JPH11347793A - Positioning device for object to be welded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the positioning device of object to be welded capable of surely supporting/positioning a sub material in the case the sub material is inclined from a vertical face for a base material in a prescribed angle. SOLUTION: The device is provided with a base 3 attachably/detachably fixed to a base material 1, a first support member 5 oscillatably to support one end of the base material 1 and to fix an end part of a welding position side of a sub-material 2, a block 11 supported to the base 3 movably in the plate thickness direction of the base material 1 and a second support member 21 which is movably supported in a direction parallel to a surface of the base 3, oscillatably supported to an axis parallel to a surface of the base 3 and supports the sub-material 2 with fixing a non welding position side of the sub- material 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for positioning a workpiece to butt and weld a base material and an auxiliary material.

[0002]

2. Description of the Related Art When a secondary material is vertically welded to a plane of a base material,
As a device for supporting and positioning the auxiliary material, for example, a welding residual deformation prevention device disclosed in Japanese Patent Application Laid-Open No. 52-24142 has been proposed. This device is configured such that a plurality of pairs of fixing devices fixed on a base material push and fix the auxiliary material from both sides thereof.

[0003] In such an apparatus, since the auxiliary material is fixed by push rods from both sides thereof, when the auxiliary material is vertically welded to the base material, the auxiliary material is positioned and securely fixed. can do.

[0004]

However, when the auxiliary material is to be welded at a predetermined angle from the vertical plane to the base material,
The contact between the auxiliary material and the push rod becomes unstable, the fixing force to the auxiliary material is insufficient, and positioning becomes difficult.

In view of the above circumstances, it is an object of the present invention to provide a positioning device for a workpiece which can reliably support and position a sub-material even when inclined at a predetermined angle from a vertical plane with respect to a base material. To provide.

[0006]

In order to achieve the above-mentioned object, in the invention according to claim 1 of the present application, there is provided an apparatus for positioning a workpiece to weld an auxiliary material to a base material at a predetermined angle. A base that is detachably fixed to the base material, a first support member that is swingably supported at one end of the base, and fixes an end of the sub-material on the welding position side; A block supported movably in the thickness direction of the base material,
The block is supported movably in a direction parallel to the surface of the base and swingably on an axis parallel to the surface of the base, and supports the non-welding position side of the sub material to support the sub material. And a second support member.

Further, in the invention according to claim 2,
A positioning device for an object to be welded for welding a sub-material to a base material at a predetermined angle, wherein the base is detachably fixed to the base material, and is swingably supported at one end of the base. A first support member for fixing an end of the base member on the welding position side, a block supported on the base so as to be movable in a thickness direction of the base material, and a block moving in a direction parallel to the surface of the base. And a second support member that is swingably supported on an axis parallel to the surface of the base and supports the sub-material by fixing the non-welding position side of the sub-material, and is swingable on the block. And angle detecting means for detecting the angle of the auxiliary material.

Further, in the invention according to claim 3, there is provided an apparatus for positioning an object to be welded for welding an auxiliary material to a base material at a predetermined angle, wherein the base is detachably fixed to the base material. A first support member swingably supported at one end of the base and fixing an end of the sub-material on the welding position side; a block fixed to the base via a support member; A second support that is supported movably in a direction parallel to the surface of the base and swingably on an axis parallel to the surface of the base, and supports the sub-material by fixing the non-welding position side of the sub-material. A member, a stage movably supported by guide means fixed to the base, and an angle detecting means slidably supported by the stage and detecting an angle of the auxiliary material are provided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show the first embodiment of the present invention.
1 is a plan view of a positioning device for a workpiece, FIG. 2 is a plan view showing a positioning state of the workpiece, and FIG. 3 is a cross-sectional view taken along line AA of FIG. FIG. 4 shows FIG.
FIG. 5 is a sectional view taken along line BB of FIG. 2, FIG.
5 is a flowchart showing a procedure for positioning the workpiece.

In FIG. 1, reference numeral 1 denotes a base material. Reference numeral 2 denotes an auxiliary material, which is welded in a state inclined at an angle θ with respect to the vertical plane of the base material 1.

A base 3 has a notch 3a at one end.
Are formed, and a plurality of electromagnets 4 are provided at the center.
Reference numeral 5 denotes a first support member which includes an electromagnet 6 and is swingably supported by a notch 3a of the base 3 via a shaft 7.
Reference numeral 8 denotes a guide bar fixed to the base 3. 9 is a motor fixed to the base 3. Reference numeral 10 denotes a feed screw, which is connected to the rotating shaft of the motor 9.

