scholarly journals PEMBUATAN JIG PROSES PRE DRILL MODEL B74 GUNA MENURUNKAN REJECT CONCENTRIC PADA LINI PRODUKSI PENGECORAN OUTER TUBE DI PT KAYABA INDONESIA

Technologic ◽  
2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Herry Syaifullah
Keyword(s):  
Outer Tube ◽  
Solid Model ◽  
Tube Model

Salah satu produk PT Kayaba Indonesia adalah front fork assy yang mana didalamnya terdapat part yaitu outer tube. Proses awal pembuatan outer tube adalah proses pengecoran. Ada 2 macam mesin pengecoran gravitasi yang digunakan oleh PT Kayaba Indonesia yaitu mesin pengecoran gravitasi existing tipe core dan mesin pengecoran gravitasi tilting tipe solid. Model B74 salah satu produk yang menggunakan mesin pengecoran gravitasi tilting sehingga model B74 termasuk ke dalam tipe solid. Sebelum masuk ke proses machining, outer tube model B74 harus melewati proses Pre drill untuk membuat diameter dalam agar memudahkan proses selanjutnya pada lini pemesinan. Saat ini proses Pre drill model B74 memiliki masalah reject concentric yang cukup tinggi, yaitu 7%. Proses penurunkan reject concentric proses Pre-drill model B74 telah dilakukan Penulis bersama tim mekanik proses pengecoran meliputi upaya memindahkan proses Pre-drill model B74 ke mesin macod dan pembuatan jig untuk mendukung proses tersebut. Perbaikan yang dilakukan berhasil menurunkan reject yang terjadi, dari 7% dari 8.812 set menjadi 1,4% dari 3.360 set. Selain itu perbaikan ini juga menaikan kuantitas produksi sehingga yang awalnya membutuhkan 2 shift untuk mencapai target menjadi cukup hanya 1 shift dengan hari kerja normal.

scholarly journals Towards Recognition of Scale Effects in a Solid Model of Lattices with Tensegrity-Inspired Microstructure

Solids ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 50-59
Author(s):  
Wojciech Gilewski ◽  
Anna Al Sabouni-Zawadzka
Keyword(s):  
Mechanical Properties ◽  
Continuum Model ◽  
Scale Effects ◽  
Theory Of Elasticity ◽  
Solid Model ◽  
Gradient Theory ◽  
General Description ◽  
Normal Forces ◽  
Second Gradient ◽  
Proposed Model

This paper is dedicated to the extended solid (continuum) model of tensegrity structures or lattices. Tensegrity is defined as a pin-joined truss structure with an infinitesimal mechanism stabilized by a set of self-equilibrated normal forces. The proposed model is inspired by the continuum model that matches the first gradient theory of elasticity. The extension leads to the second- or higher-order gradient formulation. General description is supplemented with examples in 2D and 3D spaces. A detailed form of material coefficients related to the first and second deformation gradients is presented. Substitute mechanical properties of the lattice are dependent on the cable-to-strut stiffness ratio and self-stress. Scale effect as well as coupling of the first and second gradient terms are identified. The extended solid model can be used for the evaluation of unusual mechanical properties of tensegrity lattices.

Tube model predictive control for an autonomous race car

2021 ◽  
pp. 1-23
Author(s):  
A. Wischnewski ◽  
M. Euler ◽  
S. Gümüs ◽  
B. Lohmann
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Tube Model ◽  
Race Car

Surgical Program for Craniosynostosis Using Three-Dimensional Solid Model, Combined With Autologous Blood Transfusion in a Japanese Craniofacial Unit

2001 ◽  
Vol 12 (5) ◽  
pp. 479-484 ◽  
Author(s):  
Tetsuji Uemura ◽  
Takashi Hayashi ◽  
Yoshihiko Furukawa ◽  
Nobuyuki Mitsukawa ◽  
Atsushige Yoshikawa ◽  
...  
Keyword(s):  
Blood Transfusion ◽  
Autologous Blood ◽  
Three Dimensional ◽  
Solid Model ◽  
Autologous Blood Transfusion

scholarly journals Asymptotic behaviour for the vibrations modeled by the standard linear solid model with a thermal effect

2013 ◽  
Vol 399 (2) ◽  
pp. 472-479 ◽  
Author(s):  
Margareth S. Alves ◽  
Celene Buriol ◽  
Marcio V. Ferreira ◽  
Jaime E. Muñoz Rivera ◽  
Mauricio Sepúlveda ◽  
...  
Keyword(s):  
Asymptotic Behaviour ◽  
Thermal Effect ◽  
Solid Model ◽  
Standard Linear Solid Model ◽  
Standard Linear Solid ◽  
Standard Linear

Developing of Three Degree of Freedoms SCARA Robot

2011 ◽  
Vol 267 ◽  
pp. 217-220 ◽  
Author(s):  
Jiang Tian Shi ◽  
De Xin Sun ◽  
Hong Zhuang Zhang
Keyword(s):  
Control System ◽  
Three Dimensional ◽  
Solid Model ◽  
Motion Controller ◽  
Scara Robot ◽  
Mechanical Structure ◽  
Open Hardware ◽  
Software Structure ◽  
The Status

Mechanical structure of three degree of freedoms SCARA robot adopts horizontal joints, and opening PMAC multitude axis motion controller based PC is looked as kernel of control system, adopts the open hardware and software structure, we can conveniently enlarge its functions according to needs, so it has very good expansibility. Its three-dimensional solid model and virtual assemble is carried out using CATIA application, so that we can estimate the status of interference. Through validation, we can prove the feasibility of the robot.

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