動力伝達装置に組込まれた接着軸継手の耐久性

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The principles of adhesively bonded coaxial assemblies in power transmission gears provide some interesting design possibilities for example, in the attachment of gears to shafts, the savings in machining and material costs can be identified. To evaluate the durability of adhesively bonded coaxial joints applied in power transmission gears, a power circulating durability testing machine was constructed. Using this testing machine, we experimentally investigated the effect of applied mean torque, overlap length and rotational speed on the durability of joints. Static torsional tests were also conducted, and the relationship between durability in the testing machine and static torsional strength was discussed. Furthermore, the stress distribution in joints of this type was analyzed with the finite-element method to investigate the effect of stress distribution within the adhesive layer on the torsional strength and durability of the joint. The main results obtained are summarized as follows. (1) With increase in lap length, the static torsional strength increased. However, the maximum stress in the adhesive layer was almost constant irrespective of the lap length. (2) Durability test data obtained from different lap lengths can be normalized by utilizing the static torsional strength of the joint. (3) Applied torque with constant failure time decreases with increase in rotational speed. This phenomenon is apparently due to fatigue damage to the adhesive layer caused by vibration during rotation.
一般社団法人日本機械学会の論文
1993-07-25

動力伝達装置に組込まれた接着軸継手の耐久性

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