CN101578158A

CN101578158A - Flap wheel

Info

Publication number: CN101578158A
Application number: CNA2008800021903A
Authority: CN
Inventors: 彼得·德根
Original assignee: Rhodius Schleifwerkzeuge GmbH and Co KG
Current assignee: Rhodius Schleifwerkzeuge GmbH and Co KG
Priority date: 2007-01-12
Filing date: 2008-01-14
Publication date: 2009-11-11
Anticipated expiration: 2028-01-14
Also published as: EP2099586B1; CN101578158B; PL2099586T3; WO2008083994A1; DE102007002643A1; EP2099586A1; DE102008013961B3; ES2629984T3

Abstract

The invention relates to a flap wheel, comprising a plate-shaped carrier, which can be rotatably driven about an axis and carries a plurality of abrasive flaps overlapping in a tile-like manner, wherein the abrasive flaps are fastened to a circular carrier section centered on the axis, particularly by means of gluing, wherein the abrasive flaps have a straight first edge, the lower edge, and a second straight edge abutting thereon, the outer edge, and wherein the abrasive flaps have a third edge, the inner edge, which cuts both the lower edge and the outer edge at least in the extension of the flap, wherein the outer edges of the abrasive flaps form the outer contour of the flap wheel. The invention also relates to a method for producing the same.

Description

Flap wheel

Technical field

The present invention at first relates to the geometry of a kind of grinding fin (Schleiflamell), described grinding fin especially is arranged on the emery wheel that can drive rotation with bonding mode, wherein grinds fin and has first straight limit and straight second limit adjacent with described first limit.The invention still further relates to a kind of flap wheel with plate-like supporting member, described plate-like supporting member can rotate and support this grinding fin of a plurality of watts of shape overlap joints drivingly around axis.In addition, grind fin and be fixed that especially to be bonded in described axis be on the annular support section at center.The invention still further relates to the method that is used to make this flap wheel.

Background technology

Known this flap wheel has different forms of implementation.For example patent documentation DE 295 10 727U1 have described a kind of grinding dish, are bonded with the ring-type coating that is formed by a plurality of independent grinding fins on the support section of this grinding dish.Grinding configurations of tabs in this form of implementation is trapezoidal and watt shape overlap joint.Also known a kind of flap wheel, the grinding fin of watt shape overlap joint of this flap wheel is cut into rectangle, and the advantage of this work in-process is that it can be formed by the harmless lost territory cutting of continuous band.Fin by this rectangle makes the plate-like supporting member can automatically be assembled (best ü cken), wherein grinds fin individually by being cut on being with and being arranged on continuously on the grinding dish.But be well known that the shortcoming of this grinding fin is that it forms very big load (Auftrag) owing to overlap on the wheel hub section of grinding dish.Therefore to limit the amount of the grinding band (Schleifband) of the number of grinding fin of setting and then the perimeter that restriction is arranged in emery wheel.

In order to solve the very big problem of load, patent documentation DE 200 06 127 U1 disclose a kind of grinding dish that grinds fin that has, and its geometry is a sickle shaped.The width that described grinding fin inwardly reduces has reduced the material that can cause the problem load.Because this falculate geometry have two parallel and be in particular isometric limit, this can make the harmless lost territory of special grinding fin be cut from being with.But because inner edge is a spill, be that the plate-like supporting member grinds fin by these and automatically assembled so it has defective.

Summary of the invention

The objective of the invention is to thus, a kind of grinding fin is provided, it can be formed by the band of advancing harmless lost territory cutting, has only very little material load in the interior zone of emery wheel, and can reprocess automatically.In addition, the present invention also aims to, a kind of flap wheel is provided, it can be fit to different application targets in the processing of simple and less expensive.In addition, the present invention also aims to, the manufacture method of this flap wheel is provided.

Above-mentioned purpose realizes by grinding fin as claimed in claim 1, flap wheel as claimed in claim 5 and method as claimed in claim 8.Advantageous embodiment of the present invention is described in each dependent claims.

Basic design of the present invention at first is to grind the novel shape of fin, and it is triangular in shape basically.In this " basically " expression, leg-of-mutton one or even two tops can also be cut a fritter by quilt, but it still meets the feature of " triangle ".According to the present invention, constitute leg-of-mutton limit as long as be shorter than by the limit that cut off to produce, just be enough to think triangle.In addition, leg-of-mutton limit equally also can slight bending or one-tenth corrugated.

