JP4711832B2 - Deburring device - Google Patents

Description

  The present invention relates to a deburring device, and more particularly to a deburring device that removes a processing burr protruding in the axial direction from a side edge of each large-diameter portion of a rod-shaped workpiece having a small-diameter portion and a plurality of large-diameter portions.

  For example, a camshaft used in an engine has a rod shape in which a large-diameter cam is integrally formed with a small-diameter shaft portion, and the cam surface, which is the outer peripheral surface of each cam, is ground. As the cam surface is ground, a processing burr that protrudes in the axial direction is generated at the side edge in the axial direction of the cam surface.

  For example, Patent Document 1 is known as a deburring device for removing the processing burr. FIG. 9 is a diagram showing an outline of the deburring device. The deburring device holds a columnar workpiece 100 having a plurality of grooves 100b formed on the outer peripheral surface 100a, and rotates around its axis L1. A workpiece holding portion 101 to be held, a pair of cup-type brushes 102 disposed opposite to each other at a position sandwiching the workpiece held by the workpiece holding portion 101, and a pair of cup-type brushes 102 respectively held in the forward and reverse directions. A brush rotation driving unit 103 that rotates and rotates, a first table unit 104 that reciprocates the cup-type brush 102 in a direction in which the cup-type brush 102 contacts and separates from the workpiece 100, and the cup-type brush 102 relatively moves in the axial direction of the workpiece 100. And a second table unit 105.

  Then, the workpiece 100 held by the workpiece holding unit 101 is rotated, and the countless wire 102a provided on the rotating cup-type brush 102 is brought into contact with the workpiece 100, and is generated at the edge portion of the groove 100b of the workpiece 100. Remove the burr from the root.

  Further, as shown in FIG. 10, a work holding means 111 that holds and rotates a camshaft 110 that is a rod-like work, and a side edge of each cam 110a of the camshaft 110 that is rotationally driven by the work holding means 111, respectively. There is known a deburring device including a plurality of deburring means 112 that presses a blade tool 113 with an actuator 114 to remove deburring (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 5-57586 JP 2004-202626 A

  According to the deburring device of Patent Document 1, there is a concern that the outer peripheral surface 100a that has already been ground is rubbed by the wire material 102a of the cup-type brush 102 and the outer peripheral surface 100a is damaged when deburring. If the wire 102a is made of a soft synthetic resin material such as nylon in order to prevent this damage, the burr is bent and it is difficult to remove it sufficiently. On the other hand, if the wire 102a is made of a material having rigidity, the outer peripheral surface 100a may be damaged.

  Further, according to Patent Document 2, burrs can be removed without causing damage to the cam surface by pressing the blade tool 113 against the side edge of the cam 110a of the rotating camshaft 110.

  However, since each deburring means 112 requires an actuator 114 for pressing the cutting tool 113 against the side edge of the cam 110a, the arrangement of the plurality of actuators 114 complicates the configuration of the deburring device, and deburring is performed. There is concern about an increase in manufacturing cost and maintenance cost of the apparatus.

  Therefore, an object of the present invention made in view of such a point is that it is possible to reliably remove burrs without causing damage to the workpiece, simplify the configuration, and expect reduction in manufacturing cost and maintenance cost. The object is to provide a deburring device.

An invention of a deburring device that achieves the above object is a deburring device that removes a processing burr protruding from a side edge of each large-diameter portion of a rod-shaped workpiece having a small-diameter portion and a plurality of large-diameter portions. Holding and rotating around the axis of the rod-shaped workpiece, and an arm support portion disposed corresponding to each large-diameter portion of the rod-shaped workpiece rotated by the workpiece holding means, which can be freely opened and closed. A pair of arms that are pivotally supported and each provided with a deburring tip at each tip and a biasing means that biases the arms in the closing operation direction. A deburring mechanism that presses the deburring tip against both side edges of each large-diameter portion and each deburring tip separates from the side edge at the open position of the arm, a reciprocating member, and a deburring machine for the reciprocating member. A deburring mechanism drive unit having a deburring mechanism driving actuator that reciprocates between an open position and a deburring mechanism closed position, and the reciprocating member and the deburring mechanism, respectively. The reciprocating motion is converted into an opening / closing operation of each arm of each deburring mechanism in conjunction with the reciprocating motion, and the reciprocating member holds the arm in the open position in the deburring mechanism open position and in the deburring mechanism closed position. Each arm of the deburring mechanism is pivotally supported by the arm support portion so as to be openable and closable by the arm support portion. The base end portion is formed with cam sliding contact surfaces that protrude from the center portion toward the work holding means side and protrude from the center portion to the side away from the work holding means and that face each other. The reciprocating member is provided with a plurality of cam followers corresponding to each deburring mechanism, and the conversion mechanism includes a camshaft rotatably supported corresponding to each deburring mechanism and a camshaft. A link extending in the radial direction and formed with a locking portion that fits into the cam follower, and a cam that is coaxially formed on the cam shaft and inserted between the opposing cam sliding surfaces, As the cam follower moves as the moving member moves from the deburring mechanism closed position to the deburring mechanism open position, the cam rotates to the open position and widens the opposing cam sliding contact surfaces to bring the arms to the open position. The cam is rotated to the closed position by the movement of the cam follower accompanying the movement of the reciprocating member from the deburring mechanism open position to the deburring mechanism closed position to release the holding position of the arm. And

According to a second aspect of the present invention, in the deburring device according to the first aspect , each of the deburring mechanism, the deburring mechanism driving unit, and the conversion mechanism includes a deburring work position approaching the work holding means and a work holding means. It is provided in a base portion that moves between a retreat position and a retreating position, and the reciprocating member rotates at the retraction position from the deburring mechanism open position to the deburring mechanism closed position, and the cam is rotated to the closed position. When the arm is released from holding the open position, the urging means urges each arm to the closed position where the deburring tips come into contact with each other or close to each other, and detects the arm closed position. Means are provided.

