JPH08261B2 - Device for forming spiral corrugations on cylindrical metal tubes - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

TECHNICAL FIELD The present invention relates to an apparatus for forming a spiral corrugation on a metal cylindrical tube capable of forming a spiral corrugation on a wall of a metal cylindrical tube in a desired shape over a predetermined entire range.

[Prior art and problems]

The metal corrugated pipe with spiral corrugations on the wall improves the heat transfer coefficient when exchanging heat inside and outside the pipe, improves rigidity and strength, and expands and contracts slightly in the axial direction. It has been widely used in recent years because it has various effects such as that it can also be applied to, and is decoratively interesting. Heretofore, there have been known some methods for forming a spiral corrugation on the tube wall of a metal cylindrical tube. For example, in Japanese Examined Patent Publication No. 53-25830, one end of a metal cylindrical tube is fixed to be non-rotatable, and a locally fixed pressure is applied to the tube wall to locally apply a radial pressure to the metal cylindrical tube. A method is shown in which the groove formed is axially grown along the spiral passage by twisting the other end. However, according to this method, the formation of the spiral corrugation is based on the peaks and troughs respectively generated at the points where local pressure is generated on the tube wall by the projections and the intermediate points. Therefore, the spiral corrugation is formed into a substantially regular shape in the range near the formation start point, but as it goes away, the corrugated shape tends to become nonuniform, and the shape is good over the entire length of the metal cylindrical tube. In order to form a substantially uniform waveform, the material of the metal cylindrical tube was limited in its hardness, elongation, etc. to an extremely narrow range, so it was difficult to implement. Further, in U.S. Pat. No. 3,606,780, a cored bar having a corrugated surface is inserted into a material cylindrical tube to form an insertion set, and the cored bar faces spiral ridges and grooves, respectively. Set the insertion set close to the forming roller having grooves and corrugations on the surface, and make the forming roller strong with the cylindrical tube of material sandwiched between the corrugations of the cored bar and the corrugation of the forming roller. It is described that a corrugation corresponding to the corrugation on the surface of the cored bar is formed on the cylindrical tube of material by rotating the cored tube and rotating the cored tube with the cored bar while rotating. However, according to this method, when the diameter of the metal cylindrical tube is slightly different, or when a corrugated shape having a different shape is formed, it is necessary to replace the cored bar or the forming roller with a suitable one each time or newly manufacture. Therefore, it is not suitable for the production of various kinds of small quantities, and the forming apparatus is expensive.

[Means for solving problems]

