KR920003212B1 - Method and device for grinding cylindrical surface of cylindrical or column-shaped work - Google Patents

Abstract

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Description

Method and apparatus for polishing outer circumference of ordinary or columnar objects

1 is a cross-sectional view showing an embodiment of the device of the present invention.

2 is a schematic cross-sectional view of a polishing apparatus for explaining a polishing state of the method of the present invention.

3 is a cross-sectional view showing an example of a polished object polished by the method of the present invention.

4 is a schematic cross-sectional view of a polishing apparatus for explaining a polishing state of a comparison method.

5 is a cross-sectional view showing an example of a polished workpiece polished by a comparative method.

6 is a cross-sectional view showing an example of a method of attaching a culture machine.

7 is a schematic plan view.

* Explanation of symbols for main parts of the drawings

1: expectation 2, 3: support

4: main shaft 5, 7, 11, 15, 18, 25: bearing

6: longitudinal axis 8: polishing tank

8a: Both sides 8b: Outer wall

9, 23: mounting hole 10: bearing box

12, 21: support 13: fixing frame

14: fixed shaft 16: fixed gear

17: main shaft axis 19: planetary gear

20, 27: Jig body 22: connecting shaft

24: sieve 26: seed axis (전 自轉軸)

28: main shaft rotation motor 29, 30, 33, 34: pulley

31, 35: belt 32: motor for rotating the polishing tank

36: polished object 37: media

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for polishing an outer circumferential surface of a conventional or columnar product, and more particularly, to a method and an apparatus for automatic polishing of the outer circumferential surface of a conventional or columnar product employing a dry flow polishing method.

Conventionally, various methods have been proposed for the automatic polishing of the outer circumferential surface of a cylindrical or cylindrical object, but the method mainly adopts a buffer polishing method or a belt polishing method. In most cases, the surface is gradually polished from one end to the other.

However, the method of grinding the outer circumferential surface of ordinary products or columnar products employing the buff polishing method or the belt polishing method is to use a buff or a belt as a tool for the ordinary circumferential surface with the pattern of the outer circumferential surface, or the large or small flaw. In this case, there are drawbacks such that only the block portion is softly erased and the deep concave portion cannot be polished.

Conventionally, a method of grinding a conventional or columnar product into a fluid medium and polishing the outer peripheral surface thereof is known as a method of polishing a conventional or columnar product. However, this method is effective when the ordinary object or columnar object is small but relatively long and large. It is difficult to employ | adopt for a grinding | polishing object.

In this case, the polishing object is supported on the spindle, and first, the surface is polished by inserting almost half of the polishing object into the flow medium, and then removing the polishing object from the spindle, and then attaching it to the spindle again with the polishing object reversed. The surface polishing may be adopted by inserting into the fluid medium, but this method is cumbersome in that the polishing surface of the first half and the other half is non-uniform in addition to the cumbersome operation.

On the other hand, a method of grinding a workpiece by fixing a workpiece (glasses) with a jig (dry barrel) has been proposed (Japanese Patent Laid-Open No. 57-194873). There is a drawback that is not.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for polishing a conventional or columnar product which can efficiently and uniformly polish the entire outer surface of a relatively large ordinary or columnar product.

That is, in order to achieve the above object, the present invention generally arranges a to-be-polished object along a horizontal direction in a horizontal cylindrical polishing tank in which both end surfaces are occluded, and revolves the polishing object about the central axis of the polishing tank. At the same time, the dry medium introduced into the polishing tank is agitated and flows into the polishing object to be rotated and rotated, and the rotation and rotation are carried out on the outer circumferential surface of the polishing vessel that gradually changes its relative position with respect to the central axis of the polishing vessel. The outer peripheral surface of the abrasive is polished by contacting the flowing dry medium.

According to the method of the present invention, since the dry medium is stir-flowed to the to-be-polished material to be rotated and rotated, the medium is agitated effectively. However, since the relative position of the polishing object gradually changes with respect to the center axis of the polishing tank, the outer peripheral surface of the polishing object is uniformly polished because it is uniformly contacted over the entire outer peripheral surface without deflection in the contact state of the flow medium with the outer peripheral surface of the polishing object. do. In addition, since the fluid medium contacts the entire surface of the outer circumferential surface of the object to be polished, the entire surface is polished simultaneously, and even if the object is magnified, it can be automatically and uniformly polished efficiently and uniformly in a short time.

