Annular Cutting Blade Mounting With Suction Alignment

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Solution Overview

Problem

The existing methods for mounting cutting blades in cutting apparatuses often result in eccentricity due to the weight of the blade, leading to vibrations during high-speed rotation, causing chipping and requiring time-consuming perfect circle dressing and setting dressing procedures to correct the edge.

Innovation Solution

A cutting blade mounting method that sandwiches both side surfaces of the annular cutting blade between a first and second flange, using suction holes to hold and fix the blade at a perfect circle position, ensuring the center aligns with the spindle axis, preventing eccentricity and maintaining the perfect circle position during mounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cutting blade is mounted using conventional methods, then the blade can be attached to the spindle, but the blade becomes eccentric due to its own weight, causing vibration and requiring time-consuming dressing procedures

Engineering Contradiction:
Improveblade mounting speedVSAvoidblade center alignment
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The suction holes are activated before the blade is fully mounted to preliminarily hold the blade in the correct position. This preliminary action prevents the blade from becoming eccentric due to gravity during the mounting process, eliminating the need for subsequent perfect circle dressing while maintaining precise center alignment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The suction force acts as an intermediary mechanism between the mounting system and the blade. By applying suction through the suction holes, the system can precisely control the blade's position during mounting, ensuring the blade center coincides with the spindle axis without requiring complex mechanical alignment mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If perfect circle dressing is performed to correct blade eccentricity, then the blade center alignment is improved, but the blade edge is crushed and additional setting dressing is required

Engineering Contradiction:
Improveblade center alignmentVSAvoidblade edge integrity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The suction force applies a counteracting force to gravity before the blade can become eccentric. By holding the blade in the correct position during mounting, the system prevents the development of eccentricity that would otherwise require corrective dressing, thereby preserving the blade edge integrity and eliminating the need for both perfect circle dressing and setting dressing.

Inventive Principle:
Principle #9Preliminary anti-action

3Device complexity

If the cutting blade is held without suction during mounting, then the mounting process is simpler, but the blade becomes eccentric due to gravity

Engineering Contradiction:
Improvemounting process complexityVSAvoidblade center alignment
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The mounting system uses pneumatic suction through the suction holes to hold the blade during mounting. This pneumatic mechanism provides a simple yet effective means of maintaining precise blade center alignment without complex mechanical positioning devices, achieving both simplicity and precision in the mounting process.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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

This method allows for efficient mounting of a new cutting blade in a perfect circle state, reducing the time needed before cutting processing can begin and improving processing efficiency by eliminating the need for subsequent perfect circle dressing and setting dressing.

Implementation Method 1

a suction hole sucking and holding a side surface of the cutting blade to the sandwiching surface

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS10759088B2Cutting blade mounting method
Publication Date: 2020.09.01 DISCO CORP
  • US10759088B2 patent drawing
  • US10759088B2 patent drawing
  • US10759088B2 patent drawing

AI summary

A cutting blade mounting method of sandwiching both side surfaces of an annular cutting blade by a first flange and a second flange, the first flange being mounted on an end of a spindle and having a suction hole sucking and holding a side surface of the cutting blade to a sandwiching surface of the first flange, includes: a cutting blade provisional holding step of sucking and holding the cutting blade to the first flange by making the cutting blade abut against the sandwiching surface of the first flange at a perfect circle position at which a center of the cutting blade coincides with an axis of the spindle, and making a suction force act on the suction hole; and a fixing step of fixing the cutting blade maintaining the perfect circle position in the cutting blade provisional holding step to the first flange by the second flange.