JP2014136284A - Polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive polishing device simplifying a structure, and capable of uniformly polishing an opening portion peripheral edge of a polished article having an opening portion.SOLUTION: A rotary device 2 is provided, which is rotated while a rotation shaft 2a is inserted in an opening portion 10a of a fuel filling pipe 10. A polishing rod 4 is provided, which is rockably journaled on a projecting end of the rotation shaft 2a at one end by a supporting shaft 4a extending in a direction intersecting the rotation shaft 2a. The polishing rod 4 is rotated with the rotation shaft 2a by the actuation of the rotary device 2, and energized in a direction separating from the rotation shaft 2a by the action of centrifugal force to press-contact with a peripheral edge of the opening portion 10a, thereby polishing the peripheral edge of the opening portion 10a.

Description

  The present invention relates to a polishing apparatus for polishing the periphery of an opening of a workpiece having a circular opening.

  Conventionally, for example, the polishing apparatus of Patent Document 1 has a circular opening and polishes the periphery of the opening of the object to be polished formed on a tapered surface whose diameter increases toward the outside. The rotating shaft is provided with a rotating device that extends up and down, and the rotating device rotates in a state where the rotating shaft is inserted from above into the opening of an object to be polished with the opening facing upward. It has become. The rotating shaft is provided with a link mechanism that expands and contracts in the axial direction of the rotating shaft by an operation like a pantograph, and the link mechanism is urged downward by a coil spring wound around the rotating shaft.

  A polishing member is provided below the link mechanism, and the link mechanism is contracted by the biasing force of the coil spring, so that the polishing member moves outward in the radial direction of the rotating shaft, thereby opening the object to be polished. Polishing is performed by pressing against the peripheral edge of the opening at an angle corresponding to the tapered surface of the peripheral edge.

JP 2012-143817 (paragraphs 0020-0034, FIGS. 1-6)

  By the way, the polishing apparatus of Patent Document 1 polishes the periphery of the opening of the object to be polished by a complicated operation due to the rotation operation of the rotation shaft and the expansion and contraction operation of the link mechanism. If the operation becomes smooth, the biasing force of the coil spring is not properly applied to the periphery of the opening via the polishing member, and there is a possibility that the polishing may vary.

  Further, the provision of the link mechanism increases the number of parts and increases the manufacturing cost.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an inexpensive polishing apparatus that can polish the periphery of the opening of the object to be polished without variation by simplifying the structure of the apparatus. It is in.

  In order to achieve the above object, the present invention is characterized in that a polishing rod attached to a rotating shaft of a rotating device so as to be swingable is pressed against the periphery of an opening of an object to be polished by centrifugal force.

  Specifically, in the polishing apparatus for polishing the periphery of the opening of the workpiece having a circular opening and the periphery of the opening being formed on a tapered surface whose diameter increases toward the outside, the following solution is provided. Measures were taken.

  That is, according to the first aspect of the present invention, the rotating shaft is projected and rotated with the rotating shaft inserted into the opening of the object to be polished, and one end of the rotating shaft on the protruding end of the rotating shaft. Is pivotally supported by a support shaft extending in a direction intersecting with the rotation shaft, and is rotated together with the rotation shaft by the operation of the rotation means, and is urged in a direction away from the rotation shaft by the action of centrifugal force, so that the periphery of the opening is formed. And a polishing rod for polishing the periphery of the opening by pressure contact.

  According to a second invention, in the first invention, a plurality of the polishing rods are axially supported by the protruding end of the rotary shaft at equal intervals around the rotary shaft.

  According to a third aspect, in the first or second aspect, the apparatus further comprises vertical movement means for moving the rotation means up and down.

  According to a fourth invention, in any one of the first to third inventions, the surface of the polishing rod is subjected to diamond-like carbon treatment or titanium carbon treatment.

  According to a fifth invention, in the fourth invention, a diamond-like carbon treatment or a titanium carbon treatment is performed over the entire surface of one end to the other end of the polishing rod.

  In the first invention, since only the polishing rod is connected to the rotating shaft of the rotating device, and there is no link mechanism as in Patent Document 1, the structure of the device is simple, and malfunction of the device caused by aging or the like is prevented. Therefore, the periphery of the opening of the object to be polished can be polished without variation. Further, since there is no link mechanism as in Patent Document 1, the number of parts of the entire apparatus is reduced, and an inexpensive polishing apparatus can be obtained.

  In the second invention, the periphery of the opening of the object to be polished can be simultaneously polished at a plurality of locations, so that the periphery of the opening can be efficiently polished.

  In the third aspect of the invention, the contact position of the polishing rod with respect to the periphery of the opening of the object to be polished can be changed in the direction of the cylinder centerline, so that the entire periphery of the opening can be reliably polished.

  In the fourth aspect of the invention, since the wear on the surface of the polishing rod is reduced, the replacement cycle of the polishing rod can be extended.

