Cutting Insert Anti-Slip Groove Structure for Secure Holder Retention
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Solution Overview
Problem
Cutting inserts in non-fixed cutting tools, such as rotary milling cutters, can be dislodged from holder pockets at high speeds, leading to damage and safety hazards due to the failure of mounting mechanisms, necessitating an effective anti-slip arrangement to prevent slipping.
Innovation Solution
The cutting tool features an anti-slip recess in the cutting insert with elongated, straight grooves and an anti-slip rib in the holder pocket, both oriented parallel to each other, allowing for secure retention without the need for a retaining screw, and enabling adjustable positioning to prevent slipping during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mounting mechanism (retaining screw or clamping arm) is used to clamp the cutting insert, then the cutting insert can be securely retained in the holder pocket, but the mounting mechanism may fail and the cutting insert can be dislodged at high speed
Solution Approach 1:
The patent applies preliminary anti-action by incorporating an anti-slip recess with grooves and an anti-slip rib that create friction resistance before any dislodgement can occur. This preventive friction mechanism is designed to counteract the harmful dislodgement forces that could arise from mounting mechanism failure, thereby maintaining retention reliability while eliminating the dislodgement hazard associated with screw or clamping arm failures.
2Reliability
If an anti-slip arrangement with projection and recess is used, then the cutting insert can be prevented from slipping out, but the structure becomes more complex
Solution Approach 1:
The anti-slip recess is segmented into multiple grooves (typically three grooves) within a single recess structure. This segmentation provides multiple friction surfaces that enhance anti-slip effectiveness while containing the complexity within a compact, integrated recess feature rather than requiring multiple separate components or elaborate mechanisms.
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
This configuration effectively prevents the cutting insert from slipping out of the holder pocket, ensuring tool stability and safety by providing a secure, adjustable, and screw-free retention mechanism, suitable for various indexable positions and materials like ceramic inserts.
Implementation Method 1
an anti-slip recess recessed in the insert lower surface, defining a lower anti-slip recess, the lower anti-slip recess comprising at least one elongated and straight anti-slip groove
Data Source
AI summary
A cutting insert includes an insert peripheral surface that includes at least one planar major insert side abutment surface and an insert lower surface that includes an anti-slip recess recessed therein. The anti-slip recess includes at least one elongated and straight anti-slip groove. Each major insert side abutment surface is oriented parallel to a groove longitudinal axis of a respective anti-slip groove. An insert holder includes a holder pocket. The holder pocket includes a pocket peripheral surface which includes planar major pocket side abutment surface and a pocket base surface having an elongated and straight anti-slip rib. When the cutting insert is releasably attached to the insert holder, to constitute a fastened position of a cutting tool, the anti-slip rib is located in the anti-slip groove that is oriented parallel to the major insert side abutment surface that abuts the major pocket side abutment surface.