JPH01289671A - Sanding wheel - Google Patents

Abstract

PURPOSE: To widely cope with workpieces of various shapes by removably fitting an abrasive strip. CONSTITUTION: An abrasive strip contour-formed according to the shape of a workpiece 11 is removably fitted to the outer periphery of a cylindrical body 48 to cover it by outer peripheral rings 23, 24, thereby workpieces 11 of various shapes can be ground by a single sanding wheel 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to sanding
rations), and more specifically its sanding wheels.
regarding heel).

[Conventional technology]

Conventional polishing and sanding equipment includes slotted abrasive wheels, dressing tools for polishing gears, diamond-coated fan saws, and other diamond-coated abrasive tools to polish the article into the desired shape. It has tools with a specific shape to assist in this process. For example, sanding belts that are relatively easy to replace are also known. However, these methods are generally unsuitable for processing surfaces with specific contours, and have a short lifespan because they are easily clogged with polishing powder. Abrasive wheels and discs have also been used, but these have similar rJI problems inherent in the sanding process, primarily with abrasive powder clogging reducing the life of these tools. Disks with a contoured outer periphery have also been used, some of which have slots or open areas for evacuation of abrasive powder; The problem is that it is difficult to repair due to the wheel structure being made of hard material with a contour.

Furthermore, as the units described above are used, the sander's profile changes due to abrasive powder adhering to its surface, requiring repair or replacement of the entire wheel or belt. Abrasive sanders with flaps are also used, but there is a problem in that they cannot always accurately follow the contour of the surface to be processed.

[Problem that the invention seeks to solve]

The present invention has been made to solve at least one of the above-mentioned problems, and its purpose is to easily adapt to various shapes of surfaces to be treated, to reduce clogging caused by abrasive powder, and to provide a long-lasting To provide a sanding wheel that has a long life and can be manufactured at relatively low cost.

[Means for solving problems]

According to the present invention, in a sanding wheel comprising a substantially cylindrical body having first and second end faces and a cylindrical outer peripheral surface formed between the two end faces, The above-mentioned sanding wheel, characterized in that it is provided with an abrasive strip provided around and substantially covering the outer circumferential surface of the contour-molded body, and an attachment/detachment means for easily attaching and detaching the abrasive strip. is provided.

[For production]

A sanding wheel configured as described above can be manufactured at low cost and can be used in many ways. Additionally, since the contoured abrasive strip is removable and replaceable, the sanding wheel can accommodate a wide variety of workpiece shapes. Furthermore, the sanding belt does not need to be removed from the machine to which it is attached when replacing its sanding surface. Moreover, since the structure of the sanding wheel is relatively simple, it is less likely to be damaged, and even if it is damaged, it is easy to repair.

Also, with the above structure, the abrasive strip can be vacuum formed to match a given desired shape;
By attaching an abrasive material to this, a sanding surface having a desired contour shape can be formed. The regions of the contoured abrasive strip to which the abrasive material is attached are partially bulged and separated from each other by irregular portions, thereby providing a plurality of identically shaped bulges on one abrasive strip. It is formed like this.

〔Example〕

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of the sanding wheel attached to a machine that uses it, FIG. 1A is a sectional view taken along line IA in FIG.
2 is a perspective view showing the general structure of the sanding wheel; FIG. 3 is a sectional view taken along line 3-3 in FIG. 2; and FIG. 4 is a sectional view taken along line B. FIG. 5 is a cross-sectional view of the abrasive strip taken along line 5--5 in FIG. 4; FIG. 6 is a modification of the abrasive strip; FIG. 5 is a cross-sectional view similar to FIG. 5 of the embodiment.

The preferred embodiment of the present invention comprises a sanding wheel 21 and a contoured abrasive strip 31 removably and replaceably mounted on its outer periphery to easily accommodate workpieces of different shapes. It looks like this.

In FIG. 1, a sanding wheel 21 is attached to the processing device 10.
The attached state is shown in a perspective view.

The processing device 10 includes a roller 1 that holds a workpiece 11 and guides it appropriately along a path indicated by an arrow F.
Two sets are provided. sanding wheel 2
1 is mounted on a motor 20, and when the motor 20 operates, the sanding wheel 21 rotates. During use, a movable support 17 on which a motor 20 is mounted is pivoted on the hinge 15, and adjustment means 1, which in this embodiment consist of screws or other means, are mounted.
It is adjusted by 8 to obtain 2. By using suitable adjustment means 18, the angular position of the sanding wheel 21 relative to the workpiece 11 can be precisely adjusted along the direction indicated by arrow B to the desired angle.

