JPH06504000A - Flexible sanding/deburring head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention Flexible sanding/deburring head Technical field 11th stand 1j Flexible abrasive sheet with skip cuts in fan-shaped orientation Sandin, formed by coalescing multiple strips of material together The deburring head is well known and commonly referred to as a "star head". vinegar The rotational speed and/or skip cut when the head is hoisted Wood sanding and metal streamers, depending on the composition of the strip sheet material It is widely used to perform Tori no Sakuho.

A starhead is a long, thin strip of suitable abrasive material, such as supplied as a roll. First, make a parallel skip cut extending in the direction of the potato, then make a long and narrow skip cut. Cut the strip transversely into pieces of length corresponding to the diameter of the head to be formed. Form another strip. Accompanying this forming operation, the center position installation involves making holes individually. 0 separate strips are formed, each forming a separate strip, these are Continue mounting until a sufficient number of strips are assembled to obtain a disk-like planar shape. are located in a fan-shaped orientation with the holes aligned with each other and the edges of adjacent strips The mounting is done so that they are stacked one on top of the other in a direction that extends annularly from the hole. , the assembled strips are assembled on a mandrel, and then the mounting is done through the holes. are joined by a grommet that closes the

The disadvantage of star head is that it is expensive to manufacture compared to the flexible material it is made from. It also has the advantage of being relatively rigid. Furthermore, the rigidity of the star head will decrease with use. increases as the diameter decreases due to edge wear; The star head is suitable for sanding contour surfaces for a relatively short period of time. It disappears.

” 1st IJ The present invention provides an improved head for sanding and/or deburring operations. More specifically, flexible sanding has advantages compared to traditional star heads. /Aimed at the deburring head.

According to the invention, the flexible sanding/deburring head comprises one or more head units. Formed from a knitted fabric, this head unit has an interlocking hole with a central mounting hole. The mounting is connected to the connecting part and the connecting part, and the mounting has a protrusion of 3 m or more extending approximately radially from the hole. A plurality of thin sheets of flexible abrasive material cut preferentially by a die to form sections. It has sheets that are juxtaposed. The protrusion is preferably attached uniformly in an annular manner from the hole. , and define a substantially V-shaped or wedge-shaped area of uniform size.

These areas are preferably cut out and open radially outward of the connection. . Each protrusion is divided into parallel fingers, and the inner ends of these fingers are Connected to the connecting part, the outer end is attached to an arc of a circle whose center coincides with the center of the hole. located along the Said protrusions and regions of adjacent sheets preferably overlap each other. is consistent with

Brief description of the drawing The nature and mode of operation of the invention will be better understood from the following detailed description, taken in conjunction with the accompanying drawings. It becomes even clearer.

I211 attaches the sanding/deburring head of the present invention to a rotary power tool. FIG. 2 is an exploded view for explaining one mode in which

FIG. 2 is a plan view of the star head.

FIG. 3 is a top view of a sanding/deburring head formed in accordance with the present invention. Ru.

Qi4 is an exploded perspective view of the head shown in FIG. 3.

1i15 indicates another sanding/deburring head configuration.

Figure 6 shows yet another sanding/deburring head configuration using two abrasive sheets. FIG.

FIG. 7 is an exploded perspective view of the head shown in FIG. 6.

Figure 8 shows yet another sanding/deburring head configuration using four abrasive sheets. FIG.

L1 Emperor 11 Referring first to FIG. 1, a flexible sandy constructed in accordance with one embodiment of the present invention is shown. The deburring/deburring head is attached to assembly 16 for illustrative purposes only. Thus, the rotatable output shaft of the known manually pneumatically driven tool 14 In other words, III! 1 #12. sanding/ba The term ``driving'' refers to the characteristics of the sheet material used in its manufacture and the time during which it is driven. Made of flexible abrasive sheet material that can perform a wide range of abrasive operations depending on the rotational speed. It is used to mean the head.

Figure 2 shows a well-known conventional type of sanding head known as a "star" head. A deburring head 20 is shown. Star heads are typically longitudinal A flexible abrasive material having mutually parallel skip cuts 22 extending in the width direction. into several separate strings whose length corresponds to the diameter of the star head to be formed. This is typically done by forming the lip 24. For forming the strip 24 Concomitantly, each strip 24 has longitudinal and widthwise longitudinally extending mountings. pores are formed. The star head 20 has a certain sufficient number of strips 24 laminated together. The mounting process is continued until the holes are removed until a nearly disc-shaped planar shape as shown in Figure 2 is obtained. aligned and abrasive surfaces are oriented in a common direction and extend longitudinally to each other. one at a time, with adjacent edges 24a positioned in an overlapping manner. It is assembled by stacking a group of strips 24. v! Indicated by the same symbol A strip 24 of the same configuration as was then placed over the first group, but with the abrasive surface of the first group. The first and second groups are stacked with the polished surfaces facing in opposite directions. A stack of strips formed by the strips 24 of the ring portion 26a , 26b, permanently assembled by metal grommets. Rin The attachment of each strip extends through a hole and is machined into ring portion 26b. mechanically coupled. Individual assemblies or head units, typically of the type described above. The common attachment extending in the axial direction through the center hole 26c of each grommet is By fixing the assembly to the shaft or drive shaft, for example with adhesive, the axial ends can be permanently assembled in axially aligned relationship abutting each other.

