List of Articles Farzad Cheraghpour Samavati

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  1 - Redesigning and implementation of the FDM 3D-Printer for Increasing Print Accuracy by reducing vibrations
  Omid Sarabi Farzad Cheraghpour Samavati
  Fused Deposition Modeling (FDM) 3D printing is one of the fast-growing types of Rapid Prototyping (RP) technology. 3D printing refers to fabricating a physical object from a 3D digital model by laying down successive thin layers of material. The mechanical properties an More

  Fused Deposition Modeling (FDM) 3D printing is one of the fast-growing types of Rapid Prototyping (RP) technology. 3D printing refers to fabricating a physical object from a 3D digital model by laying down successive thin layers of material. The mechanical properties and quality of the printed objects are extensively dependent on various print parameters. This study aimed to find optimized tuning parameters of print such as nozzle diameter and speed and temperature of print to improve accuracy in the prototyped part. For this purpose, the type and material of the employed profiles were first improved during the structural design of the printer, such that the structural vibrations of the device were removed considerably. Secondly, the nozzle vibrations were reduced by the redesign of the printer’s extruder. The stop/start movement of the axes was optimized through the control of the driving stepper motors of the printer’s axes. The effect of these three optimization steps enhanced the accuracy of the printer to a considerable extent. In The experimental tests, various combinations of print parameters have been examined to find the best settings. Printing of the standard model evaluated the accuracy of the printer and confirmed the validity of the results. Manuscript profile
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  2 - Designing a wearable upper body exoskeleton mechanism with the aim of improving human movement performance
  Farbod Farzad Farzad Cheraghpour Samavati
       Wearable mechanisms and robots are designed to improve human performance and body shape, and their design aims to help humans interact better with the environment. By using this human-connected mechanism, it is possible to help disabled people i More

       Wearable mechanisms and robots are designed to improve human performance and body shape, and their design aims to help humans interact better with the environment. By using this human-connected mechanism, it is possible to help disabled people in more appropriate performance of movement activities such as walking, sitting and standing up, as well as in lifting objects that they are normally unable to lift. Improving a person's performance can include less fatigue in performing activities, protection against physical injuries resulting from heavy work, a person's capacity to carry more load, or a higher speed in performing movements. The upper body exoskeleton robotic mechanism (UBER) is designed as an easy-to-wear, flexible and adjustable mechanism to prevent common injuries, musculoskeletal, spinal and joint diseases. The purpose of developing this mobility aid robot for a skilled worker is to perform specialized tasks such as assembly operations in a production line in a relatively long period of time, with less fatigue and also to use the tools he needs easily. The stress and strain analysis performed with a load of 5 kilograms shows that the arm, in addition to bearing the weight of the user's hand, can also move a load of up to 3 kilograms. Considering the range of motion of the designed robot and the number of degrees of freedom, using this robot in the long term will maintain the skeletal health of the skilled worker, thus increasing production efficiency by reducing labor health costs. Manuscript profile