JP7253238B2 - Deburring device - Google Patents

Description

The present invention relates to a burr removing device for removing burrs adhering to rough materials (workpieces) of machine parts, for example.

When machining rough materials (workpieces) for machine parts with a mold or the like, burrs adhere to the work piece. This type of work burr removal technology consists of a work shape sensor that measures the shape of the work to be machined and a 4-axis articulated mechanism that grips the work to be machined and holds it in the required position and posture. A workpiece holding unit, a two-axis multi-joint mechanism that arbitrarily moves a milling cutter that is a tool for deburring, a cutter drive unit composed of a single axis that slides the milling cutter back and forth, and a workpiece shape sensor. There is known deburring equipment for rough aluminum material, which is composed of an NC controller that converts data into a machining program and causes each unit to operate according to the program (Patent Document 1 below).

The cutter drive unit used a ball screw to move the milling cutter back and forth. A screw groove is formed around the ball screw. A covering member such as a cover is placed so as to cover it. The covering member has a bellows portion that can be opened and closed (expanded and contracted) in one axial direction in order to allow the milling cutter to move in the front-rear direction.

Japanese Unexamined Patent Application Publication No. 2011-235368

By the way, when the milling cutter moves in the front-rear direction, the bellows portion of the covering member formed in a bellows shape opens and closes (extends and contracts). The covering member ages prematurely. When the covering member deteriorates over time, the covering member that has deteriorated over time must be replaced with a new one. was extremely difficult to replace. In addition, when the bellows portion of the covering member opens and closes (stretches and contracts), burrs or the like enter the bellows portion, causing damage to the bellows portion.

In order to solve the above problems, an attempt was made to move the milling cutter back and forth by using another driving force transmission member instead of the ball screw. There was a problem that the deburring device became large.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a burr removing device which can maintain driving performance and can be miniaturized in order to solve the above technical problems.

The present invention is a burr removing device for removing burrs from a workpiece, comprising: a first base portion extending in a predetermined direction; and an extension of the first base portion from an end portion of the first base portion. a second base portion extending in a direction perpendicular to the extending direction; and an extension of the first base portion in a direction perpendicular to the extending direction of the second base portion from an end portion of the second base portion. a third base portion extending in a direction opposite to the existing direction; a shaft portion disposed above the first base portion; a driving member, a driving source disposed on the third base portion for moving the rotational driving member, and a driving force of the driving source being transmitted to the rotational driving member to enable movement of the rotational driving member. and a reduction mechanism for reducing the number of revolutions of the driving source and transmitting the same to the driving force transmission member , wherein the reduction mechanism is provided between the first base portion and the third base portion. It is placed in a dead space formed by utilizing the height difference .

The first base portion and the driving force transmission member are provided on the same plane.

A plurality of the rotation drive members are provided, and each of the rotation drive members is provided with a blade having a different shape.

According to the present invention, the reduction mechanism for reducing the rotation speed of the drive source and transmitting it to the driving force transmission member is arranged in the dead space formed by using the height difference between the first base portion and the third base portion. As a result, it is possible to reduce the size of the burr removing device. In addition, since the second base portion and the third base portion function as walls surrounding the reduction mechanism, burrs and the like removed from the workpiece are blocked by the second base portion and the third base portion and collide with the reduction mechanism. can be prevented.

Also, since the first base portion and the driving force transmission member are provided on the same plane, it is possible to reduce the size of the burr removing device.

In addition, since blades having different shapes are provided on the respective rotary drive members, it is possible to cope with a plurality of machining portions of the object to be machined and different required machining accuracies.

1 is a perspective view of a burr removing device according to a first embodiment of the present invention, viewed obliquely from above; FIG. 1 is a plan view of a burr removing device according to a first embodiment of the present invention; FIG. 1 is a side view of a burr removing device according to a first embodiment of the present invention; FIG. 1 is a front view of a burr removing device according to a first embodiment of the present invention; FIG. FIG. 11 is a perspective view of a burr removing device according to a second embodiment of the present invention, viewed obliquely from above; FIG. 4 is a plan view of a burr removing device according to a second embodiment of the present invention; FIG. 5 is a side view of a burr removing device according to a second embodiment of the present invention; It is a front view of a burr removing device according to a second embodiment of the present invention.

