JP2006051569A - Barrel polishing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a barrel polishing device capable of polishing also the rear surface of a vehicle wheel well. <P>SOLUTION: The barrel polishing device is equipped with a polish accommodating tank 20 to accommodate a polishing medium, a base table, and a work supporting shaft 60 mounted on the base table and admitting removable mounting of a work at the forefront and is arranged so that the polish can flow in the circumferential direction centering on the axis of the tank, wherein the work supporting shaft is installed in such an arrangement that the front face of the vehicle wheel W confronts against the flow of the polish and is arranged so that the work is positioned along the radial direction of the tank, and the distance between the shaft and the center of the tank is made smaller than the radius of the work. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a barrel polishing apparatus, and is used, for example, when barreling a vehicle wheel.

Conventionally, when barrel-polishing a vehicle wheel, the front surface of the vehicle wheel is opposed to the flow of the polishing medium in a forward inclined state, and the vehicle wheel is rotated (around the axis). However, it has been usual to polish the front surface of the vehicle wheel by flowing it along the front surface of the vehicle wheel.
And the grinding | polishing medium which grind | polished the front surface went back from the circumference | surroundings of the wheel for vehicles.

JP 2003-136394 A

  However, in such a conventional barrel polishing method, the polishing medium that has entered the rear side of the vehicle wheel has flowed backward while rotating by the rotational force of the vehicle wheel. Had the disadvantage of being difficult to polish.

  An object of the present invention is to eliminate such inconvenience.

  In order to achieve the above object, in the barrel polishing apparatus according to the present invention, a polishing medium storage tank for storing a polishing medium, a base, and a work support shaft installed on the base and having a work detachable at the tip thereof And a barrel polishing apparatus in which the work support shaft is disposed so that the front surface of the work faces the flow of the polishing medium. The work support shaft is disposed so that the work is positioned along the radial direction of the polishing medium storage tank, and the distance between the work support shaft and the center of the polishing medium storage tank is set to be larger than the radius of the work. It is small.

  The workpiece support shaft may be rotatable about the axis.

  The work support shaft may be movable along a radial direction of the polishing medium collection tank along a surface including the work support shaft.

  The workpiece support shaft may be arranged perpendicular to the axis of the polishing medium collection tank.

  Moreover, the said work support shaft can also be arrange | positioned diagonally with respect to the axial center of the said grinding | polishing medium collection tank.

    Further, a baffle plate member can be installed on the back surface of the work in the vicinity of the side wall surface or bottom wall surface of the polishing medium collecting tank while rotating the work support shaft about the axis.

    In this case, a window can be provided on the workpiece.

    In this case, the baffle plate member can be moved back and forth with respect to the back surface of the workpiece.

    In this case, the baffle plate member can be formed of an elastic material.

    In this case, the baffle plate member can be formed in a tongue shape.

    Further, in this case, the outer shape of the baffle plate member can be substantially matched with the shape of the back surface of the workpiece.

  A barrel polishing apparatus according to the present invention includes a polishing medium storage tank that stores a polishing medium, a base, and a work support shaft that is installed on the base and allows a work to be attached to and detached from the tip thereof. In a barrel polishing apparatus in which the work support shaft is arranged so that the front surface of the work faces the flow of the polishing medium, the work support shaft is made to flow in a circumferential direction around the axis of the polishing medium storage tank. Is disposed along the radial direction of the polishing medium storage tank, and the distance between the work support shaft and the center of the polishing medium collection tank is smaller than the radius of the work, the polishing medium in the work In the part that protrudes from the center of the collection tank, the flow of the polishing medium hits from the back side of the workpiece, so that it is difficult for the polishing medium from the front to enter the back side of the workpiece. That result, stagnation of the polishing medium to the back side of the workpiece, the surface pressure against the backside of the workpiece is polished higher this stagnation.

  Therefore, if this barrel polishing apparatus is used, both the front surface and the back surface of the workpiece can be simultaneously polished, so that the barrel polishing efficiency of the workpiece can be easily improved.

  If the workpiece support shaft is rotatable about the axis, the back side of the workpiece can be polished over the entire circumference.

  Further, if the workpiece support shaft is movable along the radial direction of the polishing medium collecting tank along the surface including the workpiece support shaft, the workpiece support shaft and the polishing are made according to the radius of the workpiece. Since the distance from the center of the medium collection tank can be made smaller than the radius of the workpiece, the range of use is expanded.

