JPH04111761A - Polishing device serving for both longitudinal and lateral polishing - Google Patents

Abstract

PURPOSE:To perform both longitudinal and lateral polishings by a single set of device by providing a supporting tool which rotates a rotary unit with a direction orthogonal to a lengthwise direction of a polishing workpiece material serving as the center of rotation. CONSTITUTION:When a polishing workpiece material(steel pipe)P is longitudinally polished, the center of rotation of a polishing wheel 42 is set so as to be orthogonal to a lengthwise direction of the workpiece P. On the other hand, when the workpiece P is laterally polished, the center of rotation of the polishing wheel 42 is set in parallel to the lengthwise direction of the workpiece P. A change of this center of rotation is very easily performed by rotating a rotary unit 34, which supports the polishing wheel 42, in a predetermined direction relating to a supporting unit 37 through operation of a handle 39.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polishing apparatus that can perform both vertical polishing and horizontal polishing of a material to be polished using one device.

[Prior Art] When steel pipes, round bars, etc. are used for applications that take advantage of their metallic surface properties, their surfaces are polished before being shipped. In particular, stainless steel pipes are often used for decorative purposes, etc., which require polishing work.

In this type of polishing, vertical polishing is performed to create polishing marks in the elongated direction on a cylindrical or cylindrical polished material, and horizontal polishing is performed to create polishing marks in the circumferential direction. In the case of vertical polishing, the longitudinal direction of the material to be polished and the center of rotation of the polishing wheel are set parallel to each other, and the polishing is performed along the circumferential direction, as illustrated in, for example, Japanese Patent Laid-Open No. 54-137193. A polishing wheel slides against the outer peripheral surface of the polishing material. In the case of vertical polishing, the center of rotation of the polishing wheel is kept perpendicular to the longitudinal direction of the material to be polished, and the polishing wheel is subjected to sliding friction on the outer peripheral surface of the material to be polished along the longitudinal direction.

[Problems to be Solved by the Invention Ul These vertical polishing and/or horizontal polishing are selected according to the user's requirements. However, in conventional polishing equipment,
Since the center of rotation of the polishing wheel is fixed, a device dedicated to horizontal polishing or vertical polishing is required.

Furthermore, even if there is a polishing device that can switch from vertical polishing to horizontal polishing and from horizontal polishing to vertical polishing with the same device, it requires complicated steps to remove the polishing wheel, set one position, reinstall it, etc. The work will take a long time.

Therefore, the polishing device of the present invention allows the polishing mode to be freely switched between vertical polishing and horizontal polishing by attaching the polishing wheel via a rotating body that can change the center of rotation of the polishing wheel. It was developed for this purpose.

[Means for Solving the Problem] In order to achieve the object, the polishing apparatus of the present invention includes a polishing wheel that rotates in contact with the outer peripheral surface of a cylindrical or columnar material to be polished, and a polishing wheel that rotates in contact with the outer peripheral surface of a cylindrical or columnar material to be polished. The rotating body is equipped with a rotating body that supports the rotating body and is equipped with a polishing wheel drive motor, and a support that rotates the rotating body with a rotation center in a direction perpendicular to the longitudinal direction of the material to be polished. The center of rotation of the polishing wheel is set at right angles or parallel to correspond to vertical polishing or horizontal polishing.

A single or plural polishing wheel may be provided as the polishing wheel that rotates by sliding friction on the outer circumferential surface of the material to be polished. When incorporating multiple polishing wheels, one method is to arrange them in the longitudinal direction of the material to be polished. It doesn't matter which one.

Furthermore, a pair of holding mechanisms that rotatably support the material to be polished may be provided on the upstream and downstream sides of the polishing wheel in the conveyance direction of the material to be polished. At this time, the rotation of the material to be polished is regulated between the holders, so even if the material to be polished is somewhat sharp, unpolished surfaces may occur due to poor frictional contact between the polishing wheel and the material to be polished. , defects such as insufficient polishing do not occur.

[Function] When vertically polishing the material to be polished, the center of rotation of the polishing wheel is set to be perpendicular to the longitudinal direction of the material to be polished. On the other hand,
When horizontally polishing the material to be polished, the center of rotation of the polishing wheel is set parallel to the longitudinal direction of the material to be polished. This rotation center can be changed very easily by rotating the rotating body that supports the polishing wheel in a predetermined direction.

[Example] The present invention will be specifically described below with reference to an example in which the present invention is applied to polishing the outer surface of a steel pipe. In the following explanation, a steel pipe is used as an example of the material to be polished, but it goes without saying that other cylindrical or columnar materials can be polished in the same manner.

The polishing apparatus of this embodiment has a garter 1 as shown in FIG.
0, a pair of support columns 11 are arranged that are movable along a direction (left-right direction in FIG. 1) perpendicular to the conveying direction of the steel pipe P. In addition, in FIG. 1, only the right column 11 is shown, and the left column symmetrically arranged around the steel pipe P is omitted.

