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).

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).

A pipe coating removal apparatus (1) for removing all or some of the coating on a pipe, the pipe coating removal apparatus (1) having a pipe support means (2) for supporting a length of pipe. and further having a tool carriage (3). The tool carriage (3) being capable of supporting two or more different types of pipe coating removal tools (4), (5), (6), (7), (8), (80), (81), (82) and/or (70). The pipe coating removal apparatus (1) being capable of causing relative movement between the tool carriage (3) and the pipe support means (2) to remove all or some of the coating on the pipe that is supportable by the pipe support means (2).

A pipe coating removal apparatus (1) for removing all or some of the coating on a pipe, the pipe coating removal apparatus (1) having a pipe support means (2) for supporting a length of pipe. and further having a tool carriage (3). The tool carriage (3) being capable of supporting two or more different types of pipe coating removal tools (4), (5), (6), (7), (8), (80), (81), (82) and/or (70). The pipe coating removal apparatus (1) being capable of causing relative movement between the tool carriage (3) and the pipe support means (2) to remove all or some of the coating on the pipe that is supportable by the pipe support means (2).

The present invention discloses an automatic grinding device for weld beading on the inner wall of a pipeline with a large length to diameter ratio. The automatic grinding device includes a supporting module, and a walking module, a working module and a control module which are arranged on the supporting module, where the walking module is used for moving the supporting module to the butt welding position of the pipeline; the working module is used for grinding the weld beading; and the control module is used for controlling the actions of the walking module and the working module. When the pipeline rotates along the axial direction, the position of the grinding device can remain at the bottom of the pipeline, rather than rotating together with the pipeline, and the elimination of weld beading on the whole circumference at the butt welding position of the pipeline is realized.

The present invention discloses an automatic grinding device for weld beading on the inner wall of a pipeline with a large length to diameter ratio. The automatic grinding device includes a supporting module, and a walking module, a working module and a control module which are arranged on the supporting module, where the walking module is used for moving the supporting module to the butt welding position of the pipeline; the working module is used for grinding the weld beading; and the control module is used for controlling the actions of the walking module and the working module. When the pipeline rotates along the axial direction, the position of the grinding device can remain at the bottom of the pipeline, rather than rotating together with the pipeline, and the elimination of weld beading on the whole circumference at the butt welding position of the pipeline is realized.

A polishing brush (1) includes a rod-shaped member (2) and a grinding element bundle (4) formed of a plurality of wire-shaped grinding elements (3). The rod-shaped member (2) has a holding hole (6) at a front portion (2a) to hold the grinding element bundle (4). The holding hole (6) has a bottom face (7) and a sleeve-shaped peripheral wall (8) extending from the bottom face (7) in an inclination direction (S). The grinding element bundle (4) has a seated portion (4a) seated in the holding hole (6) and a protruding portion (4b) protruding from an opening (6a) of the holding hole (6) in the inclination direction (S). The tip end of the protruding portion (4b) is located on the outside of the rod-shaped member (2) when viewed from the axis (L0) direction.

A polishing brush (1) includes a rod-shaped member (2) and a grinding element bundle (4) formed of a plurality of wire-shaped grinding elements (3). The rod-shaped member (2) has a holding hole (6) at a front portion (2a) to hold the grinding element bundle (4). The holding hole (6) has a bottom face (7) and a sleeve-shaped peripheral wall (8) extending from the bottom face (7) in an inclination direction (S). The grinding element bundle (4) has a seated portion (4a) seated in the holding hole (6) and a protruding portion (4b) protruding from an opening (6a) of the holding hole (6) in the inclination direction (S). The tip end of the protruding portion (4b) is located on the outside of the rod-shaped member (2) when viewed from the axis (L0) direction.

Apparatuses and associated methods for polishing side surfaces of fibers. The system includes a fiber loading mechanism for securing a fiber to the apparatus, a polishing mechanism, and a linear motion mechanism for linearly translating one of the polishing mechanism and the fiber for polishing a side surface of the fiber using the polishing mechanism.

Apparatuses and associated methods for polishing side surfaces of fibers. The system includes a fiber loading mechanism for securing a fiber to the apparatus, a polishing mechanism, and a linear motion mechanism for linearly translating one of the polishing mechanism and the fiber for polishing a side surface of the fiber using the polishing mechanism.