Blade-Shaped Cutting Tool Insert Holder V-Groove Clamping
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Solution Overview
Problem
Existing cutting tools for grooving and turning operations face challenges in efficient manufacturing and optimal clamping contact positioning, leading to difficult machining operations and large distances between clamping contact locations, which affect tool performance and efficiency.
Innovation Solution
A cutting tool design featuring a blade-shaped insert holder with V-shaped upper and lower receiving slot surfaces and a cutting insert with mirror symmetry, allowing for self-clamping and efficient manufacturing, with optimized clamping contact zones and reduced distance between contact points, utilizing carbide powder for the insert and a harder material for the holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V-shaped male parts with ridges and V-shaped female parts with flutes are used to provide clamping contact, then transverse forces can be absorbed through the narrower acute angled surfaces, but the insert holder requires difficult and time-consuming machining operations
Solution Approach 1:
The clamping mechanism is segmented into discrete clamping elements (jaws) that can be independently positioned and configured. Each jaw has separate clamping surfaces and guiding surfaces, allowing the functions of force absorption and alignment to be distributed across multiple simplified components rather than requiring complex machined ridges and flutes.
Solution Approach 2:
Instead of creating complex V-shaped ridges and flutes that require precise acute angle machining, the invention inverts the approach by using broader clamping surfaces with obtuse angles that are easier to manufacture, while achieving the same transverse force absorption through the distributed jaw configuration and contact geometry.
2Reliability
If ridges and flutes longitudinally extend between contact surfaces to absorb transverse forces, then transverse stability is improved, but the distance between clamping contact locations becomes undesirably large
Solution Approach 1:
The clamping function is segmented into multiple discrete contact points on each jaw, allowing transverse stability to be achieved through distributed contact rather than requiring a single long ridge-flute interface. This reduces the overall distance between primary clamping locations while maintaining stability.
Solution Approach 2:
The invention transitions from a longitudinal extension of clamping features (ridges and flutes extending along the length) to a more compact arrangement where clamping surfaces are positioned closer together in the longitudinal direction, using the transverse and vertical dimensions to achieve the same stabilizing effect through the jaw geometry and contact surface orientation.
3Reliability
If clamping contact is made at widely spaced locations to ensure stable holding under large loads, then insert retention is improved, but manufacturing complexity and time increase
Solution Approach 1:
The clamping mechanism is divided into multiple independent jaws with simplified geometries, allowing reliable clamping contact at multiple locations without requiring each individual component to be complex. Each jaw can be manufactured separately with simpler features, reducing overall device complexity while maintaining retention reliability.
Solution Approach 2:
The invention changes the geometric parameters of the clamping surfaces from acute angled ridges and flutes to obtuse angled surfaces with different contact geometries. This parameter change allows for adequate clamping contact spacing to ensure stable holding under load while simplifying the manufacturing of each clamping component.
Data Source
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AI summary
A cutting tool used for grooving and turning operations, where a cutting insert is removably securable in a blade-shaped insert holder. The insert holder includes an insert receiving slot having a longitudinally extending upper receiving slot surface with longitudinally separated single pairs of ridge type V-shaped lateral stopping and upper clamping surfaces, the planar surface components of which form different internal angles. The cutting insert includes an upper surface with a single pair of groove type V-shaped upper abutment surfaces longitudinally separated from two pairs of groove type V-shaped lateral abutment surfaces. Clamping contact occurs between the pairs of upper abutment and upper clamping surfaces, and lateral contact only occurs between one surface component of one of the pairs of lateral abutment surfaces and one surface component of the pair of lateral stopping surfaces for cases of a sufficiently large side load on the cutting insert.