JP2003001435A - Chip collector for tip dresser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chip collector for a tip dresser which has simple structure, can be miniaturized, and is excellent in versatility. SOLUTION: A dresser body 6a is sidewise installed, a chip capturing case 12A is fitted to the tip thereof, chips generated when shaping electrode tips are captured within a case, and discharged into a chip collection vessel 13 from a chip outlet 12g opened in a lower part of the case. A pair of electrode tips facing each other held by a tip of a welding gun are advanced horizontally from the direction of an arrow. Tip insertion surfaces 12a and 12b with a tip insertion port 12c for permitting the insertion of the electrode tips of the chip capturing case 12A opened therein are formed in a wedge shape expanding in the direction from a front end position to a rear end position with respect to the advancing direction of the welding gun, and thus, the electrode tips can be smoothly led to the tip insertion port 12c without expanding the space between the electrode tips than required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip collecting device for a chip dresser which collects chips generated when shaping an electrode chip.

[0002]

2. Description of the Related Art Conventionally, an electrode tip used for spot welding or the like is worn (deformed or worn) when the welding operation is repeated. If the welding work is performed with the worn electrode tip, the desired welding quality cannot be obtained. Therefore, the electrode tip is periodically shaped (dressing) to maintain the welding quality.

For example, in Japanese Unexamined Patent Publication No. 6-122082, a pair of electrode tips provided at mutually opposing tips of a welding gun presses the upper and lower surfaces of a shaping body, and then the welding gun is attached to the electrode tip. There is disclosed a tip dresser that shapes an electrode tip by swinging around an axis and polishing.

By the way, in recent years, in order to reduce material costs and environmental problems, it has been considered to reuse chips, and a collecting container is arranged below the shaping body, and the collected chips are collected in the collecting container. I try to reuse the powder.

However, the chips are easily scattered by the relative swing or rotation of the shaping body and the electrode tip during the polishing work,
Not all chips are collected in the collection container, and there is a problem that the collection rate is low.

In addition, in order to prevent clogging of the shaping body, when air is blown to the shaping body, the blowing air scatters chips.
The chip recovery rate will be even lower.

Generally, copper is often used as an electrode tip used in spot welding or the like, but if it is attempted to maintain an appropriate welding quality, the frequency of polishing increases, and the grinding dust or polishing dust of the electrode tip is increased. (Chips) will increase, so
In order to reduce material costs, it is necessary to increase the chip recovery rate so that it can be reused effectively.

Therefore, various techniques have been proposed in which a chip collecting device is attached to the dresser main body which holds the shaping body, and the chip collecting device collects the chips generated when shaping the electrode chip.

For example, in Japanese Utility Model Publication No. 3-18067, by mounting a cover body on the dresser body, an air introduction path and an air discharge path are provided between the cover body and the upper and lower surfaces of the dresser body. The compressed air after forming and driving the shaped body held in the holder is guided to the holder through the air introduction path, and the compressed air that has passed through the holder is also guided through the air discharge path to the end portion of the cover body. There is disclosed a technique of collecting chips generated in chip polishing or grinding into a chip collection container by guiding the chips to a chip collection container connected to the chip.

[0010]

Since the chip collecting apparatus disclosed in this prior art is adapted to collect chips by utilizing compressed air, the compressed air is guided around the shaping body. However, there is a problem that the structure becomes complicated because it is necessary to form the air introduction path and the air discharge path.

Further, since the compressed air after driving the shaping body is used, it cannot be assembled to a chip dresser which does not use compressed air as a drive source, which is inconvenient.

In view of the above circumstances, it is an object of the present invention to provide a chip collecting device for a chip dresser which has a simple structure, can be miniaturized, and is excellent in versatility.

