JPH1158200A - Polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a uniform polishing surface by swinging a sander head by a floating mechanism so as to copy after a work surface, and largely swinging it by a second floating plate. SOLUTION: In swinging of a first floating plate 16 by which a one holding block 17 swings and the other two holding blocks 3 become immovable, an apex position of a triangle connecting respective connecting points of circumferential three places with a leaf spring 19 of a slidingly movable shaft 18 by deflection of the leaf spring 19 collapses. However, this collapse is absorbed by a waveform formed in the circumferential direction of the leaf spring 19. Therefore, a sander head 1 is swung so as to copy after a polishing surface of a work, and is always brought into surface contact with it, and generation of a stripe on a polishing surface is prevented. An eccentric rotation quantity of an eccentric pin 10 to eccentrically rotate by rotation of a motor 9 is amplified by an actuating plate 11, and a second folating plate 5 is swung in a large circular locus through this actuating plate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus for uniformly polishing a work surface.

[0002]

2. Description of the Related Art For example, artificial marble used for a wash basin or the like is polished after being formed in a mold. Since the surface of the artificial marble molded by the mold is uneven or flawed, it is polished by a nonwoven fabric by an operator.

[0003] However, this polishing work requires skilled skills, and is also in a so-called 3K workplace which is hard, dirty and dangerous, and furthermore, dust is scattered, which is not good for health.
I make robots work.

FIG. 6 shows a conventional polishing apparatus made to work by the robot.
Thus, the sander head 30 having the nonwoven fabric 32 swinging in a circular locus was mounted.

[0005]

In this conventional apparatus, the sander head 3 swinging in a circular locus with respect to the polished surface of the work W.
0 is moved by the robot in the XX and YY directions to polish it. However, in the circular locus swing by the swing device 31, the swing is small, so that a small spiral pattern is generated.
In addition, when the sanding head 30 is moved by the robot 15 when the sander head 30 is moved by the robot 15, the sander head 30 is inclined at an angle θ around the mounting axis of the robot 15, On the other hand, there was a problem that a streak was generated on the polished surface due to one side contact.

It is an object of the present invention to provide an automatic polishing apparatus capable of obtaining a uniform polished surface without generating small spiral patterns or streaks in view of the above-mentioned conventional problems.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a holding base which is swingably disposed at a plurality of positions on a circumference of a support base, and an axis which is attached to each of the holding blocks. A sliding shaft held so as to be able to advance and retreat in a direction, a first floating plate swingably attached to a tip of the sliding shaft, pressing means for pressing the sliding shaft in a forward direction, and the holding block. A floating mechanism having a leaf spring means for applying a restoring force to the swing of the first floating plate, a holding plate holding a second floating plate in a floating state with respect to the first floating plate, and swinging the second floating plate. And a sander head attached to the second floating plate via a support member. It is swung Following the work surface by low coating mechanism, is characterized in that so as to greatly swung by the second floating plates.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a sander head, which includes a polishing sheet 2 and a driving device 3 operated by air supplied from an air supply pipe 4. When polishing artificial marble, a non-woven fabric is used as the polishing material 2, but one suitable for polishing a work such as sandpaper is used.

Therefore, the feature of the present invention comprises a floating mechanism 13 for swinging the sander head 1 in accordance with the work surface, and a swinging mechanism for swinging the sander head 1 largely.

First, the structure of the floating mechanism 13 will be described with reference to FIGS. The floating mechanism 13 includes a support base 16, a holding block 17,
The sliding shaft 18 held by the holding block 17 and the first floating plate 1 integrated with the holding plate 7 described later
2 are attached to a robot 15 via a bracket 14.

The holding block 17 is a cylindrical body, and is formed at a plurality of positions on the circumference of the base surface of the support base 16, that is, in the example shown in FIG. The support base 16 is provided at three places at intervals.
Are arranged so as to be able to swing with respect to the base surface of the base.

The support base 1 of the holding block 17
As shown in FIGS. 2 and 3, the holding block 6 is provided on the base surface of the support base 16 at a position where the support block 17 is disposed, and the holding block has a larger area than the outer periphery of the support block 17. An insertion hole 16a is opened,
Support brackets 22 are provided on the left and right in the vicinity of the holding block insertion hole 16a, and the holding block 17 is pivoted on the support bracket 22 by a pivot 23 in a plane centered on the center of a holding plate 7 described later. The structure is movably supported.

The sliding shaft 18 is held so as to be able to advance and retreat in the axial direction via a guide bush 25 fixed in the holding block 17, and is pressed in the forward direction by a spring 21 provided behind the sliding shaft. . Further, the front of the sliding shaft 18 protrudes through the base surface of the support base 16, and a spherical body 18 a is provided at the tip, and the first through a spherical bearing 24 that receives the spherical body 18 a.
The floating plate 12 is swingably mounted.

A donut-shaped leaf spring is provided on the rear end face of each holding block 17 which is arranged at a plurality of positions on the circumference of the base surface of the support base 16 so as to be swingable with respect to the base surface of the support base 16. A rear end of the slide shaft 18 is connected to the leaf spring 19 by a holding nut 20. Each holding block 17 is linked by the donut-shaped leaf spring 19, and each holding block 17 is normally held at an angular position where the sliding shafts 18 are parallel to each other. The leaf spring 19 is formed in a waveform in the circumferential direction with the connection point with the sliding shaft 18 as a vertex, and the waveform portion absorbs the displacement of the sliding shaft 18 due to the swing of the holding block 17. ing.

