JP2006500246A - Article manufacturing apparatus and method - Google Patents

Abstract

A potter's wheel which forms an elliptical container such as a plate or a ball has a die (26) for positioning the clay to be formed and a revolution / spinning drive device (24). The revolution / spinning drive device (24) provides die revolution centered on the first axis and die rotation centered on the second axis. The tool is held at a predetermined position with respect to the first axis. The rotation direction is the same as the revolution direction, and the rotation speed is half of the revolution speed.

Description

  The present invention relates to an apparatus for manufacturing an elliptical article and a method thereof.

  A typical example of an oval article is an oval pottery. Conventionally, an injection molding method (slip casting) and a press molding method are used to form such an elliptical earthenware. The injection molding method is a method in which a plurality of molds are combined to form a cavity that coincides with an elliptical container, and slurry is poured into the cavity. However, according to such a forming method, there is a problem that the density of the slurry is lowered and it is impossible to form high-quality ceramics. In the press molding method, a die (die) and a press punch are used, and a die having a shape below (or above) an elliptical container is formed in the die, and a press punch that descends from above is used as the press punch. Forming a mold having a shape above (or below) the container. At the time of press molding, even if the density of the clay was increased to some extent, the quality was inferior to that of a container (circular container) manufactured with a rotating pot. In addition, a round shaped mold can be used to produce a circular container, and by applying pressure to the clay in the circumferential direction and arranging the clay particles, there are many things such as increasing the strength of the container and reducing deformation. There are advantages. However, it is difficult to produce an elliptical container instead of a perfect circle, depending on the conventional pottery molding means that can only form a perfect circular article, such as a potter's wheel, a forming potter's wheel, and an automatic molding machine. It was.

  An object of the present invention is to provide an apparatus and a method for manufacturing an elliptical article with a tool that is formed or processed while rotating a workpiece.

  It is another object of the present invention to provide a forming wheel for forming an elliptical pottery.

  Another object of the present invention is to provide an apparatus for manufacturing an article having an elliptical shape that can change the eccentricity of the article to be manufactured (how much it is shifted from a circle to an ellipse).

  Another object of the present invention is to provide an apparatus for manufacturing an ellipse that can change the size of the ellipse of the ellipse.

  It is another object of the present invention to provide an article manufacturing apparatus that can manufacture regular circular articles of various sizes.

  Furthermore, it is another object to provide a molding roller for molding and a method and apparatus for molding an article using the molding roller.

  In order to achieve the above object, an apparatus for manufacturing an elliptical article according to the present invention is an apparatus for manufacturing an article having an elliptical shape by forming or processing a workpiece by relative movement of the workpiece and a tool. A workpiece support for mounting the workpiece, a revolution drive for revolving the workpiece support around the first axis, and the workpiece support around a second axis parallel to the first axis. A revolving / spinning drive device having a rotation drive device that rotates the tool, and a tool base that supports the tool and positions the tool at a fixed position with respect to the first axis. The revolution / spinning drive device maintains the revolution direction and the rotation direction of the workpiece support tool the same, and maintains the revolution speed and the rotation speed at 2: 1.

  In one embodiment of the present invention, the rotation driving machine of the revolution / spinning drive device is connected to a workpiece support tool, which is positioned on the fixed revolution center axis located on the first axis, and located on the second axis. A rotation center axis that is rotated, a rotation axis that is parallel to the rotation center axis and the rotation center axis, a first link that connects the rotation center axis to the rotation axis, and a second link that connects the rotation axis to the rotation center axis A link, a pair of gears fixedly engaged with the revolution center shaft and the intermediate shaft, and a pair of gears fixedly engaged with the intermediate shaft and the rotation central shaft. The revolution driving machine includes a drum that covers the rotation driving mechanism and rotates around a first axis, and a connecting rod that connects the inside of the drum and the rotation center shaft.

  In another embodiment of the present invention, the revolution drive machine includes a drum that surrounds the rotation drive machine and rotates about a first axis, and extends radially across the interior of the drum, the first axis A linear movement mechanism passing through the second axis, and the distance between the rotation center axis and the revolution center axis can be adjusted. The linear movement mechanism includes a support block fixed inside the drum, a feed block connected to the rotation center shaft, a lead screw extending between the support blocks through the feed block, and the lead screw. And a guide rod that is extended side by side and fixed to the support block through the feed block.

  In another embodiment of the present invention, the revolution drive machine includes a drive shaft that is rotatably mounted inside the fixed revolution center shaft, and a drive link that connects the drive shaft to the rotation center shaft. You may prepare. In another embodiment of the present invention, the revolution driving machine may include a revolution motor for revolution driving, and the rotation driving machine may include a rotation motor for rotation driving.

