JPH0557596A - Rocking type polishing device - Google Patents

Abstract

PURPOSE:To provide a rocking type polishing device provided with a rocking mechanism capable of improving the extent of polishing efficiency, in this rocking type polishing device which rocks a container housing an abrasive material and a workpiece or the like for polishing. CONSTITUTION:A driving motor 11, a cylindrical cam 15, a reciprocating traveling member 21 and a rocking lever 8 are used as a rocking-driving means of a container 5, and this container 5 is rocked almost in the whole rocking stroke excepting a spot in and around the rocking end almost at uniform velocity, thereby making large acceleration act on the container at the rocking end, and stirring and flowing actions to the material inside the container 5 are made so remarkably, thus yet higher polishing efficiency is obtained.

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 agitating an object to be abraded with a polishing agent in a container for polishing, and more specifically, a rocking for highly efficient polishing by rocking the container. Type polishing apparatus.

[0002]

2. Description of the Related Art Various types of polishing devices such as a rotary type, a vibration type and a centrifugal type are well known as a polishing device for agitating an object to be polished in a container with an abrasive.

To explain the polishing principle in each system, the rotary polishing apparatus is the most general and is also called a rotary barrel, and together with the polishing agent, it is contained in a cylindrical container rotatably supported around a horizontal axis. The object to be polished is contained by containing the object to be polished and rotating the container around the axis to agitate the abrasive and the object to be polished in the container.

Further, in the vibration type polishing apparatus, a container having an open upper part is finely vibrated up and down to bring an abrasive into contact with the object to be polished in the container to polish the object to be polished. Further, it is also practiced to blast the shot material from the opening of the container to enhance the polishing effect.

Further, the centrifugal polishing apparatus is constructed such that a plurality of cylindrical containers are revolved around their own axes.

[0006]

However, in the rotary polishing apparatus, there is a problem that polishing efficiency is low because mainly the surface layer portion of the material in the container flows, and since a sealed container is used, It is not easy to input and discharge materials,
In addition, the operation cannot be performed while visually observing the material, and wet polishing using water is premised, but there are problems such as sludge-like discharges being generated in the wet polishing, and it is difficult to dispose of the discharges. is there.

On the other hand, in the vibration type polishing apparatus, since the polishing is performed by the material vibration and the material flow caused by the vibration, the polishing efficiency is higher than that of the rotary method, and since the container whose upper part is opened is used, It is easy to put the material in and out of the container, and the operation can be performed while visually checking the material in the container. Furthermore, dry polishing can be performed by using a dust collector, but noise due to vibration is large. There's a problem. Further, since the material flow due to the vibration is not so remarkable, the material is not sufficiently stirred, and the polishing effect cannot be remarkably improved even when the blast is used together from the container opening.

Further, the centrifugal type polishing apparatus can obtain a higher polishing efficiency than the vibration type polishing apparatus, but it has the above problems due to the necessity of using a closed container, and the apparatus structure is complicated. There was a problem of high cost.

In order to solve the above problems of the conventional polishing apparatus, the applicant of the present invention swings the container whose upper part is opened first so that the material in the container is shaped like a figure 8 in the vertical plane. Provided is a rocking type polishing apparatus that draws a locus and makes it flow. However, as disclosed in the crank mechanism as a specific example of the means for swinging the container,
It has not been possible to propose a rocking mechanism that maximizes the effects of the rocking type polishing apparatus.

In view of the above conventional problems, it is an object of the present invention to provide an oscillating polishing apparatus capable of further enhancing polishing efficiency.

[0011]

SUMMARY OF THE INVENTION In a rocking type polishing apparatus of the present invention, an upper portion is opened and a rockable container in which an object to be polished is stored together with an abrasive, and the container is rocked back and forth. An oscillating type polishing apparatus having an oscillating drive means is characterized in that the oscillating drive means oscillates substantially the entire oscillating stroke except for the vicinity of the oscillating end at an approximately constant speed.

As the swing drive means, for example, a combination of a constant velocity reciprocating mechanism using a heart cam and a swing lever, a rotary actuator, or the like can be used, but preferably, the drive means and the drive means are rotationally driven. A cylindrical cam, a reciprocating member that engages with the cylindrical cam and linearly reciprocates at substantially the same speed over substantially the entire stroke except for the vicinity of the moving end, and a swing lever that extends from the container and engages with the reciprocating member. It consists of and.

