Tolerance analysis in assembly of mechanics for electronics

Juhani Heilala, Otso Väätäinen, Timo Salmi, Paavo Voho

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Assembly is more than putting parts together; it can be seen as a product and a process. In this article, the focus is on assembly modelling, product level dimensional variation analysis and automated assembly process tolerance analysis. Dimensioning philosophy and the choice of tolerances is a function of design, which affects not only the product 's function and performance but also its manufacture and assembly. Tolerances constrain affect ease and the sequence of assembly, determining the specifications of assembly technology such as jigs and fixtures, assembly machines, robots, and grippers. In robotic assembly, the different schemes for accomplishing a task may have different success rates depending on what mechanical accuracy or force levels are involved or how sensitive the technique is to small errors in how the parts were made. Parts, fixtures and other equipment vary in size and position. These variations can mean that the robot will assemble one set of parts perfectly, yet will create assembly error with another set. To ensure that parts are loaded and assembled reliably, without misfits, a tolerance study must be done. The authors shall review the importance of tolerance analysis in assembly, product and process development. Different tolerance analysis methods and types of tools exist and are shown in the paper. This is an introduction, a current state review of tolerance analysis and a feasibility study of potential method and software to be used in the tolerance analysis for the precise assembly of electromechanical products.
Original languageEnglish
Title of host publicationMechanics for electronics
Subtitle of host publicationVTT Research programme 2000 - 2002
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages7-26
ISBN (Electronic)951-38-5737-9
ISBN (Print)951-38-5736-0
Publication statusPublished - 2002
MoE publication typeB3 Non-refereed article in conference proceedings
EventMechanics for Electronics
: VTT Research Programme 2000–2002
- Espoo, Finland
Duration: 4 Dec 20024 Dec 2002

Publication series

SeriesVTT Symposium
Number223
ISSN0357-9387

Seminar

SeminarMechanics for Electronics
CountryFinland
CityEspoo
Period4/12/024/12/02

Fingerprint

Mechanics
Electronic equipment
Assembly machines
Robots
Robotic assembly
Jigs
Grippers
Specifications

Keywords

  • tolerance analysis methods
  • assembly modelling
  • assembly process and equipment design
  • digital plant technologies

Cite this

Heilala, J., Väätäinen, O., Salmi, T., & Voho, P. (2002). Tolerance analysis in assembly of mechanics for electronics. In Mechanics for electronics: VTT Research programme 2000 - 2002 (pp. 7-26). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 223
Heilala, Juhani ; Väätäinen, Otso ; Salmi, Timo ; Voho, Paavo. / Tolerance analysis in assembly of mechanics for electronics. Mechanics for electronics: VTT Research programme 2000 - 2002. Espoo : VTT Technical Research Centre of Finland, 2002. pp. 7-26 (VTT Symposium; No. 223).
@inproceedings{5052ce86757845c7ad4ad63153405db6,
title = "Tolerance analysis in assembly of mechanics for electronics",
abstract = "Assembly is more than putting parts together; it can be seen as a product and a process. In this article, the focus is on assembly modelling, product level dimensional variation analysis and automated assembly process tolerance analysis. Dimensioning philosophy and the choice of tolerances is a function of design, which affects not only the product 's function and performance but also its manufacture and assembly. Tolerances constrain affect ease and the sequence of assembly, determining the specifications of assembly technology such as jigs and fixtures, assembly machines, robots, and grippers. In robotic assembly, the different schemes for accomplishing a task may have different success rates depending on what mechanical accuracy or force levels are involved or how sensitive the technique is to small errors in how the parts were made. Parts, fixtures and other equipment vary in size and position. These variations can mean that the robot will assemble one set of parts perfectly, yet will create assembly error with another set. To ensure that parts are loaded and assembled reliably, without misfits, a tolerance study must be done. The authors shall review the importance of tolerance analysis in assembly, product and process development. Different tolerance analysis methods and types of tools exist and are shown in the paper. This is an introduction, a current state review of tolerance analysis and a feasibility study of potential method and software to be used in the tolerance analysis for the precise assembly of electromechanical products.",
keywords = "tolerance analysis methods, assembly modelling, assembly process and equipment design, digital plant technologies",
author = "Juhani Heilala and Otso V{\"a}{\"a}t{\"a}inen and Timo Salmi and Paavo Voho",
year = "2002",
language = "English",
isbn = "951-38-5736-0",
series = "VTT Symposium",
publisher = "VTT Technical Research Centre of Finland",
number = "223",
pages = "7--26",
booktitle = "Mechanics for electronics",
address = "Finland",

