Cutting tool feed drive of wafer background milling machine

The paper describes the process of designing the cutting tool feed drive of a special metalworking machine, which due to the circuit solution and automatic control system will increase the productivity of processing one cell of wafer background on sheet material up to 10–15 seconds. On the basis of the analysis of the technology of milling of a given regular pattern of wafer background and peculiarities of the equipment operation it proposed to replace the traditional ball bearing gear in the cutting tool feed drive with a flat combined crank-slide mechanism. Geometrical parameters of the lever transmission mechanism calculated in accordance with the known dimensions of the regular cell pattern and the recommended value of the angle of motion transmission. The analysis of kinematic and power characteristics of the lever mechanism allowed to justify the technical characteristics of the electric motor. In order to realize the required trapezoidal law of the output link speed change, the inverse problem of kinematics solved, numerical values of the instantaneous angular velocity of the input crank and pulse control signals to the servomotor obtained.

1. Kaluga E. S. Ot samoletov k raketam i kosmicheskim korablyam [From aeroplanes to rockets and spaceships]. Moscow, 2001. 232 p. ISBN 5-88821-041-2. (In Russ.).

2. Lizin V. T., Pyatkin V. A. Proyektirovaniye tonkostennykh konstruktsiy [Design of Thin-Walled Structures]. Moscow, 1976. 408 p. (In Russ.).

3. Sabir R., Khan A. A., Hasham H. J. [et al.]. A survey of recent Developments in Optimization of Iso-Grid Cylinders // Journal of Space Technology. 2015. Vol. 5, no. 1. P. 103–115. (In Engl.).

4. Krivonos E. V. Issledovaniye deformatsii obechayki s vafel′nym podkrepleniyem pri val′tsevanii i razrabotka metoda kompensatsii otkloneniy formy [Investigation of deformation of shell with waffle reinforcement during rolling and development of method for compensation of deviations forms] // Omskiy Nauchnyy Vestnik. Ser. Aviatsionno-Raketnoye i Energeticheskoye Mashinostroyeniye. Omsk Scientific Bulletin. Series AviationRocket and Power Engineering. 2020. Vol. 4, no 4. P. 90–98. DOI: 10.25206/2588-0373-2020-4-4-90-98. EDN: AKTZXB. (In Russ.).

5. Danchenko V. G., Shevtsov E. I., Gusev V. V. Sposob optimizatsii massy lokal′no nagruzhennykh otsekov raket vafel′noy konstruktsii [Method of mass optimisation of locally loaded rocket compartments of waffle design] // Kosmicheskaya tekhnika. Raketnoye vooruzheniye. Space Technology. Rocket Armament. 2017. No. 2. P. 131–136. (In Russ.).

6. Batrutdinov R. G., Sysoyev S. K. Tekhnologiya izgotovleniya vafel′nogo fona v obechaykakh letatel′nykh apparatov [Technology of manufacturing waffle background in aircraft shells] // Aktual′nyye problemy aviatsii i kosmonavtiki. Actual Problems of Aviation and Cosmonautics. 2011. Vol. 1, no 7. P. 7–8. EDN: TAOUWT. (In Russ.).

7. Mikhryutin V. V., Sherstobitov M. A. Metody mekhanicheskoy obrabotki listovykh obshivok planera samoletov [Methods of machining of aircraft airframe sheet skins] // Vestnik RGATA imeni P. A. Solov′yeva. Bulletin of P. A. Solovyov RSATU. 2012. No. 2. P. 279–284. EDN: PPMNXB. (In Russ.).

8. Zaytsev A. M., Shachnev S. Yu., Grubyy S. V. Optimizatsiya rezhimov rezaniya pri frezerovanii karmanov obechayki s vafel′noy konstruktsiyey [Optimizing maсhining parameters for milling pockets in waffle-grid shell structures] // Kosmicheskaya tekhnika i tekhnologii. Space Engineering and Technology. 2020. No. 3. P. 14–23. DOI: 10.33950/spacetech-2308-7625-2020-3-14-23. (In Russ.).

9. Jalili N., Wagner J., Dadfarnia M. A piezoelectric driven ratchet actuator mechanism with application to automotive engine valves // Mechatronics. 2003. Vol. 13, no. 8. DOI: 10.1016/S0957-4158(03)00009-6. (In Engl.).

10. Zheng E., Zhou E. X. Modeling and simulation of flexible slider-crank mechanism with clearance for a closed high speed press system // Mechanism and Machine Theory. 2014. Vol. 74. P. 10–30. DOI: 10.1016/j.mechmachtheory.2013.11.015. (In Engl.).

11. Chen Y., Sun Y., Don Y. Investigations on the dynamic characteristics of a planar slider-crank mechanism for a highspeed press system that considers joint clearance // Mechanism and Machine Theory. 2017. Vol. 31, no. 1. P. 75–85. DOI: 10.1007/s12206-016-1209-z. (In Engl.).

12. Koser K. A slider crank mechanism based robot arm performance and dynamic analysis // Mechanism and Machine Theory. 2004. Vol. 39, no. 2. P. 169–182. DOI: 10.1016/S0094-114X(03)00112-5. (In Engl.).

13. Dvornikov L. T., Bol′shakov N. S. Teoriya krivoshipnopolzunnykh mekhanizmov [Theory of crank-slide mechanisms]. Novokuznetsk, 2008. 138 p. ISBN 978-5-8441-0282-0. (In Russ.).

14. Belov I. V., Semenov D. V., Belov A. A. Krivoshipnopolzunnyy mekhanizm s dvumya shatunami [Crank-slide mechanism with three connecting rods] // Original′nyye issledovaniya. Original Research. 2023. Vol. 13, no. 8. P. 20–27. (In Russ.).

15. Gebel E. S., Samsonov V. A. Osobennosti bifurkatsiy v ploskikh chetyrekhzvennykh mekhanizmakh [Features of bifurcations in planar four-link mechanisms] // Vos′myye Okunevskiye chteniya. The Eighth Okunev Readings. Saint Petersburg, 2013. P. 109–112. (In Russ.).