JP2013059787A - Deburring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deburring device in which lubrication between a rotary cam and a striker is carried out by utilizing oil mist discharged from an air motor.SOLUTION: A striker 57 which has a burr striking part for striking and pressing burrs from the lower side in its upper end part is provided to a base member 27A which is attachable to and detachable from a work table or a die holder in a sheet metal working machine so as to be freely vertically moved and energized downward. A polygonal rotary cam 45A rotated by an air motor 41 which is provided to the base member and functions as a rotary actuator is provided in sliding contact with the lower surface of the striker 57. A guide path 71 for guiding the oil mist which is discharged from the air motor to a housing chamber 53 in which the rotary cam is housed in order to perform the lubrication of the sliding contact part between the rotary cam and the striker, is provided to the base member. A roller 67 is provided to the lower surface of the striker by holding and supporting the roller 67 freely rotatably and the roller is brought into line contact with the outer peripheral surface of the rotary cam.

Description

  The present invention is for removing burrs generated at the inner peripheral edge of a large hole punched or punched by a plate material processing machine such as a punch press or the lower part of a processed edge such as a cut edge. The present invention relates to a burr removing device, and more particularly, to a burr removing device that removes a burr by hitting and crushing the burr with a striking element that is moved up and down at high speed.

  Conventionally, when a plate-shaped workpiece is subjected to punching, additional punching, cutting, or the like by a plate processing machine such as a punch press, a burr is generated below the processing edge of the workpiece. In order to remove the burr, burr removing apparatuses having various configurations have been developed. As an example of the burr removing device, there is a burr removing device having a structure as described in Japanese Patent Application Laid-Open No. 2006-95597.

  In the configuration described in Patent Document 1, the upper and lower molds provided for the punch press are each provided with a ball so that the ball can rotate freely, and the burrs formed on the workpiece by the upper and lower balls are sandwiched from above and below. It is the structure which moves automatically. That is, in the conventional configuration, when a burr generated in a workpiece is sandwiched between, for example, balls provided in upper and lower molds, the burr is removed (removed) by plastically deforming the burr. Therefore, the work is sandwiched between the upper and lower molds is strong, and the resistance when the work is relatively moved in the X and Y directions is large, and the work may be deformed. Therefore, there are problems such as limitations on the thickness of the workpiece and the width of the workpiece after processing.

  As a deburring device for solving the above problem, a configuration described in Patent Document 2 has been proposed.

JP 2006-95597 A JP 2011-11231 A

  The configuration of the burr removing apparatus exemplified as the second embodiment in Patent Document 2 is as shown in FIG.

  FIG. 3 illustrates a case where the burr removing device 1 is provided in a punch press as an example of a plate material processing machine. A punch press as an example of a plate material processing machine includes a punch holder (upper mold holder) 3 such as an upper turret and a die holder (lower mold holder) 5 such as a lower turret. The work pressing means 7 for pressing the upper surface in the vicinity of the processed edge WE punched or cut on the plate-like workpiece W supported so as to be movable in the X and Y axis directions on a work table (not shown). Is provided.

  The work pressing means 7 includes a lifting member 9 supported by the upper mold holder 3 so as to be movable up and down. The elevating member 9 is always urged upward by a lifter spring 11, and a head member 15 is provided at the upper end of the elevating member 9 to be pressed by a striker (ram) 13 that can be moved up and down by a punch press. The lower part of the elevating member 9 is provided with a rotary body holder 19 having a rotary member 17 such as a rotatable steel ball or roller that presses the upper surface of the workpiece W. A unit 21 is provided. The rotating body holder 19 is always pressed and urged downward by an elastic member 23 such as a coil spring provided in the pressing unit 21.

  A base 25 is provided at a position corresponding to the work pressing means 7 on the upper surface of the lower mold holder 5, and a base is provided on the base 25 via a fixture 26 such as a plurality of mounting bolts. A member 27 is detachably attached. In the tool mounting hole 29 formed in the base member 27, a burr removing unit 31 for removing a burr generated at a lower portion of the processing edge WE in the workpiece W is detachably provided.

