JP6342442B2 - Holding member cleaning device - Google Patents

Description

  The present invention relates to a holding member cleaning device for cleaning a holding member that holds the metal workpiece in a cylindrical workpiece cutting device that cuts a cylindrical metal workpiece under the action of laser light.

  As a power transmission belt employed in a continuously variable transmission of an automobile, a laminated ring in which a plurality of metal rings are laminated is used. For example, as described in Patent Document 1, the metal ring constituting the laminated ring is formed by first welding both end edges of a rectangular metal thin plate to form a cylindrical metal workpiece, The metal workpiece is produced by cutting into a circular shape with a predetermined width under the action of laser light.

  In this cutting method, the metal workpiece is passed through a holding member having a substantially cylindrical shape. Thereafter, the diameter of the holding member is increased and the side wall is brought into contact with the inner peripheral surface so that the holding member is corrected to a substantially circular shape and is held on the side wall. In this state, the metal workpiece is rotated together with the holding member, and laser light is irradiated from the outer peripheral wall side of the metal workpiece.

  Here, a plurality of annular grooves extending along the circumferential direction are formed on the side wall of the holding member, and laser light is emitted when the laser light irradiation means is positioned above each annular groove.

  In the metal workpiece irradiated with the laser beam, a part is melted and scattered in the annular groove. That is, the molten scattered matter is captured in the annular groove. The molten scattered matter is solidified in the annular groove to become a solidified product called sputter. If a part of the spatter is exposed from the annular groove, it becomes difficult to correct the metal workpiece into a substantially circular shape. Further, there is a concern that the metal workpiece may be damaged by sputtering during the contact.

  In order to avoid such problems, the present applicant has proposed a cleaning means for cleaning the holding member in Patent Document 2.

JP 2011-167702 A Japanese Patent Laid-Open No. 2014-24094

  The present invention has been made in relation to the above-described prior art, and can be used to more efficiently remove spatters, and can also prevent the removed spatters from reattaching to the holding members. The purpose is to provide.

In order to achieve the above object, the present invention holds and rotates the metal workpiece with a cutting device that cuts a cylindrical metal workpiece with a laser beam, and on the inner peripheral surface of the metal workpiece. the side wall facing, a holding member cleaning device for cleaning a linear groove extending along the longitudinal direction, the holding member circumferential grooves are each made plural form extending along the circumferential direction,
A rotation mechanism for rotating the holding member removed from the cutting device ;
A rotating brush inserted into the circumferential groove and the linear groove;
A suction mechanism that is disposed on the downstream side in the rotation direction of the holding member with respect to the rotary brush and performs suction;
A compressed gas supply mechanism that is located between the rotating brush and the suction mechanism and supplies compressed gas;
A straight brush that is inserted into the linear groove and travels along the linear groove;
With
The rotating brush is inserted into the circumferential groove and the linear groove, the compressed gas is supplied, and the suction is performed in a state where the holding member is rotated by the rotating mechanism.

  As described above, in the present invention, first, the rotating brush enters the groove on the upstream side in the rotation direction. Thereby, the sputter | spatter adhering in this groove | channel can be scraped off. Thereafter, the sputter is pushed out of the groove by discharging (supplying) compressed gas downstream in the rotation direction. This removes most of the spatter.

  Further, suction is performed on the downstream side in the rotation direction of the compressed gas supply mechanism. Thereby, especially the spatter adhering to the side wall of the holding member is removed. Therefore, when the metal workpiece is cut next time, it is avoided that it becomes difficult to correct the metal workpiece to have a substantially circular cross section due to the spatter attached to the side wall of the holding member.

  As described above, by adopting the above configuration, it is possible to efficiently remove spatter. Moreover, it can avoid that the removed sputter | spatter adheres to a holding member again.

Here, as one of the grooves, when the linear groove extending along the height direction of the holding member is formed, sputtering, tendency to adhere to the wall surface of the rotating direction on the upstream side of the straight line groove is there. Therefore, when performing cleaning, it is preferable to rotate the holding member in the same direction as the rotation direction when cutting the metal workpiece under the action of the rotation mechanism. Thereby, it is possible to preferentially clean and clean the wall surface to which a large amount of spatter adheres.