  The apparatus for manufacturing an article having an elliptical shape is an apparatus for manufacturing an elliptical container. At this time, the workpiece support may be a mold having a shape that matches the shape of a part of the oval container. The tool may be a shaping roller or a shaping scoop (pallet).

  Moreover, in embodiment, the manufacturing apparatus of an elliptical article can process a timber or a metal, and the said tool is a cutter which processes the said timber or a metal at this time.

  A method of manufacturing an elliptical article according to another aspect of the present invention is a method of manufacturing an article having an elliptical shape at least in part, the step of mounting a workpiece to be molded or processed on a workpiece support, Revolving the workpiece support about the first axis and rotating the workpiece support about the second axis; and positioning the tool at a fixed distance from the first axis. It is characterized by that.

  Furthermore, the method for manufacturing an elliptical article according to an embodiment of the present invention further includes a step of adjusting a distance between the first axis and the second axis. The method further includes adjusting a distance between the first axis and the tool.

  A method for manufacturing an elliptical article according to still another aspect of the present invention is a method of manufacturing a circular or elliptical article by processing a workpiece of a moldable material such as clay with a molding wheel, A step of mounting a formable workpiece on the mold, a step of rotating the mold around the rotation axis, and a molding roller that rotates about a rotation axis different from the rotation axis of the mold is the rotation axis of the mold And a step of positioning at a certain distance from the step.

  A shaping wheel according to still another aspect of the present invention is a shaping wheel that is manufactured by processing a workpiece of a moldable material such as clay to form a circular or elliptical article. The apparatus includes: a mold on which an object is mounted; a drive device that rotationally drives the mold around a rotation axis; and a molding roller that rotates around a rotation axis different from the rotation axis of the mold.

  A forming roller according to still another aspect of the present invention is a forming roller that is mounted on a forming wheel and forms a workpiece of a moldable material such as clay, and is fixed to the rotating shaft and the rotating shaft. And a cylindrical body having a circumferential surface in contact with the workpiece.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can have a clear understanding of the objects and features of the present invention. explain.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an oval container formed by a forming wheel according to the first embodiment of the present invention. As an example, the oval container 10 is an oval dish having a long leg Da that is approximately twice the short diameter Db, a side edge 12 having a low height, a thin thickness t, and a low foot 14. The hatched portion in FIG. 1 shows a cross section of the container. Since the oval container 10 formed by the forming wheel is shrunk in the subsequent drying, unglazed baking and main baking processes, it is formed slightly larger than the final product.

  FIG. 2 is a schematic view showing a forming wheel 20 of the elliptical article manufacturing apparatus according to the first embodiment of the present invention. The forming wheel 20 includes a frame 22 (support), a revolution / spinning drive device 24, a mold 26, and a tool table 28. The frame 22 includes a base frame 30 made of a steel material, and a support lid 32 that covers the base frame 30 and has rigidity sufficient to support the rotation of a drum described later. In FIG. 2, the support lid 32 is shown in cross section. The base frame 30 is provided with a drive motor 34 that transmits a driving force, but is not limited thereto. The drive motor 34 is provided with, for example, a reduction gear (or a transmission gear or the like), and has a motor shaft 36 and a belt pulley 38 provided at the tip thereof.

  The revolution / spinning drive device 24 receives the driving force of a motor 36, which will be described later, and transmits power so that the mold 26 rotates and spins. On the mold 26, clay to be molded, which is a workpiece, is placed, and after molding, the oval container 10 is molded. In FIG. 2, the mold 26 is shown in cross section, and the oval vessel 10 being a workpiece placed thereon is also shown in cross section. Further, the forming wheel 20 has a tool base 28. The tool base 28 includes a lever support base 42 fixed to the base frame 30, a rotation lever 44 pivotally attached to the lever support base 42, and a forming roller 46 that is a tool attached below the rotation lever 44. And have.

  The molding roller 46 is attached so as to be rotatable about its central axis. The rotation axis of the forming roller is preferably attached so as to pass through the revolution center axis of the revolution / spinning drive device 24. A roller drive motor 47 is attached to the lever 46 extended through a pivot point, and the shaft of the roller drive motor is connected to the shaft of the shaping roller 46 to rotate the molding roller 46. In actual work, when the tip handle 48 of the lever 44 is picked and lowered, the roller 46 is rotated and the workpiece is molded while pressing the clay. If the roller is rotated at a speed several times faster than the rotation of the mold by a driving device connected to the central shaft of the roller, the effect of smoothing the surface of the container and making the clay particle arrangement more uniform and dense can get.

