JPH0985607A - Surface finishing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform a surface finishing process by increasing the oscillation velocity of an oscillation bath. SOLUTION: Regarding the surface finishing method where an oscillation bath 1 houses working materials 41 and 42, and worked materials 40, and is oscillated at an approximately constant velocity except the oscillation end thereof for finishing the surface of the worked materials 40, the oscillation end of the oscillation bath 1 is stopped over a suitable time. Thus, a period required for reversing the housed materials 40 to 42 in an 8-shaped direction at the oscillation end can be maintained, under an increase in oscillation velocity for accelerating and flowing the housed materials 40 to 42 quickly at a position other than the oscillation end of the oscillation bath 1. An overall flow along the 8-shaped direction can be thereby provided at a high velocity to improve efficiency for surface finishing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various surface treatments such as mirror finishing and polishing of objects to be treated such as various containers, instruments and parts by using a rocking tank, and surface finishing such as surface cleaning thereof. The present invention relates to a surface finishing treatment method for performing.

[0002]

2. Description of the Related Art The applicant of the present invention first stores a liquid such as a cleaning liquid or a processing liquid, a granular material having a specific gravity equal to or higher than that, and an object to be processed in an oscillating tank which can be oscillated. A method is proposed in which the liquid, the granular material, and the object to be processed are made to flow in a figure-eight shape by rocking the moving tank at substantially the same speed except for the rocking end to finish the surface. According to this, even if a large amount of granular material is mixed in the liquid, the liquid and the granular material largely flow with complicated behavior due to the rocking of the rocking tank, and a large amount of granular material come close to each other and Since the fluid flows in a disturbed state, the granular material and the liquid frequently contact and collide with the object to be processed arranged therein, and the object to be processed can be efficiently surface-finished.

In order to reciprocally rock the rocking tank at a substantially constant speed, it is necessary to apply sudden braking at the rocking end to stop it and then perform rapid acceleration. Since there is a mechanical limit to the operation, the rocking tank is actually stopped at the rocking end for a predetermined time of, for example, about 0.1 sec.
There was no intentional downtime.

[0004]

By the way, as a method for more efficiently performing the surface finishing treatment, it is conceivable to increase the rocking speed of the rocking tank. Therefore, when the rocking speed is increased, the processing efficiency increases as the rocking speed increases when the rocking speed becomes slower. Does not flow in the shape of a figure, but is simply stirred,
There is a problem that the efficiency of the surface finishing treatment is rather lowered and the treatment efficiency cannot be sufficiently increased.

In view of such conventional problems, an object of the present invention is to provide a surface finishing treatment method capable of efficiently performing the surface finishing treatment by increasing the rocking speed of the rocking tank. .

[0006]

According to the surface finishing method of the present invention, a treatment material and an object to be treated are housed in a rocking tank, and the rocking tank is rocked at a substantially constant speed except for a rocking end. In the surface finishing method for finishing the surface of the object to be processed, the rocking tank is stopped at the rocking end for a suitable time longer than the mechanically required stop time between the sudden braking and the sudden acceleration. While increasing the moving speed to accelerate and flow the contents rapidly except near the rocking end of the rocking tank, the period required for the contents to be inverted into a figure 8 shape at the rocking end is secured. By doing so, the flow of the figure 8 shape is performed at a high speed to improve the efficiency of the surface finishing treatment. From the above action, the stop time of the rocking tank at the rocking end is 0.2 sec or longer, preferably about 0.2 to 0.5 sec, and particularly 0.3 to
It is preferably about 0.5 sec, and is set longer as the rocking speed increases.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the surface finishing method of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, reference numeral 1 is a rocking tank,
The side surface is formed in an octagonal shape, and both end walls 1a, 1b thereof are formed.
Mounting plates 2a and 2b to which support shafts 3a and 3b are vertically fixed are fixed to the central portion of the. The support shafts 3a, 3b are rotatably supported by bearings 4a, 4b provided on both sides of the upper end of the frame 5, whereby the rocking tub 1 is rockably supported around a constant horizontal axis.

One of the support shafts 3a projects through a pair of bearings 4a arranged in parallel, the gear 10 is fixed to the tip end of the support shaft 3a, and the drive shaft is arranged below the support shaft 3a at the lower part of the frame 5. The means 6 is configured so that it can be driven to rotate forward and backward. The driving means 6 is composed of a servomotor 7 and a speed reducer 8 capable of rotating in the forward and reverse directions, and a timing chain 11 is wound between a gear 9 fixed to the output shaft of the speed reducer 8 and the gear 10 to drive the same. The rocking tank 1 can be rocked by the means 6 at substantially constant speeds except the rocking end, and the rocking angle range and rocking speed can be arbitrarily selected. The servomotor 7 and the speed reducer 8 are installed on a motor base 12 that is configured to be positionally adjustable so that one side is pivotally supported by a shaft 13 so that tension can be applied to the timing chain 11.

