JP2000176740A - Burr removing device and burr removing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove burrs generated in the direction of the leaves of a cast item. SOLUTION: A burr removing press is provided with a loading board 8 of work W; a clamp 10 having a guide surface 10a with the angle same as the leaves θ of the work W; and a guide 12 moving along the guide surface 10a of the clamp 10. The guide 12 is fixed to a cutter 9. After fixing the work W between the loading board 8 by abutting the clamp 10 to the upper surface of the work W, the guide 12 is moved along the guide surface 10a of the clamp 10. As a result, the cutter 9 moves in the direction burrs Wa are continued, following the leaves of a product surface. The burrs Wa can be removed without hurting the product surface. In this case, the operation of the cutter 9 can correspond with the various formes of works by changing the form of the clamp 10.

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 generated on components.

[0002]

2. Description of the Related Art When casting is performed using a split mold to form a shape having an undercut portion, burrs may be generated in a draft direction. When removing burrs extending in the direction of the draft, consider the draft and move the cutter in the direction in which the burrs are continued at predetermined intervals so that the product surface is not damaged. ,
A cutter having a shape following the product removes the burr by exposing the product surface in a direction perpendicular to the burrs (that is, a direction perpendicular to the direction of the draft).

[0003]

However, in the former method, residual burrs always occur, and a separate deburring step is required to remove all burrs. Also,
In the latter method, a part having a predetermined length and including a part having a substantially constant diameter and a part that suddenly expands in diameter, such as an automobile transmission case, is formed with a shape in order to prevent burrs from remaining. However, it is necessary to remove burrs at relatively constant portions and burrs at portions where the shape changes rapidly, using different cutters. Therefore, a cutter having a plurality of different shapes is required, and the shape of the cutter also needs to be changed each time a cast part to be deburred is changed. Also,
Since each of the plurality of deburring cutters is driven by a different deburring device, a plurality of deburring devices and a transfer device for transferring a cast component between the deburring devices are required.
Then, the deburring operation for one cast part has been performed in multiple steps.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to perform a deburring operation economically and accurately. In addition, by performing the deburring operation in one continuous step, the number of steps required for deburring can be reduced, and the equipment cost and installation space of the deburring apparatus can be reduced.

[0005]

According to a first aspect of the present invention, there is provided a deburring apparatus for removing a burr of a part, the burr removing apparatus corresponding to a draft angle of the part. A cutter is provided that moves in a continuous direction of burrs while following the product surface.

According to the present invention, the cutter moves in a continuous direction of burrs following the draft angle of the product surface.
Burrs can be removed without making the shape of the cutter itself follow the shape of the product.

According to a second aspect of the present invention, there is provided a deburring apparatus, comprising: a mounting table for a component; a clamp having a guide surface inclined at the same angle as the draft of the component; And a guide that moves, and the cutter is supported by the guide.

According to this configuration, the component is fixed to the mounting table by the mounting table and the clamp. When the guide is moved along the guide surface of the clamp, the cutter supported by the clamp moves in a direction in which burrs follow the draft of the product surface. Therefore, it is possible to remove only burrs without damaging the product surface.

Further, in the deburring apparatus according to a third aspect of the present invention, the first driving means for moving the clamp and the guide away from and closer to the mounting table, and moving the clamp relative to the guide. And second driving means.

According to this structure, first, the clamp is brought into contact with the component on the mounting table by the first driving means. Then, the component is securely fixed between the clamp and the mounting table. The relative position between the guide and the clamp can be changed by the second driving means. Then, the guide is moved with respect to the clamp after the clamp is brought into contact with the component. Then, the cutter supported by the guide moves following the draft of the part. By moving the cutter, it is possible to remove only burrs without damaging the product surface.

[0011] In addition, a deburring apparatus according to a fourth aspect of the present invention includes a cutter having a shape following the product in order to remove burrs on an inclined portion including a draft and a design shape. There are driving means for driving in a direction orthogonal to the direction in which the burrs are continuous. ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to perform the flash | burr of the part whose shape is comparatively constant, and the flash | burr of the part whose shape changes rapidly, simultaneously or continuously.