The present invention provides an apparatus for solving the above-mentioned problems of the prior art. According to a first aspect of the present invention, a spindle head which is rotated by power is mounted on a spindle head whose position is fixed, and a cylindrical tube holding for holding and rotating a metal cylindrical tube to be processed on an extension of the spindle. A chuck is provided at one end of the main shaft, and a movable base having a cylindrical pipe through hole for penetrating a metal cylindrical pipe to be processed on the extension of the main shaft for holding the cylindrical pipe is provided along the extension line. Rotatable pressure rotation that is installed movably by power and presses the tube wall of a metal cylindrical tube that is held by the cylindrical tube holding chuck of the main shaft and that penetrates the cylindrical tube through hole to make it concave. The present invention relates to an apparatus for forming a spiral corrugation on a metal cylindrical tube, wherein a body is provided on the movable table in the vicinity of the opening of the cylindrical tube through hole. According to a second aspect of the present invention, in the first aspect of the present invention, a cylindrical pipe holding chuck for holding and rotating the metal cylindrical pipe to be processed on an extension of the main shaft is provided at one end of the main shaft. At least the cylindrical tube holding chuck position is provided with a holding sleeve that holds the metal cylindrical tube between the cylindrical tube holding chuck and the cylindrical tube holding chuck. According to a third aspect of the present invention, in the first aspect of the present invention, a mandrel having an outer diameter smaller than an inner diameter of a metal cylindrical pipe to be processed is provided in a main shaft which is provided on a positionally fixed main spindle head and is rotated by power. It is composed of a hollow tube having a mandrel through hole inserted therein. In a fourth aspect of the present invention according to the first aspect of the present invention, a moving table having a cylindrical tube through hole for penetrating a metal cylindrical tube processed on the extension of the main shaft for holding the cylindrical tube is further provided with the cylindrical tube through hole. A supporting sleeve is provided inside which the inner peripheral surface of the metal cylindrical tube can be brought into contact with and slid on. Hereinafter, an apparatus for forming a spiral corrugation on a metal cylindrical tube according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view schematically showing a state in which a spiral corrugation is formed on the tube wall of a metal cylindrical tube by the device of the present invention,
FIG. 2 is an overall explanatory view for explaining each device of the present invention, and FIG. 3 is an A- line in FIG. 2 in the case of the device of the first invention.
A sectional view taken along the line A, FIG. 4 is a sectional view taken along the line AA in FIG. 2 in the case of the second present invention device, and FIG. 5 is a sectional view taken along the line A- in the case of the third present invention device. A sectional view taken along the line A, FIG. 6 is an end view taken along the line BB in FIG. 2 in the case of the third invention device, and FIG. 7 is an end surface corresponding to FIG. 6 in the case of the fourth invention device. 8 and 9 are cross-sectional explanatory views showing a state in which the movable table side of the mandrel is positioned and a state in which the end portion of the supporting sleeve is fixed, respectively, and FIG. 9 is CC in FIG.
It is a line end view. The first device of the present invention is configured as follows. That is, as shown in FIG. 2, for example, a main spindle 4 which is rotated by transmitting power from a motor 7 via a speed reducer (not shown) to a main spindle head 3 fixed on a bed 16 is mounted. In addition, a cylindrical tube holding chuck 5 for holding and rotating the metal cylindrical tube 2 to be processed on an extension of the main shaft 4 is provided at one end of the main shaft 4.
A movable table 8 having a cylindrical tube through hole 9 for penetrating the metal cylindrical tube 2 processed on the extension of the main shaft 4 on the side of the cylindrical tube holding chuck 5 can be moved along the extension line by, for example, the power of a motor 10. And a rotatable pressurizing rotary body 1 for pressurizing and denting the tube wall of the metallic cylindrical tube 2 held by the cylindrical tube holding chuck 5 of the main shaft 4 and penetrating the cylindrical tube through hole 9. Is provided on the moving table 8 in the vicinity of the opening of the cylindrical tube through hole 9. As the chuck 5 for holding the cylindrical tube, a commonly used chuck can be used. For example, the chuck shown in FIG.
