• 제목/요약/키워드: backlash

검색결과 209건 처리시간 0.034초

2-방향 카트리지 밸브 기반 로직회로에 의한 사출성형기의 형체력 제어 (Clamping force control of injection molding machine using 2-way cartridge valve based logic circuit)

  • 조승호
    • 드라이브 ㆍ 컨트롤
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    • 제13권2호
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    • pp.51-58
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    • 2016

  • The present study deals with the issue of clamping force control of an injection molding machine using 2-way cartridge valve based logic circuit. The operating principle for the cartridge valve is described with its construction and static opening behavior. Basic module circuits are designed first and analysed according to the basic functions. Then they are combined with a virtual design model for the clamping mechanism to simulate the control performance of the overall system. The backlash inherent in the mechanism is considered while evaluating the time-delay in the process of clamping force build-up. The effects of a couple of design parameters in backlash, i.e., interval and stiffness have been demonstrated in the time-domain.

  • https://doi.org/10.7839/ksfc.2016.13.2.051 인용 PDF KSCI

No-backlash characteristics analysis of a cycloidal ball planetary transmission under axial pre-tightening

  • Yang, Ronggang;Wang, Naige;Xiang, Jiawei
    • Structural Engineering and Mechanics
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    • 제81권4호
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    • pp.481-492
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    • 2022

  • Cycloidal ball planetary transmission (CBPT) has many applications as precision reducer, such as precision machinery and automation drive systems etc. The traditional analytical model of CBPT cannot accurately describe the change of the normal force of meshing points, and thus cannot describe the precise transmission process of meshing pairs. In the paper, a method for deriving the normal force equation is put forward by using the non-linear relationship between force and deformation in elastic mechanics. The two-point contact analytical models of all the meshing pairs are established to obtain the micro-displacement analytical model of CBPT under axial pre-tightening. Then, the non-real-time two-point contact analytical models of all the meshing pairs are further constructed to obtain the normal force expression to determine the critical compression coefficients. Experimental investigations are performed to verify the analytical model using the critical compression coefficients.

  • https://doi.org/10.12989/sem.2022.81.4.481 인용 KSCI