Processing Tool Centering Structure for Axis Alignment
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Solution Overview
Problem
Existing processing tools face challenges in aligning the axes of the tool and clamping handle due to manufacturing and assembly errors, leading to reduced workpiece quality and potential tool damage, especially when curved surfaces with the same radii but different centers are involved.
Innovation Solution
A positioning assembling structure with a clamping handle featuring a recess and central positioning hole, and a processing head with a protrusion and central positioning column, both with conical shapes, allowing for precise alignment and secure mounting by abutting curved surfaces, even with manufacturing errors, through a two-step assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional assembling structure with curved surfaces is used, then resource saving is achieved by replacing only worn parts, but axis alignment between tool and clamping handle deteriorates due to manufacture error
Solution Approach 1:
A positioning ring is introduced as an intermediary component between the tool and clamping handle. The positioning ring includes a positioning protrusion that fits into a positioning recess, serving as a mediator to establish accurate axis alignment. This resolves the contradiction by enabling precise alignment without requiring high-precision manufacturing of the entire assembling structure, thus allowing cost-effective replacement of worn tool parts while maintaining alignment accuracy.
Solution Approach 2:
The assembling structure is segmented into distinct functional components: the tool, clamping handle, and positioning ring. The positioning ring is separated as an independent element that specifically handles alignment functionality. This segmentation allows the positioning function to be isolated and optimized independently, enabling resource-efficient replacement of worn tool parts while the positioning ring maintains consistent alignment precision.
2Manufacturing precision
If high precision cylinder is manufactured, then assembly accuracy is improved, but manufacturing cost increases significantly
Solution Approach 1:
The positioning ring acts as an intermediary that provides the necessary positioning function without requiring the entire assembling structure to be manufactured with high precision. By concentrating the positioning function in a separate, relatively simple component, the overall manufacturing cost is reduced while maintaining assembly accuracy.
Solution Approach 2:
High precision requirements are localized only to the critical positioning surfaces of the positioning ring (the positioning protrusion and recess), rather than requiring the entire tool and clamping handle to be manufactured with high precision. This local quality approach reduces overall manufacturing costs while ensuring assembly accuracy where it is most needed.
3Ease of manufacture
If non-cylinder component with curved surfaces is used, then manufacturing cost is reduced, but assembly reliability deteriorates due to gaps and displacement
Solution Approach 1:
The positioning protrusion and recess utilize curved surfaces that conform to each other, creating a reliable fit without requiring perfect cylindrical geometry. The curved surfaces provide continuous contact and constraint, preventing gaps and displacement while maintaining manufacturing feasibility. This resolves the contradiction by achieving reliable assembly through well-designed curved surfaces rather than requiring expensive high-precision cylindrical components.
Data Source
AI summary
Disclosed is an assembling and centering structure for a processing tool, the structure having a clamping handle (10), a processing head (20), and a fastening member (30) for connecting and fixing the clamping handle (10) and the processing head (20). An end face accommodation groove (100) of the clamping handle (10) is formed with a concave part (11) and a centering hole (12). The processing head (20) is formed with a convex part (211) and a centering post (222), the convex part (211) matches the concave part (11), and the centering post (222) matches the centering hole (12). Thus, it can be ensured that after assembly, the central axis of rotation of the clamping handle (10) is in a straight line with the central axis of rotation of the processing head (20).