JP2004202626A - Deburring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deburring device for surely removing a burr without damaging work surfaces. <P>SOLUTION: This deburring device 1 has a workpiece holding means 10 for holding and rotating a workpiece 60 around the axis Lx and a deburring means 20 for removing a work burr by push-contacting a blade tool 35 with the side edges 61a and 62a of the workpiece 60 rotated by the workpiece holding means 10. Thus, the workpiece 60 is rotated around the axis Lx; the blade tool 35 is push-contacted with the side edges 61a and 62a of large diameter parts 61 and 62; the work burr is removed from the root; and damaging to the work surfaces 61c and 62c caused by removing work of the work burr is prevented. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a deburring apparatus, and more particularly to a deburring apparatus that removes processing burrs that protrude in an axial direction from a side edge of a large-diameter portion of a cylindrical workpiece having a large-diameter portion and a small-diameter portion.
[0002]
[Prior art]
For example, a camshaft of an engine is subjected to a grinding process on a cam surface, and the grinding process generates burrs protruding in the axial direction on both side edges in the axial direction of the cam surface. Therefore, various methods and apparatuses for removing the burrs have been conventionally proposed.
[0003]
FIG. 8 is an explanatory view showing a conventional deburring apparatus. The apparatus includes a workpiece holding unit 101 that holds a columnar workpiece 100 having a groove formed along a circumferential surface and rotates the workpiece around an axis thereof, and holds the workpiece by the workpiece holding unit 101. A pair of cup-shaped brushes 102 disposed opposite to each other at a position sandwiching the workpiece 100, and a brush rotation driving unit 103 that holds the pair of cup-shaped brushes 102 and rotationally drives them in forward and reverse directions. A first table portion 104 for reciprocating the cup-shaped brushes 102 in a direction of coming into contact with and separating from the workpiece 100, and a second table portion for relatively moving the cup-shaped brushes 102 in the axial direction of the workpiece 100. It has a table unit 105.
[0004]
The cup-shaped brush 102 has a disc-shaped substrate 102a held by the brush rotation drive unit 103 such that the rotation center axis L2 is orthogonal to the axis L1 of the workpiece 100, and is implanted on one surface of the substrate 102a. , And a myriad of wires 102b protruding from the substrate 102a along the rotation center axis.
[0005]
When removing burrs using this apparatus, first, the workpiece 100 is held and rotated about its axis L1. Then, the pair of cup-shaped brushes 102 are brought into contact with the workpiece 100 while rotating. As a result, the wire 102b of the cup-shaped brush 102 is brought into contact with the burr generated at the edge of the groove 100a, and the burr is removed from the camshaft by breaking it from the root. (For example, see Patent Document 1).
[0006]
[Patent Document 1]
JP-A-5-57586 (paragraph numbers "0009" to "0010", FIG. 1)
[0007]
[Problems to be solved by the invention]
However, in the above-described conventional apparatus, the outer peripheral surface 100b that has already been ground is also rubbed by the wire 102b of the cup-shaped brush 102. Therefore, when the wire rod 102b is made of a soft synthetic resin material such as nylon in order to prevent the grinding processed surface (cam surface) 100b from being damaged, the burr is only bent and removed. Is difficult. On the other hand, if the wire 102b is made of a hard material in order to reliably remove burrs, there is a possibility that the processed surface 100b may be damaged.
[0008]
The present invention has been made in view of the above points, and an object of the present invention is to provide a deburring device capable of reliably removing burrs without damaging a processed surface.
[0009]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a deburring apparatus for removing a processing burr protruding in an axial direction from a side edge of a large diameter portion of a cylindrical workpiece having a large diameter portion and a small diameter portion. In a deburring apparatus, a workpiece holding means for holding and rotating the workpiece around its axis, and pressing a blade tool against a side edge of the workpiece rotated by the workpiece holding means. And burr removing means for removing the processing burr.