[0013]

In order to achieve the above object, a chip collecting device for chip dresser according to the present invention narrows a shaping body held in a dresser body by a pair of facing electrode tips to narrow the shaping body. In a chip dresser that shapes the electrode chip by relative sliding with the pair of electrode chips, a chip capturing case that covers the shaping body is attached and fixed to the dresser body, and the pair of electrode chips of the chip capturing case is fixed. Each of the chip insertion ports is opened at a position for inserting, and a shielding member that allows insertion of the electrode chip by elastic deformation is arranged at each of the chip insertion ports, and a chip discharge port is provided at the bottom of the chip capturing case. It is characterized by being provided.

In such a structure, a dressing trapping case for covering the shaping body is attached to the dresser main body, a chip insertion port for inserting an electrode chip is opened in the chipping trapping case, and the chip insertion port is elastically deformed. Since the shielding member that allows the insertion of the electrode tip is arranged and the chip discharge port is provided in the lower part of the chip catching case, the chip can be downsized and excellent in versatility.

In this case, preferably, 1) the dresser main body is supported in a posture in which the shaping body is oriented in a substantially horizontal direction, and the surface of the chip-trapping case where the chip insertion opening is opened is provided with the pair of surfaces. It is characterized in that it is formed in a wedge shape that expands toward the front end position or the rear end position with respect to the approach direction of the electrode tip.

2) The advancing direction of the pair of electrode chips is horizontal, and both sides of the chip capturing case opening the chip insertion opening are expanded from the front to the rear with respect to the advancing direction of the electrode chips. It is characterized in that it is formed in a wedge shape.

3) The pair of electrode chips are inserted in an upward direction, and both surfaces of the chip capturing case, which open the chip insertion opening, are formed in a wedge shape that expands from the upper part to the lower part. To do.

4) The surface of the chip capturing case facing the shaped body is brought close to the shaped body, the chip insertion opening is opened in the facing surface, and the dresser body is inserted into the rear part of the chip capturing case. It is characterized by having an open mouth.

5) The dresser main body is supported in a posture in which the shaping body is oriented obliquely in the vertical direction, and the upper portion of the chip catching case is bent along the inclination direction of the dresser main body to make the chip catching case. It is characterized in that chip insertion openings are opened on a surface of the upper surface facing the shaping body and an outer surface of the chip capturing case.

6) At least the upper inner circumference of the chip catching case is formed into a cylindrical shape, and the chip catching case is formed on the tip end surface of the dresser body which is laterally inserted into the upper inner circumference of the chip catching case. Is provided with a contact surface having substantially the same curvature as the inner circumference of the upper part.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a chip collecting device according to a first embodiment of the present invention. Here, FIG. 1 is a perspective view of the chip collecting apparatus, and FIG. 2 is a cross-sectional plan view of a main part of FIG.

Reference numeral 1 in FIG. 2 is a welding gun connected to a welding robot. The welding gun 1 is provided with first and second gun arms 2 and 3. The tip of both gun arms 2 and 3 is provided with an electrode tip 4. , 5 are detachably attached so as to face each other. The two electrode chips 4 and 5 are coaxially arranged, and the at least one of the gun arms 2 and 3 moves forward and backward so that the two electrode chips 4 and 5 are relatively close to and separated from each other.

Further, reference numeral 6 in FIG. 1 is a tip dresser for shaping (dressing) the tips of the electrode tips 4 and 5, and is arranged at a position where the welding work is not hindered in the working range of the welding robot. ing. A dresser body 6a extends laterally from the tip dresser 6. At the tip of the dresser body 6a, there is provided a holder portion 6b for holding the shaping body 7 so as to be rotatable or swingable. The dresser body 6a is formed in a rectangular parallelepiped flat plate shape, and is fixed in a so-called sideways posture in which table surfaces 6c and 6d parallel to each other are arranged in a substantially vertical direction.

Therefore, as shown in FIG. 2, the shaping body 7 is
The electrode chips 4, which are provided on both sides of the shaping body 7,
The holder 5 is held in a state in which concave cutters 7a and 7b that can be shaped into a predetermined shape by polishing or grinding are directed in a substantially horizontal direction.

