JP2002248574A - Device for performing arc joint by non-consumable electrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for performing an arc joint by a non-consumable electrode, which makes abrasion wear of an end measured by detecting the end, on an arc-joint side, of the non-consumable electrode and makes the arc joint performed by correcting a position by the equivalent of the abrasion wear. SOLUTION: This device is provided with a torch vertical traveling part which holds a torch having the non-consumable electrode, a torch vertical traveling drive means for making the torch vertical traveling part travel vertically, a torch vertical traveling position detecting means for detecting a position of the torch, an electrode end detecting means for detecting the end of the electrode, and an abrasion-wear-of-electrode measuring means for measuring the abrasion wear of the end of the electrode. The torch vertical traveling drive means is driven to correct the position of the end, on the arc-joint side, of the non-consumable electrode by the equivalent of the abrasion wear, and a distance between an object to be joined and the end of the non-consumable electrode is held constant to perform the arc joint.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-consumable electrode arc joining apparatus for arc joining objects to be joined, such as fine parts, using non-consumable electrodes.

[0002]

2. Description of the Related Art Conventionally, when arc welding of fine parts, the joining condition changes when the tip of the non-consumable electrode on the arc joining side wears, which adversely affects the joining result of the workpiece. I knew it.

[0003] That is, the distance between the workpiece and the tip of the non-consumable electrode on the arc welding side has been an important management item when arc welding fine components.

For this reason, conventionally, the apparatus was stopped and the position of the tip of the non-consumable electrode on the arc joining side was periodically adjusted manually.

[0005] In addition, a dedicated jig is used as an adjustment amount of the tip position, or an intuition is used without using a dedicated jig.

[0006]

In the conventional method of manually adjusting the position of the tip of the non-consumable electrode on the arc joining side as in the prior art, the apparatus has to be stopped to perform the method, which is inefficient and requires many man-hours. I was

[0007] In addition, since the amount of adjustment of the tip position of the non-consumable electrode varies depending on the skill level of the worker and the type of worker, high accuracy cannot be obtained. There is a trouble that the tip position of the consumable electrode must be adjusted.

[0008] Further, there is a case where the user forgets to stop the apparatus by manual operation, and the position of the tip of the non-consumable electrode on the arc joining side is not adjusted periodically.

The present invention has been made to solve the above-mentioned conventional problems, and relates to a non-consumable electrode arc welding apparatus for surely and accurately adjusting the position of the tip of the non-consumable electrode on the arc welding side.

[0010]

In order to solve this problem, a first means of the present invention is to provide a torch having a non-consumable electrode for generating an arc between itself and an object to be joined, and holding the torch. A torch vertical traveling unit, a torch vertical traveling drive unit for traveling the torch in a vertical direction, a torch vertical traveling position detecting unit for detecting a position of the torch, and an electrode tip detecting unit for detecting a tip of the non-consumable electrode; Driving means for measuring the amount of wear of the tip of the non-consumable electrode, and driving means for driving the torch perpendicularly to make the distance between the position of the tip of the non-consumable electrode and the workpiece closer to the amount of wear. It is provided with control means for performing position correction.

[0011] A second means of the present invention is the first means, wherein a torch horizontal traveling unit equipped with a torch vertical traveling unit, a torch horizontal traveling driving unit for traveling the torch vertical traveling unit in a horizontal direction, And a torch horizontal traveling position detecting means for detecting the position of the torch horizontal traveling section.

[0012] The third means of the present invention is the above-mentioned first or second aspect.
In the means, each of the distance between the workpiece and the tip position of the non-consumable electrode and the distance between the workpiece and the electrode tip detecting means is input as a position correction value of the arc joining side tip of the non-consumable electrode. It has data input means.

According to a fourth aspect of the present invention, in any one of the first to third aspects, an electrode tip detecting means for detecting a tip of a non-consumable electrode by a non-contact sensor is provided.

According to a fifth aspect of the present invention, in any one of the first to third aspects, the tip of the non-consumable electrode is in contact with a contact sensor provided with an elastic body to form an electrically closed loop. It is provided with detection means.

