• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:DK200800191U1
    申请号:DK200800191U
    申请日:2008-10-10
    公开日:2008-10-24
    发明作者:Jespersen Poul Erik
    申请人:Flex Trim As；
    IPC主号:
    专利说明:

    1DK 2008 00191 U3
    The present invention relates to a grinding wheel and of the kind specified in the preamble of claim 1.
    When grinding with, for example, an angle grinder or a drill, most of the grinding wheels used are either a flat disk or an annular disk, where some force must be used to keep the grinding wheel stable against a surface which is desired to be grinded.
    Furthermore, if a flat grinding wheel is used, it is difficult to grind concave surfaces without leaving clear grinding grooves along the circumferential edge of the grinding wheel.
    If an annular disc is used, where there is only abrasive material from the periphery of the abrasive disc and a piece into the abrasive disc, in order to grind the entire surface, some sweeping movements with the grinding machine must be used, which can be tiring for the operator, who simultaneously with the sweeping movements. must resist the rotary movement of the grinder.
    If you need to grind in recesses / countersinks, it is difficult to use the known abrasive discs, since it is not possible to satisfactorily insert the abrasive parts of the abrasive disc into recesses / countersets, leaving an evenly sanded surface.
    Typically, the operator will try to get the edge of the grinding wheel into recesses / depressions, which causes the grinding wheel to be destroyed and only a uniform grinding of the recess / recess is achieved.
    The object of the present invention is therefore to provide a grinding wheel which ensures a stable and uniform grinding and which is suitable for grinding concave, convex and flat surfaces as well as recesses / countersinks.
    This is achieved with a grinding wheel as described in the preamble of claim 1, wherein the surface has increasing height from the inside of a periphery of the surface and the sandpaper strips have approximately the same height and have an approximately radial extent over most of the radius of the surface.
    2 2GB 2008 00191 U3
    For a more stable and good sanding of a surface, the sandpaper blanks are distributed polar and evenly around the surface of the grinding wheel, so that the sandpaper blades here cover most of the radius of the surface, which means that most of the surface of the grinding wheel can be used for grinding.
    The fact that the surface has an increasing height from the inside of the surface of the surface means that the abrasive disc will feel very stable, since it is the center part of the abrasive disc which first abuts the surface that is desired to be sanded.
    Around the center part of the grinding wheel there will be no large lateral forces pulling the grinding wheel across the surface, and it will therefore be easy to hold the grinding wheel towards the surface.
    If larger areas are to be sanded, it will also be advantageous for the surface to have increasing height from the periphery of the surface, since when abutting a surface it is first sanded around the center part of the grinding wheel, after which the grinding will spread outward, depending on the pressure applied. the grinding wheel. This means that large swinging arm movements are not required to get a surface ground.
    When grinding recesses / countersinks, the center part of the grinding wheel is placed down over recesses / counters, which means that the sandpaper blanks towards the middle of the grinding wheel will penetrate into recesses / countersinks, while the remaining part of the sandpaper blanks will sharpen the edge areas around recesses / submerges.
    It is possible with a grinding wheel according to the present invention to grind on profile iron (I, H and U), as well as, for example, grinding recessed joints in floors.
    Because the sandpaper strips are mounted predominantly perpendicular to the surface of the disc, it is possible to make better use of the sanding strips of the sandpaper strips than is the case for sandpaper pieces which are deliberately placed with large overlaps. Thus, a grinding wheel according to the present invention has a longer life than the commonly known flat or annular grinding discs.
    3 3DK 2008 00191 U3
    Furthermore, with a gap between the sandpaper blanks, a better abrasive effect is obtained, as the spaces help to transport sanded material away from the sandpaper blanks, whereby the sanding part of the sandpaper blanks has a better abrasive effect because they are not filled with sanded material.
    Instead of mounting the sandpaper blanks so that they have a radial extension over most of the radius of the surface, the sandpaper blanks can be mounted relative to the direction of rotation in a rearwardly curved arrangement.
    To make the grinding wheel more flexible and soft to use, the sandpaper strips are slotted inward against the surface, so a number of grinding strips are formed. Alternatively, sandpaper strips consist of a number of sandpaper strips. In both cases, it is possible to grind angular, curved surfaces, as abrasive strips or sandpaper strips may give way and wrinkle each other, thereby better following the surface.
    The abrasive properties of the sandpaper blanks can be improved by supporting the sandpaper blades with a number of support brushes which are also mounted predominantly perpendicular to the surface of the disc. The support brushes are placed just behind the sandpaper blades so that they support the sandpaper blanks, thereby holding the abrasive portion of the sandpaper blades against the surface to be sanded.
    The support bristles also ensure that the sandpaper strips will never bend at the foot and lie back over the abrasive disk surface. An advantage is that there is a certain distance from the surface of the abrasive disc to the surface that is desired to be abraded, so that the abrasive material can be carried away and to reduce the risk of the abrasive disc's surface coming into contact with the abrasive surface.
    The number of rows of support brushes can vary, depending on how much support the sandpaper strips need. This means, for example, that there may be three rows of support brushes behind each of the sandpaper strips.