[0010]
According to the present invention, since the workpiece is rotated around its axis and the cutting tool is pressed against the side edge of the large-diameter portion, the processing burr can be removed from its root and completely removed from the workpiece. Further, by making the outer peripheral surface of the large diameter portion non-contact, it is possible to prevent the outer peripheral surface of the large diameter portion from being damaged due to the deburring operation.
[0011]
According to a second aspect of the present invention, in the deburring apparatus according to the first aspect, the position of the deburring means is set to a processing position for performing the deburring process on the workpiece and a retracted position separated from the workpiece. It is characterized by having a changeable moving means.
[0012]
According to the present invention, the arrangement position of the deburring means can be moved between the processing position and the retreat position, so that the blade tool can be replaced, inspected, cleaned, etc. at the retreat position, and maintenance can be simplified. Can be achieved.
[0013]
According to a third aspect of the present invention, in the deburring apparatus according to the first or second aspect, the deburring means includes a base portion arranged to face the workpiece held by the workpiece holding means; An arm which is swingably supported by the base portion and has a cutting tool holder for holding the cutting tool at its tip, and which can swing in a direction in which the cutting tool held by the cutting tool holder comes into contact with and separates from a side edge of the workpiece. And an arm swinging means provided on the base for swinging the arm and pushing the cutting tool against the side edge of the workpiece.
[0014]
According to this invention, the blade held by the blade holder can be pressed against the side edge of the large diameter portion by swinging the arm by the arm swing means. Therefore, according to the principle of leverage, the cutting tool can be pressed against the side edge of the large diameter portion with a larger pressing force, and the processing burrs can be completely removed. Further, by holding the cutting tool with the cutting tool holder, the replacement work of the cutting tool can be facilitated.
[0015]
According to a fourth aspect of the present invention, in the deburring apparatus according to the third aspect, the blade has a distal end thereof opposed to a side surface of the large-diameter portion and extends radially outward. Is located radially outward from the workpiece, gradually approaches the side surface of the large-diameter portion as it moves from the tip to the base end of the cutting tool, and is processed in a posture inclined with respect to the radial direction of the workpiece. It is characterized by being held so as to be able to press against the side edge of the object.
[0016]
According to the present invention, the blade is pressed against the side edge of the workpiece in a posture inclined with respect to the radial direction of the workpiece, so that the blade can be pressed into contact with the corner of the side edge. Therefore, the processing burr can be removed from its root and completely removed.
[0017]
According to a fifth aspect of the present invention, in the deburring apparatus according to the third or fourth aspect, the base portion is disposed above the workpiece at the processing position, and the arm portion and the arm are positioned below the base portion. The swinging means is suspended and supported.
[0018]
According to the present invention, at the processing position, the base portion is disposed above the workpiece, so that the processing burr removed from the workpiece can be dropped as it is without adhering to the base portion.
[0019]
According to a sixth aspect of the present invention, in the deburring apparatus according to any one of the third to fifth aspects, the arm portion is located at a lateral position of the workpiece held by the workpiece holding means. Extending outward in the radial direction of the workpiece and spaced apart from each other by a predetermined distance in the axial direction of the workpiece to form a pair. The arm swinging means moves the pair of arms in a direction in which the tip ends thereof approach each other. It is characterized in that it is swung and the blade is pressed against both side edges of the large diameter portion from both sides in the axial direction.
[0020]
According to the present invention, a pair of arm portions can be rocked by one arm rocking means. Therefore, the number of the arm swing means can be reduced, and the manufacturing cost and operating cost of the device can be reduced.
[0021]
According to a seventh aspect of the present invention, in the deburring apparatus according to the sixth aspect, the pair of arms are concavely formed on surfaces facing each other at their base ends, and shift toward the base end of the arm. The arm portion swing means has a base end pivotally supported at a position more radially apart from the base end of the arm than the base end of the arm. And a cylinder whose tip side is swingably supported in the axial direction of the workpiece, and which can extend and contract from the tip of the cylinder and reciprocate between a pair of arm portions along the extending direction of the arm portions. And a rod provided at the distal end of the rod, which moves inside the pair of recesses toward the base end side of the arm portion to abut on the inclined surface and swing the distal end sides of the arm portions toward each other. And an operating piece to be operated.
