Abstract: An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion. The end face polishing device has: a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction; a pressing drive source for outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism for transmitting the driving force output from the pressing drive source as a pressing force in the axial movement direction of the polishing plate.

Abstract: The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device 1 for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate 5 driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion 9.

Abstract: In an optical fiber ferrule polishing holder 20 used for polishing an optical fiber ferrule 30 having a rectangular cross section, the optical fiber ferrule polishing holder 20 having: a body part 21 having an insertion hole 21A into which the optical fiber ferrule 30 can be inserted, the body part 21 being capable of abutting on the optical fiber ferrule 30 at a support wall 21A1 of the insertion hole 21A; and a fixing part 25 (29) having a pressing wall 25B (29B) for pressing the optical fiber ferrule 30 to the support wall 21A1 at a predetermined pressure, wherein the support wall 21A1 is inclined at a predetermined angle with respect to a vertical axis which is vertically extended from a polishing surface 13 of an optical fiber ferrule polishing machine 10, and the support wall 21A1 has a protrusion 21C toward the pressing wall 25B (29B).

Abstract: Provided is an optical fiber ferrule polishing jig capable of fixing an optical fiber ferrule and releasing the optical fiber ferrule. An optical fiber ferrule polishing jig 10A has; a base 12a having insertion holes 20 into which optical fiber ferrules 51 can be detachably inserted; pivoting rods 13 which are adjacent to the insertion holes 20 of the base 12a and rotatable around lower end portions 36; fixing pieces 14a installed in installation recesses 19a formed in the base 12a to fix the optical fiber ferrules 51 with respect to the insertion holes 20 by being moved as the rods are pivoted; and a plurality of coil springs 15a installed in the installation recesses 19a to bias the fixing pieces 14a so as to release fixing of the optical fiber ferrules 51 with respect to the insertion holes 20.

Abstract: The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device 1 for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate 5 driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion 9.

Abstract: Provided is an optical fiber ferrule polishing jig capable of fixing an optical fiber ferrule and releasing the optical fiber ferrule. An optical fiber ferrule polishing jig 10A has; a base 12a having insertion holes 20 into which optical fiber ferrules 51 can be detachably inserted; pivoting rods 13 which are adjacent to the insertion holes 20 of the base 12a and rotatable around lower end portions 36; fixing pieces 14a installed in installation recesses 19a formed in the base 12a to fix the optical fiber ferrules 51 with respect to the insertion holes 20 by being moved as the rods are pivoted; and a plurality of coil springs 15a installed in the installation recesses 19a to bias the fixing pieces 14a so as to release fixing of the optical fiber ferrules 51 with respect to the insertion holes 20.

Abstract: In an optical fiber ferrule polishing holder 20 used for polishing an optical fiber ferrule 30 having a rectangular cross section, the optical fiber ferrule polishing holder 20 having: a body part 21 having an insertion hole 21A into which the optical fiber ferrule 30 can be inserted, the body part 21 being capable of abutting on the optical fiber ferrule 30 at a support wall 21A1 of the insertion hole 21A; and a fixing part 25 (29) having a pressing wall 25B (29B) for pressing the optical fiber ferrule 30 to the support wall 21A1 at a predetermined pressure, wherein the support wall 21A1 is inclined at a predetermined angle with respect to a vertical axis which is vertically extended from a polishing surface 13 of an optical fiber ferrule polishing machine 10, and the support wall 21A1 has a protrusion 21C toward the pressing wall 25B (29B).

Abstract: The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device 1 for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate 5 driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion 9.

Abstract: Provided is an optical fiber ferrule polishing jig capable of fixing an optical fiber ferrule and releasing the optical fiber ferrule. An optical fiber ferrule polishing jig 10A has; a base 12a having insertion holes 20 into which optical fiber ferrules 51 can be detachably inserted; pivoting rods 13 which are adjacent to the insertion holes 20 of the base 12a and rotatable around lower end portions 36; fixing pieces 14a installed in installation recesses 19a formed in the base 12a to fix the optical fiber ferrules 51 with respect to the insertion holes 20 by being moved as the rods are pivoted; and a plurality of coil springs 15a installed in the installation recesses 19a to bias the fixing pieces 14a so as to release fixing of the optical fiber ferrules 51 with respect to the insertion holes 20.

Abstract: A polishing holder mounting jig 10 is configured to mount an optical fiber ferrule polishing holder 50 to a mounting shaft 104 of an optical fiber ferrule polishing machine 103 when the mounting shaft 104 of the optical fiber ferrule polishing machine 103 is inserted into an insertion space of an insertion pipe 12, the exposed end portion 36 is moved gradually outward in a radial direction along a tip inclined face 108 against a biasing force of a coil spring 15, the exposed end portion 36 is slid on an outer peripheral surface of the mounting shaft 104 until the exposed end portion 36 reaches a central recess 109, and the exposed end portion 36 is moved inward in the radial direction toward the central recess 109 by the biasing force of the coil spring 15 until the exposed end portion 36 is exposed to the central recess 109.

Abstract: An object is to improve the wear resistance of a mold part and improve accuracy of disc substrates. A disc-molding mold comprises a first mold including a first support plate and a first mirror-surface disc attached to the first support plate; and a second mold including a second support plate and a second mirror-surface disc attached to the second support plate. A sliding surface of a mold part disposed on one of the first and second molds is treated by means of low-temperature nitriding. In this case, since the mold part is treated by means of low-temperature nitriding, the wear resistance of the mold part can be improved. In addition, since the treatment temperature is low, even when low-temperature nitriding is performed on a mold part which is complicated in shape, the mold part does not deform, and its dimensional variation can be decreased.

Abstract: The invention provides a mold for molding a disk which can uniformly cool a molded product and prevent generation of printing unevenness in a printing region of the molded product, and a molded product molded by use of the mold. The mold includes a first mold plate; a first mirror-surface disk; a second mold plate disposed to advance and retreat in relation to the first mold plate; a second mirror-surface disk forming a cavity in cooperation with the first mirror-surface disk in a mold-clamped condition; a stamper (32) attached to one of the first and second mirror-surface disks and having a fine pattern formed on a front end surface thereof; and a bush (55) extending through the other of the first and second mirror-surface disks. On a front end surface of the other mirror-surface disk, the bush (55) is disposed radially inward of a region for forming a clamp area.