JP4880768B2 - Fusing bevel processing machine, - Google Patents

Description

The present invention relates to a cutting groove processing machine having a peripheral shape of a steel plate used for a machine frame or the like. Generally, the structure of a machine or the like is often due to welding of a steel plate, but in order to increase the welding strength, a part of the welded portion is chamfered by groove cutting and welded to that portion to increase the welding strength.

In the groove processing by fusing, it is desirable to always maintain the spraying direction of the cutting spraying means near 90 ° (orthogonal) with respect to the ridgeline of the workpiece cutting portion. Since it is difficult to continuously maintain the injection direction of the cutting injection means close to perpendicular to the workpiece ridge line for workpieces with complicated shapes that include right angles (corners), curves, straight lines, etc., conventional automatic fusing cutting The pre-machining machine cuts and cuts the straight part of the workpiece several times while changing the setup. Further, there is no commercially available automatic cutting groove processing machine for workpieces composed of free curves. There are other methods, such as a high-priced (about tens of millions of yen) fusing beveling machine or a milling machine (machine tool), but these are expensive and require data input. It is expensive, expensive, requires specialized skills and is not popular.

A patent (Patent Document 1) has been filed for an automatic fusing beveling machine for a free-curved workpiece, but it is not commercially available.

JP2001-30078

In a conventional fusing beveling machine, a model (template) that has the same shape as the workpiece is fixed, the outer periphery of the model is copied by a pair of stylus rollers (guide rollers) and a regulating roller, and the cutting torch is controlled by the movement of the model. Fusing groove processing. However, in this case, the center of gravity of the workpiece needs to be directly below the center of gravity of the template, and if the phase in the rotational direction of the template and that of the workpiece do not match, accurate cutting groove processing cannot be performed. Every time the workpiece is replaced, it is necessary to calculate the center of gravity of the workpiece consisting of a free curve, set it directly under the center of gravity of the model, and to adjust the phase of both rotation directions, which requires a lot of labor and time. There was a problem.

When there is a corner over to constituted a work in a free curve when passing through the injection direction is part of the corner of the blown groove means, it is necessary to rapidly direction rolling conversion from the direction of the previous pass. A conventional fusing groove processing machine does not have this mechanism, and therefore, it is currently impossible to cut flawlessly at a corner portion of a workpiece. The necessity of cutting the groove at the corner is large, and it is a problem that this processing cannot be performed.

Further, in the conventional cutting groove processing machine, it is necessary to rotate the drive servo wiring, the torch arm provided on the regulating roller, the fusing gas piping, etc. by 360 °, which are machine frames (for example, the first in Patent Document 1). 1 arm, 2nd arm)) and could not rotate up to 360 °.

Furthermore, in a conventional fusing beveling machine, a pair of stylus rollers are pressed against the model and imitated, the stylus rollers are made of magnets, and a servo motor is used to drive them. There was a complicated and expensive problem.

Further, the conventional fusing groove processing machine requires the production of a model, and there is a problem that one model is wasted at the end even if the fusing groove processing is completed.

In the present invention, except for the above-described defects, the model is unnecessary, the workpiece can be easily mounted, the fusing groove processing can be performed with high accuracy, and even workpieces with mixed corners, free curves, straight lines, etc. can be completed in one setup. The purpose is to provide an all-around automatic cutting groove processing machine that can perform circumferential fusing groove processing, has a simple structure, and is low in cost.

As shown in claim 1, the first solving means of the present invention is a gantry, a rotating means mounted on the gantry, a work driven by the rotating means, a transfer means provided on the gantry, Two guides that are rotatably held by the transfer means and are transferred and pressed in the direction of the workpiece driven by the rotation means, and the two guides are provided in the workpiece tangential direction, and the two guides a fulcrum moving become guide and one body, swings around the fulcrum of its, and contacts to follow is pressed against the outer circumference of the workpiece passes between the two guide, provided in contact with one body it is blown open initiative stage is Li Cheng thing.

The second solving means of the present invention is a steel sheet in which the shape of the workpiece is formed of a straight line, a circle, a free curve, etc. in the case of a fusing bevel processing machine by rotating the workpiece as shown in claim 2, and a part of the shape There is a corner composed of a straight line or a curved line. When the corner enters and exits between the two guides due to the rotation of the workpiece, the two guides receive a force from the corner, and the two guides are it is the ash comprises a driving mechanism for the rotation direction for rotating in the opposite direction of the workpiece.