According to a fifth aspect of the present invention, there is provided a deburring method for solving the above-mentioned problem, in order to remove burrs generated in the direction of draft of a component. Using the deburring device described in the section, the part where the inclination of the product surface consists only of draft is deburred by moving the cutter in the continuous direction of the burr, and the inclination of the product surface becomes the draft and the design shape. The part including the burrs is characterized in that a cutter having a shape following the product and moving in a direction orthogonal to the direction in which burrs are continuous is deburred.

According to the present invention, in a portion where the inclination of the product surface is only the draft, the shape change of the product surface is uniquely determined only by the draft. Therefore, by moving the cutter in the direction in which burrs are continuously formed in accordance with the draft angle of the product surface, it is possible to reliably remove burrs with a versatile cutter without remaining burrs. In addition, the portion in which the inclination of the product surface includes the draft and the design shape is different from the shape of the product surface depending on individual components. By exposing the product surface in a direction perpendicular to the direction of the draft angle), it is possible to efficiently remove burrs without remaining burrs. And since the operating direction of the cutter related to the portion where the inclination of the product surface is only the draft angle is different from the cutter related to the portion where the inclination of the product surface includes the draft angle and the design shape, the parts are placed in one place. Both operations can be performed simultaneously or consecutively while being fixed to.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a deburring press as an embodiment of a deburring apparatus according to the present invention. Also,
FIG. 2 is an enlarged view of a main part of the deburring press shown in FIG. First, the structure of the deburring press will be described.

The deburring press includes a ram section 1, an upper mold section 2,
It has a side cutter section 3 and a work set section 4, each of which is supported by a frame 5. A cylinder 6 as a first driving means is fixed to an upper portion of the frame 5. The cylinder 6 raises and lowers the ram unit 1.
Further, the ram unit 1 is provided with a cylinder 7 as a second drive unit for driving the upper mold unit 2. Note that both the cylinders 6 and 7 operate using hydraulic pressure or the like as a power source.
When the thrust generated in the cylinder 6 is compared with the thrust generated in the cylinder 7, the thrust of the cylinder 6 is larger.

FIG. 2 is an enlarged view of the mounting table 8 of the upper mold section 2, the work W, and the work setting section 4. The upper mold section 2 moves up and down together with the ram section 1 (FIG. 1), and includes a cutter 9, a clamp 10, and a bracket 11. Cutter 9
The base end portion 9a is pivotally supported on the bracket 11 so as to be rotatable. The tip 9b of the cutter 9 has a cutting blade. A guide 12 that slides on the side surface 10 a of the clamp 10 is fixed to an intermediate portion of the cutter 9. In addition,
The clamp 10 is a truncated cone-shaped member whose diameter increases toward the lower end. The slope θ of the side surface 10 a of the clamp 10 (hereinafter also referred to as “guide surface”) is formed to be the same angle as the draft θ of the work W. Clamp 10
When the lower end surface of the workpiece contacts the upper surface of the workpiece W, the guide surface 10
The angle a is parallel to the product surface of the workpiece W having a draft angle. In the illustrated example, the clamp
The lower end face of 10 is a plane, and the upper surface of the work W is a horizontal plane.

Further, an elastic member 13 formed by superimposing a disc spring or the like is disposed between the arm 11a fixed to the bracket 11 and the cutter 9 to prevent the cutter 9 from swinging around the base end 9a. And is fixed with a through bolt 14 or the like. Due to the elastic force of the elastic member 13, the arm 11 is urged in a direction approaching the clamp 10, so that the guide 12 is always kept in close contact with the side surface 10a of the clamp.

Although the bracket 11 is directly fixed to the ram 1 (FIG. 1), the clamp 10 is supported by the ram 1 via the cylinder 7 (FIG. 1). Therefore, when the cylinder 7 is driven, only the clamp 10 can move up and down independently with respect to the cutter 9, the bracket 11, and the like.

