JP2006312214A - Tool and method for cutting and separating raw material into semi-spherical shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cut and separate a raw material into a semi-spherical shape by machining capable of omitting complicated steps and high-level facilities. <P>SOLUTION: A center portion of a workpiece mounted to a lathe is cut and opened, so as to secure a turning center of a cutting tool. Then, a cutting tool 19 is installed, so as to devise a cutting blade holding arm concentrically turning in a direction perpendicular to a rotary shaft of the workpiece 14 to make the turning center of the cutting tool is formed into a semi-spherical shape, and with a sphere identical to a cutting spherical groove made by the cutting blade during cutting. The cutting blade holding arm has a sectional area larger than that of the cutting blade and sufficient strength, and the cutting blade can be transferred to the rotary shaft of the workpiece smoothly, so as to cut and separate the workpiece. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

      This cutting tool and tool holder is a turning mechanism, and a bowl-shaped cube is formed by simultaneously rotating the rotating shaft of the workpiece rotated by the lathe and the rotating shaft of the cutting tool at right angles and cutting them simultaneously. It realizes the hemispherical cutting.

  Cutting with a three-dimensional instrument such as a dish or bowl in the process of rolling wood or turning a metal is completed with advanced technology as described in the non-patent document “Living with wood, making use of wood” Has been.

  However, it is a technique such as molding by cutting either the convex surface or the concave surface of the sphere, and it is impossible to cut and separate the sphere to use both surfaces.

    In addition, in the production of the woodworking container, it has been completed by a combination of clipping and assembling technique in Japanese Patent Laid-Open No. 10-291206.

  However, it has not realized the production of a container that can be cut out three-dimensionally and omit the assembly process.

A technique for turning a metal material by turning is also provided in Japanese Patent Application Publication No. 2003-94203. However, in order to obtain a circular combination shape, both a processed product cut by three-dimensional cutting and a cut processed product are used. It is not provided as a technology that makes it possible.
JP 2003-94203 A Japanese Patent Laid-Open No. 10-291206 Ryozo Kawakita, “Living with trees, making the most of trees” Shodensha 2004

    The problem to be solved is that when using a lathe to cut a sphere and using both sides of the concavo-convex, a cutting blade that rotates at the target radius with a rotation axis orthogonal to the axis of rotation of the material is There was a need for three-dimensional cutting that seems physically impossible, such as machining that advances, and the cutting blade is always cut at an appropriate angle in a spherical shape while the material to be processed is rotated by a lathe etc. Further, there is a problem that the strength of the arm becomes a problem because the portion that becomes the arm that holds the cutting blade enters the cutting groove accurately and without delay and the arm becomes long.

    The problem of three-dimensional cutting into a sphere is a hemispherical cutting, and the center holding part of the tool installation base is cut in advance in the center part (FIG. 5-35) of the workpiece (FIG. 5-26) to open the center of the sphere. By securing the center of the different rotation axis and concentrically setting the center of the rotation axis of the cutting tool, it is possible to cross the two rotation axes concentrically. One of the rotation axes depends on the lathe As the rotation axis of the workpiece (FIG. 4-20), the concentric rotation orthogonal to the rotation axis (FIG. 4-25) is applied to the cutting tool, and the two rotation axes are concentric and orthogonal. Cutting process by simultaneous rotation of two axes was solved.

    By using an arc arm with the same radius as the radius of the sphere to be cut to accurately cut the spherical surface of the cutting blade, the angle of the cutting blade fixed to the arm could be set to an appropriate angle at any cutting stage. .

  In addition, in order to increase the strength of the arm part that holds the cutting blade, it is possible to make the arm wide by making the shape in which the vertical and horizontal cross-sections of the arms are both the same spherical surface as the workpiece. I was able to secure it.

    Furthermore, since the arm has the same shape as the cutting groove, the cutting can proceed without any delay.

    According to the present invention, spherical cutting has been realized, and a bowl-shaped product that has been manufactured by cutting or the like can be cut and processed.

    A spherical product can be easily produced without using a molding process, and a rated product can be produced without requiring advanced technology and equipment.

    As preparation for installing the workpiece on the lathe, a place (FIG. 5-35) where the center holding portion (FIG. 5-27) of the tool holding base enters the center of the workpiece is secured by turning or the like.