A block 11 has a plurality of bushes 12 slidably fitted to the guide bar 8 and the feed screw 10 and a nut 13 screwed to the feed screw 10 and is movably supported by the base 3. . A feed screw 14 is rotatably supported by the block 11 via a bearing 15. Reference numeral 16 denotes a motor, which is fixed to the block 11, and has a rotation shaft connected to the feed screw 14.

Reference numeral 17 denotes a spline shaft which is slidably supported via a spline bearing 18 fixed to the block 11. Reference numeral 19 denotes a shaft joint, which includes a nut 20 screwed to the feed screw 14 and joins the feed screw 14 to the spline shaft 17. Reference numeral 21 denotes a second support member which includes a plurality of electromagnets 22 and is swingably supported by the spline shaft 17.

A bracket 23 is fixed to the block 11. Reference numeral 24 denotes a shaft, and the block 11 and the bracket 2
3 rotatably supported. 25 is a swivel, axis 2
4 is fixed. Reference numeral 26 denotes a gear, which is fixed to the circumferential surface of the swivel 25. A motor 27 is fixed to the block 11. A gear 28 is fixed to the rotation shaft of the motor 27 so as to mesh with the gear 26. Reference numeral 29 denotes a detector, which includes a light emitter and a light receiver, and is fixed to the swivel 25.

The procedure for positioning the work to be welded in such a configuration will be described with reference to the flowchart shown in FIG. The mounting position of the positioning device according to the mounting angle of the sub-material 2 is displayed in advance on the base material 1 by a scribe line or the like. Positioning devices are arranged at predetermined intervals in accordance with the displayed mounting position (step S1), and the electromagnet 4 is energized to fix the base 3 to the base material 1 (step S2).

The motor 9 is operated to move the block 11 to a required position via the feed screw 10 and the nut 13, and the motor 16 is operated to operate the feed screw 14,
Spline shaft 1 via nut 20 and shaft joint 19
7, the support member 21 is moved to a position designated according to the mounting angle of the auxiliary material 2 (step S3). At this time, the position of the block 11 is controlled by a rotary encoder attached to the motor 9, and the position of the support member 12 is controlled by the output of a rotary encoder attached to the motor 16.

The auxiliary material 2 is arranged on the base material 1 so as to be in contact with the support members 5 and 21 (step S4).
The electromagnets 6 and 22 of the support members 5 and 21 are energized to hold the auxiliary material 2 (step S5). At this time, each of the support members 5 and 21 is pushed by the sub-member 2 and the shaft 7, the spline shaft 1
It swings around 7 and comes into contact with the surface of the secondary material 2.

A light beam is emitted from the light emitting device of the detector 29 toward the auxiliary material 2, and the light receiving device receives the reflected light from the auxiliary material 2 and converts it into an electric signal corresponding to the intensity (step S6). While operating the motor 27, the gear 2
8. The detector 29 is turned around the shaft 24 via the gear 26 and the turntable 25 (step S7).

The magnitude of the output signal from the detector 29 and the turning angle of the detector 29 detected by the output of the rotary encoder attached to the motor 27 are sequentially recorded and updated, and the maximum value of the output signal of the detector 29 is obtained. And the turning angle of the detector 29 at that time is stored (step S8). At this time, the position where the detection surface of the auxiliary material 2 and the optical axis of the detector 29 are vertical is the position where the output signal of the detector 29 is maximized. The turning angle of the detector 29 at this time corresponds to the inclination angle θ of the auxiliary material 2.

It is determined whether or not the stored turning angle of the detector 29 is within a preset range (tolerance specified at the time of design) (step S9). When the measurement results at both ends of the sub-material 2 are within the preset range, a welding operation is performed (step S10).

When one or both ends of the sub member 2 are out of the preset range, it is determined whether or not the angle of the sub member 2 can be adjusted (step S11). When the difference between the angles at both ends of the sub member 2 is within the design tolerance, the angle can be adjusted, and the adjustment direction and adjustment amount are calculated (step S12). The support member 21 is moved by the operation of the motor 16 based on the calculation result, and the angle is adjusted by rotating the auxiliary member 2 about the shaft 7 (Step S).
13). Hereinafter, the operation from step S6 is repeated.

On the other hand, if the angle difference between both ends of the sub-member 2 exceeds the designed tolerance due to bending, twisting, etc.,
Adjustment of the angle is disabled and an alarm is transmitted to stop the operation (step S14).