  Further, if the workpiece support shaft is disposed perpendicular to the axis of the polishing medium storage tank, the front surface of the workpiece is substantially perpendicular to the flow of the polishing medium. As a result, the polishing medium on the back side of the workpiece becomes larger and the surface pressure of the polishing medium becomes higher, so that the polishing efficiency on the back side of the workpiece is improved.

  Further, if the work support shaft is disposed obliquely with respect to the axis of the polishing medium storage tank, the work is inclined downwardly with respect to the flow of the polishing medium, so that the stagnation occurs above the back side of the work. At the same time, since the stagnation polishing medium flows along the back side, the polishing efficiency on the back side of the workpiece is further improved.

    Further, if a baffle plate member is installed near the side wall surface or bottom wall surface of the polishing medium collecting tank on the back surface of the work while rotating the work support shaft around the axis, the work support shaft is stored behind the work. As a result, the flow of the polishing medium is obstructed by the baffle plate, so that the surface pressure of the polishing medium against the back surface of the work increases, and the back surface as well as the front surface of the work can be polished simultaneously. It is easy to improve. Moreover, since the whole workpiece | work is grind | polished simultaneously, as a result of activating the surface of a workpiece | work, while the adhesion of the coating in a post process improves, the strength of a workpiece | work improves as a result of the surface hardening of a workpiece | work being caused by a grinding | polishing medium.

    In this case, if the workpiece is provided with a window portion, the corners on the back surface of the inner periphery of the window portion can be simultaneously polished into a round shape, so that the coating thickness in the subsequent process can be made uniform, and as a result. In addition, it is possible to prevent the occurrence of rust and to improve the strength by preventing the concentration of stress.

    Further, in this case, if the baffle plate member can be moved back and forth with respect to the back surface of the workpiece, the distance between the back surface of the workpiece and the baffle plate member can be adjusted. Can be adjusted, and its application range is expanded.

    Further, in this case, if the baffle plate member is formed of an elastic material, the baffle plate member swings, so even if the flow pressure of the polishing medium that rotates and flows with the work (on the rear side of the work) changes, The durability of the baffle plate member can be maintained.

    Further, in this case, if the baffle plate member is formed in a tongue shape, the swinging can be further simplified, so that the durability of the baffle plate member can be maintained for a longer period.

    Further, in this case, if the outer shape of the baffle plate member is substantially matched with the shape of the back surface of the workpiece, the surface pressure of the polishing medium can be maintained substantially constant with respect to the back surface of the workpiece. Can be polished smoothly.

  The main feature of the present invention is that the back side of the workpiece can be efficiently barrel-polished while flowing the polishing medium. It is easy to apply to barrel polishing of vehicle wheels.

In the description of this embodiment, a “vehicle wheel” will be taken as an example of a work and will be described below.
1 is a sectional view of a barrel polishing apparatus according to the present invention, FIG. 2 is a sectional view taken along arrow II in FIG. 1, FIG. 3 is a sectional view taken along arrow III in FIG. FIG. 6 is an enlarged sectional view of the VI part in FIG. 5, FIG. 7 is a sectional view of the third embodiment, FIG. 8 is a view taken along arrow VIII in FIG. FIG. 9 is a diagram of a fourth embodiment corresponding to FIG. 8.

  1 and 2, B is a barrel polishing apparatus, and 10 is its base. Reference numeral 20 denotes a polishing medium storage tank, which is installed on the base 10. The polishing medium storage tank 20 has a cylindrical shape and can be rotated in the circumferential direction around the axis O by an appropriate rotating means (see the arrow). .. Are polishing media, which are stored in the polishing medium storage tank 20 and flow in the same direction as the polishing medium storage tank 20 rotates in the circumferential direction. As the polishing media 21, 21,..., All commonly used materials such as ceramic grains can be used. The polishing method may be either wet polishing or dry polishing.

  Reference numeral 22 denotes an upper end opening of the polishing medium storage tank 20, and an aluminum vehicle wheel (corresponding to “work” of the present invention) W described later is immersed in the polishing medium 21, 21,. The

  Next, reference numeral 11 denotes a support frame, which is erected on the base 10. The support frame 11 extends to substantially the upper end of the polishing medium storage tank 20.