According to a sixth aspect of the present invention, in any one of the above first to fifth aspects, when the apparatus is abnormal or the power is turned off.
At the time of a later return, it is provided with an operation determining means for correcting the position of the tip of the non-consumable electrode.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, a non-consumable electrode presence / absence detecting means for detecting the presence / absence of a non-consumable electrode held by a torch is provided. An operation determining means for correcting the position of the tip of the non-consumable electrode by the determination of the presence / absence detecting means is provided.

An eighth aspect of the present invention is a method according to any one of the first to seventh aspects, wherein the wear condition of the tip of the non-consumable electrode is determined from at least one of the type of the workpiece and the bonding condition. A control means for performing a position correcting operation of the tip position of the non-consumable electrode, and a data input means for enabling the number of operation cycles of the position correcting operation to be arbitrarily set are provided.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, the data input means for inputting the type of the workpiece and the non-consumable electrode for the non-consumable electrode according to the type of the workpiece are provided. A control means for automatically switching the tip position is provided.

According to a tenth aspect of the present invention, the first to ninth aspects are described.
In any one of the above means, an electrode wear amount display means for measuring the tip wear amount of the non-consumable electrode and displaying the electrode wear amount is provided.

The eleventh means of the present invention is characterized in that
0, data input means for inputting an upper limit value of the tip wear amount on the arc joint side of the non-consumable electrode, and an alarm output when the tip wear amount becomes equal to or more than the upper limit value to stop the apparatus. This is provided with means for comparing the amount of tip wear to be performed.

[0021]

According to the first means of the present invention, there is obtained an effect that the tip position of the non-consumable electrode on the arc joining side can be efficiently adjusted efficiently and the positioning can be performed with high accuracy. .

According to the second means of the present invention, an effect is obtained that the tip position of the non-consumable electrode on the arc welding side can be automatically adjusted even at a position separated from the article.

According to the third means of the present invention, even if there is a distance step between the workpiece and the electrode tip detecting means, an effect is obtained that this step can be corrected as a position correction value.

According to the fourth means of the present invention, since the tip of the non-consumable electrode on the arc joining side does not contact the sensor, an effect is obtained that the life of the sensor can be extended.

According to the fifth means of the present invention, the tip of the non-consumable electrode on the arc joining side can be directly detected, and even after the tip is detected, the force for pushing the contact sensor by the expansion and contraction of the elastic body can be buffered. Is obtained.

According to the sixth aspect of the present invention, when the apparatus is abnormal or when the power is turned off, the arc welding side tip position of the non-consumable electrode can be properly positioned, and an accurate operation can be performed when the operation is resumed. The effect that work can be performed is obtained.

According to the seventh aspect of the present invention, it is possible to recognize that the non-consumable electrode has been removed or replaced, and when the detection is changed from nothing to yes, the tip position of the non-consumable electrode on the arc joining side is changed. It is possible to obtain an effect that the work can be positioned at a regular position and an accurate work can be performed when the work is resumed.

According to the eighth aspect of the present invention, the position correcting operation of the tip position on the arc welding side of the non-consumable electrode can be automatically performed periodically in accordance with the type of the workpiece and the welding conditions. Is obtained.

According to the ninth means of the present invention, an effect is obtained that the tip position of the non-consumable electrode on the arc welding side can be automatically switched according to the type of the workpiece.

According to the tenth aspect of the present invention, an effect is obtained that the amount of wear of the tip of the non-consumable electrode on the arc joining side can be controlled according to the use conditions.

According to the eleventh means of the present invention, when the amount of wear reaches a certain value or more, the operation can be stopped to perform maintenance management for polishing or replacing non-consumable electrodes.

Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of a non-consumable electrode arc welding apparatus.
And a gas nozzle 2 for ejecting a shielding gas.
The torch 1 is gripped by the torch vertical traveling unit 4.

The torch vertical traveling section 4 is configured to travel in the vertical direction by the torch vertical traveling driving means 5, and the torch vertical traveling position detecting means 6 detects the vertical position of the torch 1. I have.

