摘要:
There is performed a treatment including a grinding working step of grinding at least a portion of a rolling surface and a sliding surface of a motion guide device using a rolling member by a grinding working using a grinding stone, and a surface treating step of effecting a peening treatment to a friction surface formed by the grinding working to render a defect on the friction surface caused by the grinding working harmless. By manufacturing a motion guide device through such treating steps, a defect such as flaw generated on the friction surface is made harmless, the fatigue strength, sliding performance and lifetime of the device can be improved. Even in a travelling distance test, a travelling distance largely over a calculated lifetime could be achieved. Accordingly, even if a flaw is generated on the friction surface or rolling surface by the grinding working using a grinding stone, the flaw can be made harmless without giving influence to an allowable dimensional accuracy of a member to be treated.
摘要:
The present invention provides a screw device enabling insulation of sounds occurring from the inside of the screw device when circulating rolling elements. The screw device includes: a screw shaft 1 having a spiral rolling-element rolling groove 1a on an outer circumferential surface; a nut body 2 having a spiral loaded rolling-element rolling groove 2a on an inner circumferential surface to oppose the rolling-element rolling groove 1a of the screw shaft 1 and having therein a rolling-element returning passage 6 to return rolling elements 3 rolling in a loaded rolling-element rolling passage 10 formed between the loaded rolling-element rolling groove 2a and the rolling-element rolling groove 1a of the screw shaft 1; a circulation member 9 attached to an end face of the nut body 2 and provided with a direction changing passage 5 to connect the loaded rolling-element rolling passage 10 and the rolling-element returning passage 6; and a sound insulating member 11 attached to the nut body 2 to which the circulation member 9 is attached and formed to have an inner circumferential surface coming into contact with the screw shaft and to cover the circulation member 9.
摘要:
Provided is a shaft member capable of minimizing the occurrence of noise by positively attenuating vibration acting on a metal shaft member having spline grooves and spiral grooves axially formed therein. To attain such an object, a shaft member includes a metal shaft main body having a hollow portion and a ceramic material serving as a vibration absorbing member which fills the hollow portion of the shaft body with no gaps. The ceramic material is filled into the hollow portion of the shaft main body in a powder, granular, or fluid state, and formed within the hollow portion into a shape matching the hollow portion.
摘要:
A tape-shaped product and a belt for ball chain are provided. A tape-shaped product of synthetic resin including a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape; and a belt for ball chain, including a tape-shaped product of synthetic resin formed by injection molding together with a fibrous member as an insert of a resin of the same kind as the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes disposed at equal intervals, and ball-retaining projections disposed around the holes.