JP2000167754A - Method and device for deburring workpiece machining face using rotary brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and securely remove burr on a workpiece machining face without expanding an installation space greatly in particular. SOLUTION: This deburring method relatively moves a workpiece W in the direction along its machining face while rotating rotary brushes 34A, 34B around central axes thereof and the rotary brushes 34A, 34B are turned around central axis thereof and an axis substantially orthogonal for the machining face of the workpiece. Moreover, this deburring device is provided with a brush drive means rotating the rotary brushes around the central axes and a turn drive means turning it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing burrs formed on a work surface of a workpiece.

[0002]

2. Description of the Related Art Generally, when a work surface having a concave portion is removed, burrs are generated at the edge of the concave portion. For example, as shown in FIGS. 5A and 5B, when a processing surface of a work 90 having a concave portion 92 having a complicated shape is milled, a boundary between the inner wall surface of the concave portion and the work processing surface (finished surface) is obtained. A burr 94 as shown in FIG.
Occurs.

Conventionally, brushing with a rotating brush has been known as a means for removing such burrs 94. This rotary brush is roughly classified into the following two types.

A) Radial brush (FIGS. 6A and 6B) This brush has a large number of wires (for example, a single wire made of synthetic resin) 102 on the outer peripheral surface of a rotation center shaft 100 extending in the horizontal direction.
Are radially planted, and the rotation center axis 100 is driven to rotate around its own axis by a motor (not shown). Then, at a relative position where the wire 102 and the work surface of the work W are in contact with each other, the work W is transferred in a direction substantially parallel to the work surface and in a direction opposite to the rotation circumferential direction of the brush. The burrs 94 on the processing surface of the work W can be removed (see, for example, Japanese Utility Model Registration Publication No. 2576977).

B) Cup-type brush (FIGS. 7 (a) and 7 (b)) This brush has a substantially circular base material 104, and a wire 106 extending in the axial direction is planted in a cylindrical shape on the lower surface. The brush diameter is set slightly larger than the processing surface width of the work W. Then, the base material 104 and the wire rod 106 are integrally rotated around the central axis of the cylinder, and the work W is transferred in a direction substantially parallel to the surface while the surface of the work W is in contact with the wire rod 106. As a result, the burr 94 on the work processing surface can be removed (for example, see Japanese Utility Model Registration Publication No. 256562454).

[0006]

In the radial brush of A), the circumferential direction of rotation of the wire rod 102 on the workpiece processing surface is always constant, and therefore, as shown in FIG. 8, the downstream side in the brush rotation direction (right side in FIG. 8). There is a disadvantage that the burr 94 located at the position cannot be almost removed. To avoid such inconvenience, the work W may be reciprocated with respect to the rotating brush, and the rotation direction of the brush may be reversed with the reversal of the movement direction of the work W. In this case, Processing takes twice as long, and the processing efficiency is greatly reduced.

On the other hand, in the case of the cup type brush B), FIG.
As shown in (a), in the region near the center of the workpiece W, the rotation direction of the wire 106 when first contacting the wire 106 (arrow A2 in the drawing) and the rotation direction when contacting the wire 106 for the second time. Since the rotating direction of the wire 106 (arrow A1 in the figure) is opposite, the burr in the area can be effectively removed regardless of the direction, but the left and right edges of the work W (FIG. 7A) In both upper and lower edges), the wire 106
Is constant (arrows A3 and A4 in the figure),
As in the case of the radial brush, there is an inconvenience that burrs on the downstream side in the brush rotation direction cannot be effectively removed by one work transfer.

As means for solving such inconveniences,
As shown in FIG. 9A, the two rotating brushes 106 are arranged and rotated in opposite directions to transfer the work W in the direction in which the brushes 106 are arranged, or as shown in FIG. It is conceivable to use a brush having a sufficiently large diameter. However, in each case, the space required for installing the brush is greatly increased, which significantly impedes downsizing and cost reduction of the entire processing apparatus.

SUMMARY OF THE INVENTION In view of such circumstances, an object of the present invention is to provide a method and an apparatus capable of efficiently and surely removing burrs on a work surface of a work without particularly increasing a facility space.

