scholarly journals Five-axis Numerical Control of Electrochemical Mechanical Polishing of an Integral Impeller

2020 ◽  
pp. 12504-12523
Author(s):  
Bo Xu ◽  
Keyword(s):  
Mechanical Polishing ◽  
Numerical Control ◽  
Electrochemical Mechanical Polishing ◽  
Five Axis

scholarly journals Study of Machining of Gears with Regular and Modified Outline Using CNC Machine Tools

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2913
Author(s):  
Rafał Gołębski ◽  
Piotr Boral
Keyword(s):  
Machine Tools ◽  
Coordinate Measuring Machine ◽  
Optical Microscope ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Cylindrical Gears ◽  
Measuring Machine ◽  
Five Axis

Classic methods of machining cylindrical gears, such as hobbing or circumferential chiseling, require the use of expensive special machine tools and dedicated tools, which makes production unprofitable, especially in small and medium series. Today, special attention is paid to the technology of making gears using universal CNC (computer numerical control) machine tools with standard cheap tools. On the basis of the presented mathematical model, a software was developed to generate a code that controls a machine tool for machining cylindrical gears with straight and modified tooth line using the multipass method. Made of steel 16MnCr5, gear wheels with a straight tooth line and with a longitudinally modified convex-convex tooth line were machined on a five-axis CNC milling machine DMG MORI CMX50U, using solid carbide milling cutters (cylindrical and ball end) for processing. The manufactured gears were inspected on a ZEISS coordinate measuring machine, using the software Gear Pro Involute. The conformity of the outline, the tooth line, and the gear pitch were assessed. The side surfaces of the teeth after machining according to the planned strategy were also assessed; the tests were carried out using the optical microscope Alicona Infinite Focus G5 and the contact profilographometer Taylor Hobson, Talysurf 120. The presented method is able to provide a very good quality of machined gears in relation to competing methods. The great advantage of this method is the use of a tool that is not geometrically related to the shape of the machined gear profile, which allows the production of cylindrical gears with a tooth and profile line other than the standard.

Basic experimental investigation of pulsed electrochemical mechanical polishing process

2009 ◽  
Vol 25 (7) ◽  
pp. 535-540 ◽  
Author(s):  
J. J. Yi ◽  
C. M. Chen ◽  
X. Q. Tian ◽  
B. Y. Ji
Keyword(s):  
Experimental Investigation ◽  
Mechanical Polishing ◽  
Polishing Process ◽  
Electrochemical Mechanical Polishing

Experimental Research of Electrochemical Mechanical Polishing (ECMP) for Micro Tool Electrode

2011 ◽  
Vol 314-316 ◽  
pp. 1846-1850 ◽  
Author(s):  
Shuai Guo ◽  
Z.N Guo ◽  
Hong Ping Luo ◽  
Wen Cai Gu
Keyword(s):  
Experimental Research ◽  
Process Parameters ◽  
Mechanical Polishing ◽  
Working Fluid ◽  
Tool Electrode ◽  
Electrical Parameters ◽  
Electrochemical Mechanical Polishing ◽  
Major Process ◽  
Micro Tool ◽  
Quantitative Analyses

The mechanism of the elctrochemical mechanical polishing (ECMP) technology for micro tool electrode was investigated. In this paper, suitable major process parameters on the surface quality were evaluated, the major parameters contains electrical parameters, machining gap, the working fluid and other factors. In quantitative analyses, the process of the ECMP technology were conducted. The roughness of the workpiece was reduced from a relatively high value to a mirror effect.

Computation of Optimal Workpiece Orientation for Multi-axis NC Machining of Sculptured Part Surfaces

2002 ◽  
Vol 124 (2) ◽  
pp. 201-212 ◽  
Author(s):  
Stephen P. Radzevich ◽  
Erik D. Goodman
Keyword(s):  
Cutting Tool ◽  
Nc Machining ◽  
Numerical Control ◽  
Tool Geometry ◽  
Geometric Problem ◽  
Part Surface ◽  
Nc Machine ◽  
New Type ◽  
Five Axis ◽  
Workpiece Orientation