  More specifically, a support base 33 that supports the plate-like workpiece W so as to be horizontally movable from below is detachably attached to the base member 27 via an appropriate fixing tool (not shown) such as a mounting bolt. Installed as possible. Further, the upper and lower sliders 35 provided in the tool mounting hole 29 of the base member 27 are provided with a striking element 37 having a burr hitting pressure part 37 </ b> A at the upper part, and on the upper surface of the base member 27. It is always urged downward by the urging force of the elastic member 39 elastically mounted between the attached support base 33 and the upper and lower sliders 35. In order to move the vertical slider 35 up and down, a rotary actuator 41 such as an air motor is provided in the base member 27, and is provided integrally with a rotary shaft 43 in the rotary actuator 41. The lower part of the upper and lower sliders 35 is in contact with the polygonal rotating cam 45.

  With the above configuration, when the rotary cam 41 is driven to rotate the rotary cam 45 at a high speed, the vertical slider 35 is moved up and down at a high speed by the rotation of the rotary cam 45. Accordingly, the burr hitting portion 37A of the striker 37 protrudes upward from the hole 33H of the support base 33, and the burr generated on the processing edge WE in the workpiece W is vibrated and pressed from the lower side. The removal is performed. That is, a burr formed on the upper part of the workpiece W is vibrated at a high speed and repeatedly pressed against the burr generated on the lower side of the processed part WE in the workpiece W. Is to be removed.

  That is, the burr generated on the processing edge of the work W is pressed and crushed by the striking element 37 while the work W is moved at high speed in the X and Y axis directions with respect to the position of the striking element 37. It is necessary to perform the vertical vibration of 37 at high speed. In this way, it is necessary to vibrate the burr with the striker 37 by vibrating the vertical slider 35 up and down at high speed. Therefore, it is necessary to perform lubrication in consideration of frictional heat and wear between the upper and lower sliders 35 and the rotary cam 45. Therefore, the conventional configuration is provided with separate oil supply means, and the configuration is complicated, and there is a problem that the supply of lubricating oil to the oil supply means may be forgotten, and further improvement has been desired.

  The present invention has been made in view of the above-described problems, and is a burr removing device for removing burrs generated on a lower surface of a plate-like workpiece machined by a plate material processing machine, in the plate material processing machine. A base member that can be attached to and detached from a work table or a die holder is provided with a striking element having a burr striking pressure portion at the upper end for striking the burr from the lower side, and is urged downward. To provide a polygonal rotary cam rotated by an air motor as a rotary actuator provided in the base member in sliding contact with the lower surface of the striker, and to lubricate the sliding contact portion between the rotary cam and the striker In addition, a guide path is provided for guiding oil mist exhausted from the air motor to a storage chamber in which the rotating cam is stored.

  Further, in the burr removing device, in order to lubricate the sliding contact portion between the striking member and the support base that supports the striking member so as to be movable up and down, the sliding contact portion and the storage chamber communicate with each other through a fine gap. It is characterized by that.

  In the burr removing device, a roller is rotatably held on the lower surface of the striker, and the roller and the outer peripheral surface of the rotating cam are in line contact.

  Further, in the burr removing device, the communication opening of the guide path to the accommodation chamber is provided corresponding to a region in a rotation direction in which the rotation of the outer peripheral surface of the rotating cam is directed from the lower side to the upper side. It is characterized by this.

  According to the present invention, an air motor is used as a rotary actuator for rotating a rotary cam, and oil mist is supplied to cool, lubricate, and drive the air motor. Since the oil mist exhausted from the air motor is provided with a guide path for guiding the oil mist to the storage chamber provided with the rotating cam, the exhausted oil mist stores the rotating cam when the air motor is driven to rotate. By being supplied to the chamber, the sliding contact portion between the rotating cam and the striker can be lubricated, and the conventional problems as described above can be solved.

It is sectional explanatory drawing which shows the structure of the principal part of the burr | flash removal apparatus which concerns on embodiment of this invention. It is an expanded sectional view along the II-II line in FIG. It is sectional explanatory drawing which shows the structure of the conventional burr | flash removal apparatus.

  Hereinafter, a burr removing device according to an embodiment of the present invention will be described with reference to the drawings. Since the basic configuration of the burr removing device is substantially the same as the configuration of the conventional burr removing device 1 described above, the same function is achieved. Constituent elements are given the same reference numerals, and redundant description is omitted.

