JP2007268640A - Debburring brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a debburring brush for deburring the machined surface of a work manufactured by machining capable of achieving deburring work without any part left undone at the minimum number of times. <P>SOLUTION: This debburring brush includes a brush base 1 having a rotating shaft, and the brush is mounted on the brush base 1. A number of brush bristles are disposed and mounted to the brush base 1 and a configuration A is non-circular. The central part of the brush base 1 is a non-disposition area (a) of the brush. The brush bristles are formed of a bundle 2 of brushes and removably attached to the brush base 1. The configuration A has a square shape or an irregular shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a deburring brush for deburring a workpiece processing surface manufactured by machining, and capable of performing a deburring operation without leaving a minimum number of times.

Conventionally, brushes for deburring exist in order to remove burrs and burrs remaining on the surface of a workpiece produced by machining. In many of them, a brush with a large number of bundles of metal fibers rotates at a high speed to rub the workpiece and remove burrs and burrs. There are many types of this type, but a typical one is disclosed in Patent Document 1.
JP 2004-237383 A

  As disclosed in Patent Document 1, a plurality of metal bristle bundles are generally mounted on a disk portion, and the arrangement configuration thereof is generally circular. And the operation | work which removes a burr | flash with many metal hair | bristle bundles is performed by rotating a disk part at high speed. However, this type of deburring brush is attached to a machining center, etc., and when deburring the processed surface on which the workpiece has been milled, the burrs can be removed evenly. There was a problem that there was always a place that could not be completely removed.

  In particular, the work surface of the workpiece has a shape in which a plurality of large and small recesses having different sizes are scattered, or a straight line so that the shape of the recesses and the outer peripheral contour of the work surface are different, There are arcs, etc. whose inclinations are directed in various directions. There was a problem that a deburring brush was applied to such a machined surface, and the burrs at the edge of the recessed part of the machined surface and the outer peripheral contour could not be removed by the deburring brush and remained. .

  For this reason, there is a case where it is necessary to manually deburr the workpiece processing surface that cannot be removed by the deburring brush, and it is difficult to reduce the deburring of the workpiece processing surface using only the deburring brush. In addition, after deburring with a deburring brush, it is necessary for the person to perform a visual inspection for burrs on the work surface of the workpiece to remove insufficient deburring or the remaining deburring manually. It was difficult to improve manufacturing efficiency. As for the cause of the problems of the conventional deburring brush, the brush portions are arranged in a state of being close or dense in the circumferential direction, so that each brush of the brush portion is difficult to bend, and the linear surface of the brush The contact between the (belly) and the work surface of the work cannot be made, and the tip of the brush and the work surface of the work become extremely small, so that the brush cannot be sufficiently deburred.

  Further, the brush portion is continuously rubbed against the burr portion, and one of the brush hairs has a similar shape, so that it is difficult to remove the burr. The problem (technical problem or object) to be solved by the present invention is to achieve good contact resistance with respect to the work surface and to improve deburring performance and efficiency.

  A first aspect of the present invention is a brush base having a rotating shaft, a deburring brush which is attached to the brush base and has a large number of bristles arranged and attached to the brush base and has a non-circular arrangement. As a result, the above problems were solved. According to a second aspect of the present invention, in the above-described configuration, the central portion of the brush base is a deburring brush that serves as a non-arranged region of the brush, thereby solving the above problem.

  According to a third aspect of the present invention, in the above-described configuration, the brush bristles are configured by a bunch of brushes, and the deburring brush is detachably attached to the brush base. According to a fourth aspect of the present invention, in the above-described configuration, the arrangement configuration is a deburring brush having a square shape.

  According to a fifth aspect of the present invention, the above problem is solved by using a deburring brush having an irregular shape in the configuration described above. The invention of claim 6 solves the above-mentioned problem by providing a deburring brush in which the arrangement configuration is substantially elliptical in the configuration described above.

  In the first aspect of the invention, the arrangement of the plurality of brushes is non-circular, so that the brush contacts the burr on the work surface of the workpiece so that the brush contact gradually increases and decreases, and is intermittent. Contact can be achieved, leaving no or reduced deburring. By contacting with such a workpiece, the density of the brush hairs becomes sparse, and each brush hair can be easily bent.

  Thereby, the contact between the linear surface (belly) of the brush and the processed surface of the workpiece can be satisfactorily performed, and deburring can be performed without leaving or reducing. And the rationalization in a deburring process is achieved and the efficiency of workability | operativity can be improved. Moreover, automation of the deburring equipment can be facilitated. Furthermore, even if there is a remaining burr, the remaining burr can be minimized, and the manual deburring can be greatly reduced.

