Air bag inner support auxiliary damping tool for thin-wall part machining

Abstract

The utility model provides an air bag inner support auxiliary damping tool for thin-wall part machining. The air bag inner support auxiliary damping tool comprises a combination body, an air bag and an elastic part. The combination body comprises a plurality of sub-blocks arranged in the circumferential direction, the air bag is arranged in the combination body, and the elastic piece is arranged on the periphery of the combination body in a sleeving mode; the air bag is inflated to expand the elastic piece and the sub-blocks towards the periphery, and the sub-blocks are folded towards the center when the air bag is deflated through contraction of the elastic piece. According to the tool, the interior of the air bag is pressed and expanded through high-pressure air, all the sub-blocks are pushed to be evenly expanded towards the periphery along the guide rods and make contact with all the inner walls of the thin-wall part, and expansion pressure generated by the air bag is transmitted to all the stress faces of the thin-wall part so that all the faces can evenly bear certain force; in the machining process, the tool forms a good damping effect on force generated by cutting of a cutter like a pneumatic spring, the rigidity of the thin-wall part is indirectly improved, and therefore the forming conditions of cutter vibration are reduced.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled part machining technology, specifically to an auxiliary shock-absorbing tooling for airbag internal support in thin-walled part machining. Background Technology

[0002] In the machining industry, with the development of CNC technology and the demand for energy conservation and emission reduction, various product designs are trending towards thin-walled, deep-cavity, and integrated molding. Furthermore, with the deepening of marketization, customers are placing higher demands on product dimensions and appearance. CNC milling, due to its concentrated and flexible machining processes and ease of ensuring product consistency, is widely used in the machining industry. However, due to the high degree of automation in CNC machining, when machining thin-walled, deep-cavity, and other integrated designs, the product's inherent rigidity is low. The closer to the finishing process, the more prone it is to vibration between the product and the cutting tool, causing localized overcutting or a sharp decline in surface quality. If operators fail to detect this vibration in time, it can lead to product scrap. While changing cutting parameters can partially solve the vibration problem, it significantly reduces production efficiency.

[0003] The existing process reduces vibration by filling the inner cavity with damping materials such as plaster, which effectively suppresses vibration. However, the filler material is heavy and prone to causing product deformation. Furthermore, the initial filling and subsequent removal operations are cumbersome, making it suitable only for single-piece or small-batch production. In addition, to adapt to mass production, a fixed-size rigid internal auxiliary support structure is used. However, during use, irregular deformation caused by manufacturing tolerances and stress on the parts has been found. This results in either the auxiliary support being too small to provide support, or too large to fit into the product, or being forced into place causing scratches on the inner wall and making removal difficult after processing. Simultaneously, to ensure smooth production, either various sizes of auxiliary support fixtures must be manufactured, or the dimensional tolerances of the product must be controlled more precisely. The former requires operators to fit the appropriate size support fixture during clamping, significantly increasing the operator's workload and resulting in operational waste. The latter lengthens the product manufacturing cycle and multiplies the manufacturing difficulty, leading to wasted manufacturing precision.

[0004] In summary, there is an urgent need for a thin-walled component machining airbag inner support auxiliary shock absorption tooling to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary vibration damping fixture for airbag internal support during the machining of thin-walled parts, aiming to solve the problem of resonance between the thin-walled parts and the cutting tool during machining due to the low rigidity of the thin-walled parts. The specific technical solution is as follows:

[0006] A shock-absorbing tooling for processing thin-walled parts with an airbag inner support includes an assembly, an airbag, and an elastic element. The assembly includes multiple sub-blocks arranged circumferentially. The airbag is disposed inside the assembly, and the elastic element is sleeved on the outer periphery of the assembly. When the airbag is inflated, it expands the elastic element and each sub-block to the surrounding area. When the airbag is deflated, the elastic element contracts, causing each sub-block to retract towards the center.

[0007] Preferably, the assembly is disposed inside the thin-walled member, and the outer surface of the assembly is matched with the inner wall structure of the thin-walled member; the airbag is inflated to push each sub-block against the inner wall of the thin-walled member.

[0008] Preferably, the sub-blocks are provided with groove segments, and the groove segments on each sub-block arranged circumferentially form a receiving groove, and the elastic element is disposed in the receiving groove.

[0009] Preferably, two adjacent sub-blocks are provided with guide rods and guide holes respectively, and the guide rods are inserted into the guide holes to achieve motion guidance.

[0010] Preferably, the sub-block is made of silicone or rubber.

[0011] Preferably, an inner sleeve is embedded in the guide hole of the sub-block, and the guide rod is inserted into the inner sleeve.

[0012] Preferably, the airbag is provided with an air nozzle.

[0013] Preferably, the number of elastic elements is at least one, and each elastic element is evenly distributed in the height direction of the assembly.