The chuck body 5b can be pressed firmly against the outer surface of the metal cylindrical tube 2 by hydraulic pressure or screws to hold it.
It is attached to 5a. In the apparatus shown in FIG. 2, the cylindrical tube through hole 9 of the movable table 8 is provided not only through the main body of the movable table 8 but also through a chuck 12 for holding a pressure rotary body arm which will be described later. As shown in FIGS. 2 and 6, this cylindrical tube through hole 9 has at least a part of the through hole having a large diameter from the opening on the side where the pressure rotating body 1 is provided on the outer circumference of the metal cylindrical tube 2. It may be formed by fitting and fixing a guide sleeve 11 capable of abutting and sliding the surface. The state in which the pressure rotating body 1 is provided in the vicinity of the opening of the cylindrical tube through hole 9 of the moving table 8 is shown in FIG.
That is, the pressure rotating body arm holding chuck 12 is provided at the side end of the moving table 8 through which the metal cylindrical tube 2 penetrates, and the cylindrical tube through hole 9 is held from the main body of the moving table 8 to hold the pressing rotating arm. One or a plurality of pressure-rotating body arms 13 having the pressure-rotating body 1 mounted therein are provided so as to penetrate to the chuck 12 for use, and the pressure is applied to the opening of the cylindrical tube through hole 9 in the vicinity thereof. The metal cylindrical tube 2 in which the rotating body 1 penetrates the cylindrical tube penetrating item 9
The chuck 12 for holding the rotating body arm of the pressurizing body is arranged at a position where the
Attached to. When there are a plurality of pressure rotating bodies 1, the pressure rotating body arms 13 are attached so that they are arranged at equal intervals on the same cross section of the metal cylindrical tube 2. There are two modes in which each pressure rotating body 1 is mounted on the pressure rotating body arm 13. One is a mode in which the rotating surface is fixed in a predetermined direction, that is, in a direction that coincides with a lead angle β designed in advance. In this case, when changing the direction of the rotating surface, the fixed state can be released once, the direction can be adjusted, and the rotating surface can be fixed again. The other one is a mode in which the rotating surface is mounted so that its direction can be changed, for example, like a caster. Although the pressure rotator 1 is provided on the spindle head 3 side of the movable table 8 in FIG. 2, it may be provided on the opposite side. As a device for moving the movable table 8 along the extension line of the main shaft 4, for example, as shown in FIG. 2, the rack 14 is fixed on the bed 16 in parallel with the extension line of the main shaft 4, and the pinion is meshed with the rack 14. 15 may be attached to the moving table 8 so that the cylindrical tube through hole 9 is located on the extension of the main shaft 4, and the power of the motor 10 may be transmitted to the pinion 15 via a speed reducer (not shown). The apparatus of the second aspect of the present invention is the apparatus of the first aspect of the present invention, in which a cylindrical tube holding chuck 5 for holding and rotating the metal cylindrical tube 2 to be processed on an extension of the main axis 4 is provided at one end of the main axis 4. In addition to the above, a holding sleeve 6 for holding the metallic cylindrical tube 2 between the cylindrical tube holding chuck 5 and the cylindrical tube holding chuck 5 is provided at least at the position of the cylindrical tube holding chuck 5 as shown in FIG. Is. When the main shaft 4 is a hollow pipe, the holding sleeve 6 may be inserted from the cylindrical pipe holding chuck 5 portion to the hollow portion of the main shaft 4, and may not be fixed to the main shaft 4. It may be fitted in the holding portion of the metal cylindrical tube 2 each time. The third device of the present invention is the same as the first device of the present invention, except that the main spindle 4 provided on the positionally fixed main spindle head 3 and rotated by power is made of a metal to be processed as shown in FIG. It is a hollow tube having a mandrel through hole 18 into which a mandrel 17 having an outer diameter smaller than the inner diameter of the cylindrical tube 2 is inserted. This mandrel 17 has a second
