Flexible metal binding belt type damping device suitable for thin-wall long shaft part machining

Abstract

The invention discloses a flexible metal binding belt type damping device suitable for thin-wall long shaft part machining, which comprises metal bars, a binding belt and a lining layer, a plurality of metal bars with equal diameter and equal length are annularly arranged in the circumferential direction of a workpiece damping part, and the lining layer is arranged between the annularly arranged metal bars and the workpiece damping part. And the outer sides of the annularly arranged metal bars are tightly bundled by a bundling belt. According to the principle that the metal layer is additionally arranged on the thin-wall part of the workpiece to increase rigidity and reduce machining vibration, the vibration reduction device is designed, preparation is easy, installation is convenient, the wrapping position is flexible, machining and positioning of the workpiece are not affected, and a new solution is provided for solving the machining vibration problem of the thin-wall workpiece.

Description

Technical Field

[0001] This invention discloses a vibration damping device in the form of a flexible metal strap, suitable for machining thin-walled long shaft parts. Background Technology

[0002] Most metallic materials used in aviation and aerospace possess characteristics of high temperature resistance, high strength, and high toughness. Their main components include iron, titanium, chromium, cobalt, nickel, vanadium, tungsten, molybdenum, and manganese, forming high-quality alloy steels. Based on these high-quality alloy steels, parts designs, for the sake of weight control, exhibit characteristics of thin walls, slenderness, and high precision.

[0003] In conventional machining, grinding is one of the important means of high-precision machining. However, the high strength and high toughness of aerospace materials can easily generate a high-temperature environment in local areas during the grinding process, forming grinding cracks. The series of chemical reactions caused by the high temperature also form a surface strengthening effect, which makes the material's machinability even worse.

[0004] Microcracks and microdefects on the surface of workpieces are often difficult to control and resolve. Given the sensitivity of aerospace products to microcracks and microdefects, conventional turning processes are more controllable.

[0005] The workpiece is characterized by thin walls, slenderness, and high precision, and is machined by turning, making it quite difficult to process. The key to controlling the dimensional accuracy and surface roughness of thin-walled, slender, and high-precision workpieces lies in controlling vibration during the machining process, which existing vibration reduction devices cannot meet. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a vibration damping device in the form of a flexible metal strap, which is simple in structure and has good vibration damping effect and is suitable for the processing of thin-walled long shaft parts.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is: a vibration damping device in the form of a flexible metal binding strap suitable for processing thin-walled long shaft parts, comprising metal rods, binding straps, and an inner liner. Multiple metal rods of equal diameter and length are arranged in a ring around the circumference of the vibration damping part of the workpiece. An inner liner is provided between the ring-arranged metal rods and the vibration damping part of the workpiece. The outer side of the ring-arranged metal rods is tightly bound with binding straps.

[0008] The aforementioned vibration damping device, which is a flexible metal strapping device suitable for machining thin-walled long shaft parts, can be installed in one or more locations depending on actual needs and the structural form of the outer circle of the workpiece; or the single long outer circle segment of the workpiece can be divided into several identical strapping segments to form a distributed arrangement.

[0009] The above-mentioned vibration damping device, which is in the form of a flexible metal strap, is suitable for machining thin-walled long shaft parts. The diameter of the metal rod is determined based on the final wall thickness at the thin-walled part of the workpiece, and is 2-3 times the final wall thickness value.

[0010] The aforementioned vibration damping device, which is in the form of a flexible metal strap and is suitable for machining thin-walled long shaft parts, has an overall length of the annularly arranged metal rods equal to the circumference of the vibration damping part of the workpiece.

[0011] The aforementioned vibration damping device, in the form of a flexible metal strap, is suitable for machining thin-walled long shaft parts. Both the metal rod and the workpiece are rigid bodies.

[0012] The above-mentioned vibration damping device, which is a flexible metal strapping device suitable for processing thin-walled long shaft parts, uses nylon material for the strapping. One side of the strapping is hook and loop fastener, and the other side is adhesive. When using it, the metal rods are neatly arranged on a flat surface, and then the adhesive side of the strapping is placed over the metal rods to ensure that each metal rod is stuck.

[0013] The aforementioned vibration damping device, which is a flexible metal strapping device suitable for machining thin-walled long shaft parts, has an inner lining made of textiles and is elastic. The length of the inner lining is required to wrap around the outer circumference of the workpiece as needed for the part to be strapped.

[0014] The above-mentioned vibration damping device, which is in the form of a flexible metal strap suitable for processing thin-walled long shaft parts, also has an outer reinforcement layer on the outside of the strap. The outer reinforcement layer is made of rubber tape, which is used to reinforce and bind the binding parts.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention utilizes the principle that adding a metal layer to the thin-walled part of the workpiece can increase rigidity and reduce processing vibration. It designs a vibration damping device that is simple to prepare, easy to install, and flexible in its wrapping position. It does not affect the processing and positioning of the workpiece and provides a new solution to the problem of vibration in the processing of thin-walled parts.

[0017] 2. In this invention, the ring-shaped metal rods are of equal diameter and length, which ensures that the weight of each metal rod is the same. When attached to the workpiece, the difference in centrifugal force due to the rotation of the workpiece will not create an additional vibration source.

