JP2006142475A - Vibrotumbling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibrotumbling device capable of processing such an inner surface even if it is the narrow surface including a narrow width groove, a hollow part, a housing, and holes. <P>SOLUTION: The vibrotumbling device (10) is especially used for processing the inner surface of the manufactured products (18) by an abrasive mixture. The vibrotumbling device (10) is equipped with various elements of the abrasive mixture to perform surface treatment of the manufactured products (18), and a vibration means to generate the relative motion to the manufactured products (18). The vibration means is connected with the manufactured products (18) in order to directly vibrate the manufactured products (18) and perform the surface treatment of the manufactured products (18) thereby. The vibrotumbling device (10) is equipped with a pressure means to obtain a forced flow especially in the inner side of at least one hollow part of manufactured products (18) for obtaining the forced flow of the abrasive mixture with regard to the manufactured products (18). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vibration tumbling device, and more particularly to a vibration tumbling device applicable to processing a manufactured product having at least one cavity or inner surface.

  The vibration tumbling process is a typical economical method among the methods of removing the surface layer in the case of an article having at least one surface, obtained by an electroerosion technique.

  Surface layers that are substantially hard and brittle, or have such microstructural and morphological characteristics that are unacceptable for certain applications, are actually obtained by electroerosion.

  An example of such a manufactured product is in particular an article having at least one cavity, such as a rotor.

  Since the manufactured product to be treated is immersed in the abrasive mixture, the treatment of the outer surface by vibration tumbling is simple and economical.

  The manufactured product is held in a container, and the container itself is vibrated by vibration means.

  Usually, the abrasive mixture comprises various elements, commonly known as “media” in English, usually made of a material that is not particularly hard, abrasive particles, water, and additives.

  The function of the various material elements, i.e. the media, is to transfer kinetic energy to the abrasive particles so that the abrasive particles impinge on the manufactured product to be treated.

  Each media element is surrounded by abrasive particles present in the abrasive mixture and receives vibration from the vibrating means through the container.

  In this way, the various elements of the abrasive mixture impinge on the outer surface of the manufactured product to be treated and rub the abrasive particles to the surface.

  The abrasive particles rub against the surface to remove material from the outer surface of the manufactured product, so that the surface layer is polished and the material is removed therefrom.

  Thus, in the case of vibratory tumbling devices or vibratory finishing devices using abrasive mixtures currently on the market, the device is given a vibratory motion which is then to be treated, i.e. smoothing the surface. Communicated to the manufactured product to be done.

  In other words, the manufactured product is completely immersed in the abrasive mixture and vibrations are transmitted through the abrasive mixture to the manufactured product to be processed. The abrasive mixture is held in a container that is subjected to vibration.

  The vibration is transmitted from the container to the abrasive mixture and consequently to the manufactured product.

  The relative movement of the abrasive mixture with respect to the surface of the product to be treated is generated only by vibrations induced against the abrasive mixture by the vibration means.

  Thus, one of the disadvantages of current devices is that the abrasive mixture stays in the grooves, openings, internal cavities and narrow fin portions, and in such parts, the above mentioned Relative motion is reduced or never occurs.

  Current equipment cannot efficiently generate relative motion between the abrasive mixture and, in many cases, the inner surface of the product to be processed that is difficult to reach. Such an inner surface cannot be processed efficiently.

  As a result, the polishing action of the abrasive mixture makes it impossible to treat the inner surface, and in many cases it is necessary to obtain a product by different techniques. Usually, the use of such a technique results in high operating costs and low quality after finishing.

  Even when vibration erosion devices can be used, especially to treat inner surfaces such as grooves and surfaces with narrow cavities including narrow portions, such as certain rotors Not effective.

  In this case, the polishing means reaches the inner surface without vibration energy. In a more unfavorable situation, the polishing means remains in the groove or cavity.

  In any case, it is impossible to obtain an efficient polishing action by the abrasive mixture on the inner surface where the abrasive is supplied through a fairly narrow and narrow portion having a minimum cross-sectional width of 5 mm to 10 mm. .

  Another disadvantage is that for the wider part, the polishing of the surface proximate to the outer part of the product to be treated is not uniform.

  This is because changes in direction and speed increase the frequency and strength of impact of the abrasive mixture elements on the product.

  An object of the present invention is to provide a vibration tumbling device capable of processing such an inner surface even if it is a surface including a narrow and narrow groove, a cavity, a housing and a hole.

  Another object of the present invention is to produce a vibrating tumbling device capable of uniformly removing material from at least one inner surface of a manufactured product having at least one cavity or indentation to be treated.

  Another object of the present invention is to provide a vibration tumbling device capable of efficiently and uniformly treating both inner and outer surfaces.

  Still another object of the present invention is to provide a vibration tumbling device that is simple and excellent in economic efficiency.

  According to the invention, these objects are achieved by producing a vibration tumbling device as specified in claim 1.

