JP3078970B2 - Deburring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring apparatus for removing burrs adhering to various works, and more particularly to a deburring apparatus capable of removing burrs without scattering.

[0002]

2. Description of the Related Art Conventionally, removal of cast burrs adhering to a relatively large article or burrs generated during cutting is performed by pressing a burr portion of the article against a grinding wheel or a wire brush rotating at a high speed. Have been.

[0003]

As described above, the method of removing a burr by pressing a burr portion of an article against a grinding wheel, a wire brush or the like rotating at a high speed has a problem that the burr is scattered around. At the same time, since the rotation of the wire brush and the like is in one direction, when burrs are formed on both sides of the article such as a cast burr, the burrs on both sides cannot be removed at the same time, and There is a problem that the deburring operation is inefficient, for example, the direction needs to be reversed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and the invention according to claim 1 has a rotating shaft that is rotated by a high-speed motor.
An eccentric hole member having an eccentric hole whose axis is eccentric with respect to the axis of the rotating shaft is integrally provided, and a radial direction protrudingly provided on a stationary shaft rotatably supported in the eccentric hole is provided. Pin is provided between a pair of pinch rollers provided at a predetermined position to regulate the rotation of the stationary shaft with respect to the rotating shaft, and a tool holder supporting a deburring tool is relatively positioned with respect to the stationary shaft. The tool holder is rotatably supported, and the tool holder is linked to a low-speed rotation motor.

According to a second aspect of the present invention, an eccentric hole member having an eccentric hole whose axis is eccentric with respect to the axis of the rotation shaft is integrally formed on a rotation shaft rotated by a motor for high-speed rotation. A tool holder supporting a deburring tool is mounted on a stationary shaft rotatably supported by the eccentric hole, and the stationary shaft or the tool holder is provided in conjunction with a low-speed rotation motor. Along with, a stationary device capable of fixing the stationary shaft or the tool holder in a non-rotatable state is provided,
The fixing device has a switch for cutting off the power of the low-speed rotation motor during the fixing operation.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a deburring apparatus 1 includes an eccentric rotation mechanism 5 for imparting a small eccentric rotation to an appropriate deburring tool 3 such as a grinding wheel or a wire brush.
The deburring tool 3 is rotated at a low speed (for example, 0 to 60).
(rpm).

More specifically, a drive motor M2 for high-speed rotation (for example, 1000 rpm or more) is mounted on the base 7 of the deburring device 1, and an output shaft (rotation shaft) 9 of the drive motor M2 has A sleeve 11 having a flange portion 11F at the tip is integrally attached. The above sleeve 1
1 is rotatably supported by a bearing case 13 via a plurality of bearings 15. The bearing case 13 includes a pin 17 fixed to the bearing case 13.
The rotation is regulated by movably engaging a roller 19 provided at the end of the base with a slot 21 formed in the base 7.

An eccentric plate 23 as an eccentric hole member is attached to the distal end side of the sleeve 11 via a plurality of bolts 25, and an eccentric portion 23E provided to protrude from the eccentric plate 23.
Is fitted in an engagement hole 11H formed so as to coincide with the axis of the sleeve 11.

The axis of the eccentric portion 23E of the eccentric plate 23 is slightly eccentric with respect to the axis of the sleeve 11. Therefore, the hole formed in the axis portion of the eccentric plate 23 is a hole eccentric with respect to the axis of the rotating shaft 9 and the sleeve 11, and forms an eccentric hole 23H. The base of the stationary shaft 29 is rotatably supported by the eccentric hole 23H of the eccentric plate 23 via a plurality of bearings 27.

The stationary shaft 29 is a shaft having a flange portion 29F near the center in the longitudinal direction, and is fixed in a radial direction (shaft of the stationary shaft 29) so as to protrude from the outer peripheral portion of the flange portion 29F. Pin 31 in a direction perpendicular to the heart)
Are pinched from both sides by a pair of pinch rollers 33 attached to the bearing case 13 as a fixed portion whose rotation is restricted, and the rotation of the stationary shaft 29 around the axis is restricted. Although not shown in detail, each of the pinch rollers 33 is rotatably supported by an eccentric portion of an eccentric shaft attached to the bearing case 13 so that there is no clearance between the pinch roller 33 and the pin 31. The pin 31 can be pinched.