  2 to 5, the revolution / spinning drive device 24 includes a revolution drive unit, a rotation drive unit, and a linear movement device. In the illustrated embodiment, as will be described later, the linear movement device also functions as a part of the revolution drive unit. The revolution drive unit has a drum 50. The drum 50 is connected to the pulley 38 by a belt 52, and the power of the motor 34 is transmitted to rotate. At this time, the drum 50 is rotatably supported by an upper support bearing 54 provided on the support lid 32. A lower support bearing 56 is provided between the drum and a fixed shaft, which will be described later, and is rotatably supported (see FIG. 4).

  As shown in FIGS. 3 to 5, the rotation driving unit rotates the die 26 connected to the die shaft using a link and a gear between the three shafts. The revolution / spinning drive device 24 has a fixed shaft 58 that functions as a revolution center axis, is connected to each other by a link, and is parallel to each other, an intermediate shaft 60, and a mold shaft 62 that functions as a rotation center axis. The fixed shaft 58 is fixed to the frame 30 and is located on the rotation center line of the drum 50. The mold shaft 62 is coupled with the mold 26, revolves around the fixed shaft 58, and rotates by itself. The fixed shaft 58 and the intermediate shaft 60 are connected by a first link 64. Although not shown in detail, bearings are interposed between the first link 64 and the fixed shaft 58 and between the first link 64 and the intermediate shaft 60. Further, the intermediate shaft 60 and the mold shaft 62 are also connected by the second link 66. Although not shown in detail, bearings are interposed between the second link 66 and the mold shaft 62 and between the second link 66 and the intermediate shaft 60. The second link 66 is located above the first link 64. In this embodiment, the two links 64 and 66 are described as having the same length, but the present invention is not limited to this.

  Next, referring to FIGS. 3 to 5, a fixed gear 68 is fixed to the fixed shaft 58. A first intermediate gear 70 that meshes with the fixed gear 68 is fixed to the intermediate shaft 60. Further, a second intermediate gear 72 is fixed to the upper portion of the first intermediate gear 70 on the intermediate shaft 60. The second intermediate gear 72 is meshed with a rotation gear fixed to the mold shaft 62, that is, a mold gear 74.

  In the embodiment shown in FIGS. 3 to 5, the first media link 64 and the second media link 66 have the same link length. That is, the distance between the fixed shaft 58 and the intermediate shaft 60 is equal to the distance between the intermediate shaft 60 and the mold shaft 62. In this embodiment, the ratio of the diameters of the pitch circles of the first intermediate gear, the second intermediate gear, and the mold gear of the fixed gear is 1.5: 1.5: 1.2. However, the present invention is not limited to this, and the ratio of the length of the links 70 and 72 and the diameter of the pitch circle of each gear can be made different. While the mold shaft 62 revolves twice with respect to the fixed shaft 58, any combination of gear pitch circle ratios can be used as long as the mold shaft 62 rotates once.

  The revolution / spinning drive device 24 includes a linear movement device 76 that linearly moves the mold shaft 62 in a direction in which the mold shaft 62 approaches or moves away from the fixed shaft 58. The linear moving device 76 includes support blocks 78 that are disposed at both ends of the drum 50 in the diametrical direction and are fixed. A feed block 80 is located between the two support blocks 78. A die shaft 62 is extended to the feed block 80 and is rotatably coupled with a bearing interposed therebetween. A lead screw 82 extends from one support block 78, passes through the feed block 80, and extends to the other support block 78. One end of the lead screw 82 protrudes through the support block 78, and a dial 84 that can be turned by hand is coupled to the end. The lead screw 82 is rotatably supported by a support block 78. The lead screw 82 interacts with a feed nut (not shown) provided in the feed block 80 to move the feed block 80 linearly when the dial 84 is rotated. In this embodiment, a lead screw is used for linear movement of the feed block 90, but the configuration of the linear movement mechanism is not limited to this. A guide rod 86 is juxtaposed on both of the feed screws 82. The guide rod 86 is fixed to the support blocks 78 on both sides and extended through the feed block 80. The linear movement of the feed block 80 is guided by the guide rod 86. In addition, since such a linear moving device 76 is fixed to the drum 50 and coupled to the mold shaft 62, it also functions as a revolving drive link that transmits the rotation of the drum 50 to the mold shaft 62 and revolves the mold shaft 62. To do.

