JP2020175456A - Burr removing device - Google Patents

Abstract

To provide a burr removing device that can maintain driving performance and reduce the number of components.SOLUTION: A burr removing device 10 for removing burr of a work-piece comprises: a rotationally driving member 12 that rotationally drives a blade 24; a driving source 26 that moves the rotationally driving member 12 in a linear direction; and a driving force transmitting member 30 that transmits driving force of the driving source 26 to the rotationally driving member 12. The driving force transmitting member 30 is a link mechanism 31 that transmits driving force of the driving source 26 to rotationally driving member 12 so that the rotationally driving member 12 can move in the linear direction, and the link mechanism 31 is not covered with a covering member.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, a burr removing device for removing burrs adhering to a rough material (work) of a mechanical part.

When a rough material (workpiece) of a machine part is processed with a mold or the like, burrs adhere to the work piece. As a deburring technique for this type of work, for example, it is composed 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 orientation. A work holding unit, a 2-axis articulated mechanism that arbitrarily operates a milling cutter, which is a tool for deburring, a cutter drive unit that consists of a single axis that slides the milling cutter in the front-back direction, and a work shape sensor. A deburring facility for rough aluminum materials is known, which comprises an NC controller that converts data into a machining program and causes each unit to perform a programmed operation (Patent Document 1 below).

The cutter drive unit used a ball screw to move the milling cutter in the front-back direction. Since a screw groove is formed around the ball screw, in order to prevent burrs and the like removed from the workpiece from adhering to the screw groove on the screw shaft and the like, which adversely affects the driving performance, the circumference of the ball screw is surrounded. A covering member such as a cover is covered so as to cover it. The covering member used has a bellows portion that can be opened and closed (expanded and contracted) in the uniaxial direction in order to allow the milling cutter to move in the front-rear direction.

Japanese Unexamined Patent 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 (expands and contracts), but as the number of movements of the milling cutter in the front-rear direction increases, The covering member deteriorates over time early. When the covering member deteriorates over time, the covering member that has deteriorated over time must be replaced with a new one. However, when the covering member is replaced, a part of the cutter drive unit must be disassembled, and the covering member at the factory site must be disassembled. It was extremely difficult to replace the. Further, when the bellows portion of the covering member opens and closes (expands and contracts), burrs and the like enter the bellows portion, which causes damage to the bellows portion.

Therefore, an object of the present invention is to provide a deburring device capable of maintaining drive performance and reducing the number of parts in order to solve the above technical problems.

The present invention is a deburring device for removing burrs on an object to be machined, wherein a rotary drive member for rotationally driving a blade, a drive source for moving the rotary drive member in a linear direction, and the drive source. The driving force transmitting member has a driving force transmitting member for transmitting the driving force of the driving force to the rotational driving member, and the driving force transmitting member transmits the driving force of the driving source to the rotational driving member in the linear direction of the rotational driving member. It is a link mechanism that enables the movement of the link mechanism, and the link mechanism is not covered with a covering member.

The link mechanism is characterized in that the arc motion of the drive source is converted into a linear motion and the drive force of the drive source is transmitted to the rotation drive member.

The rotary drive member includes a spindle motor, and the drive source is a servo motor.

According to the present invention, the link mechanism has a thread groove because the drive force transmitting member transmits the driving force of the drive source to the rotary drive member to enable the linear drive member to move in the linear direction. There is no part or place to be formed, and burrs do not adhere to the thread groove of the link mechanism. Therefore, it is not necessary to cover the link mechanism with a covering member such as a cover, the driving performance of the rotary driving member can be maintained, and the number of parts of the deburring device can be reduced. Further, since it is not necessary to cover the link mechanism with a covering member such as a cover, it is naturally unnecessary to replace the covering member, and the work efficiency is improved.

Further, since the link mechanism converts the circular motion of the drive source into a linear motion and transmits the driving force of the drive source to the rotary drive member, the area corresponding to the movement locus of the link mechanism is minimized and the linear motion of the rotary drive member is minimized. It is possible to move in a direction. As a result, the room for the movement of the link mechanism to interfere with other constituent members can be reduced, and the deburring device can be miniaturized.