    The center holding position of the tool mounting base is aligned with the center of the workpiece by the slide type processing center point holding mechanism of FIG. 5-34, and the cutting tool (FIG. 4-19) is turned to the end of the turning cutting tool feed rail (FIG. 4-18). Attach from the removable bolt (Fig. 4-17).

Rotate the work piece manually to check that the material does not touch the cutting tool or tool mount (Fig. 4-16).

    Although turning is started, the speed of the cutting feed is set to a speed at which the cutting tool does not receive strong friction on the cutting tool feed rail.

Further, cutting is completed while cutting off the cutting arm and removing chips accumulated in the cutting groove during cutting.

    If the cutting arm is cut to the cutting tool stopper bolt (Fig. 4-22) by making the circular arm of the cutting tool longer than a quarter circumference, the pivot (Fig. 4-14) of the workpiece (Fig. 4-14) 20) and can be separated.

As in the production of the processed product shown in FIG. 6, a cutting tool having arms with different radii is prepared and used from a tool with a small radius, and when cut in order, a plurality of processed products are continuously produced from one block of material. Can be made.

    Since the shape of the arm holding the blade has a structure that is strong against stresses such as bending and twisting, it is possible to perform accurate grooving processing on both sides of the spherical surface by changing the blade edge.

  Until now, containers for various uses have been mass-produced by integral molding with chemical products, etc., but in the present situation where various environmental problems are emerging, materials are wasted with minimal production processes using natural materials such as trees. This makes it possible to produce a large number of products at low cost and provide inexpensive and safe products. Furthermore, since it is a technology that can process a wide variety of materials, it can be applied to metal processing and so on, and it is possible to manufacture rated products with inexpensive equipment and easy processing.

Single plan view of cutting tool Single front view of cutting tool Solid figure of cutting tool arm Plan view of workpiece and cutting tool placed in the cutting tool installation mechanism Front view of workpiece and cutting tool placed in the cutting tool installation mechanism Example of cutting multiple workpieces from one block of material

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Center part of turning cutting blade provided in cutting tool 2 Cutting tool main body 3 Turning radius of cutting blade holding arm with spherical surface shape 4 Cutting blade 5 Cutting arm holding cutting blade 6 Cutting blade 7 Cutting blade with spherical surface shape Front view of holding arm 8 Cutting tool body 9 Cutting tool handle 10 Location of cutting blade attached to cutting arm 11 Curved portion of cutting arm that determines radius of workpiece 12 Concentric arm crossing with same diameter as workpiece radius Curve 13 Inner surface in which inner and outer surfaces of cutting arm are concentric spherical surfaces in both longitudinal and transverse sections 14 Plane section of workpiece 15 Presumed shape of workpiece to be cut from workpiece 16 Cutting tool mounting base 17 Supporting cutting tool Detachable bolts and nuts for installation when attaching cutting tools to the rail.
18 Rails installed concentrically with the cutting tool that supports the cutting tool up and down 19 Cutting tool main body 20 Rotating shaft of workpiece 21 Turning direction of workpiece 22 Bolt serving as a stopper of the cutting tool 23 Cutting blade holding arm 24 Processing center point Slide groove 25 of the holding mechanism 25 Virtual line indicating the turning direction of the cutting tool 26 Workpiece 27 Center holding bolt of the turning tool 28 Center holding nut 29 Cutting tool arm 30 Cutting tool feed rail 31 Cutting tool body 32 Cutting tool Handle 33 Slide type processing center point holding mechanism Slide fixing bolt nut 34 Slide type processing center point holding mechanism 35 Location where the central part of the workpiece is cut open 36 Processed product cut out first in continuous cutting example 37 Second Cut-out processed product 38 Example in which the processed material itself becomes a processed product

Claims (3)

  An arm characterized by a curved spherical shape that holds a cutting blade for cutting a material such as wood or metal into a spherical surface by turning.   A cutting tool to which the arm of claim 1 is attached and a center point of rotational cutting is provided.   A processing method for cutting a sphere with a cutting tool installation base mechanism having a rail for restricting the vertical movement of the cutting tool, having a structure in which the cutting tool according to claim 2 is held at a central point and fed by a circular curve.

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