[0022]
According to the present invention, by moving the operation piece toward the base end side of the arm portion within the recessed portion, the distal ends of the pair of arm portions can be swung in a direction approaching each other. And, since the base end of the cylinder is pivotally supported on the base portion and the front end side is swingably supported in the axial direction of the workpiece, a pair of cutting tools are provided for both side edges of the large diameter portion. Pressing can be performed with the same pressing force.
[0023]
Further, for example, when the holding position of the workpiece is displaced in the axial direction with respect to the burr removing means, or when the position of the large diameter portion is displaced in the axial direction due to a manufacturing error, the tip end side of the cylinder is processed. By swinging in the axial direction of the object, it is possible to follow the displacement in the axial direction. Therefore, processing burrs can be completely removed from the side edge of the large diameter portion.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
[0025]
FIG. 1 is an overall explanatory view of a deburring apparatus 1 according to the present embodiment, FIG. 2 is a view in the direction of arrow A in FIG. 1, FIG. 3 is a view in the direction of arrow B in FIG. 1, and FIG. FIG. 5 is an explanatory view showing an enlarged main part of FIG. 2, FIG. 6 is a view taken in the direction of arrow C in FIG. 4, and FIG. 7 is an illustration of a deburring state. FIG.
[0026]
In FIG. 1, reference numeral 10 denotes a workpiece holding unit, reference numeral 20 denotes a burr removing unit, and reference numeral 60 denotes a camshaft.
[0027]
The camshaft 60, which is a cylindrical workpiece, is of a horizontally opposed six-cylinder engine, and is a VVC camshaft 60 having a high cam 61 and a low cam 62. As shown in FIG. 3, the camshaft 60 has a high cam 61 and a low cam 62 which are large diameter portions, and a shaft portion 63 which is a small diameter portion, and the high cams 61 are arranged on both sides of the low cam 62. A combination of the low cam 62 and the high cam 61 constitutes one set, and a total of six sets are arranged at predetermined intervals in the axial direction for each valve.
[0028]
As shown in FIG. 1, the workpiece holding means 10 holds both ends of the camshaft 60 and rotates the camshaft 60 around its axis, and the main spindles are arranged opposite to each other at a predetermined distance from each other. A table 11 and a tailstock 16 are provided.
[0029]
The headstock 11 has a first slide table mechanism 12 that can move in a direction to approach or separate from the tailstock 16, and an upper part of the first slide table mechanism 12 has one side of a camshaft 60. A head stock 13 for holding the ends coaxially rotatable and a rotary motor 14 for rotating the head stock 13 are provided.
[0030]
On the other hand, the tailstock 16 has a second slide table mechanism 17 that can move in the same direction as the first slide table mechanism 12 of the headstock 11. A tailstock center 18 for holding the other end of the shaft 60 so as to be coaxially rotatable is provided.
[0031]
The headstock 13 of the headstock 11 and the tailstock center 18 of the tailstock 16 have their rotation center axes Lx arranged on the same straight line, and are mutually moved by the first slide table mechanism 12 and the second slide table mechanism 17. By moving the headstock 13 in the approaching direction and fitting it into the center holes 64 and 65 (see FIG. 3) of the camshaft 60, both ends of the camshaft 60 can be coaxially rotatable. The camshaft 60 is configured to be able to rotate around its axis by driving.
[0032]
As shown in FIG. 1, the deburring means 20 is disposed at a position between the headstock 11 and the tailstock 16, and is provided at a column (shown in FIG. 1) which stands upright at a position lateral to the rotation center axis Lx. ) Is swingably supported.
