JP6635665B2 - Deformed tube hole drilling device and method for drilling hole in deformed tube - Google Patents

Description

  The present invention relates to a deformed pipe hole drilling device and a method of drilling holes in a deformed pipe for drilling a through hole in a peripheral wall of a deformed pipe.

  Conventionally, a modified pipe hole drilling device is used as a device for drilling a through hole in a peripheral wall of an intermediate section of a deformed pipe in which both ends of the pipe body are reduced in diameter as compared with an intermediate section in the axial direction. Is used. For example, there is a drilling device disclosed in Patent Document 1.

  The punching device disclosed in Patent Document 1 is a device for punching a through hole in a peripheral wall of a cylindrical portion of a work by press punching, in which a die is formed on a distal end side, and the die contacts the inner surface of the peripheral wall of the cylindrical portion. A die portion to be inserted so as to be inserted and a portion for supporting the die on the tip side are formed, and the portion for supporting the die is inserted into the peripheral wall inner surface opposite to the peripheral wall inner surface of the cylindrical portion so as to abut. A support part, an intermediate insertion part inserted between the die part and the support part to form a die unit integrated with the die part and the support part, and a die unit arranged in the cylindrical part without a gap in the press punching direction; And a punch for punching a through hole by driving from outside of the shape.

Japanese Patent No. 4990756

  However, in the case of the conventional deformed pipe hole drilling device, it is difficult to increase the efficiency of the drilling operation because the scrap is left on the die and it is troublesome to remove the scrap from the die. Met.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a modified pipe hole drilling device and a modified pipe hole drilling method capable of improving the efficiency of drilling work.

In the deformed pipe hole drilling device according to claim 1, a punch for punching a through hole in a peripheral wall by pressing from the outside of the deformed pipe, and a die are formed at a tip of a rod-shaped part extending in a rod shape, A die portion having a die side hole having a shape and a position through which a punch can be inserted into the die, and a die portion inserted from an opening at one end so that the die can abut on the inner side of the peripheral wall of the deformed pipe in which the through hole is formed. A support portion is formed at the tip of the rod-shaped portion extending in a rod shape, and the support portion is inserted from an opening at one end so as to be able to abut on an inner wall opposed to an inner peripheral wall of the deformed pipe in which a through hole is formed. And a backup hole having a shape and a position capable of accommodating a cutout of a through hole formed by a punch in a rod-shaped portion extending in a rod shape, and having a larger opening than the die side hole. And a spacer part inserted from one end of the opening between , In a state housed in drain hole of the spacer portion, by withdrawing the spacer portion from between the die part and the backup unit, characterized in that discharging the scrap to the outside of the profiled tube.

  According to a second aspect of the present invention, there is provided a punching device for positioning a deformed pipe with respect to a punch, a die section, a backup section, and a spacer section by bringing a peripheral portion of one opening of the deformed pipe into contact. It is characterized by comprising a member.

  An apparatus for boring a deformed tubular body according to claim 3, wherein the spacer has a groove or a streak extending in the axial direction on the spacer side and the die side of the spacer, respectively. When inserted between the portion and the backup portion, the spacer portion is closely integrated with the die portion while being integrated with the groove portion and the streak portion, and is integrated.

  In the deformed pipe hole drilling device according to the fourth aspect, in a state where the scrap is stored in the hole of the spacer portion, the spacer is removed from between the die portion and the backup portion. It is characterized by comprising a detecting means for confirming that it has fallen off.

The method of forming a hole in a deformed tubular body according to claim 5, wherein a die is formed at a tip of a rod-shaped portion extending in a rod shape, and a die portion having a die-side hole having a shape and a position at which a punch can be inserted into the die is deformed. Insert the tube through the opening at one end and move the die so that the die contacts the inside of the peripheral wall of the deformed tube where the through hole is drilled. The formed backup part is inserted from the opening at one end of the deformed pipe, and the backup part is moved so that the support part abuts on the inner wall facing the inner peripheral wall of the deformed pipe where the through hole is formed. The spacer portion having a hole having an opening larger than the die side hole is formed in a shape and position capable of accommodating a cutout of a through hole formed by a punch in a rod-like portion extending in a rod shape, and a die portion and a backup portion. Between the opening of one end and by punch, The through hole is formed in the peripheral wall by pressing from the outside of the shaped pipe, and the blank is removed from the space between the die and the backup while the blank is stored in the blank of the spacer. The waste is discharged to the outside of the deformed pipe.

