JPH0642016U - Automatic milling machine for welding grooves on 3D curved welds - Google Patents

Abstract

(57) [Abstract] [Purpose] After welding the front surface, we perform automatic milling on the back surface and automatically form a welding groove on the back surface with the same depth as the front surface. To provide an automatic milling machine for use. [Structure] A control box (10), a carriage (11), a pipe rail (3) with a pipe rail or a rack, various cables, and an air hose (14),
The carriage (11) includes a milling motor (15), a cutter (16), an air cylinder (17), a solenoid valve (18), a measuring box (13), a remote control box,
On the milling shaft (20), a guide roller (19) equipped with a handle (H) for adjusting the distance between the installation surface of the pipe rail (3) and the machining groove and the deviation of the machining groove depth caused by the three-dimensional machining curvature error. A bearing (21) attached to the, a nylon guide roller (22) of idle type, and a stopper (23).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic MIG welding machine for three-dimensional curved surface welding, which is capable of performing automatic milling work before performing back surface welding, and which is capable of automatically grooving a three-dimensional curved surface welded portion.

[0002]

[Prior art]

 When performing automatic 3D curved surface welding of aluminum spherical tanks, etc., weld grooves are formed on the front and back surfaces of the base metal and both are welded. However, in order to build up a complete weld in the welded joint by fully penetrating it, after welding from the front side, it is possible to completely remove the incomplete welded portion of the first layer from the back side and to perform back side welding satisfactorily. Grooves need to be machined. In the conventional work of backside welding groove processing, when the workpiece is aluminum, a manual shaving cutter or a general-purpose automatic milling cutter was used.

[0003]

[Problems to be solved by the device]

 However, when performing backside welding groove processing using the above-mentioned manual shaving cutter or general-purpose automatic milling machine, the depth of the processed welding groove was not constant, and the processed surface was rough. For this reason, automation of the backside welding had many difficulties.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks of conventional welding groove processing, and after the front surface welding, perform an automatic milling operation on the back surface to form a welding groove on the back surface with a constant depth similar to the front surface. An object is to provide an automatic milling device for welding groove processing of a three-dimensional curved surface weld portion that is automatically formed.

[0005]

[Means for Solving the Problems]

 According to the present invention, an automatic milling device for processing a welding groove of a three-dimensional curved surface welded portion is provided with a rail and a ladder on two workpieces (1, 1 ') for automatic MIG welding. An automatic milling machine (M) for forming a machine, comprising: a control box (10), a carriage (11), a pipe rail (3) equipped with a pipe rail or a rack, various cables, and an air hose (14). The table (11) is between the milling motor (15), cutter (16), air cylinder (17), solenoid valve (18), measuring box (13), remote control box, pipe rail (3) installation surface and machining groove. The guide roller (19) with the handle (H) for adjusting the deviation of the machining groove depth caused by the distance of the machining and the three-dimensional machining curvature error, mounted on the milling shaft (20). Bearing (21), idle type Naironga Idorora (22) and, Ru der those comprising the stopper (23).

[0006]

[Action]

 According to the automatic welding groove milling device for a three-dimensional curved surface welded portion of the present invention, a pipe rail having the same curvature as that of the welding line is installed parallel to the welding line on the back side of the welding line of the workpiece, and the pipe rail reciprocates. Attach the carriage that runs. Since this carriage is equipped with a milling motor, cutter, air cylinder, solenoid valve, measuring box, and remote control box, the cutter is adjusted so as to cut a groove of a predetermined depth, and the milling motor is operated. By driving the carriage at a predetermined speed while operating, a welding groove having a predetermined depth on the back surface of the welding line and a smooth groove surface can be processed.

In addition, the automatic welding groove milling device for the three-dimensional curved surface welded portion of the present invention has an idler mounted coaxially with the cutter, in addition to a normal guide roller for adjusting the primary cutter height. Since it has a type nylon guide roller, the idle type nylon guide roller can correct the curvature of the welded portion and form a welding groove on a three-dimensional curved surface.

Further, by configuring the idle type nylon guide roller to be replaceable, it is possible to accurately process the welding grooves having different depths.

[0009]

【Example】

 An embodiment of an automatic milling device for welding grooves of a three-dimensional curved surface welded portion according to the present invention will be described below with reference to the accompanying drawings.

The construction of this embodiment is shown in FIGS. 1 to 3, and the steps of welding according to the present invention are shown in FIG.

FIG. 1 shows a state in which an automatic milling device for processing a welding groove of a three-dimensional curved surface welded portion according to the present invention is operably attached. First, the two work pieces 1 and 1'are attached to a welding jig, a pipe rail and a ladder are installed in parallel with the front welding line, and an automatic MIG welding machine is installed on the pipe rail. . In this state, surface welding is performed by an automatic MIG welding machine. Next, the pipe rail 3 and the ladder 4 are installed parallel to the backside welding line. The automatic milling device M of the present invention is installed on the pipe rail 3 as shown in the figure, and each work of the backside welding groove 5 is carried out.

