JP2568231Y2 - Electrode bar polishing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to tungsten, molybdenum, and the like used in TIG welding, plasma arc welding, and the like.
The present invention relates to an improvement in an electrode rod polishing machine for polishing the tip of a welding electrode rod made of chromium copper or the like into a predetermined shape.

[0002]

2. Description of the Related Art In general, the shape of the electrode rod tip in welding is closely related to the current density, pressure distribution, cooling effect, and the like of a welded portion, and has a great effect on work efficiency and quality of a welded product. Things. Therefore, the tip of the electrode rod has an appropriate shape according to the material, thickness and welding conditions of the plate material to be welded. For example, the tip has a sharp conical shape, or the tip has a tapered surface and a flat surface. It is necessary to finish it into a step-cut shape (a so-called frustoconical shape), and it is necessary to finish the outer surface of the tapered surface or the flat surface to a highly accurate smooth surface.

[0003] As a method of reworking the tip of the electrode rod, a method of intensively reworking using a dedicated polishing machine and a method of reworking with a file or the like for each welding are generally adopted. However, the former method has a problem that it is not only necessary to hold a large number of replacement electrode rods, but also that it is difficult to reduce the processing cost. In the latter method,
There is a problem that the working efficiency and the working accuracy are poor, and the consumption of the welding rod is large and the welding rod is consumed quickly.

On the other hand, as a solution to the above-mentioned problem, the present applicant has previously developed an electrode bar polishing machine as shown in FIGS. 1
01439). That is, the electrode rod polishing machine includes a case body 50, a motor 51 housed in the case body 50,
A polishing plate 52 fixed to a drive shaft of a motor 51, a swing plate 54 arranged on a top surface of a case body 50 so as to be swingable by a support pin 53, and an electrode rod holding guide 55 attached to the center of the swing plate 54. And a swing amount adjusting screw 56 for swinging the tip of the swing plate 54 in the direction of the arrow.

When the tip of the electrode rod A is polished, first, the electrode rod A is inserted into the insertion hole of the electrode rod holding guide 55 from above, and the tip of the electrode rod A is polished on the polishing surface of the polishing plate 52. Then, the motor 51 is started. When the polishing disk 52 rotates, the electrode rod A is pressed downward by its own weight and is pulled downward by the rotational frictional force of the polishing disk 52. Further, a rotational force is given to the electrode rod A by the frictional force of the polishing disc 52, and the electrode rod A rotates at a low speed. By operating the motor 51 for a certain period of time, the electrode rod A is sequentially polished by the polishing surface 52a while rotating, and the tip portion is formed in a substantially perfect conical shape. The swing amount adjusting screw 56 is rotated to operate the swing plate 54.
When the axis of the electrode rod A is moved outside the polishing plate 52, the conical point comes into contact with the step 52b of the polishing plate 52, and the point is ground. A flat surface is formed, and a so-called two-stage cut (frustoconical shape) tip shape having a tapered surface and a flat surface is obtained.

The above-mentioned electrode bar polishing machine has a simple structure, is easy to carry, and can efficiently form the tip of the electrode bar A into a predetermined shape, and has excellent practical utility. However, the conventional electrode bar polisher still has many problems to be solved as described below. When the electrode rod A to be polished is short, the holding of the electrode rod A by the electrode rod holding guide 55 becomes unstable, and the tip of the electrode rod A cannot be polished. When the tip of the electrode rod A to be polished is deformed by welding (for example, when it is swollen or curved), it is difficult to insert the electrode rod A into the electrode rod holding guide 55, and the polishing is performed. The electrode rod A itself may not rotate smoothly and reliably during processing, and the shape of the tip cannot be formed into a predetermined shape. Since only the electrode rod A is lowered during polishing, excessive shaving of the electrode rod A frequently occurs, and polishing loss of the electrode rod A is large. Since the angle of inclination of the polishing plate 52 with respect to the axis of the electrode rod A is always constant, the polishing angle cannot be changed even when welding conditions and the like need to change the angle of the tip of the electrode rod A. Since the tip of the electrode rod A comes into contact with substantially the same portion of the polishing surface 52a of the polishing plate 52, local wear occurs on the polishing surface 52a, and the entire polishing surface 52a cannot be effectively used.