For a typical commercially available star head of conventional 4 inch diameter of the type previously described. , the strips 24 each have a length of 4 inches and a radius of about 1/16 inch; The first and second groups of strips each have seven strips, so each event assemblies or head units of one assembly or head unit joined together by a common grommet. It has four separate strips of abrasive material.

A stackable sanding/deburring head formed according to a first type of the invention is , shown generally as 10, and four sheets 38a of a suitable relatively thin flexible material. Illustrated in r113.4 as formed by ~38d. these For installation in the upper middle position, the seat has connection parts 40a to 40d equipped with holes 42a to 42d. and each attachment in uniform annularly spaced relation connected to each connection. Attached are a plurality of protrusions 44a to 44 extending approximately radially with respect to the holes 42a to 42d. It has a shape that keeps d constant. Adjacent protrusions 44a to 44d are basically aligned. [16a to 46d] of various sizes work together to make one constant, and these inclined castles are polished. It is preferably notched to allow material to be removed therefrom. Projections 44a to 44d am is divided into mutually parallel finger-like parts 48a to 48d, and these fingers The shaped portions are free from each other over their entire length, with relatively inner ends 50a-5. 0d is connected to each of the connecting parts 40a to 40d, and is connected to the relatively outer end 52a. - 52d, basically, the center of each installation matches the center of the hole 42a - 42d. It is meant to be located along the arc of a circle.

As in the case of conventional star heads, in the case of the grinding wheel of the present invention, the seats 38a-3 8d typically has an abrasive surface 54 and a relatively non-abrasive surface 56. Usually cut from a suitable abrasive sheet material, the sheet material may be woven or other formed from a suitable carrier material, the carrier material having an abrasive material on the 11 abrasive surfaces. are attached to form a Sheets 38a-38d are shown in FIG. the first and second groups of sheets, such as the group of sheets 38c, 38b and the sheets 38c, 38b; 8d and the w4 contiguous sheets of the first group. The abrasive surface of the abrasive surface of the adjacent sheet of the second group! Finger in the opposite direction from the first side facing. That is, the 11 abrasive surfaces of the sheets 38a and 38d are The sheets 38b, 31 have mutually opposite ends facing in the axial direction. The abrasive surface of 1c is each GITCO 8a.

The sheets 38b, 38b are disposed in facing relationship with the relatively non-abrasive surfaces of 38d. The non-abrasive surfaces of 3[1c are arranged in facing relationship with each other. of each group The number of sheets may vary as desired, but a header with two sheets for each group is recommended. preferred.

In the embodiment of Figure 3.4, the sheets 3[1a-38d are ring-shaped The parts 60a and 6Qb are joined by a normal metal grommet. together to form one assembled head unit. Each ring portion 80a is The attachment extends through the holes 42&~42d and the sheets 38a~ in a juxtaposed or stacked relationship. For the purpose of clamping 3ad, ring 11! mechanically joined to sob There is. The means used to assemble sheets 38a-8d in a stacked relationship are described herein. It does not limit the invention.

When assembling the sheets 313a to 38d, the protrusions 44a to 44d of adjacent sheets [16a to 46d should be aligned with each other. That is, the protrusion 44a has a region 46b, region 46b is aligned with protrusion 44c, and protrusion 44c is aligned with region 4 6d. Preferably, the projections measured in the lateral direction of the finger portions 48a-4[1b] The width of the portions 44a to 44d is determined by the width of the outer light gs52a to 52d of each finger-like portion. It is basically equal to the width of @46a-45d between adjacent protrusions measured by By making the sheet squid or larger, as best shown in Figure 3, The protrusion is located at the adjacent sheet's IFJ&! bridging regions.

Figure 3.4 shows a 4-inch diameter sheet formed by four sheets according to the present invention. The head of the chi is illustrated, and each sheet has six uniformly sized protrusions and six bonds. a cutout area of uniform size and a V-shaped or wedge-shaped configuration. . For a head of this size, the height of the finger-like portions 48a to 413d is 4a to 44d, or slightly larger than this, formed from each protrusion. The number of f:I'l-shaped parts depends on the polishing work to be performed, but is usually 4 to 7. be.