  The suction mechanism and the compressed gas supply mechanism are preferably arranged on the diameter of the holding member. This is because the force and suction force when the discharged compressed gas collides with the holding member are larger than when the discharge and suction are performed from the direction inclined with respect to the diameter. Thus, spatter can be removed more efficiently, and reattachment can be further avoided.

The suction mechanism preferably has a suction nozzle that extends along the longitudinal direction of the holding member and has a plurality of suction ports. In particular, the suction port may be opposed to the side wall of the holding member (part where no groove is formed).

  In this case, since the suction port is divided into a plurality, the local suction force is increased. Therefore, it becomes easy to remove the spatter adhering to the side wall. Further, when the suction port faces the side wall, the suction force acting in the groove is small. Therefore, the slight spatter remaining in the groove is avoided from being drawn toward the outer peripheral side (side wall side) of the holding member. This also effectively prevents spatter from reattaching to the side wall.

Also, more straight brush which is inserted into the linear groove, it is easy in particular scraped off sputter deposited on the wall surface of the straight groove.

  In this case, the groove may be cleaned prior to rotating the holding member. In other words, after the rectilinear brush is detached from the groove (especially the straight groove), the holding member is rotated by the rotation mechanism, and in this state, insertion of the rotating brush into the groove, supply of compressed gas, and suction are performed. You can do it. Thereby, a groove | channel (especially linear groove | channel) can be easily cleaned, without rotating a rectilinear advance brush.

  According to the present invention, the rotating brush that enters the groove of the holding member, the compressed gas supply mechanism that supplies the compressed gas, and the suction mechanism are provided in this order from the upstream side in the rotation direction of the holding member, and scraped off by the rotating brush, The spatter is removed from the groove by blowing off with a compressed gas, and the spatter on the side wall is removed by suction. Therefore, it is possible to efficiently remove spatter in the groove and from the side wall, and it is possible to prevent the spatter from reattaching to the side wall.

It is a front schematic diagram of the cleaning station provided with the holding member cleaning device concerning an embodiment of the invention. It is a schematic whole perspective view of the holding member which is the cleaning object. It is a principal part schematic plan view of the holder holding the brush type brush (straight forward brush) which comprises the holding member cleaning apparatus of FIG. It is a principal part schematic plan view which shows the positional relationship of a roll type brush (rotating brush), a blow nozzle (compressed air supply mechanism), a suction nozzle (suction mechanism), and a holding member. It is a principal part front view which shows the positional relationship of a suction nozzle and a holding member.

  Preferred embodiments of the holding member cleaning device according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic front view of a cleaning station provided with a holding member cleaning device (hereinafter also simply referred to as “cleaning device”) 10 according to the present embodiment. The cleaning station is provided as a section in a work place where a metal workpiece is cut by laser light.

  The cleaning device 10 has a rotary table 12. The holding member 14 to be cleaned is held on the rotary table 12 in a posture in which the longitudinal direction is along the vertical direction, in other words, in a standing posture.

  The cleaning device 10 further includes a roll type brush 16 (rotary brush), a brush type brush 20 (straight forward brush) held by a holder 18, a blow nozzle 22, and a suction nozzle 24. Among these, the roll type brush 16 approaches along the diameter direction of the holding member 14 under the action of a first horizontal movement mechanism (not shown) and the blow nozzle 22 and the suction nozzle 24 under the action of a second horizontal movement mechanism (not shown). Alternatively, it can be displaced in the direction of separation. As will be described later, the blow nozzle 22 and the suction nozzle 24 are integrally displaced.

  On the other hand, the brush type brush 20 is lowered or raised together with the holder 18 under the action of a lifting mechanism (not shown). Preferable specific examples of the first horizontal movement mechanism, the second horizontal movement mechanism, and the lifting mechanism include an air cylinder.

  Here, the holding member 14 will be described with reference to FIG. The holding member 14 is for holding the metal workpiece when laser beam cutting is performed on the metal workpiece in the cutting apparatuses described in Patent Documents 1 and 2. Since the configuration of the cutting device and the function of the groove, which will be described later, are described in detail in Patent Documents 1 and 2, detailed description thereof will be omitted.

