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Theta BSM Input Shaft Bolt change

Theta BSM Input Shaft Bolt change. 2012. 9. 17. Theta MPI BSM (Asan 공장 사양 ). Torque only measurement. 2. Results Summary. Result Plots - GDI, Clamp Load. Result Plots - MPI, Clamp Load. M10x1.25P (Angle vs Clamping Force). YS = 54kN. Target Clamp load = 46kN. 6.

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Theta BSM Input Shaft Bolt change

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  1. Theta BSM Input Shaft Bolt change 2012. 9. 17.

  2. Theta MPI BSM (Asan 공장 사양)

  3. Torque only measurement 2

  4. Results Summary

  5. Result Plots - GDI, Clamp Load

  6. Result Plots - MPI, Clamp Load

  7. M10x1.25P (Angle vs Clamping Force) YS = 54kN Target Clamp load = 46kN 6

  8. Theta IP Shaft bolt change – M10 bolt results with GDI sprocket • MD proposed 30Nm + 20deg (+/-2deg) for M10 bolt change as a potential production joint. • Target clamp load of 46kN looks to be acceptable for the bolt strength as 85% of yield strength. • Peak torque of 64.2Nm will give us a safety factor of 1.5 compared to maximum torque observed of 42Nm. 7

  9. Input Shaft Clearance increase Theta input shaft clearance study • MD found input shaft journal growth by 7~8㎛ after the bolt joint. Actually this was reported to HMC in the early of the development. • From this reason, MD has done the clearance study in order to compensate the OD increase. • Current clearance of input shaft • - Front JNL : 0.020 ~ 0.056 • - Rear JNL : 0.012 ~ 0.052 • New clearance with smaller journals • - Front JNL : 0.030 ~ 0.066 • - Rear JNL : 0.022 ~ 0.062 • The new clearance should be verified through some feasibility tests. 8

  10. DVP&R 9

  11. Theta MPI BSM (Asan 공장 사양) 10

  12. Theta MPI BSM (Asan 공장 사양) 11

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