More specifically, a pair of pinch rollers 33
1 is arranged in a direction perpendicular to the plane of FIG. 1 and holds the pin 31 from both sides so that the stationary shaft 29 does not rotate around the axis. And
Each of the pinch rollers 33 is rotatably supported by an eccentric portion of a pair of eccentric shafts (the reference numerals are omitted in FIG. 1) in which the axis of the stationary shaft 29 is parallel to the axis. Therefore, when the eccentric shaft is rotated around the axis, the eccentric portion of the eccentric shaft is slightly displaced in a direction approaching and moving away from the pin 31, and a pair of pinch rollers supported by the eccentric portion of the eccentric shaft The pin 33 allows the pin 31 to be clamped without any clearance.

A pulley 37 is rotatably supported on the distal end side of the stationary shaft 29 via a plurality of bearings 35. A belt 39 wrapped around the pulley 37 is wrapped around an output pulley 41 of the motor M1. Turned. A tool holder 43 is integrally mounted on the pulley 37 by bolts or the like. A shaft portion 3S of the deburring tool 3 is fitted into a mounting hole 43H of the tool holder 43, and a plurality of mounting bolts 45 are used. Tightened and fixed.

In the above configuration, the driving motor M
When the output shaft 9 is rotated at a high speed, the sleeve 11 and the eccentric plate 23 are rotated at a high speed. When the eccentric plate 23 is rotated, the axis of the eccentric plate 23 is slightly eccentric with respect to the axis of the sleeve 11, so that the stationary shaft 29 is eccentrically rotated around the axis of the sleeve 11 with a small radius. (Orbit).

The stationary shaft 29 is restricted from rotating around the axis of the stationary shaft 29 because the pin 31 provided on the flange portion 29F is sandwiched between a pair of pinch rollers 33. The rotation about its own axis is stationary.

When the stationary shaft 29 is eccentrically rotated about the axis of the sleeve 11 as described above, the deburring tool 3 is also eccentrically rotated. When the motor M1 is further driven, the deburring tool 3 is rotated (rotated) at a low speed.

As described above, when the deburring tool 3 is eccentrically rotating (revolving) at a small radius and at a high speed, when a portion of the work W to which the burr is adhered is pressed against the deburring tool 3, The burrs will be removed.

That is, for example, a case where a wire brush is used as the deburring tool 3 will be described. The wire 3W of the wire brush eccentrically rotates with a small radius as shown in FIG. At this time, the wire 3W repeatedly contacts and separates from the attachment surface WF of the work W to which the burr B is attached, and when the wire 3W contacts the attachment surface WF, the attachment surface In a mode in which the wire 3W moves (vibrates) minutely along the WF, the burr B is removed from the attachment surface.

As can be understood from FIG.
The burr B is removed entirely regardless of the direction of F.

When the burr B is removed as described above,
Since the burr B is removed by the eccentric movement (small vibration) of the burr removing tool 3 having a small diameter, the burr B after removal is removed.
Is not scattered around. Also,
When the deburring tool 3 is rotated at a low speed by the motor M1, only one part of the deburring tool 3 acts on the workpiece W, and the entire deburring tool 3 acts on the workpiece W. Wear is uniform.

In the above-mentioned embodiment, the case where the wire type brush in which the wire is implanted on one side surface of the disk is exemplified as the deburring tool, but the deburring tool is, for example, a disk-shaped wire. Various forms of deburring tools may be used, such as brushes, grinding wheels and buffs.

FIG. 3 shows a second embodiment of the present invention. In the second embodiment, a rotating shaft 57 is rotatably supported on a housing 53 mounted on an upper portion of a base 51 via a plurality of bearings 55.
7 has a pulley 61 provided on a high-speed rotation motor M2 mounted on the lower surface of the base 51.
Is wound around the belt 63.

The other end of the rotating shaft 57 has a rotating shaft 57
An eccentric hole member 65 provided with an eccentric hole 65H whose axis is slightly eccentric with respect to the axis of is provided. In the eccentric hole 65H of the eccentric hole member 65, a plurality of bearings 6 are provided.
A stationary shaft 69 is rotatably supported via the base 7. A tool holder 73 having a chuck device 71 with which the deburring tool 3 can be detached and replaced is provided at the end of the stationary shaft 69.
Is attached integrally.

