JPS5914456A - Dry type high speed fluid polishing method and machine - Google Patents

Abstract

PURPOSE:In a polishing machine for spoon, to polish the work uniformly by making the number of teeth of a planetary gear to be coupled with a spindle for fixing the work larger than the fixed gear while making the spinning speed slower than the revolution speed. CONSTITUTION:Polishing agent composed of wood medium, fat and grinding particles is thrown into a polish tank 1 then the tank 1 is lifted and mixing is performed through rotation of a pulley 6 by means of the epindles 13, 13' thereafter the tank 1 is lowered. The works 15, 15' such as spoons are fixed to the zigs 14, 14' of the spindles 13, 13' then the pulley 6 is rotated to spin and revolve the spindles 13, 13' through the fixed gear 19 and the planetary gears 21, 21' to perform polishing. Here the number of teeth of the planetary gear is made larger than the fixed gear to make the revolution speed higher than the spinning speed thus to make the rotary speed of work against the center of gearbox 4 higher than that against the axis of spindle. Consequently even for a work having relatively deep concave face, it will cause no missing of polish.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry double-speed flow polishing method and a polishing machine used therein. ! The present invention relates to a dry two-speed fluid polishing method and a polishing machine that can perform polishing by holding a 7.

Traditionally, the workpiece (object to be polished) attached to the spindle
It is known that the workpiece is placed in a polishing ellipse filled with media to which abrasive grains and oil are attached, and the workpiece is made to flow at high speed in the media by rotating the spindle forward and backward and rotating on its own axis, thereby polishing the workpiece. (Special Publication No. 37-17645).

However, conventional polishing machines of this type usually require a driving energy of 60 horsepower or more, which is very high, and the workpiece has a relatively deep concave shape 1, such as a spoon or a ladle. Depth is 5~
If there are 100 words, the problem is that the entire surface, including the concave surface, cannot be polished uniformly. Furthermore, as an abrasive material, wood media coated with oil and abrasive grains is supplied and filled into the abrasive tank.
No. 898], this abrasive body material was used to polish a workpiece, but it is difficult to coat such a wood-based media with oil and abrasive grains and create an abrasive material that is time-consuming and costly. In addition, this yuzu abrasive material has poor abrasive durability, and when its abrasive power decreases, it must be replaced with a new abrasive material, which poses problems in terms of operability and running costs. .

The present invention was made to improve the above-mentioned circumstances.3.
A dry type that can uniformly polish the entire surface of a workpiece with a relatively deep concave surface, such as a spoon, including the concave surface, and can reduce the driving energy.The polishing operation is also simple, and running costs can be significantly reduced. An object of the present invention is to provide a high-speed fluid polishing method and a polishing machine used therein.

Namely, 1. The present inventors conducted extensive studies to achieve the above object, and found that conventional dry high-speed fluidized sanders usually have a gear ratio of fixed gear to planetary gear of about 7:1 to 5:1. In this way, the number of fixed gears is greater than the number of planetary gears, so that the spindle itself rotates 7 to 5 times while the spindle with the workpiece attached revolves around the center of the polishing tank once. The number of rotations is greater than the number of revolutions, but the depth is 5 to 100.
When polishing a workpiece with a concave surface,
While the concave surface remains unpolished, if the number of planetary gears is larger than that of the fixed gear, i.e., if the number of rotations is lower than the number of revolutions, a relatively deep concave surface, such as the one described above, can be created. It is possible to uniformly polish a workpiece having a concave surface of about 5 to 100 grains, including the concave surface, and to polish the concave surface. 7 can be improved,
Furthermore, it has been found that driving energy can be reduced.

Furthermore, instead of putting media with oil and abrasive grains attached to it into the polishing tank, fabric media is put into the polishing tank, and a small amount of the abrasive agent prepared by mixing the oil and fat and the abrasive grains is released during each operation. By adopting the addition method, the cost of the polishing material can be reduced to about 1/10, and the entire surface of a workpiece with a concave surface can be polished with good operability and cost reduction. This discovery led to the present invention.

