Anti-moire device with curved ribs

Abstract

This utility model discloses a device for preventing chatter marks caused by vibration in curved ribs. The device includes: a dedicated pad, a conical pressure plate, a silicone expansion ring, a backing nut, and a clamping screw. The dedicated pad achieves precise positioning of the curved rib's end face. Then, the conical pressure plate, in conjunction with the silicone expansion ring, causes the silicone expansion ring to expand radially under the action of the clamping screw, tightly fitting the inner wall of the part and eliminating chatter marks caused by vibration during processing. Simultaneously, this utility model also includes a positioning and clamping unit, including a shim, a positioning block, an auxiliary pressure plate, and a fixing screw, further ensuring the overall stability of the curved rib. This device has a simple structure, is easy to install, and can effectively improve the processing efficiency of curved ribs, reduce rework rates, and is suitable for precision machining fields in national defense and both military and civilian applications.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and more specifically, to an arc-shaped rib anti-vibration device. Background Technology

[0002] In existing machining processes, severe chatter marks occur at the interface between R597 and Ф100 during the machining of long and uniquely shaped curved ribs. There are two main reasons for this chatter mark. First, due to the long length and narrow width of the part, the milling cutter vibrates when cutting the curved surface. Second, the part's structure restricts its positioning, and the clamping positioning points are too close together to effectively position the entire curved rib.

[0003] Secondly, while using an auxiliary pressure plate at the chirp area can effectively tighten the curved ribs and solve the chirp problem, the milling cutter interferes with the auxiliary pressure plate when milling the curved surface, making it impossible to complete the machining of the curved surface in one pass, resulting in noticeable tool marks on the curved surface. This method not only requires reworking the curved ribs and grinding off the tool marks, but more importantly, it requires constantly disassembling and reinstalling the auxiliary pressure plate during the machining of the curved ribs, severely impacting production efficiency.

[0004] In conclusion, there is an urgent need for an anti-vibration device that is structurally sound, easy to install, and capable of effectively suppressing vibrations of parts during machining and eliminating chatter marks. Utility Model Content

[0005] This invention provides a device for preventing vibration marks on curved ribs to solve the problem of vibration marks generated during the processing of curved ribs in the prior art.

[0006] To achieve the above objectives, this utility model provides an anti-vibration device for an arc-shaped rib. The device includes: a special pad for supporting the end face of the arc-shaped rib; a conical pressure plate that cooperates with a silicone expansion ring and is installed on the inner wall of the end face of the arc-shaped rib; the silicone expansion ring, which is an open elastic structure, is fitted onto the outer surface of the conical pressure plate; a back-tightening nut for fixing the special pad to the base plate; and a clamping screw that passes through the conical pressure plate and the special pad and fixes them together. By tightening the clamping screw, the silicone expansion ring is brought into close contact with the inner wall of the end face of the arc-shaped rib.

[0007] Optionally, the clamping screw passes through the tapered pressure plate and is screwed into the threaded hole of the special pad.

[0008] Optionally, it also includes: a positioning and clamping unit, wherein at least two positioning and clamping units are provided, and all positioning and clamping units are spaced apart, for positioning and clamping the arc-shaped rib.

[0009] Optionally, the positioning and clamping unit includes: a pad, a positioning block, and an auxiliary pressure plate; the pad is disposed at the bottom end of the arc-shaped rib; the positioning block is fixed on the base plate; and the auxiliary pressure plate is used to clamp the pad and the positioning block.

[0010] Optionally, the positioning and clamping unit further includes: a fixing screw; the fixing screw is used to pass through the auxiliary pressure plate and the positioning block and fix them together.

[0011] Optionally, the outer surface of the tapered pressure plate has a tapered structure with a tapered angle that matches the inner wall taper of the silicone expansion ring, thereby achieving radial expansion during axial compression.

