Gear shaping

About: Gear shaping is a research topic. Over the lifetime, 598 publications have been published within this topic receiving 1880 citations.

Skewed tooth spiral agle regulating mechanism for gear shaper

Abstract: The utility model discloses a skewed tooth spiral angle regulating mechanism for gear shaper, which belongs to the cylindrical gear machine tool manufacturing field. The skewed tooth spiral angle regulating mechanism for gear shaper is composed of two suites of crank sliding block mechanisms, two suites of lever sliding block mechanisms, and a suite of spiral angle combination mechanism; the utility model can be used to reform a plurality of common gear shaping machines only able to skew a fixed spiral angle into a universal helical gear shaping machines or a newly designed new style universal helical gear shaping machine able to skew various spiral angles of any spiral directions. The adjustment of the skewed tooth spiral angles is realized by putting the eccentric positions of the two crank sliding blocks. The utility model has the advantages of convenient adjustment and high precision; exact spiral motion can be ensured, and the gear shaping difficulty of an inner gear of small diameter and big spiral angles can be solved; the utility model is suitable for individually producing or multiple varieties small batch producing various helical cylinder gears.

Machining method for rack tooth profile of circulating ball type variable ratio diverter gear pair

Abstract: The invention discloses a machining method for a rack tooth profile of a circulating ball type variable ratio diverter gear pair. The machining method is characterized in that an involute gear sector transmitted by a variable ratio rack is replaced with a slotting cutter with design parameters being the same with the basic design parameters of the gear sector, the slotting cutter is adopted to simulate the movement of the involute gear sector, and the variable ratio rack tooth profile meeting the design requirement is machined in a generating manner. The machining method mainly comprises the first step of calculation of basic design parameters, the second step of design of the slotting cutter, the third step of establishment of a generating motion equation, the fourth step of establishment of a radial feeding motion equation of the slotting cutter, the fifth step of establishment of an axial feeding motion equation of the slotting cutter, the sixth step of establishment of a gear shaping machining variable ratio rack tooth profile mathematical model, and the seventh step of generating manufacturing of the variable ratio rack tooth profile through the slotting cutter. According to the machining method, the calculation process is simple, gear shaping machining is adopted, and the overall efficiency of designing and machining can be improved.

Gear shaping method by nc lathe

Abstract: PROBLEM TO BE SOLVED: To machine an inner gear especially and put together the processes by adding a gear shaping function by a pinion cutter to the function of compound machining NC lathe. SOLUTION: A chuck 3 is fitted to the tip of a main spindle 2 for controlling the rotary angle of the main spindle stand 1 of a compound NC lathe and a work W is fixed to this chuck 3. A pinion cutter 11 is mounted to the rotary tool installation shaft 12 of the tool rest turret 5 of the tool rest 4 which can move and position to Z axis and X axis direction. The servo motor 29 by which the rotary tool installation shaft 12 is driven and the main spindle motor for driving the main spindle 2 are synchronizingly rotated and controlled with a certain rate by NC lathe. While synchronizingly rotating the work W installed on the main spindle 2 with a certain rate, at the same time, by reciprocating the rotary tool installation shaft 12 mounted the pinion cutter 11 to the Z axis direction, a gear shaping is carried out.

Simulation of Generation Process for Asymmetric Involute Gear Tooth Shape with and without Profile Correction

Abstract: In order to achieve any design study on a gear tooth or to carry out any type of analysis on a complete gear drive, the first step is the representation of the actual form of this tooth under consideration. In this work, a mathematical simulation of generation process for the symmetric involute gear teeth shapes based on the principle of the gear shaping process with a rack-shaped cutter has been developed to take into account the effect of asymmetric tooth profiles and the use of profile correction on each side of tooth with different design parameters for each side of tooth. As a result of this work, a computer program based on this mathematical simulation has been built to represent graphically step-by-step the actual form of symmetric and asymmetric gear teeth shapes with and without profile correction for different gear design parameters. Keywords: Involute Gear Teeth, Symmetric, Asymmetric, Profile Correction, Mathematical Simulation, Generation Process.

The Mathematical Model and Tooth Surface Deviations of Internal Conical Gears

Abstract: The internal conical gear investigated in this paper is generated by a shaping machine by inclining the shaper-arbor with respect to the gear axis. Applying the theory of gear meshing and differential geometry, the mathematical model of the internal conical gear is developed according to the gear shaping mechanism. Due to the tapered tooth thickness, the backlash of an internal conical gear pair can be easily controlled by axial adjustments without affecting its center distance. Besides, crowning effect can be observed on the generated tooth surface, which makes the bearing contact of an internal conical gear pair exhibits a point contact. The investigation shows that the tooth surface varies with the number of teeth of the shaper. Computer graphs of the internal conical gear are presented according to the developed gear mathematical model, and the tooth surface deviations due to the number of teeth of the shaper are also investigated.Copyright © 2005 by ASME