Automatic tool truing for an led lens cavity lapping system

Fusaomi Nagata, Takanori Mizobuchi, Keigo Watanabe, Maki K. Habib, Tetsuo Hase, Zenku Haga, Masaaki Omoto

Research output: Contribution to journalArticle

Abstract

A computer-controlled desktop machine tool with an automatic truing function of a wood-stick tool is described for the long-time lapping process of an LED lens cavity. We have experimentally found that a thin wood stick with a ball-end tip is very suitable for the lapping tool of an LED lens cavity. When the lapping is conducted by a skilled worker, a special oil including minute diamond lapping paste, whose grain size is smaller than 3 μm, is poured into each concave area on the cavity. The wood material tends to compatibly fit both the metallic material of cavity and the diamond lapping paste due to the soft characteristics of wood. The serious problem in using a wood-stick tool is the abrasion of the tool tip. For example, an actual LED lens cavity has 180 concave areas so that the cavity can form small plastic LED lenses with mass production at a time. However, after about five concave areas are finished, the tip of the wood-stick tool is deformed from the initial ball shape. Therefore, to realize a complete automatic lapping system, a novel automatic tool truing is required. The truing of a wood-stick tool means the reshaping to the initial contour, i.e., ballend tip. In this paper, a novel and simple automatic truing method by using cutter location data is proposed and its effectiveness and validity are evaluated through an experiment. The cutter location data is called the CL data, which can be produced from the main processor of 3D CAD/CAM widely used in industrial design fields. The proposed machine tool can easily carry out the truing of a wood-stick tool based on the generally known CL data, which is adistinctive feature of our proposed machine tool.

Original languageEnglish
Pages (from-to)419-431
Number of pages13
JournalInternational Journal of Robotics and Automation
Volume26
Issue number4
DOIs
Publication statusPublished - 2011

Fingerprint

Lapping
Lens
Lenses
Wood
Cavity
Light emitting diodes
Machine Tool
Machine tools
Strombus or kite or diamond
Diamonds
Ball
Industrial Design
CAD/CAM
Grain Size
Computer aided manufacturing
Product design
Abrasion
Plastics
Computer aided design
Tend

Keywords

  • Automatic truing
  • Cutter location data
  • Force sensor
  • Lapping process
  • LED lens cavity
  • Multi-control modes

ASJC Scopus subject areas

  • Software
  • Electrical and Electronic Engineering
  • Modelling and Simulation
  • Control and Systems Engineering
  • Mechanical Engineering
  • Artificial Intelligence

Cite this

Automatic tool truing for an led lens cavity lapping system. / Nagata, Fusaomi; Mizobuchi, Takanori; Watanabe, Keigo; Habib, Maki K.; Hase, Tetsuo; Haga, Zenku; Omoto, Masaaki.

In: International Journal of Robotics and Automation, Vol. 26, No. 4, 2011, p. 419-431.

Research output: Contribution to journalArticle

Nagata, Fusaomi ; Mizobuchi, Takanori ; Watanabe, Keigo ; Habib, Maki K. ; Hase, Tetsuo ; Haga, Zenku ; Omoto, Masaaki. / Automatic tool truing for an led lens cavity lapping system. In: International Journal of Robotics and Automation. 2011 ; Vol. 26, No. 4. pp. 419-431.
@article{1ff2f679be674b2899bac0a606b90dd9,
title = "Automatic tool truing for an led lens cavity lapping system",
abstract = "A computer-controlled desktop machine tool with an automatic truing function of a wood-stick tool is described for the long-time lapping process of an LED lens cavity. We have experimentally found that a thin wood stick with a ball-end tip is very suitable for the lapping tool of an LED lens cavity. When the lapping is conducted by a skilled worker, a special oil including minute diamond lapping paste, whose grain size is smaller than 3 μm, is poured into each concave area on the cavity. The wood material tends to compatibly fit both the metallic material of cavity and the diamond lapping paste due to the soft characteristics of wood. The serious problem in using a wood-stick tool is the abrasion of the tool tip. For example, an actual LED lens cavity has 180 concave areas so that the cavity can form small plastic LED lenses with mass production at a time. However, after about five concave areas are finished, the tip of the wood-stick tool is deformed from the initial ball shape. Therefore, to realize a complete automatic lapping system, a novel automatic tool truing is required. The truing of a wood-stick tool means the reshaping to the initial contour, i.e., ballend tip. In this paper, a novel and simple automatic truing method by using cutter location data is proposed and its effectiveness and validity are evaluated through an experiment. The cutter location data is called the CL data, which can be produced from the main processor of 3D CAD/CAM widely used in industrial design fields. The proposed machine tool can easily carry out the truing of a wood-stick tool based on the generally known CL data, which is adistinctive feature of our proposed machine tool.",
keywords = "Automatic truing, Cutter location data, Force sensor, Lapping process, LED lens cavity, Multi-control modes",
author = "Fusaomi Nagata and Takanori Mizobuchi and Keigo Watanabe and Habib, {Maki K.} and Tetsuo Hase and Zenku Haga and Masaaki Omoto",
year = "2011",
doi = "10.2316/Journal.206.2011.4.206-3515",
language = "English",
volume = "26",
pages = "419--431",
journal = "International Journal of Robotics and Automation",
issn = "0826-8185",
publisher = "ACTA Press",
number = "4",