As shown in FIGS. 5 and 5, through the cylindrical tube through hole 9 of the movable table 8 and through the mandrel through hole 18, the metal cylindrical tube 2 to be processed held by the chuck 5 for holding the cylindrical tube is penetrated. The depth at which the tube wall of the metal cylindrical tube 2 is recessed by the pressure rotator 1, that is, the bottom diameter of the spiral corrugated groove as shown in FIG. Mandrel
It is preferable that the grip 17 is provided with a grip 17a for facilitating the insertion / removal operation into / from the metal cylindrical tube 2.
When the holding sleeve 6 is used, the inner diameter of the holding sleeve 6 is larger than the outer diameter of the mandrel 17, as shown in FIG. In the mandrel through hole 18 of the main shaft 4, there is provided a support portion (not shown) for positioning the mandrel 17 so that the axis of the mandrel 17 coincides with the tube axis X of the metal cylindrical tube 2 set as described above. It is provided. This support is
In the case where the main shaft 4 is a hollow tube and the holding sleeve 6 is inserted from the position of the chuck 5 for holding the cylindrical tube into the main shaft 4, at least a part of the mandrel through holes 18 other than the insertion portion in the main shaft 4 The diameter may be adjusted to the outer diameter of the mandrel 17 and slidably arranged at the corresponding position. It is not always necessary to provide a supporting portion also on the movable table 8 side in order to match the axis of the mandrel 17 with the tube axis X of the metal cylindrical tube 2 as described above, when the pressure rotating body 1 is plural. However, even if there is only one and preferably a plurality of pressure rotating bodies 1, the mandrel 17 is penetrated to the outside of the moving table 8 on the side opposite to the pressure rotating body 1 as shown in FIG. It is preferable to provide a positioning frame 19 having a positioning hole 19a for sliding by sliding. In the device of the fourth aspect of the present invention, as shown in FIG. 7, in the device of the first aspect of the present invention, the inner peripheral surface of the metal cylindrical tube 2 can be slid on the moving base 8 in the cylindrical tube through hole 9. A supporting sleeve 20 is provided. In this case, the end of the supporting sleeve 20 farther from the spindle head 3 is further than the position of the end of the metallic cylindrical tube 2 on the corrugated side from the pressure rotor 1 at the start of the spiral corrugation formation. At a position outside the moving base 8 as shown in FIG.
It is fixedly supported by 21. In this device, a mandrel 17 having an inner diameter of the supporting sleeve 20 or less is used. The support frame 21 includes a mandrel 17 and a support sleeve 20.
Since it is inserted into the positioning frame 19, it is located closer to the movable table 8 than the positioning frame 19. Support at other points for determining the overall position of the supporting sleeve 20 is not always necessary when there are a plurality of pressure rotating bodies 1, but the same purpose can be obtained when there is one and preferably a plurality of rotating bodies. The metal cylindrical tube 2 penetrated through the cylindrical tube through hole 9 as
It is preferable to provide a support device (not shown) for supporting the outer side of the above, for example, in the vicinity of the opening of the cylindrical tube through hole 9 on the side of the pressure rotating body 1. In each of the devices of the present invention described above, the diameter of the cylindrical tube through hole 9 is made large, and when the holding sleeve 6, the guide sleeve 11, and the supporting sleeve 20 are provided, the outer diameter, the inner diameter, and the outer diameter are different from each other. By preparing various materials, it is possible to deal with the case where the diameter of the metal cylindrical tube 2 to be processed changes. Further, in the device using the mandrel 17, the diameter of the mandrel through hole 18 is made slightly larger and various mandrels 17 having different diameters are prepared to form a spiral corrugation at various depths. Just be prepared in case. The above-mentioned second to fourth invention devices are obtained by adding additional constituent elements to the first invention device, respectively. However, as an application of the invention device, some or all of these additional constituent elements are applied. It may be added to the first device of the present invention. As the metal cylindrical tube 2 to be processed, in addition to a normal metal cylindrical tube, a metal cylindrical tube whose surface is covered with a plastic film can be used. For example, a heat-shrinkable vinyl tube (for example, Mitsubishi Plastics Co., Ltd., trade name: Hishitube) with a heat shrinkage rate of 40 to 50% is covered with a normal metal cylindrical tube and heated at about 100 ° C to shrink sufficiently. Can be used.

