Investigation on gear rolling process using conical gear rollers and design method of the conical gear roller

2018 ◽  
Vol 259 ◽  
pp. 141-149 ◽  
Author(s):  
Tao Wu ◽  
Guangchun Wang ◽  
Jin Li ◽  
Ke Yan
Keyword(s):  
Design Method ◽  
Rolling Process ◽  
Gear Rolling ◽  
Conical Gear

Roll design method using virtual flow line for multi-stage profile rolling process

2018 ◽  
Vol 32 (10) ◽  
pp. 4813-4819
Author(s):  
Hyeon-Seok Jung ◽  
Jeong-Hun Kim ◽  
Byung-Min Kim
Keyword(s):  
Flow Line ◽  
Design Method ◽  
Rolling Process ◽  
Roll Design ◽  
Multi Stage

Design method for intermediate roll in multi-stage profile ring rolling process: The case for excavator idler rim

2014 ◽  
Vol 15 (3) ◽  
pp. 503-512 ◽  
Author(s):  
Kyung-Hun Lee ◽  
Dae-Cheol Ko ◽  
Dong-Hwan Kim ◽  
Seon-Bong Lee ◽  
Nag-Mun Sung ◽  
...  
Keyword(s):  
Design Method ◽  
Rolling Process ◽  
Ring Rolling ◽  
Multi Stage ◽  
Ring Rolling Process ◽  
Profile Ring Rolling

Research on Design Method of Polygonal Roll Pass for Stretch Reduced Seamless Tubes

2010 ◽  
Vol 654-656 ◽  
pp. 1614-1617 ◽  
Author(s):  
Sheng Zhi Li ◽  
Hai Yan Bao ◽  
Zhi Chao Zhang ◽  
Yang Hua Li ◽  
Gong Ming Long
Keyword(s):  
Wall Thickness ◽  
Design Method ◽  
Element Model ◽  
Rolling Process ◽  
Contact Length ◽  
Transverse Wall ◽  
Roll Pass ◽  
Steel Tubes ◽  
Pass System ◽  
Lateral Curvature

the aid of commercially available software MSC.SuperForm, a 3-D finite element model has been established to simulate the rolling process of steel tubes on the stretch reducing mill (SRM) with group centralized differential drive in certain factories. A special effort was made to analyze the fluctuation of transverse wall thickness uniformity. It was found that the wall thickness of each stand was accumulated in the original pass 50°~60° along the circumferential direction, which caused the formation of the inner hexagon defects and worsen. In view of this, this paper proposes a modified roll pass design method which uses the interactive technology of CAD graph curve and MATLAB equation. By means of decreasing the lateral curvature of roll pass contour curve to enlarge the contact length between the tube and groove, also the rolling process using the new pass system were simulated and analyzed. The results indicate that the design of such polygonal roll pass can be effective in improving the inner hexagon defects.

Process Planning of Gear Rolling with the Finite Element Method

2014 ◽  
Vol 622-623 ◽  
pp. 986-992 ◽  
Author(s):  
Alireza Khodaee ◽  
Arne Melander
Keyword(s):  
Gear Wheel ◽  
Rolling Process ◽  
Load Level ◽  
Axial Loads ◽  
Fe Method ◽  
Plastic Deformation Process ◽  
Gear Manufacturing ◽  
Rolling Method ◽  
Gear Wheels ◽  
Gear Rolling

Gear rolling is a new gear manufacturing process which can partly replace traditional gear milling processes. High gear wheels with modules of 4mm up to 6mm are of interest to truck manufacturing. The process is of interest since it involves no material removal and since it has the potential to give good performance of the gear wheels. The process must be adopted for the large plastic deformations which occur for gear rolling with large modules. In this paper special emphasis will be put to loads and torques during the gear rolling process of gear wheels with large modulus. The FE method will be used to model the plastic deformation process to fully form a gear wheel with the gear rolling method. The radial and axial loads and the torques in this process are predicted. The loads of the process are high compared to the situation for small gear wheels so simulation of load level is essential for the design of rolling machines for high gears.