According to a third aspect of the present invention, in the deburring apparatus according to the first aspect , each of the deburring mechanism, the deburring mechanism driving unit, and the conversion mechanism is deburred away from the deburring work position approaching the work holding means and the work holding means. Provided at a base portion that moves between the position and the reciprocating member at the retracted position, the cam is rotated from the deburring mechanism open position to the deburring mechanism closed position to rotate the cam to the closed position. An air blower that urges each arm to a closed position where the deburring tips come into contact with each other or close to each other and releases air to the deburring tip in the closed position when releasing the holding of the open position; It is characterized by having.

According to a fourth aspect of the present invention, in the deburring device according to any one of the first to third aspects, each of the arms is pivotally supported by the arm support portion via a sleeve, and the pivotal support portion. A shaft seal means for covering the minute portion so as to allow the arm to rotate is provided.

  According to the first aspect of the present invention, the deburring mechanism is arranged corresponding to each large-diameter portion of the rod-shaped work rotated by the work holding means, and the reciprocating member is moved to the deburring mechanism open position by the deburring mechanism driving actuator. The deburring mechanism is reciprocated to the closed position, and each arm of each deburring mechanism is held in the open position or the arm is held in the open position via each conversion mechanism disposed between the reciprocating member and each deburring mechanism. By releasing, deburring by a plurality of deburring mechanisms can be performed by a single actuator for driving the deburring mechanism. Therefore, the structure of the deburring device can be simplified, and the manufacturing cost and maintenance cost of the deburring device can be suppressed. In addition, since the deburring tip is pressed against the side edge of the large-diameter portion of the rod-shaped workpiece, the processing burr can be scraped off from its root and the processing burr can be completely removed from the side edge of the large-diameter portion. Further, the deburring tip does not come into contact with the outer peripheral surface of the large diameter portion, and damage to the outer peripheral surface of the large diameter portion due to the deburring operation can be prevented.

In addition, each arm of the deburring mechanism is pivotally supported so that the central portion intersects the arm support portion so that it can be freely opened and closed, a deburring tip is provided at the distal end portion, and a cam sliding contact surface facing the proximal end side is formed, The cam that rotates to the open position by the movement of the cam follower accompanying the movement of the reciprocating member from the deburring mechanism closed position to the deburring mechanism open position spreads the opposing cam sliding contact surface and holds the arm in the open position. The reciprocating member has a simple structure in which the cam is rotated to the closed position by the movement of the cam follower accompanying the movement of the deburring mechanism from the open position to the closed position and the arm is held open by the cam. can do.

According to the second aspect of the present invention, when the holding position of the arm is released by the rotation of the cam accompanying the movement of the reciprocating member from the open position of the deburring mechanism to the closed position of the deburring mechanism in the retracted position, Each arm is urged to the closed position, and the closing operation of each deburring mechanism is confirmed by detecting the closed position of the arm by the arm closing operation confirmation means. At this time, if the closing position of the arc is not confirmed in any of the arm closing operation confirmation means, it is confirmed that a failure has occurred due to damage to the urging means of the corresponding deburring mechanism or biting of chips, etc. it can.

According to the invention of claim 3 , by removing foreign matters such as chips adhering to the deburring chip by air blow that blows air by an air blowing device to the deburring chip in the closed position in contact with or close to each other in the retracted position, It is possible to prevent the bar-shaped workpiece from being damaged due to chips adhering to the deburring tip.

According to the invention of claim 4 , each arm of the deburring mechanism is pivotally supported by the arm support portion via the sleeve so as to be rotatable, and the shaft seal means for covering the pivotally supported portion so that the arm can be rotated. As a result, it is possible to ensure smooth operation of the deburring mechanism without cutting chips or the like entering the shaft support portion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking as an example the case where the rod-shaped workpiece is a camshaft used in an engine.

  FIG. 1 is an overall plan view of a deburring device 1 according to the present embodiment, and FIG. 2 is a cross-sectional view taken along the line II of FIG.

  As shown in FIG. 1, a camshaft 90 serving as a rod-shaped workpiece includes a rod-shaped shaft portion 91 serving as a small-diameter portion, and a plurality of cams serving as large-diameter portions arranged at intervals from the shaft portion 91. In the embodiment, four cams 92 are integrally formed, and center holes 91 a and 91 b are formed at each end of the shaft portion 91. The cam surface 93 that is the outer peripheral surface of each cam 92 of the camshaft 90 is ground. However, a machining burr that protrudes in the axial direction is generated on the side edges 93a and 93b in the axial direction of the cam surface 93 along with the grinding process.

  As shown in FIG. 1, the deburring device 1 includes a work holding means 10 that holds a camshaft 90 and rotates it around its axis, and a deburring mechanism section 20 that is disposed adjacent to the work holding means 10. is doing.

  The work holding means 10 includes a head stock 11 and a tail stock 13, a rotation center 12 is provided on the head stock 11, and a centering center 14 is provided on the tail stock 13. The rotation center 12 and the centering center 14 are disposed on the same rotation axis L, move closer to each other by the forward movement of the head stock 11 and the tail stock 13, and fit into the center holes 91a and 91b of the camshaft 90, respectively. As a result, the camshaft 90 is rotatably held. The camshaft 90 rotates about the rotation axis L by rotating the rotation center 12 by a rotation driving means such as an electric motor (not shown). The work holding means 10 includes a rotation control means 15 that controls the rotation speed and rotation angle of the rotation center 12.

  The deburring mechanism 20 has a base portion 21 that is substantially rectangular in plan view and is disposed adjacent to the work holding means 10, and is in contact with the work holding means 10 on the base portion 21 so as to be orthogonal to the rotation axis L in plan view. A pair of guide rails 22 extending in a separating direction are provided, and a deburring unit 30 is movably supported by a slider 23 that moves on the guide rails 22.

