Measuring principle and technology of accumulate pitch error of large gear

2009 ◽  
Author(s):  
Jiaqi Jin ◽  
Lei Dong ◽  
Fenghui Zhao
Keyword(s):  
Pitch Error ◽  
Large Gear

Kinematic Modeling of the Gear Shaping Based Novel Cutting Area Analytical Method for Large Gear Shaper

2012 ◽  
Vol 557-559 ◽  
pp. 2225-2228
Author(s):  
Bing Yu ◽  
Lian Hong Zhang ◽  
Hong Qi Du ◽  
Fu Cong Liu
Keyword(s):  
Analytical Method ◽  
Empirical Formula ◽  
Driving Force ◽  
Theoretical Foundation ◽  
Kinematic Modeling ◽  
Large Gear ◽  
Gear Manufacturing ◽  
Gear Shaping

Large gear is widely used as a key component of heavy machineries. Gear shaping is the most commonly process of large gear manufacturing. For the design of large gear shaper, the determination of its main driving force depends on the empirical formula. However, its result has shown that the main driving force is much larger than what really needs, which produces a lot of waste. A novel analytical method is proposed in this paper. According to this method, the cutting area can be calculated precisely, and the design of main driving force will be more reasonably, it also provides the theoretical foundation for the design of large gear shaper.

Getriebeakustik von Elektrofahrzeugen*/Gearbox acoustic for electric vehicles - Investigation of the effects of wobble, concentricity and pitch error in high-speed-applications

2017 ◽  
Vol 107 (05) ◽  
pp. 334-339
Author(s):  
C. Prof. Brecher ◽  
C. Löpenhaus ◽  
M. Ahmad
Keyword(s):  
Design Process ◽  
Electric Vehicles ◽  
High Speed ◽  
Pitch Error ◽  
Decisive Influence

Der Einfluss fertigungs- sowie montagebedingter Abweichungen über dem Umfang auf das Anregungsverhalten, zum Beispiel Teilungs- oder Rundlaufabweichungen, bleibt im Auslegungsprozess konventioneller Getriebe weitestgehend unberücksichtigt. Diese über den Umfang veränderliche Kontaktgeometrie hat einen enormen Einfluss auf die Anregung der Drehordnungen bei schnelllaufenden Getrieben in Elektrofahrzeugen. Die Wichtigkeit der Betrachtung dieser Abweichungen werden in einer Simulationsstudie untersucht.   The influence of manufacturing- and assembly-related deviations are largely ignored in the design process of the excitation behavior of conventional transmissions. Effects of the deviation of tooth contacts over one revolution have a decisive influence on the excitation of the rotational order in gearboxes of electric vehicles. This report investigates in simulation the effects of these deviations on the excitation behavior considering high-speed-application.

Research on the large gear detecting system based on LabVIEW

2015 ◽  
pp. 457-461
Author(s):  
L Hao ◽  
X Zhang ◽  
B Li ◽  
S Li ◽  
Y He ◽  
...  
Keyword(s):  
Large Gear

Signal Sampling and Accuracy Analysis of Large Gear’s Angular Displacement Measuring its Deviation On-Machine

2011 ◽  
Vol 189-193 ◽  
pp. 4201-4204
Author(s):  
Jia Qi Jin ◽  
Hui Li
Keyword(s):  
Measurement Accuracy ◽  
Angular Displacement ◽  
Total Error ◽  
Measuring Method ◽  
Displacement Measurement ◽  
Signal Acquisition ◽  
Accuracy Analysis ◽  
Friction Disc ◽  
Large Gear ◽  
Circular Grating

To solve the critical problem of large gear deviation on-machine: angle displacement measurement that is how to get signal acquisition and accuracy analysis of angle displacement. A new measuring method is proposed, which applies the dividing mechanism (it is composed of friction disc and circular grating) to ensure index and pick up signal of gear corner correctly and strictly according to the principle of angular displacement measurement. Furthermore, the main error which affects measurement accuracy is analyzed, and accuracy is analyzed with geometrical theory such as Fourier series and error synthesis principle etc. The experimental results indicate that angel dividing and signal samplings are easier and more efficient by the dividing mechanism, furthermore, the accuracy is in the range of total error that is permitted by verification, and the mechanism can also meet the requirement of high accuracy, so the method is significance that assessing transmission accuracy of involutes gear.

A Study on Glass Molding Press and Pitch Error Analysis of a V-Grooved Quartz Fiber Array Block

2007 ◽  
Vol 364-366 ◽  
pp. 178-181
Author(s):  
Un Chung Cho
Keyword(s):  
Error Analysis ◽  
Quartz Fiber ◽  
Fiber Array ◽  
Glass Molding ◽  
Pitch Error ◽  
Quartz Substrates ◽  
Diagonal Axis

V-grooved quartz substrates are manufactured by glass molding press and the pitch errors of the molded quartz fiber array blocks are statistically investigated. The V-grooved carbon molds of 8 and 16 channels and 250 μm in pitch are machined and then quartz substrates are molded on the V-grooved carbon molds by glass molding press. The pitch errors of X, Y and diagonal axis are measured and then statically analyzed. It is demonstrated that the V-grooved quartz fiber array blocks of 8 and 16 channels and 250 μm in pitch can be manufactured by glass molding technology without significant pitch errors.

A portable instrument for checking teeth on large gear rings

1979 ◽  
Vol 22 (3) ◽  
pp. 340-341
Author(s):  
V. P. Pozdnyakov ◽  
L. M. Shereshevskii
Keyword(s):  
Portable Instrument ◽  
Large Gear
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