JP2003025199A - Deburring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deburring device offering simple construction permitting easy removal of burrs in a cross hole. SOLUTION: The deburring device 10 comprises a body 11 to be rotationally driven by a rotation driving device, a holder 20 tiltingly supported by the body 11 for holding a deburring tool 1 at its base end, the holder 20 being capable of tilting from a basic attitude condition where the deburring tool 1 extends coaxially with a rotational center axis L of the body 11 to a tilting attitude condition where it tilts to the rotational center axis L, basic attitude condition energizing means 40 for energizing the holder 20 into the basic attitude condition, a rocking arm 50 having a base end supported by the body 11 and a front end rocking in the direction of separation from the rotational center axis L with centrifugal force due to the rotation of the body 11, and holder tilting means 60 laid between the rocking arm 50 and the holder 20 for making the holder 20 tilt into the tilting attitude condition in response to the rocking of the rocking arm 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring device, and more particularly, to a deburring device for removing burrs generated at intersections of intersecting holes when forming intersecting holes in a work.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 2000-254846 discloses
A method and apparatus for removing burrs that occur at the intersections of intersection holes are disclosed. FIG. 7 is a diagram for explaining the technique disclosed in this publication. According to the publication, an oil hole 1 is formed in a work 100 such as a balance shaft of an automobile engine.
When forming 01, firstly, the first hole 102 is formed by a long-axis drill (not shown), and then the first hole 10 is formed.
A second long hole 103 opening to the first hole 102 is formed by cutting a long axis drill in a direction orthogonal to 2. Therefore,
As shown in FIG. 7A, the first hole 102 and the second hole 1
At the intersection 104 with 03, a burr 105 is generated at the opening portion of the second hole 103 which serves as a cutout exit of the long-axis drill.

To remove the burr 105, a deburring tool 106 such as a drill is inserted into the first hole 102 in the direction of arrow C in FIG. 7 (A), and as shown in FIG. 7 (B), the burr is removed. Burr 105 on the front side in the insertion direction of the removal tool 106
There is a case where a is bent in the second hole 103 and cannot be removed. As a countermeasure against this, as shown in FIG. 7C, the pin 107 is inserted into the second hole 103 to close the second hole 103, and the burr 10 is removed.
As shown in FIG. 7D, the deburring tool 106 is inserted into the first hole 102 to remove the burr while preventing the 5a from entering the second hole 103.

[0004]

However, in the case of the above-mentioned prior art, the deburring tool 106 must be inserted into the first hole 102 with the pin 107 inserted into the second hole 103. In addition, the intersection 10 is provided in the oil hole 101.
When there are a plurality of pins 4, the pins 107 must be inserted and removed with a deburring tool at each position.
Therefore, the number of man-hours required is large, and it is difficult to improve the productivity of products.

Further, in the above apparatus, the pin 107 and the deburring tool 106 are inserted into the respective holes and the second hole 1
It is necessary to accurately arrange the pin 107 at a position that closes 03 and then move the deburring tool 106 to remove the burr 105. Therefore, the structure and control of the device are complicated, and it is difficult to provide the device at low cost.

The present invention has been made in view of the above points, and an object thereof is to provide a deburring device capable of easily removing burrs in a hole with a simple structure.

[0007]

According to the invention of a deburring device as set forth in claim 1 for solving the above-mentioned problems, a deburring tool having a grinding blade or a cutting blade at the tip of a rod-shaped member is provided in a hole portion of a workpiece. In the deburring device for inserting and rotating the tip side of the deburring tool eccentrically to grind or remove the burr in the hole, the main body driven to rotate by the rotary drive device and the tiltable support on the main body. The holder is basically a holder that holds the base end of the deburring tool and can be tilted from a basic posture in which the deburring tool extends coaxially with the rotation center axis of the main body A basic posture state urging means for urging the posture state; a swing arm for supporting the base end on the outer peripheral portion of the main body and swinging the tip end in a direction away from the center axis of rotation by centrifugal force due to rotation of the main body; Moving arm and ho Characterized by having a a holder tilting means for tilting the holder in the inclined posture in accordance with the swinging of the interposed swing arm between the da.

According to the deburring device of the first aspect,
The swing arm swings in the direction in which the tip is separated from the center axis of rotation by the centrifugal force generated by the rotation of the main body. The holder tilting means tilts the holder from the basic posture state to the tilted posture state according to the swing of the swing arm. Therefore, the deburring tool is inclined with respect to the rotation center axis line, and the tip side rotates eccentrically from the rotation center axis line. As a result, the grinding blade or the cutting blade of the deburring tool can be turned inside the hole of the workpiece to grind or remove the burr inside the hole.

