Bevel guide type metal clad non-destructive stripping tool

Abstract

This invention belongs to the field of composite material surface treatment technology, and relates to an angled-guided non-destructive peeling tool for metal coatings. The tool includes: a cutting head, an elastic buffer assembly, an anti-slip handle assembly, and a fixing screw; the anti-slip handle assembly has a long blind hole along its height direction, the elastic buffer assembly is installed at the bottom of the long blind hole, and the elastic buffer assembly and the cutting head are connected by the fixing screw; when the elastic buffer assembly is compressed, the long blind hole is embedded in the cutting head; when the elastic buffer assembly is not under external pressure, the cutting head extends out of the long blind hole.

Description

Technical Field

[0001] This utility model belongs to the field of composite material surface treatment technology, and relates to an angled guide non-destructive peeling tool for metal coatings. Background Technology

[0002] In recent years, composite materials (such as carbon fiber and glass fiber reinforced plastics) have been widely used in the aerospace field due to their lightweight and high strength properties. To impart electrical properties such as conductivity and shielding, a metal layer (such as copper foil or aluminum film) is often plated on the surface. However, in practical applications, it is necessary to selectively remove parts of the metal layer to form specific circuit patterns. Existing technologies include traditional mechanical scraping tools (such as blades and spatulas) which easily scratch the composite material matrix, leading to product scrapping; chemical etching methods are highly polluting and costly, and are not suitable for localized fine operations; laser etching equipment is expensive, has stringent requirements for the operating environment, and is inefficient, wasting equipment resources. Utility Model Content

[0003] Purpose of the utility model: To provide an angled guide metal coating non-destructive peeling tool to solve the problem of damage to the substrate caused by existing tools during the metal coating peeling process.

[0004] Technical solution: A non-destructive peeling tool for angled guided metal coatings is provided, comprising: a cutting head, an elastic buffer assembly, an anti-slip handle assembly, and a fixing screw; The anti-slip handle assembly has a long blind hole along the height direction, and the elastic buffer assembly is installed at the bottom of the long blind hole. The elastic buffer assembly and the cutter head are connected by a fixing screw. When the elastic buffer assembly is compressed, the long blind hole is embedded in the cutter head. When the elastic buffer assembly is not under external pressure, the cutter head extends out of the long blind hole.

[0005] Furthermore, the cutter head is an angled guide blade used to remove aerospace metal layers.

[0006] Furthermore, the chamfer angle θ of the beveled guide insert satisfies: arctan(t / d) ≤θ≤arcsin(μF N / F 揭离 ); t is the tip thickness, d is the metal layer thickness, μ is the coefficient of friction between the cutting tip and the metal layer, and F is the metal layer thickness. N The normal pressure of the cutter head on the coating; F 揭离 This refers to the interfacial bonding force of the metal layer.

[0007] Furthermore, the elastic cushioning assembly includes a spring and a spring seat. The spring is fixed at both ends with spring seats. The top spring seat is fixed to the fixing screw, and the bottom spring seat is installed in the long blind hole.

[0008] Furthermore, the elastic cushioning component is a silicone pad.

[0009] Furthermore, the anti-slip handle assembly includes a handle and a handle base; The handle and handle base are installed together, and the internal cavity forms a long blind hole. Furthermore, 15°≤θ≤30°.

[0010] Furthermore, the formula for calculating the retraction amount Δx of the elastic buffer component is: Δx = F 压力 / k; Among them, F 压力 It is the vertical pressure acting on the cutter head; k is the elastic coefficient.

[0011] Beneficial effects: Non-destructive peeling: Avoid scratching the composite skin when removing the metal coating.

[0012] Safety and splash prevention: The blade has a built-in chamfered guide structure to prevent the blade tip from accidentally slipping out during operation.

[0013] Adaptive pressure: The elastic design makes the pressure of the cutter head controllable, avoiding the insertion of excessive force into the substrate.

[0014] Precise guidance: The cutter head moves along the coating interface to avoid slippage.

[0015] Elastic buffer: Automatically adjusts the blade pressure to adapt to different operating forces.

[0016] High efficiency and safety: Reduces rework rate and improves operational efficiency and safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a non-destructive peeling tool for angled guide metal coatings.