[Embodiment method and operation of the device of the present invention]

In order to form a spiral corrugation on the metal cylindrical tube 2 using the apparatus of the present invention having the above-described structure, first, the movable base 8 is charged and separated from the main spindle head 3 side to be processed. Is positioned on the extension of the main shaft 4 and held by the cylindrical tube holding chuck 5. When the holding sleeve 6 is present, it is fitted into the metal cylindrical tube 2 and then held as described above, thereby preventing the metal cylindrical tube 2 from being deformed or damaged by the pressure of the cylindrical tube holding chuck 5. be able to. Next, in the moving table 8, the pressurizing rotary body 1 is previously separated to a position where it does not come into contact with the metallic cylindrical tube 2, and then the moving table 8 is moved to the main spindle head 3 side to penetrate the metallic cylindrical tube 2 into the cylindrical tube. The hole 9 is penetrated. At this time, when the cylindrical tube through hole 9 is formed by the guide sleeve 11, the metallic cylindrical tube 2 slides through the guide sleeve 11 to penetrate the metallic cylindrical tube 2 so that the metallic cylindrical tube 2 is rotated by the spindle 4.
Will be accurately positioned at the position on the extension of.
Further, when the supporting sleeve 20 is provided, the metal cylindrical tube 2 is positioned in the same manner as above by penetrating the supporting sleeve 20 with the supporting sleeve 20 fitted thereto. It is possible to prevent the abnormal deformation of the metal cylindrical tube 2 due to the pressurization of 1. In the case of a device having a mandrel through hole 18 in the spindle head 3, the mandrel 17 is inserted into the mandrel through hole 18 from the side opposite to the chuck 5 for holding the cylindrical tube so that the mandrel 17 matches the tube axis X of the metal cylindrical tube 2. The metal cylindrical tube 2 is made to penetrate through the supporting portion for positioning so as to perform. If the positioning frame 19 is provided, its positioning hole
By penetrating the tip of the mandrel 17 into 19a,
The mandrel 17 is accurately held at a position where the axis of the mandrel 17 coincides with the tube axis X of the metal cylindrical tube 2, and the depth of the groove can be more accurately equalized when a spiral corrugation is formed, which will be described later. When the setting of the metal cylindrical tube 2 is completed in this way, then the movable table 8 is brought closer to the main spindle head 3 side and the pressurizing rotary member 1 is moved.
Is positioned at the starting point of the spiral corrugated formation scheduled area of the metal cylindrical tube 2, and is adjusted by operating a hydraulic valve or a screw to pressurize the metal cylindrical tube 2 with the pressurizing rotary body 1 to make a recess at a predetermined depth. No
When the mandrel 17 is used, the depth of the concave portion, that is, the depth of the spiral corrugated groove is limited by the mandrel 17 even if the pressing force of the pressurizing rotary body 1 is excessive. The adjustment is easy by setting the range. When the metal cylindrical tube 2 is supported by being fitted onto the supporting sleeve 20, it is supported even if the tube wall of the metal cylindrical tube 2 is pressed by the pressurizing rotary body 1 in the immediate vicinity of the supporting sleeve 20. It is possible to prevent abnormal deformation of the portion. Next, as described above, the motor 7 is operated while the metal cylindrical tube 2 is being pressurized by the pressure rotating body 1 to rotate the metal cylindrical tube 2 at a predetermined rotation speed n, and at the same time, the motor 10 is operated to move. By moving the platform 8 in a direction away from the spindle head 3 on the extension of the spindle 4 at a predetermined moving speed v, as shown in FIG. It is possible to form a spiral waveform of the lead angle β. The predetermined pitch and lead angle are represented by the following equations. That is, Here, p: pitch β: lead angle v: moving speed of moving table i: number of pressure rotors n: rotational speed of metal cylindrical tube d: outer diameter of metal cylindrical tube. Since the number of leads is i times the pitch p, when there is one pressure rotating body 1, the leads and the pitch p are the same and a single waveform is formed. In that case, a plurality of corrugations corresponding to that number are formed. The waveform shown in FIG. 9 is the case where three pressure rotators 1 form three ridges. The spiral corrugation can also be formed to a predetermined depth with respect to the depth of the groove when the mandrel 17 is used, and can be formed almost even when the mandrel 17 is not used. When the spiral waveform is formed in the predetermined range of the metal cylindrical tube 2, the rotation of the metal cylindrical tube 2 and the movement of the moving table 8 are stopped, and the pressure applied state of the pressure rotating body 1 is released to release the metal. Separate from the cylindrical tube 2 and, if the mandrel 17 is used, remove the mandrel 17, move the moving table 8 further, and loosen the cylindrical tube holding chuck 5 to make a spiral corrugated metal. The cylindrical tube 2 is taken out. In order to facilitate the removal operation of the mandrel 17, it is preferable to apply a lubricant to the outer surface of the mandrel 17 in advance. When using metal cylindrical tubes 2 having different outer diameters or inner diameters, a holding sleeve 6, a guide sleeve 11, and a supporting sleeve 2 are used.
In the device using 0, the outer diameter, the inner diameter, and the outer diameter may be replaced with those that match the metal cylindrical tube 2.
When changing the pitch p of the spiral waveform, the lead angle β, and the depth of the groove, the rotational speed n of the metal cylindrical tube 2 and the moving speed v of the movable table 8 may be changed for the former two cases. For the latter, adjust the pressure of the pressure rotor 1 and
In an apparatus using 17, the mandrel 17 having a diameter suitable for the depth of the groove may be replaced.

