JP2607323B2 - Swing type polishing machine - Google Patents

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 performing polishing by stirring an object to be polished together with an abrasive in a tank, and more particularly, to an oscillating apparatus for performing high-efficiency polishing by oscillating a tank. The present invention relates to a polishing machine.

[0002]

2. Description of the Related Art Various types of polishing apparatuses, such as a rotary type, a vibration type, and a centrifugal type, are well known as a polishing apparatus for performing polishing by stirring an object to be polished together with an abrasive in a tank.

[0003] The principle of polishing in each system will be described. A rotary polishing apparatus is most commonly used and is also called a rotary barrel, and is mounted in a cylindrical or polygonal tank supported rotatably about a horizontal axis. The object to be polished is polished by accommodating the object to be polished together with the abrasive and rotating the tank around the axis to agitate the abrasive and the object to be polished in the tank.

[0004] In addition, the vibration type polishing apparatus polishes an object to be polished by vibrating a tank having an open upper portion so that an abrasive is brought into contact with the object to be polished in the tank.

A centrifugal polishing apparatus is configured to revolve while rotating a plurality of tanks.

[0006]

However, the rotary polishing apparatus has a problem that the polishing efficiency is low because the polishing is performed only by the upper fluidized bed of the material in the tank, and the closed polishing tank is used. In addition, it is not easy to input and discharge the material, it is not possible to operate while visually observing the material, and wet polishing using water is premised. There is a problem that it is difficult to dispose.

On the other hand, in a vibration type polishing apparatus, polishing is performed by material vibration and a material flow accompanying the vibration, so that the polishing efficiency is higher than that of a rotary method. The material can be easily charged and discharged from the tank, and the operation can be performed while visually observing the material in the tank. Dry polishing can be performed by using a dust collector, but the noise caused by vibration is large. There's a problem.

Although a centrifugal polishing apparatus can achieve higher polishing efficiency than a vibration polishing apparatus, it has the above-mentioned problems due to the necessity of using a closed tank and has a complicated structure. There was a problem that the cost was high.

In order to solve such a problem of the conventional type polishing apparatus, the present applicant first shakes a tank whose upper part is opened, thereby causing the material in the tank to move in a vertical plane.
The present invention provides a swinging type polishing apparatus in which a trajectory of a U-shape is drawn and caused to flow. However, as disclosed in a crank mechanism as a specific example of the means for rocking the tank, a rocking mechanism that maximizes the effect of the rocking type polishing apparatus has not yet been proposed.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an oscillating polishing apparatus capable of further improving polishing efficiency.

[0011]

SUMMARY OF THE INVENTION A swing type polishing apparatus according to the present invention has an open upper portion and a swingable tank in which an object to be polished is contained together with an abrasive, and the tank is reciprocated and swung. An oscillating polishing apparatus having oscillating driving means, wherein the oscillating driving means comprises: a cylindrical cam which is rotationally driven by the driving means; a reciprocating member which engages with the cylindrical cam and linearly reciprocates; The rack consists of a movable member whose pinion meshing position with the pinion is adjustable, and a pinion that meshes with this rack and is linked to the rocking motion of the tank. The pinion can be replaced with any one of various diameters. It is characterized by having been done.

Preferably, the cam groove of the cylindrical cam comprises a folded portion formed of an arc groove, a folded portion connected to the folded portion, and an intermediate portion connected between the folded portions, and a shaft is formed in the folded portion. The inclination angle of the groove with respect to the core is set so as to be smaller than the middle part.

[0013]

According to the swing type polishing apparatus of the present invention, when the cylindrical cam is driven to rotate, the rack reciprocates, and the pinion meshing with the rack reciprocates to reciprocate the tank, so that the cam groove of the cylindrical cam is reciprocated. By appropriately designing the shape, it is possible to arbitrarily set the velocity distribution at the time of rocking of the tank. For example, by setting the cam groove shape such that a large acceleration acts at the rocking end of the tank, the rocking speed As compared with the case where a crank mechanism or the like that changes in a sine curve is used, the effect of stirring and flowing the material in the tank is remarkable, and higher polishing efficiency can be obtained. Further, by changing the pinion diameter, the swing angle range of the tank can be changed without changing the cylindrical cam.