[0007]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems in the conventional electrode bar polisher, and is intended to solve the problem of an extremely short or deformed electrode bar. Even though the tip can be reliably and easily polished to a predetermined shape, quantitative polishing without changing too much and a change in the polishing angle are possible, so that the entire polished surface of the polishing machine can be effectively used. An electrode bar polishing machine is provided.

[0008]

In order to achieve the above object, an electrode rod polishing machine according to the first aspect of the present invention is provided in a case main body, and is disposed inside the case main body, and can be raised and lowered on the case main body. A motor support frame that is supported at an adjustable angle, a motor that is fixedly supported by the motor support frame, and raises with the motor support frame, and is attached to the drive shaft of the motor. A disk-shaped polishing machine capable of taking a predetermined inclination angle at a position, and a holder support frame positioned above the polishing machine and movably arranged in a horizontal direction orthogonal to the axis of the motor in the case body, A cylindrical holder guide rotatably supported in a vertical orientation on the holder support frame, and is detachably inserted into the holder guide, and the tip end of the electrode rod contacts the polishing surface of the polishing machine. An electrode rod holder that is detachably held and fixed in a state, a rotation drive mechanism that is provided in the case body, and that rotates the holder guide together with the electrode rod holder, and a rotation support mechanism that is provided in the case body and holds the holder support frame. And a swing drive mechanism for reciprocating in a horizontal direction perpendicular to the axis of the motor.

According to a second aspect of the present invention, there is provided an electrode rod polishing machine, comprising: a case main body; a motor support frame disposed in the case main body and supported on the case main body so as to be capable of raising and lowering an angle. A motor that is fixedly supported by the motor support frame, and that elevates with the motor support frame, and is attached to the drive shaft of the motor so that the polishing surface can take a predetermined inclination angle at a fixed position with the elevating of the motor. A polishing plate, a swing plate disposed above the polishing plate and disposed on the case body, and supported by a swing amount adjusting screw so as to be movable by a fixed distance in a horizontal direction orthogonal to the axis of the motor, and a swing plate. A cylindrical holder guide, which is rotatably supported in a vertical position and has a lower end protruding into the case body, is removably inserted into the holder guide, and holds the electrode rod. It consists of an electrode rod holder that is detachably held and fixed in a state where the tip side is in contact with the polishing surface of the polishing machine, and a rotation drive mechanism that is provided in the case body and rotates the holder guide together with the electrode rod holder. Things.

[0010]