【The invention's effect】

As described above, according to the device of the present invention, the metal held by the chuck for holding the cylindrical tube provided on the main shaft in a state where the tube wall of the metal cylindrical tube to be processed is recessed by the rotatable pressure rotating body. The rotating speed of the metal cylinder tube and the moving speed of the pressurizing body are adjusted by rotating the pressurizing body installed on the moving table along the tube axis while rotating the cylindrical tube. Further, it is extremely easy to form mandrel having different diameters by exchanging, and to form spiral corrugations of various shapes in a predetermined entire range according to a desired shape. Also, when using various metal cylindrical pipes with different outer and inner diameters, if necessary, by replacing the holding sleeve, guide sleeve, and supporting sleeve with other diameters that can be prepared at a low cost, The same device can be used, which is extremely economical.

[Brief description of drawings]

FIG. 1 is an explanatory view briefly showing a state where a spiral corrugation is formed on a tube wall of a metal cylindrical pipe by the device of the present invention, and FIG. 2 is an overall explanatory view for explaining each device of the present invention, Third
The figure shows AA in FIG. 2 in the case of the first device of the present invention.
FIG. 4 is a sectional view taken along line AA in FIG. 2 in the case of the device of the second invention, and FIG. 5 is AA in FIG. 2 in the case of the device of the third invention. Line sectional view, FIG. 6 is the third
2 is an end view taken along the line BB in FIG. 2 in the case of the present invention device, FIG. 7 is an end view corresponding to FIG. 6 in the case of the fourth present invention device, and FIG. 8 is the mandrel moving table side. And FIG. 9 is a cross-sectional explanatory view showing a state in which is positioned and a state in which the end portion of the supporting sleeve is fixed, and FIG. 9 is C-C in FIG.
It is a line end view. In the drawing 1 …… Pressurized rotating body 2 …… Metal cylinder tube 3 …… Spindle head 4 …… Spindle 5 …… Cylinder tube holding chuck 5a …… Chuck body 5b …… Chuck claw 6 …… Holding sleeve 7 ...... Motor 8 ...... Moving base 9 ...... Cylindrical tube through hole 10 ...... Motor 11 ...... Guide sleeve 12 ...... Pressurizing rotator arm holding chuck 13 ...... Pressurizing rotator arm 14 ...... Rack 15 ... … Pinion 16 …… Bed 17 …… Mandrel 17a …… Mandrel grip 18… Mandrel through hole 19… Positioning frame 19a… Positioning hole 20… Supporting sleeve 21… Supporting frame X… Pipe axis

Continuation of the front page (72) Inventor Koji Kobayashi 460 Tomitake, Nagano, Nagano City, Nagano (56) Bibliographic references Shoko 49-14750 (JP, Y1)

Claims (23)