  Referring to FIG. 1, a burr removing device 1 </ b> A according to an embodiment of the present invention includes a work pressing means 7 as in the conventional burr removing device 1. The base member 27 is provided with an air motor 41 as a rotary actuator. One end of a rotary shaft 47 provided with a rotary cam 45A is detachably connected to the rotary shaft 43 of the air motor 41. is there. The rotary shaft 47 is rotatably supported by a sub-base member 27A provided integrally with the base member 27 via a plurality of bearings 49 and an outer ring presser 51.

  The sub-base member 27A is integrally connected to the base member 27, so that the sub-base member 27A can be regarded as a part of the base member 27. Further, the sub base member 27 </ b> A can be provided integrally with the base member 27.

  As shown in FIG. 2, the rotating cam 45A is formed in a polygonal shape having a plurality of convex portions 45P on the outer peripheral surface. The rotating cam 45A is rotatably accommodated in an accommodating chamber 53 formed in the sub base member 27A. A cover block 55 covering the upper portion of the sub-base member 27A is integrally attached to the sub-base member 27A so as to be detachable through a plurality of fixtures (not shown) such as bolts. A striking element 57 having a burr striking pressure portion 57A at the upper part is provided at a position corresponding to the housing chamber 53 so that the cover block 55 can move up and down. The cover block 55 can be provided integrally with the base member 27, the sub base member 27A, and the like, and the cover block 55 can be regarded as a part of the base member.

  More specifically, a support base 59 that movably supports the lower surface of the workpiece W is detachably attached to a position corresponding to the storage chamber 53 via a plurality of attachments 61 such as bolts. It is. The striking element 57 is fitted in a vertically movable through hole 63 formed in the support base 59 so as to be movable up and down, and a ceiling of a large-diameter hole formed below the through hole 63 and the striking element 57. An elastic member 65 such as a coil spring is mounted between the large-diameter portion formed at the lower portion of the blade and the striker 57 is always urged downward.

  A roller 67 is rotatably provided on the lower surface of the striker 57. More specifically, a roller engaging recess 69 having an arcuate contact surface 69F corresponding to the diameter of the roller 67 is formed on the lower surface of the striker 57. The roller 67 is rotatably held in the roller engaging recess 69. That is, the upper surface of the roller 67 and the contact surface 69F of the roller engaging recess 69 are in surface contact with each other in a freely rotatable manner. The impact member 57 is urged downward by the elastic member 65, so that the roller 67 is in line contact with the outer peripheral surface of the rotating cam 45A so as to be rotatable.

  Therefore, when the roller 67 is pushed up by the convex portion 45P in the rotating cam 45A, the outer circumferential surface of the rotating cam 45A and the roller 67 can be pushed up with a greater force than in the case of point contact. Is. Further, since the roller 67 and the contact surface 69F of the roller engaging recess 69 of the striker 57 are in surface contact, the force can be efficiently transmitted from the roller 67 to the striker 57. Therefore, the burr hitting portion 57A of the striker 57 can perform the action of hitting and crushing the burr well.

  In order to rotationally drive the air motor 41, the base member 27 is provided with an air supply hole 70 for supplying compressed air to the air motor 41. In the compressed air supplied from the compressed air supply source to the air supply hole 70, lubricating oil is mixed in a mist form for cooling and lubrication, and the compressed air is supplied as oil mist. is there. Then, in order to guide the oil mist exhausted after the air motor 41 is rotationally driven to the storage chamber 53, a guide path (communication) connecting the exhaust portion (not shown) of the air motor 41 and the storage chamber 53. Hole) 71 is formed over the base member 27 and the sub-base member 27A.

  As shown in FIG. 2, the communication opening 71 </ b> A of the communication hole (guidance path) 71 is formed in the storage chamber on the region side in the rotational direction A where the outer peripheral surface of the rotating cam 45 </ b> A rotates from the lower side to the upper side. 53. A bottom cover member 73 is attached to the lower surface of the sub-base member 27A via a plurality of attachments such as bolts, and the bottom cover member 73 extends vertically corresponding to the storage chamber 53. As a result, a small hole 73H is formed.

  Accordingly, when oil mist is supplied to the air motor 41 to rotate the air motor 41 and the rotating shaft 47 connected to the rotating shaft 43 of the air motor 41 rotates at high speed, the rotating cam 45A provided on the rotating shaft 47 is provided. Is rotated at high speed in the direction of arrow A. Therefore, the striker 57 is pressed upward by the convex portion 45P of the rotating cam 45A and strikes and crushes the burr generated on the lower side of the processing edge WE of the workpiece W. That is, the striker 57 is vibrated up and down at high speed.