When the tip of the electrode rod is polished into, for example, a conical shape, first, a polishing angle is set. That is, the inclination angle of the motor support frame and the motor is adjusted so that the polishing surface of the polishing machine has a predetermined inclination angle. Next, the electrode rod is inserted into the electrode rod holder, the protrusion amount and the polishing amount of the electrode rod are adjusted to predetermined values by a setting gauge, and then the electrode rod is held and fixed by the electrode rod holder. Since the electrode rod is held and fixed by an electrode rod holder including a chuck guide, a collet chuck and a chuck screw, even a deformed or extremely short electrode rod can be reliably and easily held and fixed. When the electrode rod is held and fixed by the electrode rod holder, the motor is started to rotate the polishing machine at high speed, and the electrode rod holder is inserted into the holder guide that is rotationally driven by the rotation drive mechanism, and the tip of the electrode rod is inserted. Is brought into contact with the polishing surface of the polishing machine. Thus, the electrode rod
While rotating, it comes into contact with the polishing surface of the polishing machine and is polished in a good and reliable conical shape. Also, since the holder guide is automatically reciprocated in the left and right direction (horizontal direction perpendicular to the axis of the motor) by the swing drive mechanism simultaneously with the rotation (or left and right movement by manual operation), The contact position between the tip and the polishing surface will change. As a result, the entire polishing surface of the polishing machine can be effectively used. Then, as the polishing proceeds, the electrode rod holder descends in the holder guide by its own weight, and abuts on the upper surface of the holder guide to restrict the descending. Thereby, the polishing loss of the electrode rod is prevented, and in addition to the fact that the protrusion amount and the polishing amount of the electrode rod are set to predetermined values by the setting gauge, the electrode rod is quantitatively polished. When the welding conditions and the like are changed to change the polishing angle of the electrode rod, the tilt angle of the motor support frame and the motor is adjusted to make the polishing surface of the polishing machine a desired tilt angle.
Thereafter, the tip of the electrode rod is polished by the same operation as described above. Also, after polishing the tip of the electrode rod into a conical shape,
The tip of the electrode rod can be polished in two steps by changing the angle of inclination of the polishing machine and further polishing the tip of the electrode rod in a conical shape in this state. That is, two tapered surfaces having different angles can be formed at the tip.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 8 show an electrode bar polisher according to a first embodiment of the present invention. The electrode bar polisher includes a case body 1, a motor support frame 2, a motor 3, a polishing machine 4, a holder. It comprises a support frame 5, a holder guide 6, an electrode rod holder 7, a rotation drive mechanism 8, a swing drive mechanism 9, a setting gauge 10, and the like. In FIGS. 1 and 2, A is an electrode bar, 11 is a switch, 12 is a fuse, 13 is a rubber foot, 14 is a screw for fixing a safety cover, and 15 is a power cord.

The case body 1 is formed of a steel plate or a plastic material in a box shape having an open front surface, and has a front opening having a hole 16a into which a tip of an electrode rod holder 7 described later can be inserted. A transparent safety cover 16 made of stainless steel is detachably attached.
In addition, a partition wall 1a is provided in the case main body 1, and a dust case 17 whose upper part is open is disposed below the partition wall 1a so as to be able to be pulled out forward. In FIGS. 1 and 2, reference numeral 1 b denotes a guide hole of an arc-shaped motor support frame 2 formed in the left and right side walls of the case body 1, and 1 c denotes a guide hole formed in one side wall of the case body 1. An arc-shaped gauge guide hole, 1d is an angle adjustment scale displayed and formed along the gauge guide hole 1c,
Reference numeral 1e denotes an elongated hole for the holder guide 6 formed in the upper wall of the case body 1.

The motor support frame 2 is disposed in the case main body 1 and is supported on left and right side walls of the case main body 1 so as to be capable of raising and lowering the angle. That is, as shown in FIGS. 4 and 5, the motor support frame 2 has a distal end rotatably supported by support pins 18 on the inner side surfaces of the left and right side walls of the case main body 1 and a base end which is rotatable on the case main body 1.
And left and right support plates 2a that face each other and slide along the guide holes 1b, and connecting plates 2b that connect the left and right support plates 2a. An angle setting knob 19 is screwed into the base end of the left and right support plates 2a. The angle setting knob 19 is inserted into the guide hole 1b of the case body 1 so as to be movable along the guide hole 1b. It has become. Accordingly, the motor support frame 2 is changed to a predetermined inclination angle by loosening the angle setting knob 19 and moving it along the guide hole 1b, and by tightening the angle setting knob 19, Is fixed to the case body 1 at the inclination angle of. Further, an angle adjustment gauge 20 is attached to one support plate 2a of the motor support frame 2, and the angle adjustment gauge 20
Move along the gauge guide hole 1c. This angle adjustment gauge 20 is attached to an angle adjustment scale 1d.
, The angle of the motor support frame 2 can be accurately adjusted. In this embodiment,
The motor support frame 2 can be adjusted within a range of 5 degrees to 45 degrees.

The motor 3 is supported and fixed to the connecting plate 2b of the motor support frame 2 with its drive shaft 3a facing the center of rotation (support pins 18) of the motor support frame 2. It is designed to be able to take a predetermined inclination angle by lowering with the support frame 2. The operation time of the motor 3 is controlled by a timer (not shown), and is automatically stopped when the motor 3 is operated for a predetermined time. Further, a stepped polishing disk holder 21 is fixed to a drive shaft 3 a of the motor 3 by a set screw 22. In this embodiment, the motor 3 has AC100.
V, 50 / 60HZ, 100W motor 3 is used.