[0018] Figure 2 This is an outline drawing of an angled guide non-destructive peeling tool for metal coatings. Detailed Implementation

[0019] This utility model provides an angled guide type non-destructive peeling tool for metal coatings, such as... Figure 1-2 As shown, it includes: a blade head 1, an elastic buffer assembly 2, an anti-slip handle assembly 3, and a fixing screw 4; The anti-slip handle assembly has a long blind hole along the height direction, and the elastic buffer assembly is installed at the bottom of the long blind hole. The elastic buffer assembly and the cutter head are connected by a fixing screw. When the elastic buffer assembly is compressed, the long blind hole is embedded in the cutter head. When the elastic buffer assembly is not under external pressure, the cutter head extends out of the long blind hole.

[0020] The blade is an angled guide type, used to remove aerospace metal layers.

[0021] The elastic cushioning assembly includes a spring and a spring seat. The spring has fixed spring seats at both ends. The top spring seat is fixed to the fixing screw, and the bottom spring seat is installed in a long blind hole. For example, the elastic buffer assembly can be made of spring steel blades (65Mn or SAE 1070) with an elastic stroke of 0.1-0.5mm.

[0022] The elastic cushioning component is a silicone pad.

[0023] The anti-slip handle assembly 3 includes a handle 31 and a handle base 32; The handle and handle base are installed together, and the internal cavity forms a long blind hole. The handle has a modular blade slot at the end for quick replacement.

[0024] Core structural design 1. Chamfered guide structure: 1) Mechanical model of the chamfered guide structure: Separation force decomposition formula: F (揭离) =F 操作 / cosθ Parameter description: F 揭离 The effective peeling force (N) acting on the coating interface is equal to the bonding force of the coating interface; F 操作 : Thrust applied during operation (N) θ: Chamfer angle (15°-30°) 2) Design basis: When θ = 20°, F (揭离) Only F 操作 1.06 times that of conventional tools, significantly reducing transverse shear force (F when θ=0°). (揭离) =F 操作 3) The cutting head tip is designed with a 15°-30° bevel angle to form a guide edge that fits the interface between the metal coating and the substrate, guiding the cutting head along a predetermined trajectory. An anti-slip groove is provided on the inner side of the bevel to enhance the gripping force between the cutting head and the coating, preventing deviation.

[0025] Basis for choosing 15°–30°: ∵ Minimum constraint angle (to prevent substrate damage) θ 最小 =arctan(t / d) Parameter description: θ 最小 Minimum safe angle for the blade (°) t: Tip thickness (mm), design value t = 0.05mm d: Metal layer thickness (mm), typical value d = 0.1mm Calculation example: θ 最小 =arctan(0.05 / 0.1) = 26.6° Design significance: When θ < 26.6°, the blade tip easily penetrates the substrate. This utility model limits θ to ≥ 15° to provide a safety margin.

[0026] ∵ Maximum constraint angle (anti-slip failure) θ 最大 =arcsin(μF N / F 揭离 ) Parameter description: θ 最大 Maximum effective guide angle of the blade (°) μ: Friction coefficient between the cutter head and the coating (μ≈0.3) F N Normal pressure (N) of the cutter head on the coating. F 揭离 : Interfacial bonding strength of the coating (N), typical value 5 N / cm Calculation example: θ 最大 =arcsin(0.42*3 / 5)≈30°——The feasible region that satisfies θ≤30°.

[0027] 2. Flexible cutter head assembly: 1) Calculation of the retraction amount of the elastic buffer component Hooke's Law Correction Formula: △x=F 压力 / k Parameter description: △x: cutter head retraction amount (mm) F 压力 Vertical pressure (N) applied to the cutter head k: Taking silicone pads as an example, the elastic modulus of silicone pads (N / mm) Experimental calibration: Shore A hardness 50A silicone rubber k = 0.5 ± 0.05 N / mm When F 压力 When the current is 10N, Δx = 0.03mm (which matches the design value of 0.1-0.5mm). 2) Spring steel type: The blade is made of 65Mn (GB standard) or SAE 1070 (international standard) spring steel with the following performance parameters: tensile strength ≥980 MPa, elastic modulus 210 GPa, hardness HRC 45-50 (after heat treatment) to ensure high elasticity and wear resistance.

[0028] 3. Performance Verification: When a pressure of 10N is applied, the cutter head retraction is 0.3mm (in line with the design value), and the reset accuracy is ±0.02mm.

[0029] 4. Ergonomic handles: The handle features an asymmetrical curved design that fits the hand at a comfortable grip angle, and its surface is covered with a non-slip texture. A multi-functional slot at the tail allows for quick replacement of 5mm, 10mm, and 15mm wide blades.

