Grooving Insert Holder Hinge Cooling for Stronger Clamping
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Solution Overview
Problem
Existing external grooving insert holders face limitations in directing coolant effectively to the cutting zone, particularly due to restricted coolant channel dimensions through the hinge portion, which affects clamping force and tool performance.
Innovation Solution
An elongated insert holder design with a coolant channel extending through an angled hinge portion, featuring a clamping finger and support rib, and a coolant outlet on the clamping finger to direct coolant towards the cutting zone from above, allowing for improved coolant distribution without enlarging the hinge portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the coolant channel extends through the hinge portion, then coolant can be delivered to the cutting zone, but the cross-sectional dimension of the coolant channel is limited by the thickness of the hinge portion
Solution Approach 1:
The coolant outlet is positioned on the clamping finger surface rather than extending through the hinge portion, utilizing the surface dimension of the clamping finger to deliver coolant. This dimensional shift allows adequate coolant flow cross-section without being constrained by the limited thickness of the hinge portion.
Solution Approach 2:
The coolant delivery system is segmented into separate components: the coolant channel in the holder body and the clamping finger with its own outlet. This segmentation allows the coolant channel to be optimally sized in the holder while the clamping finger provides an additional coolant delivery path, resolving the space constraint issue.
2Force
If additional elements such as screws are used to increase clamping forces, then clamping force on the cutting insert is improved, but the structure becomes more complex
Solution Approach 1:
The upper jaw is designed as a resilient component that automatically applies clamping force to the cutting insert through its elastic deformation when positioned between the lower jaw and the insert. This self-service mechanism eliminates the need for additional clamping elements like screws, achieving both high clamping force and structural simplicity.
Solution Approach 2:
The resilient upper jaw utilizes material property changes (elasticity) to generate clamping force. By selecting appropriate material parameters and jaw geometry, sufficient clamping force is achieved without mechanical fasteners, simplifying the overall structure while maintaining strong insert retention.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances coolant delivery to the cutting zone, improving clamping forces and tool performance by maintaining a compact design and extending the lifespan of the cutting tool.
Implementation Method 1
upper and lower jaws which are spaced apart by a clamping recess recessed in the holder end surface, the upper jaw being resiliently movable with respect to the lower jaw upon rotation around an angled pivot axis
Implementation Method 2
a coolant channel extending from the lower jaw to the upper jaw through the angled hinge portion
Implementation Method 3
a coolant outlet on the clamping finger to direct coolant towards the cutting zone from above
Data Source
AI summary
An insert holder has a holder longitudinal axis defining opposite forward to rearward directions, a holder end surface located at a forward end thereof, and a holder peripheral surface extending circumferentially about the holder longitudinal axis. The insert holder has upper and lower jaws which are spaced apart by a clamping recess recessed in the holder end surface. The upper jaw is resiliently movable with respect to the lower jaw upon rotation around an angled pivot axis. The insert holder includes a forwardly located insert mounting portion which includes a forwardly protruding clamping finger and a forwardly protruding support rib. The clamping recess is defined partially by an elongated recess hinge surface formed on an angled hinge portion. The recess hinge surface includes a first hinge end and a second hinge end, longitudinally spaced apart from one another. The second hinge end is located forward of the first hinge end.