طراﺣﯽ، ﺗﺤﻠﯿﻞ و ﺳﺎﺧﺖ اﻓﺰاﯾﺸﯽ ﯾﮏ ﺟﻔﺖ ﭼﺮﺧﺪﻧﺪه ﻏﯿﺮداﯾﺮوي ﮐﺎﻫﻨﺪه ﺑﻪ ﮐﻤﮏ ﮐﺎﻣﭙﯿﻮﺗﺮ

Computer aided design, engineering and additive manufacturing of a pair of non-circular gear reducers

در اﯾﻦ ﻣﻘﺎﻟﻪ ﺑﻪ ﻃﺮاﺣﯽ و ﺳﺎﺧﺖ ﯾﮏ ﺟﻔﺖ ﭼﺮﺧﺪﻧﺪه ﻏﯿﺮداﯾﺮهاي ﮐﺎﻫﻨﺪه دور، ﻣﺘﺸﮑﻞ از ﯾﮏ ﭼﺮﺧﺪﻧﺪه ﻣﺜﻠﺜﯽ ﻣﺤﺮك و ﯾﮏ ﭼﺮﺧﺪﻧﺪه ﭘﻨﺞﭘَﺮ ﻣﺘﺤﺮك ﭘﺮداﺧﺘﻪ ﺷﺪه اﺳﺖ. ﺑﺎ ﺗﻌﯿﯿﻦ ﭘﺎراﻣﺘﺮﻫﺎي ﻃﺮاﺣﯽ، ﻣﺪل دو ﺑﻌﺪي و ﺳﻪ ﺑﻌﺪي ﻫﺮ دو ﭼﺮﺧﺪﻧﺪه ﺑﺎ اﺳﺘﻔﺎده از ﻧﺮم اﻓﺰار ﺗﺮﺳﯿﻢ ﮔﺮدﯾﺪ. ﺳﭙﺲ ﻧﺤﻮه ﺣﺮﮐﺖ ﭼﺮﺧﺪﻧﺪه ﻫﺎ در ﻧﺮم اﻓﺰار ﺷﺒﯿﻪ ﺳﺎزي و ﺗﺤﻠﯿﻞ ﺷﺪه و ﺑﺎ ﺗﺄﯾﯿﺪ ﻧﺘﺎﯾﺞ ﻧﻤﻮدارﻫﺎي ﺳﺮﻋﺖ و ﺷﺘﺎب زاوﯾﻪ اي، ﻫﺮ دو ﭼﺮﺧﺪﻧﺪه ﺗﻮﺳﻂ روش ﺳﺎﺧﺖ اﻓﺰاﯾﺸﯽ ﺗﻮﻟﯿﺪ ﺷﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن ﻣﯽ دﻫﺪ ﮐﻪ روش ﻃﺮاﺣﯽ اراﺋﻪ ﺷﺪه در اﯾﻦ ﻣﻘﺎﻟﻪ ﺻﺤﺖ و دﻗﺖ ﻋﻤﻠﮑﺮدي ﭼﺮﺧﺪﻧﺪه ﻫﺎي ﻏﯿﺮداﯾﺮوي را ﺗﻀﻤﯿﻦ ﻣﯽ ﻧﻤﺎﯾﺪ. ﻣﻮﻧﺘﺎژ ﭼﺮﺧﺪﻧﺪه ﻫﺎ ﺑﻪ درﺳﺘﯽ اﻧﺠﺎم ﺷﺪه و ﺣﺮﮐﺖ آﻧﻬﺎ از دﻗﺖ ﻣﻨﺎﺳﺒﯽ ﺑﺮﺧﻮردار ﻣﯽ ﺑﺎﺷﺪ. ﻫﻤﭽﻨﯿﻦ ﺗﻮﻟﯿﺪ ﭼﺮﺧﺪﻧﺪه ﻫﺎ ﺗﻮﺳﻂ روش ﺳﺎﺧﺖ اﻓﺰاﯾﺸﯽ ﺑﺎ اﻧﺘﺨﺎب ﭘﺎراﻣﺘﺮﻫﺎي ورودي دﻗﯿﻖ ﻣﻨﺠﺮ ﺑﻪ دﺳﺘﯿﺎﺑﯽ ﺑﻪ ﻣﺤﺪوده ﺗﻠﺮاﻧﺴﯽ ﻣﻌﺎدل 0/02 ﻣﯿﻠﯿﻤﺘﺮ ﺷﺪه و اﺛﺮي از ﭘﻠﻪ اي ﺷﺪن در اﻣﺘﺪاد ﺿﺨﺎﻣﺘﯽ در ﻧﻤﻮﻧﻪ ﻫﺎي ﻓﯿﺰﯾﮑﯽ رؤﯾﺖ ﻧﮕﺮدﯾﺪ.

In this paper, a pair of non-circular gear reducers consisting of a triangular driver gear and a pentangle driving gear was designed and fabricated. By determining the design parameters, two-dimensional and three-dimensional models of both gears were drawn using the software. Then, the movement of the gears was simulated and analyzed in the software. With the confirmation of the angular velocity and angular acceleration results, both gears were manufactured by the additive manufacturing process. The results revealed that the design method presented in this paper guarantees the functional accuracy of non-circular gears. The gears were assembled correctly and their movement was correct. Moreover, by selecting precise input parameters the production of non-circular gears using the additive manufacturing process has led to the achievement of a tolerance range ±0.02 mm and has prevented them from stepping along the thickness.