When the holder is not rotated, the attitude of the holder is restricted by the basic attitude urging means to the basic attitude in which the deburring tool extends on the center axis of rotation. It is easy to insert into the workpiece, and it is possible to prevent the grinding blade or the cutting blade from coming into contact with other parts of the workpiece during insertion or withdrawal.

Since the swing arm is swingably supported on the outer peripheral portion of the main body, a large centrifugal force can be generated with a small weight, and the holder can be tilted with a larger force. Therefore, the grinding blade or the cutting blade of the deburring tool can be pressed against the work piece with a strong pressing force, which makes the deburring work quick and easy, and makes the deburring device lightweight and compact. it can.

According to a second aspect of the present invention, in the deburring device according to the first aspect, the holder is coaxially rotatably supported by the main body, the holder and the main body are integrally rotatably coupled, and the holder and It is characterized by having a clutch means for releasing the coupling between the holder and the main body when a load greater than a set value acts on the main body.

According to the second aspect of the present invention, a load equal to or more than a set value is set between the holder and the main body due to the fact that the grinding blade or the cutting blade is caught in the workpiece during grinding or cutting with the deburring tool. When the action is applied, the coupling between the holder and the main body is released by the clutch means, the main body is rotated relative to the holder, the excessive load on the deburring tool is suppressed, and breakage and deformation are prevented. .

According to a third aspect of the present invention, in the deburring device according to the second aspect, the main body has a support hole extending along the rotation center axis line, and the holder extends in the support hole. The holder tilting means has a cylindrical shape and is movably supported in a through hole penetrating the main body in a direction intersecting the central axis of rotation. One end contacts the swing arm and the other end presses the holder. It is characterized by having a tilting pin.

A third aspect of the present invention concretely shows the configuration of the second aspect of the invention. According to the third aspect, since the main body has a cylindrical shape, the rotation center axis is the center of rotation. Easy to rotate as. Further, since the holder has a cylindrical shape that can be inserted into the support hole, it can be easily and coaxially supported in the support hole.
Further, the holder tilting means can move the tilting pin by the swinging of the swinging arm, and by the movement of the tilting pin, the holder can be pushed and tilted in the direction intersecting the rotation center axis line.

According to a fourth aspect of the present invention, in the deburring device according to the third aspect, a collar having an inner diameter hole portion which is arranged in the support hole and allows the holder to be loosely fitted in the support hole, the tilting pin and the holder. And a pressing pad interposed between the pressing pad and the holder, and the tilting pin presses the pressing pad against the holder to tilt the holder.

According to a fourth aspect of the present invention, the invention according to the third aspect is further embodied. According to this, the swing arm is swung by the rotation of the main body, and the swing arm is swung. The holder can be tilted by moving the tilting pin and pressing the pressing pad against the holder. Therefore,
The holder and the main body can be rotated together, and if a load greater than the set value occurs between the holder and the main body, slip occurs between the pressing pad and the holder, and the main body It can be rotated relatively.

Then, for example, when the grinding blade or the cutting blade of the deburring tool is caught in the workpiece and the rotation of the deburring tool is stopped, only the main body is rotated, and the main body is rotated by a desired amount. This makes it possible to tilt the holder in different directions and positively release the engagement of the grinding blade or the cutting blade with the workpiece.

According to a fifth aspect of the present invention, in the deburring device according to the third aspect, the abutment end surface formed on the tilting pin and the abutment end surface of the outer peripheral portion of the holder are formed at positions facing each other. It has a smooth surface, and the abutting end surface of the tilting pin presses the smooth surface of the holder to tilt the holder.

According to a fifth aspect of the present invention, the invention according to the third aspect is further embodied. According to this, the swing arm is swung by the rotation of the main body, and the swing arm is swung. The holder can be tilted by moving the tilting pin to bring the contact end surface of the tilting pin into contact with the smooth surface of the holder and pressing the same.

Then, for example, when the grinding blade or cutting blade of the deburring tool bites into the workpiece and the rotation of the deburring tool is stopped, the contact end surface of the tilting pin moves from the smooth surface of the holder to the outer peripheral surface. The main body and the holder can be disconnected from each other by riding on. Then, by rotating only the main body and rotating the main body by a predetermined amount, the holder can be tilted in different directions and the engagement of the grinding blade or the cutting blade with the workpiece can be positively released.