As shown in FIGS. 4 and 5, the swinging mechanism for swinging the second floating plate 5 is relatively slidable on the lower surface of the holding plate 7 integrated with the first floating plate 12. Is supported by the support member 8. It is effective to apply a fluororesin to the relative sliding surface of the second floating plate 5 and the holding plate 7 in order to improve the sliding.

In the swinging device for the second floating plate 5, a motor 9 having an eccentric pin 10 provided on a rotating shaft is fixedly mounted on one end of the holding plate 7, and the eccentric pin is mounted on one end of the second floating plate 5. This is a structure in which an operation plate 11 with which the engaging member 10 is engaged is fixed.

The sander head 1 has a structure mounted on the second floating plate 5 via a support member 8.

Since the present invention is configured as described above, the function of the floating mechanism 13 is such that the first floating plate 16 is constantly pressed by the sliding shaft 18 urged in the forward direction by the spring 10. The sliding shaft 18 compresses the spring 10 and moves backward together with the first floating plate 5 when the sander head 1 comes into contact with the work surface and the inclination resistance acts. That is, a direct acting floating action is performed. At this time, the leaf spring 19 bends in the axial direction and
8 absorbs backward movement.

The first floating plate 16
Since the holding block 17 is swingable, the spherical body 18a of the sliding shaft 18 and the spherical bearing 2 receiving the spherical body 18a also in a direction orthogonal to the axial direction of the sander head 1.
Slightly swing around 4 as a fulcrum. At this time, the holding block 17 swings and the leaf spring 19 bends in the bending direction, and the bending force of the leaf spring 19 applies the pressing force of the sander head 1.

More specifically, the sander head 1
When the tilt resistance acts on the first floating plate 16, the spherical body 18 a of the slide shaft 18 held by two of the three holding blocks 3 and the spherical body 18 a
a, and slightly swings around the spherical bearing 24 which receives a.
At this time, one holding block 17 swings, but the other two holding blocks 17 cannot swing. Thereby, the donut-shaped leaf spring 1 linked to each holding block 17
9 is bent in the bending direction. That is, the tilt angle floating action is performed. At this time, the spring 21 is hardly involved. Due to the bending of the leaf spring 19, a restoring force is applied to the swing of one holding block 17. That is, a pressing force is applied.

One holding block 17 swings and the other 2
When the first floating plate 16 becomes unmovable, the three holding blocks 3 connect the connection points of the three sliding shafts 18 with the leaf spring 19 on the circumference due to the deflection of the leaf spring 19.
The apex position of the square is distorted.
Absorb by the waveform formed in the circumferential direction of

As a result, the sander head 1 is swung in accordance with the polished surface of the work, and is always brought into contact with the surface to prevent the occurrence of streaks or the like on the polished surface.

Further, in the swing mechanism for swinging the sander head 1 greatly, the amount of eccentric rotation of the eccentric pin 10 eccentrically rotated by the rotation of the motor 9 is amplified by the operating plate 11 engaged with the eccentric pin 10. , This working plate 1
The second floating plate 5 is swung with a large circular locus via 1. As a result, the sander head 1 oscillates and polishes with a large circular locus with respect to the polishing surface of the work, and is polished without realizing a small spiral pattern.

Therefore, according to the floating mechanism 13, good quality polishing can be obtained by the synergistic effect of the swinging operation following the polished surface of the work and the swinging operation with the large circular locus of the second floating plate 5.

The present invention is not limited to polishing of artificial marble, but can be applied to polishing of natural stone, plastic, metal and the like.

[0026]

As described above, according to the present invention, since the sander head performs the polishing operation by a combination of the swing following the polished surface of the work and the swing of the large circular locus, small spiral patterns and streaks are generated. A uniform polished surface can be obtained without performing polishing, and the use of a robot can automatically perform high-quality polishing comparable to a skilled worker.

[Brief description of the drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a partial sectional view of a floating mechanism.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view taken along line CC of FIG. 1;

FIG. 6 is a side view of a conventional polishing apparatus using a robot.

[Explanation of symbols]

 Reference Signs List 1 sander head 2 polishing sheet 5 second floating plate 7 holding plate 8 support member 9 motor 10 eccentric pin 11 operating plate 12 first floating plate 13 floating mechanism 16 support base 16a holding block insertion hole 17 holding block 18 sliding shaft 19 plate Spring 21 Spring

Claims (1)

[Claims] 1. A holding block disposed at a plurality of positions on a circumference of a support base so as to be swingable, a sliding shaft held by each of the holding blocks so as to be able to advance and retreat in an axial direction, and A floating system comprising: a first floating plate swingably attached to a tip end; pressing means for pressing the sliding shaft in a forward direction; and leaf spring means for applying a restoring force to the swing of the holding block. A mechanism, a holding plate that holds the second floating plate so as to be able to float with respect to the first floating plate, and a swing device that swings the second floating plate;
A sander head attached to the second floating plate via a support member, wherein the sander head is swung by following the work surface by the floating mechanism, and is largely swung by the second floating plate. A polishing apparatus characterized in that: