JP4733791B2 - Deburring device - Google Patents

Description

  The present invention relates to a deburring device for cast products such as aluminum die-cast products.

In aluminum die-cast products, burrs are generated in the gate part, overflow part and parting line. Among these, it is known that the gate portion and the overflow portion are folded at a large portion by a punch, and then the remaining portion is removed by a cutting tool or a polishing tool such as a router or a file (see Patent Documents 1 and 2).
JP 2007-144562 A JP 2001-347362 A JP 2001-341053 A

FIG. 7 shows a conventional deburring process for an aluminum die-cast product a which is an example of such a cast product, and a parting line burr b generated along the parting line is cut off by the blade part d of the rotary tool c. . FIG. 8 shows several examples of conventional blade portions, A is a parallel blade portion d, B is a spiral blade portion d, and C is a file-shaped blade portion d.
By the way, as in each of the conventional examples described above, if deburring is performed using a cutting tool such as a leuter or a file or a polishing tool, the product surface may be partially cut together with the burr.
In addition, it is necessary to process the entire circumference of the product along the parting line. However, when the shape is complicated, it is necessary to perform it manually, and automation is difficult.
Therefore, the present application aims to enable automation without causing damage to the product surface.

In order to solve the above-mentioned problem, the invention of claim 1 relating to a deburring device is an apparatus for removing burrs generated on a parting line of a cast product.
A rotating rod having a rotating surface pressed against the parting line ;
A pressing portion that presses the rotating rod against the casting product side;
The rotating rod is tapered with respect to the rotation axis of the rotating rod,
The surface of revolution formed around the axis of rotation, said not blade portion is formed on the surfaces in contact to the casting, and Ri Do from harder than the material of the casting material,
The contact portion of the rotating surface is changed in the axial direction according to the radius of the casting that the rotating surface contacts .

Invention Oite to the claim 1 of claim 2, wherein the rotational rod with the pressing portion is arranged offset to each other is arranged on both sides of the said casting Rutotomoni the casting direction of movement,
The cast product is moved between the left and right rotating rods , and after deburring on one side, deburring on the other side is performed .

A rotating rod that presses the rotating surface against the product along the parting line, removing burrs generated on the parting line, and the rotating rod has no blades on the rotating surface that contacts the product. There is no risk of overcutting or other trauma. Also, if the rotating rod is pressed against the parting line and moved along the parting line, it can be deburred, so even if the product surface has a complicated round shape, it will follow and move while maintaining contact. Can be automated.

In addition, if a plurality of rotating rods are provided, arranged on the left and right sides of the product, and the left and right rotating rods are shifted in the axial direction with respect to the intermediate line, the product is pressed by the rotating rods from the left and right. The rod contact can be reliably maintained. Moreover, the movement of the product can be further reduced by shifting back and forth.

  An embodiment will be described below with reference to the drawings. FIG. 1 shows an example in which the cast product is an aluminum die-cast product 1, and FIG. 2 is a sectional view taken along line 2-2. The aluminum die-cast product 1 includes a small end portion 2 and a large end portion 3 and an arm portion 4 for connecting them. Reference numeral 5 denotes a dipper, which forms a protrusion as a part of the product. The burrs in the gate portion have been removed in advance. The aluminum die-cast product 1 is made of an aluminum alloy, and the outer peripheral surface 6 is a curved surface whose curvature changes.

  As shown in FIG. 2, the outer peripheral surface 6 of the aluminum die cast product 1 has a taper shape projecting outward toward the parting line 7 in the cross section, and a thin film-like parting along the parting line 7. A line burr 8 is formed.

  FIG. 3 shows a deburring device 10 according to the present embodiment. In this example, the deburring device 10 is arranged on the left and right with the aluminum die cast product 1 interposed therebetween. The deburring device 10 includes a rotating rod 11, a rotation driving unit 12 for rotating the rotating rod 11, and a pressing unit 13 including an air cylinder for pressing the rotating rod 11 against the aluminum die cast product 1 side. The left and right deburring apparatuses 10 are arranged so as to be shifted in the front-rear direction (the movement direction is the front) along the movement line L of the aluminum die cast product 1.

  FIG. 4 shows the rotating rod 11, A is a perspective view, and B is an axial cross section of the main part. The rotating rod 11 has a round bar-like small-diameter portion 14 and a large-diameter portion 15 as shown in FIG. The rotating rod 11 is not limited to such a two-stage structure including the small-diameter portion 14 and the large-diameter portion 15 and may be configured in more stages as necessary. Also, the length of each step can be freely set. The side surface of the small diameter portion 14 is a surface that is pressed against the burr at the time of deburring, and forms a rotation surface 16 formed around the rotation axis C. The base outer diameter in the vicinity of the large diameter portion 15 is D1, and the tip outer diameter is D2. (D1> D2) and a tapered shape gradually changing toward the tip. The small-diameter portion 14 and the large-diameter portion 15 are formed integrally or separately. In particular, the small-diameter portion 14 is formed of a steel material that is harder than the aluminum die cast product 1. Further, as shown in B of the figure, the small-diameter portion 14 has a solid round bar shape, and the outer surface thereof forms a rotating surface 16 that is a portion in contact with the aluminum die-cast product.

The surface of the rotating surface 16 is smooth and is different from the one having a blade portion such as a router or a file (see FIG. 8). Further, the rotation axis C is tapered, and the tip side has a small diameter. When tapered in this manner, the outer diameter of the rotating surface 16 continuously changes from the minimum diameter portion at the tip toward the boundary with the large diameter portion 15 at the other end. depending on the size, if by changing the contact portion of the rotating surface 16 in the axial direction, sufficiently to allow a contact always optimal ares.