Inverse Thermo-Mechanical Processing (ITMP) Design of a Steel Rod During Hot Rolling Process

2019 ◽  
Author(s):  
Anand Balu Nellippallil ◽  
Pranav Mohan ◽  
Janet K. Allen ◽  
Farrokh Mistree
Keyword(s):  
Hot Rolling ◽  
Design Method ◽  
Integrated Design ◽  
Computational Design ◽  
Rolling Process ◽  
Manufacturing Processes ◽  
Mechanical Processing ◽  
Design Exploration ◽  
And Performance ◽  
Decision Based Design

Abstract The production of steel products involves a series of manufacturing processes. The material Thermo-Mechanical Processing (TMP) history at each process affects the final properties and performances of the product. Experiments and plant trials to predict these properties and performance of steel products are expensive and time consuming. This has resulted in the need for computational design methods and tools that support a human designer in realizing such complex systems involving the material, product and manufacturing processes from a simulation-based design perspective. In this paper, we present a Goal-oriented Inverse Design method to achieve the integrated design exploration of materials, products and manufacturing processes. The key functionality offered is the capability to carry out a microstructure-mediated design satisficing specific processing requirements and performance goals of the product. Given models to establish the information flow chain, a designer can use the method for the decision-based design exploration of material microstructure and processing paths to realize products in a manufacturing process chain. The efficacy of the method is tested using an industry-inspired hot rolling problem to inversely design the thermo-mechanical processing of a steel rod. The focus here is the method and associated design constructs which are generic and support the formulation and decision-based design of similar problems involving materials, products and associated manufacturing processes.

New Groove Design and Three-Dimensional Numerical Simulation of Ultra-Fine Grain of Bar Rolling

2012 ◽  
Vol 581-582 ◽  
pp. 879-882
Author(s):  
Lei Cao ◽  
Xue Tong Li ◽  
Shu Jian Liu ◽  
Min Ting Wang
Keyword(s):  
Plastic Strain ◽  
Cross Section ◽  
Design Method ◽  
Three Dimensional ◽  
Rolling Process ◽  
Analysis Model ◽  
Bar Rolling ◽  
Groove Design ◽  
Fine Grain ◽  
Set Up

A new groove design method of uniform strong strain of bar rolling was proposed based on the principle of strong plastic deformation to manufacture ultra-fine grain(UFG), and flat-oval groove type with the characteristics of big crushed and multidirectional deformation was set up. The numerical analysis model of hot continuous bar rolling process was created using nonlinear finite element method. The study of the law of plastic strain distribution after each rolling pass of the caliber series indicated that the caliber can satisfy with the precise size and shape, and can also better introduce the plastic strain to the center of cross section and get uniform strong strain. The largest strain was more than 5.0 in the center of cross section, in which condition ultra-fine grain can be fabricated. Therefore, this study provides important theoretical basis for the ultra-fine grain of bar rolling development.

Profile Shifted Conical Involute Gear With Deep Tooth Depth

2007 ◽  
Author(s):  
Tatsuya Ohmachi ◽  
Atsushi Uchino ◽  
Hidenori Komatsubara ◽  
Makoto Saito ◽  
Kohei Saiki ◽  
...  
Keyword(s):  
Design Method ◽  
Test Results ◽  
Hypoid Gear ◽  
Shift Coefficient ◽  
New Concepts ◽  
Tooth Surfaces ◽  
Involute Gears ◽  
Conical Gears ◽  
Conical Gear ◽  
Good Agreement

This paper proposes a new design method for profile shifted conical gear with deep tooth depth. This method has two new concepts. First, this method is based on the designed pitch point where the rack shift coefficient is not zero. Second, this method is based on the theory of nonintersecting bevel gear such as hypoid gear, to decide the mounting dimensions of the profile shifted conical involute gears with deep tooth depth. The profile shifted conical involute gears have the designed pitch point that is not the standard pitch point. Limits of the rack shift coefficient and the facewidth, for the undercut and the zero top land, are clarified. Next, the production system is shown, and several typical test gears are manufactured. Paths of contact between tooth surfaces of profile shifted conical gears are obtained by tooth bearing tests. As a result, the measured value of limits of the rack shift coefficient and the facewidth on the manufactured tested gears are in good agreement with the theoretical ones. Moreover, test results of tooth bearing are in good agreement with the theoretical ones.

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