  Next, with reference to FIG. 3 thru | or FIG. 5, the effect | action which the mold axis | shaft 62 revolves and rotates is demonstrated. First, the drum 50 to which power is transmitted from the motor 34 via the belt 52 rotates around the fixed shaft 58. The drum 50 according to this embodiment is described as rotating in the clockwise direction as shown by the arrow in FIG. 3, but the present invention is not limited to this. The rotation of the drum 50 rotates the entire linear moving device 76, and revolves the mold shaft 62 and the intermediate shaft 60 connected by the link around the fixed shaft 58. At this time, the first intermediate gear 70 meshes with the fixed gear 68 and revolves, and itself rotates with respect to the center line of the intermediate shaft 60. This rotation is transmitted to the intermediate shaft 60, and this is transmitted to the mold gear 74 via the second intermediate gear 72.

  At this time, the rotation direction of the mold shaft 62 is equal to the revolution direction, and the magnitude of the rotation speed is ½ of the magnitude of the revolution speed. This will be explained in detail. Generally, when a rotation axis that is a certain distance from a certain center line revolves clockwise with respect to the center line, there is no medium between the rotation axis and the center line. Assuming that, one revolution in the clockwise direction is performed during one revolution. However, in this embodiment, a fixed gear 68, medium gears 70 and 72, and a medium of a mold gear 74 are provided between the fixed shaft 58 and the mold shaft 62, which is a rotating shaft. Power that rotates the gear 74 in the counterclockwise direction at a speed that is half the revolution speed is generated and transmitted to the mold shaft. Therefore, the actual rotation speed of the mold axis is reduced to 1/2. That is, the mold axis is rotated in the same direction as the revolution direction at a speed that is half the revolution speed.

  Next, referring to FIGS. 6a to 6e, as described above, the direction is the same between revolution and rotation, the speed is a ratio of 2: 1, the tool is fixed, and the workpiece is caused to move. The process of forming an ellipse on the workpiece will be described. 6a to 6e show a process of performing one revolution. 6a to 6e, P is the position of the mold axis, T is the position of the fixed axis, and S is one point of the tool. The point S in FIG. 6a indicates the end point of the major axis of the ellipse to be molded. In FIG. 6a, a point R indicates the end point of the minor axis of the ellipse formed by the S point. 6a to 6e, TS indicates the distance between the T point and the S point, and L indicates the distance between the mold axis and the center line of the drive shaft (that is, the distance between the P point and the T point). ), And the circle indicates the revolution trajectory of the mold axis. In FIGS. 6a to 6e, the ellipse to be formed is represented by a dotted line, and the ellipse actually generated by passing the workpiece through S which is one point on the tool is represented by a solid line. 6b and 6c are for comparing the positions of the ellipses in the absence of the gears 68, 70, 72, 74 in this embodiment. There is no direct relationship with.

  FIG. 6a is an example of the start position, and in this example, shows a state where the tool S, the revolution center T, and the mold axis center P are located on the same straight line. At this time, the distance PS between the die axis center and the tool, that is, the sum of TS and L is half of the major axis Da of the ellipse to be formed. The difference between TS and L is half of the minor axis Db of the ellipse to be molded. The major axis of the ellipse coincides with PS, and the minor axis is perpendicular to this.

  FIG. 6 b shows a state in which the mold axis revolves 90 ° on the revolution track. At this time, the workpiece is rotated by 45 °. Therefore, the major axis and the minor axis of the ellipse to be formed meet the line segment TS between the revolution center axis and the tool at 45 °. While reaching the position as shown in FIG. 6b, an ellipse only represented by a solid line is formed.

  FIG. 6 c shows a state in which the mold axis revolves 180 ° on the revolution track. At this time, the workpiece is rotated 90 °. Therefore, the major axis of the ellipse to be molded is orthogonal to the line segment TS between the revolution center axis and the tool, and coincides with the minor axis. While reaching the position as shown in FIG. 6c, an ellipse only represented by a solid line is formed.

  FIG. 6d shows a state in which the mold axis revolves at an arbitrary angle of 180 ° or more and 360 ° or less on the revolution track. At this time, the workpiece is in a state of rotating about ½ of its revolution angle. While reaching the position as shown in FIG. 6d, an ellipse only represented by a solid line is formed.

  FIG. 6e shows a state in which the mold axis revolves 360 ° on the revolution track. At this time, the workpiece is rotated by 180 °. Therefore, the major axis of the ellipse to be formed coincides with the line segment TS between the revolution center axis and the tool, and is orthogonal to the minor axis. While reaching the position as shown in FIG. 6e, only the half line of the ellipse is formed, i.e. half of the ellipse.

  When the state shown in FIGS. 6a to 6e is repeated for another revolution, the remaining half of the ellipse is formed. In this way, the workpiece is caused to rotate and rotate, so that the ratio of the rotation speed (revolution number) and the rotation speed (revolution number) is 2: 1, and the position away from the revolution center T by a certain distance. If the S point is placed at the point, the point on the workpiece that passes through the S point will draw an ellipse locus, and the ellipse can be formed.

