Titanium alloy coupling support tooling

Abstract

The utility model relates to a titanium alloy coupling support frock belongs to titanium alloy coupling machining technical field. The utility model solves the technical problem that the processing size is out of tolerance and the processing efficiency is low due to the fact that the two end diaphragm plates of titanium alloy double diaphragm plate coupling are thin during the machining of the existing titanium alloy coupling. A titanium alloy coupling support frock, it includes base, screw rod, annular cushion block, locking bolt, installation groove and support body, the middle position threaded connection of base has screw rod, two annular cushion blocks are equipped outside screw rod, and the one end threaded connection of screw rod has locking bolt, and the installation groove that is equipped with on base matches the surface size of coupling, and the support body that is equipped with on base top. Through setting up the installation groove that matches the coupling appearance on the base, the coupling is fixed through the screw rod, annular cushion block and locking bolt, and the clamping position of the coupling is adjusted through the adjusting block, and the processing efficiency is improved. The utility model is used for titanium alloy coupling machining.

Description

Technical Field

[0001] This utility model relates to a support fixture for titanium alloy couplings, belonging to the field of titanium alloy coupling processing technology. Background Technology

[0002] In high-end power transmission systems, titanium alloy couplings are widely used in aviation, aerospace, shipbuilding, and precision machinery due to their excellent specific strength, corrosion resistance, and fatigue resistance. With the increasing demands for lightweight and high reliability in modern equipment, a special type of titanium alloy coupling has emerged, featuring annular thin-walled ends to achieve flexibility compensation and weight reduction. However, while this thin-walled structure brings excellent performance, it also significantly reduces structural stiffness, making it highly susceptible to localized deformation under external forces, especially during the manufacturing process.

[0003] In actual machining processes, such as turning or grinding, the coupling must be securely fixed to the machine tool. Traditional fixtures typically use clamps to hold the outer wall of the coupling or the inner hole of the mandrel for clamping. Because the diaphragms at both ends of the titanium alloy double-diaphragm coupling are thin (the thinnest part is only 1.6mm), its structural rigidity is significantly reduced, resulting in weak bending and compressive strength. When the clamping force is applied, local elastic deformation or even plastic instability can easily occur in the thin-walled area, leading to sidewall bending, denting, or overall out-of-roundness. Once deformation occurs, it will not only cause dimensional errors and non-compliance with form and position tolerances, but may also cause vibration and accelerated tool wear due to uneven stress, and in severe cases, even lead to workpiece scrap or machining interruption.

[0004] In summary, the existing titanium alloy couplings suffer from technical problems such as dimensional deviations and low processing efficiency due to the thin diaphragms at both ends. Utility Model Content

[0005] This invention addresses the technical problem of low processing efficiency and dimensional inaccuracies in the machining of existing titanium alloy couplings due to the thin diaphragms at both ends. The invention provides a support fixture for titanium alloy couplings, comprising a base, a screw, annular pads, a locking bolt, a mounting groove, and a support body. The screw is threadedly connected to the center of the base, and two annular pads are fitted around the outside of the screw. A locking bolt is threadedly connected to one end of the screw. The mounting groove on the base matches the surface dimensions of the coupling, and a support body is positioned above the base.

[0006] As another improvement of this utility model, there are two supports, each of which includes an upper support part and a lower support part below the upper support part. The lower support part and the upper support part are connected by a connecting part.

[0007] As another improvement of this utility model, the surface of the upper support part is provided with an annular groove, and several sets of adjustment blocks are evenly arranged inside the annular groove. The adjustment blocks are provided with through holes, and the upper support part is threadedly connected with a first bolt. The first bolt passes through the through hole and is threadedly connected to the coupling.

[0008] As another improvement of this utility model, a second bolt is provided on one side of the first bolt. The second bolt is threadedly connected to the upper support part, and one end of the second bolt abuts against the adjusting block.

[0009] As another improvement of this utility model, each lower support is connected to the base by a third bolt.