It is a perspective view seen from obliquely above the deburring apparatus which concerns on 1st Embodiment of this invention. It is a top view of the deburring apparatus which concerns on 1st Embodiment of this invention. It is a side view of the deburring apparatus which concerns on 1st Embodiment of this invention. It is a front view of the deburring apparatus which concerns on 1st Embodiment of this invention. It is a perspective view seen from obliquely above the deburring apparatus which concerns on 2nd Embodiment of this invention. It is a top view of the deburring apparatus which concerns on 2nd Embodiment of this invention. It is a side view of the deburring apparatus which concerns on 2nd Embodiment of this invention. It is a front view of the deburring apparatus which concerns on 2nd Embodiment of this invention.

The deburring apparatus according to the 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 a work object (work) having a structure including one rotation driving member 12.

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

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

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, and separate and independent parts are connected and fixed by a fixing tool or the like to assemble. The configuration may be set.

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 so as to hang over each bearing portion. Each shaft portion 20 is a shaft extending in the axial direction (for example, the horizontal direction).

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

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

A holding member 22 that can move 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. ..

A rotation drive member 12 is fixed to the base portion 22b. The rotation drive member 12 has a power shaft 12a capable of rotating at high speed. At the tip of the power shaft 12a, a blade 24 is provided for contacting the burr formed on the object to be machined and removing the burr. The blade 24 rotates about the axis with the rotation of the power shaft 12a.

A spindle motor is preferable as the rotation drive member 12.

A drive source 26 is attached to the third base portion 14c. The drive source 26 is arranged so 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 located in a region (referred to as 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, and for example, a servo motor is preferable. In this case, the drive shaft (not shown) of the drive source 26 performs forward rotation and reverse rotation over a predetermined arc length to realize circular motion.

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

A reduction mechanism 28 for decelerating the rotation speed of the drive shaft of the drive source 26 is connected to the drive source 26. The torque can be increased by providing the reduction mechanism 28.

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 (arrow Y direction in FIG. 3), the extending length of the second base portion 14b and 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 extending length of the dead space 16 is formed. Effective utilization of the dead space 16 as an arrangement portion of the reduction mechanism 28 is also a feature of the design of the deburring device 10.

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

In the present specification, the "linear motion" includes a reciprocating linear motion in addition to a predetermined axial motion.

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.

The front end portion of the driving force transmitting member 30 is mechanically connected to the base portion 22a of the holding member 22 at the second connecting portion 40. Therefore, the driving force transmitting 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 so as to coincide with the lower surface of the first base portion 14a. That is, the first base portion 14a and the driving force transmitting member 30 are designed to be located on the same plane. As a result, the driving force transmitting member 30 does not protrude downward with respect to the first base portion 14a, which can contribute to the miniaturization of the deburring device 10. Further, the first base portion 14a also has a function of guiding the operation of the driving force transmission member 30.

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, a screw groove is not formed on the surface of the driving force transmitting member 30, and burrs and the like do not enter the screw groove and adversely affect the driving performance. Therefore, it is not necessary 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 effect of the deburring 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 makes an arc motion, and the rotation speed of the drive shaft is decelerated by the reduction mechanism 28 to drive the drive source 26. Is transmitted to the driving force transmission member 30. The driving force transmission member 30 receives the driving force of the driving source 26 and converts the arc motion of the driving shaft of the driving source 26 into a linear motion. As a result, the holding member 22 mechanically connected to the driving force transmitting member 30 makes a 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 a 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 machined, and deburring work becomes possible.

Since the driving force transmitting member 30 is composed of a link mechanism 31 that transmits the driving force of the driving source 26 to the rotational driving member 12 to enable the rotational driving member 30 to move in the linear direction, the link mechanism 31 has a thread groove. There is no part or place where a burr is formed, and burrs do not adhere to the thread groove of the link mechanism 31. Therefore, it is not necessary to cover the periphery of the link mechanism 31 with a covering member such as a cover, the driving performance of the rotary driving member 12 can be maintained, and the number of parts of the deburring device 10 can be reduced. Further, since it is not necessary to cover the periphery of the link mechanism 31 with a covering member, it is naturally unnecessary to replace the covering member, so that the work efficiency is improved at the factory site.