The polishing disk 4 has a disk shape, is fitted to a step portion of the polishing disk holder 21, and is detachably fixed to the polishing disk holder 21 by a polishing disk holder 23 and a fixing screw 24. The polishing machine 4 is a polishing machine holder 2.
1, the center line L in the horizontal direction coincides with the rotation center of the motor support frame 2 (the axis of the support pin 18), and the motor support frame 2 and the motor 3 are raised. Occasionally, it rotates about a horizontal center line L. Thereby, the polishing surface 4a of the polishing board 4 can be at a fixed position and at a predetermined inclination angle. Note that a polishing plate 4 made of so-called diamond abrasive grains is used as the polishing plate 4, and in this embodiment, a polishing plate 4 composed of a polishing member having a relatively fine abrasive particle size is used.

The holder supporting frame 5 is located above the polishing plate 4 and is movably disposed in the case body 1 in a horizontal direction (horizontal direction in FIG. 6) orthogonal to the axis L 'of the motor 3. ing. That is, the support frame 5 for the holder
As shown in FIGS. 4 to 6, a planar substantially U-shaped sliding substrate 5a slidably supported by upper and lower guide shafts 25 provided on upper portions of left and right side walls of the case main body 1, A pair of upper and lower horizontal support plates 5b movably penetrating through the partition wall 1a and fixed to the sliding substrate 5a in a horizontal posture, and the sliding substrate 5a is slid along the guide shaft 25 to thereby provide a motor. 3 is free to move in a horizontal direction orthogonal to the axis L ′.

As shown in FIG. 4, the holder guide 6 has a cylindrical shape, and is rotatably supported by a horizontal support plate 5b of a holder support frame 5 via a bush 29 in a vertical position. The holder guide 6 is attached to the horizontal support plate 5b such that the center line of the holder guide 6 is located on the center line L of the polishing machine 4 in the horizontal direction. Thereby, the axis of the electrode rod A held and fixed to the electrode rod holder 7 described later is also positioned on the horizontal center line L of the polishing machine 4.

The electrode rod holder 7 is removably inserted into the holder guide 6 and detachably holds and fixes the electrode rod A in a state where the tip end of the electrode rod A contacts the polishing surface 4a of the polishing plate 4. . That is, as shown in FIG. 7, the electrode rod holder 7 has a cylindrical chuck guide 26 which is removably inserted into the holder guide 6 and a collet which is inserted into the tip side of the chuck guide 26 and has an electrode rod insertion hole 27a. The chuck 27 includes a chuck 27 and a cylindrical chuck screw 28 that is inserted from the base end side of the chuck guide 26 and screwed to the collet chuck 27. The electrode rod A is inserted through the electrode rod insertion hole 27 a of the collet chuck 27. When the chuck screw 28 is tightened, the collet chuck 27 is reduced in diameter, and the electrode rod A
Are held and fixed in the electrode rod insertion holes 27a of the collet chuck 27. Incidentally, in FIG.
a is a tapered inner peripheral surface of the chuck guide 26; 27b is a split groove of the collet chuck 27; and 27c is a tapered outer peripheral surface of the collet chuck 27. In addition, several types of the collet chucks 27 having different inner diameters of the electrode rod insertion holes 27a are prepared.
It can correspond to an electrode rod A of 6.0 mm.

The rotation drive mechanism 8 drives the holder guide 6 to rotate together with the electrode rod holder 7, and as shown in FIGS. 4 and 5, a rotation motor 30 disposed in the case body 1; A driving rope wheel 31 fitted to the drive shaft of the rotation motor 30, a driven rope wheel 32 fitted to the holder guide 6, and an endless rope 33 wound around the rope wheels 31, 32. And is composed of
When the rotation motor 30 is started, both rope wheels 31, 32 are started.
The holder guide 6 rotates in a predetermined direction by the rope 33. It should be noted that the rope 33 is configured to be able to expand and contract by a small amount so that even if the position of the holder guide 6 slightly changes, the rotational force can be transmitted reliably and well.

