JP2006272435A - Apparatus and method for removing casting fin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and method for removing a casting fin with which the removal of the casting fin can surely be realized. <P>SOLUTION: This apparatus for removing the casting fin comprises: a movable blade 20 which is housed in a hole 16 formed in the work facing plate 11 of a press blade 2A in a retractable manner and in which the blade edge part 21 is formed toward the other direction F; a spring 28 pressing the movable blade 20 against the opening hole direction of the hole 16; and a regulating means 25 carrying out regulations so that displacement of the movable blade 20 by the spring 28 stays at a position where the blade edge part 21 of the movable blade 20 is protruded by a prescribed amount from the work facing plate 11. In the case of displacing the press blade 2A to the one direction E, the press blade 2A cuts off the casting fin 5 and on the other hand, in the case of displacing the press blade 2A to the other direction F, the movable blade 20 which is protruded from the press blade 2A by spring force of the spring 28 and whose position is regulated by the regulating means 25 by the prescribed projecting length, removes the remaining casting fin 5b left in the cutting-off treatment by the press blade 2A. Therefore, the casting fin 5 can surely be removed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a casting burr removing apparatus and a casting burr removing method for removing a casting burr formed on a workpiece.

As an example of a conventional cast burr removing device, there is a device shown in FIGS. 4 and 5 (see Patent Document 1). As shown in FIGS. 4 and 5, the cast burr removing device 1 is generated in the workpiece 4 (product) when the base 3 provided with the press blade 2 moves downward in FIG. The cast burr 5 is cut.
JP-A-6-246430

  By the way, in the prior art described above, even if the cast burr 5 is cut, the cast burr 5 is not completely removed from the workpiece 4. The cast burr 5 is separated from the workpiece 4 by cutting the press blade 2 and is actually removed from the workpiece 4, for example, a so-called cutting burr 5a, and is not removed from the workpiece 4 at this stage and remains on the workpiece 4 side. In other words, only the cut burr 5a is removed at this stage.

Originally, it is desirable that all the cast burrs 5 be removed by the cutting process of the press blade 2, but the burrs are left (the remaining burrs 5b remain) for the following reason.
That is, if it is going to absorb the dispersion | variation for every model number of the workpiece | work 4 (product), it is necessary to escape the press blade 2 with respect to the workpiece | work 4 (namely, providing a clearance gap between the workpiece | work 4 and the press blade 2). When the cutting process of the press blade 2 is performed in the state as described above, the remaining burr 5b remains.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a casting burr removing apparatus and a casting burr removing method capable of reliably removing casting burrs.

  The invention of a cast burr removing device according to claim 1 is provided with a cutting tool that cuts the cast burr by unidirectional displacement along a cast burr forming surface of a workpiece, and a side facing the cast burr forming surface of the cutting tool. A casting burr forming surface corresponding part having a shape opposite to the shape of the casting burr forming surface obtained by viewing the casting burr forming surface in one direction. The cast burr formation is formed in a facing portion, a hole formed by opening the workpiece facing portion corresponding to the cast burr forming surface corresponding portion, and a shape formed in the one direction. A movable blade having a cutting edge having an opposite shape so as to overlap with the shape in one plane, the cutting edge being formed in a direction opposite to the one direction, and being retractably accommodated in the hole; and Spring means to press against the workpiece , Displacement of the movable blade by said spring means, characterized in that the cutting edge of the movable blade is provided with a regulating means for regulating to stay at a position a predetermined amount of projection from the blade.

  Invention of Claim 2 is a casting burr removal method using the casting burr removal apparatus of Claim 1, Comprising: The said cutting tool displaces to the said one direction with respect to the said workpiece | work, and the said cutting tool uses the said casting burr | flash. A casting burr cutting step for cutting, and a casting burr removal step for removing the casting burr by the movable blade by displacement of the cutting tool in the other direction with respect to the workpiece.

  According to the first and second aspects of the invention, when the cutting tool is displaced in one direction with respect to the workpiece, the cutting tool cuts the cast burr, while the cutting tool is displaced in the direction opposite to the one direction with respect to the work. In this case, the movable blade that protrudes from the cutting tool by the spring force of the spring means and whose position is regulated by the regulating means at a predetermined protruding length removes the casting burr remaining on the workpiece by the cutting burr cutting process of the cutting tool. For this reason, a casting burr | flash can be removed reliably.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
1 and 2, the cast burr removing device 1 </ b> A has a base 3 that is moved up and down by a drive mechanism 10. A press that cuts the casting burr 5 on the bottom surface of the base 3 by displacement in one direction E (downward in FIG. 1) along the casting burr forming surface portion 13 (casting burr forming surface) on which the casting burr 5 of the workpiece 4 is formed. A blade 2A (blade) is attached.

