JP5064645B2 - Mounting tool with support plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a mounting tool comprising a support plate having a particularly elastically deflectable outer area and coupling means, the coupling means being eccentric for fixing the mounting tool to a machine tool. Of the type having at least one securing means arranged.
[0002]
[Prior art]
From German Offenlegungsschrift 15 77 422, an installation tool with such a support plate is known. This support plate has a support portion and an outer range that is elastically deformable and can be bent. A bush is fixed in the support plate, and a cylindrical stopper is inserted into the bush together with a separate guide ring. The plug is held in the bush by a screw connection piece. The screw connection piece is arranged on the machine-facing side of the plug and is screwed into an opening with a screw on the bottom of the bush facing the machine. A lock pin slidable in the axial direction is supported in the bush via a knurled nut.
[0003]
A plate is fixed to the end surface of the bush opposite to the machine by a fixing screw. The surface of the plate opposite to the machine has a protrusion that serves as a coupling portion. The protrusions can be inserted into the undercut opening of the polishing body or the polishing plate in order to fix the polishing body or the polishing plate to the mounting tool.
[0004]
[Patent Document 1]
German Patent Publication No. 1577422 Specification [0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a structurally simple mounting tool that has few additional members and does not require a lot of mounting.
[0006]
[Means for Solving the Problems]
According to the means of the present invention that solves this problem, the coupling means and the support plate are connected in a material-bonding manner.
[0007]
【Effect of the invention】
The invention is a mounting tool comprising a support plate and a coupling means, in particular a resiliently deflectable outer region, for fixing the coupling means to a machine tool, in particular a hand-held angle grinder. And having at least one fixing means arranged eccentrically.
[0008]
It is proposed that the coupling means and the support plate are connected in a material-free manner (stoffschluessige Verbindung). A structurally simple mounting tool can be obtained with few additional members and a small amount of mounting effort. With this installation tool, a simple, quick and comfortable installation of the polishing plate can be achieved.
[0009]
In this case, the material-bonding is not limited to the method generally classified as material bonding, such as welding, bonding, brazing, and the like, but also bonding caused by injection-molding of the coupling means by the support plate. Also means. A particularly inexpensive method for manufacturing the mounting tool, since it is possible to avoid an additional gluing or welding step and the manufacturing location essential for this, especially when the coupling means is at least partly injection-molded with a support plate. Can be achieved.
[0010]
In another configuration of the present invention, the fixing means is formed by the locking means. This allows the mounting tool to be fastened to a machine, in particular an angle grinder, particularly quickly, easily and without tools.
[0011]
The fixing means is formed by a locking notch arranged eccentrically, and this locking notch is formed in particular by a pin slidably supported against the spring element. When used to accommodate functional elements, compatibility with high-speed clamping devices with advantageous rotational moment transmission is obtained. In this case, the pins may have different cross-sectional shapes, for example circular, elliptical, triangular, square or quadrangle, as deemed meaningful by those skilled in the art.
[0012]
Furthermore, in the structure of this invention, the fixing means has the pot-shaped accommodation range (receiving part) extended in an axial direction. This advantageously protects the functional element in the event of an unintended collision with the part to be machined, and the axial extension (length) of the receiving area advantageously exceeds the coupling means of the functional element or pin. It is larger than the protruding dimension. Via the receiving area, contact over a wide surface, in particular for the functional element, can be obtained, which advantageously prevents the coupling means from being bitten into the functional element. In particular, like corundum-like particles, it is possible to prevent wear of the functional element due to the influence of particles generated by polishing. This is because the accommodation range arranged in the coupling means covers most of the functional elements. The coupling means can be reliably detached from the functional element at any time, premature wear of the functional element due to biting is avoided, and the service interval (maintenance interval) can be extended. Further advantageously, the housing range extending in the axial direction can prevent the attachment tool surface from being attached in the opposite direction when the tool is housed.
[0013]
The accommodation range may be formed integrally with the coupling means or by a plurality of parts. If the containment area is composed of several parts by the coupling means, use different materials for the coupling means and the containment area, for example metal for the coupling means and plastic for the containment area Can do. However, it is particularly advantageous for the receiving area to be integrated with the coupling means. By particularly advantageously protecting the functional element against mechanical damage, a particularly stable housing can be achieved. In this case, the accommodation range can be integrally formed with the coupling means in a particularly simple and inexpensive manner by the deep drawing method.
[0014]
If the coupling means has a centering notch arranged in the center, an advantageous centering of the mounting tool in the tool receiving part of the machine tool can be achieved. If the centering notch is formed by a through-opening, the use of a clamping nut arranged in the center of each makes it possible to achieve compatibility with widely used clamping systems.
[0015]
In a further configuration of the invention it is proposed that the support plate and the coupling means are coupled circumferentially via at least one shape coupling element. Thereby, it is possible to advantageously support the material coupling in transmitting the rotational moment, and it is possible to always obtain a reliable coupling between the coupling means and the support plate regardless of the high rotational moment.