  The deburring unit 30 is guided by the guide rail 22 by the extension of the unit hydraulic cylinder mechanism 25 serving as a unit back-and-forth movement actuator attached to the base portion 21 and comes into contact with the forward end stopper 26 provided on the base portion 21. The forward movement end where the movement is restricted is moved forward, and the unit hydraulic cylinder mechanism 25 contracts and is guided by the guide rail 22 to move backward to the backward movement end. The forward movement end is the deburring work position of the deburring unit 30, and the backward movement end is the retracting position of the deburring unit 30. Further, a deburring unit position detecting means 27 for detecting the deburring unit 30 at the forward movement end and the backward movement end is provided. The deburring unit position detecting means 27 is a unit advance operation confirmation switch 27b comprising a dog 27a disposed in the deburring unit 30, and a proximity switch for detecting the dog 27a at the forward movement end of the deburring unit 30 on the base portion 21. And a unit reverse operation confirmation switch 27c comprising a proximity switch for detecting the dog 27a at the reverse movement end of the deburring unit 30, and the dog 27a is moved by the unit forward operation confirmation switch 27b and the unit reverse operation confirmation switch 27c. By detecting, the deburring unit 30 at the forward movement end and the backward movement end can be confirmed.

  The deburring unit 30 has a plate-like base 31 extending along a direction orthogonal to the planar guide rail 22 with the slider 23 attached to the lower surface, that is, along the extending direction of the rotation axis L. Four deburring mechanisms 41-1 to 41-4 disposed along the front end edge of the base 31 corresponding to the cams 92 of the camshaft 90 held by the headstock 11 and the tailstock 13, respectively. Deburring mechanism driving unit 61 and conversion mechanisms 71-1 to 71-4 for opening and closing each deburring mechanism 41-1 to 41-4 by converting the reciprocating motion of deburring mechanism driving unit 61 into a rotational motion. is doing.

  The deburring mechanism 41-1 will be described with reference to FIGS. 3 is an enlarged view of a portion A in FIG. 1, FIG. 4 is a sectional view taken along the line II-II in FIG. 3, and FIG.

  The deburring mechanism 41-1 is a pair of arms in which the central portions 45 </ b> A and 46 </ b> A are pivotally supported by a columnar arm support portion 42 erected on the base portion 31 so as to rotate in a plan view. One arm 45 and a second arm 46 are provided.

  A shaft support structure that rotatably supports the central portions 45A and 46A of the first arm 45 and the second arm 46 on the arm support portion 42 will be described with reference to FIG. The arm support portion 42 that pivotally supports the first arm 45 and the second arm 46 is provided with a foreign matter intrusion prevention ring mounting portion at the upper end of a relatively large diameter cylindrical shaft body 42A attached to the base portion 31. A relatively small-diameter shaft portion 42C is continuously and integrally formed through a cylindrical step portion 42B, and a screw hole 42Cb is formed in a top end 42Ca of the shaft portion 42C.

  On the other hand, a shaft hole 46Aa is formed in the central portion 46A of the second arm 46, and a foreign substance enters the lower surface of the second arm 46 along the shaft hole 46Aa and continues to the outer periphery of the ring insertion groove 46a. A seal mounting groove 46b serving as a prevention seal mounting portion is formed, and an annular ring mounting groove 46c serving as a foreign matter intrusion prevention ring mounting portion is formed on the upper surface of the second arm 46 along the shaft hole 46Aa. Similarly, a shaft hole 45Aa is formed in the central portion 45A of the first arm 45, and an annular ring insertion groove 45a and an outer periphery of the ring insertion groove 45a are continuously sealed along the shaft hole 45Aa on the lower surface of the first arm 45. A mounting groove 45b is formed, and an annular ring mounting groove 45c is formed on the upper surface of the first arm 45 along the shaft hole 45Aa. Also, a disc-shaped arm holder having a bolt insertion hole 47a formed in the center and a ring insertion groove 47b formed on the lower surface along the bolt insertion hole 47a and a seal mounting groove 47c continuous to the outer periphery of the ring insertion groove 47b is formed on the lower surface. A member 47 is provided. Foreign matter formed in a cylindrical shape by fitting the inner periphery of the base end to each of the ring mounting grooves 46c and 45c of the step portion 42B, the second arm 46, and the first arm 45 of the arm support portion 42 thus formed. An intrusion prevention ring 48a, 48b, 48c is mounted, and the outer periphery is fitted into each of the seal mounting grooves 46b, 45b, 47c of the second arm 46, the first arm 45, and the arm holding member 47, and an annular foreign matter intrusion prevention seal 49a , 49b, 49c and an annular spacer 50 on the upper surface of the second arm 46 for preparation.

  Then, the foreign matter intrusion prevention ring 48a is fitted into the shaft portion 42C of the arm support portion 42 attached to the step portion 42B with the flanged sleeve 51a through the shaft hole 46Aa of the second arm 46, and the step portion 42B. The second arm 46 is attached to the shaft portion 42C so that the tip of the foreign matter intrusion prevention ring 48a attached to the inner surface of the foreign matter intrusion prevention seal 49a is inserted into the ring insertion groove 46a. In a state of being superimposed on the spacer 50 attached to the second arm 46, the shaft hole 45Aa of the first arm 45 is fitted to the shaft portion 42C via the flanged sleeve 51b, and the ring of the second arm 46 is fitted. The first arm 45 is attached to the shaft portion 42C so that the tip of the foreign matter intrusion prevention ring 48b attached to the attachment groove 46c is inserted into the ring insertion groove 45a and fits into the inner surface of the foreign matter intrusion prevention seal 49b. Further, the tip of the foreign matter intrusion prevention ring 48c attached to the ring attachment groove 45c of the first arm 45 is inserted into the ring insertion groove 47b and fitted into the inner surface of the foreign matter intrusion prevention seal 49c, so that the arm holding member 47 is pivoted. The arm holding member 47 is fixed to the shaft portion 42C by the mounting bolt 52 that is positioned and overlapped with the top end 42Ca of the portion 42C, inserted through the bolt insertion hole 47a, and screwed into the screw hole 42Cb.