The third solving means of the present invention is, as shown in claim 3 , in the case of a cutting edge processing machine by rotating a workpiece, the workpiece is placed on a receiving plate driven to rotate, and the workpiece is pressed through a thrust bearing, convey the rotation of the receiving plate to the work by a frictional force of the pressing occurring between the receiving plate and the workpiece is the ash includes a workpiece rotating mechanism for rotating the workpiece.

According to the first aspect of the present invention, since the contact and the two guides are in direct contact with the workpiece, the model is not required, and the center-of-gravity alignment and phase alignment in the rotational direction, which are conventionally required for the workpiece set, can be performed. It becomes unnecessary and work becomes efficient.

It enables the corner parts of the fusing beveling of the previously impossible in a workpiece as in the invention of claim 2, straight lines, free curve, the entire circumference of the blown beveling of composed work at the corner or the like Is possible with a single setup.

According to the invention of claim 3 , it is possible to attach and detach the workpiece by a simple handle operation.

  As described above, the cutting groove processing machine of the present invention can automatically perform groove cutting of a work consisting of straight lines, corners, curves, etc., in a single operation, all around, and is simple and low cost. And efficient automatic fusing beveling is now possible.

It is a top view of an automatic fusing bevel processing machine It is a side view of an automatic fusing bevel processing machine It is a side view of a work rotation means. Relationship diagram between shaft and guide held freely Shaft and contactor, guide, work relation diagram Diagram showing the positional relationship of guides, contacts, and fusing means for general workpieces The figure which shows the state where the corner of the work entered between two guides The figure which shows the state before the corner of a work enters between two guides Rotation diagram of contacts, guides and fusing means at the corner of the workpiece Diagram showing how to use the fusing start jig by removing a section of the workpiece. The figure which shows the usage method of the fusing end jig by taking the melt section of one part of the work Fusing means assembly diagram for workpiece rotation

In this embodiment , the work is driven to rotate, the two guides are pressed against it, and the two guides are in contact with the work, and the direction perpendicular to the work side tangent of the two guides is set in the fusing groove means. With the injection direction, the outer periphery of the workpiece is recognized with a contact, the cutting edge processing is performed by a combination of both the injection direction and the outer periphery recognition, and the workpiece corner is inserted into the gap between the two guides. contacts the fusing groove means is rotated at a high speed, the injection direction of the blown groove means becomes as possible chamfering perpendicularly to the workpiece outer circumference on both sides of corners of the previously impossible in a work (square) .

Illustrating a case where by rotating the workpiece performs GMA blown in the Examples. An actual processing apparatus will be described with reference to FIGS. 1 is a plan view of the apparatus, FIG. 2 is a side view of the apparatus, and FIG. 3 is a side view of the work rotating means. In these drawings, reference numeral 1 denotes a frame of the apparatus, on which a reduction motor 2, a vertical bracket 3, and a work holding bracket 14 are provided.

The reduction motor 2 frictionally drives the work 7 placed on the receiving plate 6 through the output shaft 5.

The vertical bracket 3 has a vertical shaft 9 that is rotatably supported by two bearings 28, a connecting plate 10 is provided on the vertical shaft 9, and a plate 12 is provided on the slide portion 11. The slide portion 11 is configured so that the plate 12 can be driven up and down by turning the handle 13, thereby adjusting the vertical positions of the two guides 8 and the contacts 18.

FIG. 4 shows a cross-sectional view of the shaft body 4. The shaft body 4 is rotatably held by two bearings 15 incorporated in a housing 14 provided on the plate 12. A bracket 16 is attached to the shaft body 4, and two guides 8 are provided on it as shown in FIG. Between the two guide 8 is a gap that impassable is contacts 18 provided in FIG. 6, so that the move by swinging about a fulcrum 30. In FIG. 1, the two guides 8 are urged in the direction of the work 7 by the air cylinder 35, and the shaft body 4 is rotatably held. Therefore, the two guides 8 are rotated to come into contact with the work 7. To come. FIG. 4 shows a side view in which the guide 8 contacts the workpiece 7.

In FIG. 5, a lever 19 is fixed below the shaft body 4, a fulcrum 30 is provided at an end thereof, an arm 20 provided rotatably is provided at the end, and a contact 18 is attached to the end. And swings between the two guides 8 to move. FIG. 6 shows a case where the workpiece 7 is rotating clockwise, and the fulcrum 30 is in a direction opposite to the rotation direction of the workpiece 7 when viewed from the workpiece 7 on the workpiece side tangent of the two guides 8. 6 shows the positional relationship between the workpiece 7, the guide 8, and the contact 18, and in FIG. 5, the lever 19 and the arm 20 are connected by a spring 21 and are urged in a direction in which the contact 18 contacts the workpiece 7. .