[0010] As another improvement of this utility model, the two supports are connected by a fourth bolt.

[0011] As another improvement of this utility model, a pin is provided between the two fourth bolts, and a mounting hole is provided on the support body, the mounting hole matching the pin.

[0012] As another improvement of this utility model, the fourth bolt is provided on the connecting part.

[0013] As another improvement of this utility model, the base is made of gray cast iron.

[0014] As another improvement of this utility model, the material of the support body is gray cast iron.

[0015] The beneficial effects of this utility model are:

[0016] 1. This fixture achieves initial positioning and surface contact support of the coupling workpiece by setting mounting grooves on the base that match the shape of the coupling. Then, the coupling is fixed by screws, annular pads, and locking bolts, exposing the inner end faces of the diaphragm discs at both ends of the coupling and the shaft area of ​​the coupling. The base is then clamped by a lathe fixture, which ensures the stability of the coupling workpiece during the processing and facilitates the turning of the inner end faces of the coupling diaphragm discs and the shaft using a lathe.

[0017] 2. By using two supports to uniformly envelop and support the side wall of the coupling from the outside, and by setting an adjusting block and a second bolt, rotating the second bolt causes the adjusting block to contact the coupling, ensuring that the end face of the coupling diaphragm is fixed. This provides a reliable reference and stable support conditions for subsequent precision turning of the outer end face of the coupling diaphragm on a lathe, effectively avoiding machining vibration and tool deflection. Attached Figure Description

[0018] Figure 1 This is a main view of a titanium alloy coupling support fixture according to the present invention;

[0019] Figure 2 This is a measurement and fixing diagram of the inner end face of a titanium alloy coupling support tooling according to this utility model;

[0020] Figure 3 This is a disassembly diagram of a titanium alloy coupling support tooling screw according to the present invention;

[0021] Figure 4 This is a measurement and fixing diagram of the outer end of a titanium alloy coupling support tooling according to the present invention;

[0022] Figure 5 This is a disassembly diagram of a titanium alloy coupling support tooling according to the present invention. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Specific implementation method one: Combining Figures 1 to 5 This embodiment provides a titanium alloy coupling support fixture, which includes a base 1, a screw 2, annular pads 3, a locking bolt 4, a mounting groove 5, and a support body 6. The screw 2 is threadedly connected to the middle of the base 1, and two annular pads 3 are sleeved on the outside of the screw 2. The locking bolt 4 is threadedly connected to one end of the screw 2. The mounting groove 5 is provided on the base 1, and the mounting groove 5 matches the surface size of the coupling. The support body 6 is provided on the top of the base 1.

[0025] The base 1, serving as the fundamental support platform for the entire tooling, is made of high-strength metal, possessing excellent rigidity and dimensional stability, effectively resisting vibration and deformation during processing. A screw 2 is threadedly connected to the center of the base 1. Two annular pads 3 are fitted around the outside of the screw 2. The outer diameter of the annular pads 3 matches the inner hole of the coupling, and the inner hole of the annular pads 3 slides within the screw 2, allowing for smooth axial movement along the screw 2. A locking bolt 4 is threaded to one end of the screw 2. The base 1 has an mounting groove 5 that matches the surface of the coupling. When the coupling is fitted onto the screw 2, the locking bolt 4 is screwed into one end of the screw 2, pushing the annular pads 3 against the end face of the coupling diaphragm, thereby achieving axial pre-tightening and positioning of the workpiece. Two support bodies 6 are located above the base 1. Each support body 6 is an integrated structure, and the two support bodies 6 can be interlocked for clamping and supporting the coupling.

[0026] Specific Implementation Method Two: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that it uses two support bodies 6. Each support body 6 includes an upper support portion 601, with a lower support portion 602 below the upper support portion 601. The lower support portion 602 is connected to the upper support portion 601 via a connecting portion 603. This design conforms to the shape of the coupling, improving ease of use. Other components and connection methods are the same as in specific embodiment one.