  As a result, the center portions 46A and 45A of the second arm 46 and the first arm 45 intersect with each other in plan view with the flange portions 51a and 51b interposed in the shaft portion 42C of the arm support portion 42 so as to be pivotally supported. Is done. Furthermore, a foreign matter intrusion prevention ring 48a attached to the step portion 42B of the arm support portion 42 that is in sliding contact with each other, a foreign matter intrusion prevention seal 49a attached to the second arm 46, and a foreign matter intrusion prevention ring 48b attached to the second arm 46. And the foreign matter intrusion prevention seal 49b attached to the first arm 45, the foreign matter intrusion prevention ring 48c attached to the first arm 45, and the foreign matter intrusion prevention seal 49c attached to the arm holding member 47. Shaft seal means for covering a shaft support portion that pivotally supports the second arm 46 and the first arm 45 via flanged sleeves 51a and 51b is formed in the portion 42C. Therefore, the sealing means prevents foreign matter such as chips from entering the shaft support portion, and ensures smooth swinging of the first arm 45 and the second arm 46.

  The center portions 45A and 46A are deburred at substantially the same height as the tip portions 45B and 46B of the first arm 45 and the second arm 46 that are pivotally supported by the arm shaft support portion 42 and project toward the work holding means 10 side. 53A and 53B are attached. The deburring chips 53A and 53B are formed with blade portions 53Aa and 53Ba that face each other and move away from each other as they move to the tip side.

  On the other hand, on the side of the first arm 45 and the second arm 46 that are separated from the work holding means 10, there are planar cam slide contact surfaces 45D and 46D that face the base end portions 45C and 46C protruding from the central portions 45A and 46A. Spring support portions 45E and 46E that are formed and extend so as to be separated from each other continuously from the cam sliding contact surfaces 45D and 46D are formed. Each of the spring support portions 45E and 46E is formed with a plurality of spring post fixing holes 45Ea to 45Ec and 46Ea to 46Ec arranged in a direction away from each other in the present embodiment. Further, a dog portion 45 </ b> F is extended at the proximal end of the first arm 45.

  Spring posts 54a and 54b, which are locking portions, are penetrated and supported by spring post fixing holes 45Ea and 46Ea of the spring support portions 45E and 46E, respectively, and protrude from the spring post fixing holes 45Ea and 46Ea. The tension coil springs 56a and 56b serving as urging means are stretched between the upper and lower portions of the spring posts 54a and 54b. Deburring tips 53A disposed at the distal ends 45B and 46B of the first arm 45 and the second arm 46 are urged in the closing operation direction in which the base ends 45C and 46C approach each other by the tension of the tension coil springs 56a and 56b. , 53B are always urged in the closing operation direction in contact with or close to each other.

  Since the other deburring mechanisms 41-2 to 41-4 are configured in the same manner as the deburring mechanism 41-1, the same reference numerals are given to the same elements, and descriptions thereof are omitted.

  The deburring mechanism driving unit 61 is shown in FIG. 1 and FIG. 2 and as viewed in the direction of the arrow B in FIG. 1 in which the deburring mechanisms 41-1 to 41-4 and the conversion mechanisms 71-1 to 71-4 are omitted in FIG. As shown, a deburring mechanism hydraulic cylinder mechanism 62 which is an actuator for driving a deburring mechanism disposed on the base 31 in parallel with the rotation axis L, and a guide rail extending on the base 31 in parallel with the rotation axis L. 63, and a slide plate 65, which is a rod-like reciprocating member that is moved and guided along the guide rail 63 in parallel with the rotation axis L by a plurality of slide guides 64 provided on the base 31. A cylindrical cam follower 6 that is rotatably supported on the lower surface by a shaft extending in the vertical direction corresponding to each deburring mechanism 41-1 to 41-4 and whose lower end is slidably contacted with the upper surface of the guide rail 63. -1～66-4 is provided. The base end of the slide plate 65 is coupled to the deburring mechanism hydraulic cylinder mechanism 62, and the deburring mechanism hydraulic cylinder mechanism 62 extends to move the slide plate 65 forward to the deburring mechanism open position indicated by a virtual line 65a. The retracting operation moves backward to the deburring mechanism closed position indicated by the solid line.

  Further, a deburring mechanism opening / closing operation detecting means 67 for detecting the slide plate 65 at the deburring mechanism open position and the deburring mechanism closed position is provided. The deburring mechanism opening / closing operation detecting means 67 includes a dog 67a disposed at the base end of the slide plate 65, and a proximity switch disposed on the base 31 for detecting the dog 67a at the deburring mechanism open position of the slide plate 65. A deburring mechanism opening operation confirmation switch 67b and a deburring mechanism closing operation confirmation switch 67c including a proximity switch for detecting a dog 67a at the deburring mechanism closed position of the slide plate 65 are provided. By detecting the dog 67a by the switch 67b and the deburring mechanism closing operation confirmation switch 67c, the slide plate 65 in the deburring mechanism open position and the deburring mechanism closed position can be confirmed.

  Next, the conversion mechanism 71-1 will be described with reference to FIGS. 1, 2, 3, and 5. Since the other conversion mechanisms 71-2 to 71-4 are configured in the same manner as the conversion mechanism 71-1, the description thereof is omitted.

  The conversion mechanism 71-1 includes a cam shaft 72 pivotally supported in a shaft hole 63a having a central axis extending in the vertical direction formed on the guide rail 63 corresponding to the deburring mechanism 41-1. Have.

