Tool Coating with Hard Particles via Adhesive Film Transfer
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Solution Overview
Problem
Existing methods for producing abrasive tools with hard material particles face challenges in ensuring rapid and secure adhesion of these particles to the base body, particularly during the soldering process, as only particles in contact with adhesive droplets adhere effectively, leading to inefficiencies in coverage and anchoring.
Innovation Solution
A method involving the application of an adhesive film to the tool's surface, followed by distributing hard material particles on a support surface, positioning the tool above, and using a controlled movement to transfer the particles onto the adhesive surface, allowing for uniform coverage and secure adhesion, with optional zone-dependent density and type variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adhesive droplets are applied to the substrate and hard particles are sprinkled onto it, then hard particles can adhere to the substrate, but the coverage is uneven and only particles in contact with adhesive droplets adhere effectively
Solution Approach 1:
The adhesive is applied as a continuous film before the hard particles are introduced, creating a pre-prepared adhesive surface that ensures uniform distribution of particles. This preliminary action of applying the adhesive film across the entire substrate surface allows all particles to adhere uniformly, eliminating the uneven coverage problem while maintaining efficient coating speed.
Solution Approach 2:
The method replaces the mechanical sprinkling process with a controlled transfer mechanism where particles are moved from a support surface to the adhesive-coated substrate. This substitution allows for precise control of particle placement and uniform distribution, achieving both high manufacturing precision and productivity.
2Strength
If hard particles are sprinkled onto adhesive droplets, then particle adhesion occurs, but the adhesion strength is insufficient until soldering anchors them
Solution Approach 1:
The adhesive film is applied in advance across the entire substrate surface before particles are introduced. This preliminary adhesive layer provides immediate and uniform adhesion strength to all particles upon contact, eliminating the weakness of droplet-based adhesion. The particles are securely anchored by the continuous adhesive film from the moment of contact, reducing the time until secure anchoring.
Solution Approach 2:
The adhesive is formulated and applied as a continuous film with controlled thickness and viscosity parameters, rather than as discrete droplets. This parameter change in the adhesive application method creates a uniform adhesive field that provides consistent and strong adhesion across the entire substrate surface, enhancing both adhesion strength and speed.
3Manufacturing precision
If adhesive film is applied evenly to the entire working surface, then uniform particle distribution is achieved, but the process complexity increases
Solution Approach 1:
The coating process is segmented into distinct stages: first applying the adhesive film to the substrate, then introducing particles from a separate support surface. This segmentation allows each stage to be optimized independently - the adhesive application ensures uniform coverage, while the particle transfer from the support surface controls particle distribution, achieving high manufacturing precision without excessive overall complexity.
Solution Approach 2:
A support surface is introduced as an intermediary element to hold and transfer hard particles to the adhesive-coated substrate. This intermediary device simplifies the overall process by providing a controlled source of particles that can be easily transferred to the adhesive film, achieving uniform particle distribution without requiring complex particle delivery systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid and uniform coating of tools with individual hard material particles, ensuring secure adhesion until soldering, facilitating efficient and consistent anchoring of the particles on the tool's surface.
Implementation Method 1
an adhesive film is applied evenly to the entire or part of the working surface of the tool to be manufactured
Data Source
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Figure 5
AI summary
In a process for producing a base body with hard particles, an adhesive (23) with a defined film thickness is first applied to all or part of the working surface (20') of the tool to be produced. The hard particles (22) are then applied to the areas of the working surface coated with the adhesive (23) for permanent adhesion. Using a device, the hard particles (22) are applied uniformly and then transferred to the working surface (20') of the tool (20) coated with the adhesive (23), where they adhere before the adhesive (23) has cured. This process enables the rapid coating of the tool's working surface with a uniform number of individual hard particles per unit area, which can be determined.