Abstract
Compared to the conventional gear hobbing fixtures, split fixture can effectively reduce job set-up time during the manufacturing process. This paper investigates the behaviour and analysis of split fixture under varying static loading conditions. Design of the part was established by considering the ability of the split fixture to carry jobs of various diameters. In order to validate the design, Static structural analysis was carried out on two positional configurations of the split fixture. A load of 1 ton was applied on the resting face of the fixture to simulate the effect of holding the job. The analysis included a study of the Stress, Deformations, and Modal analysis at different resonating frequencies to check for failure of design. By applying varying loads similar to practical conditions, it was observed that the design successfully withstood the applied forces without failure and a factor of safety of 142 was achieved in a critical loading case. Investigating the effect of dynamic loads on the Split Fixture and including auxiliary assembly components in design analysis.
Highlights
Gear hobbing machine is used for machining and production of an external tooth form developed uniformly about a rotating center [1]
The current design is derived from the combination of the fixture design and functionality of the currently used in gear hobbing machine which is widely used individually for different sized gears to be hobbed
The Model 1 and Model 2 with the centre distance of 350 mm and centre distance of 550 mm were selected based on the size of the gear to be hobbed
Summary
Gear hobbing machine is used for machining and production of an external tooth form developed uniformly about a rotating center [1]. It is a relatively advanced form of machining. Fixtures are generally designed for a specific operation and a given work piece individually. This increases the set up time, adding to the labour cost and wasting the company’s money. Split fixture has a rotating screw which ensures the jaw expansion, reducing the setup time for the jobs of different diameter [2]
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