Forging High Carbon Steel Tools via Polygonal Shaping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for manufacturing tools from high carbon content materials are inefficient and costly due to material defects such as cracking, deformation, and waste generation during processing, leading to suboptimal mechanical properties.
Innovation Solution
A method involving forging and progressive shaping of high carbon content materials into symmetrical polygon forms with alternating concavities and convexities, using pressing and rolling dies to create distinct sections for the tool head and engaging portion, reducing material waste and maintaining mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional turning and milling processes are used to manufacture tools from high carbon content materials, then the tools can be produced with required shapes, but material defects such as cracking, deformation, and breakage occur during processing
Solution Approach 1:
The patent changes the processing parameters by switching from conventional turning and milling to a specialized forging process. This involves changing the fundamental processing method and its associated parameters (applied forces, temperature, deformation rates) to accommodate the high carbon content material's properties, thereby preventing cracking and deformation while achieving the required tool shapes
Solution Approach 2:
The patent replaces the conventional mechanical cutting system (turning and milling tools) with a forging system that uses controlled compressive forces. This substitution eliminates the harmful tensile and shear stresses that cause cracking in high carbon materials, while still achieving the desired tool geometry through plastic deformation
2Manufacturing precision
If conventional turning and milling processes are used to manufacture tools, then tools can be produced, but processing time is excessive and manufacturing costs increase
Solution Approach 1:
The patent applies preliminary action by performing the shaping operation during the forging process itself, rather than requiring multiple subsequent machining operations. The tool head and engaging portion are formed directly in the forging die, eliminating the need for separate turning and milling steps, thereby significantly reducing processing time and improving productivity
Solution Approach 2:
The patent merges multiple manufacturing operations into a single forging process. The forming of the tool head, engaging portion with polygon contour, and overall tool geometry are all accomplished in one integrated forging operation, eliminating the need for sequential turning, milling, and other finishing operations
3Manufacturing precision
If conventional turning and milling processes are used to manufacture tools from high carbon content materials, then tools can be produced, but significant material waste is generated
Solution Approach 1:
The patent changes the material removal parameter from significant (conventional machining) to minimal or zero (forging). By using plastic deformation instead of material removal, the process achieves the required tool geometry while maintaining nearly 100% material utilization, thereby eliminating the substantial waste associated with conventional turning and milling operations
Solution Approach 2:
The patent applies local quality by forming specific features (such as the polygon contour with alternating concavities and convexities on the engaging portion) directly during forging. This localized shaping eliminates the need for subsequent material removal operations that would generate waste, while still achieving the precise geometric requirements
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
This method enhances tool manufacturing efficiency, reduces costs, and maintains good mechanical properties by preventing material degradation during processing, resulting in a more economical and effective tool production process.
Implementation Method 1
pressing one end of the first section with a stamping die to thereby enlarge the outer diameter of the first section
Implementation Method 2
press the second section by rolling between first rolling dies so that the second section is shaped to form the polygon having alternate concavities and convexities thereon
Implementation Method 3
using pressing and rolling dies to create distinct sections for the tool head and engaging portion
Data Source
AI summary
A tool manufacturing method includes the steps of preparing a cylindrical blank, dividing the blank into sections, changing an outer diameter of one of the sections, and shaping the sections to complete a tool. During the shaping step, the section whose outer diameter is changed is shaped into a symmetrical polygon for serving as a head portion of the tool and shaping another section to obtain a polygon with alternate concavities and convexities thereon for serving as an engaging portion of the tool. Accordingly, the progressive execution of the method prevents the deterioration of the blank made of a high carbon content metal material, allows the tool to keep good mechanical properties, increases the manufacturing efficiency, and reduces manufacturing costs.