According to a sixth aspect of the present invention, in the deburring device according to any of the third to fifth aspects, the basic posture state urging means is orthogonal to the central axis of rotation formed in the support hole of the main body. And the basic posture state regulating surface that is formed on the holder and that is in contact with the orthogonal plane to regulate the holder to the basic posture state, and the holder in the direction in which the basic posture state regulating surface is in contact with the orthogonal plane. And a spring for urging.

According to the sixth aspect of the present invention, the holder is biased so that the basic posture regulating surface is brought into contact with the orthogonal plane to regulate the posture of the holder to the basic posture. It can be arranged easily and surely so as to extend coaxially with the central axis of rotation of the main body. Therefore, it prevents the tip of the deburring tool from wobbling during non-rotation, and the grinding blade or cutting blade contacts the non-processed part of the work piece when inserting it into the hole part of the work piece and when extracting it from the hole part. Can be prevented.

According to a seventh aspect of the present invention, in the deburring device according to the sixth aspect, the holder has a collar portion on the outer periphery,
While forming a basic posture state regulation surface on the collar portion, the outer periphery of the collar portion is formed into a spherical curved surface, and the spherical curved surface of the collar portion is in contact with a support hole of the main body or a bearing fixedly mounted in the support hole, The holder is tilted with respect to the main body with a contact portion between the spherical curved surface of the portion and the support hole of the main body or a bearing fixedly provided in the support hole as a fulcrum.

According to the invention described in claim 7, since the outer periphery of the collar portion of the holder is formed into a spherical curved surface, when the holder is tilted, the spherical curved surface of the collar portion and the supporting hole or the supporting hole of the main body are fixed. The holder mounted with the deburring tool can be smoothly tilted with respect to the main body around the contact portion with the provided bearing as a fulcrum. In addition, since the basic posture state regulating surface is formed on the collar portion formed on the outer periphery of the holder, the holder can be reliably maintained in the basic posture state when rotation is stopped, and the fulcrum of the spherical portion of the collar portion when the holder tilts. By positioning, it is possible to always tilt with a fixed fulcrum.

According to an eighth aspect of the invention, in the deburring device according to the sixth aspect, the basic posture state urging means also serves as the clutch means.

According to the invention of claim 8, since the basic posture state urging means also serves as the clutch means, a plurality of functions of urging to the basic posture state and the clutch function can be achieved by the same member. It is possible to realize with a simple structure.

According to a ninth aspect of the present invention, in the deburring device according to the eighth aspect, the clutch means is provided on the basic posture state regulating surface of the collar portion and the main body side by the urging force of the spring to the collar portion of the holder. When the main body and the holder rotate integrally due to the frictional force at the contact portion with the orthogonal surface and the frictional force due to the pressing of the tilting pin, and the load more than the set value acts between the main body and the holder, the contact portion And the pressing portion of the holder caused by the tilting pin slides to release the coupling between the holder and the main body.

According to the invention of claim 9, the frictional force at the contact portion between the basic posture state regulation surface of the collar portion and the orthogonal surface on the main body side due to the urging force of the spring and the frictional force due to the pressing of the tilting pin are normally provided. In cooperation with, the main body and the holder can be surely rotated integrally. When a load greater than the set value is applied between the main body and the holder, the contact portion and the pressing portion of the holder by the tilting pin slip, so that the connection between the holder and the main body can be reliably released. it can.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram illustrating a deburring device according to the first embodiment, FIG. 2 is an explanatory diagram showing an enlarged main part of FIG. 1, and FIG. 3 is a line AA of FIG. FIG. 4 is a cross-sectional view taken from the direction of the arrow.

The deburring device 10 has a main body 11 having a substantially cylindrical shape which is rotated by a rotation driving device (not shown). A flat surface 11C is formed on a part of the outer peripheral portion of the main body 11 from the front end surface 11A to the rear end surface 11B, and a shank 12 is provided on the rear end surface 11B.
Then, in the main body 11, one end is opened to the front end face 11A and the rear end face 11 is formed along the rotation center axis line L of the main body 11.
A support hole 14 extending toward the B side and having a predetermined depth is provided. The support hole 14 has a large diameter hole portion 14a having a bearing bush 15 and a small diameter hole portion 14b continuous with the large diameter hole portion 14a and having a reduced diameter through a step.