Examples of the torch vertical traveling drive means 5 include a servomotor, and examples of the torch vertical traveling position detecting means 6 include an encoder.

The position detection signal obtained from the torch vertical traveling position detection means 6 is input to the control means 8.

L1 is an electrode position setting reference value, which indicates the distance between the electrode tip detecting means 7 and the tip of the non-consumable electrode 3 on the arc joining side, and L2 is the distance between the electrode tip detecting means 7 and the joining surface of the article 13 to be joined. L3 indicates the distance between the tip of the non-consumable electrode 3 and the joining surface of the article 13 at the time of joining.

What is originally required at the time of arc joining is the distance between the tip of the non-consumable electrode 3 and the joining surface of the article 13 at the time of joining L3. The reason why L1 is used as the electrode position setting reference value is as follows. Since the distance from the tip of the non-consumable electrode 3 to the surface of the electrode tip detecting means 7 and the surface of the article 13 is different when the electrode tip detecting means 7 and the article 13 are provided, the L1 electrode The position setting reference value includes the distance between the electrode tip detecting means 7 of L2 and the joining surface of the article 13 to be joined.

The electrode position setting reference value of L1, the distance between the electrode tip detecting means 7 of L2 and the joining surface of the article 13 and L
Each set value of the distance between the tip of the non-consumable electrode 3 and the joint surface of the article 13 at the time of joining can be adjusted by inputting with the data input means 9 according to the type of the article 13. .

As an example of the data input means 9, there is a touch panel or the like.

Next, the operation of correcting the position of the non-consumable electrode 3 when the tip of the non-consumable electrode 3 on the arc welding side is worn will be described with reference to FIGS.

FIG. 2 is an operation diagram for correcting the position of the electrode wear amount. Step (a) shows a state in which the power is turned on after the control means 8 in FIG. 1 is turned off, and then the torch vertical traveling drive means 5 is returned to the home position. L4 in step (a) of FIG. 2 is the distance from the lower tip of the gas nozzle 2 to the tip of the non-consumable electrode 3 on the arc joining side, and L5 is the distance from the electrode tip detecting means 7 to the arc joining side of the non-consumable electrode 3. L6 is L4
And L5.

In step (b), the torch vertical traveling drive means 5 is driven, and the torch 1 descends at a low speed in the vertical direction.
The tip of the non-consumable electrode 3 on the arc joining side is detected by the electrode tip detecting means 7, and the lowering of the torch 1 is stopped.

At this stage, the position when the torch 1 stops descending is not stored in the torch vertical traveling position detecting means 6.

In the step (c), after the torch 1 stops lowering, the torch 1 is raised at a low speed after a predetermined time,
The ascent is stopped when reaching the ascent stop position of L7.

In step (d), when the torch 1 is further lowered at a low speed in the vertical direction and the tip of the non-consumable electrode 3 on the arc joining side is detected by the electrode tip detecting means 7, the lowering of the torch 1 is stopped. I do.

The position when the torch 1 stops descending is
The torch vertical traveling position detecting means 6 detects and stores the detected information.

In the step (e), after the lowering of the torch 1 is stopped, the torch 1 is raised at a low speed after a predetermined time,
The ascent is stopped when the electrode position setting reference value of L1 is reached. Steps (b) and (d) seem to perform the same operation, but have different purposes. In step (b), the purpose is to lower the torch 1 and stop it. 3) is different in that the aim is to detect and store the position at the time when the torch 1 stops descending by increasing the precision of the descent stop by the torch vertical traveling position detecting means 6.

When the number of times of the arc joining increases, the tip of the arc joining of the non-consumable electrode 3 wears, though not consumed, though it is minute. Therefore, in step (f), the distance L4 from the lower tip of the gas nozzle 2 before wear to the tip of the non-consumable electrode 3 on the arc joining side is determined by the gas nozzle 2 after wear.
From the distance L4 ′ from the lower tip of the non-consumable electrode 3 to the tip of the non-consumable electrode 3 on the arc joining side, the electrode wear amount measuring means 14
The wear amount of the non-consumable electrode 3 at L4−L4 ′ = L8 is measured.