  In the fifth invention, even if the position of the polishing rod that contacts the peripheral edge of the opening of the object to be polished changes, the surface treatment portion of the polishing bar reliably contacts the peripheral edge of the opening. When polishing the periphery of the opening, the periphery of the opening can be reliably polished even if the position of the polishing rod that contacts the periphery of the opening changes due to the difference in the diameter of the opening. .

It is a polish device concerning an embodiment of the present invention, (a) shows a top view and (b) shows a front view. It is a figure which shows the surroundings of the opening part of the fuel supply pipe | tube polished with the polishing apparatus which concerns on embodiment of this invention, (a) is a top view, (b) is sectional drawing in the AA of (a). Indicates. (A) shows a state immediately after starting the polishing of the periphery of the opening, (b) shows a state in the middle of polishing the periphery of the opening, and (c) ends the polishing of the periphery of the opening. It is a front view of the polisher which shows the state just before.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.

  FIG. 1 shows a polishing apparatus 1 according to an embodiment of the present invention. The polishing apparatus 1 polishes the periphery of a circular opening 10a in a metal fuel supply pipe 10 (object to be polished, see FIG. 2) of a vehicle, and covers the opening 10a with a fuel cap (not shown). In order to improve the adhesion between the seal member S (see FIG. 2) attached to the oil filler cap, a tapered surface 10b that linearly increases in diameter toward the outside is formed on the periphery of the opening 10a. Has been.

  The polishing apparatus 1 includes a rotating device 2 (rotating means) in which a thin rod-shaped rotating shaft 2a protrudes downward, and a vertical moving device 3 (vertical moving means) for moving the rotating device 2 up and down. The device 2 is configured to rotate in a state where the rotating shaft 2a is inserted into the opening 10a of the fuel supply pipe 10.

  The vertical movement device 3 includes a cylindrical accommodation case 3a that accommodates the rotation device 2 in a state where the rotation shaft 2a protrudes from the lower end, and the rotation device with respect to the accommodation case 3a by a drive mechanism (not shown). 2 is moved up and down.

  A pair of thin rod-shaped polishing rods 4 are provided on the side of the rotating shaft 2a with the rotating shaft 2a interposed therebetween, and one end of the polishing rod 4 is connected to the protruding end (lower end) of the rotating shaft 2a. It is pivotally supported by a support shaft 4a extending in a direction intersecting 2a. That is, the two polishing rods 4 are supported at the protruding end of the rotary shaft 2a at equal intervals around the rotary shaft 2a.

  The entire surface of the polishing rod 4 from one end to the other end is subjected to diamond-like carbon treatment.

  Further, a control device 5 is connected to the rotating device 2 and the vertical motion device 3, and the control device 5 outputs a rotational operation signal to the rotational device 2 and moves up and down to the vertical motion device 3. A dynamic signal is output.

  Then, with the rotating shaft 2 a of the rotating device 2 inserted into the opening 10 a of the fuel supply pipe 10, the control device 5 sends a rotation operation signal to the rotating device 2, and a vertical motion signal to the vertical moving device 3. As shown in FIG. 3, the polishing rods 4 are rotated together with the rotating shaft 2a by the operation of the rotating device 2 and are biased and inclined in the direction away from the rotating shaft 2a by the action of centrifugal force. In addition to being pressed against the periphery of the opening 10a, the vertical movement device 3 is actuated to move up and down together with the rotary shaft 2a so as to be inclined along the tapered surface 10b.

  When polishing the peripheral edge of the opening 10a of the fuel supply pipe 10, the polishing liquid in which a high purity silicon carbide or alumina chromium oxide crystal powder is mixed with rust preventive oil is used to open the opening using a polishing liquid supply device (not shown). 10a is polished while being supplied to the periphery.

  Next, the polishing of the periphery of the opening 10a of the fuel supply pipe 10 by the polishing apparatus 1 will be described.

  First, the fuel supply pipe 10 is positioned with a posture in which the opening 10a faces upward using a jig (not shown).

  Next, the vertical movement device 3 is actuated by the control device 5, and the rotary shaft 2a is moved downward to be inserted into the opening 10a.

  After that, as shown in FIG. 3A, the control device 5 operates the rotating device 2 to rotate the rotating shaft 2a. Then, each polishing rod 4 rotates with the rotating shaft 2a and tilts in a direction away from the rotating shaft 2a due to the action of centrifugal force, and presses the periphery of the opening 10a (the lower end side of the tapered surface 10b) to thereby place the portion. Polish for a predetermined time.

  Thereafter, the control device 5 operates the vertical movement device 3 to move the rotation device 2 upward, and as shown in FIG. 3B, the polishing rod 4 rotates and is inclined in a direction away from the rotation shaft 2a. If it becomes the attitude | position along the surface 10b, the upward movement of the said rotation apparatus 2 will be stopped, and the said location will be grind | polished for each predetermined time with each grinding | polishing rod 4.

