JPH0698483B2 - Brazing and welding equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for brazing or welding a work piece placed in a vacuum or an inert gas atmosphere by using a radiation heating device.
In particular, the present invention relates to a brazing and welding apparatus suitable for a case where a workpiece has a complicated shape such as a denture and the position and orientation of the workpiece need to be freely changed during brazing or welding. is there.

[0002]

2. Description of the Related Art A radiating source for heating such as an infrared lamp is placed at the upper focal point of a spheroidal reflecting mirror having a lower opening of a spheroid, and is placed under the mirror.
Place the brazed or welded part of the work piece such as the denture at the position of the lower focal point in the translucent sample box filled with an inert gas such as gas, and focus on the lower focal point of the reflection mirror. It is known to perform brazing or welding by the high temperature obtained by the generated radiation, for example, Japanese Utility Model Application No. 62-14.
It is described in the specification of No. 8702 (Japanese Utility Model Publication No. 64-54973). Further, in the same specification, in order to perform the movement of the focal point or the movement of the position of the workpiece to be performed when brazing is performed on a plurality of different parts such as the case of brazing a denture, a sample box is described. It is also described that a means for vertically moving the mounting base to be mounted and finely moving the front and rear and left and right directions is provided.

[0003]

However, when it is necessary to sequentially braze the portions a, b, c and d of the workpiece M as shown in FIG. 13, the brazing start portion a is set to the reflection mirror. If the workpiece M is positioned on the table P so that the portion a faces the heating radiation source R side, the portion d becomes a so-called undercut portion with respect to the heating radiation source. , It is impossible to focus the radiation rays on the portion d by being obstructed by the portions b, c and the like only by moving or slightly moving the table P in the x, y, z directions of the orthogonal coordinate system.
In order to bring the part d to the lower focal point position and focus the radiation from above on the part d to perform brazing, it is necessary to perform position adjustment or attitude adjustment of tilting the workpiece. .

Brazing or welding of a workpiece having a complicated shape such as a denture, which is said to have no two identical shapes, is performed by using the above-mentioned heating radiation to produce a vacuum or an inert gas. When performed in an atmosphere, it is necessary to be able to freely control the position and orientation of the workpiece to bring the brazing or welding site to the focus of focusing, but heretofore, it has been shown in the above specification. There is a limited range of control of the position and orientation of the workpiece, such as only movement in the x, y, z directions of the orthogonal coordinate system as described above, or only horizontal movement and horizontal rotation. Therefore, in the case of the object to be processed as shown in FIG. 13, after the brazing proceeds in the order of a, b, and c, the sample box is once opened so that the part d can be irradiated from above. There was a trouble and a failure rate that M had to be replaced by hand and that the inside of the sample box had to be made into an inert gas atmosphere again and then brazed. Further, when the object to be processed is made of a highly active metal such as titanium, there is a risk that the physical properties may be impaired during the replacement.

When brazing or welding is performed using a laser light irradiation device as a heating radiation source, the focus can be adjusted and the focus position can be adjusted, unlike the case where an infrared lamp and a reflecting mirror are used. Although it is easier to move, even in the case of a laser beam, it is similarly difficult to focus the laser beam on the undercut portion d as described above due to the obstacle such as the site C, and the position of the workpiece. The necessity of being able to freely control the posture and the problems in the case where this is not possible are essentially the same as those described above.

However, generally speaking, x in a rectangular coordinate system,
By combining movement in the y and z directions and rotation around the x, y and z axes, the position and orientation of the support table on which the work piece is placed in a sealed space in a vacuum or inert gas atmosphere. It is possible to freely control, but for such control, each drive unit for movement in each axial direction, rotation about each axis, each operation unit, and the motion transmission system connecting each drive unit to each operation unit. In addition, the configuration of the entire device including and becomes complicated and large, and in principle, the operation is also a movement in the x, y, and z axial directions and x,
It requires a 6-way operation with rotation around the y and z axes, and the operation is complicated. Vacuum or inert gas is used for dentures and other small-sized and complicated shapes by using heating radiation. It is extremely unsuitable to use the above-mentioned six-element control and operation device for controlling the position and the posture of the support base of the workpiece in the device for brazing or welding in the atmosphere.

