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2009-04-01 10:43:35
heyahppy
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º¼½ºÅ©·ù ¼±Á¤ °è»ê¹ý ¾Æ½Ã´Â ºÐ °è½Ã¸é ¹«¾ùÀ̵ç ÁÁÀ¸´Ï ´äº¯ Á» ºÎŹµå¸³´Ï´Ù.
 
´Ü...Ä«´Ù·Î±× ã¾Æº¸¶ó´Â ¸»¾¸¸¸ ÇÏÁö ¸»¾ÆÁÖ¼¼È¿.¤Ì¤Ì
Ball Screw ¼±Á¤ °è»ê-Æß±Û Ãßõ : 0
machine   2009-04-01 10:45:38
Ball Screw ¼±Á¤
 
   1. leadÀÇ ¼±Á¤
   ±¸µ¿¸ðÅÍÀÇ È¸Àü¼ö 750rpm, ÃÖ°í¼Óµµ 0.06m/ÀÏ ¶§
    lead(L)=0.06*60*1000/750 = 5mm
 
   2. ³ª»çÃà°æÀÇ ¼±Á¤
   lead°ªÀÌ 5mmÀÌ¸ç °¡°ÝÀÌ Àú·ÅÇÑ ÀüÁ¶º¼³ª»çÁß Áö¸§ÀÌ 15ÀÎ bnf-1505-2.5¸¦ ¼±Á¤ÇÏ¿´´Ù.
 
   3. Çã¿ë Ãà ¹æÇâÇÏÁßÀÇ °ËÅä
   ÃÖ´ëÃàÇÏÁßÀÇ »êÃâ
   °¡¼Óµµ a=Vmax/t=0.084m/s
   »ó½Â°¡¼Ó½Ã : Fa1 = (m1 + m2)*g + f + (m1 + m2) * a = 180N
   »ó½Âµî¼Ó½Ã : Fa2 = (m1 + m2)*g + f = 167N
   °­½Â°¨¼Ó½Ã : Fa3 = (m1 + m2)*g + f - (m1 + m2) * a = 153.4N
   ÇÏ°­»ó¼Ó½Ã : Fa4 = (m1 + m2)*g - f - (m1 + m2) * a = 113.4N
   ÇÏ°­µî¼Ó½Ã : Fa5 = (m1 + m2)*g - f = 127N
   ÇÏ°­°¨¼Ó½Ã : Fa6 = (m1 + m2)*g - f + (m1 + m2) * a = 140.6N
   À̻󿡼­ º¼³ª»ç¿¡ ÀÛ¿ëÇÏ´Â ÃÖ´ëÃà¹æÇâÇÏÁßÀº 180NÀÌ µÈ´Ù.
 
   4. ³ª»çÃàÀÇ Á±¼ÇÏÁß
   P1 = n * d©ù* 10©ù / L©÷= 26407N
   ³ª¼öÃàÀÇ Çã¿ëÀÎÀåÇÏÁß : P2 = ¥ò*¥ðd©÷/ 4 = 18100N
   µû¶ó¼­ ³ª»çÃàÀÇ Á±¼ ÇÏÁß, Çã¿ë¾ÐÃà ÀÎÀåÇÏÁßÀº ÃÖ´ë Ãà ¹æÇâ ÇÏÁß ÀÌ»óÀÌ µÇ±â ¶§¹®¿¡ »ç¿ë»óÀÇ ¹®Á¦°¡ ¾ø´Ù.
 
   5. Çã¿ëȸÀü¼öÀÇ °ËÅä
   Nmax = 0.06 * 60 * 1000 / 5 = 720rpm
   DNÀÇ ¼±Á¤ : DN = 70000/D = 4179.1rpm
   À§Çè¼Óµµ : N = ¥ë* d*10e7/L©÷ = 9320rpm
   À̻󿡼­ ³ª»çÃàÀÇ À§Çè¼Óµµ ¹× DNÄ¡¸¦ ¸¸Á·ÇϰԵȴÙ.
 
   6. ³ÊÆ®ÀÇ ¼±Á¤
   bnf 1605 -2.5 
   ±âº»Àü°ÝÇÏÁß Ca=7.5KN, Co=13.9KN
   Çã¿ë Ãà¹æÇâ ÇÏÁßÀÇ °ËÅä : °¨¼Ó, °¨¼Ó½Ã¿¡ Ãæ°ÝÇÏÁßÀÌ ÀÛ¿ëÇϹǷΠfs = 2·Î ¼±Á¤ÇÑ´Ù.
   fa=Co/fs = 27.8KN

   ºÎÇÏ ÃÖ´ë Ãà ¹æÇâÇÏÁß º¸´Ù. Çã¿ëÃà ¹æÇâ ÇÏÁßÀÌ Å©±â ¶§¹®¿¡ ¹®Á¦´Â ¾ø´Ù.
 