  When the minimum radius on the outer peripheral surface 6 of the aluminum die-cast product 1 is 3 radius, the minimum diameter (D2) of the small diameter portion 14 is set to 6φ, and deburring can be performed while making contact with the depth of the minimum radius portion so that a non-contact portion does not occur. It is like that. However, the setting of the outer diameter on the rotating surface 16 can be arbitrarily set according to the minimum radius on the outer peripheral surface 6 to be deburred. Further, by making the side surface of the small diameter portion 14 into a tapered shape, the pressing portion of the small diameter portion 14 is appropriately moved in the axial direction with respect to different shape portions on the pressing portion 13 side using a single rotating rod 11. This can be done by adapting R. The rotation driving unit 12 is a motor for rotating the rotating rod 11. By rotating the rotating rod 11, the frictional resistance with the outer peripheral surface 6 to be pressed can be reduced. In addition, an air tool that is rotationally driven by high-pressure air is advantageous because the drive source can be shared with the pressing portion 13.

  The pressing unit 13 allows the cylinder rod 17 supporting the rotation driving unit 12 to be extended and contracted by a compressed air source 18, and the rotating rod 11 also presses the rotating surface 16 so that the rotating surface 16 contacts the outer peripheral surface 6 with a relatively weak force. For example, the pressing force is set to about 0.3 kgf / cm 2 to prevent the outer peripheral surface 6 from being damaged. However, this force is only an example, and can be appropriately adjusted within a range where deburring can be performed and damage to the outer peripheral surface 6 can be prevented.

  FIG. 5 shows a robot 20 that moves the aluminum die-cast product 1. The aluminum die-cast product 1 is supported by a robot hand 21 and is freely controlled in posture, and moves between the left and right deburring devices 10. .

  FIG. 6 shows a process of removing the parting line burrs 8 of the aluminum die cast product 1. In this example, a single rotating rod 11 is used. First, on the left side, the rotating rod 11 is moved toward the small end portion 2 → the arm portion 4 → the overflow portion 5.

  At this time, the rotating rod 11 is constantly pressed against the parting line 7 of the outer peripheral surface 6 by the pressing portion 13 with a relatively weak force, so that when the rotating rod 11 moves along the parting line 7, The relatively thin film-like parting line burr 8 is easily removed by the rotating surface 16 that contacts while rotating.

  At this time, since the rotating surface 16 of the rotating rod 11 that contacts the product is smooth, there is no possibility of causing damage such as scraping off the outer peripheral surface 6 to impair the surface roughness. Further, since the pressing is performed with a relatively weak force, the contact between the rotating surface 16 of the rotating rod 11 and the outer peripheral surface 6 is always maintained, and the frictional resistance is reduced by rotating, thereby causing damage to the surface of the outer peripheral surface 6 and the like. Adverse effects can be avoided.

  When the L-side parting line burr 8 is removed, the R-side parting line burr 8 is similarly removed with the rotating rod 11 in the order of the small end portion 2 → the arm portion 4 → dipper 5. Thereby, the parting line burr | flash 8 in the perimeter of the parting line 7 can be removed.

  Further, since the minimum diameter (D2) in the small diameter portion 14 of the rotating rod 11 coincides with 6φ and the minimum radius 3R of the outer peripheral surface 6, contact can be reliably maintained up to the minimum radius portion, and the rotary surface 16 is the surface of the outer peripheral surface 6. The parting line burr 8 will not be removed.

  As shown in FIG. 3, when the deburring device 10 is arranged on the left and right of the aluminum die cast product 1 and is shifted back and forth, the parting line burr 8 can be removed at the same time on the left and right, and the posture change of the aluminum die cast product 1 can be changed. It can be reduced as much as possible.

  Further, since the rotating rod 11 is made of a harder steel material than the relatively soft aluminum alloy aluminum die-cast product 1, even if the outer surface of the rotating rod 11 in contact with the product is smooth, the The gland burr 8 can be removed.

In addition, it can apply not only to an aluminum die-cast product but to various cast products. However, in this case, the material of the rotating rod 11 is combined so that it is always harder than the material of the aluminum die-cast product 1.

Plan view of die-cast aluminum products 2-2 sectional view of FIG. Perspective view of deburring device Diagram showing rotating rod Robot perspective view Parting line burr removal process diagram Diagram showing conventional deburring Figure showing a conventional deburring blade

Explanation of symbols

1: Aluminum die-cast product, 6: Peripheral surface, 7: Parting line, 8: Parting line burr, 10: Deburring device, 11: Rotating rod, 12: Rotation drive part, 13: Pressing part, 14: Small diameter part , 20: Robot

Claims (2)

In an apparatus for removing burrs generated on a parting line of a cast product,
A rotating rod (11) having a rotating surface (16) pressed against the parting line ;
A pressing portion (13) for pressing the rotating rod (11) against the casting product side;
The rotating rod (11) is tapered with respect to the rotation axis (C) of the rotating rod (11),
The rotational surface (16) is formed around the rotational axis (C), it said not blade portion is formed on the surfaces in contact to the casting, and Ri Do from harder than the material of the casting material,
The deburring device according to claim 1, wherein a contact portion of the rotating surface (16) is changed in an axial direction in accordance with a radius of the casting product which the rotating surface (16) contacts . Wherein said rotating rod (11) having pressing portions (13) are arranged offset to each other is arranged on both sides of the said casting Rutotomoni the casting direction of movement,
Wherein by moving the castings between left and right of the rotary rod (11), whereas after removal side of burrs, has been deburring apparatus according to claim 1, characterized in that deburring on the other side.

Images