  Next, a method for changing the ratio of the major axis to the minor axis in an ellipse will be described with reference to FIGS. 7a to 7c. In FIG. 5, this is possible by changing the distance formed by the center of the mold shaft 62 and the center of the fixed shaft 58 by linearly moving the mold shaft 62. For example, referring to FIG. 7a, when the distance between the revolution center T and the tool S is TS and the distance between the revolution center T and the rotation center P is L, the major axis is twice TS + L, and the short diameter The diameter is twice that of TS-L. As shown in FIG. 7a, when TS is 16.5 and L is 1.5, the major axis Da is 36 and the minor axis Db is 30. As shown in FIG. 7b, when TS is 17.5 and L is 7.5, the major axis Da is 50 and the minor axis Db is 20. In this way, ellipses having different ratios of the major axis and the minor axis of the ellipse can be formed. Further, as shown in FIG. 7c, when the revolution center T coincides with the rotation center P, L becomes 0. When TS is 10, a circle having the same major axis and minor axis, that is, a diameter D of 20, is formed.

  With reference to FIG. 8, the influence which the position change of a tool exerts is demonstrated. If the revolution center T and the rotation center P are fixed, the distance L between them is fixed, the position of the tool is changed, and the distance TS between the revolution center and the tool is changed, the ellipse changes. For example, when TS1 is 17.5 and L is 2.5, the major axis Da1 is 40 and the minor axis Db1 is 30. Here, when only TS2 is changed to 7.5, the major axis Da2 becomes 20, and the minor axis Db2 becomes 10. That is, the difference between the major axis and the minor axis is always constant, and an ellipse having a different size and eccentricity can be obtained. 7a to 7c and FIG. 8, the point I indicates the center of the intermediate axis, and the solid line between the points indicates the intermediate link.

  A revolving / spinning drive device 924 for a shaping wheel according to the second embodiment of the present invention shown in FIG. 9 includes a revolving drive unit and a rotation drive unit. Also in this embodiment, as will be described later, the linear movement device also functions as a part of the revolution drive unit. Unlike the first embodiment, the revolution drive unit has a central drive shaft 950 to which a rotational force is transmitted from a motor instead of the drum 50. The central drive shaft 950 extends through the center of the fixed shaft 958, and a bearing is interposed therebetween.

  Next, with reference to FIG. 9, the rotation driving unit rotates the mold connected to the mold axis using a link and a gear between the three axes. The revolution / spinning drive device 924 includes a fixed shaft 958, a mediating shaft 960, and a mold shaft 962 that are connected to each other by a link and are parallel to each other. The fixed shaft 958 is fixed to the frame. The mold shaft 962 is coupled with the mold, revolves around the fixed shaft 958, and rotates by itself. The fixed shaft 958 and the intermediate shaft 960 are connected by a first link 964. Bearings are interposed between the first link 964 and the central drive shaft 950 and between the first link 964 and the intermediate shaft 960. Further, the intermediate shaft 960 and the mold shaft 962 are also connected by a second link 966. Although not shown in detail, bearings are interposed between the second link 966 and the mold shaft 962, and between the first link 964 and the intermediate shaft 960. The second link 966 is located above the first link 964.

  Next, referring to FIG. 9, a fixed gear 968 is fixed to the fixed shaft 958. A first intermediate gear 970 that meshes with the fixed gear 968 is fixed to the intermediate shaft 960. A second intermediate gear 972 is fixed to the upper portion of the first intermediate gear 970 on the intermediate shaft 960. The second intermediate gear 972 meshes with a rotation gear fixed to the mold shaft 962, that is, a mold gear 974.

  Also in the embodiment shown in FIG. 9, the first media link 964 and the second media link 966 have the same link length. That is, the distance between the fixed shaft 958 and the intermediate shaft 960 is equal to the distance between the intermediate shaft 960 and the mold shaft 962. In this embodiment, the ratio of the diameters of the pitch circles of the first intermediate gear, the second intermediate gear, and the mold gear of the fixed gear is 1.2: 1.5: 1.5.