 
   7. ¼ö¸í°ËÅä
   ÁÖÇà°Å¸®ÀÇ »êÃâ
   ÃÖ°í¼Óµµ Vmax = 0.03m/s
   °¡¼Ó½Ã°£ t1 = 0.717
   °¨¼Ó½Ã°£ t1 = 0.717
   °¡¼Ó½Ã ÁÖÇà°Å¸® 21.51mm
   µî¼Ó½Ã ÁÖÇà°Å¸® 256.98mm
   °¨¼Ó½Ã ÁÖÇà°Å¸® 21.51mm
   Ãà¹æÇâ Æò±ÕÇÏÁß : ©ø¡î(Fa1©ø* L1+Fa2©ø* L2+Fa3©ø* L3+Fa4©ø* L4+Fa5©ø* L5+Fa6©ø* L6)/2Ls = 146.5N
   µ¿°ÝÀü°ÝÇÏÁß= 7400N ÇÏÁß°è¼ö = 1.2ÀÏ ¶§,
   Àü°Ý¼ö¸í L = (Ca/(fw*Fm))©ø*10e6 = 74.252*10e9
   ¸ÅºÐÆò±ÕȸÀü¼ö = 60/min
   ¼ö¸í½Ã°£ Lh = L/(60*Nm) = 20525h
 
   8. ȸÀüÅäÅ©ÀÇ °ËÃâ
   ¿ÜºÎÇÏÁßÀÇ ÀÇÇÑ ¸¶Âû Åä¿ÀÅ©
   »ó½Â°¡¼Ó½Ã : T1 = Fa1*L/(2 *¥ð*¥ç) = 159.76Nmm
   »ó½Â°¨¼Ó½Ã : T2 = Fa2*L/(2 *¥ð*¥ç) = 135.76Nmm
   »ó½Âµî¼Ó½Ã : T3 = Fa3*L/(2 *¥ð*¥ç) = 147.73Nmm
   ÇÏ°­°¨¼Ó½Ã : T4 = Fa4*L/(2 *¥ð*¥ç) = 100.32Nmm
   ÇÏ°­µî¼Ó½Ã : T5 = Fa5*L/(2 *¥ð*¥ç) = 124.38Nmm
   ÇÏ°­°¨¼Ó½Ã : T6 = Fa6*L/(2 *¥ð*¥ç) = 112.35Nmm
 
   9. °¡¼Ó¿¡ ÇÊ¿äÇÑ Åä¿ÀÅ©
   ´ÜÀ§±æÀÌ´ç ³ª»çÃàÀÇ °ü¼º¸ð¸àÆ® 3.9*10e-4Kg.cm©÷/mm
   ÀüÀå 500mmÀÇ ³ª»çÃàÀÇ °ü¼º¸ð¸àÆ®
   Js=3.9*10e-1*50 = Kg.mm©÷/mm 
   J(m1+m2)(L/2¥ð)*A©÷*10e-6+Js*A©÷ = 0.0000879
   °¢ °¡¼Óµµ
   ¥ø = 2¥ð*720/(60*0.714) = 105.55rad/s
   Jm¿¡ ÇÊ¿äÇÑ °ü¼º¸ð¸àÆ®
   Jm = J/c=0.0000177
   °¡¼Ó¿¡ ÇÊ¿äÇÑ Åä¿ÀÅ©´Â
   T7 = (J+Jm)*¥ø = 12.1N.mm
   ¡Ø À̻󿡼­ ÇÊ¿äÅä¿ÀÅ©
   »ó½Â°¡¼Ó½Ã : T1 + T7 = 170N
   »ó½Âµî¼Ó½Ã : T2 = 147.73N
   »ó½Â°¡¼Ó½Ã : T3 - T7 = 124.504N
   ÇÏ°­°¡¼Ó½Ã : T4 + T7 = 111.52N
   ÇÏ°­µî¼Ó½Ã : T5 = 112.35N
   ÇÏ°­°¨¼Ó½Ã : T6 - T7 = 102.25N
   µû¶ó¼­ ÃÖ´ëÇÊ¿äÅäÅ©´Â 171N.mm°¡µÈ´Ù.
   °ü¼º¸ð¸àÆ® J = 0.885*10e-4Kgm©÷°¡µÈ´Ù.
   À§¿¡¼­ ¸ðÅÍ ¸ÞÀÌÅÍ¿¡ µû¶ó ´Ù¸£Áö¸¸ Åë»ó ¸ðÅÍ¿¡ ÀÛ¿ëÇÏ´Â °ü¼º¸ð¸àÆ®ÀÇ 1/10ÀÌ»óÀÇ °ü¼º¸ð¸àÆ®¸¦
   ¸ðÅÍ°¡ °¡Áö°í ÀÖÀ» ÇÊ¿ä°¡ ÀÖ´Ù.
   µû¶ó¼­ 0.885*10-5Kg.m©÷ÀÌ»ó°¡Áö°í ÀÖ¾î¾ß ÇÑ´Ù.
   ¸ðÅÍ Ãâ·Â : T = 974200*H/750 = 30W

 

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