At the lower end of the frame 5, moving wheels 14 and adjusting bolts 15 for installation are provided. FIG.
As shown by phantom lines, the outer surface of the frame 5 and the bearings 4a and 4b and the gears 10 and 11 except for the upper opening of the frame 5.
The driving parts such as the outer cover 16 are covered, and the swing tank 1
A safety cover 17 is provided to cover the upper opening of the frame 5 when the rocking drive is performed.

The rocking tank 1 has an opening 18 formed on one side surface out of the eight peripheral side surfaces, and is openably / closably closed by an opening / closing lid 19. The inner surface of the rocking tank 1 has a rubber lining 20 for enhancing wear resistance and absorbing shock and noise.
The rubber lining 20 extends to the outer surface of the opening 18. Further, irregularities (not shown) are formed on the inner surface of the rubber lining 20, and when the object to be treated is small, the object to be treated adheres to the inner surface of the rubber running 20 and the entire surface is not uniformly treated. Is being prevented. In this embodiment, a storage car 21 for individually holding the objects 40 to be processed is stored and arranged in the rocking tank 1, and a flange portion 22 connected to the upper end of the storage car 21 is opened. A storage car 21 is hung and supported so as to be freely taken out by being sandwiched between the outer surface of the portion 18 and the opening / closing lid 19. The opening / closing lid 19 is provided with a plurality of locking means 23 provided on both sides of the opening 18 so that the opening 18 can be opened.
Is configured to hold the closed state. Further, the opening / closing lid 19 is configured by mounting a wall body 25 provided with a rubber line on the inner surface of the frame body 24, and is configured to seal the opening portion 18.

The servomotor 7 is drive-controlled by a drive control means 31, as shown in FIG. The drive control means 31 receives a detection signal from an encoder 32 that detects the rotational position of the output shaft of the servomotor 7 or the support shaft 3a and a signal from a speed setting means 36 that can arbitrarily set the swing speed. Therefore, the servo motor 7 is drive-controlled so as to rotate at a constant swing speed at a set swing speed. Further, the detection signal from the encoder 32 is also input to a swing angle detection means 33 that detects the swing angle of the support shaft 3a, and the detected swing angle is input to a comparator 34, and a swing that can be set arbitrarily. Compared with the drive stop swing angle set by the dynamic angle setting means 35,
When the set drive stop swing angle is reached, drive control means 31
To output a signal.

Next, a treatment method for performing the surface finishing treatment of the object 40 to be treated by using the apparatus having the above constitution will be explained.

In the rocking tank 1, a treatment liquid 41 obtained by adding a surfactant to water or warm water as a treatment material and a granular body 42 of an appropriate shape made of ceramic or metal having a smooth surface are housed. The storage amount of the processing liquid 41 in the granular body 42 is
It is desirable to be in a range between a state in which the liquid surface is located near the upper end of the granular body layer and a state in which the depth of the treatment liquid on the granular body layer is half or less of the height of the granular body layer. The treatment liquid 41 may be water or warm water only, but it is desirable to add an appropriate amount of a surfactant.

Then, a plurality of objects 40 to be processed are accommodated and held in the accommodation car 21 in advance, and the accommodation car 21 is inserted and arranged in the rocking tank 1. At this time, if the rocking tank 1 is inserted while being rocked in the minute range by the driving means 8, even if a large amount of the granular bodies 42 are accommodated in the rocking tank 1, the rocking tank 1 can be easily inserted and arranged. Then, the opening / closing lid 19 is closed and the locking means 2
Closed at 3. Thus, the storage basket 21 in the rocking tank 1
It is possible to store a plurality of objects to be processed 40 in the rocking tank 1 without any fear of contacting each other simply by inserting.

Next, the rocking tank 1 is reciprocally rocked by the driving means 6 at a substantially constant speed within a predetermined rocking range. The rocking drive control of the rocking tank 1 at that time will be described with reference to FIGS. 3 and 4. The rocking tank 1 detects the rocking position of the support shaft 3a momentarily by the encoder 32, and the rocking tank 1 is set to the speed setting means 36. The servomotor 7 is driven and controlled by the drive control means 31 so as to swing at the constant speed V set in 1., and the swing angle detection means 33 detects the actual swing angle of the support shaft 3a. When the drive stop swing angle preset by the swing angle setting means 35 is reached, a signal is output from the comparator 34 to the drive control means 31 and the drive control means 31 stops the drive of the servo motor 7. At the same time, the built-in timer brakes for a predetermined time T, and then the servo motor 7 is started in the opposite direction. During that time, the rocking tank 1 is suddenly reduced in speed by being braked, and is stopped at the time (T-t) after braking,
Thereafter, the stopped state is maintained for t hours. After that, the predetermined time T of the timer expires, the servo motor 7 is started in the reverse direction as described above, and the drive is controlled again at the constant speed V. By repeating this operation, the rocking tank 1 reciprocally rocks at a substantially constant speed except for the rocking end.