  According to a sixth aspect of the present invention, there is provided a method of forming a hole in a deformed pipe body, wherein a peripheral portion of one opening of the deformed pipe is brought into contact with a protruding portion prior to inserting a die portion into the deformed pipe, thereby forming a punch, a die portion, and a backup. The positioning of the deformed pipe with respect to the portion and the spacer portion is performed.

  The method of forming a hole in a deformed tubular body according to claim 7, wherein the spacer portion side of the die portion and the die portion side of the spacer portion each have a groove or a streak portion extending in the axial direction, and the spacer portion is When inserted between the die part and the backup part, the groove part and the streak part are fitted, and the spacer part is tightly integrated with the die part.

  In the method of drilling holes in a deformed tubular body according to claim 8, after removing the spacer portion from between the die portion and the backup portion in a state where the scrap is stored in the hole of the spacer portion, the scrap is removed. It is characterized in that it is confirmed by the detecting means that the hole has fallen out of the hole.

  According to the invention of the present application, by removing the spacer from the die portion and the backup portion in a state where the scrap is stored in the hole of the spacer portion, the scrap can be discharged to the outside of the deformed pipe. As a result, the efficiency of the drilling operation can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows an example of a structure and arrangement | positioning of the deformed pipe hole drilling apparatus which concerns on this invention. It is a top view showing an example of a die part, a spacer part, and a backup part of the same variant pipe hole perforation device. It is explanatory drawing which shows operation | movement of the deformed pipe hole drilling apparatus. It is explanatory drawing which shows operation | movement of the deformed pipe hole drilling apparatus. It is explanatory drawing which shows operation | movement of the deformed pipe hole drilling apparatus. It is explanatory drawing which shows operation | movement of the deformed pipe hole drilling apparatus. It is explanatory drawing which shows operation | movement of the deformed pipe hole drilling apparatus. It is explanatory drawing which shows the groove | channel part of the die part, the spacer part, and the streak part of the same deformed pipe hole drilling apparatus.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is an explanatory view showing an example of the structure and arrangement of a modified pipe hole drilling device according to the present invention. FIG. 2 is a plan view showing an example of a die section, a spacer section, and a backup section of the modified pipe hole drilling device. 3 to 7 are explanatory views showing the operation of the modified pipe hole drilling device. FIG. 8 is an explanatory view showing a die portion, a groove portion, and a streak portion of a spacer portion of the modified pipe hole drilling device.

  In the deformed pipe hole drilling device 1 according to the present invention, both ends of the pipe body have through-holes in the peripheral wall of the intermediate portion Wc of the workpiece W which is a deformed pipe whose diameter is reduced as compared with the intermediate portion in the axial direction. It is for drilling Wd. The deformed pipe hole drilling device 1 is composed of a lower clamp 12, an upper clamp 14, a punch 16, an abutment member 18, a pressing guide unit 10, a die unit 20, a spacer unit 40, a backup unit 30, and the like.

  First, in the deformed pipe hole drilling device 1 according to the present invention, the work W for drilling the through-hole Wd has both ends Wa, Wb of the pipe body reduced in diameter as compared with the intermediate part Wc in the axial direction. The through hole Wd to be bored in the deformed pipe is, for example, an elliptical hole long in the axial direction of the workpiece W. In addition, the hole shape of the through-hole Wd is not limited to an elliptical shape, but has a desired shape and size. For this reason, the shape of the punch 16 described later, the die side hole 24 of the die part 20, and the like also have a desired shape and size.

  The punch 16 is for punching a through hole Wd in the peripheral wall of the intermediate portion Wc by pressing the work W from outside. Further, the lower clamp 12 and the upper clamp 14 hold the work W by sandwiching the vicinity of the intermediate portion Wc of the work W from above and below. The upper clamp 14 is provided with a clamp side hole 14a as a passage for the punch 16 to move toward the work W.