  As described above, the oil mist exhausted from the air motor 41 after being rotated by supplying the oil mist to the air motor 41 flows into the accommodation chamber 53 through the communication hole 71. At this time, the communication opening 71A of the communication hole 71 is connected to the side where the rotating cam 45A rotates upward, so that the oil mist flowing into the storage chamber 53 from the communication opening 71A is contained in the storage chamber 53. It will be guided to the upper side of. Therefore, the contact portion between the rotating cam 45A and the roller 67 and the contact surface between the roller 67 and the roller engaging recess 69 are effectively lubricated.

  When oil mist flows into the storage chamber 53, part of the oil mist is discharged from the small hole 73 </ b> H as the throttle hole of the bottom cover member 73, and part of the oil mist passes through the support base 59. The sliding portion between the support base 59 and the striker 57 is lubricated through the fine gap between the inner circumference of the hole 63 and the outer circumference of the striker 57. At this time, the small hole 73H of the bottom cover member 73 is formed as a throttle hole having a small diameter that does not adversely affect the rotation of the air motor 41, whereby the inner peripheral surface of the through hole 63 and the striker 57 are formed. It is possible to eject oil mist upward from a fine gap between the outer peripheral surface of the oil.

  As described above, the configuration in which oil mist is ejected upward from the fine gap can prevent the fine chips generated during the burr removal action from entering the fine gap. That is, the galling phenomenon between the striker 57 and the through hole 63 in the support base 59 can be suppressed.

  As can be understood from the above description, lubrication between the rotating cam 45A and the roller 67 and between the roller 67 and the roller engaging recess 69 of the striker 57 can be achieved with oil mist exhausted from the air motor 41. In addition to being able to be effectively used, lubrication between the through hole 63 and the striker 57 in the support base 59 can be performed, and the conventional problems as described above can be solved.

  The present invention is not limited to the above-described embodiment, and can be implemented in other forms by making appropriate changes. For example, the cover block 55, the support base 59, and the base member 27 may be integrally provided, and the sub base member 27A may be detachably provided. That is, as a configuration in which the rotary cam 45A and the striker 57 are installed, various components can be integrated or an assembly part can be formed in consideration of the entire assemblability.

DESCRIPTION OF SYMBOLS 1,1A Burr removal apparatus 7 Work holding means 27 Base member 27A Sub base member 37 Strike element 37A Burr pressure part 41 Rotary actuator (air motor)
43 Rotating shaft 45, 45A Rotating cam 45P Protruding portion 47 Rotating shaft 53 Storage chamber 57 Strike element 57A Burr hitting portion 59 Support base 63 Through hole 65 Elastic member 67 Roller 69 Roller engaging recess 69F Contact surface 71 Guide path (Communication hole) )
71A Communication opening 73 Bottom cover member 73H Small hole

Claims (4)

  A burr removing device for removing burrs generated on a lower surface of a plate-like workpiece machined by a plate material processing machine, wherein the burr is lowered on a base member detachable from a work table or a die holder in the plate material processing machine. A striking element having a burr striking part at the upper end for striking pressure from the side is provided so as to be movable up and down and urged downward, and is rotated by an air motor as a rotary actuator provided in the base member. A polygonal rotary cam is provided in sliding contact with the lower surface of the striker, and oil mist exhausted from the air motor is used to lubricate the sliding contact portion between the rotary cam and the striker. A burr removing device comprising a guide path for guiding to a stored storage chamber.   2. The burr removing device according to claim 1, wherein the sliding contact portion and the storage chamber have a fine gap in order to lubricate the sliding contact portion between the striker and the support base that supports the striker so as to move up and down. A deburring device characterized by being communicated with each other.   The burr removing device according to claim 1 or 2, wherein a roller is rotatably held on the lower surface of the striker, and the roller and the outer peripheral surface of the rotating cam are in line contact. Deburring device.   4. The burr removing device according to claim 1, wherein the communication opening of the guide path to the storage chamber is in a region in a rotational direction in which rotation of the outer peripheral surface of the rotating cam is directed from the lower side to the upper side. A deburring device characterized by being provided correspondingly.

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