  The cam shaft 72 is a cylindrical cam shaft main body 73 having a relatively large diameter, and a shaft that is coaxially projected downward from the lower surface of the cam shaft main body 73 and is fitted into the shaft hole 63a to be rotatably supported. The section 74 and the camshaft main body 73 are coaxially projecting upward from the upper surface, and the cross-sectional shape is flat. Between the first and second arm 45 and 46D of the deburring mechanism 41-1, the cam sliding contact surfaces 45D and 46D. A cam 75 that can be slidably contacted with the cam sliding contact surfaces 45D and 46D by inserting the respective side end portions 75a and 75b, and a cam shaft main body 73 having a proximal end coupled to the cam shaft main body 73 in a radial direction. A link 76 formed with a slit-like engagement groove 77 is integrally formed as a locking portion that extends in the direction and is slidably fitted to the cam follower 66-1 provided on the slide plate 65 at the tip. ing.

  As the cam follower 66-1 moves from the deburring mechanism closed position of the slide plate 65 to the deburring mechanism open position, the link 76 is moved by moving the cam follower 66-1 from the closed position shown by a solid line in FIG. Swings from the closed position indicated by the solid line to the open position indicated by the phantom line 76a to rotate the cam shaft 72, while the side ends 75a and 75b of the cam 75 are in sliding contact with the cam sliding contact surfaces 45D and 46D. The cam slide contact surfaces 45D and 46D are rotated to the open position against the biasing force of the tension coil springs 56a and 56b by rotating from the closed position indicated by the solid line to the open position indicated by the phantom line, and the first arm 45 and The second arm 46 rotates to hold the deburring chips 53A and 53B provided at the tip portions 45B and 46B in the open position where they are separated from the closed position. On the other hand, the link 76 is indicated by the solid line from the open position indicated by the phantom line 76a by the movement of the cam follower 66-1 from the open position to the closed position accompanying the movement of the slide plate 65 from the deburring mechanism open position to the deburring mechanism closed position. The cam shaft 72 is rotated by swinging to the closed position, and the cam 75 is rotated from the open position indicated by the phantom line to the closed position indicated by the solid line in FIG. 3, and the cam sliding contact surface 45D by the side end portions 75a and 75b. , 46D is released, the first arm 45 and the second arm 46 are released from the open position, and the base end portions 45C, 46C are urged in the closing operation direction by the urging force of the tension coil springs 56a, 56b. The first arm 45 and the second arm 46 are rotated, and the deburring chips 53A and 53B provided at the tip portions 45B and 46B are rotated from the open position to the closed position.

  Further, the base portion 31 is provided with an arm closing operation confirmation means 78-1 including an arm closing operation confirmation switch 78a including a proximity switch for detecting the closing position of the dog portion 45F formed on the first arm 45.

  The deburring unit 30 configured as described above excludes the first arm 45 and the distal end portions 45B and 46B of the second arm 46 of the deburring mechanisms 41-1 to 41-4 provided with the deburring chips 53A and 53B. Covered with a cover 80. Further, the deburring chips 53A and 53B provided at the tip portions 45B and 46B of the first arm 45 and the second arm 46 of each of the deburring mechanisms 41-1 to 41-4 protruding from the cover 80 are supplied from the air supply source 83. A nozzle 82 of an air blowing device 81 for removing chips and the like adhering to the deburring chips 53A and 53B by blowing the air is disposed.

  Further, a camshaft 90 (not shown) to be deburred is carried between the head stock 11 and the tail stock 13 of the work holding means 10 and the camshaft 90 deburred from between the head stock 11 and the tail stock 13 is deburred. The apparatus includes a work loading / unloading device that is unloaded from the deburring device 1, and further includes a control unit that controls the operation of each unit of the deburring device 1 according to a preset program.

  Next, the operation of the deburring device 1 configured as described above will be described with reference to the flowchart shown in FIG.

  In the state where the unit hydraulic cylinder mechanism 25 of the deburring mechanism section 20 is contracted and the deburring unit 30 is maintained at the backward movement end, the camshaft 90 to be deburred by the work loading / unloading device is attached to the work holding means 10. It is carried and held between the rotation center 12 provided in the head stock 11 and the centering center 14 of the tail stock 13 and coaxially with the rotation axis L (step S1).

  Next, the head stock 11 and the tail stock 13 are moved forward so that the rotation center 12 and the centering center 14 are fitted into the center holes 91a and 91b of the camshaft 90, so that the camshaft 90 and the rotation center 12 and the centering center are fitted. 14, the camshaft 90 is fixed to the work holding means 10. After the camshaft 90 is fixed to the workpiece holding means 10, the workpiece loading / unloading device is retracted from between the head stock 11 and the tail stock 13 (step S2).

  The deburring mechanism hydraulic cylinder mechanism of the deburring mechanism driving unit 61 is contracted to move the slide plate 65 backward from the deburring mechanism open position to the deburring mechanism closed position. As the slide plate 65 moves backward, the cam followers 66-1 to 66-4 move from the open position to the closed position, and the conversion mechanisms engage the engagement grooves 77 with the cam followers 66-1 to 66-4. The links 76 of 71-1 to 71-4 rotate from the open position to the closed position. As the links 76 rotate, the cams 75 rotate from the open position to the closed position, and the first and second arms 45 of the deburring mechanisms 41-1 to 41-4 by the side end portions 75a and 75b. 46 is released from the cam sliding contact surfaces 45D and 46D. Then, the first arm 45 and the second arm 46 released from the open position are rotated by the urging force of the tension coil springs 56a and 56b until the deburring tips 53A and 53B provided on the tip portions 45B and 46B rotate to the closed position. Move. At this time, when the first arm 45 of each of the deburring mechanisms 41-1 to 41-4 rotates to the closed position and the dog portion 45F moves to the closed position, each arm closing operation confirmation means 78-1 to 78-78. -4 arm closing operation confirmation switch 78a detects the dog portion 45F, and the deburring mechanisms 41-1 to 41-4 are confirmed to be closed (step S3).