A motor 8 is fixedly mounted on the base of the dresser body 6a, and the shaping body 7 is rotated or rocked by the motor 8. The motor 8 is not limited to an air motor that uses compressed air as a drive source, and may be an ordinary electric motor.

Reference numeral 11 denotes a chip collecting device, which is a chip catching case 12B mounted on the tip of the dresser main body 6a and covering the periphery of the holder part 6b, and a chip falling from this chip catching case 12B. And a chip collecting container 13 for collecting.

Dresser body 6 of the chip capturing case 12B
chip insertion surface 12 facing the table surfaces 6c and 6d of a.
a and 12b are formed in a wedge shape that widens from the tip of the dresser body 6a toward the base.
A chip insertion opening 12c is opened in 2a and 12b.

Further, the end faces 12d in the converging direction of both chip insertion faces 12a, 12b of the chip capturing case 12B are fixed to the tip end face of the dresser body 6a via fasteners such as screws. Further, an escape hole 12e through which the dresser body 6a is inserted is opened on the back surface of the chip capturing case 12B.
In addition, the chip guide surface 12 is provided at the bottom of the chip capturing case 12B.
f is formed in a tapered shape that converges downward, and a chip discharge port 12g is formed at the lower end of this chip guide surface 12f.

A shielding member 14 is provided at the tip insertion port 12c. The shielding member 14 is composed of a pair of brushes 14a and 14b that are arranged above and below the tip insertion opening 12c so as to face each other. Each of the brushes 14a and 14b is made of an elastic material such as nylon, and its base is located at the upper and lower edges of the tip insertion port 12c.
It is screwed via a and 15b.

The tips of both brushes 14a and 14b are brought into contact with each other at substantially the center of the tip insertion opening 12c, and the tip insertion opening 1
2c is shielded. In addition, in the shielding member 14, chips generated when shaping the electrode chips 4 and 5 are formed by the chip insertion opening 1
Airtightness is not required because it is intended to prevent scattering from 2c to the outside.

On the other hand, a chip collecting container 13 is installed below the chip discharge port 12g opened at the lower end of the chip capturing case 12B. The chip collection container 13 may be suspended from the chip discharge port 12g. When suspending the chip capturing case 12B, it is preferable that the chip collecting container 13 is lightweight. For example, the upper part of the PET bottle can be cut and the lower part can be used as the chip collecting container 13. is there.

Next, the operation of this embodiment having such a configuration will be described. When the tip ends of the electrode tips 4 and 5 are shaped after the spot welding work using the welding robot is finished in a predetermined manner, first, the pair of gun arms 2 and 3 provided in the welding gun 1 are taught in advance. In accordance with the operation, the electrode tips 4 and 5 facing each other are inserted into the dresser main body 6a from the front of the dresser main body 6a (in the direction of the arrow in FIG. 1) in a posture in which the electrode tips 4 and 5 are kept horizontal.

The chip insertion surfaces 12a and 12b formed on both sides of the chip catching case 12B are formed in a wedge shape expanding from the front end position to the rear end position with respect to the approaching direction of the pair of gun arms 2 and 3. Therefore, the electrode tips 4 and 5 mounted on the tips of the gun arms 2 and 3 are not opened more than necessary, and the electrode tips 4 and 5 are opened on the tip insertion surfaces 12a and 12b. Insertion slot 12c
Can be smoothly guided to.

Then, both electrode tips 4 and 5 are made to enter the chip capturing case 12B from the respective tip insertion openings 12c. The tip insertion openings 12c are shielded by brushes 14a and 14b extending from above and below, and when the electrode tips 4 and 5 attached to the tips of both gun arms 2 and 3 are inserted, the brushes 14a and 14b are connected to the electrode tips. Around the base portions of the electrode tips 4, 5 and the tip portions of the gun arms 2, 3 holding the base portions, which are elastically deformed along the tip portions of the gun arm portions 2, 5 holding the base portions. To block.

Then, when the axial centers of the electrode tips 4 and 5 face the central axis of the shaping body 7 held by the holder portion 6b, the directions in which the electrode tips 4 and 5 are brought close to each other. By moving it relative to
5 are cutters 7a provided on both sides of the shaping body 7,
7b, and the shaping body 7 is narrowed by the two electrode tips 4 and 5.