  The revolution / spinning drive device 924 includes a revolution drive link 976 and a drive link holder 978 in which the revolution drive unit rotates by the rotation of the central drive shaft 950. The link holder 978 is fixed to the drive shaft 950. A mold shaft 962 is fixed to the revolution drive link 976. A hole is provided in the upper part of the link holder 978, and the drive link 976 is extended through this hole. In the work poem, the link holder 978 and the drive link 976 are fixed, and if necessary, the fixing can be loosened, and the drive link 976 (that is, the mold shaft 962) can be linearly moved through the hole of the holder 978. Those skilled in the art will understand that such fixing and loosening is appropriately performed by a fixing set screw. When the drive link 976 is moved with respect to the link holder 978, the distance between the center of the drive shaft 950 that is the center of revolution and the center of the mold shaft 962 that is the center of rotation can be changed. Further, although not described in detail, a fixing stopper capable of fixing and loosening between the first intermediate link 964 and the drive shaft 950 and between the link holder 978 and the drive shaft 950 for fine adjustment. One skilled in the art will appreciate that they can be screwed together.

  Next, referring to FIG. 9, when the drive shaft 950 rotates, the link holder 978 and the drive link 976 rotate and the mold shaft 962 revolves. At this time, the intermediate shaft 960 connected to the links 964 and 966 also revolves. The first intermediate gear 970 meshes with the fixed gear 968 and revolves and rotates itself with respect to the center line of the intermediate shaft 960. The rotation of the first intermediate gear is transmitted to the intermediate shaft 960, which is transmitted to the mold gear 974 via the second intermediate gear 972. That is, the mold axis 974 comes to rotate in a desired direction and speed. At this time, the rotation direction is equal to the revolution direction, and the magnitude of the rotation speed is ½ of the magnitude of the revolution speed.

  With reference to FIGS. 10a to 10i, various examples of tools used in the apparatus for manufacturing an elliptical article of the present invention are shown. 10a and 10b are a perspective view of the forming roller 46 shown in FIG. 2 and a cross-sectional view cut along a plane extending in the radial direction from the rotation center axis. The roller 46 includes an intermediate shaft 88 and a cylindrical body 90 provided on the shaft. The cylindrical body 90 has a shape in which two truncated cones are arranged in the axial direction so that the radius decreases toward the center side, that is, the apex side faces each other, and a groove 92 is formed between the two truncated cones. Is provided. The groove 92 forms the foot of the container. The angle formed by the inclined surfaces of the two truncated cones forming the cylinder is the angle formed by the bottom of the container and the side edge.

  10a and 10b show an example of a forming roller according to the present invention, and the present invention is not limited thereto. As another example of the shaping roller, two frustums are attached, but a form with a bottom side of the frustum (see FIG. 10c) may be used, and a form in which a cylinder and a frustum are connected (FIG. 10d). Reference). When a truncated cone or a cylindrical roller is cut by a plane extending in the radial direction from the rotation center axis, the contour line (line formed by the roller surface) that appears appears as a straight line (see FIGS. 10b, 10c, and 10d). Unlike this, the outline may have a concave curve (see FIG. 10e), a convex curve (see FIG. 10f), or a combination of a straight line and a curve. The forming roller according to the above example can be used not only for forming an oval container with the forming wheel according to the present invention, but also for manufacturing a circular container with a normal forming wheel.

  FIG. 10g shows the formation of the container 10 using a molded rice paddle (also referred to as a spatula) 46a. The rice paddle is formed in a shape that matches the bottom, legs, and side edges of the container. FIG. 10 h shows a forming scoop 46 b that molds the inside of the container 10. The shaping paddle 46b is formed in a shape that matches the inner bottom and inner side edge of the container.

  FIG. 10i shows an example in which a workpiece 10d such as metal or wood is processed into an ellipse by using a cutting tool 46d. The workpiece 10d is driven by the revolution / spinning drive device as in the previous embodiment, and the cutting tool 46d is fixed. In addition to the cutting tool 46d, an elliptical shape can be processed using a cutting tool such as a milling cutter or a grinding tool such as a grinding wheel.

  As mentioned above, although this invention was demonstrated using the said embodiment, this invention is not restrict | limited to this. In the above-described embodiment, the whole workpiece has been described as having an elliptical shape. However, as shown in FIG. 10i, it is also within the scope of the present invention to manufacture an article having a partial elliptical shape. In the above embodiment, the clay is molded as a workpiece with a shaping wheel. However, other than the clay, rubber clay that can be molded with a certain degree of viscosity, other moldability such as flour dough. Material workpieces can also be formed.

  The revolution / spinning drive device in the above embodiment uses a mechanical power transmission element to adjust the ratio of the revolution speed to the rotation speed to 2: 1, but other forms of revolution / spindle drive device are considered. You can also. For example, in another embodiment, a revolution drive motor and a rotation drive motor may be provided separately. That is, the revolution drive motor revolves the mold axis, and the rotation drive motor drives the mold axis to rotate. At this time, the rotation driving motor transmits to the mold axis a driving force having a magnitude of ½ of the revolution speed in the direction opposite to the revolution direction. As a result, the mold axis eventually rotates naturally occurring due to revolution and rotation caused by rotation of the rotation motor at a speed that is half the revolution speed in the revolution direction. Become.