In the processing operation, all incomplete welds inside the front welds are removed, and grooves are formed on the rear face so that welding can be further carried out in a satisfactory manner. During processing, the processing shape and processing length of the automatic milling machine M are adjusted so that the back surface can be welded with good quality.

Next, the automatic milling device M installed on the rear rail 3 is removed from the pipe rail 3. The automatic MIG welding machine that has performed the welding on the front side is moved and installed on the pipe rail 3 on the back side. After the relocation, welding is performed on the welding groove 5 on the back surface. FIG. 4 shows a cross section of the welding joint formed as described above at each processing step.

The structure of the automatic milling device M, which is the subject matter of the present invention, for performing such a procedure is as shown in FIGS. 1 to 3. The automatic milling device M of the present invention mainly comprises a control box 10, a carriage 11, a simple pipe rail or a pipeline 3 to which a rack is attached, various tables, and an air hose 14. As shown in FIGS. 2a and 2b, the carriage 11 is equipped with a milling motor 15, a cutter 16, an air cylinder 17, a solenoid valve 18, a measuring box 13 for adjusting various functions, and a remote control box (not shown). ing.

When processing the welding groove on the back surface, the automatic milling device M was installed on the pipe rail 3 installed parallel to the welding line, and this automatic milling device M was set along the pipe rail 3. Driven at speed, the welding groove machining work on the back side is performed by an automatic milling machine. A guide roller 19 having a handle H is installed in order to control the milling depth constant. Further, as shown in FIG. 3, a milling guide roller composed of a bearing 21, an idle nylon guide roller 22 and a stopper 23 is installed on the milling shaft 20.

In order to adjust the distance between the installation surface of the pipe rail 3 and the machining groove and the deviation of the machining groove depth caused by the error of the three-dimensional machining curved surface ratio, firstly, the air cylinder 1 7 is operated to adjust the height of the cutter 16, and then the handle H is rotated to adjust the guide roller 19 in the upward and downward directions. However, since the distance between the guide roller 19 provided with the handle H and the position where the cutter 16 is installed and the curvature of the three-dimensional processing cause a deviation in the groove depth, the guide roller 19 is not adjusted. There was a limit. On the other hand, by providing the idle type nylon guide roller 19 on the same shaft 20 as the cutter 16, the idle type nylon guide roller 19 advances along with the cutter 16 and minimizes an error due to machining curvature. You can Further, by replacing the interchangeable idle type nylon guide roller 19 depending on the depth of the working groove, it is possible to minimize the error in the welding groove working depth.

[0017]

[Effect of device]

 As is clear from the above description, the automatic milling device for welding grooves of the three-dimensional curved surface welded portion of the present invention mounts a pipe rail having the same curvature as the welding line of the work piece in parallel with the welding line, and Since the carriage equipped with an automatic milling device is installed, driving the carriage at a specified speed while operating the automatic milling device automatically creates a welding groove of a specified depth and quality along the welding line. It is formed. Furthermore, the automatic milling machine for welding groove processing of the three-dimensional curved surface welded portion of the present invention is equipped with an idle type nylon guide roller that minimizes the error of the welding groove depth due to the three-dimensional curved surface. It is possible to form a welding groove having a predetermined depth regardless of the curved surface.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a milling apparatus according to an embodiment of the present invention is operably attached.

FIG. 2 is a side view and a plan view of the automatic milling device of the present invention.

FIG. 3 is an enlarged sectional view showing a part of an automatic milling device according to the present invention.

FIG. 4 is a cross-sectional view showing each processing step of a welded joint formed using the automatic milling device of the present invention.

[Explanation of symbols]

 1 welded object 1'welded object 3 pipe rail 4 ladder 10 control box 11 carriage 13 measurement box 14 hose 15 milling motor 16 cutter 17 air cylinder 18 solenoid valve 19 guide roller 20 milling shaft 21 bearing 22 idle type nylon guide roller 23 Stopper H Handle M Automatic milling device

Claims (2)

[Scope of utility model registration request] 1. An automatic milling machine (M) for forming a welding groove on the back surface of a welded object (1, 1 ') after installing a pipe rail and a ladder on the two objects (1, 1') for automatic MIG welding. A box (10), a carriage (11), a pipe rail (3) equipped with a pipe rail or a rack, various cables, an air hose (14) are provided, and the carriage (1)
1) is equipped with a milling motor (15), a cutter (16), an air cylinder (17), a solenoid valve (18), a measuring box (13), and a remote control box,
It has a guide roller (19) with a handle (H) to control the milling depth,
0) a bearing (21), an idle type nylon guide roller (22), and a stopper (23) on the surface of the pipe rail (3), the distance between the installation surface of the pipe rail (3) and the machining groove, and the three-dimensional machining curvature. An automatic milling machine for welding groove processing of a three-dimensional curved surface welded portion, characterized in that the deviation of the processing groove depth caused by an error can be adjusted. 2. The idle type nylon guide roller (2)
2. The automatic milling device for processing a welding groove of a three-dimensional curved surface welded portion according to claim 1, characterized in that 2) is configured to be interchangeable and replaceable.