[0013]

According to the swing type polishing apparatus of the present invention, the swing mechanism changes the swing speed in a sinusoidal curve by swinging the container at substantially the same swing speed over the entire swing stroke except for the vicinity of the swing end. As compared with the case where the above-mentioned method is used, a large acceleration acts on the container at its swinging end, so that the stirring and fluidizing action on the material inside the container remarkably appears, and higher polishing efficiency can be obtained.

If a reciprocating member and a rocking lever which are linearly reciprocally moved by a cylindrical cam are used as the rocking driving means, a rocking form having an arbitrary speed distribution can be easily realized by the cam groove shape of the cylindrical cam. At the same time, an arbitrary swing range can be easily set by changing the engaging position of the swing lever with respect to the reciprocating member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the rocking type polishing apparatus of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, reference numeral 1 denotes a pedestal, on which a pair of gate-shaped frames 3a and 3b are erected at appropriate intervals from the base 2. On the lower surface of the base 2, casters 4a
The jack bolt 4b is appropriately arranged so that the jack bolt 4b can be moved to an arbitrary position for installation. An upper part is opened between the gate-shaped frames 3a and 3b, and a container 5 for accommodating an object to be polished together with an abrasive is disposed inside. The container 5 has support shafts 6a and 6b projecting from both ends thereof.
Bearing unit 7 installed on the gate-shaped frames 3a, 3b
It is rotatably supported by being rotatably supported by a and 7b.

One support shaft 6a penetrates the bearing unit 7a and projects to the outside thereof, and a swing lever 8 is provided at the tip thereof.
Is fixed. A long hole 9 is formed in the swing lever 8 along the longitudinal direction thereof.

A motor base 10 is installed on the outside of the gate-shaped frame 3a on the base 2, and a support shaft 6 is mounted thereon.
The drive motor 11 is attached in a direction orthogonal to the axial center directions of a and 6b. A support shaft 13 is attached to a position above the drive motor 11 on the outer surface of the gate-shaped frame 3a via a pair of mounting brackets 12, and a cylinder as shown in detail in FIG. The cam 15 is rotatably supported. A toothed pulley 16 is fixed to one end of the cylindrical cam 15, and a timing belt 18 is provided between the cylindrical cam 15 and the toothed pulley 17 mounted on the output shaft of the drive motor 11.
Is wound and the drive motor 11 drives the cylindrical cam 15 to rotate.

As shown in the development view of FIG. 4, the cam groove 15a of the cylindrical cam 15 is proportional to the rotation angle and the moving distance in the axial direction, and engages with the cam groove 15a when the rotary cam 15 is rotated at a constant speed. The member is formed so as to reciprocate at a constant speed except both ends. The groove shape in the vicinity of the moving end has a relatively small arc-shaped curve so that the groove can be smoothly folded back without receiving an excessive impact.

At the upper position of the cylindrical cam 15, as shown in detail in FIG.
0 is attached to the portal frame 3a. The slide guide 20 is arranged parallel to the axis of the cylindrical cam 15,
As shown in FIG. 6, a cam follower 22 that engages with the cam groove 15a at the upper end of the cylindrical cam 15 is attached to the reciprocating member 21 that is movable along the slide guide 20. Further, the arm 23 is hung downward from the reciprocating member 21, and a plurality of bolt holes 24 are provided at appropriate intervals along the longitudinal direction thereof. Bolt hole 2
4 is an engagement roller 2 that engages with the elongated hole 9 of the swing lever 8.
5 mounting bolts 26 are screwed together.

The engagement roller 25 includes a mounting ring 25a and
It is composed of a ball bearing 25b and a washer 25c.
Engage with the slot 9.

Next, the structure of the assembly-type container 5 in this embodiment will be described in detail with reference to FIGS. At both ends of the container 5, octagonal frame bodies 31 are arranged along the outline of the sectional shape perpendicular to the axis of the container 5. The frame body 31 is made of steel having an L-shaped cross section. On both surfaces of the frame body 31 at both ends of the container 5 facing each other, end plates 32 are formed so as to close the space surrounded by the frame body 31.
Is installed. The end plate 32 is a core plate 33 made of a steel plate.
9, the outer surface of which is provided with a lining 34 of rubber, urethane, or the like, and as shown in detail in FIG. 9, the bolt 35 fixed to the core plate 33 so as to project toward the frame 31 is screwed to the bolt 35. The nut 36 is fastened and fixed to the frame 31.