Step (g) shows a state in which after the non-consumable electrode 3 is worn, the control means 8 is turned off, the power is turned on again, and then the torch vertical traveling drive means 5 is returned to the origin. Is the same value in step (a) and step (g), and is obtained by subtracting the distance from the lower end of the gas nozzle 2 after the wear of L6 to L4 'to the end of the non-consumable electrode 3 on the arc joining side. This is the distance L5 'from the worn-out electrode tip detecting means 7 to the tip of the non-consumable electrode 3 on the arc joining side.

As the operation after the non-consumable electrode 3 is worn, step (h) is the same operation as step (b) before wear, and step (i) is the same operation as step (c) before wear. , Step (j) performs the same operation as step (d) before wear.

In the step (k), the torch 1 is raised at a low speed after a certain period of time after the lowering of the torch 1 is stopped in the step (j), and the lifting is stopped when the torch 1 reaches the electrode position setting reference value L1. State. Steps (h) and (j) seem to perform the same operation, but have different purposes. In step (h), the purpose is to lower the torch 1 from a long distance L6 and stop it. In (j), the torch 1 is improved by increasing the descent stop accuracy.
In that the purpose is to detect and store the position at which the torch has stopped descending by the torch vertical traveling position detecting means 6.

In step (k), even if the non-consumable electrode 3 wears out as in the case of step (f), ie, L4-L4 '= L8 wear amount, the non-consumable electrode 3 is removed from the surface of the electrode tip detecting means 7 in the same manner as before the wear. The positioning is performed by correcting the electrode wear amount L8 so as to be the distance L1 to the tip of the consumable electrode 3 on the arc joining side.

The position correction operation after the wear from the new non-consumable electrode 3 is performed in steps (a) to (k). After the non-consumable electrode 3 is worn, the operations in steps (g) to (k) are performed. repeat.

As described above, even if the tip of the non-consumable electrode 3 on the arc joining side is worn, the electrode position setting reference value L1 can be kept constant from the surface of the electrode tip detecting means 7.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, the torch vertical traveling unit 4 in the overall configuration diagram of the non-consumable electrode arc welding apparatus of FIG.
The torch horizontal travel unit 10 equipped with the torch is driven horizontally by the torch horizontal travel drive means 11 (the dotted line in FIG. 1 is the position where the vehicle travels in the horizontal direction), and the torch horizontal travel unit 4 moves in the horizontal direction. The feature is that the position at the time is detected by the torch horizontal traveling position detecting means 12.

Examples of the torch horizontal traveling driving means 11 include a servomotor, and examples of the torch horizontal traveling position detecting means 12 include an encoder.

The position detection signal obtained from the torch horizontal traveling position detection means 12 is input to the control means 8 so that the tip position of the non-consumable electrode 3 on the arc welding side can be automatically adjusted even at a position separated from the article 13. Like that.

(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

In this embodiment, when the tip of the non-consumable electrode 3 on the arc welding side approaches the electrode tip detecting means 7 in the overall configuration diagram of the non-consumable electrode arc joining apparatus shown in FIG. The feature is that the non-contact sensor 7 detects that the tip is on the arc joining side.

Therefore, even if there is a distance step between the workpiece 13 and the electrode tip detecting means 7, this step can be corrected as a position correction value, and accurate control can be performed.

Examples of the non-contact sensor 7 include a photoelectric sensor,
There is a proximity sensor and the like.

(Embodiment 4) Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, the basic configuration is a non-consumable electrode arc bonding apparatus shown in FIG. 1 and is characterized by the configuration relating to the electrode tip detecting means.

FIG. 3 shows an example of the configuration of the electrode tip detecting means. In FIG. 3, when the tip of the non-consumable electrode 3 on the arc joining side contacts the electrode tip detecting means 7,
The contact sensor 15 built in is turned on.

When the contact sensor 15 is turned on, an electric closed loop with the control means 8 can be formed.

Therefore, since the tip of the non-consumable electrode on the arc joining side does not directly contact the sensor, the life of the sensor can be extended.

When the contact sensor 15 is turned on,
In order to prevent the tip of the non-consumable electrode 3 on the arc joining side from being damaged or deformed, the force for pushing the contact sensor 15 by the elastic body 16 disposed on the electrode tip detecting means 7 is buffered. The tip of the non-consumable electrode 3 on the arc joining side can be directly detected, and even after the tip is detected, the force for pushing the contact sensor 15 by the expansion and contraction of the elastic body 16 can be buffered.

In this embodiment, the elastic body 16 is provided on the upper surface of the contact sensor 15 (on the arc joining side of the non-consumable electrode 3), but may be provided on the lower surface depending on the member of the electrode tip detecting means 7. It is also possible to use the electrode tip detecting means 7 together by forming it from an elastic body.

Embodiment 5 Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, the operation of correcting the position of the tip of the non-consumable electrode 3 on the arc-joining side after the device is restored or when the power is turned off in the entire configuration diagram of the non-consumable electrode arc joining device shown in FIG. It is characterized in that the determination means 17 corrects the position of the tip of the non-consumable electrode 3 on the arc joining side if the apparatus is abnormal or the power is off.

Therefore, when the apparatus is abnormal or the power is turned off.
At the time of later return, the tip position of the non-consumable electrode 3 on the arc joining side can be properly positioned, and accurate work can be performed when the work is resumed.

(Embodiment 6) Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings.

The present embodiment is characterized in that the basic configuration employs the non-consumable electrode arc joining apparatus shown in FIG. 1 and the configuration relating to the non-consumable electrode presence / absence detecting means.

FIG. 4 is a structural example of the non-consumable electrode presence / absence detecting means. In FIG. 4, the non-consumable electrode presence / absence detecting means 20 detects that the non-consumable electrode 3 has been removed or replaced. ing.

When the detection by the non-consumable electrode presence / absence detecting means 20 changes from no to positive, the operation determining means 17 corrects the position of the tip of the non-consumable electrode 3 on the arc joining side.

Therefore, it is possible to recognize that the non-consumable electrode 3 has been removed or replaced, and when the detection is changed from “no” to “yes”, the tip of the non-consumable electrode on the arc joining side can be positioned at a regular position. An effect that an accurate work can be performed at the time of restarting is obtained.

(Embodiment 7) Hereinafter, a seventh embodiment of the present invention will be described with reference to the drawings.

In this embodiment, the basic configuration is a non-consumable electrode arc bonding apparatus shown in FIG. 1 and is characterized by a configuration relating to control means.

That is, when the tip of the non-consumable electrode 3 on the arc joining side is worn, the position correcting operation of the tip of the non-consumable electrode 3 on the arc joining side is periodically performed according to the type of the article 13 and the joining conditions. The control means 8 is configured to automatically perform the above-mentioned operations. By providing the data input means 9 so that the number of cycles can be arbitrarily set, the control means 8 periodically performs the control according to the type of the article 13 and the joining conditions. It is possible to automatically perform the position correction operation of the tip position of the non-consumable electrode 3 on the arc joining side, and it is possible to improve convenience.

In the present embodiment, for example, in the case of the type A of the article 13, the number of cycles is set to 20 times,
In the type B, the number of cycles is set to 100 or the like.

Embodiment 8 Hereinafter, an eighth embodiment of the present invention will be described with reference to the drawings.

In this embodiment, the basic configuration is a non-consumable electrode arc bonding apparatus shown in FIG. 1 and is characterized by a configuration relating to control means.

In this embodiment, the data input means 9 for inputting the type of the article 13 and the control means for automatically switching the tip position of the non-consumable electrode 3 on the arc welding side in accordance with the type of the article 13 8, the tip position of the non-consumable electrode 3 on the arc joining side can be automatically switched according to the type of the article 13 to be joined.

