Modular Planishing Hammer Attachments for Stepping and Flanging

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Solution Overview

Problem

Conventional handheld planishing hammers lack the adaptability needed to perform complex operations such as stepping, flanging, shrinking, and stretching, requiring multiple tools or custom solutions that lead to inefficiencies and inconsistent results.

Innovation Solution

A modular attachment system comprising a stepper, flanger, and shrinker/stretcher attachments, designed to be securely integrated with planishing hammers and air-powered chisels, enabling precise execution of specialized metalworking tasks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional handheld planishing hammers are used, then basic planishing operations can be performed, but the tools lack adaptability for complex operations such as stepping, flanging, shrinking, and stretching

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool system is segmented into a base planishing hammer and separate modular attachments. Each attachment (stepper, flanger, shrinker/stretcher) is an independent module that can be attached or detached as needed, allowing the basic hammer to remain simple while gaining complex capabilities when attachments are added.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A universal attachment interface is designed to accommodate multiple different attachment types on a single planishing hammer. This allows one hammer to perform multiple functions (planishing, stepping, flanging, shrinking, stretching) by simply changing attachments, eliminating the need for multiple specialized tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple separate tools are used to perform different metalworking operations, then specialized functions are available, but inefficiencies and increased costs occur

Engineering Contradiction:
ImprovefunctionalityVSAvoidefficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

Multiple specialized tools (stepper, flanger, shrinker/stretcher) are merged into a single integrated system through the modular attachment interface. The user maintains one base hammer and swaps attachments as needed, combining the functionality of what would otherwise require multiple separate tools into one unified system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tool configuration is made dynamic through quick-change attachments that allow the user to adapt the hammer's function on-the-fly. Rather than being fixed to one function, the tool dynamically changes capabilities by attaching different modules, improving efficiency by eliminating tool changes between operations.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If custom solutions are created to perform specialized operations, then specific tasks can be accomplished, but inconsistent results and increased costs occur

Engineering Contradiction:
Improvespecialized capabilityVSAvoidprecision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

Each attachment is designed with specialized features optimized for its specific function (ridged die for stepping, curved dies for flanging, interchangeable dies for shrinking/stretching). This local specialization ensures high precision for each operation while maintaining overall system versatility through the modular architecture.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20250178062A1Modular attachments for a planishing hammer
Publication Date: 2025.06.05 BURESH THEODORE ALLEN
  • US20250178062A1 patent drawing
  • US20250178062A1 patent drawing
  • US20250178062A1 patent drawing

AI summary

The present invention introduces a system of modular attachments for planishing hammers and pistol-style air hammer/chisels, significantly enhancing their functionality and versatility in metalworking applications. The modular system includes three specialized attachments: the stepper, for creating precise stepped profiles; the flanger, for forming reinforced edges and flanges; and the shrinker/stretcher, for shaping complex curves through controlled shrinking and stretching. Each attachment integrates seamlessly with the tools via an attachment interface, designed for secure installation, rapid replacement, and ergonomic adaptability. The attachments can be used individually or in combination, offering precision and efficiency for tasks in automotive restoration, aerospace fabrication, artistic metalworking, and more. The invention also includes an innovative interface for use with handheld planishing hammers or air-powered chisels, enabling portable and powerful performance. By expanding the range of operations achievable with a single tool, this invention provides a versatile, efficient, and precise solution for modern metalworking.