[0010]

As a means for solving the above-mentioned problems, the present invention provides a deburring method for a work surface of a workpiece using a rotary brush having a large number of wires radially arranged around a rotation center axis. Moving the work relative to the rotating brush in a direction along the work processing surface while the work surface is in contact with the rotating brush while rotating the rotating brush about its central axis. In addition, during the relative movement, the rotary brush is turned around an axis substantially perpendicular to the center axis and substantially perpendicular to the workpiece processing surface.

According to this method, during the relative movement of the work with respect to the rotating brush, the rotating brush rotates about the central axis and at the same time, rotates about the axis substantially perpendicular to the central axis and the work processing surface. Therefore, the direction of brushing the workpiece processing surface changes due to the turning. Therefore, burrs on the workpiece processing surface can be reliably removed by one relative movement regardless of the orientation.

In this method, a single rotating brush may be used, or a plurality of rotating brushes are arranged so that their central axes are aligned, and these rotating brushes are simultaneously rotated around the central axis. You may make it rotate integrally about the axis substantially orthogonal to this while rotating. In the latter case, a wide range of deburring can be performed while reducing the size of each rotating brush.

[0013] The present invention is also a deburring apparatus for performing the above method, comprising: a brush support member for rotatably supporting the rotating brush about its central axis; A brush driving means for rotationally driving, a turning support member for supporting the brush supporting member so as to be turnable about an axis substantially perpendicular to a central axis of the rotating brush, and a center of the rotating brush for the brush supporting member. Turning drive means for turning and driving around an axis in a direction substantially orthogonal to the axis.

According to this device, the rotating brush is driven to rotate about its central axis by the brush driving means, and the brush supporting member and the rotating brush are driven to rotate together by the turning driving means, thereby removing the deburring. The method can be performed.

The brush driving means and the turning drive means may use different motors, respectively. However, the brush driving means and the turning drive means use a common drive source and the driving force. By providing a drive transmission mechanism that transmits the rotating brush and the brush support member and simultaneously rotates them around a predetermined axis, it is possible to simultaneously rotate and rotate the rotating brush while using a single drive source. Therefore, the entire apparatus can be further reduced in size and cost.

More specifically, a turning drive mechanism for transmitting the driving force of the driving source to the brush supporting member to turn the brush supporting member, and a turning driving mechanism provided between the brush supporting member and the rotating brush, It is preferable that the apparatus includes a rotation conversion mechanism that converts the turning force of the brush support member into the rotation force of the rotating brush.

Also in this apparatus, the number of rotating brushes may be singular or plural. When a plurality of rotating brushes are used, these rotating brushes are fixed to a common rotation center axis, and a portion located between the rotation brushes, which is an intermediate portion of the rotation center axis, is supported by the brush support member. In addition, by arranging at least a part of a drive transmission mechanism for transmitting the driving force of the brush driving means to the rotation center axis in a position near the rotation center axis in the brush support member, the apparatus can be downsized. At the same time, the rotation balance can be improved, and the moment of inertia can be reduced.

In this case, a shaft rotatable relative to the brush support member is disposed on the center axis of rotation of the brush support member, and the shaft body differs from the rotation angular velocity of the brush support member and the center axis of rotation. The brush driving means and the turning driving means are configured to rotate at an angular velocity, and a rotation for converting a relative rotational force of the shaft with respect to the brush support member and the rotational center axis into a rotational force about its own axis of the rotational center axis. If a conversion mechanism (e.g., a bevel gear that can mesh with the rotation center shaft and the shaft body) is provided at a location near the rotation center shaft in the brush support member,
With a compact structure, it is possible to simultaneously execute both the brush drive and the turning drive.

Further, the brush driving means and the turning driving means include a common driving source, and a drive transmitting mechanism for transmitting the driving force to the shaft and the brush supporting member to rotate them at different angular velocities. Thus, both the brush drive and the turning drive can be performed by a single drive source.

