Cutting-bit Holder Block Cavity Design for Tool Access

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Solution Overview

Problem

Conventional cutting-bit holder blocks have limited access for tool insertion to remove cutting-bits or broken portions, and they can be difficult to attach securely to a rotatable cutting drum.

Innovation Solution

The cutting-bit holder block design includes a forward mounting portion with an aperture for holding the cutting-bit, an interior portion, a bottom mounting portion, a side portion, and a cavity that extends from the interior portion to the bottom mounting portion, allowing for improved access and secure attachment to the cutting drum.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional cutting-bit holder block design is used, then the structure is simple, but access for tool insertion to remove cutting-bits is limited

Engineering Contradiction:
Improveaccess for tool insertionVSAvoidblock structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The holder block is divided into multiple functional portions: a forward mounting portion with an aperture for the cutting-bit, a cavity in the side portion for tool insertion, and a bottom mounting portion for attachment to the drum. This segmentation creates distinct access paths - tools can insert through the cavity in the side portion while the cutting-bit is held in the forward mounting portion, resolving the contradiction between simple structure and ease of operation.

Inventive Principle:
Principle #1Segmentation

2Ease of repair

If a conventional cutting-bit holder block design is used, then manufacturing is simple, but removal of broken portions is difficult

Engineering Contradiction:
Improveremoval of broken portionsVSAvoidblock structure
Core Design Contradiction:
Ease of repairVSEase of manufacture

Solution Approach 1:

A cavity is extracted from the side portion of the holder block, creating a dedicated access channel that extends from the exterior to the interior portion. This extracted cavity allows tools to reach into the holder block and remove broken portions of cutting-bits without requiring complex disassembly or specialized access points, thereby improving ease of repair while maintaining manufacturing simplicity.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If a conventional cutting-bit holder block design is used, then attachment to cutting drum is straightforward, but secure attachment is difficult

Engineering Contradiction:
Improveattachment securityVSAvoidmounting mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The bottom mounting portion is designed with localized features that provide secure attachment to the cutting drum. The cavity in the side portion and the aperture in the forward mounting portion are positioned to create a stable configuration where the holder block can be reliably attached to the drum while maintaining access for tool insertion and cutting-bit removal.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20250129720A1Block for holding a cutting bit
Publication Date: 2025.04.24 KENNAMETAL INC
  • US20250129720A1 patent drawing
  • US20250129720A1 patent drawing
  • US20250129720A1 patent drawing

AI summary

A cutting-bit holder block may include a forward mounting portion, an interior portion, a bottom mounting portion, a side portion, and a cavity. The forward mounting portion may define an aperture sized to hold a cutting-bit. The interior portion may be disposed within the cutting-bit holder block. The aperture may extend from the forward mounting portion to the interior portion. The side portion may extend from the forward mounting portion to the bottom mounting portion. The cavity may be disposed in the side portion. The cavity may extend from the interior portion to the bottom mounting portion. The cavity may be in communication with the aperture.