The shaping body 7 is rotated or oscillated by a motor 8 such as an air motor provided in the dresser main body 6a, and the cutter 7 provided in the shaping body 7 is driven.
At a and 7b, the tips of the electrode tips 4 and 5 are polished or ground to be shaped as desired.

In this case, since the dresser body 6a is supported with the table surfaces 6c and 6d standing upright, the chips generated when shaping the electrode tips 4 and 5 are the table surfaces 6c and 6d. From the gap formed by the inner peripheral surface of the chip capturing case 12B, the chips are dropped downward, and the dropped chips are converged along the chip guide surface 12f formed in the lower part of the chip capturing case 12B. The chips are then collected from the chip discharge port 12g and accumulated in the chip collection container 13 installed below the chip discharge port 12g.

On the other hand, when the shaping of the electrode tips 4 and 5 is completed in a predetermined manner, the welding robot separates the first and second gun arms 2 and 3 from the dresser main body 6a by an operation opposite to that at the time of insertion, and Wait for spot welding.

Then, when the amount of chips accumulated in the chip collection container 13 reaches a predetermined amount or periodically, the chips accumulated in the chip collection container 13 are recovered and reused.

As described above, according to this embodiment, the table surfaces 6c and 6d of the dresser body 6a are erected, and the periphery of the holder portion 6b holding the shaping body 7 is covered with the chip capturing case 12B. Therefore, the cutting chips generated when shaping the electrode tips 4 and 5 can be dropped and collected from both table surfaces 6c and 6d sides of the dresser body 6a. The structure of 11 is simplified, and it is possible to realize lightweight and compactness.

Further, since the chip insertion surfaces 12a and 12b of the chip catching case 12B are formed in a wedge shape that expands from the front end position toward the rear end position with respect to the approaching direction of the welding gun 1, both gun arms 2 and 3 are formed. Since it is possible to smoothly guide the electrode tips 4 and 5 held in the tip to the tip insertion opening 12c without unnecessarily widening them, workability is improved.
Therefore, for example, even with an X-type welding gun in which the distance between the pair of electrode tips 4 and 5 cannot be increased too much, the electrode tips 4 and 5 can be smoothly guided to the tip insertion opening 12c.

Further, FIGS. 3 and 4 show a second embodiment of the present invention. Here, FIG. 3 is a perspective view of the chip collecting device, and FIG.
FIG. 4 is a sectional front view of a main part of FIG. 3.

In the above-described first embodiment, the welding gun 1
The case where the electrode chips 4, 5 facing each other are inserted into the dresser main body 6a from the front of the dresser main body 6a in a posture in which the horizontal state is maintained is described, but in the present embodiment, the electrode chips 4, 5 facing each other are inserted. A mode in which 5 is lowered from above the dresser main body 6a in a posture in which the horizontal state is maintained will be described.

Chip insertion surface 12 of the chip capturing case 12B
a and 12b are formed in a wedge shape that expands downward from the upper surface of the dresser main body 6 (front end position with respect to the welding gun 1 approaching direction) and downward (rear end direction with respect to the welding gun 1 entering direction). Upper end surface 12h of the insertion surfaces 12a and 12b
Are fixed to the upper surface of the dresser body 6a via fasteners such as screws.

Further, a pair of brushes 14a and 14b constituting the shielding member 14 are arranged in the front and rear direction so as to face each other at the tip insertion opening 12c opened in the tip insertion surfaces 12a and 12b, and sandwiched by the plates 15a and 15b. It is fixed in place.

According to this structure, the chip insertion surfaces 12a and 12b provided on the chip catching case 12B are moved backward from the front end position with respect to the approaching direction of the pair of gun arms 2 and 3 (the direction of the arrow in FIG. 3). Since it is formed in a wedge shape that expands in the end position direction, the electrode tips 4 and 5 are attached to the tips of the gun arms 2 and 3 without unnecessarily widening them, and the electrode tips 4 and 5 are inserted into the tip insertion port 12c. Can be smoothly guided to. Other functions and effects are the same as those in the first embodiment, and thus the description thereof will be omitted.