Further, even if the shaft is fixed so as not to rotate, the shaft and the brush support member can be rotated relative to each other. In this case, it is not necessary to provide a plurality of driving sources.

[0021]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

FIGS. 1A to 1D and FIGS.
In (c), W is a workpiece to be machined, and in this embodiment, has a substantially flat shape. This work W
Is placed on a transfer table (not shown),
(B) to (d) and to the right in FIG. 2 (b). On the upper surface (working surface) of this work W,
For example, a concave portion as shown in FIG. 5 is formed, and milling is performed on a surface other than the concave portion, so that the edge of the concave portion has burrs. A deburring device according to the present invention is provided above the work W.

As shown in FIG. 3, the deburring device 10
Is provided with a fixed cylinder 11 extending vertically, and a rotating cylinder 14 extending vertically also through a bearing 12 inside the fixed cylinder 11.
Is held. The fixed cylinder 11 is fixedly supported by a support member (not shown) so as not to be movable, and the rotating cylinder 14 is capable of turning around its own axis (Y axis) with respect to the fixed cylinder 11. Further, a shaft body 20 is held inside the rotary cylinder 14 via a bearing 18 so as to be rotatable about the Y axis (about its own axis).

Pulleys 16 and 22 are fixed to the upper end of the rotary cylinder 14 and the upper end of the shaft body 20, respectively. Although the pulleys 16 and 22 are coaxially arranged, the diameter of the pulley 16 is larger than the diameter of the pulley 22. On the other hand, in the vicinity of the fixed cylinder 11, the motor 2 as a single drive source
6 is installed, and a pulley 24 is fixed to an output shaft thereof.
7 and a belt 23 is stretched between the pulley 24 and the pulley 22. Therefore, by the operation of the motor 26, the rotary cylinder 14 and the shaft body 20 are simultaneously driven to rotate at different angular velocities.

A gear box 28 is provided at the lower end of the rotary cylinder 14.
Are connected, and the gear box 28 and the rotary cylinder 14 constitute a brush supporting member according to the present invention.

A rotation center shaft 30 is supported by the gear box 28 so as to penetrate the gear box 28 in the horizontal direction. The rotation center shaft 30 is supported by a side wall of the gear box 28 via a bearing (not shown) so as to be rotatable around a horizontal axis (X axis) orthogonal to the Y axis. A pair of left and right rotating brushes 34A and 34B are provided at both ends of the rotation center shaft 30. Specifically, a cylindrical block 31 is fixed around both ends of the rotation center shaft 30, and a large number of wires 32 are radially implanted on the outer peripheral surface of the cylindrical block 31. A bevel gear 36 is fixed in the gear box 28 at a position slightly deviated from the center of the rotation center shaft 30.

On the other hand, a transmission shaft 38 is connected to the lower end of the shaft body 20 coaxially therewith. The transmission shaft 38 penetrates the top wall of the gear box 28 in a rotatable manner, and its lower end faces the inside of the gear box 28. And
A bevel gear 40 is fixed to the lower end of the transmission shaft 38, and the bevel gear 40 is meshed with the bevel gear 36.
Accordingly, when the shaft body 20 and the transmission shaft 38, the rotating cylinder 14, the gear box 28, and the rotation center shaft 30 rotate relatively around the Y axis, the relative rotational force is rotated around the X axis by the bevel gears 36 and 40. The rotation force of the rotation center shaft 30 is converted into the rotation force.

Next, the operation of the deburring device 10 and a deburring method using the device will be described.

In FIG. 3, when the motor 26 is operated and the pulley 24 fixed to the output shaft is rotated, the rotation driving force is transmitted to the rotary cylinder 14 via the belt 17 and the pulley 16, and at the same time, Belt 23 and pulley 22
Is transmitted to the shaft body 20 through the shaft member 20, but since the diameter of the pulley 16 is larger than the diameter of the pulley 22, the rotation angular velocity of the rotary cylinder 14 is lower than the rotation angular velocity of the shaft body 20. That is,
The rotary cylinder 14 and the shaft body 20 relatively rotate around the Y axis.