In this case, by rotating the polishing bath separately from the revolution and rotation of the polishing object, the stirring flow of the medium is more effectively assisted, and the object of the present invention is more effectively achieved. Here, in order to effectively stir the flow of such a medium, and to uniformly grind the outer circumferential surface of the polishing object, it is recommended to set the rotating speed of the polished material to 5 to 150 rpm and the rotating speed of 10 to 450 rpm and the rotational speed of the polishing tank to 10 to 50 rpm.

Moreover, as an apparatus for implementing such a method of this invention, it arrange | positions along the horizontal direction with the horizontal cylindrical grinding | polishing tank in which both end surfaces were occluded, and one end side penetrates the center part of one side plate of this grinding | polishing tank, and protrudes in this grinding tank and the other end. A main rotary shaft which is connected to the main rotary shaft rotational drive source and is rotated by the drive source, and is disposed along the horizontal direction, and one end side passes through the central portion of the other side plate of the polishing tank and protrudes into the polishing tank and the main rotary shaft A connecting shaft and one support, each of which is fixed to a longitudinal rotation shaft opposite to the protruding one end of the protruding end and the protruding one end of the two rotating shafts, and which supports a plurality of rotating shafts rotatably attached along the circumferential direction, and the support. Meshed with planetary gears fixed to a rotating shaft attached to the fixed shaft, and fixed to the fixed shaft, and fixed to the rotating shaft, The abrasive is polished by rotating the other support and the longitudinal axis of the support having a jig body that horizontally supports the ordinary or columnar workpiece to be horizontally connected with one support and a connecting shaft integrally with the rotation of the main rotating shaft. And a device configured to rotate the abrasive by engaging and revolving around the center axis of the jaw and simultaneously rotating the planetary gear fixed to the rotating shaft attached thereto by rotation of the support, while revolving around the fixed gear. By this apparatus, the method of the present invention can be suitably carried out.

In this case, in order to rotate the polishing tank, a bearing box is rotatably attached to each of the two rotating shafts through the bearings, and at the same time, the polishing box is fixed to these bearing boxes, and the bearing box and one of the bearing boxes are integrally attached to one of the bearing boxes. It is an effective means to connect the drive source for polishing retrieval which rotates the polishing tank.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of the apparatus of the present invention, in which 1 is a base, and on this base 1, two bases and supports 2 and 3 are fixed to each other at predetermined intervals. One support 2 is supported by two cylindrical main rotational shafts 4 arranged in the horizontal direction so as to be rotatably supported by two fixed to the support 2 and bearings 5 and 5. (3) is rotatably supported by the two bearings 7, 7 in a state in which the circumferential longitudinal rotation shaft 6 is arranged along the horizontal direction opposite to the main rotation shaft 4.

8 is an octagonal horizontal barrel abrading tool with two end faces occluded, and bearing box attaching holes 9 and 9 formed in the center of both side plates 8a and 8a of the polishing bath 8 are bearing boxes 10 respectively. , 10 are inserted and fixed, and these bearing boxes 10 and 10

The bearings 11 and 11 accommodated therein are rotatably attached to both sides 4 and 6 of the main shaft 4 and the longitudinal side of the longitudinal shaft 6, respectively. By the rotation of 10), the polishing bath can be rotated integrally with this. Although not shown, part of the outer circumferential wall 8b of the polishing tank is formed to be detachable, and the part to be polished can be removed from the polishing tank 8 by removing a part of the outer circumferential wall 8b.

On the leading end projecting in the polishing tank 8 of the main rotating shaft 4, a hollow disk-like abrasive support 12 is fixed, and the main end of the main rotating shaft 4 is attached to the support 2 on one side thereof. The fixed shaft 14 is fixed to the fixed frame 13 and the tip end part protrudes in the said to-be-polished support 12 is arrange | positioned. Here, bearings 15 and 15 are disposed between the main rotational shaft 4 and the fixed shaft 14, whereby the main rotational shaft 4 can rotate about the fixed shaft 14.