A burr removing device according to a first embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 4, the burr removing device 10 is a device for removing burrs from an object to be processed (workpiece) having a single rotary drive member 12 .

The deburring device 10 has a base member 14 . The base member 14 includes a first base portion 14a extending in the horizontal direction (direction of arrow X in FIG. 3) and a vertical direction (direction of arrow Y in FIG. 3) rising from the rear side end portion of the first base portion 14a. A second base portion 14b that extends, and a third base portion 14c that extends in the horizontal direction (direction of arrow X in FIG. 3) opposite to the first base portion 14a from the upper end of the second base portion 14b. ,have.

A dead space 16 is provided below the third base portion 14c, which is formed by utilizing the height difference between the first base portion 14a and the third base portion 14c.

The first base portion 14a, the second base portion 14b, and the third base portion 14c may be formed by bending an integrally formed member. The configuration may be

A support portion 18 is attached to the front end portion of the first base portion 14a. Bearings (not shown) are provided on the support portion 18 and the second base portion 14b, and two shaft portions (shafts) 20 are arranged across the bearing portions. Each shaft portion 20 is a shaft extending in the axial direction (for example, the horizontal direction).

The number of shaft portions 20 is not limited to two, and one or three or more may be provided.

The second base portion 14 b serves both as means for forming the dead space 16 and as a bearing for the shaft portion 20 .

A holding member 22 that is movable along the axial direction of the shaft portion 20 is attached to the shaft portion 20 . The holding member 22 has a base portion 22a attached around the shaft portion 20 so as to be movable along the axial direction of the shaft portion 20, and a base portion 22b connected to the base portion 22a. .

The rotary drive member 12 is fixed to the base portion 22b. The rotary drive member 12 has a power shaft 12a capable of rotating at high speed. A blade 24 is provided at the tip of the power shaft 12a for contacting and removing burrs formed on the workpiece. The blade 24 rotates around the axis together with the rotation of the power shaft 12a.

A spindle motor is preferred as the rotary drive member 12 .

A drive source 26 is attached to the third base portion 14c. The drive source 26 is arranged such that the longitudinal direction of the drive source 26 is orthogonal to the axial direction of the shaft portion 20 . In other words, the drive source 26 is provided so that the axial direction, which is the longitudinal direction, is the vertical direction. Therefore, the drive source 26 is positioned in a region (called an effective space 32) having a predetermined length upward from the upper surface of the third base portion 14c.

The drive source 26 is a drive motor, preferably a servomotor, for example. In this case, the drive shaft (not shown) of the drive source 26 rotates forward and backward over a predetermined arc length to achieve circular motion.

The drive shaft of the drive source 26 can also be controlled to perform forward or reverse rotational motion.

A reduction mechanism 28 is connected to the drive source 26 to reduce the rotation speed of the drive shaft of the drive source 26 . By providing the speed reduction mechanism 28, the torque can be increased.

The reduction mechanism 28 is composed of, for example, a reduction gear group.

The speed reduction mechanism 28 is arranged in a dead space 16 formed on the lower surface side of the third base portion 14c. Since the second base portion 14b extends along the vertical direction (direction of arrow Y in FIG. 3), the extension length of the second base portion 14b and the length of the third base portion 14c are on the lower surface side of the third base portion 14c. A predetermined dead space 16 whose size is defined by the extension length of is formed. The effective use of the dead space 16 as a location for the speed reduction mechanism 28 is also a feature of the design of the deburring device 10 .

A rear end portion of the driving force transmission member 30 is mechanically connected to the speed reduction mechanism 28 at a first connecting portion 38 . The driving force transmission member 30 transmits the driving force of the driving source 26 to the rotation driving member 12 so that the rotation driving member 12 moves in the axial direction of the shaft portion 20 . Specifically, the driving force transmission member 30 converts the arc motion of the driving source 26 into linear motion, thereby transmitting the driving force of the driving source 26 to the rotary driving member 12 via the holding member 22 . This allows the rotary drive member 12 to move linearly along the axial direction of the shaft portion 20 .