Can realize the multiple possibility that influences the flap wheel performance by this covering (Belegung) by means of this leg-of-mutton grinding fin.In other words, the present invention mainly is the trend on the 3rd limit, and only intersect with two other limit in its virtual extension when cut angle under suitable situation on described the 3rd limit.Even these limits can have slight bending or corrugated, but when these limits all are configured to straight line, the advantageous particularly that becomes because process more convenient.

Advantageously, grinding configurations of tabs is complete triangle, is in particular right angled triangle, isosceles triangle or equilateral triangle.At one because processing is convenient especially in the preferred embodiment, one of them angle (be in particular the angle that crosses by outside and inner edge, that is be the angle that is positioned at the rear) cut one with respect to direction of rotation.This enforcement will be elaborated with exemplary description.

Thus, technical conceive of the present invention not only is embodied in the single grinding fin, but also is embodied in the flap wheel that is coated with this triangle grinding fin.At emery wheel, make first limit that especially is straight form the base, described base is arranged on the support section in process subsequently.When described outside was arranged in the perimeter of emery wheel and constitutes the outline of flap wheels with other fins, second limit adjacent with described base constituted the outside.Grind fin and have the 3rd limit, described the 3rd limit as inner edge towards wheel hub section orientation.According to the present invention, inner edge intersects with base and outside in its extension at least.

In the advantageous embodiment that evenly covers, the base of grinding fin and the angle that the outside surrounds are 90 degree, and its insole binding and outside can constitute isosceles triangle.Position angle (Legewinkel) can realize favourable grinding performance and good machining (Zerspanung) by this special form.In addition, the operation of straight side when flap wheel is set is suitable especially.This leg-of-mutton form can realize corresponding well processed.

Process in the special simple embodiment at another, fin forms isosceles triangle and is equilateral triangle in case of necessity, and its base is arranged on the plate-like supporting member and preferably downcut abreast with the base at the angle relative with the base.The advantage of this embodiment is, can guide the precut band of conduct of the feedway that is used to cover the plate-like supporting member and the then triangle of a suspension.In addition, a plurality of triangles are by common bottom hung, and described bottom is made of the side slat band (Seitenstreifen) of band.During covering, at first, the precut band of abrasive of formation is arranged under the situation on the downward-sloping external support section of supporting member on the distolateral limit of its chamfered edge, keep by the binding agent that is arranged on herein.After having carried out changing overlapping operation, downcut at the moment still by side slat band suspension fin on tape.Advantageously, be parallel to the separation that fin is carried out on the base, thereby form cut angle.

Triangle geometry shape according to grinding fin of the present invention has a series of advantage: first advantage in essence is, grinds fin and passed through the band harmless lost territory cutting that sand paper or emery cloth make and formed by continuous.In addition, cut by being with to form and correspondingly need not on the limit that is preferably outside or inner edge.It is also advantageous in that in order to cover whole support section by grinding fin watt shape overlap joint ground, a small amount of this grinding fin according to the present invention is enough on the principle.This can reduce cost.By the less orientation angle (Anstellwinkel) that a small amount of grinding fin has also realized grinding fin, this makes that grinding performance is better and helps the grinding dish to form flat configuration.Certainly emery wheel needs a large amount of fins efficiently, but described fin can bring wide variety of materials to the perimeter.

Correspondingly, its advantage is, a large amount of grinding fins can be arranged on the supporting member, have triangular shaped equally also can be no problem only produce very little load relatively in inside because triangle grinds fin.Because it is to the top of interior orientation, the shape of triangle fin can also realize a large amount of fins is installed, and need not to make these fins to construct towards the hole.Because correspondingly there is more abrasive, so a large amount of fins makes the longer service life of instrument." in a large number " expression supporting members support is ground fin more than 50 in addition, grinds fin more than 70 especially, perhaps even more than 100 grinds fin.Known ground, corresponding to the load that is produced by a large amount of grinding fins, the inclination of the outer surface of the supporting member that is provided with for fin is set can decline to a great extent more or less.

Another advantage is, and is in ground the grinding dish that fin covers by triangle, the highest and be preferably its overlay capacity in the fringe region of workspace in speed

Maximum.Thus, provide maximum materials, then be provided with less abrasive in the inside of only bearing less grinding loss (Schleifabtragung) in the position that emery wheel needs most.Improved the service life of flap wheel thus.Compare with the flap wheel that is provided with rectangular tab usually, assembled more relatively abrasive in the perimeter of disc by this coverage mode of the present invention.Can improve machinability by abrasive being accumulated in the desired position.