[0033]
The base portion 21 of the deburring means 20 is made of a flat steel plate member having a predetermined thickness. As shown by a solid line in FIG. 2, the base portion 21 of the camshaft 60 held by the workpiece holding means 10 is formed. A processing position extending in a substantially horizontal direction along the camshaft 60 at an upper position, and a support bracket 22 provided at an end of the base portion 21 as shown in FIG. The disposition position is provided movably at a retreat position extending substantially vertically with the shaft 23 as a swing center. As shown in FIGS. 3 and 4, the opposing surface 24 of the base portion 21 opposing the camshaft 60 due to the arrangement at the processing position is arranged in a line on both sides thereof with the camshaft 60 interposed therebetween. A plurality of arm units 30 to be arranged and arm unit swing means 40 for swinging the arm units 30 are provided.
[0034]
As shown in FIG. 4, the arm portion 30 has a substantially prismatic shape, and is provided in a pair with each of the high cam 61 and the low cam 62. The arm portions 30 are substantially parallel to each other and each of the high cam 61 and the low cam 62. They are arranged at positions corresponding to the side end surfaces on both sides. It extends along the base portion 21 in a direction perpendicular to the rotation center axis Lx and in a direction away from the camshaft 60, and a substantially central portion is pivotally supported by the base portion 21, and the distal end portion 31 is rotated by the rotation center. It is swingably supported in the extending direction of the axis Lx.
[0035]
As shown in FIG. 4, a cutting tool holder 32 is provided at a distal end portion 31 of the arm section 30, and holds a cutting tool 35. The cutting tool 35 is formed of a rectangular flat plate member, and has a plate thickness narrower than the gap between the high cam 61 and the low cam 62, and the tip end thereof when held by the cutting tool holder 32 is on the side of the high cam 61 and the low cam 62. It has a length facing the end faces 61b and 62b.
[0036]
The blade holder 32 holds the blade 35 in such a state that the distal end of the blade 35 projects from the distal end 31 of the arm 30 along the direction in which the arm 30 extends, and is viewed in the direction of arrow C in FIG. As shown in FIG. 6, a notch groove 32 a is formed at the distal end portion 31 of the arm portion 30 in a direction orthogonal to the base portion 21.
[0037]
The notch groove 32a has a notch width into which the base end of the cutting tool 35 can be inserted, and the end on the base portion 21 side is formed when the cutting tool 35 is inserted from the end on the side separated from the base portion 21. , And is closed by a retaining plate 32b so as to form a bottom surface. On the other hand, at the end of the cutout groove 32a on the side away from the base portion 21, there is a holding piece 32c for fixing the cutting tool 35 in a state inserted into the cutout groove 32a.
[0038]
The holding piece 32c has a base end rotatably supported by the arm 30. The holding piece 32c is disposed at a position to close the end of the cutout groove 32a by turning the tip, and is tightened by the holding screw 32d. It is configured such that the cutting tool 35 can be sandwiched between the retaining plate 32b. Reference numeral 32e in FIG. 6 denotes a wedge piece for suppressing rattling of the cutting tool 35 in the cutout groove 32a. The wedge piece 32e is configured to be pressed into the notch groove 32a by the holding piece 32c, thereby suppressing rattling of the cutting tool 35 and securely fixing the same.
[0039]
On the other hand, as shown in FIGS. 3 and 4, a concave portion 34 is provided in the base end portion 33 of the arm portion 30. The recesses 34 are symmetrically provided on the surface facing the other arm 30 so as to form a pair, and swing the arm 30 by contact with an operation piece 43 of the arm swinging means 40 described later. The cutting tool 35 is moved so that the cutting tool 35 is positioned at a pressing position where the cutting tool 35 can be pressed against the side edges 61a, 62a of the high cam 61 and the low cam 62, and the cutting tool 35 is moved to the side edges 61a of the high cam 61 and the low cam 62. , 62a is provided with a separation position arranging surface 34b which is arranged at a separation position to be separated from the other.
[0040]
FIG. 7 is an enlarged view of a main part illustrating a state where the cutting tool 35 is pressed against the side edge 62 a of the low cam 62. Since the high cam 61 is the same as the low cam 62, the description thereof is omitted. In a state where the pair of arms 30 presses the cutting tool 35 against the low cam 62, the distance between the arms 30 gradually decreases as the tip 35 moves from the distal end toward the proximal end. So that it is pivotally supported by the base portion 21.