The swing drive mechanism 9 reciprocates the holder support frame 5 in a horizontal direction perpendicular to the axis of the motor 3. That is, as shown in FIGS. 4 to 6, the swing drive mechanism 9 includes a substantially U-shaped substrate 34 slidably supported by the guide shaft 25, and a swing motor fixed to the substrate 34. 35, a disk 36 fixed to the drive shaft of the swing motor 35, and one end pivotally attached to the disk 36 and the other end pivotally attached to the sliding board 5a of the holder support frame 5. When the swing motor 35 is activated, the disc 36 rotates, and the link member 37 reciprocates in the horizontal direction orthogonal to the axis of the motor 3 to support the holder. The frame 5 also reciprocates in the same direction. As a result, the electrode rod holder 7 also reciprocates in the same direction. Further, the board 34 of the swing drive mechanism 9 can be moved and adjusted by a small amount along the guide shaft 25 by a left and right adjustment screw 38 which is rotatably and non-movably axially inserted into the side wall of the case body 1. ing. Accordingly, the left and right adjustment screws 38 are rotated to operate the substrate 3.
By changing the position of 4, the reciprocating position of the holder supporting frame 5 can be slightly changed. The swing drive mechanism 9 adjusts the stroke and swing position of the holder support frame 5 so that the electrode rod A can reciprocate between the solid line position and the chain line position in FIG. Then the electrode A is 10mm
It reciprocates with a stroke of.

The setting gauge 10 includes the electrode rod holder 7.
The amount of protrusion of the electrode rod A held in the
The polishing amount is set, and is detachably attached to the side wall of the case body 1. That is, the setting gauge 10
As shown in FIG. 8, a cylindrical gauge body 39 which is detachably screwed to the case body 1 and into which the electrode rod holder 7 holding and fixing the electrode rod A is inserted, and which is fixed to the tip of the gauge body 39 By inserting the electrode rod holder 7 into the gauge body 39 and bringing the tip of the electrode rod A into contact with the bolt 41. The amount of protrusion of the electrode rod A from the electrode rod holder 7 can be adjusted.
When the polishing amount is set by the setting gauge 10, first, the electrode rod A is held and fixed by the electrode rod holder 7 in a state where the tip end protrudes by a predetermined length. Next, the electrode rod holder 7 is inserted into the holder guide 6 and trial polishing is performed by the polishing machine 4, and it is confirmed whether the tip of the electrode rod A is polished to a perfect conical shape. When the electrode rod A is completely polished, the electrode rod holder 7 holding and fixing the electrode rod A is inserted into the gauge body 39 removed from the case body 1, and the tip of the electrode rod A and the tip of the setting bolt 41 are inserted. The setting bolt 41 is moved and adjusted so that the gap becomes a predetermined value (for example, 0.5 mm). The polishing amount of the electrode rod A is determined by the gap.

