Geometrical form of Rivers

1920 ◽  
Vol 1 (5supp) ◽  
pp. 446-447
Keyword(s):  
Geometrical Form

Artifact Design and Measurement Error Analysis in the Evaluation of Lead Measurement Accuracy of Helical Gear Using Wedge Artifact

2010 ◽  
Vol 132 (7) ◽  
Author(s):  
Masaharu Komori ◽  
Fumi Takeoka ◽  
Aizoh Kubo ◽  
Kazuhiko Okamoto ◽  
Sonko Osawa ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Plane Surface ◽  
Design Method ◽  
Measuring Instrument ◽  
Setting Error ◽  
Geometrical Form ◽  
Measurement Experiment ◽  
Mechanical Devices ◽  
Tooth Flank ◽  
Artifact Design

The reduction in the vibration and noise of gears is an important issue in mechanical devices such as vehicles and wind turbines. The characteristics of the vibration and noise of gears are markedly affected by deviations of the tooth flank form of micrometer order; therefore, strict quality control of the tooth flank form is required. The accuracy of the lead measurement for a gear-measuring instrument is usually evaluated using a helicoid artifact. However, it is difficult to manufacture it with high accuracy because the helix is a complicated geometrical form. To solve this problem, a method of evaluating a gear-measuring instrument using a wedge artifact, which includes a highly precise plane surface, has been proposed. In this research, to put the wedge artifact into practice, a design method of the wedge artifact is developed. In addition, the effects of the measuring condition and the setting error of the wedge artifact on the measurement result are investigated. The uncertainty for the evaluation method using a wedge artifact is assessed by a measurement experiment and simulation.

Magnetic Abrasive Deburring Technology for Blanks

2016 ◽  
Vol 25 ◽  
pp. 1-10 ◽  
Author(s):  
Yuri M. Baron
Keyword(s):  
Sheet Steel ◽  
Cutting Tools ◽  
Manual Work ◽  
Magnetic Abrasive Finishing ◽  
Work Area ◽  
Abrasive Finishing ◽  
Geometrical Form

Blanks made from sheet steel or other materials have burrs on their edges. The burrs are formed on the blanks at cutting down or processing of them by cutting tools. Removing of the burrs requires a lot of manual work. Frequently the blanks have small rigidity, and it especially complicates removal of the burrs. This article describes intensification of the magnetic abrasive finishing method (MAF) with a goal to eliminate the manual deburring and to raise productivity of deburring on the flexible blanks. The study goal was achieved by optimization of MAF conditions and a of the work area geometrical form.

scholarly journals The formation of lactic acid in desiccated amphibian muscles

1930 ◽  
Vol 106 (742) ◽  
pp. 122-131 ◽  
Keyword(s):  
Lactic Acid ◽  
Chloride Solution ◽  
Sartorius Muscle ◽  
Silk Thread ◽  
Experimental Procedure ◽  
The Third ◽  
Uniform State ◽  
Cent Sodium ◽  
Geometrical Form ◽  
Determining Factor

The present paper is the third of a series dealing with the effects of freezing and drying on living amphibian muscle (1, 2). In this paper it is shown that simple drying of muscles causes the production of lactic acid, in amount identical with that produced by the corresponding degree of freezing (2). This finding confirms the view expressed in the earlier communications that the effects of freezing and drying are identical, the determining factor in each case being the removal from the muscle of a certain amount of water. Experimental Procedure . To ensure even drying throughout, it was necessary to use a thin muscle of regular geometrical form. The sartorius muscle of the frog was therefore chosen. The frogs were precooled for some hours at zero. The muscles were then carefully removed at their insertions, wiped on filter paper, and each individual muscle suspended by a silk thread of known weight (see later) in a stoppered bottle, over 0·72 per cent, sodium chloride solution. After standing at 0° C. for 24 hours, to allow of the removal of the lactic acid formed during the manipulation, the muscles were weighed, and rapidly dried by being suspended in bottles over solid calcium chloride. It has already been shown that this method of drying produces a uniform state throughout the muscle (1, p. 187). They were removed at intervals for weighing.

A new geometrical form of silicon. Synthesis and structure of tetraethylammonium bis(1,2-benzenediolato)fluorosilicate(IV)

1981 ◽  
Vol 103 (17) ◽  
pp. 5269-5270 ◽  
Author(s):  
John J. Harland ◽  
Roberta O. Day ◽  
Jean F. Vollano ◽  
Arjun C. Sau ◽  
Robert R. Holmes
Keyword(s):  
Geometrical Form

scholarly journals Advanced High Strength Steel in Auto Industry: an Overview

2014 ◽  
Vol 4 (4) ◽  
pp. 686-689 ◽  
Author(s):  
N. Baluch ◽  
Z. M. Udin ◽  
C. S. Abdullah
Keyword(s):  
Automotive Industry ◽  
High Strength Steel ◽  
Low Cost ◽  
High Strength ◽  
Direct Result ◽  
Advanced High Strength Steel ◽  
Geometrical Form ◽  
Cost Efficient ◽  
Safety Attributes ◽  
Selection Of

The world’s most common alloy, steel, is the material of choice when it comes to making products as diverse as oil rigs to cars and planes to skyscrapers, simply because of its functionality, adaptability, machine-ability and strength. Newly developed grades of Advanced High Strength Steel (AHSS) significantly outperform competing materials for current and future automotive applications. This is a direct result of steel’s performance flexibility, as well as of its many benefits including low cost, weight reduction capability, safety attributes, reduced greenhouse gas emissions and superior recyclability. To improve crash worthiness and fuel economy, the automotive industry is, increasingly, using AHSS. Today, and in the future, automotive manufacturers must reduce the overall weight of their cars. The most cost-efficient way to do this is with AHSS. However, there are several parameters that decide which of the AHSS types to be used; the most important parameters are derived from the geometrical form of the component and the selection of forming and blanking methods. This paper describes the different types of AHSS, highlights their advantages for use in auto metal stampings, and discusses about the new challenges faced by stampers, particularly those serving the automotive industry.

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