The present invention has been made in view of the above points, and an object of the present invention is to place it in a vacuum or an inert gas atmosphere in a closed chamber and braze it with a radiation heating device such as an infrared lamp and a reflecting mirror. Alternatively, the position and orientation of the support table on which the workpiece to be welded is placed can be freely controlled from the outside of the closed chamber and by operating a single operating body, especially with a simple structure and operation. It is an object of the present invention to provide a brazing and welding apparatus having an operating device that can be downsized.

[0008]

DISCLOSURE OF THE INVENTION A brazing and welding apparatus according to the present invention comprises a chamber capable of being sealed, which can be maintained in a vacuum or an inert gas atmosphere, and a support table housed in the chamber.
Each of the crank rod devices includes a single operating body provided outside the sealable chamber that is separated from the supporting base, and at least three crank rod devices that connect the supporting base and the operating body. A rod pierced through the partition wall of the sealable chamber in an airtight manner and supported so as to be rotatable about an axis and movable in the axial direction, and a crank installed on both ends of the rod so as to intersect with the rod. A radiation pin heating device for heating and brazing or welding a work piece placed on the support table, and a crank pin extending from the crank in a direction parallel or oblique to the axis of the rod; And a restraint device capable of restraining the movement of
One of the crank pins is coupled to a groove provided on the support base, and the other crank pin is coupled to a groove provided on the operating body so as to be slidable along the groove and swingable with respect to the groove. The groove of the support base and the groove of the operating body extend in the same direction.

[0009]

According to the present invention having the above-mentioned structure, the support for placing the workpiece to be brazed or welded by the radiation heating device is housed in a closed chamber kept in a vacuum or an inert gas atmosphere. The position and posture of the body can be freely controlled as described below by operating a single operating body provided outside the sealed chamber. The portion can be brought to a focal position where the heating radiation is focused and in a desired posture, and brazing and welding of a large number of parts of a workpiece having a complicated shape can be sequentially performed. During brazing or welding, by restraining the movement of the rod connecting the support base side and the operating body side by the restraint device, it is possible to maintain the support base and thus the workpiece in a desired position and posture.

Next, the operation of the crank rod device for connecting the support base and the operating body and moving the support base according to the operation of the operating body in the present invention will be described with reference to the drawings. FIG. 8 is a mechanism explanatory view of the crank rod device. In order to simplify the description, both the support base and the operating body are shown as disks in FIG. 8, and the three grooves 13 of the support base 11 and the three operating bodies 12 are shown. Each of the individual grooves 14 shows a case where extension lines of the grooves are formed radially so as to intersect with each other at the center O of the disk and form an angle of 120 degrees.

As described above, according to the present invention, the support base 11 and the operating body 12 are connected by at least three crank rod devices 16, and each crank rod device 16 is provided around its own axis. In other words, the rod 17 supported by the shaft support 28 and both ends of the rod 17 are allowed to rotate and move in the axial direction. Side crank 18
And 19 and a crank pin 2 extending from the crank in a direction parallel or oblique to the axis of the rod 17 (parallel in the figure).
0 and 21. And crank pin 20
Is in the groove 13 of the support base 11, and the crankpin 21 is the operating body 1.
Each of the two grooves 14 is coupled to the groove 14 so as to be slidable along the groove and swingable with respect to the groove. Moreover, the groove 13 of the support base 11 and the groove 14 of the operating body extend in the same direction.

Therefore, for example, when the operating body 12 is horizontally moved in a certain direction, the crank pin 21 connected to the groove 14 of the operating body of each crank rod device slides in the groove 14 and the crank 19 is moved. Will rotate the rod 17 about its axis. With the rotation of the rod 17, the crank 18 on the support base side rotates about the shaft center of the rod, and the crank pin 20 connected to the groove 13 of the support base 11 causes the support base 11 to move in the moving direction of the operating body 12. Move the same distance in the same direction. That is, the operating body 12
When is moved, the support base connected to the operating body 12 by the crank rod device moves in the same direction as the operating body by the same distance. Crank length (length from the connecting center of crank and rod to the connecting center of crank and crank pin)
Is not the same on the support base side and on the operating body side, and the length of the crank on the support base side is α times the length of the crank on the operating body side, the moving distance of the support base 11 is α of the moving distance of the operating body. It will be easily understood that the doubling is done.