Next, the electrode rod A was polished using the electrode rod polishing machine.
Will be described. When finishing the tip of the electrode rod A in a conical shape, first, the polishing angle is set so that the tip of the electrode rod A is at a desired angle. That is, the angle setting knob 19 is loosened and moved along the guide hole 1b, and the angle setting knob 19 is tightened at a position where the angle adjustment gauge 20 indicates a predetermined value of the angle adjustment scale 1d. Thereby, the inclination angles of the motor support frame 2 and the motor 3 are changed, and the polishing surface 4a of the polishing table 4 is also changed to the predetermined inclination angle. Next, the electrode rod A is inserted into the electrode rod insertion hole 27a of the collet chuck 27 of the electrode rod holder 7.
After the electrode rod A is projected from the tip of the collet chuck 27 by a predetermined length (45 mm to 50 mm), the chuck screw 28 is lightly tightened to hold the electrode rod A in a slidable state. An extremely short electrode rod A, an electrode rod A having a weld metal adhered to the tip or a bent electrode rod A is inserted from the tip of the collet chuck 27, and the long electrode rod A is inserted into the base of the collet chuck 27. Insert from the end. Then, the electrode rod holder 7 holding the electrode rod A is inserted into the gauge body 39 of the setting gauge 10, the tip of the electrode rod A is brought into contact with the setting bolt 41 and pushed into the collet chuck 27, and the electrode rod holder 7 is pressed. Is completely fitted into the gauge body 39, the chuck screw 28 is completely tightened to hold and fix the electrode rod A. Thus, the protrusion amount and the polishing amount of the electrode rod A are set. Thereafter, the switch 11 is turned on, and the polishing plate 4 is rotated at a high speed in the direction of the arrow in FIG. It is brought into contact with the polishing surface 4a of the board 4. This allows
The electrode rod A is reciprocated in the left-right direction at the same time as the rotation, and its tip comes in contact with the polishing surface 4a of the polishing plate 4 and is sequentially polished. At this time, since the polishing plate 4 is rotating in the direction of the arrow, the electrode rod A is polished in a liftable manner. As a result, the electrode rod A is polished satisfactorily and smoothly without applying an excessive load to the electrode rod A. Further, as the polishing progresses, the electrode rod holder 7 descends in the holder guide 6 by its own weight, and the tip portion is automatically polished into a conical shape. In addition, the electrode rod holder 7
After a certain amount of lowering, the knob of the chuck guide 26 comes into contact with the upper surface of the holder guide 6, and the lowering is restricted. Then, when the polishing is performed for a predetermined time, the motor 3 is automatically stopped by the timer, and the polishing is completed. When the polishing is completed, the electrode rod holder 7 is pulled out from the holder guide 6 and the electrode rod A is removed from the electrode rod holder 7.

On the other hand, when it is necessary to grind the tip of the electrode rod A in two steps as shown in FIG. 9 (that is, to form two tapered surfaces with different polishing angles at the tip), first, The angle of the polishing table 4 is adjusted so that a taper surface having an angle θ ₁ is formed at the tip of the rod A, and in this state, the tip of the electrode rod A is polished by the same operation as described above. Next, the electrode rod A
The angle of the polishing platen 4 is adjusted so that a tapered surface having an angle θ ₂ is formed at the tip of the electrode rod A, and the tip of the electrode rod A is polished in this state. As a result, the tip of the electrode rod A is polished in two steps as shown in FIG. In this case, two-stage polishing can be efficiently performed by adjusting the two setting gauges 10.

When it is necessary to finish the tip of the electrode rod A into a two-stage cut shape (frustoconical shape) composed of a tapered surface and a flat surface, first, the electrode rod holder 7 uses the electrode rod holder 7. A is held and fixed, and the tip of the electrode rod holder 7 is inserted into the hole 16 a of the safety cover 16, and the tip of the electrode rod A is brought into contact with the polishing surface 4 a of the polishing plate 4 to polish the tip flat. Next, the electrode rod holder 7 may be inserted into the holder guide 6 and the tip of the electrode rod A may be polished in a conical shape by the polishing machine 4.

FIGS. 10 to 12 show an electrode bar polisher according to a second embodiment of the present invention. The electrode bar polisher is configured to reciprocate the electrode bar holder 7 in the left-right direction by manual operation. It comprises a case body 1, a motor support frame 2, a motor 3, a polishing plate 4, a swing plate 42, a holder guide 6, an electrode rod holder 7, a rotation drive mechanism 8, a setting gauge 10, and the like.
The components other than the swing plate 42 have substantially the same structure as that of the first embodiment, and the same reference numerals are used for the same portions as those of the first embodiment. .