The cam groove is formed by a folded portion, a folded portion, and a middle portion, and the folded portion is formed by an arc-shaped groove so as not to apply an excessive impact. By making the tilt angle with respect to the shaft center small and swinging at high speed, the acceleration acting near the swing end increases, and high polishing efficiency can be achieved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a swing type polishing apparatus according to the present invention will be described below with reference to FIGS.

1 and 2, reference numeral 1 denotes a gantry, and a pair of portal frames 3a, 3b are provided upright at an appropriate distance from the base 2. On the lower surface of the base 2, casters 4a
And jack bolts 4b are appropriately arranged so that they can be moved to any position and installed. Between the portal frames 3a and 3b, a tank 5 whose upper part is open and in which an object to be polished is stored together with an abrasive is disposed. The tank 5 includes a bearing unit 7a in which support shafts 6a and 6b projecting from both ends thereof are installed on the portal frames 3a and 3b.
By being rotatably supported at 7b, it is swingably supported. One support shaft 6a is provided with a bearing unit 7
The pinion 8 penetrates a and protrudes to the outside, and a pinion 8 is fixed to the tip end.

A motor base 10 is installed on the base 2 outside the portal frame 3a.
The drive motor 11 is mounted in a direction orthogonal to the axis directions of a and 6b. A support shaft 13 is mounted on the outer surface of the gate-shaped frame 3a above the drive motor 11 via a pair of mounting brackets 12, and the support shaft 13 is provided with a bearing 14 through a bearing 14 as shown in detail in FIG. A 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 a toothed pulley 17 mounted on an output shaft of the drive motor 11.
Is wound, and the drive motor 11 drives the cylindrical cam 15 to rotate.

As shown in FIG. 4, the cam groove 15a of the cylindrical cam 15 has a folded portion A at the reciprocating end, a folded portion B connected to the folded portion A,
A turn-around portion B and an intermediate portion C connecting between the portions B are provided. The folded portion A is an arc-shaped groove having a relatively small radius of curvature so as to be smoothly and quickly folded without receiving an excessive impact. In the folded portion B, the inclination angle with respect to the axis of the cylindrical cam 15 is larger than that of the intermediate portion C. Is made smaller. Thus, when the cylindrical cam 15 is rotated at a constant speed, the member engaged with the cam groove 15a is rapidly turned at an acceleration within a range not to receive an excessive impact at the turned portion A at the moving end, and then relatively turned at the portion B near the turned portion. It moves at high speed, and moves at relatively low speed in the middle part.

At a position above the cylindrical cam 15, as shown in detail in FIG.
0 is attached to the portal frame 3a. This slide guide 20 is arranged in parallel with the axis of the cylindrical cam 15,
A reciprocating member 21 movable along the slide guide 20 is provided with a cam groove 15 at the upper end position of the cylindrical cam 15.
A cam follower 22 that engages with a is mounted via a mounting bracket 23. A support bracket 24 whose height can be arbitrarily adjusted is mounted on the reciprocating member 21, and a rack 25 that meshes with the pinion 8 is mounted on the support bracket 24. 26 is a support bracket 2
A long hole for position adjustment provided at 4 and 27 are fixing bolts.

In the above configuration, in the case of wet polishing,
Abrasive (abrasive stone), water and the object to be polished are put into tank 5,
In the case of dry polishing, an abrasive (polishing stone, polishing medium) is placed in the tank 5.
And the object to be polished are charged. Since the top of the tank 5 is open, there is no need to open and close the lid at the time of charging the material.
Work is extremely easy.

When the drive motor 11 is driven after the input of the material, the cylindrical cam 15 rotates, and the reciprocating member 21 reciprocates along the slide guide 20 and the rack 25 reciprocates. The reciprocating rotation of the pinion 8 meshing with the, causes the tank 5 to reciprocally swing.

At this time, the cam groove 15a of the cylindrical cam 15
The reciprocating member 21 is configured to be quickly turned at the moving end within a range that does not give an excessive impact, to be moved at a relatively high speed near the moving end, and to be moved at a relatively low speed in the middle. The tank 5 oscillatingly driven through the pinion 8 and 25 rotates at a relatively high speed in the vicinity of the oscillating end and then in the oscillating direction with a large acceleration within a range where an excessive impact is not applied at the oscillating end. After the reversal, the vicinity of the swing end is swung at a relatively high speed, and then the intermediate portion is swung at a relatively low speed. Therefore, the entire material in the tank 5 can be made to flow so as to draw an eight-shaped trajectory in the vertical plane. Note that the swing range of the tank 5 can be adjusted without changing the cylindrical cam 15 without changing the pinion 8.
Can be selected by changing the diameter of the rack 25 and adjusting the vertical position of the rack 25 with the support bracket 24 accordingly. Further, the swing speed can be arbitrarily selected by changing the rotation speed of the drive motor 11. The selection is appropriately made according to the input amount of the material, the type of the abrasive and the object to be polished, and the finished state of the polished surface.

