摘要:
A position detection apparatus having a scale with resilient engaging portions that attach to a lower surface of the scale and engage insertion holes in a track rail into which fastening members are inserted for fixing the track rail to a bed. Also, a track rail unit that includes the position detection apparatus, and a guide unit that includes the track rail unit.
摘要:
An XY drive apparatus is described that is thin and enables the performing of both high-precision and high-speed work. The above advantages are achieved by using flat linear electromagnetic actuators for the driving source that perform high-speed work. In addition, these linear electromagnetic actuators are arranged on both sides of the apparatus, thereby preventing deviations in operation between both sides to achieve highly accurate positioning.
摘要:
The present invention discloses a positioning apparatus that, together with rotating an object (driven object), positions and guides said object to an arbitrary position within its rotating plane. This positioning apparatus can easily be made compact in size and its rotary motion is not restricted by a power supply cord and so forth. The above-mentioned effects are obtained by arranging a driving force generation device, more specifically a motor, which generates driving force to be applied to a linear motion table of a linear motion table mechanism, within the base portion of a rotary table mechanism.
摘要:
A linear electromagnetic actuator and drive unit are described that ensure high durability for the wiring used for signal transmission, minimize the effect of the friction of said wiring on the operation of the moving portion to enable the obtaining of a highly precise operating state, achieve both reduced costs and compact size, and are able to maintain the function of the wiring itself for a long time. The above effects are obtained by using a printed wiring substrate for the wiring, and providing a sliding member that guides the printed wiring substrate by sliding on it.
摘要:
A drive apparatus equipped with a ball screw and a plurality of nuts achieves compact size while maintaining output. The above-mentioned effect is obtained by employing ultrasonic motors, concentric with the nuts and ballscrews, which are flat and able to maintain a high output, for driving the nuts.
摘要:
A rolling guide unit is disclosed of the curved movement type that together with achieving increased load capacity and rigidity, improved vibration damping characteristics, low noise levels, smooth operation and an extended service life, also demonstrates adequate functions particularly with respect to generated centrifugal force.The above-mentioned effects are obtained by employing a cross roller system in particular.
摘要:
A linear motion rolling contact guide unit includes a rail, a slider comprised of a center block and a pair of front and rear end blocks, a plurality of rolling members interposed between the rail and the slider and a retainer plate mounted on the slider for providing an intended sealing effect. The end block is formed with an elongated slot and the retainer plate is provided with a projection engageable with the elongated slot such that the projection may move within the slot in the longitudinal direction over a predetermined distance. Thus, even if the retainer plate is comprised of a plastic material and thus expands or contracts relative to the slider for various reasons, such a change in size mya be absorbed effectively so that the retainer plate is self-adjusted in position.
摘要:
A drive apparatus equipped with a ball screw and has nuts fitted onto a screw shaft to be approaching each other. Ends of the nuts are coupled to each other while being able to rotate freely with respect to each other. The screw shaft has two opposing threads formed thereon which are engaged respectively with the nuts.
摘要:
The under seal of this linear rolling guide unit comprises a pair of L-shaped under seal members that are bent and engaged together. The under seal members can be positioned relative to each other by engaging the engagement projections and the engagement recesses. Because the under seal members can be moved relative to each other in the longitudinal direction, if there are dimensional errors in the overall length of the slider in the longitudinal direction, they can be offset by adjusting the overall length of the under seal. In this way, the elongation and contraction due to thermal expansion and external forces are accommodated. The under seal is secured to the end surfaces of the end caps, not the underside of the slider, so that even when the dimension H.sub.1 between the base on which the track rail is installed and the slider's underside is small, the under seal can be easily and firmly fixed.
摘要:
A linear motion rolling guide unit that obtains high operating accuracy while suppressing sliding resistance to a low level without affecting the mounting state. The bottom surfaces of countersunk portions for insertion of fastening members are formed so as to be positioned, in the direction of said fastening, either on or below a hypothetical extended surface of that one of two bearing surfaces of a track surface that is positioned in said direction of fastening of the fastening member. The opening angle of the track surface is thus not narrowed by the fastening of said fastening members thus allowing high operating accuracy to be obtained and sliding resistance to be suppressed to a low level.