[0016]
In this case, the shape-coupling element is preferably formed by an axially-oriented projection formed on the coupling means. This protrusion can be formed inexpensively and easily on the coupling member during the manufacture of the coupling means, especially in the punching process.
[0017]
It is further proposed that at least one area (section) of the coupling means on the side facing the machine is coplanar with the support plate. Thereby, an advantageous mounting surface can be obtained, and edge contamination can be prevented. Furthermore, on the side facing the working direction, a deep pot-like area can advantageously be provided to protect the functional elements of the clamping system.
[0018]
If the support plate is formed in an annular shape, it can be provided with a notch for attaching and removing the mounting tool to the machine tool, preferably in the central area. Through this notch, the installation tool can engage the coupling means, or in particular the unlocking element of the high-speed clamping system.
[0019]
When the support plate is provided with a surface fastener element (attachment element) for fixing the polishing plate, the polishing plate can be quickly and comfortably attached to and removed from the mounting tool. However, it is also possible to consider fixing means which are basically considered meaningful by those skilled in the art.
[0020]
Furthermore, since the hook-and-loop fastener element is formed in an annular shape, an advantageous free space (space) is obtained in the central area of the large surface as a whole for fixing the mounting tool to the machine tool and for releasing it from the machine tool. be able to.
[0021]
If the abrasive plate is likewise formed in an annular shape, access to the central functional element, in particular the unlocking element of the high-speed clamping device, can be advantageously performed without having to disengage the abrasive plate from the mounting tool. Therefore, high efficiency can be obtained. In a polishing plate over the entire surface, the central range conveys only a small circumferential speed, so it does not actually contribute to the polishing effect but rather tends to be blocked. In the annular polishing plate, clogging can be prevented by a notch provided in the central region, and energy can be saved in particular. Therefore, this type of polishing plate is particularly suitable for machine tools with limited energy available and rather low power output, especially for angle grinders operated by storage batteries.
[0022]
Other advantages are evident in the following description of the drawings. The drawings show an embodiment of the present invention. The drawings, description, and claims have a number of characteristics. Those skilled in the art can consider these features individually for purposes and make other meaningful combinations.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an installation tool with an annular support plate 10 made of rubber. The support plate 10 has an outer region 12 that can be elastically bent, and includes a bowl-shaped coupling means 14 formed of a thin plate member. The coupling means 14 has a centering notch 20 disposed in the center in the radially inner range of the support plate 10 for fixing to a hand-held angle grinder (not shown), and There are six fixing means 16a, 16b, 16c, 18a, 18b, 18c that are uniformly distributed over the circumference and arranged eccentrically.
[0024]
The radially inner area of the support plate 10 has an increased material thickness compared to the radially outer area. The material thickness of the support plate 10 continuously decreases starting from the inner diameter 32 to approximately half the annular surface diameter 34 and is kept constant starting from the half annular surface diameter 34 to the outer diameter 36. (FIG. 2).
[0025]
A support plate 10 is injection-molded around the outer periphery of the bowl-shaped coupling means 14, and thus a first portion 38 extending in the axial direction 44 of the coupling means 14 and a radius following this first portion 38. A second portion 40 extending outward in the direction is surrounded by the support plate 10. On the machine-facing side, the coupling means 14 is flush with the support plate 10 in a region 24 radially inward of the support plate 10.
[0026]
Formed on the second portion 40 of the coupling means 14 extending radially outwards is a shape coupling element 22 extending in the axial direction 52 formed by perforations, distributed uniformly over the entire circumference. The support plate 10 and the coupling means 14 are coupled in a shape coupling manner in the circumferential direction via these shape coupling elements 22. The shape coupling element 22 is formed on the coupling means 14 in a punching process. In this punching process, the coupling means 14 is punched from the thin plate. Further, in this punching process, the centering notch 20 and the fixing means 16 and 18 are formed in the coupling means 14. The coupling means 14 has the same structure as the coupling means to which the polishing means is directly attached to form, for example, a cutting disk (cutting grindstone), a polishing disk, a rough grinding disk, or the like.
[0027]
Fixing means 18a, 18b, 18c arranged between the support plate 10 and the centering notch 20 are formed by notches. These notches are uniformly distributed in the circumferential direction, are arranged in a narrow first range extending in the circumferential direction, and a wide range extending in the circumferential direction following the first range on the opposite side of the rotational direction 42. 2 ranges.
[0028]
When the attachment tool is attached to the angle grinder, the three support clamps of the high-speed clamping device of the angle grinder are engaged with the fixing means 18a, 18b, and 18c in the axial direction 44, and the attachment tool is inserted in the tool storage portion in the axial direction. Secure to. A centering notch 20 provided in the central region of the coupling means 14 is used for centering the attachment tool on the flange of the tool accommodating portion of the angle grinder.