Figure 6.7 shows another preferred type of head lo' having a diameter of, for example, 4 inches. A head 10' is shown, and in this head 10', there is a head 10' corresponding to the head 1G. Elements are designated by the same number followed by a dash (').

In particular, the head 10' has an abrasive surface 954'' and a relatively non-abrasive surface 56'. 2N sheet 38a'' cut from a suitable abrasive sheet material with b'. The abrasive surface of these sheets is preferably When the heads are assembled, they are arranged so that they are oriented in the same direction or in a common direction. Ru.

Seat 38a'' and core ab'' are mounted in the central position using a series with holes 42a' and 42b'. '@ parts 40a　'', 40b　'' and their respective connections 14!40a　', 4[ 1b' so that each attachment extends generally radially from the hole. The plurality of protrusions 44a' and 44b' are cut out so as to be uniform. adjacent The protrusions 44a' and 44b' have cutout areas 46 of basically uniform size. a′, 46b′.

The protrusions g44a', 44b'' are lII number of parallel finger-like parts 48a', 48b. ', and the relatively inner ends 50a', 50b'' of these finger-like parts are , connected to the respective connecting portions 40a', 40b', and relatively outer end portions 52a'' , 52b' are basically installed through the holes 42a", 42b" It is preferably repositioned so that it follows the arc of a circle whose center coincides with the center of the circle. fingers 48a', 48b'' are protrusions 44a', made of paper or cardboard, more or less From a compressible material, in order to control the degree of deflection of 48a = , 48b-, The mounting with the desired axially extending cutout is the socket 80, shown in FIG. A plurality of individual heads of the type exemplified in No. 4 are described above for conventional star heads. In much the same way as above, the common mounting is with the axial ends abutting each other. is permanently attached by suitable adhesive onto the li 11 m 100 as desired An alternative mounting configuration is shown adapted to form a composite head with an axial length of ing.

Copy of amendment (N translation) submission form (Patent Law Article 184-7, Paragraph 1) April 1993 23rd

Claims (1)