The above operation is simulated in FIGS. Each reference numeral in the drawing indicates the same portion as the same reference numeral in FIG. 8 described above, and P and Q are the connecting center of the rod 17 and the crank 18, and the rod 17 and the crank 19.
It shows the bond center with. In the figure, the dotted line shows the state before operating the operating body 12, the solid line shows the state after operating the operating body in the arrow direction, and the centers of the support base 11 and the operating body 12 move from O1 to O2. It indicates that

FIG. 9 shows before and after horizontal movement.
Crank pins 20 and 21 of a single crank rod device
It can be seen that is sliding along the grooves 13 and 14 and the cranks 18 and 19 are rotating with the rod 17. FIG. 10 shows before and after the vertical translation, in which case the rod 17 only moves in its axial direction. FIG. 11 shows the center O of the operating body and the support base.
It shows the state before and after horizontally rotating around
Cranks 18 and 19 rotate with rod 17. FIG. 12 shows the state before and after the movement in which the horizontal rotation and the horizontal movement are combined is performed. There is no axial movement of the rod 17, and the crankpins 20 and 21 slide along the grooves 13 and 14, It is shown that the cranks 18 and 19 rotate with the rod 17. Although not shown in the figure, when the support base is tilted, sliding of the crank pin along the groove and rotation of the crank and the rod are accompanied by axial movement of the rod.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the brazing and welding apparatus of the present invention will be described below with reference to the drawings and the drawings. FIG. 1 is a partially longitudinal side view of an embodiment of the device of the present invention (however, only two crank rod devices are shown so as not to complicate the drawing), and FIG. 2 shows only a support and its operating device. FIG. 4 is a partially longitudinal side view showing an enlarged view of FIG. 3, and (a), (b) and (c) of FIG. 3 are sectional views taken along the line AA of FIG.
It is a BB line sectional view and a CC line sectional view. In the drawings, the same reference numerals indicate the same parts.

In FIG. 1, reference numeral 1 denotes a radiation heating device, which is provided at a spheroidal reflector 2 having a shape in which a lower part of a spheroid is cut out and opened, and an upper focus (first focus) position of the reflector. And an infrared lamp 3. Infrared rays from the infrared lamp 3 are reflected and focused on the lower focal point (second focal point) by the spheroidal reflecting mirror 2, and a high temperature at which brazing or welding of a workpiece can be performed at the lower focal point. The positional relationship is adjusted so that the lower focal point is formed in the closed chamber 31.

Reference numeral 4 denotes a support of the radiation heating device, which has a socket 5 for supporting the reflecting mirror 2 and to which an infrared lamp is coupled. Reference numeral 6 denotes a movable support arm, which is attached to a column 7 so as to be vertically movable, and has the support body 4 fixed to one end thereof. Reference numeral 8 is a wheel that slides the arm 6 up and down, and 9 is a constant-load spring device that suspends the movable support arm 6 from the upper portion of the column 7. Numeral 10 is a stopper device for locking the movable supporting arm 6 against the force of the constant force spring device at a proper position of the supporting column 7. For example, a chuck body 101 provided at a proper position of the supporting column 7 is provided on the bottom surface of the movable supporting arm 6. The projecting combined body 102 is fitted and locked. Reference numeral 41 is a light shielding plate which is connected to the support 4 by a hinge, for example.

The closed chamber 31 placed under the radiation heating apparatus 1 is installed on a base 27 above the stand 26. Reference numeral 32 denotes a partition wall of the closed chamber 31, and the infrared light reflected by the reflecting mirror 2 and condensed toward the lower focal point passes through the partition wall 32 and enters the closed chamber 31. Therefore, the partition wall 32 is formed of a material having a high light transmittance and a high heat resistance, such as heat resistant glass such as quartz glass or high silicate glass, or a polycarbonate resin. Reference numeral 33 denotes a side wall of the closed chamber, and at least the front side is formed of a transparent or translucent material so that the closed chamber can be seen through. Reference numeral 34 is a floor surface of the closed chamber, and 35 is a seal such as an O-ring for sealing the joint between the partition wall 32 and the side wall 33. The closed chamber 31 is provided with an intake port 36 and an exhaust port 37, an inert gas supply source such as an Ar gas cylinder is connected to the intake port 36 via a valve 38, and a valve 39 is connected to the exhaust port 37. The vacuum pump 40 is connected via the. Therefore, closed chamber 3
The inside of 1 can be maintained in a vacuum or an inert gas atmosphere.