Further, FIGS. 5 and 6 show a third embodiment of the present invention. Here, FIG. 5 is a perspective view of the chip collecting device, and FIG. 6 is a cross-sectional plan view of the main part of FIG.

Chip capturing case 12C according to the present embodiment
Is formed in the shape of a rectangular parallelepiped, has a chip discharge port 12j at the bottom thereof, and has an escape hole 12e on the back surface for inserting the dresser body 6a. Further, the tip surface of the dresser body 6a is cut into chips. It is fixed to the inner surface of the capture case 12C via a bolt or the like.

Further, the holder portion 6 provided on the dresser body 6a
Cutters 7a, 7b provided on the shaping body 7 held by b
On the chip insertion surfaces 12a, 12b opposite to the table surfaces 6c, 6d where the is exposed, chip insertion openings 12c are provided in a projecting manner corresponding to the cutters 7a, 7b. An elastic shielding member 21 made of rubber or the like formed in a cap shape is externally mounted, and its outer periphery is prevented from coming off by a ring-shaped clip 22.

As described above, according to the present embodiment, the chip capturing case 12C has a rectangular parallelepiped shape, the chip discharge port 12j and the escape hole 12e are formed in the bottom and the back surface, and the chip insertion surface is formed. 12a, 12b chip insertion opening 12c
Since it has a simple shape with only protruding portions, it is easy to manufacture and has a simple structure in which a cap-shaped shielding member 21 is attached to the chip insertion opening 12c.
It is possible to realize a lighter weight and a more compact size than those of the above-described embodiments.

Further, FIGS. 7 and 8 show a fourth embodiment of the present invention. Here, FIG. 7 is an exploded perspective view of the chip collecting apparatus, and FIG. 8 is a vertical cross-sectional side view of FIG. 7. In the chip collecting device according to the present embodiment, even if the gun arm 2 is relatively long,
The tips of the electrode tips 4 and 5 can be polished or ground without occupying a large area.

That is, the dresser main body 6a according to the present embodiment is extended in an obliquely inclined posture as shown in FIG. On the other hand, a chip capturing case 25 covering the periphery of the holder portion 6b provided on the dresser body 6a.
Is formed in a vertically long tubular shape, and its upper portion is directed obliquely rearward along the inclination of the dresser body 6a,
The upper surface of the dresser main body 6a is provided substantially in parallel with the upper table surface 6d of the dresser body 6a, and a circular chip insertion opening 25a is provided on the upper surface. Further, a chip insertion port 25b is opened on the outer surface of the chip capturing case 25.

The dresser main body 6a is inserted through an escape hole 12e formed in one side surface of the chip catching case 25, and its tip is screwed to the other side surface of the chip catching case 25. Further, a resilient shield member 21 made of rubber or the like formed in a cap shape is attached to the circular chip insertion opening 25b, and is prevented from coming off by a ring-shaped clip (not shown). In addition, the tip insertion opening 25 opened on the outer surface
a, a pair of brushes 26a and 2a constituting the shielding member 26
6b are arranged so as to face each other in the left-right direction, and their bases are clamped and fixed to the outer edge of the chip insertion opening 25a by plates 27a and 27b.

Further, a chip discharge port 25c is opened on the bottom surface of the chip capturing case 25, and the chip collecting container 13 is arranged in the discharge direction of the chip discharge port 25c.

In such a configuration, the first gun arm 2
Even if is relatively long, the first gun arm 2 can be mounted diagonally to the lower table surface 6c of the dresser main body 6a, so that the first gun arm 2 can be attached to the tip without occupying a large space. The electrode tips 4 and 5 that are formed can be polished or ground. Of course, it goes without saying that the chip collecting apparatus according to the present embodiment can be applied even when the length of the first gun arm 2 is short.

