No.1017E 2020Special Edition on Automotive Technologies Development of a Ball Screw for Electric Brakes |
| Category | TECHNICAL REPORT |
|---|---|
| Author | G. ARAMOTO Automotive Bearing Development Dept., Bearings Business Unit T. KOBAYASHI Research & Development Division A. TASHIRO Automotive Bearing Development Dept., Bearings Business Unit |
| Abstract | We have developed a non-circulating ball screw with a simple structure for the actuator of the EMB (Electro Mechanical Brake) which eliminates the need for a complex ball circulating part. Since there is no circulating part, it is necessary to prevent the ball from falling off during stroke. When the load is small, the ball is fi xed by an elastic holding, and the spring is contracted by the revolution of the ball during braking, then the ball returns to its original position when the brake is released. This paper introduces the confi guration and use of non-recirculating ball screws and demonstrates their effectiveness for use in electric brakes. |
| Keyword | EMB, Electro Mechanical Brake, ball screw, non-circulating, spring |
| Reference | M. ASAKURA, K. UCHIYAMA, S. INOUE: Development of Spacer Balls for Rack Parallel Type Electric Power Steering, JTEKT ENGINEERING JOURNAL, No. 1015E (2018) 47. |
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