Cutting Insert Lateral Clamping for Milling Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting inserts for milling cutters often experience loosening during operation due to the design of the clamping element, which can lead to inadequate fixation and potential deformation, affecting the milling behavior and quality.
Innovation Solution
A cutting insert design featuring a lateral surface with clamping sections that redirect force distribution, allowing for secure attachment via a clamping element that engages over the lateral surface, rather than the main surface, minimizing the risk of loosening and deformation, and incorporating a stop surface and seating surfaces for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamping element extends through the main surface of the cutting insert, then the cutting insert can be fixed on the tool body, but the clamping element may loosen during operation
Solution Approach 1:
The clamping element is redirected to act on the lateral surface of the cutting insert instead of the main surface, changing the dimension of clamping action from axial to radial. This dimensional change allows the clamping force to be applied perpendicular to the direction of rotation, improving stability and preventing loosening during operation.
Solution Approach 2:
Instead of clamping the cutting insert from the main surface (conventional approach), the invention inverts the clamping direction to act on the lateral surface. This inversion changes the force application point and direction, creating a more stable clamping configuration that resists loosening during milling operations.
2Manufacturing precision
If the clamping element extends perpendicularly to the axis of rotation, then the cutting insert can be clamped uniformly, but the clamping element may deform during operation
Solution Approach 1:
The clamping force is applied in a different dimension (radially on the lateral surface) rather than axially through the main surface. This dimensional change reduces the bending moments and deformation stresses on the clamping element while maintaining uniform clamping pressure across the cutting insert contact surface.
3Ease of operation
If the clamping element is positioned centrally on the second main surface, then the cutting insert can be rotated easily, but the clamping element may loosen during operation
Solution Approach 1:
The clamping action is moved from the main surface (where rotation occurs) to the lateral surface, separating the rotation function from the clamping function. This allows the cutting insert to rotate freely on the main surface while the lateral surface provides stable clamping that prevents loosening during operation.
Data Source
AI summary
A cutting insert (20) for a milling cutter (10) is described, wherein the cutting insert (20) comprises a first main surface (22) for abutment against a stop surface (24) oriented substantially perpendicular to the direction of rotation of the milling cutter (10), a second main surface (26) which is opposite to the first main surface (22), which comprises the cutting surface, and a lateral surface (28) which connects the first main surface (22) with the second main surface (26) and which comprises the free surface. The lateral surface (28) has at least one clamping section (38) by which the cutting insert (20) is clamped in a recess (18) in a tool body (12) by means of a clamping element (40), in particular wherein the cutting insert (20) is a turning cutting insert. Furthermore, a milling cutter (10) is described.