The sanding wheel 21 can be raised and lowered along the track 14 as shown by arrow A by adjusting the slidable support 16 to which the movable support 17 is attached. Lateral movement of the sanding wheel 21 may be achieved by means of sliding the motor 12 along the movable support 17 as indicated by arrow C.

FIG. 18 shows a mechanism for raising and lowering the sanding wheel 21. Specifically, the track 14 has a slot 38 that receives a slidable support 16, and the support 16 has a projection 3 that is substantially identical to the slot 38.
9 are provided, by which said slidable support 16 is slidably and securely held along track 14. After the slidable support 16 is set at a desired position in the vertical direction, the screw 46 is inserted into the screw hole 50 provided in the track 14, and its tip is brought into contact with the protrusion 39 of the slideable support 16. Tightening the locking device holds the slidable support 16 in position.

FIG. 1B shows a mechanism for supporting the sanding wheel 21 so as to be movable in the lateral direction indicated by arrow C. The movable support 17 is shown in FIG. 1A and has a slot 44 shaped much like a track. Motor 20 is attached to sliding block 43 by fixing means 41 and 42.

Although screws are used as the fixing means 41 and 42 in this embodiment, other fixing means with high reliability may be used instead.The sliding block 43 is a movable support 17. The motor 20 has a projection 45 which is substantially identical to the slot 44 of the motor 20 so that the motor 20 is slidably and securely held along the movable support 17.

When a locking device such as a screw 47 inserted into a screw hole 49 provided in the movable support 17 and whose tip abuts against the protrusion 45 of the sliding block 43 is tightened, the sanding wheel 21 is moved to the desired side. locked in one position.

A perspective view of the sanding wheel 21 is shown in FIG. The basic configuration of the sanding wheel 21 is as follows:
It consists of a substantially cylindrical body 48 having a top surface, a bottom surface and a cylindrical outer circumferential surface. A hole 22 is drilled along the central axis of the body 48 to facilitate attachment to an armature or shaft. Outer rings 23 and 24 are attached to the outer peripheries of the top and bottom surfaces of the body 48 by fasteners such as screws 100 and 101, respectively.As shown in the figure, the outer rings 23 and 2
4 are slightly cut away to form slots 25 and 26. Further, the body 48 is provided with a slot 28 and a plate 27. The function of the slot 28 and plate 27 is shown in more detail in FIG. Prior to using the sanding wheel 21, a contoured abrasive strip 3 as shown in FIG.
1 from the slots 25 and 26 to the outer rings 23 and 2
4 and the outer peripheral surface of the body 48 as shown by the arrow mark in the figure. When the contoured abrasive strip 31 is pressed against the outer periphery of the body 48 in close proximity to the plate 27, the abrasive strip abuts the plate 27 and is held in position by the plate 27 during the sanding process. The above contoured abrasive strip 13
can be removed by pushing down the plate 27 and taking it out along the arrow E.

FIG. 3 is a cross-sectional view of the sanding wheel 21 taken along line 3--3 in FIG. A slot 28 is formed from the outer peripheral surface of the body 48 toward the central axis, and the plate 27 is housed in the slot 28 . Additionally, a hole 29 is formed within which a spring 30, such as a coil spring, is housed to prevent movement of the contoured abrasive strip relative to the body 48 during use.
27 is biased to hold it in a fixed position. The figure shows the positions of the plate 27 and the spring 30 in a state where the plate 27 is pushed most toward the center of the body 48. When the plate 27 is released, it is pulled out to the dotted line 27'' in the figure, but it cannot be pulled out beyond that point because it is blocked by the outer rings 23 and 24.The outer rings 23 and 24 are pulled out along the outer periphery of the body 48. The abrasive strip has a lip extending therethrough to define a slot for inserting the abrasive strip.

FIG. 4 is an enlarged view showing the detailed structure of the contoured abrasive strip 31. Contoured polishing strip 3
1 is a bulging portion 33.33 that is composed of a flat portion 32, a bulging portion 33 pushed outward from the flat portion 32, and a slot portion 38 left between the bulging portion 33.33.
The slot portions 38, 38 between the
It plays a very important role in preventing shavings, chips and other abrasive debris from becoming clogged during the sanding process of the workpiece. Slot portion 38.
38 creates air agitation to prevent undue stress on the surface of the contoured abrasive strip and forms an outlet for abrasive debris, thereby achieving a self-cleaning function of the sanding wheel. At the same time, the wear is reduced. 11! In the event of wear, the contoured abrasive strip 31 can be easily removed from the sanding wheel 31 and replaced with a new one.

