scholarly journals Four‐dimensional dynamic force measurement system for micro‐deep hole drilling

2020 ◽  
Vol 56 (8) ◽  
pp. 367-369
Author(s):  
Hongzhi Hu ◽  
Quanjin Teng ◽  
Fang Guan ◽  
Haitao Su ◽  
Cuifeng Xu
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Hole Drilling ◽  
Dynamic Force ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Force Measurement System

The influence of properties of printed circuit board resin and filler on drilling force

Circuit World ◽  
2018 ◽  
Vol 44 (4) ◽  
pp. 165-170
Author(s):  
Hongyan Shi ◽  
Xiaoke Lin ◽  
Qiuxin Yan ◽  
JiaNan Zhang
Keyword(s):  
Measurement System ◽  
Printed Circuit Board ◽  
Force Measurement ◽  
Circuit Board ◽  
Hole Drilling ◽  
Drilling Force ◽  
Content Type ◽  
Printed Circuit ◽  
Micro Drilling ◽  
Force Measurement System

Purpose The purpose of this paper is to study and obtain the influence of resin and filler properties of printed circuit board (PCB) on the drilling force during micro drilling. Design/methodology/approach Experiments were carried out to study the influence of PCB on micro-hole drilling force under high spindle speed. A drilling force measurement system was applied, and then, the influence of resin and filler properties of PCBs on the force was analyzed. The proportion of resin and filler in the PCB was defined as four levels, and the influence of PCBs based on the drilling force measurement was summarized. Findings The drilling force decreased with the decrease in the feed rate, and lower filler (16-30 per cent) and average resin (31-50 per cent) would have a positive impact on the drilling force. At the same time, the size of uniform and fine fillers would help to reduce the drilling force. Originality/value The drilling force measurement system was applied, and the influence of PCBs on force was analyzed, which could provide a reference value on the optimization of the drilling force during micro drilling.

scholarly journals Development and Implementation of a Dynamic Force Measurement System for Automatic Tool Changer System and Drawbar Mechanism in Machining Center

2021 ◽  
Author(s):  
Guofa Li ◽  
Yongchao Huo ◽  
Jialong He ◽  
Yanbo Wang ◽  
Jingfeng Wei
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Computer Software ◽  
Energy Operator ◽  
Electrical Signal ◽  
Dynamic Force ◽  
Time Dynamic ◽  
Automatic Tool Changer ◽  
Automatic Tool ◽  
Force Measurement System

Abstract Automatic tool changer system (ATCS) and drawbar mechanism (DM) are two of key basic parts in machining centers for realizing automatic tool-changing cycle. In the condition monitoring, fault diagnosis and failure warning of the ATCS and DM, the dynamic force is an important characteristic signal. However, there is little research about the specific dynamic force measurement system in this regard. Thus, a novel dynamic force measurement system (DFMS) is developed and implemented. Based on the BT40 toolholder, a resistance strain gauge-based force senor is used to convert the dynamic force signal into electrical signal. The real-time dynamic force acquiring system is controlled via an 8-bit RISC microcontroller. Digital measurements are obtained from the 24-bit sigma-delta analog-to-digital converter with a programmable gain array, which then are transmitted to the upper computer software via a wireless transceiver for display and storage. Finally, a Teager energy operator based dual-threshold two sentences endpoint detection method is proposed to extract the maximum dynamic force and the duration time. Experimental results show that the DFMS is reliable and can be easily used to detect the dynamic force for the ATCS and DM.

Design of a Dynamic Force Measurement System for Training and Evaluation of Suture Surgical Skills

2020 ◽  
Vol 44 (10) ◽  
Author(s):  
Fernando Pérez-Escamirosa ◽  
Salvador Montoya-Alvarez ◽  
Ricardo Manuel Ordorica-Flores ◽  
Luis Padilla-Sánchez ◽  
José Luis Jiménez-Corona ◽  
...  
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Surgical Skills ◽  
Dynamic Force ◽  
Force Measurement System

Deep Hole Drilling Technique (DHD)

2019 ◽  
Vol 88 (6) ◽  
pp. 485-488
Author(s):  
Shinji KAWAI ◽  
Takuya NAGAI ◽  
Shigetaka OKANO
Keyword(s):  
Hole Drilling ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Drilling Technique

scholarly journals An fMRI-compatible force measurement system for the evaluation of the neural correlates of step initiation

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Andrea Cristina de Lima-Pardini ◽  
Raymundo Machado de Azevedo Neto ◽  
Daniel Boari Coelho ◽  
Catarina Costa Boffino ◽  
Sukhwinder S. Shergill ◽  
...  
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Neural Correlates ◽  
Step Initiation ◽  
Force Measurement System
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