  The deburring mechanism hydraulic cylinder mechanism 62 is contracted to move the slide plate 65 backward to the deburring mechanism closed position, and the deburring mechanism closing operation confirmation switch 67c of the deburring mechanism opening / closing operation detecting unit 67 is used to slide the slide plate 65. If the closing movement is not confirmed in any of the arm closing operation confirmation means 78-1 to 78-4 even if the 65 backward movement is confirmed, the tension coil spring 56a of the corresponding deburring mechanism 41-1 to 41-4. , 56b, etc., abnormalities such as occurrence of defects due to biting of chips, etc. can be confirmed.

  When the closing operation of each deburring mechanism 41-1 to 41-4 is confirmed by each arm closing operation confirming means 78-1 to 78-4 in step S3, from each nozzle 82 of the air blowing device 81 following the confirmation. Air is blown to the deburring chips 53A and 53B of the deburring mechanisms 41-1 to 41-4 in the closed state, and foreign matters such as chips adhering to the deburring chips 53A and 53B are removed by this air blow. (Step S4).

  In step S4, air is blown to remove foreign matters such as chips adhering to the deburring chips 53A and 53B, and then the deburring mechanism hydraulic cylinder mechanism 62 of the deburring mechanism driving unit 61 is extended to operate the slide plate 65. Move forward from the deburring mechanism closed position to the deburring mechanism open position. As the slide plate 65 moves forward, the cam followers 66-1 to 66-4 move from the closed position to the open position, and each conversion mechanism in which the engagement groove 77 engages with each cam follower 66-1 to 66-4. The links 76 of 71-1 to 71-4 rotate from the closed position to the open position. By rotation of each link 76, the side end portions 75a and 75b of each cam 75 cause the cam sliding contact surfaces 45D and 46D of the first and second arms 45 and 46 of the respective deburring mechanisms 41-1 to 41-4. It rotates from the closed position to the open position while sliding. Then, the cam sliding contact surfaces 45D and 46D are expanded to the open position against the urging force of the tension coil springs 56a and 56b, and the first arm 45 and the second arm 46 of each deburring mechanism 41-1 to 41-4. And the deburring chips 53A and 53B provided at the tip portions 45B and 46B are held at the open position where they are separated from the closed position to the open position (step S5).

  Subsequently, the deburring unit 30 is guided by the extension operation of the unit hydraulic cylinder mechanism 25 in a state where the first arm 45 and the second arm 46 of each of the deburring mechanisms 41-1 to 41-4 are held in the open position. It moves forward to the forward movement end that is guided by the rail 22 and abuts against the forward end stopper 26 provided on the base portion 21 to restrict movement (step S6).

  The movement of the deburring unit 30 to the forward movement end can be confirmed by detecting the dog 27a provided in the deburring unit 30 by the unit advance operation confirmation switch 27b of the deburring unit position detecting means 27. Further, at the forward movement end of the deburring unit 30, the deburring tips 53A provided at the front end portions 45B and 46B of the first arm 45 and the second arm 46 of the deburring mechanisms 41-1 to 41-4. More specifically, the cams 92 of the camshaft 90 held by the work holding means 10 are located between the blade portion 53Aa of the deburring tip 53A and the blade portion 53Ba of the deburring tip 53B with a gap between them. is doing.

  With the deburring unit 30 held at the forward movement end, the deburring mechanism hydraulic cylinder mechanism 62 of the deburring mechanism driving unit 61 is contracted to move the slide plate 65 from the deburring mechanism open position to the deburring mechanism closed position. Move backward toward. As the slide plate 65 moves backward, the cam followers 66-1 to 66-4 shift from the open position to the closed position, and the conversion mechanisms in which the engagement grooves 77 engage with the cam followers 66-1 to 66-4. The links 76 of 71-1 to 71-4 rotate from the open position to the closed position. The cam shaft 72 is rotated by the rotation of the links 76, the cams 75 are rotated from the open position toward the closed position, and the deburring mechanisms 41-1 to 41- by the side end portions 75a and 75b. The pushing movement of the first and second arms 45, 46 on the cam sliding contact surfaces 45D, 46D is released. The first arm 45 and the second arm 46 released from holding the open position by the cams 75 are rotated around the shaft portion 42C of the arm support portion 42 by the urging force of the tension coil springs 56a and 56b, and are closed. The deburring tips 53A and 53B provided at the tip portions 45B and 46B are pressed against the side edges 93a and 93b of the cam surfaces 93 with a pressing force corresponding to the urging force of the tension coil springs 56a and 56b, respectively. The rotation of the first arm 45 and the second arm 46 is stopped in a state where 93 is sandwiched from both sides (step S7).

  FIG. 8 is an enlarged view of a main part for explaining the pressing state of the deburring tips 53A and 53B against the side edges 93a and 93b of the cam surface 93. The blade portions 53Aa and 53Ba of the deburring tips 53A and 53B are mutually connected. As they move from the proximal end side to the distal end side, they gradually move away from each other and are pressed against the side edge 93a, 93b of the cam surface 93 in a slightly inclined posture with respect to the side end surface 94 of the cam 92. The blade parts 53Aa and 53Ba are pressed against only the corner part 93b.

