Tool Holder Angular Pressing Member Vibration Control
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Solution Overview
Problem
Conventional tool holders cause damage and breakage of plate-shaped tools during machining due to inadequate support against vibrations, leading to rapid wear and increased manufacturing costs.
Innovation Solution
A tool holder design featuring a recessed holding portion with a clearance hole in the angular pressing member that positions the tool's rear tip under the hole, preventing contact with the pressing member and distributing the tool's weight more evenly, thus reducing the risk of damage and allowing for tool repositioning when tips become blunt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the angular pressing member is pressed against a small portion of the rear end of the plate-shaped tool, then the tool holder structure is simple, but the tool is prone to damage and breakage during vibration
Solution Approach 1:
The angular pressing member is divided into multiple functional segments: a pressing portion that contacts the upper surface of the tool, a clamping portion with recesses that engage the rear end of the tool, and a positioning portion with protrusions that fit into corresponding recesses. This segmentation allows each part to perform its specific function effectively, improving tool stability without significantly increasing overall structural complexity
Solution Approach 2:
The recesses in the clamping portion are designed to receive and nest the rear end of the plate-shaped tool, creating a nested configuration where the tool fits within the angular pressing member's clamping structure. This nesting arrangement provides secure support and prevents vibration-induced damage
2Device complexity
If the plate-shaped tool is held by a conventional method, then the tool holder structure is simple, but the tool wears rapidly and service life is reduced
Solution Approach 1:
The angular pressing member features localized functional zones: the pressing portion applies concentrated force to the upper surface of the tool for secure holding, while the clamping and positioning portions provide distributed support at the rear end. This local differentiation of qualities ensures optimal contact and support distribution, reducing wear and extending tool service life
Solution Approach 2:
The recesses and protrusions are pre-configured in specific positions and orientations before tool installation. The recesses in the clamping portion and protrusions in the positioning portion are designed in advance to match the tool's geometry, ensuring proper alignment and secure engagement without requiring additional adjustment steps
3Ease of operation
If the angular pressing member is pressed against the rear portion of the tool, then the tool can be held in place, but the rear tip of the tool hits the pressing member during vibration causing damage
Solution Approach 1:
The harmful contact between the rear tip of the tool and the angular pressing member is eliminated by extracting the pressing function to a different location. The pressing portion is positioned to contact the upper surface of the tool away from the rear tip, while the clamping portion provides support without creating conflict zones where vibration could cause impact damage
Data Source
AI summary
A tool holder includes a main part, and an angular pressing member; the main part has a fitting portion at one end, and holding portion adjacent to a front edge of and lower than the fitting portion; the angular pressing member has a recessed holding portion, which has a receiving hole, and a protruding portion therein; a pad is screwed onto the holding portion, and a tool is fixed on the pad to be closely in touch with the front edge of the fitting portion; the angular pressing member is screwed onto the fitting portion such that the recessed holding portion fits over a rear portion of the tool, and the protruding portion is pressed against an upper side of the tool, and an edge of the tool closely touches an edge of the recessed holding portion, and a rear tip of the tool is received in the receiving hole.