  As shown in FIG. 2, the holding member 14 includes a large-diameter portion 30, a first tapered reduced-diameter portion 32 that protrudes from the large-diameter portion 30 and decreases in a taper shape as it is separated from the large-diameter portion 30 It is a hollow body having a second tapered reduced diameter portion 34 and having an insertion hole 36 formed therethrough along the longitudinal direction thereof.

  The holding member 14 is formed with a plurality of first straight grooves 38 and second straight grooves 40 that are formed by cutting the holding member 14 linearly along the longitudinal direction so as to be radial. Both the first linear groove 38 and the second linear groove 40 open on the insertion hole 36 and the side wall side. That is, the first straight groove 38 and the second straight groove 40 are bottomless grooves (through grooves) having no bottom surface.

  The first linear groove 38 extends from the tip of the first tapered reduced diameter portion 32 to the middle of the second tapered reduced diameter portion 34. That is, it is an open end on the first tapered reduced diameter portion 32 side, and a closed end on the second tapered reduced diameter portion 34 side. On the contrary, the second linear groove 40 extends from the tip of the second tapered reduced diameter portion 34 to the middle of the first tapered reduced diameter portion 32, and is on the first tapered reduced diameter portion 32 side. Is a closed end, and an open end on the second tapered reduced diameter portion 34 side.

  The first linear grooves 38 and the second linear grooves 40 are spaced apart from each other at substantially equal intervals and are alternately arranged in parallel. In the present embodiment, the number of the first linear grooves 38 and the second linear grooves 40 is eight. That is, the phase difference between adjacent linear grooves is about 22.5 °.

  On the side wall of the holding member 14, a plurality of circumferential grooves 42 are formed that extend along the circumferential direction of the side wall and open to communicate with the first linear grooves 38 and the second linear grooves 40 adjacent to each other. . As can be seen from FIG. 2, the circumferential groove 42 does not reach the insertion hole 36.

  The holding member 14 is entirely coated with a side wall, an inner peripheral surface of the insertion hole 36, each side surface of the first linear groove 38, the second linear groove 40, each side surface and each bottom surface of the circumferential groove 42 (not shown). Covered with. Suitable examples of the material for the coating include copper or a copper alloy. In this case, it is particularly easy to form the coating by plating.

  Next, components of the cleaning device 10 will be described. The turntable 12 is provided on a rotating shaft of a rotating mechanism (not shown), and can be continuously rotated or index rotated by a predetermined angle (for example, about 22.5 °). As the rotary table 12 rotates, the holding member 14 supported by the rotary table 12 also rotates integrally.

  The roll type brush 16 is for cleaning the circumferential groove 42, the first linear groove 38 and the second linear groove 40, and the brush type brush 20 is used for the first linear groove 38 or the second linear groove 40. It is for cleaning. First, the brush type brush 20 will be described in order to match the operation sequence (described later) of the cleaning device 10.

  FIG. 3 is a schematic plan view of the main part of the holder 18 holding the brush type brush 20. The holder 18 is a rectangular tube-shaped hollow body whose outer wall is bent into a regular octagonal cross section and whose inner wall is curved in a perfectly circular cross section. Displacement members (rods or the like) (not shown) constituting the elevating mechanism are connected to, for example, two outer walls separated from each other by 180 °.

  The holder 18 is formed with eight accommodating recesses 60 that extend along the height direction (vertical direction in FIG. 1) and open on the inner wall side. A rod-shaped head 62 of the brush type brush 20 is inserted into each housing recess 60. The rod-shaped head 62 is blocked by the bottom surface of the receiving recess 60 and is firmly supported from three directions by three side surfaces. The brush type brush 20 is held by the holder 18 by the above damming and supporting.

  The rod-shaped head 62 is provided with a large number of hairs extending linearly along the vertical direction. The bristles are exposed from the opening on the inner wall side of the holder 18 in the housing recess 60, and protrude toward the inside in the diameter direction of the inner wall. This protruding portion is inserted into the first straight groove 38 (or the second straight groove 40). That is, the hair of the brush-type brush 20 is not inserted into the second linear groove 40 when inserted into the first linear groove 38, and is not inserted into the first linear groove 38 when inserted into the second linear groove 40. Not inserted. The hair material may be a well-known material for brush hair such as 6,6 nylon.