  According to a second aspect of the present invention, the central portion of the brush base is provided with a non-arranged region of the brush, so that a good deburring operation can be performed without applying an extra load in the deburring operation. . In the invention of claim 3, since the brush bristles are constituted by a brush bundle and are detachable from the brush base, a good deburring operation can be performed by replacing the brush bundle when it is worn or damaged. Can be easily maintained.

  In the invention of claim 4, since the arrangement configuration is a square shape, the brush bundles arranged between the square corner portions can be provided in a four-surface direction and can be provided in a well-balanced manner. And the interval (intermittent) of the variable contact area which increases / decreases between the brush bundle and the workpiece, the size of the region, etc. are not too large and are not too small. The contact resistance can also be improved, and the deburring performance and efficiency can be improved. Further, the invention of claim 5 has the same effect as that of claim 1 because the arrangement configuration is different. The invention according to claim 6 has the same effect as that of claim 1 because the arrangement configuration is a deburring brush having a substantially elliptical shape.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1, 7C, etc., the main configuration of the present invention is a brush base 1 having a rotating shaft 3, and a brush base 1 that is attached to the brush base 1 and a large number of brush hairs are formed as a bundle. The brush bundle 2 is made up of. As shown in FIGS. 1B, 1C, and 7A, the brush base 1 includes a holding portion 11 and a connecting portion 12.

  Both the holding part 11 and the connecting part 12 are formed in a disk shape having substantially the same diameter. The holding portion 11 and the connecting portion 12 are joined so that the diameter centers coincide. For the joining, a fixing tool 4 such as a screw or a bolt / nut is used. When a screw is used as the fixing tool 4, a screw hole 41 is formed on the holding portion 11 side, and a shaft through hole 42 is formed in the connecting portion 12 (see FIG. 7A).

  A rotating shaft 3 to be mounted on a holder 6 of a machine tool such as a machining center is mounted on the connecting portion 12 (see FIG. 7B). The rotating shaft 3 is fixed to the center of the diameter of the connecting portion 12, and the rotation is transmitted from the holder 6 of the machine tool to the rotating shaft 3, and the holding portion 11 rotates together with the connecting portion 12. Since the connecting portion 12 is mounted on a holder of a machining center, the connecting portion 12 is formed of a metal material (steel material), and the holding portion 11 is formed of an aluminum alloy.

  A plurality of holding through-holes 11a, 11a,... For mounting the plurality of brush bundles 2, 2,... Are formed (see FIGS. 1B and 7A). The number of the holding through holes 11a is equal to the number of the brush bundles 2 attached. Further, a large-diameter concave portion 11b that is concentric with the holding through hole 11a is formed on the side of the holding portion 11 where the connecting portion 12 is joined.

  A plurality of the brush bundles 2 are arranged and mounted on the brush base 1 based on the arrangement configuration A described later. By the aggregate of the plurality of brush bundles 2, 2,. A brush is constructed. As shown in FIG. 1B, the brush bundle 2 includes a bristle portion 21 and a root portion 22. The bristles 21 are aggregates of linear materials 21a, 21a,..., And each linear material 21a is formed from a resin material. Further, the linear material 21a may contain an abrasive. Further, the linear members 21a, 21a, ... may be metal wires. Moreover, what was formed in the waveform (wave) along the longitudinal direction may be used for this linear material 21a.

  By making the linear material 21a into a wave shape, the linear materials 21a, 21a,... Are separated from each other, and the linear materials 21a, 21a,. It becomes easy to diffuse outward in the diametrical direction (see FIG. 1B). Therefore, in deburring the work 5, one of the linear members 21a of the bristle portion 21 can easily come into contact with the burr (edge), and deburring can be reliably performed. Moreover, although the said linear material 21a is made into the waveform as mentioned above, this linear material 21a is good also as a linear form.

  The root portion 22 has a thin disk shape, and is inserted and disposed in the large-diameter concave portion 11b continuous with the holding through-hole 11a. The root portion 22 is sandwiched between the step of the large-diameter recess 11b and the connecting portion 12, and is stored in the large-diameter recess 11b. And the linear members 21a, 21a,... Of the bristles 21 are dense so as to be narrowest at the 22 base portions, and the diameter of the bundle is smaller than the diameter of the root portion 22. The bristles 21 are inserted through the holding through-holes 11a [see FIG. 7 (A)].

  In order to configure the deburring brush according to the present invention, first, the bristle portion 21 of the brush bundle 2 is inserted into the holding through hole 11a of the holding portion 11, and the root portion 22 is inserted into the large-diameter concave portion 11b. The bristle portion 21 protrudes outward from the holding through hole 11a (on the opposite side to the large-diameter concave portion 11b side).