  The abutment member 18 is for positioning the work W with respect to the punch 16, the die unit 20, the backup unit 30, and the spacer unit 40 by bringing the periphery (end Wa) of one opening of the work W into contact. It is. Note that the abutting member 18 of the present embodiment has a structure capable of abutting on the end Wa of the work W while being housed in order to more accurately perform positioning.

  The press guide unit 10 abuts on the other end Wb of the work W and presses the work W in the axial direction of the work W. The press guide unit 10 is moved by the press guide arm 10a, and the work W is moved. The work W can be guided and moved in the axial direction.

  The die part 20 has a die 22 formed at the tip of a rod part 26 extending in a rod shape, and has a die side hole 24 having a shape and a position at which the punch 16 can be inserted through the die 22. The die portion 20 has a thickness such that the die portion 20 can be inserted into the work W from an opening at one end Wa of the work W as a whole. The die 22 has a shape capable of contacting the inside of the peripheral wall of the work W in which the through hole Wd is formed. It has a shape along the inside of the inner wall.

  The backup portion 30 has a support portion 32 formed at the tip of a bar portion 36 extending in a bar shape. The backup unit 30 has such a thickness that it can be inserted into the work W from an opening at one end Wa of the work W as a whole. Further, the support portion 32 has a shape capable of contacting the inside of the inner wall opposed to the inside of the peripheral wall of the work W in which the through hole Wd is formed, and basically contacts the inside of the peripheral wall of the work W of the support portion 32. The shape of the surface is a shape along the inside of the inner wall of the work W.

The spacer portion 40 has a hole 44 having a shape and a position capable of accommodating the cut waste We of the through hole Wd formed by the punch 16 in the bar portion 46 extending in a bar shape and having a larger opening than the die side hole 24. are doing. The spacer portion 40 has such a thickness that it can be inserted into the work W from an opening at one end Wa of the work W as a whole. Note that the groove portion 48 or the streak portion 28 extending in the axial direction is provided on each of the spacer portion 40 side of the die portion 20 and the die portion 20 side of the spacer portion 40 (see FIG. 8). When the spacer section 40 is inserted between the die section 20 and the backup section 30 as described later, the spacer section 40 comes into close contact with the die section 20 while the groove section 48 and the streak section 28 are fitted. Integrated. It is optional whether the groove is provided in the die part 20 or the spacer part 40 and the streaks are provided in which part.

  Next, the operation of the modified pipe hole drilling device 1 having such a configuration will be described. First, as shown in FIG. 3A, the lower clamp 12 and the upper clamp 12 are retracted with the die portion 20, the backup portion 30, and the spacer portion 40 retracted to the rear of the abutting member 18 (to the right in FIG. 3). The work W is held at an arbitrary position by the clamp 14. Then, the pressing guide 10 is brought into contact with the other end Wb of the work W, and the pressing guide 10 is moved in the axial direction of the work W (the direction of the arrow in FIG. 3A) by the pressing guide arm 10a. Thereby, the workpiece W is moved in the axial direction of the workpiece (the direction of the arrow in FIG. 3A). Then, as shown in FIG. 3B, the peripheral portion (end Wa) of one opening of the work W abuts on the abutment surface 18 a while being housed in the abutment member 18, so that the work W is Positioned.

  Next, as shown in FIGS. 4A and 4B, the die 20 is inserted into the work W through the opening 18b through the insertion hole 18b. Then, as shown in FIGS. 4C and 4D, the die portion 20 is moved so as to contact the inside of the inner wall where the through hole Wd of the work W is to be formed. Thereby, the die 22 of the die part 20 comes along the inside of the inner wall where the through hole Wd of the work W is to be formed.

  Next, as shown in FIGS. 5A and 5B, the backup portion 30 is inserted into the work W through the opening at the end Wa of the work W through the insertion hole 18b. Then, as shown in FIGS. 5C and 5D, the backup unit 30 is moved so as to contact the inside of the inner wall facing the inside of the inner wall where the through hole Wd of the workpiece W is to be formed. Thereby, the support part 32 of the backup part 30 comes along the inside of the inner wall facing the inside of the inner wall where the through hole Wd of the workpiece W is to be formed.