  The press blade 2 </ b> A forms a substantially U-shape together with the workpiece facing plate 11 and the workpiece opposite side plate 12 that are vertically fixed so as to be substantially parallel to each other on the lower surface portion of the base 3, and the workpiece facing plate 11 and the workpiece opposite side plate 12. And a connecting plate 14 connected to these. The workpiece facing plate 11 is disposed on the workpiece 4 side, and the workpiece opposite side plate 12 is disposed on the side away from the workpiece 4 with respect to the workpiece facing plate 11.

As shown in FIGS. 3 (A) and 3 (B), the workpiece facing plate 11 has a dimension that is longer than the length in the direction perpendicular to the one direction E (the front and back direction in FIG. 1) in the cast burr forming surface portion 13. Has been. Further, the workpiece facing plate 11 has a casting burr forming surface corresponding portion having an opposite shape so as to overlap a casting burr forming surface unidirectional shape 50 obtained by viewing the casting burr forming surface portion 13 (cast burr forming surface) in one direction E. 51 is provided at a substantially central portion of the workpiece facing plate 11 in the longitudinal direction (front and back direction in FIG. 1). The casting burr forming surface corresponding portion 51 has a convex shape that overlaps the concave shape when the one-way shape 50 of the casting burr forming surface is, for example, a concave shape.
In this apparatus, when the press blade 2A is displaced in one direction E as described above, the casting burr 5 is cut, but the workpiece facing plate 11 provided in the press blade 2A performs the cutting function of the casting burr 5. ing.
The direction opposite to the one direction E (the lower direction in FIG. 1) (the upper direction in FIG. 1) is hereinafter referred to as the other direction F as appropriate.

  A hole 16 that opens toward the workpiece 4 is formed in the workpiece facing plate 11. The movable blade 20 is movably accommodated in the hole 16. The movable blade 20 is housed in the hole 16 and is formed on the distal end side of the movable blade main body 22 having a blade edge 21 on the distal end side. The flange 23 has a large length dimension (length in the vertical direction in FIG. 1) and a size that can be locked to the workpiece facing plate 11. The movable blade 20 is arranged so that the blade edge 21 of the movable blade body 22 is on the workpiece 4 side and the flange 23 is on the workpiece opposite plate 12 side in the workpiece facing plate 11.

  The blade edge 21 of the movable blade body 22 is provided toward the base 3 side (the other direction F). Since the direction of the cutting edge 21 is set in this way, the cutting edge 21 does not cut the cast burr 5 when the press blade 2A moves in one direction E, as will be described later, and moves in the other direction F. In addition, the cast burr 5 is cut.

  Further, the cutting edge 21 has an opposite shape so as to overlap the cast burr forming surface unidirectional shape 50. By setting the cutting edge 21 in such a shape, as will be described later, by moving in the other direction F while being pressed by the spring 28, the casting burr 5 is formed over the entire length direction of the casting burr forming surface portion 13. Even if formed, the cutting burr 5 can be cut by the stroke of the press blade 2A (blade edge 21) once in the other direction F.

  In the vicinity of the hole 16 in the connecting plate 14 of the press blade 2A, a groove 24 extending in the direction in which the hole 16 is formed (left and right direction in FIG. 1) is formed. It comes to fit. The movable blade 20 is movable as described above with the movable blade body 22 housed in the hole 16, but the movement in the right direction in FIG. 2 is caused by the flange 23 abutting against the workpiece facing plate 11. In this state, the cutting edge 21 of the movable blade body 22 is in a state of protruding a predetermined amount from the workpiece facing plate 11. In the present embodiment, the flange 23 and the workpiece facing plate 11 constitute the restricting means 25.

  Since the cutting edge 21 of the movable blade body 22 is provided toward the base 3 side (the other direction F) as described above, it rises while being pressed against the workpiece 4 by the spring 28 (moves in the other direction F). Can be cut to the workpiece 4 side portion, but even if it is pressed against the workpiece 4 by the spring 28, the workpiece 4 side portion is not cut (cannot be done) when lowered (moving in one direction E). It is like that.

  A shaft member 30 is attached to the workpiece opposite side plate 12 of the press blade 2A. The shaft member 30 has a tip portion extending toward the hole 16. An orthogonal shaft 31 that is orthogonal to the shaft member 30 is attached to the tip of the shaft member 30. An orthogonal shaft 31 of the shaft member 30 is inserted into a long hole 32 formed in the movable blade main body 22 and moves the movable blade 20 while supporting the movable blade 20 together with the workpiece facing plate 11 (moving in the left-right direction in FIG. 2). ).

