Guide mechanism and linear motor
A technology of guiding mechanism and linear motor, which is applied in the direction of electromechanical devices, mechanical equipment, linear motion bearings, etc., and can solve problems such as contact wear, uneven contact point pressure, differential wear, etc.
Inactive Publication Date: 2015-07-01
HITACHI METALS LTD
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Problems solved by technology
[0003] Drum rollers sometimes experience significant differential wear due to differential sliding between the roller surface and the bearing surface of the rod member
In addition, when the contact points between the roller surface of the drum roller and the guide shaft are increased in order to reduce the differential wear of the drum roller, the pressure of each contact point is uneven, and sometimes obvious contact wear occurs
Method used
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Embodiment approach 1
[0069] Hereinafter, this embodiment will be specifically described with reference to the drawings. The guide mechanism of the present invention is built in, for example, a linear motor, and guides the mover of the linear motor in the moving direction. Furthermore, the guide mechanism of the present invention is built in, for example, a moving mechanism of an optical pickup (Optical Pick-up) of a magnetic disk device, and guides the optical pickup in a moving direction. The linear motor of the present invention is built in, for example, a drive stage for linearly moving a placed object, and is used as a drive source capable of moving the drive stage. In this embodiment, a linear motor with a built-in guide mechanism is taken as an example for description.
[0070] figure 1 as well as figure 2 It is a schematic plan view and a schematic side view showing an example of a linear motor. The linear motor includes: a cylindrical stator 1 and a mover 2 passing through the stator....
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A guide mechanism and a linear motor which are compact. Guide members (4, 5) for guiding a mover (2) in the direction of movement thereof are provided to a stator (1) so as to respectively face guide bars (21, 22) which are provided to the side surfaces of the mover (2) extending in the longitudinal direction thereof. One end of a shaft section (40, 50) of the guide member (4, 5) is provided with two support rings (41, 42; 51, 52) fitted thereto at a spacing in such a manner that the two support rings (41, 42; 51, 52) face each other in the direction of the axis of the shaft section (40, 50) and can rotate individually. The support rings (41, 42; 51, 52) support, at tapered support surfaces thereof located at ends of opposing surfaces thereof, a side surface of the guide bar (21, 22), the side surface extending in the longitudinal direction of the guide bar (21, 22). The guide member (5) is provided, at one end of the shaft section (50) thereof, with an eccentric shaft section (53) extending in the axial direction and eccentric to the axis of the shaft section (50). The guide member (5) is affixed to the stator (1) by a nut (3) engaged with a screw thread section of the eccentric shaft section (53) with a flat washer (3a) provided therebetween, the flat washer (3a) being loosely fitted on the screw thread section.
Description
technical field [0001] The present invention relates to a guide mechanism and a linear motor that can be reduced in size. Background technique [0002] In recent years, there has been proposed a linear motor composed of a stator and a mover. The stator is composed of a magnetic body and a coil; installed on the stator. A guide mechanism is sometimes provided in such a linear motor for guiding the mover relative to the stator in the direction of movement and holding it in a magnetically neutral position. In order to guide the mover moving substantially linearly with respect to the stator, a guide mechanism provided on the side of the mover and provided with drum-shaped rollers (support wheels) for supporting the A guide shaft (guide rod) extending in the moving direction of the mover (for example, refer to Patent Document 1 and Patent Document 2). [0003] The drum roller may suffer from large differential wear due to differential sliding between the roller surface and the...
Claims
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IPC IPC(8): F16C29/04H02K41/02
CPCF16C29/02F16C32/0472F16C29/04H02K41/02
Inventor 武富正喜赤岭功远藤诚
Owner HITACHI METALS LTD