JPH08323594A - Polishing device - Google Patents

Abstract

PURPOSE: To polish a bar member along the axial direction by installing such a mechanism as making an optionally rotating polishing member and an optionally rotating work relatively move in front and in the rear. CONSTITUTION: When a power source is put into circuit, a rotative driving source 9 for rotating a first work W and a rotative driving source 23 for rotating a second polishing member 30 are rotated by a fixed angle and stopped. Receiving this stop signal, a slide device 15 operates and a mount 14 starts to move in front and in the rear. With this longitudinal motion of this mount 14, the work W is polished by a polishing member 30 along the longitudinal direction. Then, it is polished for the specified time, the mount 14 comes to a stop. With this stop signal, the first rotative driving source 9 and the second rotative driving source 23 are rotated by the specified angle again. With these operations repeated, the work W is polished over the whole surface in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for polishing a surface of a work, and more particularly, to a polishing device suitable for polishing a core pin which is a component of a mold used for molding an injection molded product. Regarding

[0002]

2. Description of the Related Art A work is fixed to a rotating device such as a lathe,
A method of polishing the surface by pressing sandpaper, which is a polishing member, while rotating the work is known.
This is a polishing method particularly effective for a work having a circular cross section. If the cross-sectional shape of the work is non-circular (for example, elliptical or square),
A method of polishing each surface of the work with a sander that fixes and rotates the work is also adopted.

[0003]

However, in the former case of the above-mentioned prior art, there is a limit to what the surface is polished, and minute streak-like scratches are formed in the rotating direction of the work. Further, in the latter case, since it is partially polished, minute scratches are formed in irregular directions. Here, a core pin will be exemplified and described as an example of the work. It is a part of a mold used for injection molding and the like. After the completion of molding, the core pin slides out on the inner surface of the molded product when the mold is opened. At this time, the molded product firmly holds the core pin by the pressure of the resin, the contracting force when the resin is solidified, and the like. If you use the core pin processed by the above method here, the resin will flow into the minute scratches on the circumference,
Furthermore, the core pin was hard to come off from the molded product.

Then, it was considered to hang the polishing member in the longitudinal direction of the core pin (in the direction away from the molded product), but there is no such device, and the core pin is fixed and the polishing member is moved manually in the longitudinal direction. I was polishing Therefore, the productivity of the core pin is poor and the mold is expensive.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to attach a polishing member which comes into contact with the outer periphery of a work on a base and to rotate the polishing member arbitrarily. And a rotary plate that rotates up and down with one end as a fulcrum is attached to the base, and a work gripping member and a rotary member that arbitrarily rotates the work are attached to the rotary plate. It is characterized in that a rod-shaped body provided with a mechanism for moving the member relative to and back can be polished along the axial direction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. On the upper surface of the base 1, a rotating plate 3 is disposed, one end of which is rotatably attached via a support shaft 2. Also,
A male screw member 4 protruding from the base 1 is mounted on the other end of the rotating plate 3, and the male screw member 4 is also mounted.
The rotating plate 3 is fixed by two nuts 5 and 6 screwed together. The angle of the rotating plate 3 is set by moving the nuts 5 and 6 up and down. 7 is the rotating plate 3
Scale (memory) for easily setting the tilt angle of
Is. A chuck device 8 that holds the work W and that can be opened and closed, and a first rotary drive source 9 that rotates the chuck device 8 are fixed to the upper surface of the rotating plate 3. In the present embodiment, the first rotary drive source 9 and the chuck device 8 are connected via the coupling 10, but the chuck device 8 may be directly fixed to the first rotary drive source 9. Reference numeral 11 is a bearing for supporting the chuck device 8 interposed between the chuck device 8 and the first rotary drive source 9. The action of the force in the direction of gravity on the first rotary drive source 9 is prevented as much as possible. In addition, the work W
The work fixing member 12 holding one end (on the side opposite to the chuck device 8) is fixed. In this embodiment, a rotatable fixing pin 13 is attached.

A slide device 15 is fixed to the upper surface of the base 1 as shown in FIG. 3 so that the mounting table 14 can move only in one axis direction. In this slide device 15, the mounting table 14 can be moved (moved back and forth) by the rotation of the ball screw shaft 16. Of course, the ball screw shaft 16 is rotated by the rotary drive source 17, and the rotary drive source 17 can be arbitrarily rotated (normal rotation, reverse rotation) and stopped by a general control method. A plate 18 bent in an L shape is fixed to the mounting table 14. A fixing plate 19 is attached to the plate 18 with bolts 20 and 2
It is fixed by 1.

