Variable-Hardness Clamping Member for Vibration-Stable Turning
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Solution Overview
Problem
Conventional clamping members for cutting tools in turning processes lack effective hardness control and stability, leading to positional deviations and vibration issues during the cutting process, which affect the quality of the machined surface.
Innovation Solution
A clamping member with a columnar shape featuring upper and lower jaws and a pocket, where the jaws are made of materials with different hardness levels, allowing for adjustable hardness to stabilize the cutting tool and absorb vibrations, thereby improving surface quality and positional stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamping member is made of uniform hardness material, then the structure is simple and easy to manufacture, but it cannot effectively absorb vibrations and control positional deviations during cutting
Solution Approach 1:
The clamping member is divided into multiple regions with different hardness values: a first region with first hardness, a second region with second hardness different from the first, and a third region with third hardness different from both. This local quality differentiation allows specific regions to optimize for vibration absorption, positional stability, or cutting force resistance, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The clamping member employs a composite structure with multiple materials or heat-treated zones having different hardness characteristics. This composite approach enables the single clamping member to simultaneously provide vibration damping in softer regions and structural rigidity in harder regions, eliminating the need for multiple separate components while improving positional stability.
2Strength
If the clamping member uses high hardness material throughout, then strength and rigidity are improved, but vibration absorption capability decreases leading to poor surface quality
Solution Approach 1:
Different regions of the clamping member are assigned different hardness levels: regions requiring vibration absorption have lower hardness, while regions requiring strength and rigidity have higher hardness. This spatial differentiation of material properties allows the clamping member to simultaneously exhibit both vibration-damping and high-strength characteristics, resolving the contradiction between strength and vibration control.
3Object-affected harmful factors
If the clamping member uses low hardness material, then vibration absorption is improved, but positional stability and resistance to cutting forces deteriorate
Solution Approach 1:
The clamping member incorporates soft regions for vibration absorption and hard regions for positional stability. The soft regions dampen cutting vibrations, while the hard regions maintain precise positioning and resist deformation under cutting forces, simultaneously achieving both vibration control and positional stability.
Solution Approach 2:
The clamping member uses a composite construction combining materials with different hardness properties in specific configurations. This allows the structure to exhibit vibration-damping behavior where needed while maintaining rigidity and positional accuracy in critical load-bearing regions, resolving the contradiction between vibration absorption and positional stability.
Data Source
AI summary
A clamping member in a non-limiting aspect of the present disclosure may have a columnar shape extended from a first end to a second end. The clamping member may include an upper jaw, a lower jaw and a pocket. The upper jaw and the lower jaw may be located away from each other. The pocket may be located between the upper jaw and the lower jaw. The upper jaw may include a first member and a second member. The second member may be located closer to the first end than the first member. Hardness of the first member may be first hardness, and hardness of the second member may be second hardness. The first hardness may be different from the second hardness.