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Merancang Sistem Penarik pada Mesin Pemarut Singkong Menggunakan VDI 2221 Nanda Pranandita; Muhammad Yunus
Manutech : Jurnal Teknologi Manufaktur Vol. 13 No. 01 (2021): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Cassava is a multipurpose plant. Apart from being used as a daily snack, cassava is also used as raw material for various industries. Currently, cassava processing technology has varied. One of them is a grating machine. The grating machine is used in order to make cassava into cassava pulp. In this research, the design of a cassava grater machine will be carried out. The design that is carried out focuses on the pulling system in the grated process. The design method used is VDI 2221. The stages in VDI 2221 are clarification of the task, conceptual design, embodiment concept, detailed design. Based on the results of the design carried out, several conclusions can be drawn, namely the chosen concept uses three towing rollers, a gear and a sprocket as a transmission roller pulling motion, while the gap control system uses bolts as the regulator. In addition, after carrying out the loading analysis on the shaft to be used as a towing roll, a roller with a size of Ø20mm can be used because the loading simulation results show that the maximum torsional stress value that occurs is 4.601 N / mm2 which is still much smaller than the value of the permitted torsional stress.

Analisa Kenyamanan Kendaraan Multiguna Pedesaan Pada Kekasaran Jalan Iso 8608 Nanda Pranandita
Manutech : Jurnal Teknologi Manufaktur Vol. 8 No. 02 (2016): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

The vehicle suspension system is an important part to minimize the vibration of the vehicle caused by road unevenness. The classification of the road surface in this study is based on the classification of road roughness "Good" according to ISO 8606. The analysis of passive suspension system in this research may explain the frequency response which is received by the motorists while driving. The full car model with 1 DOF riders used in this study, simulated by using the numerical simulation software. The frequency response analysis is done on the vertical movement of the driver. Based on the analysis performed, the highest acceleration of 2.375 m / s2 at a frequency of 3.258 Hz. This value indicates the condition of "Uncomfortable" based on the table of ISO 2631. This condition will cause the rider toexperience dizziness, therefore it is strongly advised motorists to avoid frequencies below 7 Hz.

Analisa Getaran Akibat Kerusakan Deep Grove Ball Bearing Seri 6003RS Muhamad Riva’i; Nanda Pranandita
Manutech : Jurnal Teknologi Manufaktur Vol. 9 No. 02 (2017): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Measurement of the damage of elements in bearing can be by measuring the vibration generated in the form of a frequency signal when the pad is rotating. Measurement of vibration on the bearing by using vibration measuring instrument. Damage to the rolling bearing includes damage to the cage, outer ring, inner ring and balls. The rolling bearings used in this study are deep groove ball bearing type 6003 RS with internal diameter (d) = 17 mm, outer diameter (D) = 35 mm, bearing thickness (B) = 10, number of rolling elements (Nb) = 10 pieces, and the diameter of the rolling element (Bd) = 4.75 mm. In the rotation of the bearing (Fr) = 2003 rpm (33.38 Hz) we found the experimental results of bearings that have been damaged in the outer race at 138 Hz frequency, inner race damage at 196 Hz frequency, (ball) at a frequency of 88.8 Hz and cage damage at a frequency of 13.8 Hz.

Alat Bantu Penggerindaan Slideways Mesin Bubut Fajar Aswin; Nanda Pranandita; Ary Kiswanto; Syahdan Hafiz; Zaenal Zaenal
Manutech : Jurnal Teknologi Manufaktur Vol. 9 No. 02 (2017): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Lathe is a tool that rotates the work-piece about an axis of rotation to perform various operations such as cutting, sanding, knurling, drilling, or deformation, facing, turning, with tools that are applied to the work-piece to create an object with symmetry about that axis. There are several considerations that affect the lathe to work well, especially geometrical deviations that affect the quality degradation of the product in terms of shape and dimensions. One of the wear on the slide-way of the lathe can affect geometric aberrations. This paper discusses the design and manufacture of grinding tools to fix the lathes bed that can erode three slide-way planes in a single process to achieve flatness and square alignment with one another. The research method used is the experimental method by collecting the data needed to design the tool through literature study and direct observation to the lathe, then the data is processed to obtain the specification of the tool that will be designed by design method based on Verien Deutche Ingenieuer (VDI) 222 , the design result is then continued with the machining and fabrication process; before assembling, parts of the auxiliary equipment are tested in accordance with the design function indicator; the last stage is testing the tool as a whole to know the achievement of the tool against a predetermined goal. Based on the results of the grinding experiment on the three slideway planes with a feed depth of 0.03mm, the average flatness and alignment values ??are 0.02mm / 300mm and 0.07mm / 300mm, respectively. Based on the ISO 1708 standard on the tolerance of geometrical deviations, the grinding results have not allowed the tolerance. Still need more research about the influence of wear of grinding wheels to the grinding results.