The braking time T is automatically set by the rocking speed of the speed setting means 36. The set value is set so that t increases as the rocking speed increases, an appropriate value is experimentally obtained in advance and stored in the storage unit, and the T time is t of 0.2 sec. that's all,
It is preferably set to about 0.2 to 0.5 sec, and particularly preferably set to 0.3 to 0.5 sec. The time t may be longer than 0.5 sec if the processing time is ignored.

When the swing tank 1 is driven to swing as described above,
Even if a large amount of the granular bodies 42 are accommodated in the rocking tank 1, sliding layers of opposite directions are alternately formed at both ends of the rocking as the rocking tank 1 rocks. The liquid 41 largely flows in the shape of a figure in the oscillating plane, and the particles 42 and the processing liquid 41 flow along the surface of the object to be processed 40 held in the storage basket 21, Object 40
The surface finishing treatment is effectively performed. Furthermore, by stopping the rocking tub 1 at the rocking end for t time as described above, the rocking speed is increased so that the contents can be accelerated and flowed at a speed other than near the rocking end of the rocking tank 1. At the oscillating end, it is possible to secure the cycle required for the contents to be inverted into the figure 8 shape, and as a result, the figure 8 shape flow can be performed at high speed, resulting in high efficiency. Surface finishing treatment can be performed with. That is, while the rocking tub 1 is stopped at the rocking end for t hours, the contents return to the position at the time of the stop, so that the above-mentioned necessary period is obtained. However, it is not necessary to stop until the contents are completely returned to the position at the time of stop, and acceleration may be started after returning to the near side. Further, since the objects 40 to be processed are separately held in the storage basket 21, even if the rocking tank 1 rocks, there is no fear that the objects 40 to be processed 40 will be damaged due to contact or collision. .

The object to be processed 4 is caused by rocking the rocking tank 1 for a required time.
When the surface finishing treatment of No. 0 is completed, the swinging is stopped, the opening / closing lid 19 is opened, and the storage basket 21 is pulled up from the inside of the swinging tank 1, so that a plurality of objects 40 to be processed are batched together.
Can be taken from.

Also in this case, if the rocking tank 1 is rocked in a minute range, the storage car 21 can be easily pulled up. Furthermore, when performing surface finishing treatment continuously,
Storage basket 2 in which unprocessed object 40 is stored in advance
By inserting No. 1 into the rocking tank 1 and repeating the above operation, the surface finishing treatment of the object to be treated 40 can be performed very efficiently.

In the above embodiment, the processing liquid 41 in which water is mixed with the surfactant as the processing material and the ceramic granular body 42 are housed in the rocking tank 1, and the surface finishing treatment of the object 40 to be processed is carried out. Although an example is shown, polishing, mirror finishing, plating, other various surface treatments, cleaning, etc. can be applied to the surface finishing treatment. Also, the object to be processed 4
0 can also be applied to any shape and size of any material such as various metal materials, plastic, rubber, wood, stone, carbon and the like.

Further, the present invention can be applied not only to the moisture treatment method having the treatment liquid 41 but also to the dry treatment method. In addition, as a treatment liquid in the case of wet treatment, water or warm water alone may be mixed with a surfactant or other detergent as described above, and various cleaning polishing liquids and chemical polishing liquids may be mixed depending on the treatment. It may be selected and used as the treating material, and as the treating material, granular materials such as ceramics, glass, plastics, rubbers and metals, and various compounds can be used. In the case of dry processing, plastic, bamboo, walnut, corn core, cotton seed, leather, etc. may be selected and used according to the object to be treated, and a polish such as wax or gloss finish may be added. Can be used for

[0023]

According to the surface finishing method of the present invention,
As described above, a surface finishing process in which the processing material and the object to be processed are housed in the rocking tank, and the rocking tank is rocked at substantially the same speed except the rocking end to finish the surface of the object to be processed. In the method
By stopping the rocking tank at the rocking end for an appropriate period of time, the rocking speed is increased to accelerate and flow the contents other than near the rocking end of the rocking tank, while It is possible to secure the period required for reversing into a V shape, and as a result, the flow of a V shape as a whole can be performed at high speed to improve the efficiency of the surface finishing treatment.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of a surface finishing apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the surface finishing processing apparatus of the same embodiment.

FIG. 3 is a drive control block diagram of the servo motor of the embodiment.

FIG. 4 is a timing chart of the reciprocating swing operation of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rocking tank 6 Driving means 40 Object to be treated 41 Treatment liquid (treatment material) 42 Granular body (treatment material)

Claims (3)

[Claims] 1. A processing material and an object to be processed are housed in a rocking tank,
In the surface finishing method, in which the oscillating tank is oscillated at almost the same speed except the oscillating end to finish the surface of the object to be processed, mechanically required between the sudden braking and the sudden acceleration at the oscillating end. Surface finishing method, characterized in that the rocking bath is stopped for an appropriate time longer than the normal stop time. 2. The stop time at the swing end is 0.2 sec.
It is above, The surface finishing method of Claim 1 characterized by the above-mentioned. 3. The stop time at the swing end is 0.2 to 0.
The surface finishing method according to claim 2, wherein the surface finishing treatment is performed for 5 seconds.