In the illustrated example, the work W is an automobile transmission case. The transmission case is shown as an example of a cast component having a portion having a predetermined length and a substantially constant diameter and a portion that rapidly increases in diameter. As shown in the drawing, the work W has burrs (hatched portions in the drawing) extending in the direction of draft. In this description, reference numeral of W _b is the burr to burr generated at a portion of the product surface inclination consists only draft generated in a portion including the W _a, draft inclined product surface and design shapes . The line indicated by PL in the drawing indicates a parting line when casting the work W.

The mounting table 8 of the work setting section 4 is flat, and the center axis C of the work W coincides with the vertical direction.
The work W can be placed. Although not shown, the mounting table 8 may be provided with a concave-convex shape for preventing the work W from being displaced or a means for fixing the work W.

The side cutter section 3 shown in FIG.
The work W is supported so as to be located on the side of the work W in a state where the work W is mounted on the mounting table 8. The side cutter unit 3 includes a side cutter 15 having a shape following the product.
And an actuator 16 for moving the side cutter 15 toward the workpiece W and moving the side cutter 15 in a direction perpendicular to the burrs (that is, in a direction perpendicular to the direction of the draft). That is, the side cutter 15 recap the product surface in a direction perpendicular to the burr, is to remove the burrs W _b (FIG. 2).
A burr collection box 17 is provided below the work set unit 4.

Here, a procedure for deburring by the deburring press according to the embodiment of the present invention will be described. First, both the cylinders 6 and 7 are moved to the top dead center of the movable range. Then, the work W is mounted on the mounting table 8. Subsequently, the cylinder 7 is extended, and the upper mold 2 is moved to the lower dead center of the movable range with respect to the ram 1. At this time, the positional relationship of the clamp 10 with respect to the bracket 11 and the cutter 9 is as shown in FIG.

Subsequently, the cylinder 6 is extended and the ram 1
And the upper mold part 2 is lowered. Then, the lower end surface of the clamp 10 contacts the upper surface of the work W, as shown in FIG.
Therefore, the work W can be held and fixed between the mounting table 8 and the clamp 10. Here, when the cylinder 6 is continuously extended, the thrust of the cylinder 6 overcomes the thrust of the cylinder 7, and the cylinder 7 is gradually pushed back. As described above, the bracket 11 is directly fixed to the ram 1, but the clamp 10 is connected to the ram 1 via the cylinder 7.
The bracket 11 is further lowered while the position of the clamp 10 abuts on the upper surface of the work W and is fixed. At this time, the pressure applied to the work W by the clamp 10 is increased by the resistance when the cylinder 7 is pushed back as compared with the time when the lower end surface of the clamp 10 is simply brought into contact with the upper surface of the work W. Can be fixed more reliably.

When only the bracket 11 is further lowered while the height of the clamp 10 is constant, the bracket 11
Arm 11a fixed to the cutter, the cutter 9 pivotally supported by the bracket 11, the guide 12 fixed to the cutter 9, the arm 11
The elastic member 13 disposed between the a and the cutter 9 also descends together with the bracket 11. Then, as shown in FIG. 3, the relative position between the guide 12 and the clamp 10 that slides on the side surface 10a of the clamp 10 changes, and the guide 12
Move along 10a (guide surface). As described above, the gradient θ of the guide surface 10a of the clamp 10 is equal to the draft θ of the workpiece W.
It is formed to have the same angle as. Therefore,
As shown by the dotted line in FIG.
The burrs are moved in a continuous direction according to the draft angle of the product surface. At this time, the amount of movement of the cutter tip 9b in the direction away from the center axis C of the workpiece W is indicated by the reference symbol L in FIG.

