Tool Holder Clamping Mechanism for Insert Extension
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Solution Overview
Problem
Existing tool holders for metal cutting processes, particularly in parting and grooving operations, face limitations such as requiring multiple clamping screws for tightening, limited flexibility in clamping configuration, and restricted access for clamping due to the need for top approach and short clamping sections, which hinder efficient clamping and operation.
Innovation Solution
A tool holder design featuring a main block with a longitudinal groove and two wedge-shaped clamping members supported by the lower wall, operated by a single adjustment member that moves along non-parallel ramping surfaces to adjust the clamping force, allowing for efficient clamping and release of a blade-shaped insert holder with improved flexibility and access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple clamping screws are used to clamp the insert holder, then the clamping force is sufficient, but the device complexity and ease of operation deteriorate due to requiring multiple screwing operations
Solution Approach 1:
Multiple clamping screws are merged into a single adjustment member that simultaneously controls both clamping members. The adjustment member with opposite-handed threads integrates the function of multiple screws into one component, reducing device complexity while maintaining sufficient clamping force through the wedge mechanism.
Solution Approach 2:
The clamping system is segmented into two independent wedge-shaped clamping members that can be controlled by a single adjustment member. This segmentation allows each clamping member to independently apply force to the insert holder from opposite sides, achieving balanced clamping with reduced complexity.
2Force
If multiple clamping screws are used, then the clamping force is sufficient, but the ease of operation worsens due to requiring approach from the top to tighten screws
Solution Approach 1:
The clamping mechanism is inverted from the conventional top-approach screw system to a side-approach wedge system. The adjustment member accesses the clamping members from the side through the longitudinal groove, allowing tightening operations without requiring top approach, thereby improving ease of operation while maintaining clamping force.
3Ease of operation
If a single wedge shaped clamping member is used, then the ease of operation improves, but the adaptability worsens due to limited flexibility in clamping configuration
Solution Approach 1:
The single clamping member is segmented into two wedge-shaped clamping members positioned at opposite sides of the longitudinal groove. This segmentation provides flexibility in clamping configuration by allowing the insert holder to be clamped from multiple directions, improving adaptability while each member remains simple to operate.
Solution Approach 2:
The two clamping members are positioned asymmetrically at opposite ends of the longitudinal groove, allowing the insert holder to be clamped from either end of the main block. This asymmetric arrangement provides flexibility in clamping configuration and adapts to different insert holder positions while maintaining ease of operation through the single adjustment member.
4Ease of operation
If clamping is provided along a short section of the longitudinal groove, then the ease of operation improves with single adjustment member, but the length of stationary object worsens due to limited extension distance
Solution Approach 1:
The clamping function is segmented into two separate clamping members positioned at different locations along the longitudinal groove. This segmentation allows the cutting insert to extend beyond the main block at either end, increasing the effective length and extension distance while each clamping member remains simple to operate through the single adjustment member.
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
The solution provides a more efficient and flexible clamping mechanism that reduces the need for multiple screws, allows for clamping from either end, and increases the distance the cutting insert can extend, enhancing the performance in parting and grooving operations while maintaining high clamping force and wear resistance.
Implementation Method 1
a single adjustment member operatively connected to each of the two clamping members... rotating the adjustment member to cause movement of each clamping member up a respective inclined non-parallel planar ramping surface
Implementation Method 2
two wedge shaped clamping members... configured to travel along the ramping surface and thereby adjust a distance between the clamping surfaces and the lower wall
Data Source
AI summary
A tool holder for clamping an insert holder has a main block, two clamping members and a single adjustment member. The main block has a longitudinal side surface with a longitudinal groove with upper and lower walls. The two clamping members include mirror symmetrical left and right clamping members interfacing with two inclined non-parallel planar ramping surfaces of the lower wall of the longitudinal groove. A blade-shaped insert holder is mounted in the longitudinal groove on the two clamping members. The adjustment member interfaces with the two clamping members, and when rotated causes each clamping member to move up its respective non-parallel planar ramping surface, decreasing the distance between the two clamping members and the upper wall of the longitudinal groove until a clamping force is uniformly applied between the insert holder and the upper wall of the longitudinal groove.