding four open film discs 10 into an open film disc assembly: Step 1: Place the mandrel 1 vertically on a horizontal plane. The bottom of the mandrel 1 can be fixed with a fixture. Step 2: Install the three open membrane discs 10 onto the spindle 1, and manually rotate the two open membrane discs 10 at the bottom so that the positions of their openings 10.1 are completely aligned; Step 3: Insert the bottom card strip 6.2 on the card block 6 into the opening 10.1 of the two open film discs 10 at the bottom, rotate the third open film disc 10 so that its opening 10.1 is aligned with the top card strip 6.2 on the card block 6, and complete the installation of the four card blocks 6 in sequence; Step 4: Align the uppermost clip 6.2 on the clip block 6 and install the fourth open film disc 10 on the spindle 1; Step 5: Install the pressure plate 2, the compression spring 3, the compression sleeve 4 and the locking nut 5 in sequence to tighten the four open membrane discs 10. Figure 3 and Figure 4 As shown; Step 6: Use the deflection meter to adjust the runout of the open diaphragm assembly to meet the geometric accuracy requirements, remove the four blocks 6 in sequence, and complete the installation of the open diaphragm assembly before welding. Figure 5 shown.

[0027] By using the present invention, the adjustment time of assembling the membrane disc assembly before welding can be reduced, so that the assembly efficiency of the open membrane disc assembly is effectively improved.

[0028] In the present invention, the materials of the spindle 1, base plate 1.1, pressure plate 2, compression spring 3, compression sleeve 4, locking nut 5 and clamping block 6 can be high temperature alloy, stainless steel or maraging steel.

[0029] In the present invention, the material of the open membrane disc 10 can be titanium alloy, Inconel alloy, stainless steel or maraging steel.

[0030] In the present invention, the clamping block 6 can be driven electrically, pneumatically or hydraulically to move the clamping block 6 closer to or farther away from the spindle 1 .

[0031] In the present invention, the top view shape of the block body 6.1 can be a rectangle, a sector or other geometric shapes and combinations thereof.

[0032] When the present invention is used, the clamping strip 6.2 on the clamping block 6 and the opening 10.1 on the open membrane disc 10 are clearance-matched, and a smaller clearance such as H7 / g6, H8 / g7 can be selected.

[0033] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A welding tool suitable for an open membrane tray assembly, characterized in that: It comprises a spindle (1), a pressure plate (2), a compression spring (3), a compression sleeve (4), a locking nut (5) and a clamping block (6); The spindle (1) is provided with a base plate (1.1) fixed to the spindle (1), an external thread is provided on the spindle (1) above the corresponding base plate (1.1), a pressure plate (2), a compression spring (3) and a compression sleeve (4) are mounted on the spindle (1) above the corresponding base plate (1.1), the compression spring (3) is located above the pressure plate (2), the compression sleeve (4) is located above the compression spring (3), a locking nut (5) is mounted on the external thread of the spindle (1), the locking nut (5) is meshed with the external thread section of the spindle (1) through internal and external threads, and is used to mount an open membrane disc to be welded on the spindle (1) between the base plate (1.1) and the pressure plate (2); At least one layer of card blocks (6) is arranged on the outer side of the mandrel (1), each layer of card blocks (6) has a total of four card blocks, and the four card blocks (6) in each layer of card blocks (6) are arranged at intervals around the mandrel (1); Each of the card blocks (6) comprises a card block body (6.1) and a card strip (6.2); the inner side surface of the card block body (6.1) is a cylindrical surface; an even number of card strips (6.2) are fixed in the height direction of the inner side surface of each card block body (6.1); the card strips (6.2) are rectangular parallelepiped structures; each card strip (6.2) is arranged along the card block body ( The distances between the upper and lower adjacent clamping strips (6.2) on each clamping block body (6.1) are equal; The inner side surfaces of the four card blocks (6) in each layer of card blocks (6) are coaxially arranged, the distances from the axis of the mandrel (1) to the inner side surfaces of the four card blocks (6) in each layer of card blocks (6) are equal, and the corresponding card strips (6.2) on adjacent card blocks (6) in each layer of card blocks (6) form an angle of 90°.

2. The welding tool suitable for the open membrane tray assembly according to claim 1, characterized in that: The compression spring (3) is a disc spring.

3. The welding tool suitable for the open membrane tray assembly according to claim 1, characterized in that: A layer of card blocks (6) is arranged on the outer side of the mandrel (1), and each layer of card blocks (6) has a total of four blocks.

4. The welding tool suitable for the open membrane plate assembly as claimed in claim 1 is characterized in that: Two, four, six or eight clamping strips (6.2) are fixed in the height direction of the inner side surface of each clamping block body (6.1).

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