[Claims] 1. A chuck for holding a cylindrical tube, wherein a main shaft head fixed in position is equipped with a main shaft that is rotated by power, and a metal cylindrical pipe to be processed is held and rotated on an extension of the main shaft. Is provided at one end of the main shaft, and a movable table having a cylindrical pipe through hole for penetrating a metal cylindrical pipe to be processed on the extension of the main shaft for holding the cylindrical pipe is provided along the extension line by power. A rotatably pressurizing rotating body that is installed movably, presses the tube wall of the metal cylindrical tube that is held by the cylindrical tube holding chuck of the main shaft and that penetrates the cylindrical tube through hole, and dents the tube wall. An apparatus for forming a spiral corrugation on a metal cylindrical tube, which is provided on the movable table in the vicinity of the opening of the cylindrical tube through hole. 2. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to claim 1, wherein there is one pressure rotating body. 3. A spiral corrugation is formed on a metal cylindrical tube according to claim 1, wherein a plurality of pressure rotating bodies are arranged on the same cross section of the metal cylindrical tube. apparatus. 4. A spiral corrugated shape is formed on the metal cylindrical tube according to claim 1, wherein the rotating surface of the pressurizing rotary member is fixed in a predetermined direction. Forming device. 5. A device for forming a spiral corrugation on a metal cylindrical tube according to any one of claims 1 to 3, wherein the surface of rotation of the pressurizing rotary member is directional. . 6. The cylinder sleeve through-hole, at least a part of which extends from the opening on the side where the pressure rotor is installed, is formed by a guide sleeve capable of abuttingly sliding on the outer periphery of the metal cylinder tube. A device for forming a spiral corrugation on the metal cylindrical tube according to any one of items 1 to 5. 7. A cylindrical tube holding chuck for holding a metal cylindrical tube to be processed on an extension of the main shaft, wherein a main shaft which is rotated by power is mounted on a main spindle head whose position is fixed. Is provided at one end of the spindle, and a holding sleeve for holding the metal cylindrical tube between the cylindrical tube holding chuck and the cylindrical tube holding chuck is provided at least at the cylindrical tube holding chuck position. A movable table having a cylindrical tube through hole for penetrating a metal cylindrical tube to be processed on an extension of the chuck for holding the cylindrical tube is installed so as to be movable by power along the extension line. A rotatable rotatable pressurizing body that presses the tube wall of the metal cylindrical tube that is held by the chuck for piercing the through hole of the cylindrical tube and dents the wall of the metal tube near the opening of the through hole of the cylindrical tube. Installed on the table Apparatus for forming a helical waveform that has a metal cylindrical tube and said. 8. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to claim 7, wherein there is one pressure rotating body. 9. A spiral corrugation is formed on a metal cylindrical tube according to claim 7, wherein a plurality of pressure rotating bodies are arranged on the same cross section of the metal cylindrical tube. apparatus. 10. A spiral corrugation is provided on the metal cylindrical tube according to claim 7, wherein the rotating surface of the pressurizing rotary member is fixed in a predetermined direction. Forming device. 11. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to any one of claims 7 to 9, wherein the rotating surface of the pressing rotary member is directional. . 12. The guide sleeve according to claim 7, wherein at least a part of the through hole of the cylindrical tube from the opening on the side where the pressing rotary member is installed is formed by a guide sleeve capable of abuttingly sliding on the outer circumference of the metallic cylindrical tube. An apparatus for forming a spiral corrugation on the metal cylindrical tube according to any one of items 1 to 11. 13. A hollow tube having a mandrel through hole, into which a mandrel having an outer diameter smaller than the inner diameter of a metal cylindrical tube to be machined on a spindle head fixed in position is inserted, and rotated by power. Is attached, a cylindrical pipe holding chuck for holding and rotating a metal cylindrical pipe to be processed on an extension of the main shaft is provided at one end of the main shaft. A movable table having a cylindrical tube through hole for penetrating a metal cylindrical tube machined on the extension of the holding chuck is installed so as to be movable by power along the extension line, and the cylindrical tube holding chuck of the spindle is provided. A rotatable rotatable pressurizing member that presses and dents the tube wall of the metal cylindrical tube that is held in the cylindrical tube through hole and is close to the opening of the cylindrical tube through hole, Provided Apparatus for forming a helical waveform metallic cylindrical tube, characterized in that. 14. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to claim 13, wherein there is one pressure rotating body. 15. The spiral corrugation is formed on the metal cylindrical tube according to claim 13, wherein a plurality of pressure rotating bodies are arranged on the same cross section of the metal cylindrical tube. apparatus. 16. A spiral corrugation is formed on the metal cylindrical tube according to claim 13, wherein the rotation surface of the pressure rotating body is fixed in a predetermined direction. Forming device. 17. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to any one of claims 13 to 15, wherein the surface of rotation of the pressurizing rotary member is directional. . 18. The cylindrical sleeve through-hole, at least a part of which extends from the opening for the pressure rotor installation side, is formed by a guide sleeve capable of abuttingly sliding on the outer periphery of the metallic cylindrical tube. An apparatus for forming a spiral corrugation on the metal cylindrical tube according to any one of items 1 to 17. 19. A cylindrical tube holding chuck for holding a metal cylindrical tube to be processed on an extension of the main shaft, wherein a main shaft which is rotated by power is mounted on a main shaft head whose position is fixed. Is provided at one end of the main shaft, has a cylindrical pipe through hole that penetrates a metal cylindrical pipe to be processed on the extension of the main shaft for holding the cylindrical pipe, and the metal is provided in the cylindrical pipe through hole. A movable base provided with a supporting sleeve capable of abuttingly sliding on the inner peripheral surface of the manufactured cylindrical tube is installed movably by power along the extension line, and is attached to the cylindrical tube holding chuck of the main shaft. A rotatable pressurizing rotator for pressurizing and denting the tube wall of the metal cylindrical tube that is held and penetrates the cylindrical tube through hole is provided with the movable table near the opening of the cylindrical tube through hole. A metal circle characterized by being Apparatus for forming a spiral wave tube. 20. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to claim 19, wherein the number of pressure rotating bodies is one. 21. A spiral corrugation is formed on a metal cylindrical tube according to claim 19, wherein a plurality of pressure rotating bodies are arranged on the same cross section of the metal cylindrical tube. apparatus. 22. A spiral corrugated shape is added to the metal cylindrical tube according to claim 19, wherein the rotating surface of the pressure rotating body is fixed in a predetermined direction. Forming device. 23. An apparatus for forming a spiral corrugation on a metal cylindrical tube according to any one of claims 19 to 21, wherein the rotation surface of the pressure rotating body is directional. .