GM-14 ESTIMATION OF REAL MACHINE SETTING ON HELIXFORM HYPOID GEAR CUTTING(GEAR MANUFACTURING)

2001 ◽  
Vol I.01.202 (0) ◽  
pp. 381-386 ◽  
Author(s):  
Hirokazu MICHIWAKI ◽  
Hisashi TAMURA ◽  
Kazumasa KAWASAKI
Keyword(s):  
Hypoid Gear ◽  
Gear Cutting ◽  
Gear Manufacturing ◽  
Machine Setting ◽  
Real Machine

Cutter Interchangeability for Spiral-Bevel and Hypoid Gear Manufacturing

2003 ◽  
Author(s):  
Claude Gosselin ◽  
Jack Masseth ◽  
Wei Liang
Keyword(s):  
Test Case ◽  
Hypoid Gear ◽  
Hypoid Gears ◽  
Manufacturing Operations ◽  
Before And After ◽  
Gear Manufacturing ◽  
Spiral Bevel ◽  
Tooth Flank ◽  
Tooth Flank Surface Topography ◽  
Flank Surface

In the manufacturing of spiral-bevel and hypoid gears, circular cutter dimensions are usually based on the desired performance of a gear set. In large manufacturing operations, where several hundred gear geometries may have been cut over the years, the necessary cutter inventory may become quite large since the cutter diameters will differ from one geometry to another, which results in used storage space and associated costs in purchasing and maintaining the cutter parts. Interchangeability of cutters is therefore of significant interest to reduce cost while maintaining approved tooth geometries. An algorithm is presented which allows the use of a different cutter, either in diameter and/or pressure angle, to obtain the same tooth flank surface topography. A test case is presented to illustrate the usefulness of the method: the OB cutter diameter of an hypoid pinion is changed from 8.9500" to 9.1000". CMM results and the comparison of the bearing patterns before and after change show excellent correlation, and indicate that the new pinion can be used in place of the original pinion without performance or quality problems. Significant cost reductions may be obtained with the application of the method.

Optimization of Pinion Roughing of Spiral Bevel and Hypoid Gear

2006 ◽  
Vol 220 (4) ◽  
pp. 483-488 ◽  
Author(s):  
J-G Li ◽  
S-M Mao ◽  
J-L He ◽  
X-T Wu
Keyword(s):  
Complex Shape ◽  
Bending Strength ◽  
Bending Stress ◽  
Hypoid Gear ◽  
Blade Profile ◽  
Hypoid Gears ◽  
Cutter Life ◽  
Gear Manufacturing ◽  
Heavy Truck ◽  
Spiral Bevel

Roughing plays a very important role in spiral bevel and hypoid gear manufacturing. The roughing machine settings and cutter blade profile are optimized in this article on the basis of three considerations: the transition between the roughing root and the finishing fillet is smoothened, which causes the gear to obtain minimum possible bending stress and maximum bending strength; the finishing stock is distributed evenly to improve the residual stress, which causes the distortion of pinion during the process of heat treatment; and the working load of finishing cutter tip is minimized, and the maximum cutter life is obtained. The complex shape method is successfully used to optimize the roughing machine settings and cutter blade profile. The advantages and benefits of the newly developed roughing process are verified in the manufacture of hypoid gears for a heavy truck axle in a Chinese vehicle company.

scholarly journals Design of Angular Hypoid Gear. 2nd Report. Gear Cutting and Design Dimensions.

1991 ◽  
Vol 57 (544) ◽  
pp. 3941-3946
Author(s):  
Norio ITO ◽  
Koichi TAKAHASHI ◽  
Shinobu TOYAMA
Keyword(s):  
Hypoid Gear ◽  
Gear Cutting

The Ultimate Motion Graph

1999 ◽  
Vol 122 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Hermann J. Stadtfeld ◽  
Uwe Gaiser
Keyword(s):  
Dynamic Strength ◽  
Physical Effect ◽  
Hypoid Gear ◽  
Manufacturing Plants ◽  
Gear Noise ◽  
Tooth Surfaces ◽  
Gear Manufacturing ◽  
Manufacturing Tolerances ◽  
Gear Geometry ◽  
Gear Drives

The innovation was to develop a gear geometry that reduces or eliminates gear noise and increases the strength of gears. Gear noise is a common problem in all bevel and hypoid gear drives. A variety of expensive gear geometry optimizations are applied daily in all hypoid gear manufacturing plants, to reduce gear noise. In many cases those efforts have little success. Additional expensive finishing operations (lapping after the grinding) are applied to achieve the goal of quiet and stong gear sets. The ultimate motion graph is a concept for modulating the tooth surfaces that uses a physical effect to cancel out the dynamic disturbances that are naturally generated by all up-to-date known kind of gears. The ultimate motion graph also eliminates the sensitivity of gears against deflection under load or displacements because of manufacturing tolerances. Lower dynamic disturbances will also increase the dynamic strength. [S1050-0472(00)00203-8]

Methods of Synthesis and Analysis for Hypoid Gear-Drives of “Formate” and “Helixform”—Part 2. Machine Setting Calculations for the Pinions of Formate and Helixform Gears

1981 ◽  
Vol 103 (1) ◽  
pp. 89-101 ◽  
Author(s):  
F. L. Litvin ◽  
Y. Gutman
Keyword(s):  
Synthesis Method ◽  
Hypoid Gear ◽  
Local Synthesis ◽  
Gear Drive ◽  
Methods Of Synthesis ◽  
Machine Setting ◽  
Gear Drives

The second article part is devoted to the calculation of machine settings for Hypoid gear-drive pinions being generated by “Formate” and “Helixform” cutting methods. The solution is based on a local synthesis method by following assumptions: (1) the member-gear surfaceΣ2 is given (the surface Σ2 becomes known after the determination of its machine settings, see article part 1): (2) the being obtained machine settings for the pinion must guarantee: (a) that the member-gear surface Σ2 will be in contact with the pinion surface Σ1 at a choosen point M, (b) that at M and in the vicinity of M prescribed conditions of meshing will be provided.

The Adaptation of CNC Helical Guide Technology to the Gear Shaping Process

2003 ◽  
Author(s):  
John M. Lange
Keyword(s):  
Real Life ◽  
Manufacturing Processes ◽  
Gear Cutting ◽  
Shaping Process ◽  
Gear Manufacturing ◽  
Grinding Machines ◽  
Gear Shaping ◽  
Guide Principle

The Gear shaping process, like all gear manufacturing processes, has been enhanced by the application of CNC Technology. In the case of the gear shaping process the “partial” application of CNC Technology first occurred in 1982. While virtually all gear cutting and grinding machines have had their axes of motions converted to CNC, the development of a CNC electronic helical guide for the gear shaping process was delayed for technological reasons. The following questions will be discussed and answered: • Why is a helical guide necessary in the gear shaping process? • What had delayed CNC technology from being applied to the helical guide principle in the gear shaping process? • How has the addition of the electronic guide CNC Technology impacted the gear shaping process? • Have lead quality and productivity rates been aversely affected by the addition of the electronic guide feature? • How might this increase in flexibility, by using an electronic guide in the shaping process, be applied to real life applications?

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