In the closed chamber 31, a support base 11 on which a workpiece (not shown) to be brazed or welded is placed is accommodated. When the movable support arm 6 is pushed down and locked by the stopper device 10 to the column, that is, when the radiation heating device 1 is pushed down toward the closed chamber 31 and locked, the lower focal point of the reflection mirror 2 of the radiation heating device is changed. The positional relationship such as the height of the reflecting mirror, that is, the height of the locking position of the movable support arm 6, the height of the closed chamber, etc. is adjusted so as to be located above the support base 11. An operation body 12 is provided outside the closed chamber 31 so as to be separated from the support base 11. The disk-shaped support 11 and the operating body 12 are provided with grooves 13 and 14 extending in a radial direction from their centers. These grooves 13 and 14 are shown in FIG.
As shown in (c) and (c), they extend in the same direction. Further, an operation lever 15 is attached to the plate surface substantially vertically at the center of the lower surface of the operation body 12.

Reference numeral 16 is a crank rod device for connecting the support base 11 and the operating body 12, and connects the support base 11 and the operating body 12 in which at least three crank rod devices 16 are isolated from each other. Each crank rod device 16 includes a rod 17, cranks 18 and 19 and a crank pin 2.
0 and 21 and a rod 17 extending in a vertical direction connecting the support base 11 and the operating body 12 in a vertical direction so that the rod 17 can rotate around its axis and move in the axial direction.
And the floor surface 34 of the closed chamber 31 is airtightly penetrated. Reference numeral 29 is a sealing mechanism provided in the shaft support device 28. Cranks 18 and 19 extending at right angles to the rod 17 and extending in the same direction as shown in (b) and (c) of FIG. 3 are fixed to the upper and lower ends of the rod 17. Crank pins 20 and 21 extending vertically at right angles to the crank
Is fixed.

Sliders 22 and 23, which are slidable in the direction of extension of the grooves, are mounted in the grooves 13 of the support base 11 and the grooves 14 of the operating body 12, and the spherical bearings 24 and 25 of the sliders 22 and 23 have the above-mentioned features. The tip ends of the crank pins 20 and 21 are joined so that the joining angle is freely adjustable. Therefore, the crankpins 20 and 21 can slide in the extension direction of the grooves 13 and 14 via the sliders 22 and 23, and can swing with respect to the grooves 13 and 14,
Grooves 13 and 1 by coupling with sliders 22 and 23
That is why they are restrained within 4. As described above, the crank pins 20 and 21 are fixedly mounted on the cranks 18 and 19 so as to extend in the vertical direction, so in other words, the sliders 22 and 23 and therefore the grooves 13 and 14 are not fixed. Therefore, the disk-shaped support base 11 and the operating body 12 can be swung with respect to the crank pin, that is, can be tilted in any direction with respect to the crank pin.

As described above, the closed chamber 31 for accommodating the support 11 is installed on the base 27 above the stand 26, and the floor 27 of the base 27 and the closed chamber is closed by an O-ring or the like. A shaft support device 28 for airtightly supporting the rod 17 is fixed by a mechanism 29. Further, the shaft support device is provided with a restraint mechanism 30 for restraining and restraining the rotation and axial movement of the rod 17, so that the support base 11 can be maintained at a desired position and posture during brazing or welding. An explanatory view of a specific example of the restraint device is shown in (a) and (b) of FIG. 4A shows a state in which the restraint mechanism is not operating and restrains the rod 17, and FIG. 4B shows a state in which the restraint mechanism is working and restrains the rod 17. . In the figure, 301 and 302 are restraints, which are supported by a support shaft 303 so as to be slidable along the shaft. 304 is a compression spring. Restraint 3
One end of 01 is connected to the inverted lever 305 via the connector 306, and one end of the restraint member 302 is connected to the inverted lever 305 via the connector 307. Reference numeral 308 is a hinge that connects the restrictor and the connector, and 309 is a hinge that connects the connector and the inverted lever. An operation lever 310 is connected to the inverted lever 305 via a wire 311. Normally, the inverted lever 305 is upright, and the connectors 306 and 307 push the restraints 301 and 302 against each other against the force of the compression spring 304. When the operating lever 311 is tilted, the inverted lever 305 moves the compression spring 30.
As shown, the restraints 301 and 302 are pressed against the rod 17 by the force of the spring 304 to restrain the movement of the rod 17. It is desirable that the restraint mechanism be provided on all three shaft support devices so that they can be operated individually. If only one or two rods 17 are restrained, the movement of the support 11 and the operating body 12 is restricted. Limiting the movement of the support 11 and the operating body 12 may be desirable in order to prevent the movement beyond the limit and to reliably control the position and posture.

