Replaceable Cutter Workpiece With Extrusion-Polishing Support
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Solution Overview
Problem
Conventional cutters for molding machines face challenges in machining quality, production speed, cost, and reusability due to the need for welding and the limitations of indexable blades, which restrict their application to coarse machining and require extensive maintenance.
Innovation Solution
A workpiece with a first, second, and third outer surface forming an extrusion-acting portion, allowing for extruding and polishing, and featuring a blade portion for cut-machining, which can be rapidly replaced and assembled without welding, enabling improved machining quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional welding-type cutters are used, then the blade can be securely fixed onto the blade body, but the production cost and maintenance expense increase due to welding requirements
Solution Approach 1:
The cutter is divided into modular components: a blade body with groove and a separate blade with corresponding protrusion. The blade can be independently replaced without welding, allowing secure fixation through mechanical interlocking while simplifying manufacturing and maintenance processes
Solution Approach 2:
A groove-protrusion interface acts as an intermediary mechanism between the blade body and blade. This intermediate structure enables secure mechanical connection without requiring welding, resolving the contradiction between strong fixation and manufacturing simplicity
2Ease of repair
If indexable blades with standard shapes are used, then blade replacement becomes easier, but the cutter cannot perform squeezing, extruding or polishing operations
Solution Approach 1:
The blade is designed with a universal groove-protrusion interface that can accommodate different blade shapes and functions. This allows the same blade body to perform multiple machining operations (cutting, squeezing, extruding, polishing) by simply changing the blade insert, achieving both easy replacement and operational versatility
Solution Approach 2:
The blade configuration is made dynamic and adjustable. Different blade shapes can be inserted into the same groove based on machining requirements, allowing the cutter to adapt to various operations while maintaining easy blade replacement capability
3Duration of action of stationary object
If frequent blade replacement is performed, then the cutter can continue working after blade dulling, but production time is lost during replacement operations
Solution Approach 1:
Multiple blades are pre-loaded into the blade body grooves before machining operations begin. When one blade becomes dull, another pre-positioned blade can be quickly indexed into place without requiring time-consuming replacement operations, thus extending cutter service life while minimizing production time loss
Data Source
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AI summary
A workpiece at least includes a first outer surface, a second outer surface and a third outer surface. The third outer surface intersects the first outer surface and the second outer surface to define an extrusion-acting portion having an extruding portion. The workpiece can be used to machine a cutter in an entire or a trimmed portion thereof. Thereupon, rapid production of cutters by molding machines can be realized, and blades of the molding machine for machining the cutter become replaceable. While a blade portion is machining, the extrusion-acting portion is applied to support and guide the workpiece, such that the surface machined by the blade portion can be extruded and polished simultaneously. Thus, machining qualities of the cutter, including finish, straightness and roundness, manufactured by applying the workpiece for the molding machine can be significantly improved.