[0041]
Accordingly, the tip of the blade 35 is opposed to the side end surface 62b of the low cam 62 and extends radially outward of the camshaft 60, and the base end of the blade 35 is larger in diameter than the high cam 61 and the low cam 62. And gradually approaches the side end surface 62b of the low cam 62 as it moves from the distal end to the base end of the cutting tool 35, and pushes against the side edge 62a in a state of being slightly inclined with respect to the side end surface 62b of the low cam 62. Touched. Therefore, the cutting tool 35 can be pressed into contact with the corner of the side edge 62a.
[0042]
The arm swinging means 40 swings the arm 30 to press the cutting tool 35 against the side edges 61a, 62a of the high cam 61 and the low cam 62. The arm 42 swings the rod 42 from the cylinder 41 by supplying compressed air or the like. It has a cylinder structure for extending and contracting, and as shown in FIG. 3, extends from the base end portion 33 of the arm portion 30 in a direction perpendicular to the rotation center axis Lx and in a direction away from the rotation center axis Lx. The base 41 of the cylinder 41 is pivotally supported by the base 21, and the tip 41 a of the cylinder 41 is supported so as to be able to swing along the rotation center axis Lx.
[0043]
An operation piece 43 is attached to the tip of the rod 42, and is disposed so as to be interposed between the concave portions 34 of the pair of arm portions 30. As shown in FIG. 4, the operation piece 43 has a tapered surface portion 43a whose diameter gradually increases as it moves from the connection portion with the rod 42 toward the distal end, and a hemisphere continuously projecting forward from the front end of the tapered surface portion 43a. It has a convex spherical portion 43b. The tapered surface portion 43a has a shape that abuts against the pressing position locating surface 34a of the concave portion 34 by contraction of the rod 42 to press the cutting tool 35 against the side edges 61a, 62a of the high cam 61 and the low cam 62. . In addition, the spherical portion 43b has a shape in which the cutting tool 35 is separated from the side edges 61a, 62a of the high cam 61 and the low cam 62 by abutting on the separation position arrangement surface 34b of the concave portion 34 due to the extension of the rod 42.
[0044]
As shown in FIGS. 2 and 5, the arm 30 and the arm swinging means 40 are offset with respect to the rotation center axis Lx. Specifically, the separation distance from the base portion 21 is different between the one side and the other side (the right side and the left side in FIGS. 2 and 5) with the camshaft 60 interposed therebetween, and is different from the rotation center axis Lx. It is arranged so as to be deviated to a symmetrical position, and is configured such that the rotation of the camshaft 60 causes the upper edge 35a of the cutting tool 35 to be pressed against the side edges 61a, 62a of the high cam 61 and the low cam 62. ing.
[0045]
Reference numeral 25 in FIGS. 2 and 5 denotes an opening for air blow. The opening holes 25 are formed at predetermined positions on the facing surface 24 of the base 21, more specifically, at positions corresponding to the contact positions between the side edges 61 a and 62 a of the high cam 61 and the low cam 62 and the cutting tool 35. It is formed and communicates with the air supply passage 26 that penetrates through the inside of the base portion 21 along the rotation center axis Lx. By supplying compressed air from an air source (not shown) to the air supply passage 26, air can be ejected, and the processing burr 65 removed by the cutting tool 35 can be blown off by the air. ing.
[0046]
Reference numeral 50 in FIGS. 1 and 2 denotes a deburring means moving means. The deburring means moving means 50 is provided with a cylinder body 51 whose base end is supported by a column (not shown) and a tip end of the cylinder body 51 so as to be extendable and contractible. And a supported cylinder rod 52. Then, by switching and supplying a fluid such as compressed air by an electromagnetic valve or the like (not shown) to extend or contract the cylinder rod 52, the burr removing means 20 can be moved to the processing position and the retreat position. Have been.
