JPH06236Y2 - Thin end plate welding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a thin end plate welding apparatus suitable for welding the front and rear end plates of a space rocket chamber and a boss.

[Conventional technology]

Circumferential welding between the front and rear thin-walled mirror plates of the space rocket chamber and the boss attached to the axial center of the space rocket chamber is conventionally performed by temporary welding, but to improve work efficiency and accuracy, gas shield is used. It is desirable to have automatic welding such as arc welding and electron beam welding.

However, for automatic welding, a device that corrects the relative displacement near the welding groove and fixes and supports them in the groove alignment work between the thin end plate by press forming and the boss by machining is required. It is preferable that the supporting device can be used for both gas shielded arc welding and electron beam welding in order to secure welding dimensional accuracy. Note that the thin end plate and the circumferential welded portion of the boss, which have become thinner as the strength of the material becomes stronger, are likely to cause welding deformation, and even in electron beam welding, deformation occurs due to overlapping of beads. It must be controllable.

[Problems to be solved by the device]

The present invention has been proposed in view of such circumstances,
It is possible to correct the relative displacement of the welding groove and to fix and support the thin end plate and the boss, and to control the deformation during welding of both, and can be used for both gas shield arc welding and electron beam welding. It is an object of the present invention to provide a thin end plate welding device.

[Means for Solving the Problems]

Therefore, the present invention is a device for fixedly supporting a thin end plate in a downward posture and a boss in a posture in which a circumferential groove is aligned with an axial center portion of the thin end plate, which is mounted on a column extending through the axial center of the end plate and the boss. And an outer peripheral surface of the mirror plate support plate abutting the inner surface near the groove of the end plate, a boss support plate mounted on the end plate supporting plate and an outer peripheral surface of the boss abutting the inner surface near the groove of the boss, A beam stopper housed in a ring groove engraved on the outer peripheral upper surface at a groove facing position, a shield gas ejection hole that opens into the ring groove, and a leg that is erected on the outside of the end plate of the end plate of the end plate. An end plate pressing plate that presses the outer surface near the groove, and a boss pressing plate that is held on the upper end of the column and presses the outer surface near the groove of the boss.

[Action]

With the above structure, the relative displacement of the welding groove can be corrected to fix and support the thin end plate and the boss, and the deformation during welding of both can be suppressed, and further in gas shield arc welding and electron beam welding. It is possible to obtain a thin-walled end plate welding device that can be shared.

〔Example〕

An embodiment of the thin end plate welding device of the present invention will be described with reference to FIG.

In FIG. 1, a thin end plate 1 in a downward posture and a boss 2 which is circumferentially welded to its axial center are abutted at a groove 3 and fixedly held by a device described below. That is, the gas supply plate 7 is mounted by the screw nut 6 on the threaded portion in the upper region of the column 5 which is vertically erected at the center of the positioner face plate 4, and the outer peripheral surface has the outer peripheral surface on the inner surface near the groove of the end plate 1. An end plate supporting plate 8 which is in contact with the center of the column 5 and through which the supporting column 5 penetrates is placed, and both plates 7 and 8 are fixed by bolts 9. Both plates 7, 8
An annular shield gas puddle 10 is provided on the contact surface of the gas supply port 10, a gas supply port 11 formed in the gas supply plate 7 communicates with the shield gas puddle 10, and O-rings are provided on both sides of the shield gas puddle 10. 12 are provided.

Further, a ring groove 13 is engraved at a position facing the groove 3 on the upper surface of the outer peripheral surface of the end plate support plate 8, a beam stopper 14 is housed in the inner depth of the ring groove 13, and the shield gas reservoir 10 communicates with the lower bottom portion. A plurality of shield gas ejection holes 15 are formed on the circumference at an equal pitch.

Further, on the end plate supporting plate 8, a boss supporting plate 16 whose outer peripheral surface abuts on the inner surface in the vicinity of the groove of the boss 2 and through which the support column 5 penetrates the central portion.
Is mounted, and a nut 17 is screwed onto the support 5 on the upper surface of the boss 2 supported by the boss support plate 16.

It should be noted that legs 18 are erected on the circumference of the positioner face plate 4 at equal pitches of 6 to 8 on the circumference, and an end plate holding plate 19 is held by a nut 20 at the upper end portion thereof.
A boss pressing plate 21 is held by a nut 22 at the upper end of the.