  And the connection part 12 is arrange | positioned at the joint surface of the said holding | maintenance part 11, and the said base part 22 will be in the state clamped by the said holding | maintenance part 11 and the connection part 12. FIG. And the position of the said screw hole 41 and the said shaft through-hole 42 is made to correspond, and the said holding | maintenance part 11 and the connection part 12 are fixed with the fixing tool 4. FIG. The brush bundle 2 is detachable with respect to the holding part 11, and the brush bundle 2 can be exchanged in an unusable state due to wear.

  As described above, a plurality of brush bundles 2 are mounted on the holding portion 11, and the mounted array shape is referred to as an arrangement configuration A. The arrangement configuration A has various shapes depending on the surrounding shape by the plurality of brush bundles 2 attached to the holding portion 11. First, the arrangement configuration A is non-circular. In other words, a case where a plurality of brush bundles 2, 2,... Are arranged in a circumferential shape is excluded. Further, the central part of the holding part 11 of the brush base 1 is a non-arranged region a where the brush bundles 2, 2... Are not mounted (see FIG. 1A).

  The arrangement configuration A has a square shape as the first embodiment, and there are square shapes such as a square and a rectangle. First, in the arrangement configuration A having a square shape, as shown in FIG. 1A, the brush bundle 2 is arranged to be a square shape. Specifically, the brush bundle 2 is disposed at each square corner. And the brush bundle 2 is arrange | positioned between the brush bundles 2 and 2 arrange | positioned between each corner.

  Next, in 2nd Embodiment of the said arrangement | positioning structure A, as shown to FIG. 5 (B), the said brush bundle 2 is arranged so that it may become a triangle. The triangle is preferably a regular triangle. Next, 3rd Embodiment of the said arrangement | positioning structure A is made into a different shape, and is set as arrangement | positioning structures A other than the above-mentioned square shape. As this arrangement configuration A, as shown in FIG. 5 (C), it is arranged in a cross shape. In addition, although not particularly illustrated, there are various kinds of different arrangement configurations A such as a Y shape, an H shape, an L shape, a T shape, and a Z shape.

  Further, the arrangement configuration A includes an elliptical shape (see FIG. 6A), a drum shape, a barrel shape, and the like. In the arrangement configuration A, the brush bundles 2 are appropriately arranged, and the arrangement of the brush bundles 2 may be made regular according to a square shape, a triangular shape, an elliptical shape, or the like as in the above-described embodiment.

  Furthermore, there is a case in which the brush bundle 2 has an irregular state in which a few of the brush bundles 2 are missing from the regular arrangement in the arrangement configuration A having a square or rectangular shape or an elliptical shape. [Refer FIG. 6 (B) and FIG. 6 (C)]. FIG. 6D shows an arrangement configuration A having an elliptical shape.

  As described above, when the brush bundle 2 is mounted on the brush base 1 based on the arrangement configuration A, the dense area of the linear members 21a, 21a,. Each of the materials 21a, 21a,. Therefore, the contact between the belly portions of the linear members 21a, 21a,... Of the brush and the processed surface of the workpiece is satisfactorily performed, and it is possible to remove burrs (edges) with no remaining or reduced. Become.

  Next, the deburring operation of the deburring brush of the present invention on the processed surface of the workpiece 5 will be described. The workpiece 5 to be removed from the burr (edge) has a plurality of concave forming portions 51 having different shapes and an outer peripheral contour 52. Burrs (edges) are generated at each corner (ridge line portion) on the surface to be processed (milled plane) (see FIGS. 3 and 7C). Then, the rotating shaft 3 of the deburring brush of the present invention mounted on a machine tool such as a machining center is bonded and mounted to the holder 6, and the burr (edge) is removed by the brush while rotating the deburring brush.

  The deburring process will be described using a deburring brush in which the arrangement configuration A of the brush bundle 2 is a square. FIG. 2 shows a configuration in which eight brush bundles 2 have a square arrangement configuration A. The diagonal lines of the arrangement configuration A and the brush bundles 2 (shown by circular chain lines) located at each corner are shown in FIG. An imaginary square (shown by a solid line) is formed when the intersection with the outside is connected. This virtual square is referred to as an effective contact area F.

  And the said effective contact area | region F rotates by rotation of the brush base 1 (refer FIG. 3). Further, the trajectory to the workpiece 5 by the brush bundle 2 arranged at the center position of each side of the arrangement configuration A is defined as the radius of the minimum contact locus circle Pa. If the radius of the maximum contact locus circle Pb is Rb as the locus of rotation of the effective contact area F, Rb> Ra. The difference in radius (Rb-Ra) is referred to as contact bulge amount T.