The operation of the above-described brazing and welding apparatus of the present invention will be described. The movable support arm 6 is pushed up by the constant force spring device 9 to the upper side of the column 7, and the radiation heating device 1 is pushed up. The partition 32 of the closed chamber 31 is removed and the closed chamber is opened. Then, a work piece to be brazed or welded, for example, a denture, is placed on the support base 11 in the closed chamber 31 and is appropriately fixed if necessary. Next, the partition wall 32 is airtightly attached to the side wall 33 to seal the sealed chamber 31, and then the valve 39 is opened to evacuate the sealed chamber by the vacuum pump 40. After the desired degree of vacuum is reached in the closed chamber, the valve 39 is closed and the valve 38 is opened to keep the closed chamber in an inert gas atmosphere. Alternatively, the evacuation by the vacuum pump may be continued to keep the closed chamber at a desired vacuum.
When the work piece is made of a highly active material, an inert gas may be blown into the closed chamber during a series of operations such as removal of the partition wall 32 and installation of the work piece on the support base. .

After the closed chamber has a desired degree of vacuum or an inert gas atmosphere, the movable support arm 6 is pushed down and locked by the stopper 10, and the radiation heating device 1 is pushed down toward the closed chamber 31. At this time, as described above, the lower focal point of the reflecting mirror 2 is located above the support 11 in the closed chamber. When the infrared lamp 3 is turned on, a high temperature that enables brazing or welding of the workpiece at the lower focus is obtained by the infrared rays reflected and condensed by the reflecting mirror 2. Therefore, the operation lever 15 is operated to freely move the operation body 12, and the movement of the operation body 12 is given to the support base 11 to be the same as or in proportion to the movement of the operation body 12, so that the brazed portion or the welded portion of the workpiece can be obtained. Is sequentially brought to the lower focus position, the brazing or welding is easily performed even when the shape of the work piece is complicated and the brazed part or the welded part is undercut. be able to.

Although the most typical embodiment of the present invention has been described above, the brazing and welding apparatus of the present invention has various other embodiments, and various modifications and expansions are possible. These will be described below. In the above embodiment, the spheroidal reflecting mirror 2 is used to collect the infrared rays from the infrared lamp 3 at the lower focal point. However, by combining the reflecting mirror having a reflecting surface having the shape of a paraboloid of revolution and a condenser lens. Other optical means such as focusing the infrared light from the infrared lamp at the focal point of the lens may be employed. As the infrared lamp, a known halogen lamp or xenon lamp can be used. A laser beam irradiation device may be used as the radiation heating device 1, and a brazed portion or a welded portion may be irradiated with laser light focused on a small spot to perform brazing or welding. In this case, laser light may be guided from a laser light source by a light guide such as an optical fiber, and the light guide may be fixed to the movable support arm 6.

A fan for cooling may be attached to the support 4 of the radiant ray heating apparatus, and instead of suspending the movable support arm 6 by the constant load spring 9 on the column 7, a pulley type suspension device is used. May be. It is also possible to adopt a system in which the movable support arm 6 is movable by a rack and a pinion. It is also convenient to attach a scale to the column 7 to indicate the stop or locking position of the movable support arm 6. A magnet may be used for the stopper 10.

A disk-shaped support base 1 shown in FIGS. 1 and 2.
In place of 1 and the operating body 12, one or both of them are bowl-shaped or cup-shaped, etc. Support base 11 and operating body 12
The shape of can be variously modified. Further, the grooves 13 and 14 of the support base 11 and the operating body 12 do not necessarily need to be extended from the center in the radial direction as shown in FIGS. 3A and 3C, and as shown in FIG. May extend at an angle to the radius line. However, in this case, the movement of the support base 11 and the operating body 12 is not free, and the movement is limited.