  The rotation center 12 of the headstock 11 is set in advance in a state where the blade 53A of the deburring tip 53A and the blade 53Ba of the deburring tip 53B are in contact with the side edges 93a and 93b of the cam surfaces 93, respectively. Rotation speed and rotation angle optimum for deburring, for example, 720 ° at 30 rpm, that is, 2 rotations. The camshaft 90 is rotated by the rotational drive of the rotation center 12, and the edge portions 93a and 93b of the deburring chips 53A and 53B pressed against the side edges 93a and 93b of the cam surfaces 93 are moved to the side edges 93a and 93b. The generated processing burr 95 is scraped off from the root, and the processing burr 95 can be removed from the side edges 93a and 93b of the cam surface 93 (step S8). In this deburring, the blade portions 53Aa and 53Ba of the deburring tips 53A and 53B are in contact with only the side end edges 93a and 93b, and the cam surface 93 and the side end surface 94 are scratched by rubbing of the deburring tips 53A and 53B. Can be avoided.

  After the rotation of the rotation center 12 is stopped and the deburring is completed, the deburring mechanism hydraulic cylinder mechanism 62 of the deburring mechanism driving unit 61 is extended to open the deburring mechanism from the deburring mechanism closed position. Move forward to position. As the slide plate 65 moves forward, the cam followers 66-1 to 66-4 move from the closed position to the open position, and each conversion mechanism in which the engagement groove 77 engages with each cam follower 66-1 to 66-4. The links 76 of 71-1 to 71-4 rotate from the closed position to the open position. By rotation of each link 76, the side end portions 75a and 75b of each cam 75 cause the cam sliding contact surfaces 45D and 46D of the first and second arms 45 and 46 of the respective deburring mechanisms 41-1 to 41-4. The cam sliding contact surfaces 45D and 46D are pushed to the open position against the urging force of the tension coil springs 56a and 56b and held at the open position. As a result, the first arm 45 and the second arm 46 of each of the deburring mechanisms 41-1 to 41-4 rotate, and the respective deburring chips 53A and 53B provided at the tip portions 45B and 46B move to the open position. Then, the blade parts 53Aa and 53Ba of the deburring chips 53A and 53B are separated from the side edges 93a and 93b of the cam surface 93 of the camshaft 90 from which the burrs are removed (step S9).

  The deburring unit 30 is moved to the guide rail 22 by the contraction operation of the unit hydraulic cylinder mechanism 25 in a state where the first arm 45 and the second arm 46 of the deburring mechanisms 41-1 to 41-4 are maintained in the open positions. Guided and moved backward to the backward movement end (step S10). The movement of the deburring unit 30 to the backward movement end can be confirmed by detecting the dog 27a provided in the deburring unit 30 by the unit reverse operation confirmation switch 27c of the deburring unit position detecting means 27.

  With the work loading / unloading device inserted between the head stock 11 and the tail stock 13 and the camshaft 90 supported by the rotation center 12 and the centering center 14 being supported, the head stock 11 and the tail stock 13 are moved backward. Then, the rotation center 12 and the centering center 14 are extracted from the center holes 91a and 91b of the camshaft 90, and the holding of the camshaft 90 by the work holding means 10 is released, that is, unchucked (step S11).

  The work loading / unloading device is retracted from between the head stock 11 and the tail stock 13, and the camshaft 90 from which burrs have been removed is unloaded from the deburring device 1 (step 12).

  The camshaft 90 to be deburred by the workpiece loading / unloading device is loaded into the headstock 11 and the tailstock 13 of the deburring device 1 from step S1, and the deburred camshaft 90 is loaded into the workpiece. By repeating each step of step S12 which is carried out from the deburring device 1 to the outside by the carry-out device, the processing burr 95 generated at the side edges 93a and 93b of the cam surface 93 of the camshaft 90 can be removed from the root. it can. The spring posts 54a and 54b are appropriately inserted and fixed in the other spring post fixing holes 45Eb and 45Ec, 46Eb and 46Bc, etc., so that the urging force by the tension coil springs 56a and 56b, that is, the deburring chips 53A and 53B are cam surfaces 93. The pressing force that presses against the side end edges 93a and 93b can be adjusted.

  Accordingly, corresponding to each cam 92 of the camshaft 90 rotated by the work holding means 10, the first arm 45 and the second arm 46 are urged in the closing operation direction, and the blade portions of the deburring chips 53A and 53B are urged. 53Aa and 53Ba are pressed against the side edges 93a and 93b of the cams 92 to remove the processing burrs, and the deburring chips 53A and 53B are connected to the side edges at the open positions of the first and second arms 45 and 46. Deburring mechanisms 41-1 to 41-4 that are separated from 93 a and 93 b are arranged, and the deburring mechanism hydraulic cylinder mechanism 62 of the deburring mechanism driving unit 61 moves the slide plate 65 to a deburring mechanism open position and a deburring mechanism closed position. And deburring through conversion mechanisms 71-1 to 71-4 respectively arranged between the slide plate 65 and the deburring mechanisms 41-1 to 41-4. By holding the first arm 45 and the second arm 46 of the structures 41-1 to 41-4 in the open position or releasing the arm in the open position, a single hydraulic cylinder mechanism 62 for the deburring mechanism can be used. The deburring of the side edge 93a, 93b of each cam 92 by the operation of the deburring mechanism 41-1 to 41-4 becomes possible. Accordingly, the deburring mechanism 41-1 to 41-4 can be deburred by driving the single deburring mechanism hydraulic cylinder mechanism 62, and the configuration of the deburring device 1 can be simplified. The manufacturing cost and maintenance cost of the deburring device 1 can be suppressed. Further, since the blade portions 53Aa and 53Ba of the deburring tips 53A and 53B are pressed against the side edges 93a and 93b of the cam 92 of the camshaft 90, the machining burr is scraped off from the root thereof, and the side edge 93a of the cam 92 is removed. , 93b can completely remove the processing burr. Further, the deburring chips 53A and 53B do not come into contact with the cam surface 93 of the cam 92, so that the cam 92 can be prevented from being damaged due to the deburring operation.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where the rod-shaped workpiece is the camshaft 90 of the engine including the four cams 92 has been described as an example, but the camshaft including the other number of cams 92, the crankshaft, and the like It can also be applied to processing deburring of other rod-shaped workpieces having other small diameter portions and large diameter portions.

