Boring Holder Tool Radius Adjusting System

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Solution Overview

Problem

Existing boring holders with adjustable tool radii lack an efficient and automated mechanism for precise compensation, often relying on manual adjustments or single-step mechanisms, which can be time-consuming and interrupt machining processes.

Innovation Solution

A tool radius adjusting system with a two-step mechanism, comprising a fine motion adjusting mechanism and a coarse motion adjusting mechanism, controlled by a controller to automatically compensate for tool radius discrepancies, allowing for precise adjustments without interrupting machining operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a one-step adjusting mechanism is used for tool radius compensation, then the device complexity is reduced, but the manufacturing precision and adjustment reliability deteriorate

Engineering Contradiction:
Improveadjusting mechanism complexityVSAvoidtool radius compensation precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The adjusting mechanism is divided into two independent steps: coarse motion adjusting mechanism for large-range adjustments and fine motion adjusting mechanism for precise compensation. This segmentation allows each mechanism to be optimized for its specific function, achieving both ease of operation and high precision without requiring an overly complex integrated system.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If manual adjustment of tool radius is performed, then the device complexity is reduced, but the productivity and time efficiency deteriorate

Engineering Contradiction:
Improveadjusting system complexityVSAvoidmachining process efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system incorporates a tool radius measuring device that automatically measures the actual tool radius and feeds this information to the controller. The controller then automatically calculates the compensation amount and operates the adjusting mechanisms without manual intervention, enabling the system to self-adjust and eliminating time-consuming manual operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The measuring device provides real-time feedback on the actual tool radius to the controller, which uses this feedback to determine the appropriate compensation amount. This closed-loop feedback system ensures accurate automatic adjustment and allows the machining process to continue without interruption, significantly improving productivity.

Inventive Principle:
Principle #23Feedback

3Productivity

If automatic tool radius adjustment is implemented, then the productivity is improved, but the device complexity increases

Engineering Contradiction:
Improvetool radius adjustment efficiencyVSAvoidadjusting system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automatic adjusting system is segmented into distinct functional modules: measuring device for detection, controller for calculation and decision-making, coarse motion mechanism for large adjustments, and fine motion mechanism for precise compensation. This modular segmentation makes the complex automatic system more manageable and easier to implement while maintaining high productivity.

Inventive Principle:
Principle #1Segmentation

4Measurement precision

If the tool radius adjustment interrupts the machining process, then the measurement precision is improved, but the productivity deteriorates

Engineering Contradiction:
Improvetool radius measurement accuracyVSAvoidoverall machining time
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The measuring device is positioned and configured to measure the tool radius before the machining operation begins. The controller uses this pre-measured data to calculate the compensation amount and perform all necessary adjustments in advance, allowing the machining process to proceed without interruption and maintaining both measurement precision and productivity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8881354B2Tool radius adjusting system for boring holder, tool radius adjusting method in machine tool, and machine tool
Publication Date: 2014.11.11 JTEKT CORP
  • US8881354B2 patent drawing
  • US8881354B2 patent drawing
  • US8881354B2 patent drawing

AI summary

A boring holder in a tool radius adjusting system is provided with a cutting blade and fine and coarse motion adjusting mechanisms each capable of adjusting the position of the cutting blade relative to a rotational axis of the boring holder. The tool radius adjusting system is provided with a tool radius measuring device for measuring the tool radius of the boring holder and a controller configured to calculate a compensation amount based on a tool radius measured by the tool radius measuring device and a target tool radius and to operate the fine and coarse motion adjusting mechanisms based on the compensation amount so that the tool radius is brought into agreement with the target tool radius.