Thus, as the material in the bath 5 flows along a more suitable figure-eight trajectory in the vertical plane as the bath 5 swings, all the materials move uniformly and strongly. And extremely excellent polishing efficiency can be obtained. Moreover, since the upper surface of the tank 5 is open, the tank 5 can be operated while directly observing the motion state of the material in the tank 5.

In the case of dry polishing, the dusty material generated by the polishing is sucked by a dust collector, whereby a clean working environment can be maintained, and the problem of pollution in wet polishing can be solved.

When the polishing is completed, the material is discharged from the tank 5. Also in this case, since the tank 5 is an open container, the operation is very simple as in the case of charging the material.

The inside of the tank 5 itself is divided into a plurality of parts in the direction of the pivot axis by a partition plate perpendicular to the pivot axis, and a plurality of types of workpieces are put into each of the partitions, whereby a plurality of types of workpieces are introduced. The workpiece can be polished at the same time.

When polishing small works such as spoons and hawks, these works are placed in a basket-shaped inner container and placed in the tank 5, so that only the work can be easily taken out of the tank 5. And workability is improved.

Also, in this cage type inner container, a plurality of partitions can be provided in the direction of the pivot axis so that a plurality of types of workpieces can be polished simultaneously.

Furthermore, when a large number of small work storage spaces are formed in the basket type inner container and one or a small number of works are stored in each work storage space and the polishing operation is performed, the work itself during the polishing operation is performed. Does not move much, and only the abrasive passes through the mesh of the cage-type inner container to grind the work in a state where they are prevented from colliding with each other. Polishing is possible. Such a polishing method can be effectively realized by significantly improving the flow of the abrasive according to the present invention.

[0030]

According to the oscillating polishing apparatus of the present invention, when the cylindrical cam is driven to rotate, the rack reciprocates, and the pinion meshing with the rack reciprocates and the tank reciprocates and oscillates. By appropriately designing the cam groove shape, the velocity distribution at the time of rocking of the tank can be arbitrarily set.For example, by forming the cam groove shape such that a large acceleration acts at the rocking end of the tank, Compared to the case of using a crank mechanism or the like in which the dynamic speed changes in a sine curve, the effect of stirring and flowing the material inside the tank is remarkable, and higher polishing efficiency can be obtained. Further, by changing the pinion diameter, the swing angle range of the tank can be changed without changing the cylindrical cam.

The cam groove is formed by a folded portion, a folded portion, and an intermediate portion, and the folded portion is formed by an arc-shaped groove so as not to apply an excessive impact. By making the tilt angle with respect to the shaft center small and swinging at high speed, the acceleration acting near the swing end increases, and high polishing efficiency can be achieved.

[Brief description of the drawings]

FIG. 1 is a partial 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.

FIG. 5 is an enlarged detailed view of a portion V in FIG. 1;

[Explanation of symbols]

 5 Tank 8 Pinion 11 Drive motor 15 Cylindrical cam 15a Cam groove 21 Reciprocating member 25 Rack A Folding part B Near folding part C Middle part

Claims (2)

(57) [Claims] 1. An oscillating polishing apparatus comprising an oscillating tank having an upper part opened and containing an object to be polished together with an abrasive therein, and oscillating driving means for reciprocating the tank. The swing drive means is rotatably driven by the drive means, a reciprocating member which engages with the cylindrical cam and reciprocates linearly, and a position at which the reciprocating member meshes with the pinion is adjustable.
A rack attached to the ability, Ri consists a pinion interlocked with the swinging of the vessel with meshing with the rack, pinion
Is an oscillating polishing apparatus characterized in that it can be replaced with any one of various diameters . 2. A cam groove of a cylindrical cam includes a folded portion formed of an arc groove, a folded portion connected to the folded portion, and an intermediate portion connected between the folded portions, and the folded portion has an axial center. 2. The oscillating polishing apparatus according to claim 1, wherein the inclination angle of the groove is smaller than that of the intermediate portion.