[0047]
Next, a method of removing burrs from the camshaft 60 using the deburring apparatus 1 having the above configuration will be described below.
[0048]
First, the camshaft 60 is mounted on the deburring device 1. Here, as advance preparation, the headstock 11 and the tailstock 16 of the workpiece holding means 10 are arranged at the origin positions separated from each other, and the burr removing means 20 is arranged at the retreat position. When this preliminary preparation is completed, the camshaft 60 to be subjected to the deburring operation is carried in by a transfer device (not shown), and is arranged on the rotation center axis Lx at a position between the headstock 11 and the tailstock 16. You.
[0049]
When the camshaft 60 is arranged on the rotation center axis Lx, the tailstock 16 is moved to the headstock 11 side and arranged at a preset position. Then, the headstock 11 is moved in a direction approaching the tailstock 16, and the headstock 13 of the headstock 11 is inserted into the center hole 65 of the camshaft 60 to hold one end of the camshaft 60 coaxially rotatable. At the same time, the tailstock center 18 of the tailstock 16 is inserted into the center hole 64 at the other end of the camshaft 60 and held coaxially. Thus, the camshaft 60 is held coaxially rotatable on the rotation center axis Lx. Then, the transport device (not shown) is evacuated.
[0050]
Next, the blade 35 is pressed against the side edges 61a, 62a of the high cam 61 and the low cam 62 while rotating the cam shaft 60. Here, first, in a state where the burr removing unit 20 is located at the retracted position, the rod 42 of the arm unit swinging unit 40 is extended, and the spherical portion 43 b of the operation piece 43 is pressed against the separation position arrangement surface 34 b of the recess 34. Contact Thereby, the tip portions 31 of the pair of arm portions 30 are swung in a direction away from each other, the interval between the blade tools 35 facing each other is made larger than the cam width of the high cam 61 and the low cam 62, and the distance between the high cam 61 and the low cam 62 is increased. When the burr removing means 20 is moved to the processing position, the tip of the cutting tool 35 is arranged at a position where it can be inserted between the high cam 61 and the low cam 62.
[0051]
Next, the burr removing means 20 is moved from the retracted position to the processing position, and the camshaft 60 is interposed between the two groups of arm units 30 arranged substantially in parallel with each other (see FIGS. 2 to 4). Then, the rotation motor 14 of the main shaft portion 11 is driven to rotate, the head stock 13 is rotated, and the camshaft 60 is rotated around its axis. When the rotation speed of the camshaft 60 reaches the predetermined rotation speed, the rod 42 of the arm part swing means 40 is contracted, and the tapered surface portion 43b of the operation piece 43 is pressed against the pressing position arrangement surface 34a of the concave portion 34. Thereby, the tip portions 31 of the pair of arm portions 30 are swung in a direction approaching each other, and the cutting tool 35 is moved in a direction approaching the side end surfaces 61b, 62b of the high cam 61 and the low cam 62, and is rotated. The cutting tool 35 is pressed against the side edges 61a and 62a of the high cam 61 and the low cam 62 of the camshaft 60, and the burrs are removed.
[0052]
Therefore, the processing burr 65 can be removed from its root and removed from the side edges 61a, 62a. In particular, since the cutting tool 35 is pressed against the side end surfaces 61b, 62b of the high cam 61 and the low cam 62 in a slightly inclined posture, the cutting tool 35 can be pressed against the corners of the side edges 61a, 62a. The processing burr 65 can be completely removed from the side edges 61a, 62a. Further, since the processing burrs 65 are removed without contacting the ground cam surfaces (processing surfaces) 61c and 62c of the high cam 61 and the low cam 62, the damage to the cam surfaces 61c and 62c due to the deburring operation is eliminated. Sticking can be prevented.
