JPS6157120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electron beam welding apparatus, and more particularly to an improvement of a welding chamber that accommodates a workpiece.

In recent years, electron beam welding machines have been used as mass-production machines for welding mass-produced parts. When using a conventional electron beam welding machine as a mass production machine,
Metal vapor and spatter generated during welding may adhere to the vicinity of the welding area, and the welding jig may not operate properly due to the spatter, resulting in the welding not being able to be performed normally, or the build-up on the vacuum sealing surface causing vacuum damage. Since these spatters and deposits may cause defects, a great deal of time must be spent cleaning them, which causes a decrease in the operating rate of the device.

It is an object of the present invention to provide electron beam welding that can easily replace a part of the welding chamber that is prone to failure due to spatter and build-up as described above, and that can reduce the cleaning effort and increase the operating rate. We are in the process of providing equipment.

Next, one embodiment of the present invention will be described using the drawings. In the figure, numeral 1 is an electron beam generating section, and the electron beam is generated in this section. 2 is an upper vacuum chamber connected to a vacuum evacuation pump (not shown). A vacuum valve 3 airtightly separates the upper vacuum chamber 2 and the welding chamber 4 in which the workpiece 11 is accommodated. The welding chamber 4 is divided into an upper welding chamber 5 and a lower welding chamber 6, and the upper welding chamber 5 can be installed and removed from the top of the drawing by means of a guide groove 7 provided on the lower side of the upper vacuum chamber 2. I'm starting to be able to do it.
Further, on the ceiling of the upper welding chamber 5, a jig 8 for preventing the workpiece from floating up and a spatter catcher 9 for suppressing the scattering of spatter as much as possible are attached. Furthermore, the upper welding chamber 5
A vacuum sealing material 10 is attached to the upper surface of. The upper welding chamber 5 is connected to a guide groove 7 from the top of the page of the figure.
When installed through the vacuum sealing material 10
Since it is separated from the bottom surface of the upper vacuum chamber 2, damage to the sealing material 10 is prevented. Inside the lower welding chamber 6, a jig stand 12 on which a workpiece 11 is attached is attached to the tip of the shaft of a rotary motor 13 that passes through the bottom of the lower welding chamber 6 in an airtight manner. A device 14 allows it to be raised and lowered.

When attaching the workpiece 11, the work can be done from a lowered position. After the workpiece 11 has been attached, the lower welding chamber 6 is raised by the lifting device 14, and eventually the upper welding chamber 5 is also pushed up, and the sealing material 10 is pressed against the bottom wall of the upper vacuum chamber 2. This operation causes the upper welding chamber 5 and the lower welding chamber 6 to
are integrated to form a vacuum chamber 4. After that, open the vacuum valve 3, evacuate the upper vacuum chamber 2 and the welding chamber 4, and when the predetermined vacuum pressure is reached, the workpiece 1
Welding is performed by irradiating an electron beam onto the welded part 1.

Most of the metal vapor and spatter generated during welding are accumulated in the upper welding chamber 5. For this reason, spatter accumulates in the upper welding chamber 5 in a relatively short period of time, but in that case, the upper welding chamber 5 is removed upwards in the drawing while the lower welding chamber 6 is lowered, and a replacement is installed. By installing the upper welding chamber, the original normal state can be easily restored. Since the upper welding chamber 5 does not need to be tightened with bolts to maintain airtightness, which is normally done, the time required for installation is short, and the downtime of the equipment is almost negligible, which significantly increases the operating rate of the equipment. be able to.

As described above, by using the replaceable upper welding chamber according to the present invention, it is possible to increase the operating rate of the equipment, and it is also easy to clean spatter accumulated in the upper welding chamber, so that it is possible to improve its practical use. The effects are significant.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. 1...Electron beam generation section, 2...Upper vacuum chamber,
3... Vacuum valve, 4... Welding chamber, 5... Upper welding chamber, 6... Lower welding chamber, 7... Guide groove, 9... Sputter catcher, 10... Sealing material, 11...
...Workpiece, 12...Jig stand, 13...Jig stand rotation motor, 14...Elevating device.

Claims (1)

[Claims] 1. An electron beam welding device having an electron beam generating section, an upper vacuum chamber attached to the lower side of the electron beam generating section, and a welding chamber disposed below the vacuum chamber for accommodating a workpiece. An electron beam welding device characterized in that the welding chamber is divided into an upper welding chamber and a lower welding chamber, and the upper end of the upper welding chamber is inserted and attached to a guide groove provided on the lower side of the vacuum chamber. .