  Next, as shown in FIG. 6A, the spacer portion 40 is passed through the insertion hole 18b and the spacer portion 40 is inserted into the work W between the die portion 20 and the backup portion 30 from the opening of the end Wa of the work W. insert. At this time, the spacer section 40 is inserted into the die section 20 so that the groove section 48 of the spacer section 40 and the streak section 28 of the die section 20 are fitted and the spacer section 40 is tightly integrated with the die section 20. And the backup unit 30.

  Thereby, as shown in FIG. 6A, the die part 20, the spacer part 40 and the backup part 30 are arranged inside the position where the through hole Wd of the work W is to be formed, and the die side hole 24 is formed. And the hole 44.

  Then, as shown in FIG. 6B, in this state, the punch 16 is pressed from outside the intermediate portion Wc of the work W, so that the through hole Wd is formed in the peripheral wall. The punch 16 is pushed only up to the position of the die side hole 24 of the die portion 20, and the cut waste We enters the cut hole 44 of the spacer portion 40. However, since the back side of the support portion 32 of the backup portion 30 faces the lower side of the hole 44, the scrap We is kept in the hole 44 of the spacer portion 40.

  Next, the spacer portion 40 is removed from between the die portion 20 and the backup portion 30 in a state where the scrap We is stored in the removal hole 44 of the spacer portion 40. Then, as shown in FIG. 7A, the scrap We is moved together with the spacer part 40 while remaining in the hole 44 of the spacer part 40. Then, as shown in FIG. 7B, when the lower part of the hole 44 of the spacer portion 40 is opened, the scrap We drops off from the hole 44. As a result, the scrap We is discharged to the outside of the work W and separated from the die unit 20, the backup unit 30, and the spacer unit 40. Thereafter, the backup unit 30 and the die unit 20 are sequentially extracted from the work W, and the press guide unit 10, the lower clamp 12, and the upper clamp 14 are released from the work W, so that the work W having the through hole Wd is formed. Can be removed.

  According to the deformed pipe hole drilling device 1 configured as described above, with the cut waste We stored in the cut hole 44 of the spacer 40, the spacer 40 is connected to the die 20 and the backup 30. By extracting from the space, the scrap We can be discharged to the outside of the work W, so that the efficiency of the drilling operation can be improved.

  In addition, since the end Wa, which is the peripheral portion of one opening of the work W, is brought into contact with the abutting member 18, the work W is positioned with respect to the punch 16, the die 20, the backup unit 30, and the spacer 40. In addition, positioning at the time of drilling is performed only by the work W, and adjustment of the device is easy.

  Further, a groove portion 48 or a streak portion 28 extending in the axial direction is provided on the spacer portion 40 side of the die portion 20 and the die portion 20 side of the spacer portion 40, respectively. When inserted between the die part 20 and the spacer part 40, the groove part 48 and the streak part 28 are fitted and the spacer part 40 is tightly integrated with the die part 20. The displacement does not occur, and the positional relationship between the die side hole 24 of the die part 20 and the hole 44 of the spacer part 40 is accurately determined.

  Furthermore, after removing the spacer portion 40 from between the die portion 20 and the backup portion 30 in a state where the scrap We is stored in the removal hole 44 of the spacer portion 40, the scrap We dropped out of the removal hole 44. Is provided, it is possible to reliably recognize that the scrap We has fallen off, and to immediately start drilling of the next work W, and to perform drilling work. Efficiency can be improved.

  INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to provide a deformed pipe hole drilling device and a method of drilling holes in a deformed pipe, which can improve the efficiency of drilling work.

