Adjacent-Station Tool Holder for Deep Turret Grooving
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Solution Overview
Problem
Current CNC-lathe turrets are limited in grooving depth and prone to vibrations during cutting, with a risk of collision due to the design of existing parting and grooving tools.
Innovation Solution
A tool holder and parting and grooving tool system for an indexable turret with a mounting portion and projected portion, where the parting and grooving tool is mounted to allow a greater grooving depth, reduced vibration risk, and minimized extension from the turret axis, featuring a cutting edge with chip breaking means and a clamping portion for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the parting and grooving tool extends further from the turret axis to achieve greater grooving depth, then the grooving depth is improved, but the risk of collision increases
Solution Approach 1:
The tool holder utilizes the radial dimension by mounting the parting and grooving tool on an adjacent tool station rather than extending axially from the active tool station. This dimensional shift allows the cutting edge to reach greater depths while maintaining a compact axial profile that avoids collision with the workpiece.
Solution Approach 2:
The parting and grooving tool is nested within the structure of the tool holder, with the cutting portion positioned to extend downward while the clamping portion is secured within the recess of the projected portion. This nested arrangement maximizes grooving depth while minimizing the overall tool profile.
2Length of moving object
If the parting and grooving tool is designed for greater grooving depth, then the grooving depth capability is improved, but vibrations during cutting increase
Solution Approach 1:
The mounting portion and projected portion are permanently or detachably connected to form an integrated tool holder structure. This merging provides structural rigidity and stability, reducing vibrations during deep grooving operations while maintaining the extended cutting capability.
Solution Approach 2:
The tool holder design incorporates optimized geometric forms in the mounting portion and projected portion connection to enhance structural stiffness and reduce vibration during cutting operations at greater depths.
3Object-affected harmful factors
If the parting and grooving tool is designed to extend minimally from the turret axis to reduce collision risk, then collision risk is reduced, but the grooving depth capability is limited
Solution Approach 1:
The solution transitions from axial extension to radial utilization by mounting the tool on an adjacent station, achieving deep grooving capability without increasing the axial profile that would cause collision.
Solution Approach 2:
The tool holder is segmented into a mounting portion for turret attachment and a projected portion for tool holding, with the cutting edge positioned to extend downward from the projected portion. This segmentation allows independent optimization of the mounting base for stability and the cutting portion for depth capability.
4Ease of manufacture
If a traditional direct mounting of the parting and grooving tool to the active tool station is used, then the setup is simple, but the grooving depth is limited
Solution Approach 1:
The tool holder with its mounting portion and projected portion serves multiple functions: it provides a standardized interface for turret mounting, enables deep grooving through the projected portion configuration, and maintains ease of setup through permanent or detachable connection options. This universal design replaces the limited direct mounting approach.
Data Source
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AI summary
A tool holder (1) and a parting and grooving tool (2) for an indexable turret (11) having a plurality of tool stations (4), where adjacent tool stations (4) having a predetermined angular spacing (α), the tool holder (1) comprising: a mounting portion (5) and a projected portion (6), wherein the mounting portion (5) comprises a flat surface (7) extending in an interface plane (P1), wherein the projected portion (6) comprises a recess (13) for holding the parting and grooving tool (2), wherein the projected portion (6) and the mounting portion (5) is connected, wherein the parting and grooving tool (2) comprising: a cutting portion (8) and a clamping portion (9), wherein the cutting portion (9) comprises a cutting edge (10), wherein the clamping portion comprises a rear end surface (14), wherein the parting and grooving tool (2) is mountable in the recess (13) such that a distance (15) from the interface plane (P1) to the rear end surface (14) of the parting and grooving tool (2) is greater than a distance (16) from the interface plane (P1) to the cutting portion (8) of the parting and grooving tool (2).