  As shown in FIG. 4, which is a schematic plan view of the main part, the roll type brush 16 is configured by providing bristles on the outer peripheral surface of the columnar head 64. The columnar head 64 is attached to a rotating plate (not shown) provided at the tip of a displacement member (for example, a rod) (not shown) that constitutes the first horizontal movement mechanism. For this reason, the roll-type brush 16 rotates following the rotation plate as it is urged to rotate.

Hair roll brush 16, in particular, of the first straight grooves 38 and the second linear groove 40 is cut in a shape to preferentially in contact with the side surface of the rotation direction on the upstream side. The material of the hair may be a known material such as 6,6 nylon as with the brush type brush 20.

  The diameter and height of the roll type brush 16 are substantially the same as the diameter and height of the holding member 14. In addition, although the roll type brush 16 also rotates, it is preferable that the rotation speed is larger than the rotation speed of the holding member 14.

  The blow nozzle 22 supplies, in other words, a member for discharging compressed air (compressed gas) to the side surfaces of the first linear grooves 38 and the second linear grooves 40 and the side surfaces and bottom surfaces of the circumferential grooves 42. And constitutes a compressed gas supply mechanism. That is, the blow nozzle 22 is connected to a compressed air supply source via a connection hose (both not shown). The blow nozzle 22 has a discharge port (not shown) for discharging compressed air.

  The blow nozzle 22 is a long object extending along the longitudinal direction of the holding member 14. The discharge port is opened in a long rectangular shape along the longitudinal direction of the blow nozzle 22.

  The blow nozzle 22 configured in this manner is supported by the hollow skirt 72 via the stay 70 and the suction nozzle 24. The suction nozzle 24 is located on the downstream side in the rotation direction of the roll brush 16, and the blow nozzle 22 is located between the roll brush 16 and the suction nozzle 24. The phase difference between the roll brush 16 and the suction nozzle 24 is set to about 180 °, and the phase difference between the blow nozzle 22 and the suction nozzle 24 is set to about 35 °. For this reason, for example, when the suction nozzle 24 faces the first linear groove 38, the blow nozzle 22 faces the side wall where the first linear groove 38 and the second linear groove 40 are not formed.

  The suction nozzle 24 and the hollow skirt 72 constitute a suction mechanism. That is, a suction device such as a pump is connected to the square cylindrical end portion of the hollow skirt 72 via a connection hose (none of which is shown). Therefore, when the suction device is energized, the air in the vicinity of the suction nozzle 24 is sucked from the suction port 74 of the suction nozzle 24 shown in FIG. 5 and discharged through the hollow skirt 72.

  As shown in FIG. 5, the suction nozzle 24 is a long object extending along the longitudinal direction of the holding member 14. A plurality of suction ports 74 are formed in parallel along the longitudinal direction of the suction nozzle 24. One suction port 74 is opened so as to face the side wall of the holding member 14 (a portion that contacts the inner peripheral surface of the metal workpiece).

  In the above configuration, the blow nozzle 22 and the suction nozzle 24 are positioned outside the holding member 14 in the diametrical direction, and are set in a posture in which an air flow caused by discharge and suction flows in a horizontal direction.

  The cleaning device 10 according to the present embodiment is basically configured as described above. Next, the function and effect will be described in relation to the operation of the cleaning device 10.

  As described above, the holding member 14 is used to hold the metal workpiece when the metal workpiece is cut by the cutting device. At this time, the holding member 14 is expanded in diameter. As a result, the metal workpiece is pressed from the inner peripheral surface side. As a result, the cross section is corrected so as to have a substantially perfect circle shape, and the metal workpiece is held by the holding member 14.

  The metal workpiece rotates following as the holding member 14 is urged to rotate. In this state, laser light is irradiated toward the metal workpiece. At this time, the portion irradiated with the laser light substantially coincides with the position of the circumferential groove 42.

  The laser beam is irradiated at a position offset from directly above the holding member 14 to the upstream side in the rotation direction of the holding member 14, in other words, at a position translated from directly above (see FIG. 5 of Patent Document 2). In this way, the portion where the laser beam is incident rises in temperature and sublimates, and is separated from the metal workpiece. That is, it is cut as a metal ring.

