Elastic Clamping Arm Toolholder for Parting and Grooving
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Solution Overview
Problem
Conventional parting and grooving tools with clamping arrangements are complex and difficult to position, making the task of indexing or replacing inserts in a toolholder challenging due to the intricacy of tools used to open and clamp inserts in the toolholder pockets.
Innovation Solution
A toolholder design featuring a shank with a main body and an elastic clamping arm, where a screw with threaded holes interacts with the clamping arm to apply additional clamping force, allowing for easier insertion and removal of inserts by utilizing a thinner clamping arm that can be easily bent, and a second arm that resists screw advancement to distribute force, simplifying the clamping mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clamping tool is used to open and clamp inserts in the toolholder pocket, then the insert can be securely retained, but the tool structure becomes complex and difficult to position
Solution Approach 1:
The clamping mechanism is segmented into two functional parts: a resilient arm that provides the clamping force and a screw mechanism that applies the clamping load. This segmentation allows the resilient arm to be simple and easy to position while still providing secure insert retention through the combined action of both components.
2Ease of operation
If a thin clamping arm is used to facilitate easy bending and insert insertion, then the ease of operation improves, but the clamping force may be insufficient
Solution Approach 1:
The clamping arm is designed as a resilient (dynamic) component that can elastically deform during insert insertion and then maintain clamping force. The arm's resilience allows it to be thin and easy to bend for insert insertion while still providing sufficient clamping force through elastic recovery when the screw applies load.
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 design simplifies the clamping process, reduces the complexity of insert positioning, and allows for efficient clamping and release of inserts, facilitating easier maintenance and adaptation to different shank options while maintaining secure insert retention.
Implementation Method 1
an elastic clamping arm 27... The clamping arm 27 has a limited elasticity, or is at least more easily bent than the thicker main body portion 25 and the second arm 43
Implementation Method 2
A threaded hole 47 extends through the second arm 43 to the slot 45. The toolholder 21 further comprises a screw 49 having threads that mate with threads in the threaded hole 47 so that an end of the screw is movable into an out of contact with the clamping arm 27
Data Source
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AI summary
A parting and grooving tool comprising a toolholder (21) and a cutting insert (31), the toolholder comprising a toolholder body (23) including a main body portion (25) and an elastic clamping arm (27), the main body portion (25) and the clamping arm (27) defining an insert-receiving pocket (29), the pocket (29) having a top surface (33) formed by the clamping arm (27) and a bottom surface formed by the main body portion (25) for contacting a top and a bottom surface of a cutting insert (31). The toolholder body (23) comprises a second arm (43), the second arm (43) and the clamping arm (27) defining a slot (45), a threaded hole (47) extending through the second arm (43) to the slot (45), the toolholder (21) comprising a screw (49) having threads that mate with threads in the threaded hole (47) so that the clamping arm (27) is movable into and out of contact with the top surface (37) of the insert. A parting and grooving tool is also disclosed.