  A spring 28 (spring means) is interposed between the workpiece opposite side plate 12 and the flange 23, and the movable blade 20 is pushed in the direction of the hole 16, and is pushed against the cast burr forming surface portion 13 of the workpiece 4. ing. As described above, the position of the movable blade 20 is regulated by the regulating means 25. However, in the state in which the position of the movable blade 20 is regulated (the state where the flange 23 is in contact with the workpiece facing plate 11), the cutting edge 21 of the movable blade body 22 is As described above, the press blade 2A protrudes from the workpiece facing plate 11 by a predetermined length.

In the cast burr removing apparatus 1A configured as described above, the workpiece 4 is held at a predetermined position, and the press blade 2A is lowered so as to follow the cast burr forming surface portion 13 of the workpiece 4. When the press blade 2A is lowered, the workpiece facing plate 11 of the press blade 2A is in contact with the cast burr forming surface 13 while the tip portion (blade tip 21) of the movable blade body 22 is in contact with the cast burr forming surface portion 13 by the pressing force of the spring 28. 5 abuts. Thus, when the workpiece opposite side plate 12 of the press blade 2A comes into contact with the casting burr 5, the casting burr 5 is cut (cast burr cutting step), a part (cut burr 5a) is removed, and the other part (remaining part) The burr 5b) is left on the workpiece 4.
When the press blade 2 </ b> A is lowered, the distal end portion (blade edge 21) of the movable blade body 22 comes into contact with the cast burr forming surface portion 13 by the pressing force of the spring 28 as described above. Depending on the protruding state, the movable blade body 22 may be displaced to the left in FIG. 2 against the spring force of the spring 28, thereby forming a gap 40 between the flange 23 and the press blade 2 </ b> A.

Subsequently, the press blade 2A is raised. When the press blade 2A is lifted, the cutting edge 21 of the movable blade body 22 rises while being pressed against the cast burr forming surface portion 13 by the spring force of the spring 28. 5b is cut and removed from the workpiece 4 (casting burr removing step).
The casting burr 5 can be reliably removed from the workpiece 4 by the above-described processing.

  In the above embodiment, the case where the workpiece 4 is fixed and the press blade 2A moves up and down with respect to the workpiece 4 is taken as an example. Instead, the press blade 2A is fixed and the workpiece is fixed to the press blade 2A. You may comprise so that the casting burr | flash 5 may be removed by moving 4 up and down.

It is a figure which shows typically the cast burr removal apparatus which concerns on one embodiment of this invention. It is a figure shown with the partial cross section for demonstrating an effect | action of the cast burr removal apparatus of FIG. FIG. 2 is a perspective view schematically showing the press blade and the movable blade of FIG. 1 in (A) and the workpiece of FIG. 1 in (B). It is a figure which shows typically an example of the conventional casting burr removal apparatus. It is a figure which shows typically the effect | action of the cast burr removal apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A ... Cast burr removal apparatus, 2A ... Press blade (cutting tool), 4 ... Work, 5 ... Cast burr, 5a ... Cutting burr, 5b ... Remaining burr, 13 ... Cast burr formation surface part (cast burr formation surface), 11 ... Work Counter plate (work facing part), 16 ... hole, 20 ... movable blade, 25 ... regulating means, 28 ... spring (spring means),
50: Cast burr forming surface unidirectional shape, 51: Cast burr forming surface corresponding part.

Claims (2)

A cutting tool for cutting the cast burr by unidirectional displacement along the cast burr forming surface of the workpiece;
The cutting tool is provided on the side facing the casting burr forming surface, and the shape obtained in the one direction overlaps with the casting burr forming surface in one direction obtained by viewing the casting burr forming surface in the one direction. A workpiece facing portion including a cast burr forming surface corresponding portion having an opposite shape to
A hole formed by opening the workpiece facing portion toward the workpiece in the portion where the cast burr forming surface corresponding portion is formed,
The shape obtained in the one direction has a cutting edge having an opposite shape so as to overlap with the one-way shape of the cast burr forming surface, and the cutting edge is formed in a direction opposite to the one direction, and appears and disappears in the hole. Movable blades that can be stored,
Spring means for pressing the movable blade toward the workpiece;
A cast burr removing device comprising: a restricting means for restricting the displacement of the movable blade by the spring means so that the cutting edge of the movable blade stays at a position protruding a predetermined amount from the cutting tool. A casting burr removing method using the casting burr removing apparatus according to claim 1,
A casting burr cutting step in which the cutting tool is displaced in the one direction with respect to the workpiece and the cutting tool cuts the casting burr;
A casting burr removal method comprising: a casting burr removal step in which the movable blade removes the casting burr by displacement of the cutting tool relative to the workpiece in a direction opposite to the one direction.

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