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 shows an embodiment of the polishing machine of the present invention. In the figure, 1 is a polishing tank, and the inside of this tank is filled with media 2. As shown in FIG. 3 is a cylindrical box supported by the fuselage (not shown);
A gearbox 4 is housed within this cylindrical box 3. A cylindrical shaft body 5 is located at the center of the earthen wall of this gearbox 4.
A ring-shaped drive pulley 6 is provided on the upper end of the shaft body 5 to protrude. The cylindrical shaft body 5
is rotatably supported by bearings 8.8 fixed to the cylindrical box 3 and the pedestal 7 placed thereon, respectively, and the pulley 6 is connected via a belt 9.9 (not shown). However, it is connected to a motor, and the drive of this motor rotates the boolean IJ+6, and the cylindrical shaft body 5 and gear box 4 rotate together with this.

The gearbox 4 has bearings 10, 10, 10', 10' fixedly attached to its upper and lower walls, respectively, which are rotatably supported 71. Two rotating shaft bodies 11.
1i' is disposed, and a spindle 13° 1 is connected to the lower end of these shafts 11 and 11', which protrude through the lower wall of the gearbox 4 through joints 12 and 12'.
3' is removably fixed.・At the bottom of these spindles 13 and 13', there are jigs 14 and 1, respectively.
4' is removably attached, and a workpiece (object to be polished) 15.15 is attached to these jigs 14 and 14'.
' is removably fixed, and the rotating shaft bodies 11, 11', and the spindle 13 are integrally attached to the gear box 4140.
, 13', and the works 15 and 15' rotate (revolution along a fixed leg gear 19, which will be described later).

Furthermore, a shed shaft 16 is disposed within the cylindrical shaft 5. The protruding upper end of this fixed foot shaft 16 is supported by a support 18 fixed on the ceiling &17 of the fuselage. At the same time, a disk-shaped solid foot gear 19 is fixed to the protruding lower end of the solid foot shaft 16. Note that bearings 20 and 20 are provided at the upper and lower ends of the inner wall of the cylindrical shaft body 5, respectively, so that the cylindrical IFllI body 5 is held firmly.
414 is formed so that it can rotate smoothly with respect to the Tsukuda J body 16.

In the hard gear 19, there is a record of irI [1 Goten Shame 1 body 11.
Ring-shaped planetary gears 21, each fixed to 11'.
21' are meshed with each other to connect the gearbox 4 to the gearbox 15-ge.
When the rotational shafts 11 and 11' rotate (revolution) by 140 rotations, the iLM gears 21 and 21' rotate along the fixed gear 19 while being engaged with the fixed gear 19, thereby rotating the fixed gear 19. The spindles 13 and 13' connected to the rotating shafts 11 and 11' rotate (rotate), and therefore the work 15 attached to the spindles 13 and 13'
15' is adapted to rotate around the axis of the spindles 13, 13'. Here, the planetary gear 21,
The number of gears 21' is greater than the number of gears of the fixed gear 19.

Note that the polishing tank 1t can be moved vertically by a suitable mechanism (not shown), so that it can be moved upwardly and downwardly from the polishing tank 1t shown in FIG. At the bottom, the lower parts of the spindles 13 and 13' and the workpiece 1
5° 15' becomes embedded in the media 2 in the polishing tank 1, and at the lower limit position of the polishing tank 1, the lower part of the spindles 13, 13' and the works 15, 15'
are taken out from the media 2, and the works 15 and 15'
can be attached and detached.

Next, a method for dry dual-speed flow polishing of a workpiece using the above-mentioned polishing machine will be explained.

First, the polishing tank 1 is moved to the lower limit position, and the polishing tank 117 is moved to the lower limit position.
Add dough media 2 to 1. In this case, organic media, especially wood media, such as fine powder of wood chips, small wood chips, corn, nuts, bark, etc., are excellent as media, and the amount of media input is 60% of the capacity of the polishing tank.
Approximately 90% is preferable. Next, an abrasive in the form of a liquid, paste, or powder made by mixing oil and fat with abrasive grains is added to the media 2 to cure the spindles 13 and 13'.
I 4.