  Reference numeral 30 denotes a reversing plate, which is installed on the support frame 11 via a rotating shaft 31. The reversing plate 30 can be reciprocally reversed within a range of about 180 ° based on the rotation of the rotating shaft 31. The rotating shaft 31 is rotationally driven by appropriate rotational driving means such as a motor.

  Reference numeral 41 denotes a support plate, which is installed at an end edge portion of the reversing plate 30. The support plate 41 extends upward. Reference numeral 40 denotes a support bed, which is fixed to the tip of the support plate 41. The support bed 40 is arranged in a vertical state.

  Next, 51 is a first drive motor, which is installed on the support bed 40. The rotational force of the first drive motor 51 is transmitted via the driving sprocket 52. Reference numeral 60 denotes a workpiece support shaft, which is rotatably installed on the support bed 40 via bearings 61 and 61. The work support shaft 60 protrudes toward the polishing medium storage tank 20 (see FIG. 1). 62 is a driven sprocket, which is installed at the rear end of the work support shaft 60. A chain 53 is wound around the driven sprocket 62 and the driving sprocket (of the first drive motor 51) 52, and the rotational force of the first drive motor 51 is decelerated and transmitted.

  An aluminum vehicle wheel W is detachably attached to the tip of the workpiece support shaft 60 via an air chuck (not shown) in a substantially vertical state, and the polishing media 21, 21 of the polishing medium storage tank 20 are attached. … Is immersed in the inside. Therefore, based on the rotation of the drive motor 51, the workpiece support shaft 60 can rotate around its axis.

  At this time, the aluminum vehicle wheel W is disposed along the substantially radial direction of the polishing medium storage tank 20, and the front portion is inclined forward toward the flow of the polishing medium 21, 21,. Maintained (see state of FIG. 1). Further, the rotation of the workpiece support shaft 60 can be intermittently performed in forward and reverse rotations.

  Further, the work support shaft 60 can be moved back and forth along the axial direction by this appropriate drive means (advancing / retreating means existing in the prior art) (see arrow A in FIG. 1). It is also possible to adjust the distance between the workpiece support shaft 60 and the center O of the polishing medium collection tank 20 as appropriate by moving the polishing medium collection tank 20 along the radial direction of the polishing medium collection tank 20 (FIG. 3). See arrow C).

  The vehicle wheel W is formed by integrally forming a rim portion 72 around the disc portion 71, and the disc portion 72 has windows 73, 73,.

  Next, as shown in FIG. 3, the position of the work support shaft 60 is such that the distance R between the work support shaft 60 and the center O of the polishing medium storage tank 20 is greater than the radius r of the vehicle wheel W. It is arranged to be smaller. For this reason, an inner protrusion 75 is formed on the inner side of the vehicle wheel W (the central side of the polishing medium collection tank 20) from the center O of the polishing medium collection tank 20 to the opposite side. The inner projecting portion 75 has a stagnation P of the polishing medium on the back side of the vehicle wheel W as a result of the flow of the polishing medium 21 coming from the back side of the work, making it difficult for the polishing medium to enter the back side. P increases the surface pressure against the back side of the vehicle wheel W, and the back side surface can be polished.

  Next, reference numeral 80 denotes an advance / retreat rod, which is installed on the support bed 40 through bearings 81, 81 so as to be able to advance / retreat (along the axis). The advance / retreat rod 80 is disposed in a substantially parallel state below the work support shaft 60. Reference numeral 82 denotes a base, which is fixed between the bearings 81 and 81 in the advance / retreat rod 80. Nut members 83, 83 are fixed to the base portion 82.

  On the other hand, 84 is a second drive motor, which is installed on the support bed 40. The second drive motor 84 has a speed reduction mechanism. Reference numeral 85 denotes a bolt shaft, which is rotatably installed on the support bed 40 through bearings 86 and 86. The bolt shaft 85 is rotated about the shaft center by the second drive motor 84. The nut members 83, 83 are screwed onto the bolt shaft 85. For this reason, when the bolt shaft 85 rotates, the nut members 83, 83, and consequently the advance / retreat rod 80 advance / retreat.