The cranks installed at both ends of the rod intersect the rod 17 at a right angle in the figure, but it does not matter if they are fixed so as to diagonally intersect the axis of the rod. In the above embodiment, as shown in (b) and (c) of FIG. 3, the crank 18 on the support side and the crank 19 on the operating body side extend in the same direction so as to overlap each other. The extension direction of each of the cranks 18 and the extension direction of each of the cranks 19 on the operating body side may be offset by a certain same angle. The crank pin does not necessarily have to extend in a direction parallel to the rod axis, and may extend in a direction oblique to the rod axis. Instead of connecting the tip of the crank pin to the spherical bearing of the slider mounted in the groove, for example, as shown in FIG.
6A is a plan view and FIG. 6B is a cross-sectional view (A in FIG. 6A).
As shown in the cross-sectional view taken along line A), the width of the groove 13 of the support base 11 is made smaller than the diameter of the crank pin 20, and the engaging pin 181 protruding from the tip of the crank pin is inserted and engaged in the groove 13. You may

The grooves 13 and 14 described above do not necessarily have to be provided in the support 11 and the operating body, and the support 1
Instead of providing the groove 13 in 1, the crank 18 fixed to the upper end of the rod 17 may be provided with a groove 43 extending in the longitudinal direction of the crank as shown in the cross-sectional explanatory view of the main part of FIG. 7.
In this case, one end of the crank pin 20 has, for example, a groove 43.
Slider 44 mounted in the groove 43 slidably along the
The crank pin 20 is slidable in the extension direction of the groove 43 by being fixed to the
The other end thereof is swingably connected to the support 11 by, for example, a spherical connection 201. Also on the operating body 12 side, in the same manner as described above, instead of providing the groove 14 on the operating body 12, a crank 19 on the operating body side may be provided with a groove extending in the longitudinal direction thereof and the crank pin 21 may be coupled in the same manner as described above. it can.
Further, on the side of the support base 11, a groove is provided in the crank 18,
The operating body 12 may be provided with a groove on the operating body 12 side, or conversely, the supporting base 11 may be provided with a groove on the supporting base 11 side, and the crank 19 may be provided on the operating body 12 side. Good.

The lever 15 for operating the operating body 12 is not always necessary, and the operating body 12 can be directly operated by hand. When the operating body 12 is directly operated by hand, it is possible to more strongly feel as if the support base 11 is being directly moved, as compared with the case where the lever 15 is operated. It can be said that it is better not to use the lever 15 if it is small. The lever 15 may be provided so as to project to the lower surface side of the operating body 12 so that it can be operated from the axial direction side of the rod 17, that is, the lower side as shown in FIGS. 1 and 2, but it is substantially perpendicular to the axial direction of the rod. The lever 15 may be provided so as to project from the side surface of the operating body 12 so that it can be operated in any direction, that is, from the side. Furthermore, the rod of the crank rod device that connects the support base and the operating body is configured by a concentric pipe, and the cranks on both end sides of the rod are led out to the outside of the pipe through slits provided in the pipe. You may do it. The restraint mechanism 30 may also be an electromagnetic type or a hydraulic / pneumatic type structure instead of the mechanical structure shown in the figure.

[0031]

In the brazing and welding apparatus of the present invention having the structure as described above, the brazing of the workpiece placed inside the chamber in a state where the closed chamber is maintained in vacuum or in an inert gas atmosphere. Alternatively, the welding can be performed with radiation such as infrared rays and laser light. Therefore, even when the object to be processed is made of a highly active metal such as titanium, brazing and welding can be performed without impairing its physical properties. Moreover, in the apparatus of the present invention, there is a single operating body which is housed in the above-mentioned chamber and controls the position and posture of the supporting base on which the workpiece is placed, and the supporting base is operated by operating this single operating body. The position and orientation of can be controlled easily, easily, and freely. In addition, it is easy to maintain the position and posture of the restraint device.

Therefore, even when there is an undercut portion at the brazing or welding portion of the work piece placed with the brazing or welding start portion facing the radiation source side, the undercut portion is located at the radiation source side. It is possible to easily and freely control the position and posture of the support base such as tilting the workpiece so as to face each other, and it is possible to perform brazing or welding without any trouble.