At this time, in the lower part of the deburring device 10, the gear box 28 and the rotation center shaft 3 are integrated with the rotary cylinder 14.
0, and rotating brushes 34A, 34 provided on both ends thereof
B turns around the Y axis. Moreover, since the turning angular velocity is different from the turning angular velocity of the shaft body 20 and the transmission shaft 38 at the lower end thereof, the bevel gear 36 revolves around the bevel gear 40 at an angular velocity corresponding to the difference while being engaged. Thereby, the bevel gear 36, the rotation center shaft 30, and the rotating brushes 34A and 34B at both ends rotate integrally about the X axis.

While the deburring device 10 is operated in this manner, the workpiece W is processed at the position where it comes into contact with the outer peripheral portions of the lower ends of the rotating brushes 34A and 34B as shown in FIGS. Is slowly moved in a direction along the surface of the workpiece W, burrs formed on the surface of the work W are sequentially removed by the rotating brushes 34A and 34B that are being rotationally driven. In addition, since these rotating brushes 34A and 34B revolve around the Y axis, as shown in FIGS. 1A and 1C, both rotating brushes 34A and 34B sweep the work surface to the right in the traveling direction. As shown in FIGS. 2A and 2C, the state in which the rotating brushes 34A and 34B sweep the workpiece surface to the left in the traveling direction periodically and alternately. Therefore, during the transfer of the work W, the surface thereof is brushed in both the left and right directions, and all burrs on the work surface are removed regardless of the direction.

That is, according to this method and apparatus, 1
The burrs in all directions formed on the surface can be reliably removed by a single work transfer.

In the deburring apparatus 10 according to this embodiment, the rotation of the rotary brushes 34A and 34B around the X axis and the rotation of the rotation about the Y axis are simultaneously performed by a common drive source (motor 26). It is possible to
The above-mentioned deburring method can be performed with a simple and compact structure.

Next, a second embodiment will be described with reference to FIG.

In this embodiment, instead of the rotary cylinder 14 shown in FIG. 3, a solid (alternatively, cylindrical) rotary shaft 14 'is rotatably held inside the fixed cylinder 10. . A pulley 16 fixed to the upper end is connected to a pulley 24 fixed to an output shaft of a motor 26 via a belt 17. That is, the motor 26 is driven only by the rotating shaft 14 '.

A brush holding member 42 is connected to the lower end of the rotating shaft 14 '. The brush holding member 42 and the rotating shaft 14' constitute a brush supporting member according to the present invention. The brush holding member 42 has a bifurcated shape sandwiching the single rotary brush 34 from both left and right sides, and both ends of the rotation center shaft 30 are rotatably supported by both side walls. A tubular block 31 is fixed around the intermediate portion of the rotation center shaft 30, and a large number of wires 32 are radially implanted on the outer peripheral surface of the tubular block 31.

A hollow gear box 28 'is formed at the lower part of one side wall of the brush holding member 42. At the end of the rotation center shaft 30 located inside the gear box portion 28 ',
The bevel gear 36 is fixed. A vertical gear shaft 38 is rotatably supported on the upper part of the gear box portion 28 '.
The lower end faces the inside of the gear box 28 ', and a bevel gear 40 meshed with the bevel gear 36 is fixed to the lower end. A spur gear 44 is formed at the end of the gear shaft 38 and meshes with a ring-shaped spur gear 46 fixed to the outer peripheral surface of the lower end of the fixed cylinder 10.

In this apparatus, when the rotating shaft 14 'is driven to rotate around the Y axis by the operation of the motor 26, the rotating brush 34 turns around the Y axis integrally with the rotating shaft 14' and the brush holding member 42. . With this turning, the spur gear 4
The gear 4 rotates while revolving around the spur gear 46 while meshing with the spur gear 46. The rotation of the spur gear 44 is converted by the gear shaft 38 and the bevel gears 40 and 36 into rotation of the rotation center shaft 30 around the X axis. That is, the rotating brush 34 rotates around the Y axis orthogonal to the X axis while rotating around the X axis.
Therefore, even when this apparatus is used, the deburring method according to the present invention can be carried out similarly to the apparatus shown in FIG. 3, and good deburring can be performed.