A holder 20 is coaxially rotatable and tiltably supported in the support hole 14. Holder 20
Are the first and the first extending in the same direction as the main body 11 in the support hole 14.
Supporting holes between the second columnar portions 21A and 21B, the third columnar portion 22 which is continuous with the first columnar portion 21 and coaxially protrudes from the main body 11, and between the first columnar portion 21A and the third columnar portion 22. 14 has a disk-shaped brim portion 23 facing the bearing bush 15 fixed in the inner circumferential surface of the bearing bush 15. The brim portion 23 has an arcuate longitudinal section in line contact with the inner peripheral surface of the bearing bush 15. It has a spherical curved surface 23a and a basic posture state regulating surface 23b that regulates the posture state of the holder 20 by facing and contacting the orthogonal surface 16a of the cap 16.

On the front end face 11A of the main body 11, the cap 1
6 is provided. The cap 16 has a flat plate shape having a predetermined rigidity, an orthogonal surface 16 a facing the support hole 14 and extending orthogonal to the rotation center axis L, and the support hole 14.
It has a smaller diameter and an opening hole 16b that penetrates the cap 16 coaxially with the rotation center axis L. Between the opening hole 16b of the cap 16 and the third cylindrical portion 22 of the holder 20, an oil seal 2 formed in a ring shape with a V-shaped cross section.
4 is provided to prevent chips and coolant from entering the inside of the main body 11.

In the figure, reference numeral 1 is a deburring tool mounted on the deburring device 10. The deburring tool 1 includes a rod-shaped body 1a having a substantially same diameter and extending in a straight line, and a rod-shaped body 1
It has a spherical file 1b which is a grinding blade coaxially provided at the tip of a and having a diameter larger than the outer diameter of the rod-shaped body 1a.
Instead of the grinding blade, a cutting blade having a predetermined shape may be used. The deburring tool 1 is held by a holding means 30 provided on the holder 20 so as to extend coaxially with the holder 20. The holding means 30 is shown in FIG.
As shown in FIG. 3, an insertion hole portion 31 having one end opened to the end surface 22a of the third cylindrical portion 22 and having an inner diameter that allows the rod-shaped body 1a of the deburring tool 1 to be inserted and is coaxially bored, Hole 31
The protrusion amount adjusting screw 32 provided on the bottom of the deburring tool 1 for adjusting the amount of protrusion from the end surface 22a of the deburring tool 1, and the second cylindrical portion 22.
Has a fixing screw 33 that penetrates through in the radial direction and fixes the deburring tool 1 to the holder 20.

In the support hole 14, the first cylindrical portion 21
A ring-shaped pressing piece 41 that is inserted into A and abuts on the flange portion 23, and a spring 42 that urges the pressing piece 41 in the direction of pressing the flange portion 23 are provided, and the basic posture state regulation surface 23b and Together with the orthogonal surface 16a, the basic posture state urging means 40 is configured. The basic posture state urging means 40 regulates the posture state of the holder 20 to the basic posture state by urging the spring 42 to bring the basic posture state regulating surface 23b of the collar portion 23 into contact with the orthogonal surface 16a of the cap 16. However, the deburring tool 1 is prevented from wobbling.

On the other hand, the flat surface 11C of the main body 11 has a structure shown in FIG.
As shown in, a swing arm 50 that swings by the centrifugal force by the rotation of the main body 11 is supported. The swing arm 50 is
A pivotal support portion 51 axially supported between a pair of leg portions 11D erected on the flat surface 11C, and a weight arm having a weight 53 at a tip 52 extending axially from the pivotal support portion 51 along the flat surface 11C. It has a part 54 and a drive arm part 55 extending in a direction away from the weight arm part 54 with the pivotal support part 51 interposed therebetween, and between the tip 56 of the drive arm part 55 and the main body 11. There is provided a return spring 57 that urges the drive arm portion 55 and the flat surface 11C in the direction in which they are separated from each other.

Therefore, the swing arm 50 swings in the direction in which the weight 53 is separated from the rotation center axis L by the centrifugal force when the main body 11 is rotated at a speed equal to or higher than the set rotation speed, and is below the set rotation speed. When it is rotated or stopped, it returns to its original position.

Further, the flat surface 11C of the main body 11 has a through hole 18 penetrating through the support hole 14 in the radial direction of the main body 11.
Has been drilled. The through-hole 18 has one end open at a position substantially intermediate between the tip 56 of the drive arm portion 55 and the pivot support portion 51 and facing the drive arm portion 55, and the other end is opened at the small-diameter hole portion 14 b of the support hole 14. Is formed.