Another advantage is, can be adjusted in uniform material closeness (Verdichtung) on the grinding skin by covering triangle.Help flap wheel thus and act on the workpiece, thereby this has realized that suitable and controlled especially processing realizes Precise Grinding by common grinding skin.

Particularly advantageous is can regulate multifrequency nature by the length of side of grinding fin, the angle and the coverage density of lifting.Therefore can realize different types of flap wheel by these factors, have the flat grinding dish of big machining amount until basin shape or tubaeform grinding dish etc.The variation of grinding size, number and the angle of coverage of fin by triangle can form the have a large amount of fin projections relative flat flap wheel of (Lamellen ü berstand) until the very big bandwidth of the flap wheel of high peviform.

For peviform grinding dish, grind fin and be bonded in as follows on the supporting member, promptly outline is horn-like towards grinding skin and opens wide and the outward flange of grinding skin exceeds the limit that is made of the bottom surface of grinding fin and the edge of supporting member.Make grinding skin form the edge that is coated with thin especially enough abrasives thus.This grinding dish is specially adapted to the grinding at diagonal angle.By grinding the workpiece to be ground before the edge of plate-like supporting member can be protected in outstanding edge that fin constitutes.In addition, can realize special surface of good grinding, because it has guaranteed to have enough abrasives on common plane in the uniform situation of density by this peviform grinding dish.Another advantage of peviform flap wheel is that it has the holding part that sink in the bottom of loudspeaker.For the peviform flap wheel, the position of flange needn't reduce owing to the geometry of supporting member.Instead, omit flange by the height that fin is set.This situation also makes this flap wheel be applicable to surfacing well.

Description of drawings

Below the present invention will be described referring to figs. 1 through Fig. 6, wherein:

Fig. 1: show grinding dish with triangle grinding fin;

Fig. 2: show the flat flap wheel;

Fig. 3: show the peviform flap wheel;

Fig. 4: the band that shows cutting;

Fig. 5: the coverage condition that shows the grinding dish; And

Fig. 6: show flap wheel.

The specific embodiment

Fig. 1 shows the dish-like support of being made by synthetic material (Kunststoff) 1, and the center of described supporting member 1 has the gauge orifice 2 that wheel hub forms.This gauge orifice is applicable to the insertion fixture, and described fixture is used for fixing the machining spindle (Arbeitsspindel) of processing equipment (Arbeitsmaschine).Even can consider disc shaped and size arbitrarily, but the diameter of the supporting member that uses in this case is 115mm.Also can use fibrous material, timber or metal to substitute synthetic material.Supporting member 1 comprise ring-type, be the support section 3 that taper tilts to the outside, described support section 3 is the center with the axis.Cone angle in this example is about 12 °.According to circumstances, also can use angle between 10 ° and 30 °.In process, on support section 3, can be provided with two concentric sausages of making by binding material 4, each grinds fin by described sausage 4 bondings.The automatic setting of sausage 4 is known, for example carries out in first procedure of processing, and unprocessed subsequently disc (Teller) is stuck (ergreifen) and is placed on the keeper (Halterung).

After adhesive is set, in next step procedure of processing, grinding fin 5 triangular in shape according to the present invention is provided with and is bonded on the support section 3 by means of sausage 4 with base 6.Grind fin 5 and have the outside 7 adjacent with base 6.In this case, the long respectively 30mm in base 6 and outside 7 and be arranged to the right angle.Grinding fin 5 is formed by wide grinding strip (Schleifmittel-Band) cutting of 30mm.According to the present invention, grinding fin 5 is triangle, and wherein the inner edge as the 3rd limit intersects with base 6 and outside 7.The base is with respect to the direction of rotation of flap wheel and be positioned at the place ahead.Therefore in afore-mentioned, grind fin 5 and have the geometry of right angled isosceles triangle.Described triangle member is bonded on the supporting member 1 in the following manner, and promptly to be set to be radially to outside 7 perpendicular bisector 9.The radius 10 that passes the extension of leg-of-mutton top thus is with respect to 23 ° of perpendicular bisector 9 deflections (seeing angle α).

Fig. 2 shows 75 this triangles grinding fins 5 and by its flap wheel that covers fully 11, described flap wheel 11 is applicable to along the direction of arrow and rotates.Can see 5 watts of shape overlap joints of a plurality of grinding fins.Make and grind fin 5 and cover supporting members and can automatically be carried out, wherein will cut into triangle as the sand paper of the band of uncoiling or emery cloth (Schleifgewebe) (promptly in basic unit, having abrasive) and grind fin 5 by cutting tool.As at the side view shown in Fig. 2 b, grinding fin is bonded on the supporting member 1 in the following manner, be that outline 12 has waist (Taille), wherein the diameter with the edge 15 that is formed by the bottom side of grinding fin is approximate identical at least for the diameter at the edge 13 of grinding skin 14.Clearly visible is that grinding skin 14 also is the plane.It is evident that, the fin of a large amount of triangle fin forms can be set, and need not to make fin 2 to set up towards the hole.