  Other features of the invention are set out in claims 2-12.

  The features and advantages of the vibration tumbling device according to the invention will become more apparent from the following description of non-limiting embodiments with reference to the accompanying drawings.

  Referring to the drawings, the drawings show vibration tumbling of a manufactured product 18 such as, for example, a rotor, by an abrasive mixture comprising various elements made of a material that is not particularly hard, abrasive particles, water, and additives. The apparatus 10 which performs is shown.

  The apparatus 10 includes vibration means for generating relative movement between the abrasive mixture and the manufactured product 18 in order to perform processing of the manufactured product 18.

  Vibrating means are associated with the manufactured product 18 in order to directly vibrate the manufactured product 18 and perform processing of the manufactured product 18.

  The vibration means is preferably linked to the manufactured product 18 by a rod 20. Alternatively, the vibration means is directly coupled to the manufactured product.

  The vibratory tumbling apparatus 10 further comprises pressure means for obtaining a forced flow of the abrasive mixture with respect to the manufactured product 18, in particular for obtaining a forced flow inside at least one cavity of the manufactured product 18.

  In order to uniformly remove the material from the manufactured product 18, the pressure means may force a relative flow of a portion of the abrasive mixture that is proximate to the manufactured product 18 with respect to the manufactured product 18. In addition, it preferably includes a column of abrasive mixture disposed above the manufactured product 18.

  At the same time, a commercially available abrasive mixture (medium, abrasive product, water, additive) is supplied to the rotor 18 by the rubber collector 62 shown in FIG. The rubber collector 62 receives the abrasive mixture from a feed conduit 61 connected to a tank 60 suspended about 1,000 mm above.

  According to a preferred embodiment, the vibration tumbling device 10 preferably comprises a frame 12. The rod 20 is constrained to the frame 12 by elastic means 40 such as a series of springs.

  The rod 20 is preferably constrained to the frame 12 by a series of vertical guides 45 at the first end, ie, the upper end 21, and suspended from the frame 12 by elastic means 40. With this configuration, the rod 20 can move relative to the frame 12 in the vertical direction.

  The vertical rod 20 further includes a lower end portion 22 to which the rotor 18 is fastened and fixed. The upper end 21 of the rod 20 is particularly coupled to vibration means such as a non-equilibrium motor 30 that transmits vibration to the rod 20.

  The motor 30 is preferably disposed above the frame 12 and is preferably constrained to the upper end 21 of the rod 20 by a disc 24 integral with the rod 20.

  Thus, the vibration means are directly linked to the manufactured product 18 to be processed and can therefore transmit the vibration to the product without any damping of the vibration.

  The vibratory tumbling apparatus 10 preferably comprises a rubber collector 62 for conveying the abrasive mixture into or onto at least one cavity of the manufactured product 18.

  The pressure means preferably includes a tank 60 and a feed conduit 61. The feed conduit 61 has a first end and a second end, and the first end is downstream of the tank 60 for flowing the abrasive mixture toward the manufactured product 18. Arranged and the second end is located upstream of the manufactured product 18.

  The tank 60 is disposed above the feed conduit 61. A rubber collector 62 is coupled below the feed conduit 61 to convey the abrasive mixture into at least one cavity of the manufactured product 18.

  The second end of the feed conduit 61 is preferably coupled to the upstream side of the rubber collector 62 for flowing the abrasive mixture toward the manufactured product 18.

  The tank 60 is about 1 of the manufactured product 18 so that the weight of the abrasive mixture column placed in the feed conduit 61 applies pressure to a portion of the abrasive mixture in contact with or close to the manufactured product 18. It is preferably suspended upwards of 000 mm.

  In this manner, the abrasive mixture is forced to flow with respect to the manufactured product 18, thereby uniformly removing material from the surface of the product.

  The vibration tumbling device 10 preferably includes a basin-shaped container 63 constrained by a manufactured product. The basin-shaped container 63 surrounds the manufactured product so that both the inner and outer surfaces of the manufactured product can be processed simultaneously.

  After flowing through the at least one cavity of the rotor 18, the abrasive mixture is collected in the basin-shaped container 63 so that the abrasive mixture also treats the outer surface of the manufactured product 18.

  This process is repeated until the maximum liquid level of the basin-shaped container 63 is reached, after which the abrasive mixture overflows from the basin-shaped container and is collected in a container 64 constrained by the frame 12.

  The vibration tumbling apparatus 10 preferably includes a container 64 that collects the abrasive mixture that overflows from the basin-shaped container 63.

  The used abrasive mixture recovered in the container 64 is washed and mixed with fresh abrasive. Thereafter, it is returned to the upper tank 60.

  Operations as described above may be performed by manual operating means, or may be performed by automatic means to achieve a continuous operating cycle.