Further, FIGS. 9 and 10 show a fifth embodiment of the present invention. Here, FIG. 9 is an exploded perspective view of the chip capturing case, and FIG. 10 is an upper cross-sectional plan view showing the chip capturing case for each mode. In the present embodiment, an escape hole 30e for inserting the dresser main body 6a is formed in the chip capturing case 30 by post-processing.

That is, the chip catching case 30 is formed in a vertically long cylindrical shape, and the welding gun 1 (see FIG. 2) has a pair of opposing gun arms 2 and 3 holding the electrode tips 4 and 5 in a vertical state. The chip capturing case 30 is entered in the maintained posture.

On one side surface of the chip capturing case 30, the first
A circular tip insertion opening 30a for allowing the electrode tip 5 held at the tip of the gun arm 2 to enter is opened, and a circular tip for allowing the electrode tip 5 mounted at the tip of the second gun arm 3 to enter at the upper part. An insertion port 30b is provided so as to project, and a chip discharge port 30c is opened at the bottom.

As shown in FIG. 10, a chip capturing case 30
The inner peripheral surface and the outer peripheral surface of the upper part of are formed in a coaxial circular shape. Further, the tip insertion port 30a is formed flat, and the pair of brushes 14a, 14a constituting the shielding member 14 is formed.
b are arranged so as to face each other in the left-right direction, and the plates 15a,
It is clamped and fixed by b. Further, an elastic shield member 21 made of rubber or the like formed in a cap shape is attached to the chip insertion opening 30b formed in the upper portion, and a ring-shaped clip 22 prevents the shield member 21 from coming off.

The tip end surface of the dresser body 6a is provided with an internal spacer 31 having a convex contact surface 31a formed with the same curvature as the upper inner circumference of the chip capturing case 30.
It is brought into contact with the upper inner peripheral surface of the chip capturing case 30. on the other hand,
An outer spacer 32 having a concave contact surface 32a formed with substantially the same curvature as the outer periphery is in contact with the outer peripheral surface, and the chip capturing case is provided via the both spacers 31, 32. 30 is fixed to the tip surface of the dresser body 6a.

By the way, the positional relationship between the welding robot and the tip dresser differs from station to station, and therefore the direction in which the welding gun 1 enters the dresser body 6a also differs from station to station.

In this embodiment, when the chip capturing case 30 is not provided with the escape hole 30e and the screw insertion hole 30f at the time of manufacturing and assembling, the specific dresser body 6a to be mounted is determined. Checking the dresser main body 6a and the approaching direction of the welding gun 1 to the dresser main body 6a, the escape hole 30e and the screw so that the tip insertion opening 30b is oriented in the best direction with respect to the approaching direction of the welding gun 1. The through hole 30f is post-processed.

That is, for example, the welding gun 1 is shown in FIG.
As shown in (a), when entering from the front of the dresser main body 6a, the tip insertion opening 30a opened on the side surface of the chip capturing case 30 is directed toward the front of the dresser main body 6a, and the upper part of the rear surface is An escape hole 30e is formed, and a screw insertion hole 30f is formed in front of this escape hole 30e.

Then, the front end surface of the dresser body 6a is inserted through the escape hole 30e, and the front end surface is inserted into the inner spacer 3
1 to contact the inner peripheral surface of the chip capturing case 30.
Further, an outer spacer 32 is brought into contact with the outer peripheral surface thereof, and the chip catching case 30 is screwed to the front end surface of the dresser body 6a via the both spacers 31 and 32.

Further, when the welding gun 1 enters the dresser main body 6a from the side as shown in FIG. 10 (b),
The tip insertion port 30a is directed in the approach direction of the welding gun 1, and an escape hole 30e is formed at a position where the dresser body 6a is inserted at that time, and a screw insertion hole 30f is formed in front of the escape hole 30e. To do. Then, the chip capturing case 30 is fixed to the front end surface of the dresser body 6a in the same procedure as described above.