A pulley 22 is rotatably attached to the front surface of the fixed plate 19, and the pulley 22 is connected to an output shaft of a second rotary drive source 23 attached to the rear surface of the fixed plate 19. There is. In this embodiment,
Although the pulley 22 and the output shaft of the second rotary drive source 23 are connected via the coupling 24, the pulley 22 may be directly attached to the output shaft. Although the second rotary drive source 23 is fixed to the fixed plate 19 via the pipe member 24, the second rotary drive source 23 may be directly fixed to the fixed plate 19.

Below the front surface of the fixed plate 19, an angle adjusting plate 26 to which a pulley 25 is attached is attached at a position facing each other. The angle adjusting plate 26 has a long hole 27.
Is formed, and the angle adjusting plate 26 is moved and adjusted within the range of the elongated hole 27. As the fixing method, the bolt 28 is used in this embodiment. Reference numeral 29 is a tension adjusting device for adjusting the tension of the polishing member, which is constantly urged downward by a spring or the like (see FIG. 2). Further, 30 is a polishing member such as sandpaper, which is of course wound around the work W on the pulleys 22 and 25 and various pulleys 31. Reference numeral 32 is a pressing device for preventing the polishing member 30 from coming off from the pulley 22 and the like, and is constituted by pressing the pressing pulley 33 against the pulley 22. That is, the polishing member is held by the pulley.

Next, a method of setting each rotary drive source before operation will be described. First, the nuts 5 and 6 which fix the rotating plate 3 are loosened and left in a free state. Next, the work W is fixed to the chuck device 8. Next, the tilt angle of the rotating plate 3 is set and the nuts 5 and 6 are tightened to securely fix the rotating plate 3. Next, the angle of the angle adjusting plate 26 and the position in the height direction are set in consideration of the winding angle of the polishing member 30 around the work W, the tension, and the like, and the bolts 28 are fixed. Next, the moving range of the mounting table 14 of the slide device 15 and the center position of the moving range are set. Further, the interval of intermittent rotation of the first rotary drive source 9 and the second rotary drive source 23 is also set. The setting of these intermittent rotation intervals is generally performed using a timer. The timer of this embodiment is used for the setting.

After setting the above, the power sources such as the drive sources are turned on. When the power is turned on, the first rotary drive source 9 and the second rotary drive source 23 rotate by a certain angle and stop. Upon receiving this stop signal, the slide device 15 operates and the mounting table 14
Starts moving back and forth. The work W is polished in the longitudinal direction by the polishing member 30 by the back and forth movement of the mounting table 14. If the polishing table is polished for a certain period of time, the mounting table 14 will stop,
The stop signal causes the first rotary drive source 9 and the second rotary drive source 23 to rotate again at a constant angle. By repeating such an operation, the entire surface of the work W is polished in the longitudinal direction (see FIG. 4).

A ring member 34 is detachably fixed to the pulley 31 and the like in this embodiment by bolts 35, and the width H of the pulley can be adjusted according to the width of the polishing member 30 used. ing. A ring member is also detachably attached to the pressing pulley 33.

[0013]

According to the present invention, a polishing member that comes into contact with the outer periphery of a work is mounted on a base, and a rotary drive source that arbitrarily rotates the polishing member is provided. The base is vertically moved with one end as a fulcrum. A rod-shaped member provided with a rotating plate for rotating, a workpiece gripping member and a rotating member for arbitrarily rotating the workpiece attached to the rotating plate, and a mechanism for moving the workpiece and the polishing member back and forth relatively. Because I made it possible to polish the body along the axial direction,
It is possible to improve the productivity of a work that is polished in the vertical direction.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a front view of the polishing member driving unit of FIG.

3 is a partially cutaway external perspective view of the slide device of FIG. 1. FIG.

FIG. 4 is an operation chart of the present invention.

5 is a partially cut top view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Support shaft 3 Rotating plate 4 Male screw member 5,6 Nut 7 Scale 8 Chuck device 9 First rotation drive source 14 Mounting table 15 Sliding device 17 Rotation drive source 18 Plate 19 Fixing plate 22 Pulley 23 Second Rotation drive source 25 Pulley 26 Angle adjustment plate 30 Polishing member W Work

Claims (1)

[Claims] 1. A rotary member for mounting a polishing member that comes into contact with the outer periphery of a work on a base, and arranging a rotary drive source for arbitrarily rotating the polishing member, and rotating the base vertically with one end as a fulcrum. A moving plate is attached, a work gripping member and a rotating member for arbitrarily rotating the work are attached to the rotating plate, and a rod-like body provided with a mechanism for moving the work and the polishing member back and forth in the axial direction. Polishing device designed to be able to polish along.