[0030] Example 1 This utility model has been applied to the peeling and processing of a certain type of copper foil and has been implemented in the production site, processing more than 100 products. Using this tool, a 10mm wide blade (65Mn spring steel) is selected, installed into the handle slot and locked. The chamfered cutting edge is embedded into the edge of the aluminum foil, and the blade is pushed forward at a uniform speed along a 20° guide angle. The elastic component (50A silicone pad) automatically adjusts the pressure. After peeling, the substrate is scratch-free, and the aluminum foil is completely peeled off, reducing the operator's labor intensity, reducing labor costs, and improving product quality.

[0031] Case 1: Calculation of parameters for removing aviation aluminum foil Input parameter: F 操作 =4N, θ=20°, k=0.5N / mm Output: F (揭离) = 4 / cos20°≈4.26N (meets the aluminum foil peeling force requirement of ≤5N) When unexpected pressure F 压力 When the current is 15N, Δx = 15 / 0.5 = 0.3mm (not exceeding the limit). Technical benefits 1) The separation force is greatly reduced: Calculated using the separation force comparison formula: ╲eta=╲left(1-╲frac{F_{text{this tool}}} {F_{text{traditional}}}} ╲right) ╲times100╲%=╲left(1-╲frac{4.2}{6.5}╲right) ╲times100╲%=35.4╲% Percentage reduction in separation force (measured at 35.4%, consistent with theoretical values) 2) Zero damage to the substrate: After peeling, the surface roughness Ra ≤ 0.15 μm (microscopic inspection), and the damage rate ≤ 1%.

[0032] Substrate protection rate formula: R_{text{no damage}}=╲left(1-╲frac{N_{text{damaged}}}{N_{text{total}}}╲right) ╲times100╲%=100% N (damage): Number of damage samples (0 in this tool) N (total): Total number of test samples (50 groups) 3) Peeling accuracy: ±0.1mm, meeting high-precision industrial requirements (microscope inspection).

[0033] Economic benefits The tool cost is only 1 / 100,000 of that of laser equipment, and the time required for a single operation is reduced by 40%, reducing the use scenarios and time of large equipment, thereby increasing economic benefits.

[0034] Modular design adapts to multiple application scenarios, reducing overall costs.

[0035] Environmental benefits It effectively reduces etching time and the emission of toxic gases.

Claims

1. A non-destructive peeling tool for angled guided metal coatings, characterized in that, include: The blade, elastic buffer assembly, anti-slip handle assembly, and fixing screw; The anti-slip handle assembly has a long blind hole along the height direction, and the elastic buffer assembly is installed at the bottom of the long blind hole. The elastic buffer assembly and the cutter head are connected by a fixing screw. When the elastic buffer assembly is compressed, the long blind hole is embedded in the cutter head. When the elastic buffer assembly is not under external pressure, the cutter head extends out of the long blind hole.

2. The tool according to claim 1, characterized in that, The blade is an angled guide type, used to remove aerospace metal layers.

3. The tool according to claim 2, characterized in that, The chamfer angle θ of the beveled guide insert satisfies: arctan(t / d) ≤ θ ≤ arcsin(μF N / F 揭离 ); t is the tip thickness, d is the metal layer thickness, μ is the coefficient of friction between the cutting tip and the metal layer, and F is the metal layer thickness. N The normal pressure of the cutter head on the coating; F 揭离 This refers to the interfacial bonding force of the metal layer.

4. The tool according to claim 1, characterized in that, The elastic cushioning assembly includes a spring and a spring seat. The spring is fixed at both ends with spring seats. The top spring seat is fixed to the fixing screw, and the bottom spring seat is installed in the long blind hole.

5. The tool according to claim 1, characterized in that, The elastic cushioning component is a silicone pad.

6. The tool according to claim 1, characterized in that, The anti-slip handle assembly includes a handle and a handle base; The handle and handle base are installed together, and the internal cavity forms a long blind hole.

7. The tool according to claim 3, characterized in that, 15° ≤ θ ≤ 30°.

8. The tool according to claim 4 or 5, characterized in that, The formula for calculating the retraction amount Δx of the elastic buffer component is: Δx = F 压力 / k; Among them, F 压力 It is the vertical pressure acting on the cutter head; k is the elastic coefficient.

Images