[0026] As described above, after removing the burr W _a a cutter 9, raises the cylinder 6 is moved upward to the cutter 9 again. Then, the tip 9b of the cutter 9
Is returned to the direction approaching the center axis C of the work W again by the elastic force of the elastic member 13. Subsequently, in a state where the work W is held between the worktable 8 and the clamp 10, or in a state where the clamp 10 is separated from the work W and the work W is fixed by the fixing means of the worktable 8, the actuator 16 (FIG. Drive). And burr W _b with side cutter 15
Direction perpendicular to the (i.e., the direction perpendicular to the direction of the draft) By surround the product surface, to remove the burrs W _b. Incidentally, Bali W _a, W _b together, after being removed from the product surface falls into collection box 17 (FIG. 1).

Finally, the cylinders 6 and 7 are both moved to the top dead center of the movable range, thereby returning to the initial state. Then, the work W is removed from the mounting table 8, the next work W is set, and the next deburring operation is performed.

The operation and effect obtained from the embodiment of the present invention having the above configuration are as follows.

The deburring press comprises a mounting table 8 for a work W, a clamp 10 having a guide surface 10a having the same angle as the draft θ of the work W, and a guide 12 moving along the guide surface 10a of the clamp 10. It has. The guide 12 is fixed to the cutter 9. Therefore, after the clamp 10 is brought into contact with the upper surface of the work W to fix the work W, the guide 12 is moved along the guide surface 10a of the clamp 10,
Arm moves following the draft θ product surface to successive direction of burrs W _a. This movement of the cutter 9, without damaging the product surface, and without causing burrs remaining, it is possible to remove the burrs W _a. The operation of the cutter 9 can be adapted to work of various shapes by changing the shape of the clamp 10.

In addition, the work for fixing the work W and the burr W
_The operation of removing a can be performed continuously by lowering the upper mold portion 2. At this time, the cutter 9 is following the draft θ product surface, so that movement in the direction of consecutive burr W _a, eliminates the need for a shape following the shape of the cutter itself the product, the versatility cutter You can have. Then, even if the shape of the work is changed, it is not necessary to change the cutter 9.

The deburring press is provided with a cylinder 6
And a cylinder 7. The entire upper mold section 2 can be moved up and down by the cylinder 6,
The relative position between the guide 12 and the clamp 10 can be changed by the cylinder 7. Also, comparing the thrust generated in the cylinder 6 with the thrust generated in the cylinder 7,
Since the thrust of the cylinder 6 is larger, when the cylinder 6 is continuously operated even after the lower end surface of the clamp 10 abuts on the upper surface of the work W, the thrust of the cylinder 6 overcomes the thrust of the cylinder 7, and 7 is gradually pushed back. At this time, the pressure applied to the work W by the clamp 10 is increased by the resistance when the cylinder 7 is pushed back as compared with the time when the lower end surface of the clamp 10 is simply brought into contact with the upper surface of the work W. Can be fixed more reliably. Accordingly, the movement of the cutter 9 causes the burr W _a
Even when removing, and prevent displacement of the workpiece W, it is possible to reliably remove the burrs W _a without scratching the workpiece W.

Furthermore, after removing the burr W _a a cutter 9, it is possible to remove the burrs W _b in the side cutter 15. At this time, since the operating direction of the cutter 9 is the vertical direction in FIG. 1 and the moving direction of the side cutter 15 is the horizontal direction in FIG. It can be arranged in a good manner in the device. Then, in the state where the table 8 were fixed workpiece W, and the work of removing burrs W _a, it is possible to continuously perform the operation for removing burrs W _b. As described above, since the cutter 9 and the side cutter 15 can be provided in one deburring press, a plurality of conventional deburring devices and a transfer device for transferring a cast component between the deburring devices are unnecessary. In addition, it is possible to reduce the equipment cost and installation space of the deburring apparatus. Further, by continuously performing the deburring operation on one work W, the man-hour required for deburring can be reduced.