  At the time of this cutting, the melt of the metal (for example, maraging steel) which is the raw material scatters from the metal workpiece and enters the circumferential groove 42. The melt is cooled and solidified relatively quickly on the bottom surface or side surface of the circumferential groove 42 to be sputtered. Since the circumferential groove 42 intersects with the first linear groove 38 and the second linear groove 40, spatter may adhere to the side surfaces of the first linear groove 38 and the second linear groove 40.

  Since the laser light is irradiated at the position offset to the upstream side in the rotation direction of the holding member 14 and the metal workpiece as described above, the amount of spatter is increased on the wall surface on the upstream side in the rotation direction.

  After the cutting with the laser beam is completed, the holding member 14 is cleaned. That is, the holding member 14 is removed from the cutting device and held on the turntable 12. Hereinafter, the case where the second tapered reduced diameter portion 34 faces vertically downward and the first tapered reduced diameter portion 32 faces vertically upward during the holding will be described. Note that the following steps are automatically performed by sequence control unless otherwise described.

  First, the holding member 14 is held on the rotary table 12 (see FIG. 1) in a state where each displacement member (rod or the like) constituting the first horizontal moving mechanism, the second horizontal moving mechanism, and the lifting mechanism is retracted. .

  Here, the rotary table 12 has a shape capable of holding the second tapered reduced diameter portion 34 only at a position where the phases of the first linear groove 38 and the brush-type brush 20 match. Further, it is locked so as not to rotate by an external force. For this reason, when the operator holds the second tapered reduced diameter portion 34 on the rotary table 12, the phases of the first linear groove 38 and the brush type brush 20 are matched.

  Alternatively, the arm of the robot that removes the holding member 14 from the cutting device operates appropriately so that the first linear groove 38 and the brush-type brush 20 are in phase while the holding member 14 is being transported to the rotary table 12. The holding member 14 may be held on the rotary table 12.

  In this state, the lifting mechanism is biased. That is, the displacing member extends and the holder 18 is lowered so as to approach the holding member 14. As a result, as shown in FIG. 3, the hair of the brush type brush 20 is inserted from the opening of the first linear groove 38.

  As the displacing member further expands, the brush type brush 20 goes straight so that the holder 18 is lowered together. Since the bristles of the brush type brush 20 are inserted into the first linear grooves 38, the bristles descend along the first linear grooves 38. During the lowering, the spatter adhering to both side surfaces of the first linear groove 38 is scraped off. That is, the first straight groove 38 is cleaned.

  Even if the bristles reach the end point on the second tapered reduced diameter portion 34 side of the first linear groove 38, the lowering of the holder 18 is continued. Since the end point is a closed end, the hair once catches on the wall of the end point and then undergoes elastic deformation. That is, the hair bends outward in the diameter direction of the holding member 14. Thereby, the hair is detached from the first linear groove 38.

  Thereafter, the rotary table 12 is rotated about 1/16 rotation, in other words, the index is rotated by about 22.5 °. With this index rotation, the phase of the second linear groove 40 and the brush type brush 20 is matched. In this state, the displacement member of the lifting mechanism contracts.

  The second straight groove 40 opens vertically downward. Further, as described above, the phases of the second linear groove 40 and the brush type brush 20 are already matched. For this reason, the bristles of the rising brush type brush 20 are inserted into the second linear groove 40. As the displacing member further contracts, the brush type brush 20 ascends (straight forward) together with the holder 18, and the bristles of the brush type brush 20 rise along the second linear groove 40. At the time of this rise, the second straight groove 40 is cleaned by scraping off the spatter adhering to both side surfaces of the second straight groove 40.

  Even after the bristles reach the end point of the second linear groove 40 on the first tapered reduced diameter portion 32 side, the holder 18 continues to rise. Since the end point is the closed end, the bristles are once hooked on the wall of the end point, and then elastically deformed so that the bristles bend outward in the diameter direction of the holding member 14. As a result, the hair is detached from the second linear groove 40.

  Thus, by rotating the holding member 14 in an index manner, the first linear groove 38 and the second linear groove 40 having different phases and different opening positions can be cleaned by a single reciprocating linear movement. .

  The holder 18 is raised to a position before being lowered and stopped. Of course, this stop position is above the brush-type brush 20 sufficiently separated from the holding member 14.

  Next, the rotating mechanism rotates the rotating shaft 12 and the holding member 14 integrally by biasing the rotating shaft. The rotation direction is the same as the rotation direction at the time of cutting with laser light.