[0029]
Between the fixing means 18a, 18b, 18c, three fixing means 16a, 16b, 16c formed by notches uniformly distributed in the circumferential direction of the coupling means 14 are provided. Each of these fixing means 16a, 16b, 16c is used for accommodating a functional element formed by a pin of the high-speed fastening device. For this purpose, the fixing means 16a, 16b, 16c each have a pot-shaped accommodation range extending in the axial direction 44. The mounting tool is drivably coupled to the angle grinder via a pin (not shown) of the high-speed clamping device, which is movably supported against the spring element. These pins lock the mounting tool into the accommodation range in the operating position and fix the mounting tool in a shape-coupled manner in the circumferential direction.
[0030]
The receiving area having a circular cross section is constructed in one piece with the coupling means 14 and itself has a closed side wall. On the end face facing away from the machine in the axial direction 44, the receiving areas have through-openings 46, 48, 50, respectively. This housing area projects in the axial direction 44 beyond the three support clamps of the high-speed clamping device. When rotating in the rotational direction 42, the three support clamps of the high-speed clamping device are therefore in the shade of the receiving area and are protected thereby.
[0031]
An annular surface fastener element 26 having hooks used to fix the polishing plate 28 is attached to the surface of the support plate 10 facing the processing direction 44. The entire surface facing the machining direction 44 is covered.
[0032]
Similarly, the polishing plate 28 arranged corresponding to the mounting tool is formed in an annular shape corresponding to the support plate 10, and is formed of a non-woven fabric on the surface facing the mounting tool, and is attached to the annular surface fastener element 30. have. The polishing plate 28 is fixed to the surface fastener element 26 of the attachment tool via the surface fastener element 30.
[Brief description of the drawings]
FIG. 1 shows a mounting tool according to the invention with a polishing plate fixed towards the processing direction.
2 is an enlarged cross-sectional view taken along line II-II in FIG.
[Explanation of symbols]
10 support plate, 12 outer range, 14 coupling means, 16a, 16b, 16c fixing means, 18a, 18b, 18c fixing means, 20 centering notch, 22 shape coupling element, 24 range, 26 face fastener element, 28 polishing plate , 30 surface fastener elements, 32 inner diameter, 34 annular surface diameter, 36 outer diameter, 38 parts, 40 parts, 42 rotating direction, 44 machining direction, 46 through opening, 48 through opening, 50 through opening, 52 direction

Claims (14)

Coupling means for fixing a support plate (10) having an outer region (12) which can be elastically bent and a bowl-shaped support plate (10) formed by a thin plate member to the machine tool. (14), and the support plate (10) is injection molded so as to at least partially cover the coupling means (14), whereby the coupling means (14) and the support are supported. In the installation tool in which the plate (10) is connected to each other,
The coupling means (14) for fixing to the machine tool;
At least one first fixing means (16) arranged eccentrically having a receiving part which houses a functional element of the machine tool and which is formed by a recess recessed to the opposite side of the machine tool ; ,
And at least one second fixing means (18) arranged eccentrically for fixing the mounting tool in the axial direction in the tool receiving part of the machine tool ,
The mounting tool, wherein the first fixing means (16) and the second fixing means (18) are formed so as to be alternately arranged on the circumference .   2. A mounting tool according to claim 1, wherein the fixing means (16) are formed by locking means.   3. A mounting tool according to claim 1 or 2, wherein the coupling means (14) has a centering notch (20) arranged in the center for centering the mounting tool.   The support plate (10) and the coupling means (14) are arranged circumferentially via a shape coupling element (22) consisting of at least one protrusion projecting to the machine tool side formed in the coupling means (14). The attachment tool according to any one of claims 1 to 3, wherein the attachment tool is joined together.   The mounting tool according to any one of claims 1 to 4, wherein the support plate (10) is formed in an annular shape.   The coupling means (14) is flush with the support plate (10) in a region (24) located radially inward of the support plate (10) and facing the machine tool. Item 5. The mounting tool according to item 5.   The fixing means (18) is formed from a notch, the notch extending along a circumferential direction of the support plate (10) and a radial direction of the support plate (10). A width is formed wider than the first range, and continues in the direction opposite to the rotation direction (42) of the support plate (10) along the circumferential direction of the support plate (10). The installation tool according to claim 5 or 6, which has a second range extending in the direction.   The thickness of the support plate (10) continuously decreases from the inner periphery to the intermediate position between the inner periphery and the outer periphery as it goes toward the outer periphery, and is constant from the intermediate position to the outer periphery. The mounting tool according to any one of the above.   The attachment tool according to any one of claims 1 to 8, wherein a hook-and-loop fastener element (26) for fixing the polishing plate is fixed to the support plate (10).   10. The mounting tool according to claim 1, wherein the hook and loop fastener element is formed in an annular shape.   The fixing means (16) according to any one of claims 1 to 10, wherein each of the fixing means (16) has a through-opening (46, 48, 50) on its end surface facing the axial direction (44) and opposite to the machine tool. The mounting tool according to item 1. The mounting tool according to any one of claims 1 to 11 , wherein the machine tool is formed as a hand-held angle grinder. The polishing plate for an attachment tool according to any one of claims 1 to 12 , wherein the polishing plate is formed in an annular shape. 14. A polishing plate according to claim 13 , wherein at least one surface fastener element (30) is provided.

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