}

TY - JOUR

T1 - Automatic tool truing for an led lens cavity lapping system

AU - Nagata, Fusaomi

AU - Mizobuchi, Takanori

AU - Watanabe, Keigo

AU - Habib, Maki K.

AU - Hase, Tetsuo

AU - Haga, Zenku

AU - Omoto, Masaaki

PY - 2011

Y1 - 2011

N2 - A computer-controlled desktop machine tool with an automatic truing function of a wood-stick tool is described for the long-time lapping process of an LED lens cavity. We have experimentally found that a thin wood stick with a ball-end tip is very suitable for the lapping tool of an LED lens cavity. When the lapping is conducted by a skilled worker, a special oil including minute diamond lapping paste, whose grain size is smaller than 3 μm, is poured into each concave area on the cavity. The wood material tends to compatibly fit both the metallic material of cavity and the diamond lapping paste due to the soft characteristics of wood. The serious problem in using a wood-stick tool is the abrasion of the tool tip. For example, an actual LED lens cavity has 180 concave areas so that the cavity can form small plastic LED lenses with mass production at a time. However, after about five concave areas are finished, the tip of the wood-stick tool is deformed from the initial ball shape. Therefore, to realize a complete automatic lapping system, a novel automatic tool truing is required. The truing of a wood-stick tool means the reshaping to the initial contour, i.e., ballend tip. In this paper, a novel and simple automatic truing method by using cutter location data is proposed and its effectiveness and validity are evaluated through an experiment. The cutter location data is called the CL data, which can be produced from the main processor of 3D CAD/CAM widely used in industrial design fields. The proposed machine tool can easily carry out the truing of a wood-stick tool based on the generally known CL data, which is adistinctive feature of our proposed machine tool.

AB - A computer-controlled desktop machine tool with an automatic truing function of a wood-stick tool is described for the long-time lapping process of an LED lens cavity. We have experimentally found that a thin wood stick with a ball-end tip is very suitable for the lapping tool of an LED lens cavity. When the lapping is conducted by a skilled worker, a special oil including minute diamond lapping paste, whose grain size is smaller than 3 μm, is poured into each concave area on the cavity. The wood material tends to compatibly fit both the metallic material of cavity and the diamond lapping paste due to the soft characteristics of wood. The serious problem in using a wood-stick tool is the abrasion of the tool tip. For example, an actual LED lens cavity has 180 concave areas so that the cavity can form small plastic LED lenses with mass production at a time. However, after about five concave areas are finished, the tip of the wood-stick tool is deformed from the initial ball shape. Therefore, to realize a complete automatic lapping system, a novel automatic tool truing is required. The truing of a wood-stick tool means the reshaping to the initial contour, i.e., ballend tip. In this paper, a novel and simple automatic truing method by using cutter location data is proposed and its effectiveness and validity are evaluated through an experiment. The cutter location data is called the CL data, which can be produced from the main processor of 3D CAD/CAM widely used in industrial design fields. The proposed machine tool can easily carry out the truing of a wood-stick tool based on the generally known CL data, which is adistinctive feature of our proposed machine tool.

KW - Automatic truing

KW - Cutter location data

KW - Force sensor

KW - Lapping process

KW - LED lens cavity

KW - Multi-control modes

UR - http://www.scopus.com/inward/record.url?scp=84255170641&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84255170641&partnerID=8YFLogxK

U2 - 10.2316/Journal.206.2011.4.206-3515

DO - 10.2316/Journal.206.2011.4.206-3515

M3 - Article

VL - 26

SP - 419

EP - 431

JO - International Journal of Robotics and Automation

JF - International Journal of Robotics and Automation

SN - 0826-8185

IS - 4

ER -