[0014] The application of the technical solution of this utility model has the following beneficial effects:

[0015] The tooling of this invention injects compressed air into the airbag through the air nozzle. The high-pressure gas causes the airbag to expand under pressure, pushing each sub-block to spread evenly in all directions along the guide rod and contact the inner walls of the thin-walled part. The expansion pressure generated by the airbag is transmitted to each force-bearing surface of the thin-walled part, so that each surface bears a certain force evenly. During the processing, the tooling acts like a pneumatic spring to provide good damping for the force generated by the cutting tool, indirectly improving the rigidity of the thin-walled part and thus reducing the conditions for the formation of vibration.

[0016] The airbags installed in the assembly significantly reduce the overall weight of the tooling, mitigating the risk of deformation caused by the weight of thin-walled parts in lateral clamping, reducing the labor intensity of operators during the clamping process of thin-walled parts, and improving work efficiency.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a top view of the auxiliary shock-absorbing tooling for the inner support of the airbag in the thin-walled part processing of this utility model;

[0020] Figure 2 This is a side view of the auxiliary shock-absorbing tooling for the inner support of the airbag in the thin-walled part processing of this utility model;

[0021] Figure 3 yes Figure 1 Sectional view at point AA;

[0022] Among them, 1. thin-walled component, 2. sub-block, 3. airbag, 4. air nozzle, 5. elastic component, and 6. guide rod. Detailed Implementation

[0023] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] Example:

[0026] See Figures 1-3 This embodiment provides an airbag-supported auxiliary shock absorption tooling for processing thin-walled parts, including an assembly, an airbag 3, and an elastic element 5. The assembly includes multiple sub-blocks 2 arranged circumferentially. The airbag 3 is disposed inside the assembly, and the elastic element 5 is sleeved on the outer periphery of the assembly. When the airbag 3 is inflated, it expands the elastic element 5 and each sub-block 2 to the surrounding area, thereby achieving the purpose of each sub-block pressing against the inner wall of the thin-walled part 1. When the elastic element 5 contracts, it causes the sub-blocks 2 to retract towards the center when the airbag 3 is deflated, thereby separating each sub-block from the inner wall of the thin-walled part and facilitating the removal of the tooling.

[0027] Specifically, in this embodiment, when the tooling assists in processing the thin-walled part, the entire tooling is placed inside the thin-walled part (i.e., the thin-walled ring part). The airbag 3 is inflated to push each sub-block 2 against the inner wall of the thin-walled part 1, such as... Figures 1-3 As shown. The outer surface of the assembly is matched to the inner wall structure of the thin-walled component 1. This matching means that the structures of the two components are compatible and do not interfere with each other, while ensuring uniform stress on the inner wall of the thin-walled component. If there are depressions or protrusions on the inner wall of the thin-walled component 1, the outer surface of the assembly is correspondingly provided with protrusions or depressions to ensure that the assembly can adequately support the inner wall of the thin-walled component and guarantee uniform stress on the inner wall.

[0028] Preferably, the sub-block 2 is provided with grooved segments, and the grooved segments on each sub-block 2 arranged circumferentially form a receiving groove, in which the elastic element 5 is disposed. The purpose of providing a receiving groove to hold the elastic element is to prevent the elastic element 5 from contacting the inner wall of the thin-walled component 1, which would cause uneven stress on the inner wall of the thin-walled component. Furthermore, those skilled in the art will understand that since each sub-block can move in all directions (i.e., radially), when each sub-block expands outwards, the receiving groove is not a complete annular groove, but rather an annular groove formed by multiple grooved segments spaced apart.

[0029] Preferably, each of two adjacent sub-blocks 2 is provided with a guide rod 6 and a guide hole, with the guide rod 6 inserted into the guide hole to guide the movement. The guide rod and guide hole guide the relative movement between the sub-blocks, ensuring that each sub-block expands evenly outwards or contracts towards the center. In some embodiments, the guide rods between two adjacent sub-blocks at different locations can be of the same or different shapes; the guide rods can be cylindrical or rectangular. Furthermore, between two adjacent sub-blocks, one sub-block can be entirely equipped with guide rods, while the other sub-block has guide holes, thus guiding the relative movement between the two sub-blocks; alternatively, one sub-block can be equipped with both guide rods and guide holes, while the other sub-block has corresponding guide holes and guide rods, also achieving the purpose of guiding the relative movement between two adjacent sub-blocks.

[0030] Preferably, the sub-block 2 is made of silicone or rubber, which allows the sub-block 2 to undergo a certain degree of elastic deformation, ensuring that there is no rigid contact between the sub-block 2 and the inner wall of the thin-walled component, thus preventing damage to the inner wall of the thin-walled component.