Optimal workpiece orientation for multi-axis sculptured part surface machining is generally defined as orientation of the workpiece so as to minimize the number of setups in 4-, 5- or more axis Numerical Control (NC) machining, or to allow the maximal number of surfaces to be machined in a single setup on a three-, four-, or five-axis NC machine. This paper presents a method for computing such an optimal workpiece orientation based on the geometry of the part surface to be machined, of the machining surface of the tool, and of the degrees of freedom available on the multi-axis NC machine. However, for cases in which some freedom of orientation remains after conditions for machining in a single setup are satisfied, a second sort of optimality can also be considered: finding an orientation such that the cutting condition (relative orientation of the tool axis and the normal to the desired part surface) remains as constant, at some optimal angle, as possible. This second form of optimality is obtained by choosing an orientation (within the bounds of those allowing a single setup) in which the angle between the neutral axis of the milling tool and the area-weighted mean normal to the part surface, at a “central” point with a normal in that mean direction, is zero, or as small as possible. To find this solution, Gaussian maps (GMap) of the part surfaces to be machined and the machining surface of the tool are applied. To our knowledge, we are the first [1] who have picked up this Gauss’ idea to sculptured part surface orientation problem and who have developed the general approach to solve this important engineering problem [2]. Later a similar approach was claimed by Gan [3]. By means of GMaps of these surfaces, the problem of optimal workpiece orientation can be formulated as a geometric problem on a sphere. The GMap on a unit sphere finds wide application for orientation of workpiece for NC machining, for probing on coordinate measuring machines, etc. GMaps are useful for selecting the type of cutting tool, its path, workpiece fixturing, and the type of NC machine (its kinematic capabilities). The primary process application addressed is 3- and 4-axis NC milling, although the techniques presented may be applied to machines with more general articulation. The influence of tool geometry is also discussed and incorporated within a constrained orientation algorithm. This paper covers the following topics: a) the derivation of the equations of the GMap of the part surface to be machined and the machining surface of the tool; b) calculation of the parameters of the weighted normal to the part surface; c) optimal part orientation on the table of a multi-axis NC machine; d) introduction of a new type of GMap for a sculptured part surface—its expandedGMapE; and e) introduction of a new type of indicatrix of a sculptured part surface and a particular cutting tool–the indicatrix of machinability.

Electrochemical mechanical polishing of thin film solar cell flexible stainless steel substrate

2016 ◽  
Vol 24 (2) ◽  
pp. 343-349 ◽  
Author(s):  
张克华 ZHANG Ke-hua ◽  
石 栋 SHI Dong ◽  
刘润之 LIU Run-zhi ◽  
肖志兰 XIAO Zhi-lan ◽  
程光明 CHENG Guang-ming
Keyword(s):  
Thin Film ◽  
Stainless Steel ◽  
Solar Cell ◽  
Thin Film Solar Cell ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Mechanical Polishing ◽  
Electrochemical Mechanical Polishing

Highly efficient planarization of sliced 4H–SiC (0001) wafer by slurryless electrochemical mechanical polishing

2019 ◽  
Vol 144 ◽  
pp. 103431 ◽  
Author(s):  
Xu Yang ◽  
Xiaozhe Yang ◽  
Kentaro Kawai ◽  
Kenta Arima ◽  
Kazuya Yamamura
Keyword(s):  
Mechanical Polishing ◽  
Highly Efficient ◽  
Electrochemical Mechanical Polishing

Friction and Wear-Mode Comparison in Copper Electrochemical Mechanical Polishing

2008 ◽  
Vol 155 (7) ◽  
pp. H520 ◽  
Author(s):  
Dedy Ng ◽  
Tapajyoti Sen ◽  
Feng Gao ◽  
Hong Liang
Keyword(s):  
Friction And Wear ◽  
Mechanical Polishing ◽  
Electrochemical Mechanical Polishing ◽  
Wear Mode

Investigation of anodic oxidation mechanism of 4H-SiC (0001) for electrochemical mechanical polishing

2018 ◽  
Vol 271 ◽  
pp. 666-676 ◽  
Author(s):  
Xu Yang ◽  
Rongyan Sun ◽  
Yuji Ohkubo ◽  
Kentaro Kawai ◽  
Kenta Arima ◽  
...  
Keyword(s):  
Anodic Oxidation ◽  
Oxidation Mechanism ◽  
Mechanical Polishing ◽  
Electrochemical Mechanical Polishing
Sign in / Sign up

Export Citation Format

Share Document