Annular Tightening Ring for Secure Tool Holder Assembly
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Solution Overview
Problem
Existing methods for securing tools and tool holders on rotary machines often result in deformation due to frictional and torsional forces, leading to a insecure connection that can break and fail to prevent detachment.
Innovation Solution
A system using an annular means mounted on the periphery of one part, connected translationally and interacting with the complementary part's periphery during rotation, held in place by a support structure to prevent translational movement, allowing for secure assembly without specific locking elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threaded rod is used to tighten the parts, then the parts can be securely connected, but the parts are deformed due to frictional force and axial traction
Solution Approach 1:
A tightening ring is introduced as an intermediary element between the male and female parts. The ring interacts with the periphery of the female part during rotation and applies tightening force through frictional contact, avoiding direct axial traction on the parts and preventing deformation while ensuring secure connection
Solution Approach 2:
The traditional threaded rod mechanism is replaced with a friction-based tightening ring system. Instead of using axial traction through threads, the new system uses rotational friction contact between the ring and the female part periphery to achieve tightening, eliminating the harmful mechanical deformation
2Reliability
If a tightening ring is used to secure the parts, then the connection is strengthened, but additional locking elements are required to prevent translational movement of the ring
Solution Approach 1:
The tightening ring is merged with the male part by mounting it on the male part periphery. The ring's translational movement is naturally constrained by the male part geometry and the interaction with the female part, eliminating the need for separate locking elements and simplifying the overall structure
Solution Approach 2:
The tightening ring serves multiple functions: it provides tightening force through frictional contact, prevents translational movement through its mounting on the male part, and ensures secure connection without requiring additional specialized locking components
3Reliability
If close fitting is used to secure the parts, then the connection is secure, but the outer diameter of the male part must be only slightly greater than the inner diameter of the female part
Solution Approach 1:
The tightening ring acts as a mediator that enables secure connection without requiring tight dimensional tolerances. It provides the necessary connection force through frictional contact, allowing the male part outer diameter to be significantly smaller than the female part inner diameter while maintaining connection security
Data Source
AI summary
An assembly for tightening and securing includes a first male part and a second female part fitted together, which have complementary forms. The fitting includes at least one contact surface of the first part with the second part. The assembly also includes at least one annular means mounted on the periphery of one of the two parts. The annular means is connected in a translational manner to the part on which the annular means is mounted when the annular means abuts with the part on which the means is mounted, and arranged to interact with a peripheral surface of the complementary part during a rotation of the annular means in relation to the complementary part.