Polishing 4111 with no workpiece attached to 14'
1 is moved to the upper limit position, and the motor connected to the goo V-6 is driven to rotate the pulley 6, thereby rotating the spindles 13 and 13' (revolution and rotation). This causes media 2 to flow, and media 2 and #
r distribution abrasive agent is mixed uniformly, and the abrasive agent adheres to the surface of the media 2. in this case.

It is preferable that the amount of abrasive added be 40 to 80 y to media l K9 at the beginning of the work, and then 0.2 to 1 y to media I kg for each abrasion work.
Further, 3 to 5 minutes is usually sufficient for mixing the media and the abrasive.

Next, after stopping the driving of the motor and moving the polishing tank 1 to the lowering limit position, the jig 14 of the spindles 13 and 13'
, JO the work 15 and 15' to 14'! V is attached, and the polishing tank 1 is moved to the upper limit position again (the state shown in FIG. 1). When the motor is driven in this state and the pulley 6 is rotated, the cylindrical shaft body 5 and gear box 4 rotate together with this rotation, and as a result, the rotating shaft bodies 11 and 11' attached to this gear box 4 rotate. , spindle 13
, 13' and the works 15, 15' rotate (revolution) around the central axis of the gearbox 4 (the axis of the solid foot shaft 16).
At the same time, along with this rotation (revolution), the rotating shaft body 11
, 11' rotate along the fixed leg gear 19 while meshing with it, thereby rotating the rotating shafts 11, 11' and the spindles 13, 1.
3' rotates, and the workpieces 15 and 15' attached to the spindles 13 and 13' rotate on their own spindles 13 and 1.
Rotate around the 3' axis. Further, the drive of the motor is switched between forward and reverse directions for each required time, thereby switching the above-mentioned rotation between forward and reverse directions for each required amount of time.

Therefore, the works 15 and 15' are connected to the central axis of the gearbox 4 (the axis of the fixed shaft body 16) and the spindle 13,
13' rotates forward and backward around the axis, and during these rotations, it comes into contact with the media that has been stirred into a fluid state by these rotations in a mixed state, and the surface is polished by the action of the abrasive agent on the media surface. It is.

After polishing, the motor is stopped, the polishing tank 1 is moved to the lower limit position, the polished workpiece is removed, new abrasive is added to the media, and the above-described operations are repeated.

In the present invention, in the above polishing method, the number of planetary gears 21 and 21' is larger than that of the fixed gear 19, and the revolution speed of the spindles 13 and 13' is made greater than the rotation speed, so that the workpiece 15 The rotational speed of gearbox 4 with respect to the central axis of 15' is
Relatively deep concave surface due to being thicker than the rotation speed relative to the 3' axis.

For example, for workpieces such as spoons and ladles that have a depth of 5 to 100 mm, especially 10 to 50 mm, the entire surface including the concave surface can be polished well without the inconvenience of leaving polishing residue on the concave surface. It's something you get. In this case, in order to effectively achieve the effects of the present invention, the gear ratio between the agreement gear 19 and the planetary gears 21 and 21' should be 1:
1.2 to 1:4, preferably 1:1.2 to 1:3,
In particular, it is preferable to set the ratio to 1:1.5 to 1:2.5, and the number of revolutions of the pulley 6, therefore the cylindrical shaft body 5, and the gearbox 4 (i.e., the number of revolutions of the spindles 13, 13') is 100. r, p, m.

Above, preferably 100 to 400 r, p, m, especially 1
It is preferable to set it as 50-350 r, p, m. Furthermore, it is preferable that the forward and reverse rotation be reversed once every 2 to 5 minutes, and it is also preferable that the forward and reverse rotation be performed once or twice during one polishing operation. 5 to 100 passes, especially the entire surface of a workpiece having 10 to 50 passes is usually 5 to 1
It can be polished well in about 0 minutes. Furthermore, according to the present invention, the drive energy ti only needs to be about 15 to 30 horsepower.

To explain in more detail the effects of the present invention described above, in conventional devices of this type, the fixed gear has more gears than the planetary gear, and the gear ratio is usually the former: latter = 5:1 to 7:1. However, when the shape of the workpiece has a relatively deep concave surface, the concave surface is not polished well, resulting in unpolished surfaces.