In the above-described embodiment, the positioning device can be provided separately and its installation position can be arbitrarily selected, and a plurality of types of workpieces having different lengths can be positioned.

FIGS. 7 and 8 show a second embodiment of the present invention. FIG. 7 is a plan view showing one end of a positioning device for a workpiece, and FIG. 8 is a side view of FIG. It is sectional drawing.

In the figure, the same components as those in FIGS. 1 to 5 are denoted by the same reference numerals. Numerals 30 denote supports, which are erected on both ends of the base 3 and support the blocks 31 respectively. 32 is a guide rail, which is fixed to the base 3 in parallel at a predetermined interval. 33 is a bearing and guide rail 3
2 movably supported. A rack 34 is fixed to the base 3 in parallel with the guide rail 32. 35
Denotes a stage, which is supported by bearings 33 and supports the bracket 23. A motor 36 is fixed to the stage 35. A pinion 37 is fixed to the rotating shaft of the motor 36 so as to mesh with the rack 34.

In this embodiment, the pinion 37 is rotated by the operation of the motor 36, and the stage 35 is moved along the guide rail 32. Therefore, if only one detector 29 is provided, it is possible to detect the angle of an arbitrary position of the auxiliary material 2.

As described above, the support members 21 are arranged at both ends of the base 3 having the same length as the base material 1 and the sub-material 2, and
Is provided on a movable stage 35 so that the inclination angle of an arbitrary position of the auxiliary material 2 can be detected, and the same operation and effect as those of the above-described embodiment can be obtained.

[0028]

As described above, according to the present invention, even when the sub-material of the workpiece is inclined with respect to the vertical plane with respect to the base material, the sub-material is reliably supported and positioned. Can be.

[Brief description of the drawings]

FIG. 1 is a plan view of a positioning device for a workpiece according to the present invention.

FIG. 2 is a plan view showing a positioning state of a workpiece.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a flowchart showing a procedure for positioning a workpiece.

FIG. 7 is a plan view showing one end of another positioning device for a workpiece according to the present invention.

FIG. 8 is a side sectional view of FIG. 7;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Sub-material, 3 ... Base, 4 ... Electromagnet, 5 ... Support member, 6 ... Electromagnet, 7 ... Shaft, 8 ... Guide bar, 9 ... Motor, 10 ... Feed screw, 11 ... Block, 12 ... bush, 13 ... nut, 14 ... feed screw, 15 ... bearing, 16 ... motor, 17 ... spline shaft, 18 ... spline bearing, 19 ... shaft joint, 20 ... nut, 21 ... support member, 22 ... electromagnet, 23 ... Bracket, 24 ... axis, 2
5 turning table, 26 gear, 27 motor, 28 gear
29: detector, 30: support, 31: block, 32: guide rail, 33: bearing, 34: rack, 35: stage 36: motor, 37: pinion.

Claims (3)

[Claims] An apparatus for positioning an object to be welded for welding a sub-material to a base material at a predetermined angle, comprising: a base detachably fixed to the base material; A first support member that supports and fixes an end of the auxiliary material on the welding position side, a block that is supported on the base so as to be movable in a thickness direction of the base material, and a surface of the base on the block. A second support member movably in a parallel direction and swingably supported on an axis parallel to the surface of the base, and supporting the sub-material by fixing the non-welding position side of the sub-material. A positioning device for a workpiece to be welded. 2. A device for positioning an object to be welded for welding a sub-material to a base material at a predetermined angle, comprising: a base detachably fixed to the base material; A first support member that is supported and fixes an end of the auxiliary material on the welding position side; a block that is supported on the base so as to be movable in a thickness direction of the base material; A second support member movably in a parallel direction, and swingably supported on an axis parallel to the surface of the base, and supporting the sub-material by fixing a non-welding position side of the sub-material; An apparatus for positioning an object to be welded, comprising: an angle detecting means which is swingably supported by a block and detects an angle of the auxiliary material. 3. A device for positioning an object to be welded for welding a sub-material to a base material at a predetermined angle, wherein the base is detachably fixed to the base material, and is pivotally mounted on one end of the base. A first support member that is supported and fixes an end of the auxiliary material on the welding position side, a block fixed to the base via a support member, and the block is movable in a direction parallel to a surface of the base. A second support member swingably supported on an axis parallel to the surface of the base and supporting the sub-material by fixing the non-welding position side of the sub-material; and a guide fixed to the base. And a stage movably supported by said means, and an angle detecting means slidably supported by said stage and detecting an angle of said auxiliary material.