A tilting pin 60 is provided in the through hole 18 as a holder tilting means for tilting the holder 20 according to the swing of the swing arm 50. The tilt pin 60 is
As shown in FIG. 3, the diameter that is supported in the through hole 18 so as to be movable in the axial direction, and the drive arm portion 55 of the swing arm 50.
Has a length such that one end abuts on the other end and the other end presses the second columnar portion 21B through a pressing pad 73 described later. Therefore, when the swing arm 50 swings and the drive arm portion 55 approaches the flat surface 11C, the tilting pin 60 moves in the through hole 18 toward the rotation center axis L, and the tilting pin 60 moves through the pressing pad 73. 2 The cylindrical portion 21B is pressed in the radial direction to move the holder 2
The deburring tool 1 can be tilted in a tilted posture in which the deburring tool 1 is tilted with respect to the rotation center axis L.

Here, since the outer periphery of the collar portion 23 of the holder 20 is formed into the spherical curved surface 23a, the spherical curved surface 23a of the collar portion 23 and the support hole 14 of the main body 11 when the holder 20 tilts.
Using the contact point with the bearing bush fixed inside as a fulcrum,
The holder 20 equipped with the deburring tool 1 can be smoothly tilted with respect to the main body 11.

A cylindrical collar 71 having an inner diameter hole 71b into which the second cylindrical portion 21B can be loosely fitted is provided inside the small diameter hole 14b. Inner hole 7 of collar 71
1b forms a predetermined clearance D between the holder 20 and the outer peripheral surface 21a of the second cylindrical portion 21B when the holder 20 is in the basic posture state, and when the holder 20 tilts by a predetermined angle and is in the tilted posture state. It has an inner diameter that abuts the two columnar portions 21B. Further, the collar 71 is provided with a cutout portion 72 formed by cutting out a portion facing the through hole 18 in the radial direction of the rotation center axis L. This notch 7
A pressing pad 73 is mounted inside the unit 2 so as to be able to come into contact with and separate from the second columnar portion 21B.

The pressing pad 73 is interposed between the tilting pin 60 and the second cylindrical portion 21B, and the second cylindrical portion 21B is pressed by the pressing of the tilting pin 60, and is defined by the clearance D from the collar 71. The spherical surface 23a of the collar 23 and the bearing bush 15 of the main body 11 within
The holder 20 is tilted about the line of contact with the holder.

A spring 42 is interposed between the pressing piece 41 and the collar 71 fitted in the small-diameter hole portion 14b of the main body 11, and the flange portion of the holder 20 is inserted through the pressing piece 41. Due to the urging force of the spring 42 to 23, a frictional force is generated at the contact portion between the basic posture state regulating surface 23b of the collar portion 23 and the orthogonal surface 16a of the cap 16 fixed to the main body 11 side. And this friction force and the tilting pin 60
The second cylindrical portion 21B of the holder 20 is pressed by the main body 1
The rotation of the holder 20 with respect to the main body 11 is restricted by the cooperation of the frictional force due to being sandwiched between the collar 71 fitted in 1 and the pressing pad 73, and the main body 11 and the holder 20 are integrally rotated. be able to.

When a load greater than a set value is applied between the main body 11 and the holder 20, the second cylindrical portion 21B of the holder 20 and the inner diameter hole portion 71b of the collar 71 inserted into the main body 11 side. Between the pressing pad 73 and the holder 2
0 between the collar portion 23, the cap 16 on the main body 11 side, and the bearing bush 15 causes slippage between the holder 20 and the main body 1.
1 can be rotated relatively. Therefore, the main body 11
The main body 11 and the holder 20 are integrally rotatably coupled by the collar 71, the spring 42, the pressing piece 41, and the pressing pad 73 that are fitted to the side, and the holder 2
Clutch means is configured to release the engagement when a load equal to or greater than the set value is applied to 0.

Next, the deburring apparatus 10 having the above structure
The usage method, operation, and effect thereof will be described below.

FIG. 4 is an explanatory view exemplifying a usage state of the deburring device 10, and deburring is performed in the oil hole of the crankshaft 2 of the engine. In the figure, the crankshaft 2 is shown in which the journal portion 3 is shown in a cross section orthogonal to the center of rotation. The journal portion 3 has a first hole 4 penetrating perpendicularly to the rotation center of the crankshaft 2.
And the second hole 5 having one end opened to the outer peripheral surface 3a of the journal portion 3 and the other end communicating with the first hole 4, an oil hole 6 intersecting in a substantially T shape is provided. This oil hole 6
Is a long hole drill (not shown) is used to drill the first hole 4,
Since it is formed by forming the second hole 5 next, a burr 8 is formed at the intersection 7 so as to project into the first hole 4. The crankshaft 2 having the above configuration is held by a work holding device (not shown).