Analisa Kerusakan Bantalan Bola (Ball Bearing) Berdasarkan Signal Getaran Muhamad Riva’i; Nanda Pranandita
Manutech : Jurnal Teknologi Manufaktur Vol. 10 No. 02 (2018): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Measurement of the damage of elements in bearing can be by measuring the vibration generated in the form of a frequency signal when the pad is rotating. Measurement of vibration on the bearing by using vibration measuring instrument. Damage to the rolling bearing includes damage to the cage, outer ring, inner ring and balls. The rolling bearings used in this study are deep groove ball bearing type 6003 RS with internal diameter (d) = 17 mm, outer diameter (D) = 35 mm, bearing thickness (B) = 10, number of rolling elements (Nb) = 10 pieces, and the diameter of the rolling element (Bd) = 4.75 mm. In the rotation of the bearing (Fr) = 2003 rpm (33.38 Hz) we found the experimental results of bearings that have been damaged in the outer race at 138 Hz frequency, inner race damage at 196 Hz frequency, (ball) at a frequency of 88.8 Hz and cage damage at a frequency of 13.8 Hz

Analisa Kenyamanan Pada Kendaraan Multiguna Pedesaan Dengan Pemodelan 8 Dof Nanda Pranandita
Manutech : Jurnal Teknologi Manufaktur Vol. 8 No. 01 (2016): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Vehicle suspension system is an important part to minimize the vibration of the vehicle caused by road unevenness. Ideal conditions would be difficult to obtain, especially in rural areas with uneven road conditions. Analysis of passive suspension system in this study is expected to explain the level of comfort in riding Rural Multipurpose Vehicles. Full car modelling with 1 DOF riders used in this study, simulated using numerical simulation software. Excitation roads used in the form of a sinusoidal wave with an amplitude of 0.05 m and a wavelength of 0.5 m. Analysis carried out on the comfort of the vertical acceleration response received driver’s head. Based on the simulation results showed that by using a constant speed between 20-40 km / h, the vehicle will be comfortable driving for more than 2.5 hours.

Analisis Pengaruh Perendaman Asap Cair dan NaOH terhadap Serat Daun Suji Dengan Perendaman Serat 15%, 20 % dan 25 % Pada Pengaplikasian Panel Panjat Dinding Naca Kirana; Yuliyanto Yuliyanto; Nanda Pranandita
Manutech : Jurnal Teknologi Manufaktur Vol. 15 No. 01 (2023): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v15i01.273

Suji leaves are one of the new materials that can form natural fibers. Suji leaf fiber is fiber obtained from suji leaves. Suji leaf fiber is one of the new materials that can be made into composite materials. The aim of this study was to determine the effect of immersing leaf fiber on liquid smoke and NaOH with fiber volume fractions of 15%, 20% and 25%, angular orientation (0°) and soaking times of 1 hour, 2 hours and 3 hours. Making composites using the hand-lay up method. Sampling using the full factorial method. The highest bending test result was in immersion of liquid smoke of 48.23 MPa at 25% fiber percentage with 1 hour immersion time. This means that the longer the soaking process of suji leaves with liquid smoke will decrease the flexural strength. The highest flexural test result was in NaOH immersion of 40.6 MPa at 20% fiber percentage with 3 hours of immersion time. This means that the longer the soaking process with NaOH will increase the flexural strength. Based on the BSAPI standard from the results of the bending test, the results obtained in this study cannot be used for making wall climbing panels because they do not meet the requirements, namely 112.8 Mpa, but for the manufacture of other materials such as car dashboards which have a type of High Impact ABS plastic material. 37-76 MPa.

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