Of the outer peripheral surface of the container 5, the upper surface is open, and the other seven surfaces are the same as the end plates 32.
It is closed by a side plate 37 formed by applying a rubber or urethane lining 39 to the outer surface of the. As shown in detail in FIG.
Bolts 4 fixed to the core plate 38 so as to project toward
It is fastened and fixed to the frame body 31 with 0 and a nut 41 screwed thereto.

The side plates 37a and the side plates 37b adjacent to each other on both sides of the upper surface opening portion 50 of the container 5 are integrally connected to each other by a lining 39, and the side surface plate adjacent to the upper surface opening portion 50. By removing the nut 41 that fixes 37a to the frame 31, the side plate 37
A is opened to open the upper surface opening portion 50 to a large extent so that it can be easily taken out even when the inner car is stored in the container 5. The other side plate 37c at the lower diagonal and the side plate 37d at the bottom are independent from each other.
The joint portion between b and 37c and the joint portion between 37c and 37d are covered with a reinforcing and joint sealing plate 42. At both ends of the reinforcing and joint seal plate 42, as shown in FIG.
As shown in detail in (a) and (b), the bolts 43 and the nuts 44 with the side plates 37b, 37c, or 37c, 37d sandwiched between the frame 31 and the reinforcing and joint sealing plate 42.
It is fastened and fixed at.

In FIGS. 7 and 8, the support shaft 6 for swingably supporting the container 5 is vertically fixed to the mounting plate 45, and the mounting plate 45 is attached to the end plate 32 substantially at the center thereof with the bolt 4.
6 and a nut 47.

In the above construction, in the case of wet polishing,
An abrasive (polishing stone), water and an object to be polished are put into the container 5, and in the case of dry polishing, an abrasive (polishing stone, polishing medium) and an object to be polished are put into the container 5. Since the container 5 has the upper surface opening portion 50, it is not necessary to open and close the lid when the material is charged, and the work is extremely easy.

When the drive motor 11 is driven after the material is charged, the cylindrical cam 15 rotates, and the reciprocating member 21 reciprocates along the slide guide 20 accordingly, and the arm 23 hung from the reciprocating member 21. Optional bolt hole 24
The engaging roller 25 attached to the
Since the reciprocating member 21 reciprocates, the rocking lever 8 rocks, and the container 5 rocks reciprocally.

At this time, the cam groove 15a of the cylindrical cam 15 is
Since the reciprocating member 21 is configured to move at a constant speed except near the moving end, the container 5 also swings at a substantially constant speed via the swing lever 8 except near the swinging end, and swings. At the end, the swing direction is reversed with a large acceleration within a range where it does not become excessive. Therefore, the entire material in the container 5 can be surely flowed so as to draw an 8-shaped trajectory in the vertical plane. The swing range of the container 5 can be selected by changing the mounting position of the engagement roller 25 with respect to the arm 23 without changing the cylindrical cam 15. In the illustrated example, as shown in FIG. 2, any of 70 °, 90 ° and 120 ° can be selected by the bolt hole 24 for mounting the engagement roller 25. The swing speed can be arbitrarily selected by changing the rotation speed of the drive motor 11. The choices are the amount of material input,
This is appropriately performed depending on the type of the abrasive and the object to be polished, and the finish state of the polished surface.

Thus, as the container 5 rocks, the material in the container 5 flows in a more appropriate 8-shaped trajectory in the vertical plane, so that all the materials move uniformly and strongly. ,
Extremely excellent polishing efficiency can be obtained. Further, since the container 5 has the upper surface open portion 50, it is possible to operate the container 5 while directly observing the motion state of the material in the container 5.

In the case of dry polishing, a dust-collected dust generated by polishing is sucked by a dust collector to maintain a clean working environment and solve the problem of pollution in wet polishing.

When the polishing is completed, the material is discharged from the container 5. In this case as well, since the container 5 is an open container, the work is extremely simple as in the case of material input.

The inside of the container 5 itself is partitioned into a plurality of parts in the direction of the swing axis by a partition plate which is perpendicular to the swing axis, and different kinds of works are introduced into the partitions.
It is also possible to polish a plurality of types of works at the same time. As the partition plate, a core plate with a lining is used similarly to the side wall of the container 5.

For polishing small works such as spoons and forks, if these works are placed in a basket-shaped container and placed in the container 5, only the work can be easily removed from the container 5. And workability is improved. Workability is further improved by simply opening the side plates on both sides of the upper surface opening 50 as described above when the container in the basket is taken in and out.