The deburring device 10 is mounted on a rotary driving device (not shown), is moved in a direction approaching the crankshaft 2, and the tip of the deburring tool 1 is inserted into the second hole 5. Is inserted. At that time, since the posture state of the holder 20 is regulated to the basic posture state by the basic posture state urging means 40, the rotation center axis line L of the main body 11 is aligned with the center of the second hole 5 and the crankshaft. Two
The tip of the deburring tool 1 can be easily inserted into the second hole 5 only by moving the deburring device 10 in the direction of approaching. Further, since the tip of the deburring tool 1 is prevented from wobbling, it is possible to prevent the deburring tool 1 from coming into contact with the outer peripheral surface 3a of the journal portion 3 when the deburring tool 1 is inserted into the oil hole 6.

By inserting the deburring tool 1, a spherical file 1
When b is arranged at the intersection 7, the rotary drive is started by the rotary drive means, and the main body 11 is rotated about the rotation center axis L. When the main body 11 is rotated, the swing arm 5
0 swings around the pivot 51 due to the centrifugal force of the weight 53, the weight arm 54 is separated from the flat surface 11C, and the drive arm 55 is flat on the flat surface 11C of the main body 11.
Approach.

When the drive arm 55 approaches the flat surface 11C, the tilting pin 60 is moved toward the center axis L of rotation and presses the second cylindrical portion 21B of the holder 20 against the pressing pad 7.
Press through 3. As a result, the second columnar portion 21B of the holder 20 is radially moved by the amount of the clearance D against the urging force of the spring 42 of the basic posture state urging means 40, and the pressing pad 73 and the inner diameter hole portion 71b of the collar 71 are moved. Hold it between.

Therefore, the holder 20 is tilted from the basic posture state to the inclined posture state about the spherical curved surface 23a of the collar portion 23 and is rotated integrally with the main body 11. This allows
Spherical file 1b provided at the tip of the deburring tool 1
Can be eccentrically rotated so as to draw a circular locus about the rotation center axis L, and the burr 8 of the intersection 7 is ground by appropriately moving in the front-rear direction (cutting when a cutting blade is used. ) Can be removed.

Further, for example, when a rotational load exceeding the set value is generated between the holder 20 and the main body 11 due to the biting of the spherical file 1b, the collar portion 23 of the holder 20 and the main body 11 are caused.
Between the side cap 16 and the bearing bush 15, and
Sliding occurs between the second cylindrical portion 21B of the holder 20, the inner diameter hole portion 71b of the collar 71 fitted on the body 11 side, and the pressing pad 73, and the body 11 is rotated relative to the holder 20. You can Therefore, it is possible to prevent an excessive load from being applied to the deburring tool 1 and prevent breakage or deformation of the deburring tool 1.

Further, when the rotation of the holder 20 is stopped due to the biting, the main body 11 rotates for a desired amount, and the tilting pin 60 presses the outer peripheral surface 21a from different directions to positively set the biting state. Can be canceled automatically. When the spherical file 1b is released from the biting state, the holder 20 has a basic posture control surface 23b of the flange portion 23 and the main body of the collar portion 23 due to the biasing force of the spring 42 to the collar portion 23 of the holder 20 via the pressing piece 41. The second cylindrical portion 21B of the holder 20 due to the frictional force with the orthogonal surface 16a of the cap 16 fixed to the 11 side and the pressing of the tilting pin 60.
Is again sandwiched between the collar 71 fitted into the main body 11 and the pressing pad 73, so that the main body 1 is restored by the frictional force.
1 is automatically coupled and is rotated integrally with the main body 11 to restart the eccentric rotation of the spherical file 1b. Therefore, even if the rotation of the deburring tool 1 is stopped due to the biting of the spherical file 1b, the grinding operation can be continued. Therefore, the cycle time of the deburring work can be shortened and the productivity of the product can be improved.

When the grinding work of the burr 8 is completed, the rotation by the rotation driving device is stopped. When the rotation is stopped, the centrifugal force of the weight 53 disappears, and the swing arm 50 swings.
The tilting pin 6 is returned to its original position by the urging force of the return spring 57.
The force pressing 0 disappears. When this pressing force disappears, the holder 20 is restricted to the basic posture state by the biasing force of the spring 42 of the basic posture state biasing means 40.