[0012] Optionally, the silicone expansion ring is made of oil-resistant and high-temperature resistant silicone rubber with a hardness range of Shore A50-70.

[0013] Optionally, an anti-loosening washer is provided between the back-tightening nut and the base plate.

[0014] The beneficial effects of this utility model are:

[0015] This invention provides a device for preventing chatter marks caused by vibration in curved ribs. The device includes a dedicated pad, a tapered pressure plate, a silicone expansion ring, a backing nut, and a clamping screw. The dedicated pad achieves precise positioning of the curved rib's end face. The tapered pressure plate, in conjunction with the silicone expansion ring, causes the silicone expansion ring to expand radially under the action of the clamping screw, tightly fitting the inner wall of the part and eliminating chatter marks caused by vibration during processing. Simultaneously, this invention also includes a positioning and clamping unit, including a shim, a positioning block, an auxiliary pressure plate, and fixing screws, further ensuring the overall stability of the curved rib. This device has a simple structure, is easy to install, and effectively improves the processing efficiency of curved ribs, reducing rework rates. It is suitable for precision machining fields applicable to both national defense and civilian use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the arc-shaped rib provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the anti-vibration pattern device provided in this embodiment of the utility model;

[0018] Figure 3 This is a cross-sectional view of an arc-shaped rib anti-vibration device provided in an embodiment of this utility model;

[0019] Figure 4 This is a perspective view of an arc-shaped rib anti-vibration device provided in an embodiment of this utility model.

[0020] Symbol explanation:

[0021] Special pad-1, conical pressure plate-2, silicone expansion ring-3, back tightening nut-4, clamping screw-5, arc rib-6, pad-7, positioning block-8, auxiliary pressure plate-9, fixing screw-10, base plate-11. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Figure 1 This is a schematic diagram of the structure of the arc-shaped rib 6 provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the anti-vibration pattern device provided in this embodiment of the utility model; Figure 3 This is a cross-sectional view of an arc-shaped rib 6 anti-vibration device provided in an embodiment of this utility model; Figure 4 This is a perspective view of an arc-shaped rib anti-vibration device provided in an embodiment of this utility model. Figures 1-4 As shown, the arc-shaped rib anti-vibration device includes:

[0024] 1. Special pad 1, used to support the end face of the arc-shaped rib 6;

[0025] 2. The conical pressure plate 2, in conjunction with the silicone expansion ring 3, is installed on the inner wall of the end face of the arc-shaped rib 6;

[0026] 3. The silicone expansion ring 3 is an open-type elastic structure, which is sleeved on the outer surface of the conical pressure plate 2;

[0027] 4. Tightening nut 4 is used to fix the special pad 1 on the base plate 11;

[0028] 5. Tighten the screw 5, pass it through the conical pressure plate 2 and the special pad 1, and fix them together. Tighten the screw 5 to make the silicone expansion ring 3 and the inner wall of the end face of the arc rib 6 in close contact.

[0029] In one optional embodiment, the substrate 11 is provided with multiple T-slots, and the bottom of the special pad 1 is provided with a protrusion for insertion into the T-slots and fixed in the T-slots by a back-tightening nut 4. Furthermore, an anti-loosening washer is provided between the back-tightening nut 4 and the substrate 11 (i.e., the T-slots of the substrate 11) to prevent the back-tightening nut 4 from loosening due to vibration during processing. The use of the anti-loosening washer ensures that the fastening force between the special pad 1 and the substrate 11 remains stable over a long period, thereby ensuring that the clamping structure will not affect the anti-vibration effect due to local loosening throughout the entire processing.

