Clamping Holder Stop Structure for Precise Cutting Insert Positioning

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Solution Overview

Problem

Existing machine tools face challenges in accurately positioning cutting bodies within recesses, leading to inaccurate positioning and complex manufacturing processes.

Innovation Solution

A machine tool design featuring a clamping holder with a recess that includes a stop bolt or pin for secure positioning of the cutting body, allowing for precise transverse positioning and integration of a clamping claw for stable clamping, utilizing additive manufacturing and a tapered recess for rotational security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a continuous recess is used to hold the cutting body, then the cutting body can be easily inserted and removed, but the positioning accuracy of the cutting body in the transverse direction deteriorates

Engineering Contradiction:

Improveease of insertion and removal of cutting bodyVSAvoidpositioning accuracy of cutting body

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The continuous recess is segmented by introducing a stop structure that divides the recess into a positioning region and a clamping region. The stop creates a discontinuity that provides a reference surface for accurate positioning while maintaining the overall continuous structure for easy insertion and removal.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A stop structure acts as an intermediary element between the cutting body and the clamping holder. This stop provides a precise positioning reference surface that mediates the interaction between the cutting body and the holder, ensuring accurate transverse positioning while allowing the continuous recess to maintain its ease of operation benefits.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If bearing surfaces are formed at acute angles to secure the cutting body, then positioning accuracy improves, but the manufacturing complexity increases

Engineering Contradiction:

Improvepositioning accuracy of cutting bodyVSAvoidcomplexity of recess structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The stop structure introduces asymmetry into the otherwise symmetric continuous recess. By positioning the stop at a specific location within the recess, it creates an asymmetric reference surface that provides accurate positioning without requiring complex angled bearing surfaces throughout the entire recess structure.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

Instead of forming bearing surfaces at acute angles throughout the entire recess, the stop structure provides localized precision positioning at a specific point within the continuous recess. This local quality approach maintains the simplicity of the overall continuous recess structure while achieving accurate positioning where needed.

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If multiple screw connections are used to secure the cutting body, then clamping stability improves, but the device complexity and manufacturing time increase

Engineering Contradiction:

Improveclamping stability of cutting bodyVSAvoidnumber of screw connections

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The stop structure merges the positioning function and the clamping reference function into a single integrated element. By combining these functions into one stop structure rather than using separate positioning features and clamping features, the design reduces the number of screw connections needed while maintaining clamping stability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The stop structure serves multiple functions: it provides a positioning reference surface for accurate transverse positioning, defines the clamping zone by creating a discontinuity in the recess, and works with the clamping jaws to secure the cutting body. This multi-functionality reduces the need for multiple separate components and screw connections.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables positionally accurate and stable clamping of cutting bodies, reducing manufacturing complexity and ensuring secure, precise positioning without the need for additional screw connections.

Implementation Method 1

a slot, which extends from the base of the recess along the longitudinal axis and which divides the end of the base body on the front side of the tool into two elastically deformable tensioning portions

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS12179273B2Machine tool

Publication Date: 2024.12.31 GUEHRING KG

AI summary

The invention relates to a machine tool (1) comprising a clamping holder (10) which extends along a longitudinal axis (3) and a cutting element (20) that can be inserted into an open tool-side recess (40), which passes through the clamping holder (10), transversely to the longitudinal axis (3). The machine tool (1) has a stop (30) which is secured in the recess (40) and against which the cutting element (20) rests in the direction transverse to the longitudinal axis (3).