When the holder 20 is restricted to the basic posture state, the deburring device 10 is moved and the deburring tool 1 is withdrawn from the second hole 5. Here, by retracting the holder 20 in a state in which it is restricted to the basic posture state, the tip of the deburring tool 1 can be pulled out without contact with the inner wall surface of the oil hole 6, and the tip of the deburring tool 1 can remove oil. It is possible to prevent the deburring tool 1 from swinging and coming into contact with the outer peripheral surface 3a of the journal portion 3 or the like when the inside of the hole 6 is damaged or when the oil is removed from the oil hole 6. When the deburring tool 1 is withdrawn from the oil hole 6, the deburring process by the deburring device 10 is completed.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
The embodiment will be described below with reference to FIGS. 5 and 6. FIG. 5 is a schematic diagram illustrating a deburring device 10 according to the second embodiment, and FIG. 6 is a BB line in FIG.
It is sectional drawing shown from the arrow direction by the line. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The feature of this embodiment is that, unlike the first embodiment, the pressing pad 3 is eliminated, and the second cylindrical portion 21B of the holder 20 is directly connected by the tilting pin 60.
Is configured to be pressed. In this embodiment,
The collar 71 is provided with an insertion portion 75 through which the tilting pin 60 is inserted, and the second cylindrical portion 21B is provided with a smooth surface 25 that faces the contact end surface 61 of the tilting pin 60 and is in contact therewith.

Therefore, the swing arm 50 swings by the rotation of the main body 11, and the tilting pin 60 moves in the direction approaching the rotation center axis L in accordance with the swinging of the swinging arm 50, and the tilting pin 60 moves. The contact end surface 61 is the smooth surface 2 of the second cylindrical portion 21B.
5, the holder 20 can be coupled to the main body 11 and the second columnar portion 21B can be moved in the radial direction by the amount of the clearance D and tilted to the inclined posture state. Therefore, similarly to the first embodiment, the deburring tool 1 is tilted with respect to the rotation center axis line L, and the spherical file 1b.
Can be eccentrically rotated to grind and remove the burr 8 at the intersection 7.

Then, for example, when a load larger than a set value is generated between the holder 20 and the main body 11 due to the biting of the spherical file 1b, the contact end surface 61 of the tilting pin 60 moves from the smooth surface 25 to the outer peripheral surface 21a. The main body 11 and the holder 20 can be disconnected from each other by riding on the.
Therefore, it is possible to prevent an excessive load from being applied to the deburring tool 1 and prevent breakage or bending of the deburring tool 1. Then, the main body 11 rotates for a desired amount, and the tilting pin 60 presses the outer peripheral surface 21a from different directions, whereby the engaged state can be positively released.

As in the first embodiment, when the spherical file 1b is released from the engaged state, the holder 20 and the main body 11 are automatically coupled and integrally rotated again, so that the spherical file 1b is eccentric. The rotation can be restarted.

According to the deburring device 10 described above, the burr 8 formed at the intersection 7 of the oil hole 6 can be easily ground and removed by a simple structure without requiring any complicated control. Further, according to the above configuration, the weight 53
Since the swing arm 50 having the above is provided on the outer peripheral portion of the main body 11, a larger centrifugal force can be generated with a small weight. Further, the distance L1 from the pivot point of the pivot portion 51 of the swing arm 50 to the center of gravity of the weight 53, and the contact point between the pivot point of the pivot portion 51 of the swing arm 50 and the tilt pin 60 of the drive arm portion 55. The ratio of the distance L2, the so-called lever ratio L1 / L2, increases the centrifugal overload of the weight 53, so that the spherical file 1b of the deburring tool 1 can be pressed with a stronger pressing force, and the burr 8 is ground and removed quickly and easily. be able to. Therefore, the weight of the deburring device 10 is reduced,
And it can be made compact.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the arrangement position of the collar portion 23 in the holder 20, the support position of the swing arm 50, the position of the weight 53, and the like may be appropriately changed. Further, the bearing bush 15 is omitted, and the spherical curved surface 23a of the collar portion 23 is
You may make it contact | connect the peripheral wall of the support hole 14 of the main body 11. However, in this case, it is desirable that the contact portion on the peripheral wall of the support hole 14 be subjected to hardening treatment and low friction treatment.

In each of the above embodiments, the holder 2
Although 0 is supported by the main body 11 so as to be coaxially rotatable and coupled to each other by the clutch means, the holder 20 and the main body 11 may be always rotated integrally without being provided with the clutch means. Good.

[0062]

As described above, according to the deburring apparatus of the present invention, the swinging arm is swung by the centrifugal force due to the rotation of the main body, and the holder tilting means is moved in the direction intersecting the rotation center axis line. Move it to tilt the holder held in the basic posture to the tilted posture, tilt the deburring tool, and swivel the grinding or cutting blade of the deburring tool. Burrs formed in the part can be easily ground or cut away. In addition, since the deburring tool is biased to the basic posture when it is not rotating, it is easy to insert it into the hole of the deburring tool. It is possible to prevent contact with the part of.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating a deburring device according to a first embodiment.