[0030] The end face of the arc-shaped rib 6 (especially at the 100mm diameter point) is placed on the special pad 1 to ensure accurate positioning of the arc-shaped rib 6. The tapered pressure plate 2, in conjunction with the silicone expansion ring 3, is installed on the inner wall of the end face of the arc-shaped rib 6 (at the 58mm diameter point); the clamping screw 5 passes through the hole in the tapered pressure plate 2 and is screwed into the threaded hole of the special pad 1. By tightening the clamping screw 5, the silicone expansion ring 3 is brought into close contact with the inner wall of the end face of the arc-shaped rib 6, so that even if the silicone expansion ring 3 expands radially, it fits tightly against the inner wall of the arc-shaped rib 6, eliminating gaps and suppressing processing vibration.

[0031] The flexible design of the silicone expansion ring 3 of this invention can adapt to the inner wall shape of the arc rib 6, avoiding processing vibration caused by gaps; the stable clamping force of the clamping screw 5 reduces the vibration during milling cutter cutting, significantly reducing chatter marks; the device of this invention can achieve one-time clamping without repeated disassembly of the auxiliary pressure plate 9, improving processing efficiency.

[0032] In one optional embodiment, the outer surface of the conical pressure plate 2 has a tapered conical structure, and its taper is consistent with the inner wall taper of the silicone expansion ring 3. When the clamping screw 5 passes through the conical pressure plate 2 and is screwed to the special pad 1, axial pressure is applied, causing the conical pressure plate 2 to move axially, thereby driving the silicone expansion ring 3 to expand radially towards the inner wall of the end face of the arc-shaped rib 6, forming a tight contact and eliminating processing gaps. The tapered fit achieves "small displacement, large expansion," improving clamping efficiency; the conical structure of the conical pressure plate 2 has self-locking properties after clamping, preventing loosening.

[0033] In one optional embodiment, the silicone expansion ring 3 is made of oil-resistant, high-temperature resistant silicone rubber with a hardness range of Shore A50-70.

[0034] The silicone expansion ring 3 is made of oil-resistant and high-temperature-resistant silicone rubber, ensuring good elasticity and stability even in high ambient temperatures or when oil contamination is present during processing. Simultaneously, its hardness range is specified as Shore A 50-70, guaranteeing sufficient flexibility to adapt to the inner wall of the part while providing adequate support to prevent vibration during processing. This material and hardness selection has been verified through actual process testing, ensuring consistent anti-vibration performance across a wide range of working environments.

[0035] In an optional embodiment, the arc-shaped rib anti-vibration device further includes:

[0036] The positioning and clamping unit is provided in at least two units, and all positioning and clamping units are spaced apart, for positioning and clamping the arc-shaped rib 6.

[0037] At least two positioning and clamping units are provided and are reasonably distributed on the arc-shaped rib 6 to ensure that the arc-shaped rib 6 can be effectively fixed at every critical part during the processing. This design not only helps the basic device to achieve precise positioning, but also further suppresses the slight displacement of the arc-shaped rib 6 caused by vibration during processing, thereby improving the overall processing accuracy and processing stability.

[0038] Furthermore, the positioning and clamping unit includes: a pad 7, a positioning block 8, and an auxiliary pressure plate 9;

[0039] The pad 7 is disposed at the bottom end of the arc-shaped rib 6; the positioning block 8 is fixed on the base plate 11; the auxiliary pressure plate 9 is used to press the pad 7 and the positioning block 8.

[0040] The shim 7 is placed at the bottom of the curved rib 6, providing initial support; the positioning block 8 is fixed to the base plate 11, providing an accurate positioning reference for the curved rib 6; the auxiliary pressure plate 9 is placed between the shim 7 and the positioning block 8, ensuring that the curved rib 6 does not shift during the entire clamping process through clamping action. This clearly defined design ensures that the curved rib 6 has multiple stable contact points during clamping, thereby improving the overall clamping stability.

[0041] Furthermore, the positioning and clamping unit also includes: a fixing screw 10;

[0042] The fixing screw 10 passes through the auxiliary pressure plate 9 and the positioning block 8 and securely connects them. This design ensures that there is no looseness between the auxiliary pressure plate 9 and the positioning block 8, allowing the entire positioning and clamping unit to withstand greater clamping force during processing, while improving the system's vibration resistance and clamping stability.