In such an apparatus, the nut 6 supplies the gas supply plate 7
And the height of the end plate support plate 8 is adjusted to adjust the height positions of the end plate 1 and the boss 2 which are the objects to be welded, and the nut 17 is tightened to bring the boss 2 into close contact with the boss support plate 16.
The end plate 1 and the boss 2 are brought into close contact with each other at the groove 3. Further, the nut 20 and the nut 22 are tightened to press and restrain the outer surface near the groove of the end plate 1 and the outer surface near the groove of the boss 2 by the end plate pressing plate 19 and the boss pressing plate 21, respectively. When performing the gas shield arc welding, the shield gas is supplied from the gas supply port 11 to the shield gas reservoir 10 and is ejected from the shield gas ejection hole 15 to the back surface of the groove 3.

In this device, the electron beam welding beam stopper 14 is made of a material that does not adversely affect the materials of the end plate 1 and the boss 2, but other members are made of stainless steel, which is resistant to rust,
Copper, aluminum or the like may be used. Even if the beam stopper 14 is attached during gas shielded arc welding, it does not interfere with the welding, and if the beam stopper 14 becomes more prone to damage by electron beam welding, it is replaced with another part.

Thus, according to such a device, the end plate support plate 8 and the boss support plate 16 allow the inside and outside of the groove of the end plate 1 and the boss 2 to move.
The inner surface of the groove near the groove is supported, and the end plate 1
Since the outer surface of the end plate 1 near the groove and the outer surface of the boss 2 near the groove are constrained by the boss holding plate 9 and the boss holding plate 21, the end plate 3 and the boss 2 are fixedly supported by aligning the groove 3 correctly and at the time of welding. The deformation of is accurately suppressed.

Further, according to such an apparatus, the beam stopper 14 is housed in the ring groove 13 of the end plate supporting plate 8 to receive the penetrating electron beam, and the shield gas ejection hole 15 for gas shield arc welding is provided in the ring groove 13. Since the shielding gas is ejected, it can be used for both gas shield arc welding and electron beam welding.

[Effect of device]

In short, according to the present invention, there is provided a device for fixedly supporting a thin end plate in a downward posture and a boss in a posture in which a circumferential groove is aligned with an axial center portion of the thin end plate, which is mounted on a column passing through the axial center of the end plate and the boss. An end plate support plate which is mounted and whose outer peripheral surface abuts the inner surface near the groove of the end plate, a boss support plate which is placed on the end plate supporting plate and an outer peripheral surface of which abuts the inner surface near the groove of the boss, and the end plate support plate A beam stopper housed in a ring groove formed at a groove facing position on the outer peripheral upper surface of the outer peripheral surface, a shield gas ejection hole opening to the ring groove, and the end plate held by a leg standing outside the end plate. The end plate pressing plate for pressing the outer surface of the groove near the groove is provided with a boss pressing plate that is held at the upper end of the column and presses the outer surface of the boss near the groove. And the boss is fixedly supported , It is possible to suppress deformation at the time of both the welding, since further obtain thin end plate welding apparatus can be shared to a gas shielded arc welding and electron beam welding, the present invention is intended on extremely valuable industrial.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the thin end plate welding apparatus of the present invention. DESCRIPTION OF SYMBOLS 1 ... End plate, 2 ... Boss, 3 ... Bevel, 4 ... Positioner face plate, 5 ... Strut, 6 ... Nut, 7 ... Gas supply plate, 8 ... End plate support plate, 9 ... Bolt, 10 ... Shield gas reservoir, 11
... Gas supply port, 12 ... O-ring, 13 ... Ring groove, 14
... Beam stopper, 15 ... Shield gas ejection hole, 16
... boss support plate, 17 ... nut, 18 ... leg, 19 ... end plate holding plate, 20 ... nut, 21 ... boss holding plate, 22 ... nut.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Toshio Nishida 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (56) References: 63-47072, JP U)

Claims (1)

[Scope of utility model registration request] 1. A device for fixedly supporting a thin end plate in a downward posture and a boss in a posture in which a circumferential groove is aligned with an axial center portion thereof, the device being mounted on a column extending through the axial center of the end plate and the boss. An end plate supporting plate whose outer peripheral surface is in contact with the inner surface near the groove of the end plate, a boss supporting plate which is mounted on the end plate supporting plate and whose outer peripheral surface is in contact with the inner surface in the vicinity of the groove of the boss, and an outer periphery of the end plate supporting plate. A beam stopper housed in a ring groove engraved at the groove facing position on the upper surface, a shield gas ejection hole that opens to the ring groove, and an opening of the mirror plate that is held on a leg that is erected outside the mirror plate. A thin end plate welding apparatus comprising: an end plate pressing plate that presses the outer surface near the tip, and a boss pressing plate that is held by the upper end of the column and presses the outer surface near the groove of the boss.