Further, on the outer peripheral surface of the eccentric hole member 65,
A pulley 77 is rotatably supported via a plurality of bearings 75. The pulley 77 is provided with a motor M1 for low-speed rotation mounted on the lower surface of the base 51 adjacent to the motor M2 for high-speed rotation. Belt 8 around the pulley 79
One is hanging.

A cylindrical casing 83 is integrally mounted on one side surface of the pulley 77. A pair of pinch rollers 85 provided in the casing 83 is located between the pinch rollers 85 with respect to the axis of the stationary shaft 69. A radial pin 87 protruding and mounted orthogonally is clamped.

More specifically, the pair of pinch rollers 8
5 is arranged in a direction perpendicular to the plane of FIG. 3 and pinches the pin 87 from both sides so as to regulate the rotation of the stationary shaft 69 against the rotation of the rotating shaft 57. Is what it is.

With the above configuration, the motor M1 for low-speed rotation
When the pulley 77 is rotated by the driving of the stationary shaft 6 via the casing 83, the pinch roller 85, and the pin 87,
9 will be rotated. When the stationary shaft 69 is rotated, the deburring tool 3 supported by the tool holder 73 is rotated.
Are rotated together.

A ring member 89 is integrally attached to the other side surface of the pulley 77, and a plurality of locking holes 89H are provided in the ring member 89 at an appropriate pitch in the circumferential direction. A fixing device 93 that can fix the pulley 77 in a non-rotatable state is attached to a cover 91 that is attached to the base 51 so as to cover the pulley 77 and the like.

More specifically, as shown in FIG. 4, the fixing device 93 includes a bracket 95 attached to a cover 91, and the pin guide 9 fixed to the bracket 95.
7, a locking pin 9 which penetrates the cover 91 and has a distal end portion 99E detachably engageable with a locking hole 89H of the ring member 89.
9 is slidably supported.

The locking pin 99 is constantly urged in the direction of the ring member 89 by a spring 101 elastically mounted between a step 99S formed on the locking pin 99 and the pin guide 97. A stopper pin 103 is fixed to the locking pin 99 so as to be detachable from a concave portion 97C formed in the pin guide 97.

At an appropriate position of the bracket 95, it is detected that the stopper pin 103 is engaged with the concave portion 97C and the tip of the locking pin 99 is engaged with the locking hole 89H of the ring member 89. A switch 105 is provided. In the present embodiment, the switch 105 is, for example, a limit switch. When the switch 105 is operated, the power of the motor M1 for low-speed rotation is cut off.

The reference numeral 107 in FIG.
Reference numeral 109 denotes a cover that covers the part 9 and a cover that covers a part of the deburring tool 3.

In the second embodiment having the above structure,
When the motor M2 for high-speed rotation is rotated, the rotary shaft 57 and the eccentric hole member 65 are rotated at high speed, and the stationary shaft 69 rotatably supported in the eccentric hole 65H of the eccentric hole member 65.
Is rotated at high speed with a small radius.
When the motor M1 for low-speed rotation is driven, the stationary shaft 69 is rotated at low speed (self-rotation).

Accordingly, the deburring tool 3 supported by the stationary shaft 69 is rotated at a high speed eccentrically with a small radius and is rotated at a low speed around the axis, thereby providing the same effects as in the first embodiment. Things.

The driving of the low-speed motor M1 is stopped,
When the stopper pin 103 of the fixing device 93 is rotated to engage the stopper pin 103 with the concave portion 97C of the pin guide 97, the distal end 99E of the stopper pin 99 is moved by the action of the spring 101 so that the engaging hole 89H of the ring member 89 is formed. Engages.

As described above, the locking pin 99 is attached to the ring member 8.
9, the pulley 77, the stationary shaft 6
9. The tool holder 73 and the like are fixed in a non-rotatable state. Further, the switch 105 is operated, the power of the motor M1 for low-speed rotation is cut off, and the driving of the motor M1 is disabled.

Therefore, the locking pin 9 in the fixing device 93
When the lock 9 is engaged with the locking hole 89H of the ring member 89 and fixed, the motor M1 for low-speed rotation is not driven, and safety is further improved. .

When the pulley 77 and the like are fixed as described above, the stationary shaft 69 performs only a high-speed eccentric rotation (revolution) of a minute radius by the rotation of the rotating shaft 57, and the rotation around the axial center (revolution). Rotation) is regulated,
The direction of the stationary shaft 69 is always kept constant.