[0043] In one optional embodiment, the pitch of the clamping screw 5 is 1.5mm, and it is fitted with the threaded hole of the special pad 1 with an H7 / g6 clearance to ensure that the threaded pair is free from jamming when tightened and the clamping force is transmitted stably.

[0044] In an optional embodiment, a special pad 1 is installed on the 100mm diameter end face of the arc rib 6, and its thickness is 1.2 times (2.4mm) of the machining allowance of the arc rib 6 (2mm on one side) to ensure that the end face is completely fitted.

[0045] The beneficial effects of this utility model are:

[0046] This invention provides a device to prevent vibration marks on an arc-shaped rib 6. The device includes: a dedicated pad 1, a conical pressure plate 2, a silicone expansion ring 3, a back-tightening nut 4, and a clamping screw 5. The dedicated pad 1 achieves precise positioning of the end face of the arc-shaped rib 6. Then, utilizing the cooperation between the conical pressure plate 2 and the silicone expansion ring 3, under the action of the clamping screw 5, the silicone expansion ring 3 expands radially, tightly fitting against the inner wall of the part, eliminating vibration marks caused by vibration during processing. Simultaneously, this invention also includes a positioning and clamping unit, including a shim 7, a positioning block 8, an auxiliary pressure plate 9, and a fixing screw 10, further ensuring the overall stability of the arc-shaped rib 6. This device has a simple structure, is easy to install, and can effectively improve the processing efficiency of the arc-shaped rib 6, reduce rework rates, and is suitable for precision machining fields in national defense and both military and civilian applications.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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. An arc-shaped rib anti-vibration device, characterized in that, include: Special pad (1) is used to support the end face of the arc rib (6); A tapered pressure plate (2) is fitted with a silicone expansion ring (3) and installed on the inner wall of the end face of the arc-shaped rib (6); The silicone expansion ring (3) is an open elastic structure and is fitted onto the outer surface of the conical pressure plate (2); A back tightening nut (4) is used to fix the special pad (1) onto the base plate (11); The clamping screw (5) passes through the tapered pressure plate (2) and the special pad (1) and fixes them together. By tightening the clamping screw (5), the silicone expansion ring (3) is brought into close contact with the inner wall of the end face of the arc rib (6).

2. The apparatus according to claim 1, characterized in that: The clamping screw (5) passes through the tapered pressure plate (2) and is screwed into the threaded hole of the special pad (1).

3. The apparatus according to claim 1, characterized in that, Also includes: The positioning and clamping unit is provided in at least two units, and all positioning and clamping units are spaced apart, for positioning and clamping the arc-shaped rib (6).

4. The apparatus according to claim 3, characterized in that: The positioning and clamping unit includes: a pad (7), a positioning block (8), and an auxiliary pressure plate (9); The pad (7) is disposed at the bottom end of the arc-shaped rib (6); the positioning block (8) is fixed on the base plate (11); the auxiliary pressure plate (9) is used to press the pad (7) and the positioning block (8).

5. The apparatus according to claim 4, characterized in that: The positioning and clamping unit further includes: a fixing screw (10); The fixing screw is used to pass through the auxiliary pressure plate (9) and the positioning block (8) and fix them together.

6. The apparatus according to claim 1, characterized in that: The outer surface of the tapered pressure plate (2) is a tapered structure with a tapered shape. Its taper is consistent with the taper of the inner wall of the silicone expansion ring (3), so as to achieve radial expansion when axially pressed.

7. The apparatus according to claim 1, characterized in that: The silicone expansion ring (3) is made of oil-resistant and high-temperature resistant silicone rubber with a hardness range of Shore A50-70.

8. The apparatus according to claim 1, characterized in that: An anti-loosening washer (7) is provided between the back tightening nut (4) and the base plate.

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