[Claims] 1. A flexible sander that is removably attached to a power source so that it rotates around its axis. a deburring/deburring head comprising a plurality of juxtaposed sheets of flexible abrasive material; each sheet includes a connecting portion with a mounting hole at a central location and a connecting portion connected to the connecting portion. connected to form at least three protrusions extending generally in the positive direction from the mounting hole. The protrusion is annularly spaced from the mounting hole and has a diameter extending from the mounting hole. forming a notch area of essentially uniform size opening outward in the direction, and forming a cutout area of each said projection; includes a plurality of generally parallel fingers having longitudinally medial and lateral ends; The inner end is connected to the connecting portion, and the protrusion of one of the sheets is then connected to the adjacent a head adapted to be aligned with the cutout area of one of the sheets. 2. the width of the protrusion measured in the lateral direction of the finger at the outer end of the finger; basically equal to the width of the region measured between the adjacent protrusions, or The head according to claim 1, wherein is larger than this. 3. Each of the sheets has six protrusions and six cutout areas, and each sheet has six protrusions and six cutout areas. 3. A head according to claim 2, wherein the head is formed by four of said sheets. 4. The finger-like portion of each protrusion is located between the inner and outer ends thereof. The head according to claim 1, wherein the head is not bonded. 5. 2. The head according to claim 1, wherein the notch area is V-shaped. 6. The protrusion of one sheet then bridges the cutout area of the adjacent sheet. and the finger-like portions of the protrusion are mutually connected between the inner and outer ends thereof. The head according to claim 1, which is unbonded. 7. The name of the sheet includes an abrasive surface and a relatively non-abrasive surface; The sheets are arranged in a first group and a second group of one or more sheets, and the sheets are arranged in a first group and a second group of one or more sheets, and The abrasive surface is oriented in the opposite direction to the abrasive surface of the second group of sheets. Head as described in section. 8. the length of the finger-like portion measured between the inner and outer ends thereof; at least equal to the width of the protrusions, and the fingers of each protrusion are at least equal to the width of the protrusions; Claim 2, wherein the inner end and the outer end are not connected to each other. head. 9. Grommets extending through the mounting holes in each sheet hold the sheets together in a stacked manner. 9. The head according to claim 8, wherein the head is clamped at the clip. 10. 9. The head according to claim 8, wherein the notch area is V-shaped. 11. four said sheets, each said sheet having an abrasive surface and a relatively non-abrasive surface; an abrasive surface, the sheets as a first pair and a second pair of adjacent sheets. the abrasive surfaces of the first pair of adjacent sheets are arranged such that the abrasive surfaces of the first pair of adjacent sheets 11. The head of claim 10, wherein the head is oriented in a direction opposite to the abrasive surface of the head. 12. Each of the sheets has six of the protrusions and six of the cutout areas. The head according to claim 11. 13. A flexible sun that is removably attached to a power source for rotation on an axis. Dinke/deburring head comprising a plurality of juxtaposed sheets of flexible abrasive material. each sheet has a connecting portion with a mounting hole at a central location and a connecting portion having a mounting hole at a central location; at least three protrusions extending substantially radially from the connected mounting holes; The protrusion is annularly spaced from the mounting hole and has an essentially uniform shape. forming a notched region of a size, each said protrusion having a radially inner end and an outer end. a plurality of generally parallel fingers with inner ends connected to the connecting portion; , the protrusion of one of the sheets is then connected to the notch of one of the adjacent sheets. and the fingers of the protrusion are aligned with the inner and outer ends thereof. Heads connected to each other by skip-cutting the protrusion in between . 14. A claim in which the finger-like portions of the protrusion are not connected to each other near the outer end. The head according to item 13. 15. The finger-like portions of the protrusions are mutually free from each other near the inner and outer ends. 15. The head according to claim 14, which is a combination. 16. the connection of one of the sheets inwardly of the inner end of the finger-like portion; a washer placed on the section, and a stable extending through the washer and the sheet. the sheets are secured together, and the washer is inserted into the mounting hole of the sheet. 14. The head of claim 13 having aligned mounting holes. 17. Claims: said head has two said seats and one said washer; 16. The head according to item 16. 18. each said sheet having an abrasive surface and a relatively non-abrasive surface; the sheets are arranged with their abrasive surfaces oriented in a common direction, and the washer A head according to claim 17 that engages a non-abrasive surface of one of said sheets. Do. 19. The finger-like portions of the protrusion are adjacent to the outer end portion and are not coupled to each other. The head according to claim 18. 20. The width of the protrusion measured in the lateral direction of the finger is the width of the protrusion at the outer end of the finger. basically equal to the width of said notch area measured between adjacent protrusions in 20. The head according to claim 19, which is a squid or larger. 21. comprises four said sheets, each said sheet having an abrasive surface and a relatively non-abrasive surface. an abrasive surface, each sheet comprising a first pair of adjacent sheets and a second pair of adjacent sheets. and the abrasive surfaces of the first pair of adjacent sheets are arranged such that the abrasive surfaces of the first pair of adjacent sheets are The sheets of each pair are oriented in the opposite direction to the abrasive surface of the separated from each other by at least one washer that engages an abrasive surface; The washer has a mounting hole aligned with the mounting hole of the sheet. The head according to item 13. 22. The sheet and the washer are brought into a laminated relationship by staples passing through them. 22. The head according to claim 21, wherein the head is fixed to a. 23. The finger-like portions of the protrusion may be unconnected to each other at the outer end. The head according to claim 22. 2. The area is opened outward in the longitudinal direction of the mounting hole of the seat by the notch. Claims 13, 14, 15, 16, 17, 18, 19 formed to , 20, 21, 22, 23 or 24. 25. A flexible sun that is removably attached to a power source for rotation about an axis. Dinke/deburring head comprising a plurality of juxtaposed sheets of flexible abrasive material. each sheet has a connecting portion with a mounting hole at a central location and a connecting portion having a mounting hole at a central location; At least three protrusions extending substantially longitudinally from the connected mounting holes are formed. The protrusion is annularly spaced from the mounting hole, and the protrusion is annularly spaced from the mounting hole. forming an essentially uniformly sized cutout area that opens radially outward; the section includes generally parallel fingers with radially inner and outer ends; The side edges are connected to the connecting portion, and the protrusion of one of the sheets is connected to the next adjacent one. aligned with the cutout area of one of the sheets; at least one washer above the connecting part of the seat, and the washer and the sheet. the washer is secured together by a stable extending through the Head with mounting holes aligned with the mounting holes of the head. 26. Two said sheets each having an abrasive surface and a relatively non-abrasive surface. the abrasive surface of one said sheet is abrasive surface of the other said sheet. the washer is arranged to engage a non-abrasive surface of the one sheet; 26. The head of claim 25, wherein the head is mated to a non-abrasive surface of the sheet. 27. comprises four said sheets, each having an abrasive surface and a relatively non-abrasive surface. surfaces of the first pair of sheets, arranged as the first pair of adjacent sheets and the second pair of adjacent sheets; The abrasive surfaces of the adjacent sheets are the same as the abrasive surfaces of the second pair of adjacent sheets. Oriented in opposite directions, the washers are arranged between the first and second pairs of adjacent sheets. 26. The head according to claim 25, which is disposed therebetween.