In the apparatus of the present invention, as described above, the support base can be caused to move in the same or proportional manner as the movement of the operating body. Therefore, when operating the operating body to move the support base, the operator must move. There is an advantage that it is possible to obtain the sensation of directly moving the support base. From this point as well, in the present invention, the operation of moving the support base can be performed easily and reliably. The device of the present invention has a simple structure and operation. Therefore, there is an advantage that the device can be simplified and downsized, and in addition to the above-mentioned easy control of the position and posture of the support base, the device of the present invention has a complicated shape such as a denture. It can be used particularly advantageously for brazing or welding a work piece, particularly a small size work piece.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view of an embodiment of the device of the present invention.

FIG. 2 is a partially longitudinal side view showing an enlarged view of the support base and its operating device in FIG.

3 (A), (B) and (C) are a sectional view taken along the line AA, a sectional view taken along the line BB and a sectional view taken along the line CC of FIG.

FIG. 4 is an explanatory view of an example of a restraint mechanism forming a part of the device of the present invention, in which (a) shows a non-restrained state and (b) shows a restrained state.

FIG. 5 is a plan view showing another example of grooves provided on the support base and the operating body.

FIG. 6A is a plan view showing another example of the coupling between the groove of the support base and the crankpin, and FIG. 6B is a sectional view taken along line AA of FIG.

FIG. 7 is an explanatory cross-sectional view of a main part showing another example of the device of the present invention.

FIG. 8 is an explanatory view of a mechanism of the operating device for the support base in the present invention.

FIG. 9 is a simulated view showing a state before and after the support base is horizontally moved.

FIG. 10 is a simulation diagram for vertical translation of a support base.

FIG. 11 is a schematic diagram of horizontal rotation of a support base.

FIG. 12 is a simulation diagram for a combined movement of the horizontal rotation and horizontal movement of the support base.

FIG. 13 is an explanatory diagram of brazing and welding of a workpiece having an undercut portion.

[Explanation of Codes] 1 Radiation heating device 2 Reflector 3 Infrared lamp 6 Movable support arm 11 Support base 12 Operating body 13 and 14 Groove 16 Crank rod device 17 Rod 18 and 19 Crank 20 and 21 Crank pin 22 and 23 Slider 28 Shaft support device 30 Restraint mechanism 31 Closed chamber

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B23K 31/02 310 B 8315-4E B25J 3/00 Z 9/10 Z 13/02 G02B 17/00 Z 9120- 2K

Claims (6)

[Claims] 1. A hermetically sealable chamber that can be maintained in a vacuum or an inert gas atmosphere, a support housed in the chamber, and a unit provided outside the hermetically sealable chamber separated from the support base. It is provided with one operating body and at least three crank rod devices that connect the support base and the operating body, and each crank rod device penetrates the partition wall of the sealable chamber airtightly and around the axis. A rod rotatably supported so as to be movable in the axial direction, cranks installed on both ends of the rod so as to intersect with the rod, and a crank pin extending from the crank in a direction parallel or oblique to the axis of the rod. And a radiation heating device for heating and brazing or welding a workpiece placed on the support table, and a restraint device capable of restraining the movement of the rod. One of the pins in the groove provided on the support,
The other crank pin, in the groove provided in the operating body, respectively,
A brazing and welding apparatus, which is slidable along the groove and swingably coupled to the groove, wherein the groove of the support base and the groove of the operating body extend in the same direction. 2. The brazing and welding apparatus according to claim 1, wherein one or both of the grooves provided in the support and the operating body are replaced with grooves provided in the longitudinal direction of the crank, and the crank is joined to the groove. A brazing and welding device characterized in that a pin is made swingable with respect to a groove instead of being swingable with respect to a support base or an operating body. 3. The radiant ray heating device comprises a radiant ray generating lamp and a reflecting mirror, is installed outside a chamber that can be sealed, and is processed through a translucent and heat-resistant partition wall of the chamber that can seal radiant rays. The brazing and welding apparatus according to claim 1 or 2, wherein the brazing and welding apparatus is configured to irradiate an object. 4. The brazing and welding device according to claim 1, 2 or 3, wherein the radiation heating device is supported on the column so that the vertical position can be adjusted. 5. The reflecting mirror has a spheroidal or paraboloidal reflecting surface, and the radiation generating lamp is placed at a first focus of the spheroid or a parabolic focus. The brazing and welding apparatus according to claim 1, 2, 3, or 4. 6. The brazing and welding apparatus according to claim 1, wherein the radiation heating device is a laser light irradiation device.