Multi-Material Punch Teeth for Longer Tool Life
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Solution Overview
Problem
Existing power tool punches are prone to wear and tear, leading to reduced tool life and compromised performance when creating holes in various materials.
Innovation Solution
The development of a punch for power tools that incorporates multiple materials, including wear-resistant materials on cutting surfaces, such as carbides and hardened steel alloys, with metallurgical bonding methods like welding, brazing, or cladding processes to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single material is used for the entire punch, then the device complexity is low and manufacturing is simple, but the wear resistance and tool life are reduced
Solution Approach 1:
The patent applies composite materials by combining a base material (such as steel) with a wear-resistant material (such as carbide or ceramic) to create a punch that has both structural integrity and enhanced wear resistance. The wear-resistant material is applied to the cutting surfaces while the base material provides the overall structural support, resolving the contradiction between simplicity and performance.
Solution Approach 2:
The patent implements local quality by applying wear-resistant materials specifically to the cutting surfaces and teeth of the punch where wear occurs most frequently, rather than making the entire punch from wear-resistant material. This localized application maintains overall device simplicity while providing enhanced durability at critical areas.
2Reliability
If wear-resistant materials are applied to cutting surfaces, then the wear resistance improves, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies wear-resistant materials to the punch during the manufacturing process before the punch is put into service. This preliminary application of protective coatings or material layers ensures that the wear resistance is built-in from the start, avoiding the need for complex maintenance or reapplication processes later.
Solution Approach 2:
The patent replaces mechanical fastening methods with metallurgical joining processes such as welding, brazing, or diffusion bonding to attach wear-resistant materials to the base punch. This substitution creates a more durable and integrated structure, though it does increase manufacturing complexity, it ensures long-term reliability.
3Reliability
If multiple materials are combined in the punch, then the performance and durability are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses intermediary layers or bonding agents between the base material and wear-resistant material to facilitate proper adhesion and reduce manufacturing precision requirements. These intermediary layers help accommodate differences in thermal expansion, contraction, and bonding characteristics between dissimilar materials.
Solution Approach 2:
The patent employs parameter changes such as controlling temperature, pressure, and time during the bonding process to optimize the joining of multiple materials. By carefully adjusting these parameters, the manufacturing process can achieve reliable bonds between different materials while maintaining acceptable precision levels.
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
The multi-material design significantly improves the longevity and cut quality of power tool punches by reducing wear and maintaining performance over time.
Implementation Method 1
metallurgical joining processes (e.g., welding, brazing, soldering, vapor deposition, etc.)
Implementation Method 2
metallurgical joining processes (e.g., welding, brazing, soldering, vapor deposition, etc.)
Implementation Method 3
The second material is metallurgically joined with body
Implementation Method 4
the second material is laser hardened, flame hardened, induction hardened, or electron beam hardened
Implementation Method 5
the second material is laser hardened, flame hardened, induction hardened, or electron beam hardened
Implementation Method 6
the second material is laser hardened, flame hardened, induction hardened, or electron beam hardened
Implementation Method 7
the second material is laser hardened, flame hardened, induction hardened, or electron beam hardened
Data Source
AI summary
A punch is provided, such as can be used with a knockout punch tool to make a hole in a workpiece. The punch has a base including a first material and a plurality of teeth extending from the base. Eash of the plurality includes a body and a tip and the plurality of teeth include a second material having a material property that is different from the first material.