FIG. 5 is a cross-sectional view of contoured abrasive strip 31 taken along line 5--5 in FIG. Contoured abrasive strip 31 is constructed from a sheet of plastic or other formable material and includes an abrasive material such as sandpaper. By contouring the plastic sheet, an abrasive strip 31 with a foot 32 and a bulge 33,33 is obtained. The upper surface 34 of the bulge 33 is formed into the desired shape to match the contour of the molding piece or other material to be sanded. The abrasive material 36 is cut to the size and shape of the upper surface 34 of the bulge 33 and is attached to the upper surface 34 with an adhesive 35. As a result, a surface polished by the abrasive material 36 having a contour matching the surface shape of the workpiece 11 is obtained.

FIG. 6 shows a fourth section showing a different shape from that of FIG. 5 of the upper surface of the bulge of the contoured abrasive strip 31.
It is a sectional view taken along line 5-5 in the figure.

Except for the reference number 37 on the upper surface of the bulging portion 33, other parts are given the same reference numbers as shown in FIG. 5. The abrasive strip 31 is contour-formed by a vacuum forming method, and the shape of the upper surface to which the abrasive material 36 is attached is as shown in FIG. 5 (whether it is concave as shown in FIG. 6 or convex as shown in FIG. Contoured abrasive strip 31
The key to the operation and practicality of the contoured abrasive strip 31 is that it can be manufactured inexpensively and with great accuracy; the sanding wheel 21
The user should be able to easily attach, detach, and replace the device as needed. The contoured abrasive strip 31 is
Because it is made from plastic and/or other moldable and reasonably flexible materials, the strip itself is flexible enough to damage the sanding wheel 21 during the sanding process of the workpiece 11. Not likely.

〔Effect of the invention〕

Since the present invention is constructed as described above, it is possible to provide a sanding wheel in which abrasive debris and the like are easily discharged and which has an abrasive surface contoured according to the shape of the workpiece. .

Further, according to the present invention, it is possible to provide a sanding wheel whose polishing surface shape can be easily changed without changing the wheel itself.

Further, the sanding wheel itself can be easily attached to and detached from the processing device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the sanding wheel attached to a machine that uses it, FIG. 1A is a sectional view taken along line IA in FIG.
2 is a perspective view showing the general structure of a sanding wheel, 3 is a sectional view taken along line 3-3 in FIG. 2, and 4 is a sectional view taken along line B. FIG. 5 is a cross-sectional view of the abrasive strip taken along line 5--5 in FIG. 4; FIG. 6 is a perspective view of a contoured abrasive strip used in a sanding wheel; FIG. 5 is a cross-sectional view similar to FIG. 5 in the example.

Claims (1)

[Scope of Claims] 1) A substantially cylindrical body (48
) a sanding wheel (21) comprising a sanding strip (31) provided around and substantially covering the outer peripheral surface of said body contoured to the shape of the workpiece (11); Attachment and detachment means (23, 2) by which the strip can be easily attached and detached
4) The above-mentioned sanding wheel (21) is characterized in that it is provided with. 2) The polishing strip (31) is attached to the workpiece (1).
A plurality of bulges (3) contoured to match the shape of 1).
3) and a slot part (38) formed as a non-bulging part left between them, and an abrasive material (36) is provided so as to substantially cover the surface of the said bulging part. A sanding wheel according to claim 1. 3) The sanding wheel according to claim 2, wherein the surface of the bulge (33) is formed into a desired shape to match the outer shape of the workpiece to be sanded. 4) A sanding wheel according to claim 1, wherein the contoured abrasive strip (31) is constituted by a sheet of flexible molded material having a bulge of the desired shape. 5) said attachment/detachment means comprises first and second circumferential rings attached to said substantially cylindrical body, said first circumferential ring being connected to said first circumferential ring and a first circumferential ring of said body; and the second outer circumferential ring is arranged to form a first slot between the outer circumferential surface near the end surface of the ring and the second outer circumferential ring.
the contoured abrasive strip (31) being arranged to form a second slot between the second peripheral ring and the peripheral surface of the body near the second end surface;
is inserted into the first and second slots, and is held in a fixed position by the first and second outer rings in contact with the outer peripheral surface of the body. The sanding wheel described in item 1. 6) A stopper means (27) according to claim 1 is provided to prevent the contoured abrasive strip (31) from slipping on the outer circumferential surface of the body during use of the sanding wheel. sanding wheel.