  Since the first linear groove 38 and the second linear groove 40 are formed in the holding member 14, if the rotational speed is excessively large, the holding member 14 expands due to centrifugal force. In order to avoid this, it is preferable that the rotational speeds of the rotary table 12 and the holding member 14 are as small as possible. The rotational speed can be set to 60 rpm, for example.

  At substantially the same time, the rotating plate provided in the first horizontal movement mechanism is urged to rotate. Following this, the roll-type brush 16 rotates. The rotation speed of the roll type brush 16 can be set to 20 to 600 rpm, for example, but is preferably as large as possible so that the number of times the hair contacts the holding member 14 is increased. From this point of view, the rotational speed may be set larger than the rotational speed of the holding member 14.

  Further, the displacement members of the first horizontal movement mechanism and the second horizontal movement mechanism extend. As a result, the hair of the roll-type brush 16 is inserted into the circumferential groove 42, and the blow nozzle 22 and the suction nozzle 24 are close to the holding member 14. Then, the supply of compressed air from the compressed air supply source is started, the suction device is energized, and the suction from the suction nozzle 24 is started.

  The bristles of the roll-type brush 16 that have entered the circumferential groove 42 scrape off the spatter adhering to the wall surface of the circumferential groove 42. At this time, the spatter scraped off may remain in the circumferential groove 42. Moreover, since it also enters into the first linear groove 38 and the second linear groove 40, even if spatter remains on these wall surfaces, it is scraped off by the roll-type brush 16. In particular, since the hair is preferentially brought into contact with the wall surface on the upstream side in the rotation direction, the wall surface on the upstream side in the rotation direction to which much spatter adheres can be cleaned.

  Since the holding member 14 is rotating, the portion in contact with the roll-type brush 16 then faces the blow nozzle 22. The compressed air discharged from the blow nozzle 22 flows toward the wall surfaces of the circumferential groove 42, the first linear groove 38, and the second linear groove 40. In other words, an airflow that collides with the wall surface of each groove is generated. For this reason, the spatter scraped off is conveyed to the outer peripheral side of the circulation groove 42 by the air flow and pushed out of the circulation groove 42. That is, spatter is blown off and removed from the circumferential groove 42.

  Since the blow nozzle 22 is positioned on the diameter of the holding member 14, the air current collides with the holding member 14 from a direction orthogonal to the longitudinal direction of the holding member 14. In this case, the force at the time of the collision is larger than the airflow that collides from the direction inclined with respect to the diameter of the holding member 14. That is, the force for blowing off the spatter increases.

  At this point, most of the spatter is removed. Even if the holding member 14 with a slight amount of spatter remaining in the circumferential groove 42 is used at the next cutting, there is no particular effect such as the difficulty of correcting the metal workpiece. Therefore, it is not particularly necessary to try to remove the spatter remaining in the circumferential groove 42 after blowing.

  In this way, while compressed air is being discharged into the circumferential groove 42, the first linear groove 38, and the second linear groove 40, the side wall (portion where the circumferential groove 42 is not formed) faces the suction nozzle 24. Since the air in the vicinity of the side wall is sucked through the suction nozzle 24, if spatter is attached to the side wall, the spatter is peeled off from the side wall and sucked from the suction port 74. Thereby, a side wall is cleaned.

When the suction nozzle 24 is positioned on the diameter of the holding member 14 and performs suction from this direction, the suction force is greater than when suction is performed from a direction inclined with respect to the diameter of the holding member 14. In addition, since the suction port 74 faces the side wall, the local suction force is improved. For this reason, the force which attracts spatter becomes large.

  Since the suction port 74 does not face the circumferential groove 42, it is difficult for a suction force to act on the sputter when the sputter remains in the circumferential groove 42. Therefore, it is possible to avoid that the sputter in the circumferential groove 42 is attracted to the outer peripheral side of the holding member 14 and that the sputter remains on the side wall due to this.

  Moreover, when the suction nozzle 24 faces the first straight groove 38, the blow nozzle 22 faces the side wall (portion where the first straight groove 38 and the second straight groove 40 are not formed). For this reason, it is difficult for the suction force of the suction nozzle 24 to act on the spatter blown off by the compressed air from the blow nozzle 22. In combination with this, it is further avoided that the sputter in the circumferential groove 42 is attracted to the outer peripheral side of the holding member 14 or the spatter remains on the side wall.

