An Experimental Study of Force Involved in Manual Rebar Bending Process

Simulasi Pembebanan Komponen Bender pada Desain Mesin Begel Fabricator Menggunakan Software Autodesk Inventor 2020

“…Metode fabrikasi begel dapat dilakukan dengan menggunakan cara manual dan mesin (begel fabricator). Penelitian yang dilakukan oleh (Deepu et al, 2018) menunjukkan besarnya gaya yang dibutuhkan pada proses bending baja tulangan berdiameter 8 mm dalam proses pembuatan begel adalah sebesar 196,13 N dengan momen 78,4 N.m untuk sudut penekukan 90°. Ditinjau dari konfigurasi gerakan pada proses bending, metode fabrikasi begel menggunakan mesin dapat dilakukan secara langsung dengan memanfaatkan gearbox dan komponen bender untuk menaikkan torsi poros penekuk baja tulangan.…”

“…Tahapan processing dilaksanakan dengan menggunakan data numerik hasil penelitian yang sudah dilakukan oleh peneliti sebelumnya. (Deepu et al, 2018) melakukan identifikasi terhadap gaya yang dibutuhkan untuk proses bending pada komponen rebar berdiameter 8 mm. Berdasarkan penelitian tersebut diperoleh gaya yang digunakan untuk proses bending sebesar 196,13 N. Selain itu, perhitungan teoritis yang dilakukan oleh (Yaghmour et al, 2018) untuk proses bending menunjukkan gaya sebesar 840 N dibutuhkan untuk proses bending rebar berdiameter 8 mm.…”

An Experimental Study of Improvised Portable Manual Rebar Bender

“…Typically the device comprises of at least one steel base plate 15mm thick (1), a 25 100mm diameter by 15mm thick rotary steel plate (2), the 40mm diameter steel bushing (3), a 32mm diameter high carbon steel pin (4), a 15mm diameter high carbon steel pin(5), one 15mm thick lever handle (6), one 25mm diameter G.I. Pipe handle (7), 15mm thick rebar adjustable guide (8), 15mm thick rebar guide plate ( 9), 12mm bolt with plain washer (10), a 10mm diameter bolt with nut stopper (11), nine 10mm 30 diameter measuring hole (12) in the steel base plate (1), one 6mm∅ diameter bolt with nut and plain washer (13) place at the end of the lever handle (6), and at least one adjustable measuring guide ( 14), 100mmdiameter by 6mm thick plain washer (15), four 6mm diameter holes (16a, 16b, 16c, and 16d) in the 15mm thick steel base plate (1), a 6mm diameter grease nipple (17), one 32mm diameter hole (18) in the steel base plate (1), two 25mm by 225mm holes (19a and 19b) in the steel base plate (1), and one 40mm diameter hole (20) in the rotary steel plate (2), and one 15 mm diameter hole (21) in the 15 mm thick rotary steel plate (2), and precut size of the rebar (22).…”

“…Referring to Figures 1, 2 and 7, first a suitable steel plate (typically 0.175m x 0.50m x 15mm) is cut for the steel base plate (1). A hole (18) slightly larger than 32mm diameter is drilled into the steel base plate (1), and the 32mm∅ high carbon steel pin (4) was welded in the hole, a grease nipple ( 17) was attached into the center top of the 32mm diameter high carbon steel pin (4) for lubrication, two holes (19a) and (19b) was drilled in the steel base plate (1) to serve as handle of the device, and another four holes (16a, 16b, 16c, and 16d), were drilled in the steel base plate for the log screw, nine measuring guide holes (12) were drilled in the steel base plate. A rebar guide plate ( 9) was welded on the upper left corner of the steel base plate (1) angle stopper (11) was also welded on the lower left side of the steel base plate (1) for measuring the desired angle of bend.…”

“…When exposed to salts, chemicals, or moisture, it can easily be destroyed (11) . Thus, training for a novice is essential to make them experts in the field (12) and save money, time, and materials (13) . Also, even automated bar bending that gives productivity can result in inaccuracies in quantity estimate (14) .…”