That is, in the conventional device, by increasing the number of gears of the same leg gears than the number of gears of the planetary gears, the rotation speed of the spindle is made higher than the revolution speed of the spindle. This method measures the uniformity of polishing on the workpiece by increasing the number of changes in the position of the workpiece (to be polished), but as mentioned above, for workpieces with relatively deep concave surfaces, polishing remains on the concave surface. It is something.

Furthermore, in the case of the conventional device, the driving energy, especially at the time of starting, is large, and a high horsepower motor is required.

On the other hand, according to the results of the studies conducted by the present inventors, the number of gears of the planetary gear is larger than that of the fixed gear, and in particular, the gear ratio is 1:1.
．． By setting i: 1.5 to 1:2.5, and setting the rotation speed of the spindle to be slower than the revolution speed, rather restricting the change in the posture of the workpiece, it is surprisingly possible to form a relatively deep concave surface. It has been confirmed that it is possible to uniformly polish the entire surface of a shouldered workpiece, including concave surfaces, and an experimental example is shown below.

That is, the workpiece has a head depth of 15a7, a major axis of 45mm,
Using a dessert spoon with a diameter of 35 mm, the spoon was fixed perpendicularly to the spindle with the spoon head facing down, and polished under the conditions shown in the table below for a total of 8 minutes, with a polishing time of 4 minutes for both stop and reverse. It is. In addition, as a media, there are approximately 3
Using a cone with a large bore diameter, an abrasive mixed with mixed oil and fat and alumina was introduced before the polishing operation, and the abrasive was coated on the media by pre-driving (approximately 80% of the media was introduced into the polishing tank 1001, Add 3Kg of abrasive and 7'C).

Note: The driving energy is 2 spindles and 30 workpieces (
This shows the number of motor horsepower that can be operated when 9 (Dessert Spoon) is installed.

The above Moe M results are shown in FIGS. 2 to 4. Note that in these figures, the shaded area is the polished part.

The shaded area indicates the unpolished area.

From these results, when the % fixed-planetary gear ratio is 7:1, only about 15 to 20% of the concave surface is polished (Figure 4), and 3:
In case 1, there was also a polishing residue on the bottom of the concave surface (Fig. 3), but
In the case of 1:2, the entire concave surface is well polished (No. 21
J) was recognized.

Therefore, as is clear from the above, according to the present invention, the polishing finish of the concave surface of the workpiece can be greatly improved compared to 9.
Moreover, driving energy can be reduced.

In addition, in the above-mentioned fluidized polishing method, the present invention coats the surface with oil and abrasive grains as polishing materials, and does not use a media, but coats a small amount of oil and abrasive grains on the fabric media for each cycle of polishing operation. Since the surface of the 97147 is coated with the abrasive agent during the preliminary operation, there is no need to coat the media with oil and abrasive grains in advance, as is the case with conventional methods, and the overall operation is simplified. This simplifies the nature. In this case, in the present invention, when coating the media with the abrasive, the spindle revolves and rotates to fluidize the media and mix the media and the abrasive uniformly and reliably.

Since the spindle thus promotes the action of applying the abrasive to the media, the media can be coated with the abrasive easily and in a short period of time (usually 3 to 5 minutes). Also, with the conventional method, the abrasive power of the media decreased! However, in the present invention, the media is coated with new abrasive every cycle (one polishing operation).
Good tolerance is always achieved. Furthermore, by employing such a method of the present invention, running costs are significantly reduced. In other words, in the present invention, is eco-cycling necessary? tI'IF4 agent sacrificial is 0.2 to media ih
It only requires 1 piece and is inexpensive in terms of cost.

When comparing this with the conventional method, the polishing tank is used at the initial stage of operation.
In the case of 4y, the average usage line for 60 times a day with 80Ky media is 1.92Kf, whereas the i! :40 to 7 polishing media are required per day, and when this is converted into price, the cost of the non-inventive method is drastically reduced by about 1/10 of that of the conventional method. This is the conventional law; 41] Fat in the media in advance,
It costs a lot of money to coat the abrasive grains, and there is a certain amount of oil and fat on the media surface.