  Thereafter, the controller 5 operates the up-and-down moving device 3 to move the rotating device 2 upward, and as shown in FIG. 3C, the polishing rod 4 is inclined further away from the rotating shaft 2a while rotating. Then, the rotation of the rotating device 2 is stopped in a state where it comes into contact with the upper end side of the tapered surface 10b, and the portion is polished by the polishing rods 4 for a predetermined time to finish polishing the periphery of the opening 10a.

  As described above, according to the embodiment of the present invention, only the polishing rod 4 is connected to the rotating shaft 2a of the rotating device 2 and there is no link mechanism as in Patent Document 1, so the configuration of the polishing device 1 is simple and aged. The malfunction of the polishing apparatus 1 caused by deterioration or the like can be suppressed, and the opening 10a of the fuel supply pipe 10 can be polished without variation.

  Moreover, since there is no link mechanism like patent document 1, the number of parts of the whole grinding | polishing apparatus 1 reduces, and it can be set as the cheap grinding | polishing apparatus 1. FIG.

  Further, since a pair of the polishing rods 4 are provided with the rotating shaft 2a interposed therebetween, the periphery of the opening 10a of the fuel supply pipe 10 can be simultaneously polished at two locations, and the periphery of the opening 10a can be efficiently polished. be able to.

  Furthermore, since the vertical movement device 3 can change the contact position of the polishing rod 4 with respect to the periphery of the opening 10a of the fuel supply pipe 10 in the cylinder center line direction, the entire periphery of the opening 10a can be reliably polished. .

  In addition, since the diamond-like carbon treatment is performed on the surface of the polishing rod 4, the wear on the surface of the polishing rod 4 is reduced and the replacement cycle of the polishing rod 4 can be extended.

  Then, the diamond-like carbon treatment is applied over the entire surface of the polishing rod 4 from one end to the other, and the polishing rod 4 is polished even if the position of the polishing rod 4 contacting the periphery of the opening 10a of the fuel supply pipe 10 changes. Since the surface treatment portion of the rod 4 is surely in contact with the periphery of the opening 10a, when the periphery of the opening 10a of different types of fuel supply pipes 10 is polished, the diameter of the opening 10a is different and the periphery of the opening 10a Even when the position of the polishing rod 4 in contact with the surface changes, the periphery of the opening 10a can be reliably polished.

  In the embodiment of the present invention, two polishing rods 4 are supported at the protruding end of the rotating shaft 2a at equal intervals around the rotating shaft 2a, but only one shaft may be supported. Two or more rotation shafts 2a may be supported at equal intervals.

  In the embodiment of the present invention, the surface of the polishing rod 4 is subjected to diamond-like carbon treatment, but may be subjected to titanium carbon treatment.

  Further, in the embodiment of the present invention, when the tapered surface 10b is polished, the upward movement of the rotating device 2 by the vertical movement device 3 is stopped by the control of the control device 5, and the polishing is performed. Polishing may be performed while slowly moving up.

  Further, the periphery of the opening 10a of the fuel supply pipe 10 may be polished with the polishing rod 4 while changing the rotation speed of the rotating shaft 2a.

  In the embodiment of the present invention, the periphery of the opening 10a is polished while the rotating device 2 is moved up. However, the periphery of the opening 10a may be polished while moving up and down.

  Further, in the embodiment of the present invention, the polishing apparatus 1 is used to polish the periphery of the opening 10a of the fuel supply pipe 10, but the polishing apparatus 1 may be an object to be polished having other circular openings. Can be polished.

  The present invention is suitable for a polishing apparatus that polishes the periphery of the opening of a workpiece.

1 Polishing device 2 Rotating device (Rotating means)
2a Rotating shaft 3 Vertical movement device (vertical movement means)
4 Polishing rod 4a Support shaft 10 Fuel supply pipe (object to be polished)
10a opening 10b taper surface

Claims (5)

A polishing apparatus that has a circular opening and polishes the periphery of the opening of a workpiece formed on a tapered surface whose diameter increases toward the outside.
Rotating means having a rotating shaft projecting and rotating the rotating shaft in a state of being inserted into the opening of the object to be polished;
One end is pivotally supported by a projecting end of the rotating shaft by a support shaft extending in a direction intersecting the rotating shaft, and rotates together with the rotating shaft by the operation of the rotating means, and is separated from the rotating shaft by the action of centrifugal force. A polishing apparatus comprising: a polishing rod that is biased in a separating direction and presses against the periphery of the opening to polish the periphery of the opening. The polishing apparatus according to claim 1, wherein
A polishing apparatus, wherein a plurality of the polishing rods are axially supported by the protruding end of the rotating shaft at equal intervals around the rotating shaft. The polishing apparatus according to claim 1 or 2,
A polishing apparatus further comprising vertical movement means for moving the rotation means up and down. In the polisher according to any one of claims 1 to 3,
A polishing apparatus wherein the surface of the polishing rod is subjected to diamond-like carbon treatment or titanium carbon treatment. The polishing apparatus according to claim 4, wherein
A polishing apparatus characterized in that a diamond-like carbon treatment or a titanium carbon treatment is applied over the entire surface of one end to the other end of the polishing rod.

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