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| 1 | Three-dimensional Modeling for Predicting the Vibration Modes of Twin Ball Screw Driving Table显示文摘As a redundant drive mechanism,twin ball screw feed system has the advantage of high stiffness and little yaw vibration in the feeding process,while leads to increased difficulty with vibration characteristics analysis and structure optimization.Only low-dimensional structure and dynamics parameters are considered in the existing research,the complete and effective model for predicting the table’s vibrations is lacked.A three-dimensional(3D)mechanical model of twin ball screw driving table is proposed.In order to predict the vibration modes of the table quantitatively,an analytical formulation following a comprehensive approach is developed,where the drive system is modeled as a lumped mass-spring system,and the Lagrangian method is used to obtain the table’s independent and coupled axial,yaw,and pitch vibration modes.The frequency variation of each mode is studied for different heights of the center of gravity,nut positions and table masses by numerical simulations.Modal experiment is carried out on the Z-axis feed table of the horizontal machining center MCH63.The results show that for each mode,the error between the estimated and the measured frequencies is less than 13%.The independent and coupled vibration modes are in accordance with the experimental results,respectively.The proposed work can serve a better understanding of the table’s dynamics and be beneficial for optimizing the structure parameters of twin ball screw drive system in the design stage. | WANG Renche ZHAO Tong YE Peiqing LIU Yan | 2014 | Chinese Journal of Mechanical Engineering2014，27，1： | 5 |
| 2 | Maternal antibody at delivery protects neonates from early onset group B streptococcal disease显示文摘 | Baker CJ Carey VJ Rench MA | 2014 | J infect Dis2014，209，5： | 1 |
| 3 | Mixed problem with integral conditions for a high order mixed type partial differential equation显示文摘 | RENCHE M MARHOUNE A L | 2003 | J Appl Math Stoch Anal2003，16，： | 1 |
| 4 | HRM high-reduction rolling machine 显示文摘 | Recalcati C Ventura C Rench W | 1990 | Wire Ind1990，57，673： | 1 |
| 5 | Mobile phones heat shock proteins and cancer显示文摘 | RENCH P W PENNY R LAURENCE J A | 2001 | Differenti- ation2001，67，： | 1 |
| 6 | Prevalence of pertussis antibodies in maternal delivery, cord and infant serum 显示文摘 | CMary Healy Flor M Munoz Marcia A Rench | 2004 | J Infect Dis2004，190，2： | 1 |
| 7 | Invasive disease due to group B Streptococcus in pregnant women and neonates from diverse population groups 显示文摘 | ZALEZNIK D F RENCH M A HILLIER S | 2000 | Clin Infect Dis2000，30，2： | 1 |
| 8 | Changing epidemiology of group B streptococcal colonization显示文摘 | Hickman ME Rench MA Ferrieri P | 1999 | Pediatrics1999，104，21： | 1 |
| 9 | Immunization of pregnant women with group B streptococcal Type Ⅲ capsular polysaccharide-Tetanus toxoid conjugate vaccine显示文摘 | Baker CJ Rench MA Mclnnes P | 2003 | Vaccine2003，21，24： | 1 |
| 10 | Use of Type V group B streptococcal conjugate vaccine in adults 65-85 years old显示文摘 | Palazzi DL Rench MA Edwards MS | 2004 | J Infect Dis2004，190，3： | 1 |
| 11 | Safety and Immunogenicity of a Bivalent Group B Streptococcal Conjugate Vaccine for Serotypes Ⅱ and Ⅲ显示文摘 | Baker CJ Rench MA Fernandez M | 2003 | J Infect Dis2003，188，1： | 1 |
| 12 | Class specificity of naturally acquired and vaccine-induced antibody to type Ⅲ group B streptococcal capsular polysaccharide:determination with a radioimmunoprecipitin assay显示文摘 | Edwards MS Fuselier PA Rench MA | | 0，，02： | 1 |
| 13 | Evaluation of the impact of a pertussis cocooning program on infant pertussis infection 显示文摘 | Healy CM Rench MA Wootton SH | 2015 | Pediatr Infect Dis J2015，34，1： | 1 |
| 14 | Substrate specifity of Pullulanase显示文摘 | Abduliah A M Rench F D | 1970 | ArchBiochem Biophvs1970，137，： | 1 |
| 15 | Early outcomes of group B streptococcal meningitis in the 21st century显示文摘 | Levent F Baker C J Rench MA | 2010 | Pediatr Infect Dis J2010，29，： | 1 |
| 16 | Magnesium:nature's physiologic calcium blocker显示文摘 | Iseri LT Rench JH | 1984 | Am Heart J1984，108，1： | 1 |
| 17 | Detection of Group B Streptoc occas antigen in body fluid by a l atex-conplend monoclonal antibody assay显示文摘 | Rench MA Metzger TG Baker CT | 1984 | J Clin Microbiol1984，20，5： | 1 |
| 18 | Identification of amino acid sequence from the laminin A chain that stimulates metastasis and collagense显示文摘 | Kanemoco T Rench R Royce | 1990 | Inproduction Proc Acao Sci USA1990，87，： | 1 |
| 19 | Long-term sequelae of group B streptococcal meningitis in infants 显示文摘 | Edwards MS Rench MA | 1985 | Pediatrics1985，106，： | 1 |
| 20 | Substrate specificity of Pullulanase 显示文摘 | ABDULLAH A M RENCH F D | 1970 | Arch Biochem Biophys1970，137，： | 1 |
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