1 is an overall plan view of a deburring device according to the present embodiment. It is the II sectional view taken on the line of FIG. It is the A section enlarged view of FIG. It is the II-II sectional view taken on the line of FIG. It is a principal part disassembled perspective view. It is the B arrow directional view of FIG. 1 which abbreviate | omitted the deburring mechanism and the conversion mechanism. It is a flowchart which shows an action | operation. It is explanatory drawing of a deburring state. It is a conceptual diagram of the conventional deburring apparatus. It is a conceptual diagram of the conventional deburring apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Deburring apparatus 10 Work holding means 20 Deburring mechanism part 21 Base part 25 Hydraulic cylinder mechanism for units (actuator for unit back-and-forth movement)
27 Deburring unit position detection means 30 Deburring unit 31 Base portions 41-1 to 41-4 Deburring mechanism 42 Arm support portion 45 First arm (arm)
46 Second arm (arm)
45A, 46A Center part 45Aa, 46Aa Shaft hole 45B, 46B Tip part 45C, 46C Base end part 45D, 46D Cam sliding contact surface 45F Dog part 47 Arm holding member 48a, 48b, 48c Foreign matter intrusion prevention ring (shaft part sealing means)
49a, 49b, 49c Foreign matter entry prevention seal (shaft seal means)
51a, 51b Flange sleeves 53A, 53B Deburring tips 53Aa, 53Ba Blade portions 56a, 56b Tension coil springs (biasing means)
61 Deburring mechanism driving part 62 Deburring mechanism hydraulic cylinder mechanism (deburring mechanism driving actuator)
65 Slide plate (reciprocating member)
66-1 to 66-4 Cam followers 71-1 to 71-4 Conversion mechanism 72 Cam shaft 75 Cam 75a, 75b Side end portion 76 Link 77 Engaging groove (locking portion)
78-1 to 78-4 Arm closing operation confirmation means 81 Air blow device 90 Cam shaft (bar-shaped workpiece)
91 Shaft (small diameter part)
92 Cam (large diameter part)
93 Cam surface (outer peripheral surface)
93a, 93b side edge

Claims (4)

In a deburring device for removing a processing burr protruding from a side edge of each of the large-diameter portions of a rod-shaped workpiece having a small-diameter portion and a plurality of large-diameter portions,
Workpiece holding means for holding the rod-shaped workpiece and rotating it around the axis of the rod-shaped workpiece;
A pair of deburring tips that are pivotally supported so as to be openable and closable by arm support portions respectively disposed corresponding to the large-diameter portions of the rod-shaped workpiece rotated by the workpiece holding means. And an urging means for urging the arm in the closing operation direction. The arm is urged in the closing operation direction so that each deburring tip is pressed against both side edges of each large-diameter portion and the arm. A deburring mechanism in which each deburring tip is separated from the side edge at the open position;
A deburring mechanism driving unit having a reciprocating member and a deburring mechanism driving actuator for reciprocating the reciprocating member between a deburring mechanism open position and a deburring mechanism closed position;
The reciprocating member is disposed between the reciprocating member and each deburring mechanism, and the reciprocating motion of the reciprocating member is converted into an opening / closing operation of each arm of each deburring mechanism in conjunction with the reciprocating motion. A conversion mechanism in which the member holds the arm in the open position in the deburring mechanism open position and releases the open position holding of the arm in the deburring mechanism closed position ;
Each arm of the deburring mechanism is pivotally supported by the arm support portion so that the center portions thereof cross each other, and the tip portion projects from the center portion toward the work holding means and the center portion. A base end portion formed with cam sliding contact surfaces that protrude to the side away from the workpiece holding means and face each other;
A plurality of cam followers are disposed on the reciprocating member corresponding to each deburring mechanism,
The conversion mechanism is
A camshaft rotatably supported corresponding to each deburring mechanism and a link extending in the radial direction from the camshaft and formed with a locking portion that fits the cam follower are coaxial with the camshaft. Having a cam formed between the opposing cam sliding surfaces formed above,
The cam follower moves as the reciprocating member moves from the deburring mechanism closed position to the deburring mechanism open position, so that the cam rotates to the open position and widens the opposing cam sliding contact surfaces to open the arms. The cam is rotated to the closed position by the movement of the cam follower accompanying the movement of the reciprocating member from the open position of the deburring mechanism to the closed position of the deburring mechanism, and the open position holding of the arm is released. Deburring device characterized by. Each of the deburring mechanism, the deburring mechanism driving unit, and the conversion mechanism are provided in a base portion that moves between a deburring work position that approaches the work holding means and a retracted position that is separated from the work holding means,
The biasing means when the arm is released from holding the open position by rotating the cam to the closed position in accordance with the movement of the reciprocating member from the deburring mechanism open position to the deburring mechanism closed position in the retracted position. The arms are biased to the closed position where the deburring tips abut or approach each other,
2. The deburring device according to claim 1, further comprising arm closing operation confirmation means for detecting a closing position of the arm . Each of the deburring mechanism, the deburring mechanism driving unit, and the conversion mechanism are provided in a base portion that moves between a deburring work position that approaches the work holding means and a retracted position that is separated from the work holding means,
The biasing means when the arm is released from holding the open position by rotating the cam to the closed position in accordance with the movement of the reciprocating member from the deburring mechanism open position to the deburring mechanism closed position in the retracted position. The arms are biased to the closed position where the deburring tips abut or approach each other,
The deburring device according to claim 1, further comprising an air blowing device that blows air onto the deburring tip in the closed position . 2. Each of the arms is pivotally supported by the arm support portion via a sleeve so as to be rotatable, and is provided with a shaft seal means for covering the pivot support portion so that the arm can be rotated. The deburring apparatus of any one of 1-3 .

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