However, in comparison with the apparatus shown in FIG. 4, the apparatus shown in FIG. 3 has the following advantages.

The rotation center shaft 30 is supported at an intermediate position between the two rotating brushes 34 A and 34 B, and a rotation conversion mechanism including bevel gears 36 and 40 can be provided at the intermediate position, so that the structure is compact. In addition, the rotation balance is good, and the moment of inertia can be kept small.

Since the rotating brushes 34A and 34B are arranged in a distributed manner, a large machining area can be secured while reducing the size of each rotating brush 34A and 34B.

As in the case of the spur gears 44 and 46 shown in FIG. 4, since the drive transmission can be performed without exposing the gears to the outside, the reliability is high.

Note that these effects are not limited to two rotary brushes, but can be obtained similarly even if three or more rotary brushes are arranged.

In addition, the present invention can take the following embodiments, for example.

In the apparatus shown in FIG.
It is also possible to omit one of 4A and 34B and perform brushing only with the other.

In the device shown in FIG.
The mechanism for converting the rotation about the axis into the rotation of the rotation center axis 30 about the X axis is not limited to the bevel gear mechanism as described above, and various transmission mechanisms such as a staggered gear mechanism, a screw gear mechanism, and a winding transmission mechanism are used. Is applicable.

In the apparatus shown in FIG. 3, instead of connecting the shaft body 20 to the motor 26, the shaft body 20 may be fixed so as not to rotate, by utilizing the relative rotation of the rotary cylinder 14 with respect to the shaft body 20. Thus, the rotary brushes 34A and 34B can be driven to rotate about the X axis.

In the method of the present invention, the center axis (X axis) of the rotating brush and the turning axis (Y axis) do not necessarily have to be strictly perpendicular to each other, and may be slightly inclined. Also,
The processing surface of the work W may be slightly inclined with respect to the X axis.

FIGS. 1 and 2 show a method of transferring the work W. However, the work W may be kept stationary and the entire deburring apparatus 10 may be moved in parallel along the machined surface. Good. Further, both the work W and the deburring device 10 may be moved.

[0050]

As described above, according to the present invention, the rotary brush is rotated in the direction along the workpiece processing surface while the rotary brush is being rotated around its central axis while the workpiece processing surface is in contact with the rotary brush. Relative to the workpiece, and during the relative movement, the rotating brush is turned around an axis substantially perpendicular to the center axis and substantially perpendicular to the workpiece processing surface. There is the effect that burrs on the work surface can be efficiently and reliably removed without significantly increasing the space.

[Brief description of the drawings]

1A is a left side view showing a state in which a deburring device is at a predetermined turning angle in a first embodiment of the present invention, FIG. 1B is a front view showing the same state, and FIG. FIG. 3D is a right side view showing the same state, and FIG. 4D is a plan view showing the same state.

FIG. 2A shows a state in which the deburring device is shifted from the state of FIG.
FIG. 5B is a left side view showing a swiveled state, FIG. 6B is a front view showing the same state, and FIG. 7C is a right side view showing the same state.

FIG. 3 is a sectional front view of the deburring apparatus according to the first embodiment of the present invention.

FIG. 4 is a sectional front view of a deburring apparatus according to a second embodiment of the present invention.

5A is a plan view of a work having a concave groove formed on an upper surface, FIG. 5B is a cross-sectional view taken along line AA of FIG. 5A, and FIG.
FIG.

FIG. 6A is a plan view showing a conventional deburring method using a radial rotating brush, and FIG. 6B is a front view thereof.

7A is a plan view showing a conventional deburring method using a cup-type rotating brush, and FIG. 7B is a front view thereof.

FIG. 8 is a cross-sectional view showing details of a deburring situation by the radial rotating brush.

