JPH0118252Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gasket ring countersink groove cutting tool holder device with a portable facer that enables easy cutting of a gasket ring countersunk groove on the flange surface of a flange pipe at a piping construction site. be.

Conventionally, ring grooves for gaskets on the flange surfaces of high-pressure flange pipes used for piping in nuclear power plants, petrochemical plants, undersea excavations, etc. have been cut by bringing them to a cutting factory and using large cutting machines installed there. The reality is that it is under construction. As a result, the number of man-hours required for piping work and repair work is high, resulting in low work efficiency.Furthermore, the portable facer used for cutting ring grooves with a rectangular cross section has a cutting tool that moves only horizontally or vertically, and the flange Cutting ring grooves for gaskets on the flange surface of high-pressure flange pipes, which are mainly used for facing surfaces, and therefore require countersunk grooves with sloped groove walls even if the cutting surface of the cutting tool is adjusted. It was difficult to do so.

The purpose of this invention is to provide a gasket ring countersink groove cutting tool holder that is attached to the portable facer and can be attached to the portable facer to easily and easily perform cutting of ring countersunk grooves for gaskets on the flange surface of high pressure flange pipes at piping construction sites. The gist of the present invention is as follows.

The flange surface B is cut using a cutting tool 19 attached to a blade holder 3 which is slidably attached to the arm 2 of the portable facer 1 which is attached to the flange pipe A via a support 18 at a location close to the flange surface B. In an apparatus for machining a top surface, a tool holder holder having a tool holder insertion hole 6 whose tip side is inclined at a required angle toward the blade holder 3 with respect to the base 5 fitted and fixed to the blade holder 3 is used. A body 7 is integrally protruded, and a bearing arm 9 with a bearing hole 8 drilled in the extending direction of the tool holder insertion hole 6 is provided on the rear end side of the receiver 7. Slideably insert the tool holder 10 into the hole 6,
The portable face is characterized in that the tool holder 10 and the tool holder threaded rod 14 inserted from the bearing hole 8 are rotatably screwed together, and the threaded tool 14 is rotatably held by the bearing arm 9. Slanted ring countersunk groove cutting device for gaskets included with the service.

Hereinafter, the structure of one embodiment of the present invention will be explained with reference to the drawings.The blade holder 3 is formed in a blade holder 3 that can be slidably attached to the arm 2 of the portable facer 1 and fixed at an appropriate position. A tool holder receiver 7 is provided with a base 5 that is fitted and fixed in one side receiving groove 4a, and a tool holder insertion hole 6 whose tip side is inclined toward the blade holder 3 with respect to the base 5
A bearing arm 9 having a bearing hole 8 drilled in the extending direction of the tool holder insertion hole 6 is integrally provided on the rear end side of the receiver 7, and The cutting tool holder 10 is slidably inserted into the hole 6. The cutting tool holder 10 has a cutting tool mounting portion 11 bent slightly outward, and a female screw 12 is screwed in the rear portion at the center along the direction of the holder, and a male screw portion 13 is threaded to a predetermined portion on the tip side. Insert the tool holder threaded rod 14 into the bearing hole 8, rotatably screw the male threaded part 13 into the female thread 12 of the tool holder 10, and attach a predetermined portion of the threaded rod 14 to the bearing arm 9. Both sides of the screw rod 14 are rotatably held by a collar 15 and a double nut 16, and a handle 17 is attached to the tip of the screw rod 14.

A device having a configuration similar to that described above is attached to the blade holder 3.
The grooves are arranged symmetrically to the other side receiving groove 4b formed in the groove 4b.

Reference numeral 18 denotes a tube support column of the portable facer 1. 19 is a cutting tool attached to the cutting tool attachment part 11.

Next, to explain the function and effect based on the above embodiment, when the handle 17 is rotated toward the grooved part of the flange surface B of the flange pipe A, which is supported and fixed in advance to the pillar 18 of the portable facer 1, the tool holder Since the screw rod 14 is rotatably held by the bearing arm 9, the cutting tool holder 10 rotatably screwed onto the screw rod 14 is inserted along the cutting tool holder insertion hole 6 inclined toward the blade holder 3 side. Move forward or backward. Therefore, when the portable facer 1 is operated to rotate the flange pipe A and the blade holder 3 relative to each other, and the handle 17 is rotated in a predetermined direction to move the cutting tool holder 10 forward, the tool holder 10 can be attached to it. Since the cutting tool 19 is oriented diagonally with respect to the grooved portion of the flange surface B of the flange pipe A, one side of the groove wall is cut obliquely.

Then, by the same handling operation as described above, a device having the same configuration as described above, which is installed symmetrically on the opposite side of the blade holder 3, is symmetrically and obliquely installed from the opposite side with respect to the grooved part of the flange surface of the flange pipe A. The other side of the groove wall is cut obliquely from the direction, thereby forming a ring countersunk groove.

As described above, the present invention has a tool holder insertion hole 6 whose tip end is inclined at a required angle (23 degrees in the illustrated example) toward the blade holder 3 with respect to the base 5 that is fitted and fixed to the blade holder 3. A tool holder receptacle 7 is integrally protruded, and a bearing arm 9 with a bearing hole 8 bored in the extending direction of the tool holder insertion hole 6 is provided on the rear end side of the receptacle 7. , the tool holder 10 is slidably inserted into the tool holder insertion hole 6, and the tool holder 10 and the tool holder threaded rod 14 inserted from the bearing hole 8 are rotatably screwed together. is rotatably held by the bearing arm 9, it is possible to cut countersunk grooves for gasket rings (with inclined surfaces) (for example, APIBX
Precision machining of the 23° ring countersunk groove) can be easily carried out at the piping construction site, and high precision precision machining (to seal the high pressure of 1400 kg/cm ² of the ring countersunk groove with metal-to-metal) This makes it possible to perform the precision machining necessary for

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the configuration of an embodiment of the present invention;
Fig. 2 is a cross-sectional view taken along the line in Fig. 1 with the tool holder excluded, Fig. 3 is a view seen from the direction of arrow A in Fig. 1, and Fig. 4 is a plan view showing the state of use. .

Claims (1)

[Claims for Utility Model Registration] A cutting tool attached to a blade holder 3 slidably attached to an arm 2 of a portable facer 1 attached to a flange pipe A through a support 18 in the vicinity of its flange surface B. In the device for processing the top surface of the flange surface B in step 19, a cutting tool holder is fitted with the tip side inclined at a required angle toward the blade holder 3 with respect to the base 5 fitted and fixed to the blade holder 3. A tool holder receiving body 7 having an insertion hole 6 is integrally protruded, and a bearing arm 9 having a bearing hole 8 bored in the extending direction of the tool holder insertion hole 6 is arranged on the rear end side of the receiving member 7. At the same time, the tool holder 10 is slidably inserted into the tool holder insertion hole 6,
The portable face is characterized in that the tool holder 10 and the tool holder threaded rod 14 inserted from the bearing hole 8 are rotatably screwed together, and the threaded tool 14 is rotatably held by the bearing arm 9. Slanted ring countersunk groove cutting device for gaskets included with the service.