Study on a Non-Contact and Integrated Measuring System for Profile Accuracy and Surface Roughness of Camshaft Workpieces

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Project title

Code/計畫編號

MOST104-2221-E019-012

Translated Name/計畫中文名

凸輪軸件之輪廓精度與表面粗糙度的非接觸式整合量測系統研究

Project Coordinator/計畫主持人

Wen-Tung Chang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=11582574

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

01-07-2016

Bugetid/研究經費

619千元

ResearchField/研究領域

電子電機工程
機械工程

"凸輪為各種機器與自動化設備中常用的機械元件，其透過直接接觸使從動件產生預定的不規則拘束運動，藉以達成所需的運動控制。為了實現此目的，凸輪機構在設計時必須經過一連串嚴謹的分析與評估程序。在完成設計程序之後，凸輪軸件必須經過多道製造程序方可完成，而其中的關鍵為凸輪輪廓的精密加工程序。當凸輪輪廓的製造誤差超過其容許的公差量時，將會影響其從動件的定位精度與機構的動態特性。因此，為了確保凸輪機構在高速運轉的過程中能使其從動件的位置達到預定的精確度並降低機械的振動與噪音，凸輪輪廓必須被精確地加工。為了使凸輪軸件成品產生預期的優越性能，在其製造完成時必須設法檢測輪廓精度與表面粗糙度以控制產品品質。現有的凸輪軸件之量測與檢測技術多為接觸式，但其儀器設備的價格大多相當昂貴，至於非接觸式的量測與檢測技術則仍有待改善或研發。本計畫的目的在於研發一套創新的非接觸式整合量測系統以同時應用於凸輪軸件的輪廓精度與表面粗糙度檢測工作。本計畫所擬採用的關鍵性量測裝置為雷射位移計，並透過其搭配精密運動平台模組、精密主軸夾頭模組及機器視覺模組等以構成一套創新的整合量測系統。本計畫預定以一年的時間完成研究工作。首先，會針對量測方法的核心理論進行推導，並針對量測方法相對應的硬體架構進行設計與製作。然後，會進行系統整合與開發其自動化量測程序，並進行實際的輪廓精度與表面粗糙度量測實驗。最後，會針對該套系統的量測精度與重現性進行驗證。" "Cams are mechanical components frequently used in various machines and automation equipment, which makes their followers to produce prescribed constraint motions through direct contact in order to achieve motion control. To realize such a purpose, cam mechanisms must be designed through exact analysis and evaluation procedures. After the design stage, camshaft workpieces must be fabricated through several manufacturing processes. The key manufacturing process is the precision machining of the cam profile. When manufacturing errors of cam profiles exceed their allowable tolerance amounts, the positioning accuracy of the follower and dynamic characteristics of the cam mechanism will be influenced. Thus, in order to ensure that the follower can achieve prescribed positioning accuracy and to reduce vibration and noise during high speed operation of the cam mechanism, cam profiles must be precisely machined. In order to produce camshaft workpieces with superior performance, their profile accuracy and surface roughness must be inspected to ensure quality control. Most of existing measurement and inspection techniques for camshaft workpieces are contact types, and their equipment and instruments are quite expensive. Also, non-contact type measurement and inspection techniques for camshaft workpieces are still needed for improvement or development. The purpose of this project is to develop an innovative non-contact and integrated measuring system for simultaneously inspecting the profile accuracy and surface roughness of camshaft workpieces. The key measuring device that will be adopted in the project is a laser displacement meter. An innovative measuring system will be mainly consisted of the laser displacement meter, precision motion table modules, a precision spindle chuck module and a machine vision module. The term of the project is one year. Theoretical derivation of the measuring method will be carried out, and its corresponding measuring system will be designed and constructed. Then, experiments for the profile accuracy and surface roughness measurement will be conducted to test the feasibility and to verify the measuring accuracy and repeatability of the developed method and system."

Keyword(s)

凸輪軸件
盤形凸輪
輪廓精度
表面粗糙度
非接觸式量測
雷射位移計
機器視覺
自動化光學檢測
Camshaft workpiece
Disk cam
Profile accuracy
Surface roughness
Non-Contact measurement
Laser displacement meter
Machine vision
Automated optical inspection

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Study on a Non-Contact and Integrated Measuring System for Profile Accuracy and Surface Roughness of Camshaft Workpieces

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