A ring-shaped fixing gear 16 is fixed to the tip portion of the fixed shaft 14 protruding into the support 12. In the support 12, a plurality of main shafts 17, 17 (two in the figure) are arranged to be spaced apart from each other along the circumferential direction, and are rotatable by the bearings 18, 18. Ring-shaped planetary gears 19 and 19 are fixed to the rotating shafts 17 and 17, respectively, and these planetary gears 19 and 19 are engaged with the fixed gears 16, respectively. In addition, the front end portions of the rotation shafts 17 and 17 penetrate the side walls of the support 12 and protrude to the outside, and the jig bodies 20 and 20 are fixed to the front ends thereof.

In addition, a disc shaped abrasive support 21 is fixed to the tip portion protruding in the polishing tank 8 of the longitudinal rotation shaft 6, and the center of the support 21 is mutually different from the center of the one support 12. It is connected by the connecting shaft 22, and when one support body 12 rotates, the other support body 21 may rotate integrally with this.

The other support body 21 is provided with a plurality of attachment holes 23 and 23 arranged in the circumferential direction with a predetermined distance therebetween, and these attachment holes 23 and 23. ), The cylindrical seed shaft shafts 24 and 24 with bottoms are inserted and fixed. Thus, seed shafts 26 and 26 rotatably supported by bearings 25 and 25 are disposed in these trunk bodies 24 and 24, and the front ends of these seed shafts 26 and 26 are disposed. The jig bodies 27 and 27 are fixed, respectively, in the state which protruded from the sieve 24 and 24 to the outside. In addition, these jig bodies 27 and 27 are disposed so as to face the one side of the jig bodies 20 and 20, respectively, so that the attachment holes 23 and 23 for inserting and fixing the hollow bodies 24 and 24 are provided. The snow location is selected by the enemy.

The main rotating shaft rotating motor 28 is fixed to the base 1, and the pulley 29 fixed to the rotating shaft body of the motor 28 and the pulley 30 fixed to the proximal side of the rotating shaft 4 are provided. The belt 31 is arranged between the belt 31, the main shaft 4 is rotated by the driving of the motor 28, and the motor 32 for rotating the polishing vessel is fixed on the base 1, and the motor ( The belt 35 is provided between the pulley 33 fixed to the rotating shaft body of the 32 and the pulley 34 fixed to the bearing box 10 rotatably attached to the longitudinal axis 6. 32, one bearing box 10 is rotated by the drive of 32, and the grinding | polishing tank 8 is rotated integrally with this.

Next, a method of polishing the outer circumferential surface of a normal or columnar to-be-polished object such as a cylindrical body or a cylindrical body using the above apparatus will be described. First, a part of the outer circumferential wall 8b of the polishing tank 8 is removed, 36 and 36 are placed in the polishing tank 8, and the abrasives 36 and 36 are attached to the jig bodies 20, 20, 27 and 27, respectively, and fixed, and the medium 37 in the polishing tank 8 is fixed. About 1/3 to 1/2 of the capacity of the polishing tank 8 is introduced, and the outer peripheral wall of the polishing tank 8 is attached again.

Organic mediators, especially wood mediators, are preferred as mediators. For example, the surface of mediators such as granules, powders, and flakes such as wood chips, lumberjacks, corn, fruit of trees, bamboo, etc. I) coated with i) is effectively used.

After this preparation, both motors 28 and 32 are driven to perform polishing. That is, the main rotary shaft 4 is rotated by driving the main rotary shaft rotating motor 28, and one support 12, the connecting shaft 22, the other support 21, the longitudinal rotation shaft 6 integrally with this. Are rotated, and the jig bodies 20, 20, 27, 27 are attached to the rotation shafts 17, 17, 26, 26 attached to both of the support bodies 12, 21, respectively. The to-be-polished objects 36 and 36 which rotate through () rotate (revolve around the connecting shaft 22 (the center axis of the polishing bath 8)). In addition, the planetary gears 19 and 19, which are fixed to these main shafts 17 and 17 and are engaged with the fixed gear 16, are rotated (or idle) by the main shafts 17 and 17. As the fixed gears 16 engage and revolve around the fixed gears 16, the planetary gears 19 and 19 rotate, and the main shafts 17 and 17 rotate together. The to-be-polished object 36 and 36 rotates. Moreover, the grinding | polishing tank 8 rotates through the bearing box 10 rotatably attached to the longitudinal rotation shaft 6 by driving the grinding | polishing tank rotation motor 32. As shown in FIG.