  According to the present invention, there is provided an apparatus for manufacturing an article in which the shape of the article is partially or entirely elliptical, and the object of the present invention can be achieved. For example, an apparatus for forming an oval container, i.e., a forming wheel is provided. By using this shape-making wheel, it is possible to manufacture a high-quality oval container that produces a normal round-shaped container using a wheel. In the end, it is a pottery molding means by rotation of the shaft that was thought to be possible only to form a circular shape in the past, such as a potter's wheel, a forming potter's wheel, an automatic molding machine, etc. Semi-automatic production is possible.

  In addition, elliptical articles having different ellipse eccentricity (long degree) or different sizes can be manufactured in one manufacturing apparatus, and a perfect circular article can be manufactured in one manufacturing apparatus. Further, a forming roller for forming a moldable material such as clay with a forming wheel is also provided.

  While the present invention has been illustrated and described with reference to the above embodiment, it is needless to say that various changes, modifications, or additions are possible within the scope of the present invention.

FIG. 1 is a view showing a container manufactured with a shaping wheel according to an embodiment of the present invention, (a) is a plan view thereof, and (b) is a partial right sectional view thereof, (C) is a partial front sectional view thereof. FIG. 2 is a schematic view showing a shaping wheel according to an embodiment of the present invention. FIG. 3 is a partially cut perspective view showing a drum in the revolution / rotation driving device of the shaping wheel of FIG. FIG. 4 is a front sectional view showing a drum in the revolution / rotation driving device of the shaping wheel of FIG. FIG. 5 is a plan sectional view showing a drum in the revolution / spinning driving device of the shaping wheel of FIG. FIG. 6a is a diagram for explaining the principle of the ellipse forming operation using the revolution / rotation driving device of the shaping wheel of FIG. FIG. 6B is a diagram for explaining the principle of the ellipse forming operation using the revolution / rotation driving device of the shaping wheel of FIG. FIG. 6 c is a diagram for explaining the principle of the ellipse forming operation using the revolution / rotation driving device of the shaping wheel of FIG. 2. FIG. 6d is a diagram for explaining the principle of the ellipse forming operation using the revolution / rotation driving device of the shaping wheel of FIG. FIG. 6e is a diagram for explaining the principle of the ellipse forming operation using the revolution / rotation driving device of the shaping wheel of FIG. FIG. 7a is a diagram showing the relationship between the distance between the revolution center axis and the revolution center axis of the revolution / rotation drive device of the shaping wheel of FIG. 2 and the elliptical shape of the article to be molded. FIG. 7b is a diagram showing the relationship between the distance between the revolution center axis and the revolution center axis of the revolution / rotation drive device of the shaping wheel of FIG. 2 and the elliptical shape of the article to be molded. FIG. 7c is a diagram showing a relationship between the distance between the revolution center axis and the revolution center axis of the revolution / rotation driving device of the shaping wheel of FIG. 2 and the elliptical shape of the article to be molded. FIG. 8 is a diagram showing the relationship between the distance between the revolution center axis of the revolving / spinning driving device of the shaping wheel of FIG. 2 and the tool and the ellipse. FIG. 9 is a perspective view showing a revolving / spinning drive device of another structure used for a shaping wheel according to another embodiment of the present invention. FIG. 10a is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10 b is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10c shows various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10d is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10e is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10f is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10g is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10h is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention. FIG. 10 i is a diagram showing various examples of tools used in the apparatus for manufacturing an elliptical article according to the present invention.

Claims (27)