According to the present invention, the polishing apparatus 10 has the following novel features.
The device transmits vibrations directly to the manufactured product to be treated, not through the abrasive mixture;
The fluid is forced to flow relative to the manufactured product to be treated, in particular with respect to the inner surface, eg, narrow, narrow cavities, holes or grooves.

  By directly vibrating the object to be treated, a relative movement can be generated between the inner surface to be treated having a very narrow portion and the flow of the abrasive mixture. The abrasive mixture is forced to flow inside at least one internal cavity, thus smoothing the surface of the cavity and in any case capable of removing material uniformly from the cavity Is realized.

  The abrasive mixture is forced by the pressure means to flow inside at least one inner surface, thereby enhancing the relative motion of the abrasive particles dispersed in the mixture and the internal cavities to be treated. .

  As a result, the abrasive particles impinge on at least one inner surface to be treated and generate a polishing effect on that surface itself.

  By using pressure means to force the abrasive mixture to flow toward at least one inner surface to be treated, the abrasive mixture stays inside the holes and cavities of the rotor and other components. This is advantageous because it can be prevented and the eroded material can be discharged.

  The vibratory tumbling device of the present invention is advantageous because it can be polished very efficiently, especially on inner surfaces that are difficult to reach or process, such as grooves, cavities and holes.

  Accordingly, it can be seen that the vibration tumbling device according to the present invention achieves the previously specified purpose.

  The vibration tumbling device of the present invention considered as described above can be modified and modified in many ways included in the same inventive concept.

  Furthermore, in practice, the materials used, as well as the dimensions and components, may be varied according to technical requirements.

1 is a right side perspective view of a preferred embodiment of a vibration tumbling device according to the present invention. It is a partial cross-section schematic start-up view of the vibration tumbling device of FIG. It is the figure which showed the detail of FIG. It is the figure which showed the detail of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vibration tumbling apparatus, 12 ... Frame, 18 ... Rotor (manufactured product), 20 ... Rod, 24 ... Disc, 30 ... Non-equilibrium motor, 40 ... Elastic means, 45 ... Vertical guide, 60 ... Tank, 61 ... Feed conduit, 62 ... rubber collector, 63 ... ladle-shaped container, 64 ... container

Claims (12)

Particularly used for treating the inner surface of the manufactured product (18) by means of an abrasive mixture comprising several elements of a particularly non-hard material, abrasive particles, water and additives, said production In a vibration tumbling device (10) comprising vibration means for generating a relative movement between the abrasive mixture and the manufactured product (18) in order to perform surface treatment of the finished product (18), the manufactured product In order to directly vibrate the product (18) and thereby perform a surface treatment of the manufactured product (18), the vibration means is associated with the manufactured product (18) and the vibration tumbling The apparatus (10) obtains a forced flow of the abrasive mixture with respect to the manufactured product (18), in particular a forced flow within at least one cavity of the manufactured product (18). Vibrotumbling device and in that comprises a pressure means because (10). The vibration tumbling device (10) according to claim 1, wherein the vibration means is linked to the manufactured product (18) by a rod (20). The vibration tumbling device (10) according to claim 1, wherein the vibration means is directly restrained by the manufactured product (18). 4. The vibration tumbling device (10) according to any one of claims 1 to 3, wherein the vibration means comprises a non-equilibrium motor (30). The pressure means comprises a basin-shaped container (60) and a feed conduit (61), the feed conduit (61) comprises a first end and a second end, the manufacture In order to flow the abrasive mixture towards the finished product (18), the first end is coupled to the downstream side of the basin-shaped container (60) and the second end is connected to the manufactured product. 5. The vibration tumbling device (10) according to any one of claims 1 to 4, characterized in that it is coupled upstream of the product (18). In order to remove material uniformly from the manufactured product (18), the pressure means is in relation to the manufactured product (18) a portion of the abrasive mixture in proximity to the manufactured product (18). 6. An abrasive mixture column disposed above the manufactured product (18) so as to force a relative flow. Vibration tumbling device (10). The vibration tumbling device (10) according to any one of claims 1 to 6, further comprising a frame (12) to which the rod (20) is mounted by means of an elastic device (40). 8. A rubber collector (62) for feeding the abrasive mixture into the at least one cavity of the manufactured product (18). Vibration tumbling device (10). The second end of the feed conduit (61) is coupled upstream of the rubber collector (62) for flowing the abrasive mixture toward the manufactured product (18). The vibration tumbling device (10) according to claim 8. The basin-shaped container (63) is provided with a basin-shaped container (63) fixed to the manufactured product, and the basin-shaped container (63) is configured so that the inner surface and the outer surface of the manufactured product (18) can be simultaneously processed. The vibration tumbling device (10) according to any one of claims 1 to 8, characterized by surrounding 18). The vibration tumbling device (10) according to any one of claims 1 to 9, further comprising a container (64) for recovering the abrasive mixture. A vibration tumbling device for the purposes specified below, as described and illustrated below.