In this specification, "linear motion" includes reciprocating linear motion in addition to motion in a predetermined axial direction.

The driving force transmission member 30 is composed of, for example, a link mechanism 31 . The link mechanism 31 has, for example, an arm member.

A front end portion of the driving force transmission member 30 is mechanically connected to the base portion 22 a of the holding member 22 at the second connecting portion 40 . Therefore, the driving force transmission member 30 has a function of mechanically connecting the driving source 26 and the rotary driving member 12 .

Here, the lower surface of the driving force transmission member 30 is set to match the lower surface of the first base portion 14a. That is, the first base portion 14a and the driving force transmission member 30 are designed to be positioned on the same plane. As a result, the driving force transmission member 30 does not protrude downward with respect to the first base portion 14a, which contributes to miniaturization of the deburring device 10. As shown in FIG. Further, the first base portion 14a also functions to guide the operation of the driving force transmission member 30. As shown in FIG.

The periphery of the driving force transmission member 30 is not covered with a covering member such as a cover. Unlike the screw shaft of a ball screw, the surface of the driving force transmission member 30 is not formed with a thread groove, so that burrs and the like do not enter the thread groove and adversely affect the driving performance. Therefore, there is no need to cover the periphery of the driving force transmission member 30 with a covering member such as a cover, and the number of parts can be reduced.

Next, the operation and effects of the burr removing device 10 according to the first embodiment will be described.

As shown in FIGS. 1 to 4, when the drive source 26 is driven, the drive shaft of the drive source 26 moves in an arc, and the speed of rotation of the drive shaft is reduced by the speed reduction mechanism 28, so that the drive force of the drive source 26 is reduced. is transmitted to the driving force transmission member 30 . The drive force transmission member 30 receives the drive force of the drive source 26 and converts the arc motion of the drive shaft of the drive source 26 into linear motion. As a result, the holding member 22 mechanically connected to the driving force transmission member 30 performs linear motion along the axial direction of the shaft portion 20 . At the same time, the rotary drive member 12 positioned and fixed to the holding member 22 also performs linear motion along the axial direction of the shaft portion 20 . As a result, the blade 24 provided on the power shaft 12a of the rotary drive member 12 comes close to the object to be processed, enabling the deburring operation.

Since the driving force transmission member 30 is composed of the link mechanism 31 that transmits the driving force of the driving source 26 to the rotation driving member 12 to enable the rotation driving member 30 to move in the linear direction, the link mechanism 31 has a screw groove. There is no part or place where a crack is formed, and burrs do not adhere to the thread groove of the link mechanism 31. - 特許庁Therefore, it is not necessary to cover the periphery of the link mechanism 31 with a covering member such as a cover. In addition, since it is not necessary to cover the periphery of the link mechanism 31 with a covering member, it is of course unnecessary to replace the covering member, which improves work efficiency at the factory site.

Since the drive shaft of the drive source 26 makes an arcuate motion, the area required for the movement of the driving force transmission member 30 can be reduced, and the size of the burr removing device 10 can be reduced.

The drive source 26 is arranged on the third base portion 14c so that its axial direction is the vertical direction (the direction of arrow Y in FIG. 3). The rotary drive member 12 is arranged facing the front side of the drive source 26 in the horizontal direction. An effective space 32 is formed in the space 32. By arranging the drive source 26 in a part of the effective space 32 so that the axial direction is vertical, the effective space 32 can be utilized. This can contribute to miniaturization of the burr removing device 10 .

The second base portion 14b is connected to the first base portion 14a, and the dead space 16 formed by the length of the second base portion 12b along the vertical direction (direction of arrow Y in FIG. 3), in other words, By arranging the speed reduction mechanism 28 in the dead space 16 formed by using the height difference between the first base portion 14a and the third base portion 14c, the size reduction of the deburring device 10 is realized.