The left and right columns 11 are connected to each other by a connecting rod 12. The connecting rod 12 is dynamically connected to the handle 15 via a gear mechanism 13 and a chain 14. When the handle 15 is rotated, the rotation is transmitted to the connecting rod 12 via the chain 14 and gear mechanism 13. Then, by pitch-feeding the connecting rod 12, the left and right columns 11 move away from each other or approach each other. In addition,
In the case of FIG. 1, the handle 15 is rotated manually, but it is of course possible to adopt a method in which the support column 11 is moved by a motor drive.

A lifting mechanism 20 is provided at the top of the support column 11.

The lifting rod 24 of the lifting cylinder 23 is in contact with the lower end of the lifting cart 22 on which the pressurizing motor 31 is mounted.

Inside the elevating mechanism 20, a pressurizing mechanism 30 is suspended from the garter 10 so as to be movable in the horizontal direction. Pressure mechanism 3
A pressurizing rod 33 extending from a pressurizing motor 31 is connected to the frame 32 of No. 0 .

A rotating body 34 on which a polishing mechanism 40 is mounted is attached to the lower part of the pressure mechanism 30 so as to be movable up and down.

The rotary body 34 is provided with a pulley 36 to which power is transmitted from an oscillation motor 35, and the rotary body 34 is oscillated in the vertical direction during polishing work via an eccentric cam or the like.

As shown in FIG. 2, the rotating body 34 is attached to a support 37 via a metal 38. Further, an operating handle 39 is attached to a part of the rotating body 34. Rotating body 3
4 is fixed in place by a suitable locking mechanism (not shown), and when the locking mechanism is released, the support 3
7, it is designed to rotate freely. Note that a polishing wheel drive motor 45 is attached to the back side of the rotating body 34.

An arm 41 extends horizontally from the rotating body 34, and a polishing wheel 42 is rotatably suspended from the tip of the arm 41 via a shaft 43.

The shaft 43 has a pair of bearings 44 as shown in FIG.
is rotatably supported. A pulley 49 is mounted on the shaft 43 between the bearings 44 .

A pulley 47 is attached to an output shaft 46 extending from a rotation motor 45 mounted on the rotating body 34, and a pulley 49
A drive belt 48 is passed between the two.

In addition, in FIG. 1, a pair of polishing wheels 42 are provided so as to sandwich the steel pipe P from both sides. However, the present invention is not limited to this, and the polishing wheel 42 may be arranged on one side of the steel pipe P as shown in FIGS. 2 and 3, or three or more polishing wheels 42 may be arranged on one side of the steel pipe P. They can also be arranged at equal intervals along the circumferential direction on the outer peripheral surface. Alternatively, a plurality of polishing wheels 42 may be arranged in series in the longitudinal direction of the steel pipe P, but in the following explanation, the polishing wheels 42 are arranged in the circumferential direction of the steel pipe P, and the polishing wheels 42 are arranged in the upstream direction of the polishing wheels in the conveyance direction of the steel pipe P. The case where a pair of holding mechanisms are provided on the side and the downstream side is taken as an example.

The steel pipe P to be polished is moved by the polishing wheel 42 .
It is sent between 42 and 42. The feeding mechanism 50 includes an elevating cart 51 that moves up and down depending on the size of the steel pipe P. A traveling motor 52 is mounted on the lifting cart 51, and the output of the motor 52 is transmitted to a feed roll 54 via a belt 53.

As shown in FIG. 4, the feed roll 54 is arranged so that its rotational axis is oblique to the conveying direction of the steel pipe P.

Thereby, when the feed roll 54 rotates, the steel pipe P moves forward while rotating under the rotational force of the feed roll 54. Note that table rolls 55 and 56 for loading and unloading are arranged outside the feed rolls 54 and 54.

On the front and rear sides of the polishing wheel 42 in the conveying direction of the steel pipe P,
A pair of holding mechanisms 60 are provided.

As shown in FIG. 5, the holding mechanism 60 has a hexagonal frame 61 in which long sides and short sides are alternately repeated. A wrapper guide 63 is provided on the long side portion 62 of the frame 61, and a guide roll 65 is provided on the short side portion 64 of the frame 61, respectively. These wrapper guides 63 and guide rolls 65
are connected to the frame 6 by feed screws 66 and 67, respectively.
It moves forward or backward relative to the steel pipe P passing through the center of the pipe.

It is preferable to form a tapered surface 68 on the inside of the trumpet guide 63, as shown in FIG.

An opening with a wide entrance side and a narrow exit side is formed in the center of the frame 61 by the tapered surface 68, making it easy to receive the steel pipe P and allowing the steel pipe P to be delivered to a predetermined grinding position with high accuracy.