9A is a plan view illustrating a method of arranging a plurality of cup-shaped rotary brushes in parallel, and FIG. 9B is a plan view illustrating a method of using a large-diameter cup-shaped rotary brush.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Deburring apparatus 14 Rotary cylinder (brush support member) 14 'rotation shaft (brush support member) 20 Shaft 26 Motor (drive source) 28 Gear box (brush support member) 30 Rotation center axis 34, 34A, 34B Rotary brush 36 , 40 bevel gear 42 brush holding member (brush support member) 44, 46 spur gear (constituting rotation conversion mechanism)

Claims (10)

[Claims] 1. A method of deburring a workpiece processing surface using a rotary brush having a large number of wires radially arranged around a rotation center axis, wherein the rotation brush is rotated around the center axis. While the work surface is in contact with the rotating brush, the workpiece is moved relative to the rotating brush in a direction along the workpiece processing surface, and during the relative movement, the rotating brush is substantially moved with respect to its central axis. A method for removing burrs on a work surface using a rotating brush, characterized in that the work surface is rotated about an axis which is orthogonal and substantially perpendicular to the work surface. 2. The method according to claim 1, wherein a plurality of rotating brushes are arranged so that their central axes are aligned with each other, and these rotating brushes are aligned with their central axes. A method for removing burrs on a work surface using a rotating brush, wherein the rotating surface is simultaneously rotated around an axis substantially orthogonal to the rotating direction. 3. A device for deburring a work surface using a rotary brush, comprising: a brush support member for rotatably supporting the rotary brush around its central axis; A brush driving means for rotationally driving the brush; a turning support member for supporting the brush supporting member so as to be rotatable around an axis substantially perpendicular to a center axis of the rotating brush; A deburring device for a work surface using a rotary brush, comprising: a turning drive means for turning and driving around an axis substantially perpendicular to a central axis. 4. A deburring apparatus for a work surface using a rotating brush according to claim 3, wherein a common driving source is used as said brush driving means and turning drive means, and said driving force is applied to said rotating brush and brush support. A drive transmission mechanism for transmitting the rotation to a member and rotating the rotation about a predetermined axis at the same time. 5. A deburring device for a work surface using a rotary brush according to claim 4, wherein a turning drive mechanism for transmitting a driving force of the driving source to the brush supporting member to turn the brush supporting member, A work conversion surface using a rotary brush, comprising: a rotation conversion mechanism provided between the brush support member and the rotary brush for converting a turning force of the brush support member into a rotary force of the rotary brush. Deburring device. 6. A deburring apparatus for a work surface using a rotary brush according to claim 3, wherein a plurality of rotary brushes are fixed to a common rotation center axis, and the rotation brush is an intermediate portion of the rotation center axis. A part of the drive transmission mechanism that transmits the driving force of the brush driving means to the rotation center axis at a position near the rotation center axis in the brush support member while supporting the portion located between the brush support members. A deburring device for a workpiece processing surface using a rotating brush, at least a part of which is arranged. 7. A deburring apparatus for a workpiece processing surface using a rotary brush according to claim 6, wherein a shaft body rotatable relative to the brush support member is arranged on a turning center axis of the brush support member. The brush drive means and the rotation drive means are configured so that the shaft rotates at an angular velocity different from the rotation angular velocity of the brush support member and the rotation center axis, and the brush support member and the rotation center axis of the shaft body are rotated. A rotary conversion mechanism for converting a rotational force relative to the rotational center into a rotational force about its own axis is provided at a position near the rotational axis in the brush support member. Surface deburring device. 8. A deburring apparatus for a workpiece processing surface using a rotating brush according to claim 7, wherein a bevel gear that can mesh with the rotation center shaft and the shaft body is provided as the rotation conversion mechanism. Deburring device for work surface using rotating brush. 9. A deburring apparatus for a workpiece processing surface using a rotary brush according to claim 7, wherein a common driving source is used as the brush driving means and the turning driving means, and the driving force is applied to the shaft body and the rotating body. A deburring device for a work surface using a rotating brush, comprising: a drive transmission mechanism for transmitting the rotation to the brush support member and rotating the rotation at different angular velocities. 10. A deburring device for a work surface using a rotary brush according to claim 7 or 8, wherein the shaft body is fixed so as not to rotate. Taking device.