In FIG. 3, the work 7 is placed on the receiving plate 6 and is pressed by a thrust bearing 33 that is rotatably held from above. The thrust bearing 33 can be adjusted up and down by the handle 31. In the case of fusing, the thrust bearing 33 is adjusted downward to press the work 7 and in the case of replacing the work 7, it is adjusted upward. The vertical adjustment is performed by turning the handle 31 with the screw 32.

Fusing groove means 4 0 is mounted to the arm 20 which contacts 18 are mounted, as shown in FIG. 12, the jet direction, the vertical position has become adjustable, blown amount injected by adjusting screw 65 By changing the vertical position of the nozzle, the fusing direction is performed by changing the direction (angle) of the spray nozzle of the fusing groove means 40 with the clamp device 23.

Although the present invention has the above-described configuration, the important thing is that the injection direction of the fusing groove means is continuously orthogonal to the outer periphery of the fusing part of the work 7 having a complex continuous shape and is automatically orthogonal. It is to keep an angle close to.

The case of a general shape will be described with reference to FIG. In this figure, the center of rotation at which the contact 18 swings is a fulcrum 30, which is on the tangent of the two guides 8 on the workpiece 7 side, and the circumference drawn by the contact 18 is orthogonal to the tangent. The fusing groove means 40 attached integrally with the contact 18 also moves in the same manner as the contact 18. This is because the work side tangent lines of the two guides 8 and the line connecting the portions where the two guides 8 are in contact with the work are almost overlapped. Therefore, as shown in FIG. The cross section of the workpiece 7 is moved in a direction orthogonal to the ridgeline of the contacting portion, and the workpiece 7 formed by a corner, a straight line, a free curve or the like is taken in the direction orthogonal to the outer periphery of the workpiece 7.

A fusing groove chamfering of a special case having a corner close to 90 ° in the shape of the workpiece 7 will be described. As shown in FIG. 7, there is a gap between the two guides 8, and a corner (corner) close to 90 ° enters the guide, so that the corner portion of the work moves slightly (rotates) and contacts the contactor 18. The fusing groove means 40 rotates nearly 90 °. FIG. 9 shows a state in which the contact 18 is continuously rotated by nearly 90 °. By doing in this way, the contact 18 and the fusing groove means 40 are rapidly transferred from the straight part in front of the corner to the next straight part, and fusing groove chamfering is performed. FIG. 8 shows a state immediately before the corner enters the gap.

  As described above, the case where the fusing groove processing is performed while rotating the workpiece formed by straight lines, curves, corners, etc. has been described. In this case, the injection direction of the fusing groove means 40 is substantially orthogonal to the outer periphery of the workpiece 7. And the molten surface can be taken.

As described above, when the inventions according to claims 1 to 3 are carried out, the cutting groove chamfering of the entire periphery of the workpiece is automatically performed by one set-up, and the cutting groove processing is performed at a low cost. Efficient and economical.

The groove cutting according to the present invention by gas or the like can be widely applied to acetylene, propane, laser, plasma, etc., and the material to be cut can be cut from iron, stainless steel, aluminum, etc., and is considered to contribute widely to the industrial association.

DESCRIPTION OF SYMBOLS 1 Base 2 Deceleration motor 3 Vertical bracket 4 Shaft body 5 Output shaft 6 Receptacle 7 Workpiece 8 Guide 14 Work holding bracket 18 Contact 20 Swing bar 40 Fusing front means 42 Moving body

Claims (3)

A gantry, a rotating means mounted on the gantry, a work driven by the rotating means, a transfer means provided on the gantry, and rotatably held by the transferring means and driven by the rotating means transport in the direction of the workpiece, the two guides and which is pressed, is provided on the two guide the work side tangential to the center and the fulcrum moving become two guides and one body above, the fulcrum of its A fusing groove processing machine comprising a contact which swings and is impressed by the outer periphery of the workpiece passing between two guides, and fusing groove means provided in one body. The shape of the workpiece is a steel plate formed with straight lines, circles, free curves, etc. There is a corner composed of straight lines or curves in one part of the shape, and the above corner is inserted between two guides by the rotation of the workpiece 2. The fusing as claimed in claim 1, further comprising: a drive mechanism that receives the force from the corner by the two guides and rotationally drives the two guides in a direction opposite to the rotation direction of the workpiece. Groove processing machine. The workpiece is placed on a receiving plate for rotationally driving, the workpiece is pressed through a thrust bearing, and the rotation of the receiving plate is transmitted to the workpiece by a frictional force generated between the receiving plate and the workpiece. The fusing bevel processing machine according to claim 1 , further comprising a workpiece rotation mechanism that rotationally drives the workpiece.