[0027] Specific implementation method three: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that the upper support 601 has an annular groove 7 on its surface, and several sets of adjusting blocks 8 are evenly arranged inside the annular groove 7. Each adjusting block 8 has a through hole 9. The upper support 601 is threadedly connected to a first bolt 10, which passes through the through hole 9 and is threadedly connected to the coupling. In this embodiment, there are 12 adjusting blocks 8. The specific number of adjusting blocks 8 can be flexibly adjusted according to the outer diameter, weight, structural rigidity, and machining accuracy requirements of the coupling. Each set of adjusting blocks 8 has an arc-shaped block structure, and its outer contour matches the shape of the mounting hole area on the end face of the coupling diaphragm. Each adjusting block 8 has a through hole 9; in this application, each adjusting block 8 has two through holes 9 for inserting the first bolt 10. Other components and connection methods are the same as in specific embodiment one or two.

[0028] Specific implementation method four: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that a second bolt 11 is provided on one side of the first bolt 10. The second bolt 11 is threadedly connected to the upper support part 601, and one end of the second bolt 11 abuts against the adjusting block 8. By adjusting the screw depth of the second bolt 11, the adjusting block 8 can be pushed to make a slight radial movement within the annular groove 7, so that one side of the adjusting block 8 contacts the coupling, making the end face of the coupling more stable. Other components and connection methods are the same as any one of specific embodiments one to three.

[0029] Specific Implementation Method Five: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that each lower support 602 is connected to the base 1 by a third bolt 13. This design results in a simple, reliable structure that is easy to fix. Other components and connection methods are the same as in any one of specific embodiments one through four.

[0030] Specific Implementation Method Six: Combination Figures 1 to 5This embodiment differs from specific embodiment one in that the two support bodies 6 are connected by a fourth bolt 12. This design results in a simple, reliable structure that is easy to fix. Other components and connection methods are the same as in any one of specific embodiments one through five.

[0031] Specific implementation method seven: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that a pin 15 is provided between the two fourth bolts 12, and a mounting hole 14 is provided on the support body 6, which matches the pin 15. A pin 15 is provided between the upper and lower fourth bolts 12. The mounting hole 14 on the support body 6 matches the pin 15. When the two support bodies 6 are symmetrically installed in place, the pin 15 is inserted into the mounting hole 14, which effectively limits the vertical offset or misalignment of the support body 6, ensuring that the support heights on both sides are consistent, and improving the symmetry and repeatability of the clamping. Other components and connection methods are the same as any one of specific embodiments one to six.

[0032] Specific implementation method eight: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that the fourth bolt 12 is located on the connecting part 603. Other components and connection methods are the same as any one of specific embodiments one through seven.

[0033] Specific Implementation Method Nine: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that the base 1 is made of gray cast iron. The internal graphite structure of gray cast iron provides shock absorption, suppressing the severe vibrations that easily occur during the machining of titanium alloys, thus ensuring the surface quality and dimensional accuracy of the workpiece. Other components and connection methods are the same as in any one of specific embodiments one through eight.

[0034] Specific Implementation Method Ten: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that the support body 6 is made of gray cast iron. The internal graphite structure of gray cast iron has damping properties, which helps suppress the severe vibrations that easily occur during the machining of titanium alloys, ensuring the surface quality and dimensional accuracy of the workpiece. Other components and connection methods are the same as any one of specific embodiments one through nine.

[0035] Combination Figures 1 to 5 Explanation of the working principle of this utility model:

[0036] In practical use, when it is necessary to machine the inner end face of the annular thin-walled diaphragm at both ends of the titanium alloy coupling and the coupling shaft, the titanium alloy coupling can be fitted onto the threaded screw 2 at the center of the base 1, so that the end face of the diaphragm at one end of the titanium alloy coupling is placed inside the mounting groove 5. Then, by rotating the locking bolt 4, the annular pad 3 is moved, which realizes the initial axial pre-tightening and positioning fixation of the workpiece. In this state, the inner end face of the diaphragm at one end of the coupling and the area of ​​the coupling shaft are exposed. Subsequently, the base 1 can be fixed as a whole on the lathe's three-jaw chuck, four-jaw chuck or special fixture to ensure that the tooling is coaxial with the spindle, providing a stable support foundation for subsequent cutting.