The swing plate 42 is located above the polishing plate 4 and is disposed on the case main body 1. The swing plate 42 has a predetermined distance (10 mm) in a horizontal direction (horizontal direction in FIG. 10) perpendicular to the axis of the motor 3. ) Is supported so that it can reciprocate freely. A swing amount adjusting screw 43 composed of an eccentric shaft (not shown) and a knob 43a is provided at a base end of the swing plate 42, and by rotating the swing amount adjusting screw 43 once, the swing plate 42 is rotated. The motor 3 reciprocates by a fixed distance (10 mm) in a horizontal direction orthogonal to the axis of the motor 3. Further, a cylindrical holder guide 6 is rotatably supported at the tip of the swing plate 42 with its lower end protruding into the case body 1, and the electrode rod holder 7 is inserted into the holder guide 6. It is detachably inserted. The swing plate 42
The holder guide 6 is mounted at such a position that the center line of the holder guide 6 is located on the center line L of the polishing machine 4 in the horizontal direction. Thus, the axis of the electrode rod A held and fixed to the electrode rod holder 7 described later is
Is located on the horizontal center line L.

In this electrode bar polishing machine, the tip of the electrode bar A is polished into a conical shape or a frusto-conical shape by performing the same operation as that of the first embodiment. Can be polished in two steps. Then, when the polishing surface 4a of the polishing machine 4 is partially worn, the swing plate 42 is moved in the horizontal direction perpendicular to the axis of the motor 3 by manually operating the swing amount adjusting screw 43,
The contact position between the tip of the electrode rod A and the polishing surface 4a of the polishing plate 4 is changed. As a result, the entire area of the polishing surface 4a of the polishing machine 4 can be effectively used.

[0028]

As described above, according to the present invention, the electrode rod is held and fixed by the electrode rod holder including the chuck guide, the collet chuck and the chuck screw, and the electrode rod holder is attached to and detached from the holder guide provided on the case body side. The electrode rod is freely inserted and the tip of the electrode rod is brought into contact with a polishing machine rotating at a high speed in an inclined posture, and the holder guide is driven to rotate together with the electrode rod holder. As a result, even a deformed electrode rod or a very short electrode rod can be reliably held and fixed by the electrode rod holder, and can be brought into contact with the polishing machine while reliably rotating the electrode rod, The tip of the electrode rod can be polished into a predetermined shape.
Further, since the electrode rod holder comes into contact with the holder guide and the descent is regulated, there is no excessive shaving of the electrode rod, and the polishing loss of the electrode rod is small. Furthermore, since the motor support frame is attached to the case body so as to be able to freely raise and lower the angle, and the motor having the polishing plate is attached to the motor support frame, by changing the inclination angle of the motor support frame, The inclination angle of the polishing surface of the polishing machine can be adjusted to a predetermined angle. As a result, the tip of the electrode rod can be polished at an arbitrary angle, and the tip of the electrode rod can be polished in two steps. In addition, since the holder guide is automatically reciprocated in the left and right directions by the swing drive mechanism or moved left and right by manual operation, the contact position between the tip of the electrode rod and the polishing surface of the polishing machine changes, and polishing is performed. The entire area of the surface can be effectively used, and the life of the polishing machine is greatly improved. In addition, since the case body is provided with a setting gauge capable of adjusting the amount of protrusion of the electrode rod held and fixed to the electrode rod holder and setting the amount of polishing of the electrode rod, the electrode rod can be accurately polished quantitatively. .
Further, since the dust case is provided in the case body so as to be drawn out, dust generated by polishing can be easily and easily removed.

[Brief description of the drawings]

FIG. 1 is a side view of an electrode bar polishing machine according to a first embodiment of the present invention.

FIG. 2 is a front view of the electrode bar polishing machine.

FIG. 3 is a plan view of the electrode bar polishing machine.

FIG. 4 is a partially broken enlarged side view of the electrode bar polishing machine.

FIG. 5 is an enlarged cross-sectional view of the electrode bar polishing machine.

FIG. 6 is an enlarged vertical sectional view of a main part of the electrode bar polishing machine.

FIG. 7 is an enlarged vertical sectional view of an electrode rod holder.

FIG. 8 is a front view of a setting gauge.

FIG. 9 is a partially enlarged front view of an electrode rod whose tip is machined in two steps.

FIG. 10 is a front view of an electrode bar polishing machine according to a second embodiment of the present invention.

FIG. 11 is a side view of the electrode bar polishing machine.