  A baffle plate member 90 is detachably installed at the tip of the advance / retreat rod 80. The baffle plate member 90 is in the vicinity of the lower side on the back side of the vehicle wheel W. The baffle plate member 90 is formed in a tongue shape by an elastic material such as rubber or synthetic resin. Therefore, the durability of the baffle plate member 90 can be maintained even when the flow pressure of the polishing media 21, 21,. Further, if the baffle plate member 90 is formed in a tongue shape, the swinging can be further simplified, so that the durability of the baffle plate member 90 can be maintained for a longer period. Further, since the outer shape of the peripheral edge of the baffle plate member 90 is substantially matched to the shape of the back surface of the vehicle wheel W (see FIG. 1), the back surface of the back surface of the vehicle wheel W is Since the surface pressure of the polishing media 21, 21,... Can be maintained substantially constant, uniform polishing is achieved.

The operation of the barrel polishing apparatus B will be briefly described.
In this barrel polishing apparatus B, an aluminum vehicle wheel W is fixed to the tip of the work support shaft 60 and is submerged in the polishing media 21, 21,. Then, a stagnation P of the polishing medium 21 is formed on the back side of the inner projecting portion 75 of the vehicle wheel W, and the surface pressure against the back side of the vehicle wheel W due to the stagnation P is increased, and the surface on the back side is polished. To do. Since the vehicle wheel W rotates about the workpiece support shaft 60, the vehicle wheel W can be polished over the front side of the back side of the vehicle wheel W.

  Further, in this barrel polishing apparatus B, mainly, the polishing media 21, 21,... That have passed through the window portions 73, 73, etc. of the vehicle wheel W are stored on the back side of the vehicle wheel W. Then, it flows backward while rotating and flowing in accordance with the rotation of the vehicle wheel W (see the arrow direction in FIG. 4). At this time, as shown in FIGS. 3 and 4, when the advance / retreat rod 80 is brought close to the vicinity of the back surface of the disk portion 71, the flow of the polishing media 21, 21,. It is pressed against the portion 71 and this portion is polished. In particular, the corners on the back of the spokes that make up this window part 73 can be simultaneously rounded, so that the thickness of the coating in the subsequent process can be made uniform, resulting in the prevention of rust and stress. Concentration can be prevented and strength can be improved. Further, since the baffle plate member 90 can be moved back and forth with respect to the back surface of the vehicle wheel W, the surface pressure of the polishing media 21, 21,... Against the back surface of the vehicle wheel W can be adjusted.

  Next, FIGS. 5 and 6 illustrate the second embodiment, in which the work support shaft 60 is disposed horizontally. In this case, the first drive motor 51 rotates the transmission shaft 601, and rotates the workpiece support shaft 60 via a gear box 602 that accommodates vertical transmission means such as a bevel gear. In this case, 603 is a support pipe and is interposed between the bearing 61 and the gear box 602 in a fixed state. The support pipe 603 supports the transmission shaft 601 in a rotatable manner.

  The second drive motor 84 rotates the transmission shaft 801 to move the advance / retreat rod 80 forward and backward through rotation / horizontal movement changing means such as a rack and pinion. The rotation / horizontal movement changing means such as the rack and pinion is housed integrally in the gear box 602.

  Reference numeral 803 denotes a support pipe, which is interposed between the bearing 86 and the gear box 602 in a fixed state. The support pipe 803 supports the transmission shaft 801 in a rotatable manner.

  FIG. 6 is an enlarged sectional view of the gear box 602. 605 and 605 are bevel gears, 805 is a pinion gear, and 806 is a rack gear.

  Next, FIG. 7 and FIG. 8 illustrate the third embodiment, in which the work support shaft 60 is arranged vertically. In this case, the polishing medium flows from the lower side to the upper side through the periphery of the vehicle wheel W and the window 73, so that the above-described effects of the present invention can be achieved.

  In this case, as shown in FIG. 8, if the baffle plate member 90 is installed in the vicinity of the inner wall surface of the polishing medium collecting tank 20, the surface pressure of the polishing medium 21 is increased by the interaction with the inner wall surface. Thus, the polishing effect on the back surface of the vehicle wheel W is improved.