[0053]
The processing burr 65 removed here does not adhere to the base portion 21 and falls down as it is, or is blown downward by air blow from the opening hole 25, and is disposed at a position below the rotation center axis Lx. Is received by the burr receiving tray 2 that has been set. As described above, at the processing position, the base portion 21 is disposed at a position higher than the camshaft 60, and the arm portion 30 and the arm portion swing means 40 are suspended and supported on the facing surface 24. The processing burrs 65 removed from 60 can be prevented from adhering and accumulating on the burrs removing means 20 such as the periphery of the blade 35 and the base 21. Therefore, the cleaning operation of the deburring means 20 can be simplified.
[0054]
Next, the camshaft 60 from which the processing burr 65 has been removed is carried out of the deburring apparatus 1. First, when a predetermined time elapses in the burr removal operation state, it is determined that removal of the processing burr 65 has been completed, the rod 42 of the arm swinging means 40 is extended, and the spherical portion 43b of the operation piece 43 is disposed at the separated position. Presses against the surface 34b. Thus, the distal end portion 31 of the arm portion 30 is swung in a direction away from the side end surfaces 61b, 62b of the high cam 61 and the low cam 62, and the cutting tool 35 is separated from the side end edges 61a, 62a. Then, the burr removing means 20 is moved from the processing position to the retracted position, and the rotation of the cam shaft 60 is stopped.
[0055]
Then, after the camshaft 60 is supported by a transport device (not shown), the headstock 11 and the tailstock 16 are moved in a direction away from each other to release the holding of the camshaft 60 by the workpiece holding means 10, It is carried out of the deburring apparatus 1 to the outside, and the deburring operation of the camshaft 60 is completed.
[0056]
After the deburring operation of the camshaft 60 is completed, the headstock 11 and the tailstock 16 are arranged at positions separated from each other, a working space is formed therebetween, and the deburring means 20 is moved to the retracted position. Since the base unit 21 is arranged and held in a posture in which the base unit 21 stands upright, maintenance such as replacement of the cutting tool 35 and inspection work by an operator can be easily performed.
[0057]
According to the deburring apparatus 1 having the above configuration, the arm swinging means 40 pivotally supports the base end 41b of the cylinder 41 on the base 21 and moves the tip end 41a of the cylinder 41 along the rotation center axis Lx. Since the blade 35 is swingably provided, the blade 35 can be pressed against the side edges 61a and 62a with the same pressing force. Therefore, deburring with uniform accuracy can be performed on the camshaft 60, and the quality of the product can be kept constant.
[0058]
For example, when the holding position of the camshaft 60 by the workpiece holding means 10 is shifted in the axial direction, or when the positions of the high cam 61 and the low cam 62 are shifted in the axial direction due to a product error, the high cam 61 and the low cam 62 are shifted. The pair of arms 30 can follow the positional deviation of the side edges 61a, 62a of the pair. Therefore, the processing burr 65 can be completely removed from the side edges 61a, 62a of the high cam 61 and the low cam 62.
[0059]
In addition, since the blade 35 having a substantially flat plate shape is used, it is possible to use a total of eight positions for one blade 35 by changing its mounting direction or holding the blade 35 in the adjacent blade holder 32, for example. it can. Therefore, the replacement cycle of the cutting tool 35 can be lengthened, and the running cost can be reduced.
[0060]
Further, since the pair of arms 20 are swung by one arm swinging means 40, the number of arm swinging means 40 can be reduced, and the manufacturing cost and operating cost of the apparatus are reduced. be able to.
[0061]
The embodiments of the present invention are not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where the workpiece is the camshaft 60 of the engine has been described as an example. However, the workpiece is a cylindrical workpiece having large-diameter portions 61 and 62 and a small-diameter portion 63. Any workpiece may be used as long as the processing burrs 65 protrude in the axial direction from the side end faces 61b, 62b of the large diameter portions 61, 62 by grinding the outer peripheral surfaces 61c, 62c of the large diameter portions 61, 62. For example, it may be an engine crankshaft or the like.
[0062]
【The invention's effect】
As described above, according to the deburring apparatus of the present invention, since the cutting tool is pressed against the side edge of the large diameter portion of the rotating workpiece, the processing burr is scraped off from its root, and It can be completely removed from the workpiece. Further, since the processing burrs are removed without contacting the outer peripheral surface of the large diameter portion, it is possible to prevent the processing surface from being damaged by the processing of removing the processing burrs.