[0031] Preferably, since the sub-block is made of silicone or rubber material that can undergo elastic deformation, in order to prevent excessive friction between the guide rod and the guide hole on the sub-block from affecting the movement of the sub-block, and to prevent the sub-block from being damaged by contact with the rigid guide rod, in this embodiment, an inner sleeve is embedded in the guide hole of the sub-block 2, and the guide rod 6 is inserted into the inner sleeve. In this way, the guide rod and the inner sleeve are in rigid contact, which allows the guide rod to move more smoothly in the guide hole, and also avoids the guide rod from directly contacting the sub-block, which could cause the sub-block to be easily damaged by force.

[0032] Preferably, the airbag 3 is provided with an air nozzle 4, which allows high-pressure gas to be injected into the airbag 3 and also allows the airbag to be deflated.

[0033] Preferably, the number of elastic elements 5 is at least one, and the elastic elements 5 are evenly distributed along the height direction of the assembly. The purpose of even distribution is to ensure that the elastic force on each sub-block is relatively balanced at different positions, and to avoid jamming in the relative movement between the sub-blocks. In this embodiment, the number of elastic elements is one, and it is located at the midpoint of the height of the assembly.

[0034] Preferably, in this embodiment, the number of sub-blocks is four.

[0035] The technical solution applied in this embodiment is as follows:

[0036] Adjacent sub-blocks are connected by guide rods and guide holes to form an assembly. An airbag is placed inside the assembly, and elastic components are fitted around its outer perimeter to complete the tooling assembly. The tooling is then placed inside the thin-walled component, and a high-pressure air source is connected to the air nozzle for inflation. The inflated airbag causes the sub-blocks to expand outwards. Inflation stops when the sub-blocks press against the inner wall of the thin-walled component, allowing for machining of the component's surface. After machining, the air nozzle is opened to deflate the airbag. Under the elastic force of the elastic components, the sub-blocks retract towards the center, and the airbag gradually shrinks. Once deflation is complete, the tooling can be easily removed from the thin-walled component.

[0037] The effect of applying the technical solution of this embodiment is:

[0038] In this embodiment, the tooling injects compressed air into the airbag through the air nozzle. The high-pressure gas causes the airbag to expand under pressure, pushing each sub-block to spread evenly in all directions along the guide rod and contact the inner walls of the thin-walled part. The expansion pressure generated by the airbag is transmitted to each force-bearing surface of the thin-walled part, so that each surface bears a certain force evenly. During the processing, the tooling acts like a pneumatic spring, which provides good damping for the force generated by the cutting tool, indirectly improving the rigidity of the thin-walled part and thus reducing the conditions for the formation of vibration.

[0039] The airbags installed in the assembly significantly reduce the overall weight of the tooling, mitigating the risk of deformation caused by the weight of thin-walled parts in lateral clamping, reducing the labor intensity of operators during the clamping process of thin-walled parts, and improving work efficiency.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A thin-walled part machining air bag inner support auxiliary damping tool, characterized in that, The combination, the air bag (3) and the elastic member (5); the combination comprises a plurality of sub-blocks (2) arranged in the circumferential direction, the air bag (3) is arranged inside the combination, and the elastic member (5) is sleeved on the outer periphery of the combination; the air bag (3) is inflated to expand the elastic member (5) and each sub-block (2) to the periphery, and each sub-block (2) is collected to the center when the air bag (3) is deflated by the contraction of the elastic member (5).

2. The thin-walled part machining air bag inner support auxiliary damping tooling according to claim 1, characterized in that, The combination is arranged inside the thin-walled member (1), and the outer surface of the combination is arranged to match the inner wall structure of the thin-walled member (1); the air bag (3) is inflated to expand to push each sub-block (2) against the inner wall of the thin-walled member (1).

3. The thin-walled part machining air bag inner support auxiliary damping tooling according to claim 2, characterized in that, The sub-block (2) is provided with a groove section, and the groove sections on each sub-block (2) arranged in the circumferential direction form a containing groove, and the elastic member (5) is arranged in the containing groove.

4. The thin-walled part machining air bag inner support auxiliary damping tooling of claim 1, wherein, Two adjacent sub-blocks (2) are respectively provided with a guide rod (6) and a guide hole, and the guide rod (6) is inserted into the guide hole to realize movement guidance.

5. The thin-walled part machining air bag inner support auxiliary damping tooling of claim 4, wherein, The sub-block (2) is made of silica gel or rubber.

6. The thin-walled part machining air bag inner support auxiliary damping tooling of claim 5, wherein, An inner sleeve is embedded in the guide hole of the sub-block (2), and the guide rod (6) is inserted into the inner sleeve.

7. The thin-walled part machining air bag inner support auxiliary damping tooling of claim 1, wherein, The air bag (3) is provided with a gas nozzle (4).

8. The thin-walled part machining air bag inner support auxiliary damping tooling of claim 1, wherein, The number of the elastic member (5) is at least one, and each elastic member (5) is arranged in the height direction of the combination.

Images