  If the relative position between the deburring brush and the workpiece 5 does not change at a predetermined position Q (see FIG. 4) of the workpiece 5, the contact bulge amount T is arranged in a square arrangement by the rotation of the brush base 1. This is an amount by which the brush bundle 2 positioned at the corner portion of the configuration A bulges in the diametrical direction with respect to the minimum contact locus circle Pa [see FIGS. 4A to 4D].

  That is, the brush bundle 2 positioned at the corner of the square arrangement configuration A every time the brush base 1 rotates at the contact point with the position Q where the burr (edge) of the workpiece 5 is generated by the brush bundle 2. The brush bundle 2 is swelled so that the contact of the brush bundle 2 gradually increases or decreases, or intermittently hits the burr (edge) at the predetermined position Q, and the brush bundle 2 at such a bulging point is intermittent. The burr (edge) is removed by manual contact (non-continuous contact). In this way, the brush bundle 2 is intermittently (intermittently) contacted without continuously contacting the portion of the workpiece 5 to be processed.

  Since the brush bundle 2 is intermittently contacted with the work surface of the workpiece 5, the burr (edge) is continuously scraped by a conventional deburring brush, and the contact by the brush bundle 2 is performed. When the surface is increased or decreased and this is an intermittent operation, the burr (edge) is instantaneously hit, and the burr (edge) is removed.

  4 (A) to 4 (D) show the rotation angle every 15 degrees when the arrangement configuration A of the brush bundle 2 is a square. According to this, it is disclosed that the contact bulge amount T increases or decreases. As shown in FIG. 4, since the impact is received by the brush bundle 2 in an impact load state intermittently (intermittently) when viewed from the burr (edge) side, the removal load by continuous burr removal as in the prior art. The removal load becomes even larger than that, and burrs (edges) can be removed.

  The intermittent (intermittent) contact of the brush bundle 2 moves or rotates the entire processing surface of the workpiece 5 while the deburring brush rotates with respect to the processing surface of the workpiece 5. The workpiece 5 moves relative to the deburring brush. Along with this operation, the contact area between the brush bundle 2 and the workpiece 5 is variable, and the variable contact state is intermittently performed, so that the brush bundle 2 strikes the burr (edge). As a result, an impact load is applied and good deburring is possible. Moreover, since the secondary deburring by manual work can be eliminated or reduced after deburring, a synergistic effect that the deburring process can be easily automated by the equipment is obtained.

(A) is a plan view of a brush base viewed from the brush side in the arrangement configuration of the first embodiment of the present invention, (B) is a longitudinal side view of the present invention, and (C) is a side view of the present invention. In the present invention, it is the schematic diagram which shows the arrangement configuration of the brush and the contact area of the work. FIG. 5 is an operation diagram showing a state in which a deburring brush rotates and a contact area with a workpiece increases or decreases in the present invention. (A) thru | or (D) are process drawings which show a deburring state in this invention. (A) is a plan view of the brush base as viewed from the brush side with the arrangement configuration of the brush rectangular, (B) is a plan view of the brush base as viewed from the brush side with the configuration configuration as a triangle shape, (C) It is the top view of the brush base seen from the brush side which made the arrangement configuration cross shape. (A) is a plan view of the brush base as seen from the brush side with an elliptical arrangement of the brushes, and (B) is a brush base as seen from the brush side with a square arrangement and five brush bundles. (C) is a plan view of the brush base as viewed from the brush side with a rectangular arrangement and six brush bundles, and (D) is a view from the brush side with an ellipse arrangement and seven brush bundles. It is the top view of a brush base. (A) is an exploded cross-sectional view of the deburring brush of the present invention, (B) is a side view in which the present invention is mounted on a holder of a machine tool such as a machining center, and (C) is a deburring brush of the present invention. It is a perspective view of a workpiece | work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Brush base, 2 ... Brush bundle, A ... Arrangement configuration, a ... Non-arrangement area.

Claims (6)

  A brush base having a rotating shaft, a deburring brush which is mounted on the brush base and has a large number of brush hairs mounted on the brush base and has a non-circular arrangement.   The deburring brush according to claim 1, wherein a central portion of the brush base is a non-arrangement region of the brush.   The deburring brush according to claim 1 or 2, wherein the brush bristles are constituted by a brush bundle and are detachable from the brush base.   4. The deburring brush according to claim 1, wherein the arrangement configuration is a square shape.   4. The deburring brush according to claim 1, wherein the arrangement configuration is an irregular shape.   The deburring brush according to claim 1, wherein the arrangement is substantially elliptical.

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