[Brief description of the drawings]
FIG. 1 is an overall explanatory view of a deburring apparatus according to the present embodiment.
FIG. 2 is a view in the direction of arrow A in FIG. 1;
FIG. 3 is a view in the direction of arrow B in FIG. 1;
FIG. 4 is an explanatory diagram showing an enlarged main part of FIG. 3;
FIG. 5 is an explanatory diagram showing an enlarged main part of FIG. 2;
FIG. 6 is a view as viewed in the direction of arrow C in FIG. 4;
FIG. 7 is an explanatory diagram of a deburring state.
FIG. 8 is an explanatory view showing a conventional deburring apparatus.
[Explanation of symbols]
1 Deburring device
10 Workpiece holding means
20 Deburring means
30 arm
35 cutting tools
40 Arm part swing means
50 Deburring means Moving means
60 Workpiece
61 High cam (large diameter part)
62 Low cam (large diameter part)
63 Small diameter part
61a, 62a side edge
61b, 62b side end face
61c, 62c Cam surface (machined surface)

Claims (7)

In a deburring apparatus for removing a processing burr that protrudes in an axial direction from a side edge of the large-diameter portion of a cylindrical workpiece having a large-diameter portion and a small-diameter portion,
Work piece holding means for holding the work piece and rotating the work piece around an axis thereof,
A deburring device comprising: a deburring means for removing a processing burr by pressing a cutting tool against a side edge of a workpiece rotated by the workpiece holding means. 2. The moving device according to claim 1, further comprising a moving unit configured to change a position of the deburring unit between a processing position for performing deburring on the workpiece and a retracted position separated from the workpiece. 3. Deburring device. The deburring means,
A base portion arranged to face the workpiece held by the workpiece holding means,
A cutting tool holder, which is swingably supported by the base portion and holds the cutting tool, is provided at a distal end; and the cutting tool held by the cutting tool holder is swung in a direction of coming into contact with and separating from a side edge of the workpiece. A free arm,
An arm swinging means provided on the base, swinging the arm and pressing the cutting tool against a side edge of the workpiece;
The deburring apparatus according to claim 1, further comprising: The cutting tool,
The tip of the cutting tool is opposed to the side surface of the large-diameter portion, extends radially outward of the workpiece, and the base end of the cutting tool is located radially outward of the workpiece, As it moves from the tip of the cutting tool to the base end, it gradually approaches the side surface of the large diameter portion, and can be pressed against the side edge of the workpiece in a posture inclined with respect to the radial direction of the workpiece. The deburring apparatus according to claim 3, wherein the deburring apparatus is held. The base part is
The said arm part and the said arm part rocking | fluctuation means are arrange | positioned at the said processing position at the position above the to-be-processed object, and suspend and support below the said base part, The said part. Deburring device. The arm portion extends radially outward of the workpiece at a lateral position of the workpiece held by the workpiece holding means, and extends in the axial direction of the workpiece. Separated from each other by a distance to form a pair,
The arm swinging means swings the pair of arms in a direction in which the distal ends of the arms approach each other, and presses the blade against both side edges of the large diameter portion from both axial sides. The deburring device according to any one of claims 3 to 5. The pair of arm portions are recessed in surfaces facing each other at a base end portion of the arm portion, and are formed with inclined surfaces that gradually approach each other as they move toward the base end of the arm portion. Has,
The arm swinging means has a base end pivotally supported at a position radially apart from the base end of the arm than the base end of the arm, and a tip end side is swingable in the axial direction of the work. A supported cylinder, a rod extending and contracting from the tip of the cylinder and capable of reciprocating between the pair of arms along the extending direction of the arm, and provided at the tip of the rod; An operating piece that moves inside the pair of recesses toward the base end side of the arm portion to abut on the inclined surface and swings the distal end sides of the arm portions in directions approaching each other. The deburring apparatus according to claim 6, wherein

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