In this case, the contact surfaces 31a, 32a of the inner spacer 31 and the outer spacer 32 are formed by the chip capturing case 3
Since it is formed with almost the same curvature as the upper inner peripheral surface and the outer peripheral surface of No. 0, this chip capturing case 30 can be attached to the tip of the dresser body 6a in any direction of 360 °. It will be possible. Further, since it has a simple structure, it can be manufactured at extremely low cost.

[0067]

As described above, according to the present invention,
The collection rate of chips generated when shaping the electrode chip can be increased, and the reuse rate can be improved.

Further, not only the structure of the chip catching case is simple and miniaturization can be realized, but also excellent versatility can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a chip collecting device according to a first embodiment of the present invention.

FIG. 2 is a sectional plan view of the main part of FIG.

FIG. 3 is a perspective view of a chip collecting device according to a second embodiment of the present invention.

FIG. 4 is a sectional front view of the main part of FIG.

FIG. 5 is a perspective view of a chip collecting device according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional plan view of relevant parts of FIG.

FIG. 7 is an exploded perspective view of a chip collecting device according to a fourth embodiment of the present invention.

8 is a vertical sectional side view of FIG.

FIG. 9 is an exploded perspective view of a chip capturing case according to a fifth embodiment of the present invention.

FIG. 10 is a plan view of an upper cross section showing the same chip capturing case according to each embodiment.

[Explanation of symbols]

4, 5 electrode tip 6 Chip dresser 6a Dresser body 7 Shaped body 12A, 12B, 25, 30 Chip capture case 12g, 30c Chip outlet 31a contact surface

Claims (7)

[Claims] 1. A chip dresser for narrowing a shaping body held by a dresser body by a pair of opposing electrode tips, and shaping the electrode tip by relative sliding between the shaping body and the pair of electrode tips. The chip capturing case that covers the shaped body is attached and fixed to the dresser body, the chip insertion ports are opened at the positions where the pair of electrode chips of the chip capturing case are inserted, and the chip insertion ports are elastically deformed by elastic deformation. A chip collecting device for a chip dresser, comprising a shielding member for allowing the insertion of the electrode chip, and a chip discharge port provided at a lower portion of the chip capturing case. 2. The dresser main body is supported in a posture in which the shaping body is oriented in a substantially horizontal direction, and a surface of the chip capturing case where the chip insertion opening is opened is in a direction in which the pair of electrode chips enter. The chip collecting device for chip dresser according to claim 1, wherein the chip collecting device is formed in a wedge shape that widens from the front end position toward the rear end position. 3. The pair of electrode chips are inserted in a horizontal direction, and both surfaces of the chip capturing case opening the chip insertion opening are expanded from the front to the rear with respect to the electrode chip entering direction. The chip collecting device for chip dresser according to claim 2, wherein the chip collecting device is formed in a wedge shape. 4. The pair of electrode tips are directed in an upward direction, and both surfaces of the chip capturing case that open the tip insertion opening are formed in a wedge shape that expands from an upper portion to a lower portion. The chip collecting device for chip dresser according to claim 2. 5. A surface of the chip capturing case facing the shaped body is brought close to the shaped body, the chip insertion opening is opened in the facing surface, and the dresser body is inserted into a rear portion of the chip capturing case. The chip collecting device for a chip dresser according to claim 2, wherein a mouth is opened. 6. The dresser main body is supported in a posture in which the shaping body is directed obliquely in the vertical direction, and the upper part of the chip catching case is bent along the inclination direction of the dresser main body, The chip collecting device for a chip dresser according to claim 1, wherein a chip insertion port is opened on a surface of the upper surface facing the shaping body and an outer surface of the chip capturing case. 7. A chip catching case, wherein at least an upper inner circumference of the chip catching case is formed into a cylindrical shape, and the tip end surface of the dresser body is inserted laterally into the upper inner circumference of the chip catching case. The chip collecting device for the chip dresser according to claim 1, wherein a contact surface having a curvature substantially the same as the inner circumference of the upper part of the chip is provided.