If the clamp 10 of the deburring press has a guide surface 10a in a part, the clamp 10 does not need to be in the shape of a truncated cone as in the illustrated example. Although not shown, the guide 12 and the guide surface 10a of the clamp 10 are
If a structure in which the guide is slidable by a groove or a linear guide is adopted, the arm 11a of the bracket 11, the elastic member 1
3. The through bolt 14 can be omitted. Furthermore, in the embodiment of the present invention, the deburring of a cast part has been described as an example. However, the draft of a part having a draft for facilitating release of a product, such as a resin molded product, is also described. Can be effectively removed.

[0034]

According to the present invention, the following effects are obtained. First, according to the deburring apparatus according to the first aspect of the present invention, the cost of the cutter can be reduced and the deburring can be performed with high accuracy by giving the cutter versatility. Further, even if the cast component from which burrs are removed is changed, burrs generated in the direction of the draft of the component can be removed without replacing the cutter.

Further, according to the deburring apparatus of the second aspect of the present invention, it is possible to remove burrs generated in the direction of the draft angle of the part without damaging the product surface with the versatile cutter. Becomes

Further, according to the deburring apparatus according to the third aspect of the present invention, it is possible to securely fix the components, and it is possible to remove only the burrs without damaging the product surface. .

In addition, according to the deburring apparatus according to the fourth aspect of the present invention, it is possible to simultaneously or continuously perform the burr of a portion having a relatively constant shape and the burr of a portion where the shape changes rapidly. This eliminates the need for a plurality of deburring devices as in the related art, and a transport device for exchanging cast parts between the deburring devices. Therefore, it is possible to reduce the equipment cost and the installation space of the deburring apparatus. Further, by continuously performing the deburring operation on one work W, the number of steps required for deburring can be reduced.

Further, according to the deburring method according to the fifth aspect of the present invention, it is possible to perform the deburring operation with high accuracy in one continuous step, so that the number of steps required for deburring can be reduced. it can. In addition, it is possible to reduce the equipment cost and installation space of the deburring device.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a deburring press according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the deburring press shown in FIG.

FIG. 3 is an operation explanatory view of a main part of the deburring press shown in FIG. 2;

[Explanation of symbols]

1 Ram part 2 Upper die part 6 Cylinder 7 Cylinder 8 Mounting table 9 Cutter 10 Clamp 10a Side surface 12 Guide W Work W _a Burr θ Draft

Continued on the front page (72) Inventor Masaaki Sugiyama 4-52 Honchi-cho, Toyota-shi, Aichi Prefecture Ryoei Engineering Co., Ltd. F-term (reference) 3C050 FB08 FB13 FB14 FC10

Claims (5)

[Claims] 1. A deburring apparatus for removing burrs from a part, wherein the burr removes burrs from the part while following a product surface in accordance with a draft angle of the part.
A deburring device comprising a cutter that moves in a direction in which burrs are continuous. 2. A component mounting table, a clamp having a guide surface inclined at the same angle as the draft angle of the component, and a guide moving along the guide surface of the clamp, wherein the cutter controls the cutter by the guide. The deburring apparatus according to claim 1, wherein the deburring apparatus is supported. 3. The apparatus according to claim 1, further comprising: first driving means for moving the clamp and the guide away from and closer to the mounting table; and second driving means for moving the clamp with respect to the guide. The deburring device according to claim 1. 4. A cutter having a shape following the product in order to remove burrs on an inclined portion including a draft and a design shape, and driving means for driving the cutter in a direction orthogonal to a continuous direction of burrs. The deburring apparatus according to any one of claims 1 to 3, further comprising: 5. A method for removing burrs generated in the direction of draft of a part, wherein the method comprises the steps of:
Using the deburring device described in the section, the part where the inclination of the product surface consists only of draft is deburred by moving the cutter in the continuous direction of the burr, and the inclination of the product surface becomes the draft and the design shape. A deburring method characterized in that a part including the part is deburred by a cutter having a shape following the product and moving in a direction orthogonal to a continuous direction of burrs.