Therefore, for example, as shown in FIG.
In order to deburr a rectangular hole H in an appropriately shaped work W, when performing deburring using, for example, a deburring tool 3 having a rectangular cross section corresponding to the shape of the hole H, a small radius is required. By moving the hole H of the work W relative to the eccentrically rotating (vibrating) deburring tool 3 in the direction of the arrow, deburring of the hole H is performed.

That is, the stationary shaft 6 is fixed using the fixing device 93.
Restricting the rotation such as 9 is effective when a directional deburring tool is used to deburr a directional processed portion.

In the second embodiment, the configuration in which the tool holder 73 is integrally mounted on the stationary shaft 69 has been described. However, as in the first embodiment, the tool holder 73 can be freely rotated on the stationary shaft 69. , The tool holder 73 and the pulley 77 may be interlockingly connected.

When a motor with a brake is employed as the low-speed rotation motor M1, the brake can hold the motor M1 in a stopped state and the pulley 77 and the tool holder in a stopped state. It is also possible to omit the device.

[0042]

As will be understood from the above description of the embodiment, in the invention according to the first aspect of the present invention, the rotating shaft and the stationary shaft which are rotated at high speed by the high-speed motor are relatively rotatable. The tool holder supporting the stationary shaft and the deburring tool is relatively rotatable. The radial pins provided on the stationary shaft are held between a pair of pinch rollers provided at predetermined positions.

That is, in the invention according to the first aspect, since the rotary shaft, the stationary shaft and the tool holder have a triple structure, when the deburring tool performs deburring of the work, the relationship between the rotating shaft and the stationary shaft is determined. Therefore, the deburring tool performs deburring by performing high-speed eccentric motion with a small radius while maintaining the directionality constant, and the deburring tool itself does not rotate at high speed around the axis. Is not scattered around.

Further, since the stationary shaft and the tool holder are relatively rotatable, when a large load acts between the work and the deburring tool, the deburring tool relatively rotates to release the load. As a result, safety is improved.

Further, the tool holder is interlockedly connected to a motor for low-speed rotation, so that the deburring tool can be rotated as required to change the working position with respect to the work, and the wear of the deburring tool can be reduced. It is possible to achieve uniformity.

According to the second aspect of the present invention, when the tool holder is non-rotatably fixed by the fixing device, the switch operates to cut off the power supply of the low-speed rotation motor, so that the safety is further improved. It is.

[Brief description of the drawings]

FIG. 1 is an explanatory plan sectional view of an apparatus showing a first embodiment of the present invention.

FIG. 2 is an operation explanatory view showing a deburring function.

FIG. 3 is a front sectional view of a part of an apparatus showing a second embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional detailed view of an arrow IV part in FIG. 3;

FIG. 5 is an operation explanatory view showing one processing example.

[Explanation of symbols]

 3 Deburring Tool 5 Eccentric Rotating Mechanism 9 Output Shaft (Rotating Shaft) M1 Motor 29, 69 Stationary Shaft 43, 73 Tool Holder 57 Rotating Shaft

Claims (2)

(57) [Claims] An eccentric hole member having an eccentric hole whose axis is eccentric with respect to the axis of the rotation shaft is integrally provided on a rotation shaft rotated by a motor for high-speed rotation. A radial pin protruding from a relatively rotatably supported stationary shaft is clamped by a pair of pinch rollers provided at predetermined positions to restrict the rotation of the stationary shaft with respect to the rotating shaft. A deburring device comprising: a tool holder supporting a deburring tool rotatably supported on the stationary shaft; and interlockingly connecting the tool holder to a low-speed rotation motor. 2. An eccentric hole member having an eccentric hole whose axis is eccentric with respect to the axis of the rotation shaft is integrally provided on a rotation shaft rotated by a motor for high-speed rotation. A stationary shaft that is relatively rotatably supported is provided with a tool holder supporting a deburring tool, and the stationary shaft or the tool holder is provided in conjunction with a low-speed rotation motor, and the stationary shaft or A deburring device comprising a fixing device capable of fixing the tool holder in a non-rotatable state, wherein the fixing device includes a switch for shutting off a power supply of a low-speed rotation motor during a fixing operation. .