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Research Papers: Other (Seals, Manufacturing)

Reduction of Sticking in a Linear-Guideway Type Recirculating Ball Bearing

[+] Author and Article Information
Hiroyuki Ohta

Department of Mechanical Engineering,
Graduate School of Engineering,
Nagaoka University of Technology,
1603-1 Kamitomika,
Nagaoka, Niigata 940-2188, Japan
e-mail: ohta@mech.nagaokaut.ac.jp

Guillermo Andres Guajardo Dueñas

Department of Mechanical Engineering,
Graduate School of Engineering,
Nagaoka University of Technology,
1603-1 Kamitomika,
Nagaoka, Niigata 940-2188, Japan
e-mail: guajardomemo@gmail.com

Yusuke Ueki

Design and Development Department,
Nippon Bearing Co., Ltd.,
2833 Chiya,
Ojiya, Niigata 947-8503, Japan
e-mail: dtd28@nb-linear.co.jp

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received March 22, 2018; final manuscript received August 8, 2018; published online October 16, 2018. Assoc. Editor: Daejong Kim.

J. Tribol 141(2), 022202 (Oct 16, 2018) (6 pages) Paper No: TRIB-18-1123; doi: 10.1115/1.4041210 History: Received March 22, 2018; Revised August 08, 2018

This paper deals with the reduction of sticking in a linear-guideway type recirculating ball bearing (linear bearing), which is the significant increase in the required driving force for a linear bearing in a back-and-forth short stroke operation. First, the driving force of a linear bearing with five carriage-body types (A–E, having different dimensions and shapes) under rolling moment load was measured. Simultaneously, the ball's position in the load zone was observed. The experimental results showed that regardless of the carriage-body types, the increasing rate of the driving force and the interspace (space between balls around the center of the load zone on the raised side) decreases and sticking tends to hardly occur as the maximum linear velocity and the stroke length increase. Also, the occurrence of sticking was affected by the carriage-body types. Finally, to examine the relationship of carriage-body types, carriage-body deformation, and the occurrence of sticking, the carriage-body deformation (caused by preloading and tightening torque of bolts) was calculated by finite element method (FEM). The FEM results showed that carriage-body type, which is more deformable, had a tendency to reduce sticking.

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References

Ohta, H. , Hanaoka, G. , and Ueki, Y. , 2017, “ Sticking of Linear-Guideway Type Recirculating Ball Bearings,” ASME J. Tribol., 139(3), p. 031103. [CrossRef]
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Figures

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Fig. 2

Carriage-body types

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Fig. 3

Experimental apparatus

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Fig. 4

Setting the initial position of the balls using the jig

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Fig. 6

Measured driving force (Vmax = 0.01 m/s, St = 0.01 m): (a) type A and (b) type E

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Fig. 7

Effects of Vmax and St on R of carriage-body types A–E: (a) type A, (b) type B, (c) type C, (d) type D, and (e) type E

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Fig. 8

Measured ball's position in the load zone (Vmax = 0.01 m/s, St = 0.01 m): (a) type A and (b) type E

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Fig. 9

Effects of Vmax and St on G of carriage-body types A–E: (a) type A, (b) type B, (c) type C, (d) type D, and (e) type E

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Fig. 10

Relationship of GAVG and RAVG

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Fig. 11

FE model (type A): (a) overall view, (b) detail A, and (c) enlarged view B-B

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Fig. 12

Carriage-body deformation obtained by FEM: (a) type A (δCAVG = 0.388 μm) and (b) type E (δCAVG = 0.506 μm)

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Fig. 13

Effects of δCAVG on RAVG

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