Adjustable Cutting Tool Plate for Chatter Suppression
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Solution Overview
Problem
Conventional cutting tools with fixed projection lengths face challenges in achieving deep grooving without surface quality degradation due to chatter vibration, necessitating an adjustable cutting edge mechanism for improved stability and surface finish.
Innovation Solution
A cutting tool design featuring a plate member with a curved first side surface and an inclined bottom surface, securely fastened by a tool block with restraining surfaces, allowing adjustable projection length and enhanced clamping rigidity to suppress chatter vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the projection length of the cutting edge is increased to enable deep grooving without interference, then the ability to groove to greater depth is improved, but chatter vibration easily occurs which degrades the quality of the finished surface
Solution Approach 1:
The invention applies the dynamics principle by making the projection length of the cutting edge adjustable rather than fixed. The clamp member allows the plate member to be positioned at different distances from the tool block, enabling the projection length to be dynamically changed based on machining requirements. This resolves the contradiction by allowing operators to select longer projection lengths for deep grooving when needed, and shorter projection lengths when surface quality is the priority, thus adapting to different working conditions.
Solution Approach 2:
The invention applies the parameter changes principle by enabling variation in the projection length parameter of the cutting edge. Through the adjustable positioning mechanism involving the clamp member and restraining surfaces, the distance between the tool block and plate member can be modified, thereby changing the projection length parameter. This allows optimization of the parameter according to specific machining conditions, resolving the trade-off between deep grooving capability and surface quality.
2Manufacturing precision
If the projection length of the cutting edge is decreased to suppress chatter vibration and improve surface quality, then the quality of the finished surface is improved, but the ability to groove to greater depth without interference is reduced
Solution Approach 1:
The adjustable positioning mechanism enables dynamic adjustment of the projection length, allowing operators to reduce the projection length when surface quality is the priority. The clamp member can reposition the plate member closer to the tool block, decreasing the projection length and thus suppressing chatter vibration, while still maintaining the capability to achieve deep grooving when the projection length is increased, resolving the contradiction between surface quality and grooving depth capability.
Solution Approach 2:
The invention enables changes in the projection length parameter to optimize surface quality. By adjusting the position of the plate member relative to the tool block through the clamp mechanism, the projection length parameter can be reduced when high surface quality is required, thereby suppressing chatter vibration while maintaining the flexibility to increase the parameter when deep grooving is needed.
3Adaptability or versatility
If the plate member is loosely held to allow easy adjustment of projection length, then the adjustability is improved, but tool rigidity decreases which increases chatter vibration
Solution Approach 1:
The invention applies dynamics by implementing an adjustable clamping mechanism that can transition between different states of restraint. The clamp member can be positioned at different locations along the plate member, providing adaptable rigidity. When adjustment is needed, the clamp can be loosened and repositioned; when stability is required, the clamp provides firm restraint. This dynamic adaptability resolves the contradiction between adjustability and rigidity.
Solution Approach 2:
The invention applies local quality by providing restraint at specific locations rather than uniformly across the entire plate member. The clamp member applies localized clamping force at the position where it contacts the plate member, while the bottom and side restraining surfaces provide localized support at the interface with the tool block. This localized restraint strategy provides sufficient rigidity where needed while allowing adjustment capability, resolving the contradiction between adaptability and strength.
4Strength
If the plate member is tightly clamped to increase tool rigidity and suppress chatter vibration, then the tool stability is improved, but the ease of adjusting projection length is reduced
Solution Approach 1:
The adjustable clamp mechanism provides dynamic rigidity - when the clamp is tightened, it provides strong restraint for high rigidity and chatter suppression; when the clamp is loosened, it allows easy adjustment of the plate member position. This dynamic characteristic resolves the contradiction between tool stability during cutting and ease of adjustment during setup, as the system can be in different states depending on the operational phase.
Solution Approach 2:
The invention uses localized restraint through the clamp member and restraining surfaces, providing tight clamping only at the contact points necessary for stability, rather than uniformly restraining the entire plate member. This localized approach maintains tool rigidity where needed while leaving other areas free for adjustment, resolving the contradiction between tool stability and ease of adjustment.
Data Source
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AI summary
A plate member of a cutting tool has two side surfaces being substantially rectangular in shape, a top surface and a bottom surface extending in a direction along a long side of the rectangle, and two end surfaces in a short-side direction. A cutting edge is located on the side of one of the end surfaces. One of the side surfaces is a curved surface bulging outward. The bottom surface has an inclined portion which is inclined with respect to the top surface. The plate member is held by a tool block having a bottom restraining surface which comes into contact with the bottom surface, and is fastened to the tool block by using a clamp member having a top restraining surface which comes into contact with the top surface of the plate member. This allows adjustment of a projection length of a cutting edge while holding the plate member in a stable manner, thereby suppressing chatter vibration and improving the quality of a finished surface.