Therefore, the media 37 injected into the polishing tank 8 by the revolution and rotation of the polishing objects 36 and 36 and the rotation of the polishing tank 8 effectively stir and flow to the outer circumferential surfaces of the polishing objects 36 and 36. The outer circumferential surfaces of the abrasives 36 and 36 are well polished because they are contacted with effective pressure. Further, in this case, the abrasives 36 and 36 rotate and rotate as described above, so that the relative position of the abrasives 36 and 36 with respect to the connecting shaft 22 (the central axis of the polishing pad 8) changes over time. Therefore, there is no deflection in the contact state of the fluid medium 37, so that the outer circumferential surfaces of the polished objects 36 and 36 are equally polished in any part, and there is no closed end in which polishing unevenness occurs.

In addition, since the medium 37 contacts the front surface of the outer circumferential surfaces of the polished objects 36 and 36 more uniformly at the same time, the polishing time is shortened and efficient polishing is performed, and even if the polished objects 36 and 36 are grand, The polishing can be performed efficiently and evenly.

That is, as shown in FIG. 2, the point A of the to-be-polished object 36 is the central axis of the polishing tank 8 according to the revolution (the R direction in drawing) and the rotation (the r direction in the drawing) of the to-be-polished object 36 C) or its relative position with respect to the inner circumferential wall of the polishing tank 8 gradually changes, and thus, the outer circumferential surface of the polished object 36 changes with respect to the inner circumferential wall of the polishing tank 8 at any time, so that the object to be polished 36 Deflection on the side where the medium 37 touches the outer circumferential surface of (), and (the medium 37 flows in the M direction when the polishing tank 8 rotates in the T direction). Since the contact of the medium 37 is even with respect to, as shown in FIG. 3, the outer circumferential surface of the polishing object 36 is evenly polished (P). On the other hand, as shown in FIG. 4, in the case where the polished object 36 is not rotated, even if it is revolved, the point A of the polished object 36 is the central axis C of the polishing tank 8 or the polishing tank 8. Since there is no change in position with respect to the inner circumferential surface of), the medium 37 touches the polishing tank facing surface side (outside) of the polished object 36 much while the touching of the medium 37 facing the center axis facing surface (inside) is less. As shown in the figure, the outside of the to-be-polished object 36 is polished a lot, and the inside has a defect which is hardly polished.

It is preferable that the revolving water of the to-be-polished material 36 and 36 shall be 5-150 rpm, especially 10-80 rpm, and the rotating water shall be 10-450 rpm, especially 20-250 rpm, and the rotation speed of the grinding tank 8 is 10-75 It is suitable to set it as 50 rpm especially 15-35 rpm, by which the medium flows more effectively, and the objective of this invention that the external peripheral surfaces of the to-be-polished objects 36 and 36 are more and more uniformly and uniformly more efficiently in a short time is more certain. Is achieved.

After polishing as described above, the driving of both motors 28 and 32 is stopped to remove a part of the outer circumferential wall 8b of the polishing tank 8, and the polished objects 36 and 36 are jig body 20. 20, 27, and 27 are removed from the polishing bath 8.

In addition, the apparatus of the embodiment described above allows the polishing tank 8 to rotate, but in this case, the polishing tank 8 may be rotated in only one direction, and in particular, in the case where the shape of the polished object 36 is complicated, at predetermined time intervals. Reverse rotation is possible.

Moreover, if necessary, it may be made to swing around the connecting shaft 22, and in some cases, polishing may be performed in a stationary state. In addition, the shape of the polishing tank 8, the support 12, the jig bodies 20, 27, and the like can be changed as appropriate. In addition, the apparatus of the present invention supports the normal or columnar spindle in the horizontal direction by the jig bodies 20, 20, 27, and 27 instead of the abrasives 36, 36, and attaches an appropriate abrasive support member to the spindle, Abrasives can be attached to this support member (not limited to ordinary or columnar). For example, there are parts that are complicated in metal ware and cannot be automated in buff polishing.However, the method of the present invention is effective for grinding such as spun necks and clicks of free surface forks of dishes. And as shown in FIG. 7, the flatware 38 is sandwiched by two sandwiching portions 40 and 40 having rubber layers 39 and 39 formed therein, and the sandwiching portions 40 and 40 (spindles) are sandwiched. Supporting by the jig bodies 20 and 27, the culture machine 38 can be polished, and by this, many culture machines can be attached and efficient polishing can be performed. Other configurations can be changed in various ways within the scope of the present invention.