  9, if the auxiliary baffle plate members 901 and 901 are installed on both sides of the baffle plate member 90, the surface of the polishing medium 21 is further increased by the interaction with the inner wall surface of the polishing medium storage tank 20. The pressure increases, and the polishing effect on the back surface of the vehicle wheel W is further improved. The auxiliary baffle plate members 901 and 901 are integrally fixed to the advance / retreat rod 80.

  In addition, as a polishing medium in the polishing apparatus B, if a soft material, for example, a granule or lump such as sponge, rubber, or soft plastic is used, finish polishing can be efficiently performed. In addition, it is good also as this kind of grinding | polishing medium by coating a soft material on the surface of a hard grain or a hard lump.

  After this barrel polishing, surface treatment such as painting, plating, anodizing is performed. These surface treatments include everything that is normally present.

In this embodiment, the vehicle wheel is used as the workpiece. However, the present invention is not limited to this and naturally includes all objects to be polished.
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  It can be used when barrel-polishing disc-shaped workpieces, particularly vehicle wheels.

FIG. 1 is a sectional view of a barrel polishing apparatus according to the present invention. FIG. 2 is a view taken in the direction of arrow II in FIG. FIG. 3 is a view taken along arrow III in FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a diagram of a second embodiment corresponding to FIG. 6 is an enlarged cross-sectional view of the VI part in FIG. FIG. 7 is a sectional view of the third embodiment. FIG. 8 is a view taken along arrow VIII in FIG. FIG. 9 is a diagram of a fourth embodiment corresponding to FIG.

Explanation of symbols

B ... Barrel polishing device P ... Grudge W ... Vehicle wheel (workpiece)
R: Distance between workpiece support shaft and center of polishing medium storage tank O: Center of polishing medium storage tank r: Radius of vehicle wheel (work)
10… Base
11… Support frame
20… Abrasive media storage tank
21… Abrasive media
22… Upper end opening of polishing medium storage tank 20
30… Reversing plate
31… Rotary axis
40… Support bed
41… Support plate
51… First drive motor
52… prime mover sprocket
53… Chain
60… Work support shaft
61… Bearing
601… Transmission shaft
602… Gearbox
603… Support pipe
605… Bevel Gear
62… Followed sprocket
71… Disc part
72… Disk part
73… Window
75… Inside protrusion
80… Advancing and retracting rod
803… Support pipe
801… Transmission shaft
805… Pinion gear
806… rack gear
81… Bearing
82… Base
83… Nut member
84… Second drive motor
85… Bolt shaft
86… Bearing
90… baffle plate
901… Auxiliary baffle plate member

Claims (11)

A polishing medium storage tank for storing the polishing medium, a base, and a work support shaft installed on the base and having a work detachable at the tip thereof, the polishing medium being centered on the axis of the polishing medium storage tank In the barrel polishing apparatus in which the work support shaft is arranged so that the front surface of the work faces the flow of the polishing medium, the work is supported by the work support shaft in the radial direction of the polishing medium storage tank. A barrel polishing apparatus characterized in that the distance between the work support shaft and the center of the polishing medium collecting tank is smaller than the radius of the work. 2. The barrel polishing apparatus according to claim 1, wherein the workpiece support shaft is rotatable about an axis. 2. The barrel polishing apparatus according to claim 1, wherein the work support shaft is movable along a radial direction of the polishing medium collecting tank along a surface including the work support shaft. 2. The barrel polishing apparatus according to claim 1, wherein the workpiece support shaft is disposed perpendicular to an axis of the polishing medium storage tank. 3. 2. The barrel polishing apparatus according to claim 1, wherein the workpiece support shaft is disposed obliquely with respect to the axis of the polishing medium collection tank. 3. The barrel polishing apparatus according to claim 2, wherein a baffle plate member is installed in the vicinity of the side wall or bottom wall of the polishing medium storage tank on the back surface of the workpiece. 7. The barrel polishing apparatus according to claim 6, wherein the workpiece has a window portion. 7. The barrel polishing apparatus according to claim 6, wherein the baffle plate member can be moved back and forth with respect to the back surface of the workpiece. 7. The barrel polishing apparatus according to claim 6, wherein the baffle plate member is made of an elastic material. 7. The barrel polishing apparatus according to claim 6, wherein the baffle plate member is formed in a tongue shape. 7. The barrel polishing apparatus according to claim 6, wherein an outer shape of the baffle plate member is substantially matched with a shape of a back surface of the workpiece.

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