Elastic Cutting Insert Holder With Reinforced Rear Stop Surface
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Solution Overview
Problem
Existing clamp holders for cutting inserts are prone to deformation due to heat and mechanical stress during the piercing process, leading to tool failure and insecure retention of the cutting insert.
Innovation Solution
Incorporation of a reinforcement element, such as a bolt made of hard metal, ceramic, or CBN, fixed into the rear stop surface to stabilize the clamp holder and counteract deformation, combined with an elastic upper clamping arm design for secure clamping and easy insertion/removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the rear stop surface is heavily loaded during the piercing process, then the clamping force is improved, but the stop surface deforms due to heat and mechanical action leading to tool failure
Solution Approach 1:
The patent applies local quality by introducing reinforcement elements (bolts) made of hard materials (hard metal, ceramic, CBN) specifically at the rear stop surface area that experiences heavy loading. This localized reinforcement strengthens only the critical region without requiring to strengthen the entire tool holder, thereby maintaining high clamping force while preventing deformation and tool failure at the stop surface.
Solution Approach 2:
The patent employs composite materials by combining the base tool holder material with reinforcement elements made of different materials (hard metal, ceramic, or CBN). This composite structure allows the rear stop surface to withstand heavy mechanical loads and thermal effects during piercing operations without deforming, thus improving reliability while maintaining the necessary clamping force.
2Ease of operation
If the upper clamping jaw is made elastically spreadable for easy insertion and removal, then the ease of operation is improved, but the security of retention of the cutting insert deteriorates
Solution Approach 1:
The patent applies dynamics by designing the upper clamping jaw to be elastically spreadable. The jaw can be dynamically moved between a closed clamping position (for secure retention during machining) and an open position (for easy insertion and removal of cutting inserts). The elastic property allows the jaw to flex during opening/closing operations while maintaining firm clamping force during the machining process, thus resolving the contradiction between ease of operation and security of retention.
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 reinforcement element effectively prevents deformation and ensures secure retention of the cutting insert, enhancing the durability and reliability of the clamp holder during machining processes.
Implementation Method 1
the rear stop surface is heavily loaded during the piercing process, which as a result of the heat generated and the mechanical action can lead to deformation
Implementation Method 2
The upper clamping jaw is elastically spreadable
Implementation Method 3
an upper clamping jaw (12) opposite this and a rear stop surface (13), with a slot (16) adjoining the rear area of the receiving opening next to the rear stop surface, so that the upper jaw (12) can be spread apart relative to the lower jaw (11)
Data Source
Figure 1
AI summary
The invention relates to a clamping holder (10) with a receiving opening for the releasable clamping of a cutting insert, which is defined by a lower clamping jaw (11), an upper clamping jaw (12) opposite it, and a rear stop surface (13), wherein a slot (16) adjoins the rear of the receiving opening next to the rear stop surface (13), so that the upper clamping jaw (12) can be spread apart relative to the lower clamping jaw (11). According to the invention, the rear stop surface (13) has at least one reinforcing element (25).