According to the present invention, the outer circumferential surface of a relatively large ordinary product or columnar product can be polished more efficiently and uniformly in a short time, and in particular, in addition to the precision grinding of rolls and pipes, such as cam roller copy rolls, and even gears. It is suitably employed for polishing such as replacement of buff polishing of general metal.

Claims (6)

In the horizontal type ordinary grinding bath 8 in which both end surfaces are occluded, the normal or columnar abrasives 36 are disposed along the horizontal direction, and the abrasives 36 are revolved about the center axis of the polishing tank 8. At the same time, the rotating medium 37 introduced into the polishing tank 8 is stirred and flowed into the polishing object 36 to rotate and rotate, and the rotation and rotation of the polishing tank 8 Grinding the outer circumferential surface of the ordinary or columnar product by grinding the outer circumferential surface of the polished object 36 by contacting the floating dry medium 37 with the outer circumferential surface of the polished object 36 which gradually changes its relative position with respect to the central axis. Way. 2. The method for polishing the outer circumferential surface of a normal or columnar product according to claim 1, wherein a revolution speed of the polished object is 5 to 150 rpm and a rotation speed is 10 to 450 rpm. The ordinary or columnar product according to claim 1 or 2, wherein the polishing tank (8) is rotated separately from the revolution and rotation of the polishing object (36) to assist the stirring flow of the dry medium (37). Polishing of the outer circumference. 4. The method for polishing the outer circumferential surface of a normal or columnar product according to claim 3, wherein the rotation speed of the polishing tank (8) is 10 to 50 rpm. Both end faces are arranged along the horizontal direction with the horizontal type normal polishing tank 8 which is occluded, and one end side penetrates into the center part of one side plate 8a of this polishing tank 8, and protrudes into this polishing tank 8, At the same time, the main rotary shaft rotational drive source 28 is connected to the other end and arranged along the horizontal direction with the main rotary shaft 4 rotated by the drive source 28, and one end side is the side plate of the other side of the polishing tank 8. It protrudes into this polishing tank 8 through the center part of 8a, and is projected to the longitudinal rotation shaft 6 which opposes the projection one end of the said main rotation shaft 4, and the protruding ends of the said two rotation shafts 4 and 6. Support bodies 16 and 21, which are fixed to each other and rotatably attached with a plurality of rotating shafts 17 and 26 along the circumferential direction, and connecting shafts 22 and one support body connecting between these supports 16 and 21, respectively. A fixed gear 16 engaged with the planetary gear 19 fixed to the rotating shaft 17 attached to the 16 and fixed to the fixed shaft 14, and It is fixed to the rotation shafts 17 and 26, and has the jig bodies 20 and 27 which support the to-be-polished object 36 horizontally, One support body integrally with the rotation of the said main shaft 4 (16), by rotating the other support body 21 and the longitudinal rotation shaft 4 connected to this through the connecting shaft 22, the object to be polished 36 is centered on the center axis of the polishing tank (8) The object to be polished (36) by revolving along the circumference thereof while engaging the fixed gear (16) with the planetary gear (19) fixed to the rotating shaft (17) attached thereto by rotation of the support (16). Apparatus for grinding the outer circumferential surface of a conventional or columnar product, characterized in that for rotating. 6. The polishing tank according to claim 5, wherein the bearing boxes (10, 10) are rotatably attached to the two rotating shafts (4, 6) through the bearings (11, 11), respectively. (8) is fixed, and one bearing box 10 is connected with this bearing box 10 and the drive tank 32 for rotation of the polishing tank which rotates the said polishing tank 8 integrally with this bearing box 10, It is characterized by the above-mentioned. Apparatus for polishing the outer circumference of a common or columnar product.

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