Also in this basket type container, a plurality of partitions may be provided in the swing axis direction so that a plurality of types of works can be polished simultaneously.

Further, if a large number of small work storage spaces are formed in this cage-shaped container and one or a few works are stored in each work storage space to perform a polishing operation, the work itself will be included during the polishing operation. Does not move significantly, and only the abrasive passes through the mesh of the basket-shaped container to polish the workpieces while preventing them from colliding with each other. Can be polished. Such a polishing method can be effectively realized by significantly improving the flow of the polishing agent according to the present invention.

The container 5 of this embodiment has a frame 31, a pair of end plates 32, and seven side plates 37 (37a, 37b,
37c, 37d) are assembled and configured, so that when the linings 34, 39 in the container 5 need to be renewed, they need only be replaced with another end plate 32 or a side plate 37 and assembled. The work can be resumed in a short time, and the work is extremely simple as compared with the case where a new lining is applied after removing the old lining on the entire inner surface of the container having an integral structure.

In the above embodiment, the frame 31 of the container 5 and the end plate 3
Although 2 is a separate body, the core plate 3 of the end plate 32 is formed by integrating the two.
A flange corresponding to the frame 31 may be extended from 3.

Further, in the above-described embodiment, the reciprocating member linearly reciprocated by the cylindrical cam and the reciprocating lever are used as the reciprocating mechanism of the reciprocating driving means. A swinging mechanism composed of a combination of a moving member and a swinging lever may be used, and further, a rotary actuator may be used as a swinging driving means to drive the swinging at a substantially constant speed.

[0039]

According to the oscillating polishing apparatus of the present invention, the oscillating speed changes in a sine curve by oscillating the container at almost the same oscillating stroke except the vicinity of the oscillating end. Compared with the case where a crank mechanism or the like is used, a large acceleration acts on the container at its swinging end, so that the stirring and fluidizing action on the material inside the container remarkably appears, and a higher polishing efficiency can be obtained. Furthermore, since the flow action of the polishing agent is significantly improved,
It is also possible to polish the work while restraining the movement of the works to some extent to prevent the works from colliding with each other, and it is also possible to realize highly accurate polishing by barrel polishing.

Further, when a reciprocating member which is linearly reciprocated by a cylindrical cam and a rocking lever are used as the rocking driving means, a rocking form having an arbitrary speed distribution can be easily realized by the cam groove shape of the cylindrical cam. At the same time, an arbitrary swing range can be easily set by changing the engaging position of the swing lever with respect to the reciprocating member.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of an oscillating polishing apparatus according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view of the swing type polishing apparatus.

FIG. 3 is a detailed view of a cylindrical cam in the swing type polishing apparatus.

FIG. 4 is a development view of a cam groove of a cylindrical cam in the swing type polishing apparatus.

5 is an enlarged detailed view of a portion A of FIG.

FIG. 6 is an enlarged detailed view of a B part in FIG.

FIG. 7 is a vertical cross-sectional view perpendicular to the axis of the container in the rocking type polishing apparatus.

FIG. 8 is a partial vertical cross-sectional view parallel to the axis of the container in the swing type polishing apparatus.

FIG. 9 is a partially enlarged cross-sectional view showing a fastening structure between a frame body and an end plate of a container in the swing type polishing apparatus.

FIG. 10 is a partially enlarged cross-sectional view showing a fastening structure between a frame body and a side plate of a container in the same swing type polishing apparatus.

11A and 11B show a fastening structure of a frame body, a side plate, and a reinforcement / seam seal plate of a container in the same swing type polishing apparatus, FIG. 11A is a partially enlarged sectional view, and FIG. It is a figure.

[Explanation of symbols]

 5 container 7 rocking lever 11 drive motor 15 cylindrical cam 21 reciprocating member

Claims (2)

[Claims] 1. An oscillating polishing apparatus comprising an oscillating container having an open upper portion and an object to be polished together with an abrasive, and an oscillating driving means for oscillating the container back and forth. An oscillating polishing device characterized in that the oscillating driving means oscillates substantially the entire oscillating stroke except for the vicinity of the oscillating end at an approximately constant speed. 2. The swing drive means linearly reciprocates at substantially the same speed in almost the entire stroke except for the vicinity of the moving end by engaging the cylindrical cam with the driving means, the cylindrical cam rotationally driven by the driving means. 2. The rocking type polishing apparatus according to claim 1, comprising a reciprocating member for moving and a rocking lever extending from the container and engaging with the reciprocating member.