Since the drive shaft of the drive source 26 performs an arc motion, the area required for the movement of the drive force transmission member 30 can be reduced, and the deburring device 10 can be downsized.

The drive source 26 is arranged in the third base portion 14c so that the axial direction is the vertical direction (the Y direction of the arrow in FIG. 3). The rotary drive member 12 is arranged so as to face the front side in the horizontal direction of the drive source 26, and the rotary drive member 12 is placed on the base portion 22b of the holding member 22, so that the upper side of the base portion 22b Although an effective space 32 is formed in the effective space 32, the effective space 32 can be utilized by arranging the drive source 26 so that the axial direction is perpendicular to a part of the effective space 32. This can contribute to the miniaturization of the deburring device 10.

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

At the same time, since the second base portion 14b and the third base portion 14c function as a wall surrounding the reduction mechanism 28, burrs and the like removed from the object to be machined are blocked by the second base portion 14b and the third base portion 14c. It is possible to prevent the vehicle from colliding with the speed reduction mechanism 28. As a result, damage to the speed reduction mechanism 28 can be prevented.

As described above, the drive source 26, the deceleration mechanism 28, the drive force transmission member 30, and the rotary drive member 12 maintain the organic mechanical connection relationship, and the arrangement parts of the respective constituent members are devised. It is possible to maintain the driving performance of the rotary driving member 12 and to reduce the size of the deburring device 10 at the same time.

Next, the deburring apparatus according to the second embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the configurations that overlap with the configurations of the deburring apparatus according to the first embodiment, and the description thereof will be omitted as appropriate.

As shown in FIGS. 5 to 8, the burr removing device 10 includes two rotation driving members 12 and is a device for removing burrs on a work object (work).

The two rotary drive members 12 have the same other configurations except that the shapes of the blades 24 are different from each other. As a result, two blades 24 having different shapes can be provided at the same time, so that it is possible to deal with a plurality of machining portions of the machining object and different machining required accuracy.

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

Here, the drive source 26, the reduction mechanism 28, and the drive force transmission member 30 have a structure covered by a guard member 34. As a result, it is possible to prevent burrs removed from the object to be machined from colliding with the drive source 26, the reduction mechanism 8 and the drive force transmission member 30 and adversely affecting the drive performance.

Further, by inserting the bundled electric wiring or the like through the wiring cover 36, the electric wiring or the like can be bundled. Further, even if the burr removed from the object to be processed pops out, it is blocked by the wiring cover 36, so that the burr can be prevented from colliding with the electric wiring or the like and being damaged.

The number of rotation drive members 12 is not limited to two, and a plurality of rotation drive members 12 of three or more may be provided. However, in this case, it is necessary to separately provide a drive source, a deceleration mechanism, and a drive force transmission member so that the rotation drive member 12 can move along the axial direction of the shaft portion 20.

The guard member 34 and the wiring cover 36 may be provided in the deburring device 10 of the first embodiment.

Each of the embodiments 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 Rotation drive member 12a Power shaft 14 Base member 14a First base part 14b Second base part 14c Third base part 16 Dead space 18 Support part 20 Shaft part 22 Holding member 22a Base part 22b Base part 24 Blade 26 Drive source 28 Deceleration mechanism 30 Driving force transmission mechanism 31 Link mechanism 32 Effective space 34 Guard member 36 Wiring cover 38 First connection part 40 Second connection part

Claims (3)

A deburring device for removing burrs on the object to be processed.
A rotary drive member that drives the blade to rotate,
A drive source for moving the rotary drive member in a linear direction,
A driving force transmitting member that transmits the driving force of the driving source to the rotary driving member, and
Have,
The driving force transmitting member is a link mechanism that transmits the driving force of the driving source to the rotational driving member to enable the rotational driving member to move in a linear direction.
The link mechanism is a deburring device characterized in that it is not covered with a covering member. The deburring device according to claim 1, wherein the link mechanism converts an arc motion of the drive source into a linear motion and transmits the drive force of the drive source to the rotation drive member. The rotation drive member has a spindle motor and has a spindle motor.
The deburring device according to claim 1 or 2, wherein the drive source is a servomotor.

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