For example, for the type A of the article 13 to be welded, the electrode position setting reference value L1 (the distance between the electrode tip detecting means 7 and the tip of the non-consumable electrode 3 on the arc joining side) is 1.5 mm, The distance L2 between the joint 7 and the joining surface of the article 13 is 1.0 mm, and the tip of the non-consumable electrode 3 and the article 1
3 was set to 0.5 mm with respect to the joining surface,
In the case of Type B, the distance L1 is 1.7 mm and the distance L2 is 0.1 mm.
Adjustment is possible depending on the type of the object to be joined, such as 7 mm and the distance L3 to 1.0 mm.

Embodiment 9 Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings.

In this embodiment, the basic configuration is the non-consumable electrode arc bonding apparatus shown in FIG.

The feature of this embodiment is that the wear amount L8 of the tip of the non-consumable electrode 3 on the arc joining side is measured by the electrode wear amount measuring means 14 in step (f) shown in FIG. L8 is displayed on the electrode wear amount display means 18. An example of the electrode wear amount display means 18 is a touch panel or the like.

Therefore, it is possible to manage the amount of wear of the tip of the non-consumable electrode on the arc joining side according to the use conditions.

Embodiment 10 Hereinafter, a tenth embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings.

In the present embodiment, the basic configuration is the non-consumable electrode arc bonding apparatus shown in FIG.

This embodiment is characterized in that data input means 9 for inputting an upper limit value of the tip wear amount L8 of the non-consumable electrode 3 on the arc joining side, and an alarm output when the tip wear amount L8 exceeds the upper limit value. Tip wear amount comparing means 1 to stop the device
9 is provided.

Therefore, when the wear amount L8 reaches a certain value or more, the maintenance management for stopping the apparatus and polishing or replacing the non-consumable electrode 3 can be performed.

For example, for the type A of the article 13 to be welded, the upper limit of the wear amount L8 on the arc welding side of the non-consumable electrode 3 is set to 0.2.
mm is set by the data input means 9, and when the number of times of arc joining increases and the wear amount L8 on the arc joining side of the non-consumable electrode 3 becomes 0.2 mm or more, an alarm is output and the apparatus is stopped. The type B of the article 13 may be configured to be different from the above numerical value.

[0096]

As described above, according to the present invention, even if the tip of the non-consumable electrode on the arc joining side is worn, the position of the tip of the non-consumable electrode on the arc joining side is automatically determined without stopping the apparatus. The position can be corrected, and the tip position of the non-consumable electrode on the arc joining side can be kept constant.

Further, there is no unevenness in the adjustment amount of the tip position of the non-consumable electrode depending on the skill level of the worker or each worker.

In addition, it is no longer necessary to adjust the position of the tip of the non-consumable electrode every time the type of the workpiece changes, and the conventional manual operation forgot to stop the apparatus. According to the present invention, the position of the tip of the non-consumable electrode on the arc joining side can be automatically and periodically corrected.

From these facts, extremely efficient, high positioning accuracy can be obtained, and a high quality workpiece can be provided.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a non-consumable electrode arc bonding apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an electrode wear amount position correcting operation according to the embodiment of the present invention.

FIG. 3 is a configuration diagram of an electrode tip detection unit according to the embodiment of the present invention.

FIG. 4 is a configuration diagram of a non-consumable electrode presence / absence detection unit according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Torch 2 Gas nozzle 3 Non-consumable electrode 4 Torch vertical running part 5 Torch vertical driving means 6 Torch vertical running detecting means 7 Electrode tip detecting means 8 Control means 9 Data input means 10 Torch horizontal running part 11 Torch horizontal driving means 12 Torch horizontal running Detecting means 13 Workpiece 14 Electrode wear amount measuring means 15 Contact sensor 16 Elastic body 17 Operation determining means 18 Electrode wear amount displaying means 19 Tip wear amount comparing means 20 Non-consumable electrode presence / absence detecting means L1 Electrode serving as electrode position setting reference value Distance between the tip detecting means and the tip of the non-consumable electrode on the arc joining side L2 Distance between the electrode tip detecting means and the joining surface of the article to be joined L3 Distance between the tip of the non-consumable electrode and the joining face of the article to be joined at the time of joining L4 Distance from the lower tip of the gas nozzle to the tip of the non-consumable electrode on the arc joining side. L4 'Distance from the lower end of the gas nozzle after wear to the tip of the non-consumable electrode on the arc joint side L5' Distance from the lower end of the gas nozzle after the wear to the arc joint side of the non-consumable electrode L6 Sum of L4 and L5 L7 Lift stop position L8 Electrode wear

