3results about How to "No abnormal sound" patented technology

The utility model relates to the technical field of clamping wheels, in particular to an integrated clamping wheel, which comprises an outer ring, an inner ring, an inner ring and an outer ring, the inner ring comprises an inner ring a and an inner ring b, the inner ring a and the inner ring b are both rotationally installed in an inner hole of the outer ring, and the inner ring a and the inner ring b are both rotationally installed relative to the outer ring through pin rollers; the inner ring a and the inner ring b are installed in a relative rotation mode, the outer ring is provided with a lubricating oil way in the radial direction, the lubricating oil way is used for injecting lubricating oil to lubricate the pin roller, and the technical problems that in the prior art, a clamping wheel is generally prone to deviation, and noise and abnormal sound are generated or walking is not smooth due to long-term use abrasion are solved.

The utility model discloses a gravity return hinge device belongs to door body hinge field, including upper hinge, pin shaft, first shaft sleeve, second shaft sleeve and lower hinge, upper hinge is integral type structure, is constituted by upper hinge board, sleeve and pivot, upper hinge board bottom surface and sleeve top end vertical, pivot is located in the sleeve, and with sleeve coaxial arrangement, pivot top end and upper hinge board vertical, bottom end and stretch out sleeve, be equipped with first through -hole and second through -hole on the sleeve wall, be equipped with third through -hole on the pivot, and three through -holes coaxial arrangement, pin shaft passes first through -hole, third through -hole and second through -hole in proper order, and with three through -hole interference fit, first shaft sleeve rotatable sleeve on pin shaft between first through -hole and third through -hole section, second shaft sleeve rotatable sleeve on pin shaft between second through -hole and third through -hole section. Pin shaft and upper hinge jointly bear the weight of door body, greatly improved the bearing strength to door body, has promoted the service life of hinge.

A quartz jig for machining silicon rings and its application, comprising: a disc-shaped body; the material of the disc-shaped body includes fused silica with a SiO2 mass content ≥99.9%; a central through hole is provided at the axis of the disc-shaped body; the radially inner region of the disc-shaped body includes an inner annular support surface; the radially outer region of the disc-shaped body includes an outer mounting flange surface; the outer mounting flange surface and the inner annular support surface are coaxially arranged, and the upper and lower openings of the mounting holes on the outer mounting flange surface are countersunk structures, and the edges of the mounting holes are provided with arc transition structures; the central through hole, the stepped edges of the inner annular support surface, and the chamfer positions of the outer mounting flange surface are all provided with arc chamfers. By using fused silica material and combining it with the low-stress structure of the disc-shaped body, the two work together to enable the quartz jig to achieve high-precision machining, low workpiece deformation, no surface scratches, and no stress accumulation during the machining of silicon rings in an integrated manner.