FIG. 2 is an explanatory diagram showing an enlarged main part of FIG.

FIG. 3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an explanatory diagram illustrating a usage state of the deburring device.

FIG. 5 is a schematic diagram illustrating a deburring device according to a second embodiment.

6 is a cross-sectional view taken along the line BB of FIG. 5 and seen from the direction of the arrow.

FIG. 7 is a diagram illustrating a conventional technique.

[Explanation of symbols]

1 Deburring tool 2 crankshaft 3 journal section 4 first hole 5 second hole 6 oil holes 7 intersection 8 Bali 10 Deburring device 11 body 20 holder 40 Basic posture state urging means 50 swing arm 60 Tilt pin (holder tilt means)

Claims (9)

[Claims] 1. A deburring tool having a grinding blade or a cutting blade at the tip of a rod-shaped member is inserted into a hole portion of a workpiece, and the tip side of the deburring tool is eccentrically rotated to remove burrs in the hole portion. In a deburring device for grinding or cutting and removing, a main body that is rotationally driven by a rotary drive device, and a tiltably supported by the main body, the base end of the deburring tool is held, and the deburring tool rotates the main body. A holder that can be tilted from a basic posture state that extends coaxially with the central axis to a tilted posture that tilts with respect to the rotation center axis; and a basic posture state biasing means that biases the holder to the basic posture state. A swinging arm having a base end supported on an outer peripheral portion of the main body and swinging in a direction in which a distal end thereof is separated from the rotation center axis line by a centrifugal force generated by rotation of the main body; and between the swinging arm and the holder. Intervened Deburring device, characterized in that it comprises a holder tilting means for tilting the holder in the inclined posture corresponding to a swing of KiYurado arm, the. 2. The holder is coaxially and rotatably supported by the main body, the holder and the main body are integrally rotatably coupled, and a load equal to or more than a set value acts between the holder and the main body. A clutch means is provided for releasing the coupling between the holder and the main body by doing so.
The deburring device described in. 3. The main body has a support hole extending along the rotation center axis, the holder has a cylindrical shape extending into the support hole, and the holder tilting means includes: A tilting pin movably supported in a through hole penetrating the main body in a direction intersecting with the rotation center axis, and having one end abutting against the swing arm and the other end pressing the holder. The deburring device according to claim 2. 4. A collar, which is disposed in the support hole and has an inner diameter hole portion capable of loosely fitting the holder in the support hole, and a pressing pad interposed between the tilting pin and the holder, The deburring device according to claim 3, wherein the pressing pad is pressed against the holder by the pressing by the tilting pin to tilt the holder. 5. An abutting end surface formed on the tilting pin, and a smooth surface formed on a portion of the outer peripheral portion of the holder facing the abutting end surface, wherein the abutting end surface of the tilting pin is formed. The deburring device according to claim 3, wherein the holder is tilted by pressing a smooth surface of the holder. 6. The basic posture state urging means includes an orthogonal surface formed in the support hole of the main body, the orthogonal surface extending orthogonally to the rotation center axis, and the holder formed on the orthogonal surface. A basic posture state regulating surface that regulates the holder to the basic posture state by a contact surface; and a spring that urges the holder in a direction to bring the basic posture state regulating surface into contact with the orthogonal surface. The deburring device according to any one of claims 3 to 5. 7. The holder has a collar portion on the outer circumference thereof, the basic posture state regulating surface is formed on the collar portion, and the outer circumference of the collar portion is formed into a spherical curved surface. The holder is in contact with the main body in contact with the support hole of the main body or the bearing fixed to the support hole, and the contact point between the spherical curved surface of the flange and the support hole of the main body or the bearing fixed to the support hole is a fulcrum. The deburring device according to claim 6, wherein the deburring device is tilted. 8. The basic posture state urging means also serves as the clutch means.
The deburring device described in. 9. The clutch means comprises a frictional force at a contact portion between a basic posture state regulation surface of the collar portion and the orthogonal surface on the main body side due to a biasing force of the spring to the collar portion of the holder, and the tilting movement. By the frictional force due to the pressing of the pin,
When the main body and the holder are integrally rotated, and when a load equal to or more than a set value is applied between the main body and the holder, the contact portion and the pressing portion of the holder by the tilting pin may slip. The deburring device according to claim 8, wherein the holder and the main body are uncoupled from each other.