  When the predetermined time has elapsed, it is determined that the cleaning with the roll brush 16 has been completed. At this time, first, only the roll-type brush 16 moves backward in the direction away from the holding member 14 under the action of the first horizontal movement mechanism. The compressed air is continuously discharged and sucked until the retreat is completed.

  After the roll type brush 16 is retracted to the initial position, the supply of compressed air from the compressed air supply source is stopped. Of course, the discharge of the compressed air from the blow nozzle 22 is also terminated. Thereafter, after a predetermined time (for example, within about 5 seconds) further elapses, the suction device is de-energized and suction is stopped. Thus, by finishing the work from the upstream side in the rotation direction, it is possible to avoid as much as possible the remaining spatter that has been scraped off.

  At substantially the same time as the suction device is stopped, the blow nozzle 22 and the suction nozzle 24 are retracted in the direction away from the holding member 14 under the action of the second horizontal movement mechanism. The sequence control is completed when the blow nozzle 22 and the suction nozzle 24 are retracted to the initial positions.

  The holding member 14 cleaned as described above is returned to the cutting device and used for the next cutting. Since it is avoided that spatter remains on the side wall of the holding member 14 in contact with the inner peripheral surface of the metal workpiece, it is avoided that it is difficult to correct the metal workpiece into a substantially perfect circle shape. Further, it is possible to avoid scratches on the metal workpiece due to sputtering.

  Furthermore, since most of the spatter adhering at the previous cutting is removed, the molten material is prevented from overflowing from the circumferential groove 42 at the time of cutting by the laser beam. Therefore, it is not difficult to cut the metal workpiece.

  The present invention is not particularly limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Holding member cleaning apparatus 12 ... Rotary table 14 ... Holding member 16 ... Roll type brush 18 ... Holder 20 ... Brush type brush 22 ... Blow nozzle 24 ... Suction nozzle 30 ... Large diameter part 38 ... 1st linear groove 40 ... 2nd Linear groove 42 ... Circumferential groove 60 ... Containing recess 72 ... Hollow skirt 74 ... Suction port

Claims (6)

A straight line extending along the longitudinal direction on the side wall facing the inner peripheral surface of the metal workpiece while the metal workpiece is held and rotated by a cutting device that cuts the cylindrical metal workpiece by laser light. a holding member cleaning device for cleaning the grooves, the holding member circumferential grooves are each made plural form extending along the circumferential direction,
A rotation mechanism for rotating the holding member removed from the cutting device ;
A rotating brush inserted into the circumferential groove and the linear groove;
A suction mechanism that is disposed on the downstream side in the rotation direction of the holding member with respect to the rotary brush and performs suction;
A compressed gas supply mechanism that is located between the rotating brush and the suction mechanism and supplies compressed gas;
A straight brush that is inserted into the linear groove and travels along the linear groove;
With
A holding member cleaning device that performs insertion of the rotating brush into the circumferential groove and the linear groove, supply of the compressed gas, and suction while the holding member is rotated by the rotating mechanism.   2. The cleaning device according to claim 1, wherein the rotation mechanism rotates the holding member in the same direction as a rotation direction when the metal workpiece is cut.   3. The cleaning device according to claim 1, wherein the suction mechanism and the compressed gas supply mechanism are disposed on a diameter of the holding member. 4. The cleaning device according to claim 1, wherein the suction mechanism includes a suction nozzle extending along a longitudinal direction of the holding member, and the suction nozzle has a plurality of suction ports. The holding member cleaning apparatus characterized by the above-mentioned. The cleaning device according to claim 4 , wherein the compressed gas supply mechanism has a blow nozzle, and a phase difference between the suction nozzle and the blow nozzle is larger than a phase difference between the adjacent linear grooves. A holding member cleaning device. In the cleaning apparatus according to any one of claims 1 to 5, wherein after the straight brush is disengaged from the straight groove, the circumferential groove and the straight line of the rotary brush by rotating the holding member by the rotation mechanism A holding member cleaning device that performs insertion into a groove, supply of the compressed gas, and suction.

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