Further, a holding mechanism 70 is provided on each of the import side and the export side of the steel pipe P. This presser mechanism 70 has a presser roll 7 attached to a lifting guide 71 suspended from the garter 10.
2 is provided so that it can be moved up and down. The presser roll 72 moves downward and approaches the steel pipe P, or rises and moves away from the steel pipe P, by expanding and contracting the rond of an elevating cylinder 74 mounted on a machine base 73.

The presser roll 72 of the presser mechanism 70 presses the rear end of the steel pipe P during the loading process of the steel pipe P until the tip of the steel pipe P passes through the holding mechanism 60 on the entry side. This prevents large swings of the steel pipe P running on the table roll 55 and the entrance feed roll 54. Moreover, when the outer periphery of the steel pipe P is rotatably supported by the pair of holding mechanisms 60, the pressing rolls 72 move to the retracted position. As a result, the rotation of the steel pipe P in the soil is regulated between the holding mechanisms 60 and 60, and the front end and rear end sides located outside the holding mechanisms 60 and 60 rotate freely. Therefore, even if the steel pipe P to be polished has some bend, the vibration caused by rotation is absorbed by the free rotation of the front end and rear end, and the state of frictional contact between the outer peripheral surface of the steel pipe P and the polishing wheel 42 is maintained. There will be no adverse effects caused by bending.

When vertically polishing the steel pipe P, the polishing wheel 4 for the steel pipe P
The positional relationship between the two is set as shown in FIG. The power from the motor 45 is transmitted to the polishing wheel 4 via a belt 48.
2 and rotate the polishing wheel 42 as shown by the arrow.

As a result, the abrasive on the outer periphery of the polishing wheel 42 slides against the outer peripheral surface of the steel pipe P in the longitudinal direction, and vertical polishing is performed.

When changing from vertical polishing to horizontal polishing, the locking mechanism is released and the rotating body 34 is rotated relative to the support body 37 by operating the handle 39 to set the positional relationship shown in FIG. 3. . In this state, the locking mechanism is operated to maintain the longitudinal direction of the steel pipe P and the rotation center of the polishing wheel 42 parallel to each other.

When the polishing wheel 42 is rotated by the power from the motor 45, the peripheral surface of the polishing wheel 42 slides against the outer peripheral surface of the steel pipe P in the circumferential direction. . As a result, the steel pipe P is laterally polished.

In this way, by rotating the rotating body 34 and changing the center of rotation of the polishing wheel 42 with respect to the longitudinal direction of the steel pipe P, switching between vertical polishing and horizontal polishing can be performed by an extremely simple operation.

[Effects of the Invention] As explained above, in the polishing apparatus of the present invention,
By changing the center of rotation of the polishing wheel with respect to the longitudinal direction of the material to be polished, it becomes possible to freely perform both vertical polishing and horizontal polishing with a single-stand device. Moreover, since this switching is performed by an extremely simple operation of rotating a rotating body, the time required for adjusting Hl is greatly shortened, and the system can be installed with excellent operating efficiency! You can get the product that meets your needs.

[Brief explanation of the drawing]

FIG. 1 shows a polishing apparatus according to an embodiment of the present invention, and FIG. 2 shows the positional relationship between the steel pipe and the polishing wheel during vertical polishing.
Figure 3 shows the positional relationship between the steel pipe and the polishing wheel during horizontal polishing, Figure 4 shows the steel pipe seen from above during polishing, and Figure 5 shows V-■ in Figure 4. The holder is shown in the direction, and FIG. 6 is a sectional view of the holder. 42: Polishing wheel 34: Rotating body 37: Support body 38: Metal 39: Operation handle 45: Polishing wheel drive motor 60:
Holding mechanism P: 1lil tube (material to be polished) 7, -^Gosenzu A-^- Porridge diagram

Claims (3)

[Claims] (1) A polishing wheel that rotates in contact with the outer peripheral surface of a cylindrical or cylindrical material to be polished, a rotating body that supports the polishing wheel and is equipped with a polishing wheel drive motor, and The rotating body is provided with a support that rotates the rotary body with a rotation center in a direction perpendicular to the longitudinal direction, and by rotating the rotary body, the rotation center of the polishing wheel can be set at right angles or parallel to the polishing wheel, corresponding to vertical polishing or horizontal polishing. A polishing device that can be used for both vertical and horizontal polishing. (2) A polishing device for both vertical and horizontal polishing, characterized in that a plurality of polishing wheels according to claim 1 are arranged at equal intervals in the circumferential direction on the circumferential surface of a tubular or cylindrical material to be polished. . (3) A pair of holding mechanisms for rotatably supporting the material to be polished are provided on the upstream and downstream sides of the polishing wheel according to claim 1 in the conveyance direction of the material to be polished. Vertical and horizontal polishing equipment