At the same time, since the second base portion 14b and the third base portion 14c function as walls surrounding the reduction mechanism 28, burrs and the like removed from the workpiece are blocked by the second base portion 14b and the third base portion 14c. Collision with the deceleration mechanism 28 can be prevented. As a result, damage to the speed reduction mechanism 28 can be prevented.

As described above, while the drive source 26, speed reduction mechanism 28, driving force transmission member 30, and rotary drive member 12 are maintained in an organic mechanical connection relationship, the layout of each component is devised. Therefore, it is possible to maintain the driving performance of the rotary drive member 12 and reduce the size of the deburring device 10 at the same time.

Next, a burr removing device according to a second embodiment of the present invention will be described with reference to the drawings. In addition, the same code|symbol is attached|subjected to the structure which overlaps with the structure of the burr removal apparatus based on 1st Embodiment, and description is abbreviate|omitted suitably.

As shown in FIGS. 5 to 8, the burr removing device 10 is provided with two rotary drive members 12 and is for removing burrs from an object to be processed (work).

The two rotary drive members 12 differ from each other only in the shape of the blades 24 and have the same configuration in other respects. As a result, two blades 24 having different shapes can be provided at the same time, so that it is possible to cope with a plurality of machining portions of the object to be machined and different required machining accuracies.

A drive source 26 for driving the two rotary drive members 12 , a speed reduction mechanism 28 and a driving force transmission member 30 are also mounted so as to correspond to the two rotary drive members 12 .

Here, the drive source 26 , the speed reduction mechanism 28 and the driving force transmission member 30 are covered with a guard member 34 . As a result, it is possible to prevent the burrs removed from the workpiece from colliding with the drive source 26, the speed reduction mechanism 8, and the driving force transmission member 30 to adversely affect the drive performance.

Also, by inserting the bundled electrical wiring and the like into the wiring cover 36, the electrical wiring and the like can be bundled. Furthermore, even if the burr removed from the object to be processed protrudes, it is blocked by the wiring cover 36, so that it is possible to prevent the burr from colliding with the electric wiring or the like and being damaged.

The number of rotary drive members 12 is not limited to two, and three or more rotary drive members 12 may be provided. However, in this case, it is necessary to separately provide a drive source, a speed reduction mechanism, and a driving force transmission member for enabling the rotation drive member 12 to move along the axial direction of the shaft portion 20 .

Note that the guard member 34 and the wiring cover 36 may be provided in the burr removing device 10 of the first embodiment.

Each embodiment described above is merely an example for explaining the present invention, and various modifications can be made without departing from the gist of the present invention.

10 Deburring device 12 Rotating drive member 12a Power shaft 14 Base member 14a First base portion 14b Second base portion 14c Third base portion 16 Dead space 18 Support portion 20 Shaft portion 22 Holding member 22a Base portion 22b Base portion 24 Blade 26 Driving source 28 Speed reduction mechanism 30 Driving force transmission mechanism 31 Link mechanism 32 Effective space 34 Guard member 36 Wiring cover 38 First connecting portion 40 Second connecting portion

Claims (3)

A deburring device for removing burrs from an object to be processed,
a first base portion extending in a predetermined direction;
a second base portion extending from an end portion of the first base portion in a direction perpendicular to the extending direction of the first base portion;
a third base portion extending from an end portion of the second base portion in a direction orthogonal to the extending direction of the second base portion and in a direction opposite to the extending direction of the first base portion;
a shaft disposed above the first base;
a rotary drive member that is provided movably in the axial direction of the shaft portion and that drives the blade to rotate;
a drive source disposed on the third base portion for moving the rotary drive member;
a driving force transmission member that transmits the driving force of the driving source to the rotational driving member to enable movement of the rotational driving member;
a speed reduction mechanism that reduces the rotation speed of the drive source and transmits it to the drive force transmission member;
has
The deburring device according to claim 1, wherein the speed reduction mechanism is arranged in a dead space formed by using a height difference between the first base portion and the third base portion. 2. The deburring device according to claim 1, wherein said first base portion and said driving force transmission member are provided on the same plane . A plurality of the rotation drive members are provided ,
3. The deburring device according to claim 1, wherein each of said rotary drive members is provided with a blade having a different shape .

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