An apparatus for manufacturing an article having an elliptical shape at least partially by forming or processing the workpiece by relative movement of the workpiece and a tool,
A workpiece support for mounting the workpiece;
Revolution / rotation having a revolution drive machine that revolves the workpiece support around a first axis, and a rotation drive machine that turns the workpiece support around a second axis parallel to the first axis. A driving device;
A tool base for supporting the tool and positioning the tool at a fixed position relative to the first axis;
An elliptical article characterized in that the revolution / spinning drive device maintains the revolution direction and the rotation direction of the workpiece support tool the same, and maintains the magnitude of the revolution speed and the magnitude of the revolution speed at 2: 1. Manufacturing equipment. The rotation driving machine of the revolution / spinning driving device is:
A fixed revolution center axis located on the first axis;
A rotation center axis which is located on the second axis and is connected to the workpiece support;
An intermediate axis parallel to the revolution center axis and the rotation center axis;
A first link connecting the revolution center axis and the intermediate axis;
A second link connecting between the intermediate shaft and the rotation center shaft;
A pair of gears fixedly engaged with the revolution center shaft and the intermediate shaft;
The apparatus for manufacturing an elliptical article according to claim 1, further comprising a pair of gears fixed to and engaged with the intermediate shaft and the rotation center shaft.   The length of the said 1st link and the 2nd link is the same, The manufacturing apparatus of the elliptical article | item of Claim 2 characterized by the above-mentioned.   The revolving drive machine includes a drum that surrounds the rotation drive machine and rotates around a first axis, and a connecting rod that connects the inside of the drum and the rotation center axis. An apparatus for manufacturing the oval article described.   A drum that covers the rotation driving mechanism and rotates about a first axis; a linear movement mechanism that extends radially inside the drum and passes through the first axis and the second axis; The apparatus for manufacturing an elliptical article according to claim 2, wherein a distance between the rotation center axis and the revolution center axis can be adjusted.   The linear movement mechanism includes a support block fixed to the drum, a feed block connected to the rotation center shaft, a lead screw extending between the support blocks through the feed block, and the lead screw. The apparatus for manufacturing an elliptical article according to claim 5, further comprising: a guide rod that is extended by the guide block and is fixed to the support block through the feed block.   The revolution drive machine includes a drive shaft that is rotatably mounted inside the fixed revolution center shaft, and a drive link that connects the drive shaft and the rotation center shaft. The apparatus for manufacturing an elliptical article according to claim 2.   2. The apparatus for manufacturing an elliptical article according to claim 1, wherein the revolution driving machine has a revolution motor for revolution driving, and the revolution driving machine has a rotation motor for revolution driving.   2. The apparatus for manufacturing an elliptical article according to claim 1, wherein the revolution / spinning drive device further includes a linear movement mechanism that adjusts a distance between the first axis and the second axis.   The apparatus for manufacturing an elliptical article according to any one of claims 1 to 9, wherein an elliptical container is manufactured.   11. The workpiece support is a mold having a shape that matches a shape of a part of an elliptical container, and the other part of the elliptical container is formed by a tool. Oval article manufacturing equipment.   12. The apparatus for manufacturing an elliptical article according to claim 11, wherein the tool is a roller that forms a container while rotating about an axis.   13. The apparatus for manufacturing an elliptical article according to claim 12, wherein the rollers are arranged such that the rotation center axis thereof meets the revolution center axis.   The apparatus for producing an elliptical article according to claim 12, wherein the roller is formed of two truncated cones arranged along a rotation center axis thereof.   The workpiece support is a mold having a shape that matches a shape of a part of an elliptical container, and the tool is a shaper that forms the other part of the elliptical container. The apparatus for manufacturing an elliptical article according to claim 10.   2. The apparatus for manufacturing an elliptical article according to claim 1, wherein the workpiece is wood or metal, and the tool is a cutter for processing the wood or metal. A method of manufacturing an article having an oval shape at least in part,
Mounting a workpiece to be molded or processed on the workpiece support;
Revolving the workpiece support around the first axis and rotating the workpiece support around the second axis;
And a step of positioning the tool at a certain distance from the first axis.   The method of manufacturing an oval article according to claim 17, further comprising adjusting a distance between the first axis and the second axis.   The method of manufacturing an elliptical article according to claim 17, further comprising adjusting a distance between the first axis and the tool.   The method of manufacturing an elliptical article according to claim 17, wherein the step of positioning the tool includes a step of positioning a molding roller, which is a tool, and a step of rotating the molding roller. A method of producing a circular or elliptical article by processing a work of formable material with a forming wheel,
Attaching a work piece of formable material to the mold;
Rotating the mold about a rotation axis;
And a step of positioning a molding roller that rotates about a rotation axis different from the rotation axis of the mold at a predetermined distance from the rotation axis of the mold.   The method for manufacturing an article according to claim 21, further comprising a step of rotating the shaping roller. A forming wheel for processing a work of formable material to form a circular or elliptical article,
A mold for mounting a work piece of the moldable material;
A driving device for rotationally driving the mold around a rotation axis;
A shaping wheel comprising a shaping roller that rotates about a rotation axis different from the rotation axis of the mold.   The shaping roller according to claim 23, wherein the shaping roller is configured such that its rotation axis meets the rotation axis of the mold.   24. The shaping wheel according to claim 23, wherein the shaping roller includes a drive device that rotates. A forming roller that is mounted on a forming wheel and forms a workpiece of a formable material,
A rotation axis;
A molding roller comprising: a cylindrical body fixed to a rotating shaft and having a circumferential surface in contact with the workpiece.   27. The forming roller according to claim 26, further comprising a driving device that rotationally drives the rotating shaft.

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