Machining of Spur Gears Using a Special Milling Cutter

Abstract

Spur gears have a wide application in the machine-building industry. Machining process primarily selected for these gears is hobbing method with modular hobs, or with Fellows cutters. Other methods which can be applied are profiling using the pull broaches, while the finishing can be done by gear shaving or grinding by the Maag, Niles or Reishauer methods. Moreover, in small (or unit) production, they may be formed using disc-or finger-type modular cutters. The article presents a method for cutting spur gears using a disc-type mill with a variable cutting plate profile. The influence of the number of blades of the presented milling cutter on the accuracy of the worked tooth profile was investigated.

Geometrical Analysis of Composite Hobs

“…In equations (9) and (11), the points for the right-hand and the left-hand hob profile side, respectively, should be taken into account.…”

“…The development of technology and materials science has contributed to the emergence of hobs made wholly of sintered carbides (small modules) and of composite hob designs with cutting inserts made of super-hard materials (such as sintered carbides, ceramics, borazon, diamond) embedded in a body made of high-speed or tool steels (Figs. 2, 3), presented in [2,8,[9][10][11][12]. Jaster, [7], investigated the use of state-of-the-art universal multi-purpose multi-axis CNC machine tools in the manufacture of gear wheels.…”

Diagnosis of the Operational Gear Wheel Wear

“…In the process of transmission gear manufacture it is essential to optimally select the production method. Gear wheels are machined mainly by the hobbing method using modular hobs, which is the most efficient method, but also with pull broaches, Fellows cutters or dedicated milling cutters [1]. Quite often, modification to the profile of a gear results in an improvement in its operating properties [2,3,4,5].…”

The Use of New Technology to Improve The Quality of Production on a CNC Machine Tool

“…The rest of the material is removed during machining in the form of chips. Machining is one of the methods of shaping objects, thanks to it you can obtain objects with very complex shapes and small surface roughness while maintaining very high dimensional accuracy from technical drawings (Olszak, 2017;Boral et al, 2018). Turning on computer controlled lathes is much cheaper, faster and much more precise than when the lathe is controlled by a Turner with many years of experience (Stryczek and Pytlak, 2018).…”