[0018] 3. The inner lining is made of textiles and is elastic. The length of the inner lining is required to wrap around the outer circle of the workpiece as needed for the part to be bound. Under the action of binding force, the inner lining deforms, increasing the contact area between the workpiece and the metal rod, which facilitates the transmission of the workpiece's vibration to the metal rod. This elasticity also makes the binding more secure. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of part I in the middle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 , Figure 2 As shown, a vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts includes metal rods 2, straps 1, and inner lining 3. Multiple metal rods 2 of equal diameter and length are arranged in a ring around the vibration damping part of the workpiece 5. The inner lining 3 is provided between the ring-arranged metal rods 2 and the vibration damping part of the workpiece 5. The outer side of the ring-arranged metal rods 2 is tightly bound with straps 1.

[0023] The location of the binding strap 1 can be arranged in one or more places according to actual needs and the structural form of the outer circle of the workpiece; or the single long outer circle segment of the workpiece can be divided into several identical binding straps 1 to form a distributed arrangement.

[0024] The diameter of metal rod 2 is determined based on the final wall thickness at the thin-walled section of workpiece 5, and is 2-3 times the final wall thickness value. Furthermore, the length of metal rod 2 is ensured to be consistent to avoid uneven centrifugal force generated during rotation due to the different weights of individual metal rods 2, which would lead to unnecessary vibration.

[0025] The length of the entire arrangement of the ring-shaped metal rods 2 is equal to the circumference of the vibration damping part of the workpiece 5, so that vibration damping parts of different diameters can be used.

[0026] Both the metal rod 2 and the workpiece 5 are rigid bodies. Due to their shape and size errors, they can only theoretically form a line contact, and the contact area is very small. To ensure sufficient contact and achieve the purpose of absorbing vibration, an elastic inner liner 3 needs to be added between the metal rod 2 and the workpiece 5.

[0027] The binding strap 1 is made of nylon. One side of the binding strap 1 is hook and loop fastener, and the other side is adhesive. In use, arrange the metal rods 2 neatly on a flat surface, then cover the metal rods 2 with the adhesive side of the binding strap 1, ensuring that each metal rod 2 is adhered. This combination of binding strap 1 and metal rods 2 is attached to the outer circumference of the workpiece, forming a wrapping layer that fits tightly against the workpiece 5. This increases the local weight of the workpiece 5, absorbing vibrations during processing and achieving the purpose of vibration damping for thin-walled parts.

[0028] The inner lining layer 3 is made of textiles and is elastic. The length of the inner lining layer 3 is required to wrap around the outer circle of the workpiece as needed for the part to be bound. Under the action of binding force, the inner lining layer 3 deforms, increasing the contact area between the workpiece 5 and the metal rod 2, which facilitates the transmission of the vibration of the workpiece 5 to the metal rod 2. This elasticity also makes the binding more secure.

[0029] An outer reinforcement layer 4 is also provided on the outside of the binding strap 1. The outer reinforcement layer 4 is made of rubber tape, which is used to reinforce the binding part.

[0030] The implementation process of this invention is as follows:

[0031] 1. Based on the final wall thickness at the thin-walled section of workpiece 5, determine the diameter of metal rod 2 by approximately 2 to 3 times the final wall thickness value, and then determine the number of metal rods 2, ensuring they can be arranged in a tight circle.

[0032] 2. There are no restrictions on the material of the metal rod 2, but the diameter must be the same. Usually, it can be cut from a single long bar and made into the same length.

[0033] 3. The binding strap 1 is made of nylon material, with hook and loop fastener on one side and self-adhesive on the other. When using it, arrange the metal rods 2 neatly on a flat surface, and then cover the metal rods 2 with the self-adhesive side of the binding strap 1 to ensure that each metal rod 2 is stuck. Each set of metal rods 2 requires more than two binding straps 1.

[0034] 4. The inner lining layer 3 is made of textiles. The length is required according to the parts to be bound. After wrapping around the outer circle of the workpiece (single layer), it can be fixed in several places with glue.

[0035] 5. Install the combination of binding strap 1 and metal rod 2 into the inner lining layer 3, then wrap the reserved binding strap 1 around more than one turn and use the hook and loop fasteners to secure it completely.

[0036] 6. Use rubber tape to reinforce the binding area to ensure that the binding area will not loosen during processing.

Claims

1. A vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts, characterized in that: It includes metal rods, binding straps, and an inner lining. Multiple metal rods of equal diameter and length are arranged in a ring around the circumference of the workpiece vibration damping part. An inner lining is provided between the ring-arranged metal rods and the workpiece vibration damping part. The outer side of the ring-arranged metal rods is tightly bound with binding straps.

2. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: The location of the binding straps can be arranged in one or more places depending on the actual needs and the structural form of the outer circle of the workpiece; or the single long outer circle segment of the workpiece can be divided into several identical binding straps to form a distributed arrangement.

3. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: The diameter of the metal rod is determined based on the final wall thickness at the thin-walled section of the workpiece, and is 2-3 times the final wall thickness value.

4. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: The overall length of the ring-shaped metal rods is equal to the circumference of the vibration damping section of the workpiece.

5. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: Both the metal rod and the workpiece are rigid bodies.

6. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: The binding strap is made of nylon. One side of the binding strap has hook and loop fasteners, and the other side has adhesive. When using it, arrange the metal rods neatly on a flat surface, and then cover the metal rods with the adhesive side of the binding strap to ensure that each metal rod is stuck.

7. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: The inner lining is made of textiles and is elastic. The length of the inner lining is required to wrap around the outer circumference of the workpiece as needed for the area to be bound.

8. The vibration damping device in the form of a flexible metal strap suitable for machining thin-walled long shaft parts according to claim 1, characterized in that: An outer reinforcement layer is also provided on the outside of the binding strap. The outer reinforcement layer is made of rubber tape, which is used to reinforce the binding area.

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