    In one embodiment of the invention, the support brushes have the same height from the periphery of the surface, which results in a uniform plaster pressure.
    4 4GB 2008 00191 U3
    The abrasive disk may be manufactured to be a molded unit with sand-paper blanks and support brushes. This means that when either the sandpaper strips or the support brushes are worn, the entire grinding wheel is replaced.
    Alternatively, the abrasive disk may be formed in separate portions where the abrasive disk is provided with apertures for receiving the sandpaper strips and / or the support brushes. The openings for recording the sandpaper strips can be sub-channel, and the openings for recording the support brushes can be holes. The sandpaper strips and / or support brushes can subsequently be glued or molded into these openings.
    However, when using the abrasive disk for grinding, for example, edging surfaces, some sandpaper pieces may tear or wear faster than others. It is therefore advantageous that sandpaper strips and / or support brushes are arranged to be individually replaceable.
    In order to be able to replace sandpaper pads and / or support brushes, they can be attached to the surface of the grinding wheel with one of the following solutions: - Sand paper pads and / or the support brushes are fixed in a list placed in a preferably radial groove in the surface of the grinding wheel.
    The sandpaper strips are fixed in a preferably radial groove in the surface of the grinding wheel and the support brushes are fixed in holes in the surface of the grinding wheel.
    The groove is typically formed with an inward-facing side that prevents the edge or the edge of the sandpaper blanks from being released from the groove. To ensure that the edge portion of the moldings and / or sandpaper blanks remains in the groove, the surface of the grinding wheel must be formed with a locking means so that the molding or sandpaper blanks cannot be thrown out of the groove due to the centrifugal force as the grinding wheel rotates.
    Such a locking means may be an o-ring located in a groove on the circumferential edge of the abrasive disk, a spring plate lying below the strip and thereby holding the strip in the groove, or a screw or the like holding the strip down into the groove.
    In an alternative embodiment of the invention, sandpaper strips and support brushes are attached in a common foot, which means that it is possible to replace a sandpaper item and associated support brushes at one time. Furthermore, this foot may be designed so that it is subsequently possible to replace the sandpaper blank and thereby reuse the foot.
    Instead of abrasive paper blanks and / or brushes that are interchangeably attached to the surface of the disc, other blanks may alternatively be used with the abrasive disc. It can be, for example: - steel brushes, for example for cleaning a metal surface - scouring brushes, for example for floor cleaning - onel brushes, for example for rough grinding of surfaces.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in greater detail in the following with reference to the drawing, in which: FIG. 1 is a plan view of a grinding wheel according to the invention; and FIG. 2 is a sectional view of a grinding wheel according to the invention.
    In FIG. 1, a grinding wheel 1 is shown having a surface 2 to which a plurality of sandpaper blanks 3 are attached and having a radial extension over most of the radius of the surface 2. Behind each sandpaper blast 3, the grinding wheel is provided with a series of support brushes 4.
    The number of sandpaper blanks 3 and rows of support brushes 4 may be arbitrary. In the illustrated embodiment of the invention, there are eight sandpaper blanks with associated single brush brush supports 4.
    In FIG. 2, the abrasive disc 1 is shown with two sandpaper blanks 3, which are slit, so that the sandpaper blanks 3 are divided into a number of abrasive strips 5. The sandpaper blades 3 are attached to the abrasive disk 1 surface 2, which has an increasing height from the inside of the surface 2 behind the sandpaper blades 3. are provided support brushes 4 which have a uniform height whereby the plaster pressure will be uniform.
    权利要求:
    Claims (6)
    [1]
    A grinding disc (1) comprises a circular disc rotating about a central center axis and having a surface (2) to which edge portions of a plurality of sandpaper blanks (3) are attached, such that the sandpaper blades (3) are mounted predominantly perpendicular to that of the disc. surface (2), characterized in that the surface (2) has increasing height from within a periphery (6) of the surface (2) and that the sandpaper strips (3) have approximately the same height and have an approximately radial extension over most of the radius of the surface (2).
    [2]
    Abrasive disc (1) according to claim 1, characterized in that the sandpaper strips (3) are slotted inwardly against the surface (2).
    [3]
    Abrasive disc (1) according to claim 1, characterized in that the sandpaper blanks (3) consist of a plurality of sandpaper strips.
    [4]
    Abrasive disc (1) according to any of claims 1-3, characterized in that the sandpaper strips (3) are supported by a number of support brushes (4) which are also mounted predominantly perpendicular to the surface of the disc (2).
    [5]
    Abrasive disc (1) according to any one of claims 1-4, characterized in that the sandpaper strips (3) and / or the support brushes (4) are arranged to be individually replaceable.
    [6]
    Abrasive disk (1) according to claim 5, characterized in that the sandpaper belts (3) and the support brushes (4) are fixed in a common foot.
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    同族专利:
    公开号 | 公开日
    DK200800191U3|2008-12-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2009-11-27| UBP| Utility model lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    DK200800191U|DK200800191U3|2008-10-10|2008-10-10|Sanding disc with sandpaper blanks|DK200800191U| DK200800191U3|2008-10-10|2008-10-10|Sanding disc with sandpaper blanks|
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