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshikazu Shimada 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 4E001 AA03 BB07 DA01

Claims (11)

[Claims] 1. A torch having a non-consumable electrode for generating an arc between a workpiece and a torch, a torch vertical traveling unit for gripping the torch, and a torch vertical traveling driving unit for vertically traveling the torch; A torch vertical traveling position detecting means for detecting a position of the torch, an electrode tip detecting means for detecting a tip of the non-consumable electrode, an electrode wear amount measuring means for measuring a tip wear amount of the non-consumable electrode; A non-consumable electrode arc welding apparatus comprising control means for driving a vertical traveling drive means to perform a position correction for bringing a distance between a tip end position of the non-consumable electrode and a workpiece to be close to the wear amount. 2. A torch horizontal traveling unit equipped with a torch vertical traveling unit, a torch horizontal traveling driving unit for traveling the torch vertical traveling unit in a horizontal direction, and a torch horizontal traveling position detecting unit for detecting a position of the torch horizontal traveling unit. 2. The non-consumable electrode arc welding apparatus according to claim 1, further comprising: 3. The distance between the workpiece and the tip position of the non-consumable electrode and the distance between the workpiece and the electrode tip detecting means are input as position correction values for the arc-joining tip of the non-consumable electrode. The non-consumable electrode arc welding apparatus according to claim 1, further comprising a data input unit that performs the operation. 4. The non-consumable electrode arc welding apparatus according to claim 1, further comprising an electrode tip detecting means for detecting a tip of the non-consumable electrode by a non-contact sensor. 5. The non-consumable electrode according to claim 1, further comprising an electrode tip detecting means for forming an electrically closed loop by contacting the tip of the non-consumable electrode with a contact sensor provided with an elastic body. Arc joining equipment. 6. The non-consumable electrode arc welding apparatus according to claim 1, further comprising an operation determining means for correcting the position of the tip of the non-consumable electrode when the apparatus is abnormal or when power is turned off. 7. An operation for providing non-consumable electrode presence / absence detection means for detecting the presence / absence of non-consumable electrodes held by a torch, and correcting the position of the tip of the non-consumable electrode based on the determination by the non-consumable electrode presence / absence detection means. 7. The method according to claim 1, further comprising a determination unit.
The non-consumable electrode arc bonding apparatus according to any one of the above. 8. A control means for judging a wear state of a tip of a non-consumable electrode from at least one of a kind of an object to be welded and a joining condition, and performing a position correcting operation of a tip position of the non-consumable electrode; The non-consumable electrode arc welding apparatus according to any one of claims 1 to 7, further comprising a data input unit configured to arbitrarily set the number of operation cycles of the operation. 9. A system according to claim 1, further comprising data input means for inputting the type of the workpiece, and control means for automatically switching the tip position of the non-consumable electrode according to the type of the workpiece.
The non-consumable electrode arc bonding apparatus according to any one of the above. 10. The non-consumable electrode arc welding apparatus according to claim 1, further comprising an electrode wear amount display means for measuring a tip wear amount of the non-consumable electrode and displaying the electrode wear amount. 11. A data input means for inputting an upper limit value of an amount of wear of a tip of a non-consumable electrode on an arc joining side, and a tip wear for stopping a device by outputting an alarm when the amount of wear of the tip becomes equal to or more than the upper limit value. 11. An apparatus according to claim 1, further comprising a quantity comparing means.
The non-consumable electrode arc bonding apparatus according to any one of the above.