[0037] In this clamping state, the operator can perform precision machining on the exposed inner end face of the diaphragm to ensure the flatness and perpendicularity of the end face; the surface of the coupling shaft can also be ground. Then, by removing the locking bolt 4, the titanium alloy coupling can be reinstalled to allow machining on the inner end face of the diaphragm at the other end of the coupling.

[0038] After the inner end faces of the annular thin walls at both ends and the coupling shaft are machined, the screw 2 can be disassembled, the two support bodies 6 can be installed on the base 1, the lower support part 602 can be firmly connected to the base 1 by the third bolt 13, and the two support bodies 6 can also be connected by the fourth bolt 12. A pin 15 can be inserted between the two connecting bodies 603 to fix the two support bodies 6. Then, by passing the first bolt 10 through the through hole 9 and connecting it to the corresponding threaded hole on the end face of the coupling diaphragm, uniform tension of the coupling diaphragm end face is achieved. By adjusting the screwing depth of the second bolt 11, the adjusting block 8 can be pushed to make a small radial movement in the annular groove 7, so that one side of the adjusting block 8 can contact the coupling, thereby keeping the coupling diaphragm end face stable. In this state, the outer end face of the diaphragm at one end of the coupling is completely exposed to the machining area without any fixture obstruction or interference, which facilitates the lathe tool or the milling cutter of the machining center to directly perform precision machining on the outer end face of the coupling diaphragm. After disassembling and reinstalling the two supports 6 and the base 1, the outer end face of the diaphragm at the other end of the coupling can be machined.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A titanium alloy coupling support fixture, characterized in that... It includes a base (1), a screw (2), an annular pad (3), a locking bolt (4), a mounting groove (5), and a support body (6). The base (1) is threaded with a screw (2) in the middle position. Two annular pads (3) are fitted on the outside of the screw (2). One end of the screw (2) is threaded with a locking bolt (4). The base (1) is provided with a mounting groove (5), which matches the surface size of the coupling. The base (1) is provided with a support body (6).

2. The titanium alloy coupling support fixture according to claim 1, characterized in that, There are two supports (6), each of which includes an upper support (601) and a lower support (602) below the upper support (601). The lower support (602) and the upper support (601) are connected by a connecting part (603).

3. The titanium alloy coupling support fixture according to claim 2, characterized in that, The upper support part (601) has an annular groove (7) on its surface. Several sets of adjusting blocks (8) are evenly arranged inside the annular groove (7). The adjusting blocks (8) have through holes (9). The upper support part (601) is threadedly connected to a first bolt (10). The first bolt (10) passes through the through hole (9) and is threadedly connected to the coupling.

4. The titanium alloy coupling support fixture according to claim 3, characterized in that, A second bolt (11) is provided on one side of the first bolt (10). The second bolt (11) is threadedly connected to the upper support part (601). One end of the second bolt (11) abuts against the adjusting block (8).

5. The titanium alloy coupling support fixture according to claim 2, characterized in that, Each lower support (602) is connected to the base (1) by a third bolt (13).

6. The titanium alloy coupling support fixture according to claim 2, characterized in that, The two supports (6) are connected by a fourth bolt (12).

7. The titanium alloy coupling support fixture according to claim 6, characterized in that, A pin (15) is provided between the two fourth bolts (12), and a mounting hole (14) is provided on the support body (6), which matches the pin (15).

8. The titanium alloy coupling support fixture according to claim 7, characterized in that, The fourth bolt (12) is located on the connecting part (603).

9. The titanium alloy coupling support fixture according to claim 1, characterized in that, The base (1) is made of gray cast iron.

10. A titanium alloy coupling support fixture according to claim 1, characterized in that, The material of the support (6) is gray cast iron.

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