1 ··· Deformed pipe hole drilling device 10 ········································································································· 16 punch 18 abutment member 18a abutment surface 18b insertion hole 20 die part 22 die 24 die side hole 26 ··· Bar-shaped portion 28 ··· Streak portion 30 ··· Backup part 32 ··· Support portion 36 ··· Bar-shaped portion 40 ··· Spacer portion 44 ····· Punch hole 46 ··· .Bar-shaped portion 48... Groove

Claims (8)

In a modified pipe hole drilling device for drilling a through hole in a peripheral wall of the intermediate section of a modified pipe in which both ends of the pipe are reduced in diameter compared to the intermediate section in the axial direction,
A punch for punching the through-hole in the peripheral wall by pressing from outside the deformed pipe;
A die is formed at the tip of the rod-shaped portion extending in the shape of a rod, the die has a die-side hole having a shape and position through which the punch can be inserted, and the die is formed inside the peripheral wall of the deformed pipe in which the through-hole is formed. A die portion to which a die is inserted to be able to abut from one of the end openings;
An opening at the one end is formed such that a supporting portion is formed at a tip of a rod-shaped portion extending in a rod shape, and the supporting portion can be brought into contact with an inner wall facing the inner peripheral wall of the deformed pipe in which the through hole is formed. A backup part inserted from the
A punched hole having a shape and a position capable of accommodating a cutout of the through hole formed by the punch in a rod-shaped portion having a larger opening than the die-side hole is provided. A spacer part inserted from the opening of the one end between the first and second parts,
By removing the spacer from the space between the die portion and the backup portion in a state where the scrap is stored in the hole of the spacer portion, the scrap is discharged to the outside of the deformed pipe. An apparatus for drilling a hole in a deformed tubular body.   A punching member for positioning the deformed pipe with respect to the punch, the die section, the backup section, and the spacer section by contacting a peripheral portion of one opening of the deformed pipe is provided. An apparatus for perforating a modified tubular body according to claim 1. The spacer portion side of the die portion, and the die portion side of the spacer portion, each having a groove or streak extending in the axial direction,
When the spacer portion is inserted between the die portion and the backup portion, the groove portion and the streak portion are fitted, and the spacer portion is closely integrated with the die portion. The device for drilling a hole in a deformed pipe according to claim 1 or 2, wherein:   After removing the spacer from the space between the die portion and the backup portion in a state where the scrap is stored in the hole of the spacer portion, it is confirmed that the scrap is dropped from the hole. 4. The apparatus according to claim 1, further comprising a detection unit that performs the detection. 5. In a method of drilling a hole in a deformed pipe body for forming a through hole in a peripheral wall of the middle section of a deformed pipe whose both ends are reduced in diameter compared to the middle section in the axial direction,
A die is formed at the tip of the rod-shaped part extending in the form of a rod, and a die part having a die-side hole having a shape and a position at which a punch can be inserted into the die is inserted from an opening at one end of the deformed pipe,
The die portion is moved so that the die abuts on the inner side of the peripheral wall of the deformed pipe in which the through hole is formed,
A backup part having a support part formed at the tip of a rod part extending in a rod shape is inserted from an opening of the one end of the deformed pipe,
The backup portion is moved so that the support portion abuts on the inside of the inner wall facing the inside of the peripheral wall of the deformed pipe in which the through hole is formed,
A spacer portion having a hole having an opening larger than the die side hole, having a shape and a position capable of accommodating the cutout of the through hole formed by the punch in the rod-shaped portion, is formed as the die portion. Inserted through the opening at the one end between the backup unit and
By the punch, the through hole is formed in the peripheral wall by pressing from the outside of the deformed pipe,
In a state where the scrap is housed in the hole of the spacer portion, the spacer portion is removed from between the die portion and the backup portion to discharge the scrap to the outside of the deformed pipe. A method for drilling a hole in a deformed tubular body. Prior to inserting the die portion into the deformed tube,
6. The positioning of the deformed tube with respect to the punch, the die, the backup portion and the spacer by bringing a peripheral portion of one opening of the deformed tube into contact with the protruding portion. Method of drilling holes in deformed tubular bodies.   A groove portion or a streak portion extending in the axial direction is provided on each of the die portion side of the die portion and the die portion side of the spacer portion, and the spacer portion is provided between the die portion and the backup portion. 7. The deformed pipe according to claim 5, wherein when inserted into the groove, the spacer is closely integrated with the die while the groove and the streaks are fitted. How to drill holes in the body.   After removing the spacer portion from between the die portion and the backup portion in a state where the scrap is housed in the hole of the spacer portion, that the scrap is dropped from the hole. The method according to any one of claims 5 to 7, wherein the confirmation is performed by a detecting means.

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