}

Heilala, J, Väätäinen, O, Salmi, T & Voho, P 2002, Tolerance analysis in assembly of mechanics for electronics. in Mechanics for electronics: VTT Research programme 2000 - 2002. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 223, pp. 7-26, Mechanics for Electronics
, Espoo, Finland, 4/12/02.

Tolerance analysis in assembly of mechanics for electronics. / Heilala, Juhani; Väätäinen, Otso; Salmi, Timo; Voho, Paavo.

Mechanics for electronics: VTT Research programme 2000 - 2002. Espoo : VTT Technical Research Centre of Finland, 2002. p. 7-26 (VTT Symposium; No. 223).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Tolerance analysis in assembly of mechanics for electronics

AU - Heilala, Juhani

AU - Väätäinen, Otso

AU - Salmi, Timo

AU - Voho, Paavo

PY - 2002

Y1 - 2002

N2 - Assembly is more than putting parts together; it can be seen as a product and a process. In this article, the focus is on assembly modelling, product level dimensional variation analysis and automated assembly process tolerance analysis. Dimensioning philosophy and the choice of tolerances is a function of design, which affects not only the product 's function and performance but also its manufacture and assembly. Tolerances constrain affect ease and the sequence of assembly, determining the specifications of assembly technology such as jigs and fixtures, assembly machines, robots, and grippers. In robotic assembly, the different schemes for accomplishing a task may have different success rates depending on what mechanical accuracy or force levels are involved or how sensitive the technique is to small errors in how the parts were made. Parts, fixtures and other equipment vary in size and position. These variations can mean that the robot will assemble one set of parts perfectly, yet will create assembly error with another set. To ensure that parts are loaded and assembled reliably, without misfits, a tolerance study must be done. The authors shall review the importance of tolerance analysis in assembly, product and process development. Different tolerance analysis methods and types of tools exist and are shown in the paper. This is an introduction, a current state review of tolerance analysis and a feasibility study of potential method and software to be used in the tolerance analysis for the precise assembly of electromechanical products.

AB - Assembly is more than putting parts together; it can be seen as a product and a process. In this article, the focus is on assembly modelling, product level dimensional variation analysis and automated assembly process tolerance analysis. Dimensioning philosophy and the choice of tolerances is a function of design, which affects not only the product 's function and performance but also its manufacture and assembly. Tolerances constrain affect ease and the sequence of assembly, determining the specifications of assembly technology such as jigs and fixtures, assembly machines, robots, and grippers. In robotic assembly, the different schemes for accomplishing a task may have different success rates depending on what mechanical accuracy or force levels are involved or how sensitive the technique is to small errors in how the parts were made. Parts, fixtures and other equipment vary in size and position. These variations can mean that the robot will assemble one set of parts perfectly, yet will create assembly error with another set. To ensure that parts are loaded and assembled reliably, without misfits, a tolerance study must be done. The authors shall review the importance of tolerance analysis in assembly, product and process development. Different tolerance analysis methods and types of tools exist and are shown in the paper. This is an introduction, a current state review of tolerance analysis and a feasibility study of potential method and software to be used in the tolerance analysis for the precise assembly of electromechanical products.

KW - tolerance analysis methods

KW - assembly modelling

KW - assembly process and equipment design

KW - digital plant technologies

M3 - Conference article in proceedings

SN - 951-38-5736-0

T3 - VTT Symposium

SP - 7

EP - 26

BT - Mechanics for electronics

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Heilala J, Väätäinen O, Salmi T, Voho P. Tolerance analysis in assembly of mechanics for electronics. In Mechanics for electronics: VTT Research programme 2000 - 2002. Espoo: VTT Technical Research Centre of Finland. 2002. p. 7-26. (VTT Symposium; No. 223).