FIG. 12 is a partially broken enlarged side view of the electrode bar polishing machine.

FIG. 13 is a longitudinal sectional view of a main part of a conventional electrode bar polishing machine.

FIG. 14 is a plan view of a main part of the electrode bar polishing machine.

[Explanation of symbols]

A is an electrode rod, 1 is a case main body, 2 is a motor support frame, 3 is a motor, 3a is a drive shaft of the motor, 4 is a polishing machine,
4a is a polishing surface, 5 is a holder support frame, 6 is a holder guide, 7 is an electrode rod holder, 8 is a rotation drive mechanism, 9 is a swing drive mechanism, 10 is a setting gauge, 17
Is a dust case, 26 is a chuck guide, 27 is a collet chuck, 27a is an electrode rod insertion hole, 28 is a chuck screw, and 42 is a swing plate.

Claims (5)

(57) [Scope of request for utility model registration] A case body (1) and a case body (1)
And a motor support frame (2) supported by the case body (1) to be able to be raised and adjusted in angle, and a motor support frame (2) fixedly supported by the motor support frame (2). A motor (3) that is raised together with the motor (3), and a disk-shaped member that is attached to a drive shaft (3a) of the motor (3) and that can polish the polishing surface (4a) at a predetermined angle at a fixed position as the motor (3) is raised. Polishing frame (4), and a holder support frame () disposed above the polishing disk (4) and movably disposed in the case body (1) in a horizontal direction orthogonal to the axis of the motor (3). 5), a cylindrical holder guide (6) rotatably supported in a vertical position on a holder support frame (5), and a detachably inserted and mounted electrode holder (6) on the holder guide (6). The tip side is the polishing surface (4a) of the polishing machine (4). An electrode rod holder (7) that is detachably held and fixed in a contact state; and a rotation drive mechanism (10) that is disposed in the case body (1) and that rotates the holder guide (6) together with the electrode rod holder (7). 8)
And a swing drive mechanism (9) disposed in the case body (1) for reciprocating the holder support frame (5) in a horizontal direction orthogonal to the axis of the motor (3). And electrode rod polishing machine. 2. A case body (1) and a case body (1).
And a motor support frame (2) supported by the case body (1) to be able to be raised and adjusted in angle, and a motor support frame (2) fixedly supported by the motor support frame (2). A motor (3) that is raised together with the motor (3), and a disk-shaped member that is attached to a drive shaft (3a) of the motor (3) and that can polish the polishing surface (4a) at a predetermined angle at a fixed position as the motor (3) is raised. And a polishing machine (4), which is disposed above the polishing machine (4) on the case body (1), and is provided with a predetermined distance in a horizontal direction perpendicular to the axis of the motor (3) by a swing amount adjusting screw. Swing plate (54) movably supported, and swing plate (54)
A cylindrical holder guide (6) having a lower end protruding into the case body (1) and a detachable insertion / removal attachment to the holder guide (6). An electrode rod holder (7) for detachably holding and fixing (A) with its tip end side abutting against the polishing surface (4a) of the polishing machine (4); and a holder disposed in the case body (1). An electrode rod polishing machine, comprising: a rotation drive mechanism (8) for rotating the guide (6) together with the electrode rod holder (7). 3. An electrode rod holder (7) comprising: a cylindrical chuck guide (26); and a collet chuck (27) inserted into the distal end of the chuck guide (26) and having an electrode rod insertion hole (27a). And a cylindrical chuck screw (28) inserted from the base end of the chuck guide (26) and having a distal end screwed to the collet chuck (27). 3. The electrode bar polishing machine according to 2. 4. A setting gauge (1) capable of adjusting the amount of protrusion of the electrode rod (A) held and fixed by the case body (1) on the electrode rod holder (7) and setting the amount of polishing of the electrode rod (A). The electrode bar polishing machine according to claim 1 or 2, further comprising (10). 5. The electrode rod according to claim 1, wherein the case body (1) includes a dust case (17) that can be pulled out below the polishing plate (4). Polishing machine.