Since only abrasive grains adhere to the media, it wears out relatively quickly and requires frequent replacement with new media.
This is because the present invention requires the use of a small amount of abrasive and eliminates the extra cost of coating the media with the abrasive.

In the present invention, the oils and fats constituting the abrasive include animal and vegetable mineral oils, various fatty acids, waxes, and soaps, and the abrasive grains include alumina, silica, iron oxide, chromium oxide, alundum, WA, calcium carbonate, etc. can be used.

Alternatively, a method may be adopted in which a media coated with oil and abrasive grains is used as the first media, and the abrasive is then introduced.

Furthermore, although two spindles are provided in the above-mentioned embodiment, the present invention is not limited to this, and other configurations can be modified in various ways within the scope of the gist of the present invention.

As described in detail above, according to the method of the present invention, the planetary gear meshing with the fixed gear is caused to revolve and rotate along the fixed gear, thereby causing the spindle connected to the planetary gear to revolve and rotate, and the spindle In the dry type A 5-speed IM, ν1 polishing method, in which a workpiece attached to the machine is rotated and fluidized with the media filled in the polishing tank 17J, an abrasive made by mixing oil and fat and abrasive grains with the media in the polishing tank. 710, mix the flow and IJ to coat the media surface with the abrasive, and then increase the number of gears of the floating gear to more than the number of gears of the fixed gear. Since the workpiece has a relatively deep concave surface, it is possible to uniformly polish the entire surface including the concave surface of the workpiece.Moreover, the driving energy can be reduced, and the polishing operation is simple, reducing running costs. Moreover, according to the polishing machine of the present invention, a workpiece having a concave surface as described above can be suitably polished.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIGS. 2 to 4 show a gear ratio of fixed gear and planetary gear of 1:2.
．． This is to explain the polished state of the concave portion of the dessert spoon in the case of 3:1 and 7:1, where A is a plan view and B is a vertical cross-sectional view. 1...v choma tank, 2...media, 18.18'.
...Spindle, 15.15'...Work, 19.
...Fixed gear, 21.21'...Planetary gear. Applicant Uemura Kogyo Co., Ltd. Agent Patent Attorney Takashi Kojima No. 1 Figure 308 Figure 2 A B Figure 3 A B Figure 4 A 8

Claims (1)

[Claims] 1. Planetary gears (21, 2) meshing with the fixed gear (19)
By making the spindle (13, 13') connected to the planetary gear (21, 21') revolve and rotate on its axis, the spindle ( In a dry high-speed fluid polishing method in which a workpiece (15, 15') attached to a polishing tank (13, 13') is rotated and fluidized with media (2) filled in a polishing tank (1), the polishing tank (1) Add an abrasive agent made of a mixture of oil and abrasive grains to the media (2) inside, mix fluidly, and coat the surface of the media (2) with the abrasive agent. A dry high-speed fluid polishing method characterized in that the workpiece (15, 15) is polished by making the number of gears larger than the number of gears of the fixed gear (19) so that the revolution speed is higher than the rotation speed.2. The method according to claim 1, wherein the fixed gear (19) and the planetary gear (21, 21) have a gear ratio of 1:1.2 to 1:3. 3. The degree of revolution is 10 Or, p, m. The method according to claim 1 or 2, which is as follows. 4. The amount of abrasive added is 19 media per polishing operation.
6.2 to 1. The method according to any one of claims 1 to 3. The planet 4'a (
The spindle (13°139) connected to the spindles 21 and 219 revolves and rotates, and the workpiece (15, 15') attached to the spindle (13, 13') K is rotated to perform polishing 411. (1) Media filled with internal pressure ( 2) A dry type high-speed fluidized sander that performs fluidized polishing in a dry type high-speed fluidized sander characterized in that the number of planetary gears (21, 21) is greater than the number of fixed gears (11). 6. Fixed Gear ratio of gear and planetary gear is 1:1.2~
The polishing machine according to claim 5, wherein the ratio is 1:3.