000			02963nam a22003377a 4500
003			OSt
005			20250714163415.0
008			250714b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH TJ 145 _bF35 2025
100			_aFajardo, Lineilla C. _eauthor
245			_aDevelopment of microcontroller-based bar feeder system for power hacksaw/ _cLineilla C. Fajardo, Trisha Mae P. Guevarra, Leonard N. Laborte, Jannella Kyle M. Naceda, Cyber Rose C. Requirme, and John Kenneth B. Sapallo.--
260			_aManila: _bTechnological University of the Philippines, _c2025.
300			_axiv, 133pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's thesis
502			_aCollege Of Industrial Technology.-- _bBachelor of engineering technology major in mechanical technology: _cTechnological University of the Philippines, _d2025.
504			_aIncludes bibliographic references and index.
520			_aThis thesis focused on the development of a microcontroller-based bar feeder system for a power hacksaw, aiming to automate metal feeding and improve efficiency over traditional manual methods. The system was designed to deliver consistent feed lengths while reducing human error. The prototype underwent two tests: the accuracy of feed length and the reliability of bar feeding speed. Across all tested lengths, minor discrepancies in feed accuracy were observed, influenced by factors such as mechanical play, vibration, and sensor placement. For the 50 mm target, the mean feed was 49.8 mm (SD = 0.75), while 100 mm trials averaged 99.67 mm (SD = 2.08). At 150 mm, feeds ranged from 148.5 to 152 mm (mean = 149.83 mm, SD = 1.89), and 200 mm trials showed overfeeding with a mean of 213.33 mm (SD = 2.40), suggesting alignment or calibration issues. The 500 mm trials showed minimal deviation (mean = 500.67 mm, range = ±3 mm). Feeding speed tests showed that the time required for feeding increased proportionally with the feed length. The system was consistent, and there was little variance in feeding times across the different tested lengths, e.g., at 150 mm it had a standard deviation of only 0.08 seconds. Although it had some inaccuracies, it was rated at 4.24 out of 5, which is a very satisfactory rating given by both the users and the experts. Such a grade was a measure of the simplicity of use and the possibility of streamlining the working routines within the workshop scenario. Additional work is yet to be done to ensure the highest performance at long lengths.
650			_aAutomatic
650			_aBar feeder
650			_aMetal feeding
700			_aGuevarra, Trisha Mae P. _eauthor
700			_aLaborte, Leonard N. _eauthor
700			_aNaceda, Jannella Kyle M. _eauthor
700			_aRequirme, Cyber Rose C. _eauthor
700			_aSapallo, John Kenneth B. _eauthor
942			_2lcc _cBTH CIT _n0
999			_c30351 _d30351