Fig. 3 shows the peviform flap wheel 16 with 75 fins 17 three-dimensionally.Fin 17 rectangular triangles, the length on its base is 30mm, the length of outside is 40mm.Clearly visible is that the edge 18 of grinding skin is positioned at the top at the edge 19 that is formed by the bottom side of grinding fin and forms the long trumpet shape or the peviform form.Wherein represent the direction of rotation set by arrow.

Fig. 4 shows by what known abrasive was made and is with 20, wherein for example cuts out the groove 21 that extends along triangle line (Dreieckslinie) by unshowned rotor (Messerwalze).Band includes left hand edge band and the right hand edge band 22 that is formed by continuous material near the zone line of having opened groove like this.In addition, can use a kind of approximate continuous constantly to be with (Endlosband), described band is made as the volume of coiling in advance and moves to cover the grinding dish along the direction of the arrow A of this device.But the zone of fluting also can be formed in the band of fashion unslotted before closing on the covering disc.

Be divided into two band 20as and 20b with 20 from the position of determining by groove 21 is divided into two parts, wherein can carry out special reprocessing each band 20a and 20b.Each

band

20a and 20b comprise approximate edge strip as substrate respectively, and described edge strip has outstanding a plurality of triangles thereon.

Fig. 5 shows the reprocessing of parts 20b, and the initial delta 24 of parts 20b supplies on the disc to be covered 23 by not shown but known ingredients head (Beschickungskopf).The surface that has particle that is positioned at the top of band is schematically shown.At first band is wound into, and makes the limit that is arranged in the place ahead 25 of initial delta 24 be parallel to the surface of support section 3 and is pressed into adhesive sausage 4 and forms the base thus.Carry out the supply process, wherein disc 23 rotation below band, but when being provided with, keep static.After being provided with, stop to supply with band 20b and the initial delta that is provided with 24 is separated with being with 20b by cutting.By be arranged on the ingredients head, the cutter parallel with base 25 carry out this cutting.Its direction is represented by dotted line 27 (referring to Fig. 4).After cutting, be arranged on the disc 23 at the next triangle fin 26 of band 20b, before the rear of previous fin, the disc 23 that is arranged on the corresponding keeper continues to rotate a segment distance in the direction of arrow B.The driving of band wherein can be provided by a kind of gear, and the tooth of described gear is engaged in the teeth groove that grinds strip.

When setting all fins, before removing the device that the disc that covered fully and operation be used to guarantee that adhesive solidifies, all fins in next step jointly by from above pressure cover on the disc.Cover disc 23 with fin in this way, three limits of described fin constitute isosceles triangle, and the angle that its top constitutes is parallel to relative base and is cut off.

In this embodiment, the uncut edge 31 of band 20b forms the inner edge of triangle fin.It is evident that the meaning of edge strip 22 is to be used for to combine and guide " cingulum " 20b with the triangle fin and advances.For this reason, it also must have certain intensity, thus for illustrate herein, base length is for the fin of 40mm, it is about 4mm.Owing to must cut edge strip 22, so edge strip 22 can obtain the angle that is cut of triangle fin.

Fig. 6 shows the flap wheel 28 of this moment after processing, and it has the fin 29 of cutting in the above described manner.Clearly visible is that the top edge 30 of grinding skin no longer stretches out by the formed edge, bottom side that grinds fin.

Claims

1. one kind is ground fin (5), is used to be bonded in the supporting member that especially is plate-like (1) that can drive rotation, and wherein said grinding fin (5) has first limit (6) and second limit (7) adjacent with described first limit,

It is characterized in that:

Also have the 3rd limit (8), intersect with described first limit (6) and described second limit (7) in the extension on described the 3rd limit (8) at least on described the 3rd limit (8).

2. grinding fin as claimed in claim 1 is characterized in that, triangle is arranged in described first limit (6), second limit (7) and the 3rd limit (8).

3. grinding fin as claimed in claim 1 or 2 is characterized in that, described first limit (6), second limit (7) and the 3rd limit (8) are straight.

4. each described grinding fin in the claim as described above, it is characterized in that, described first limit (6), second limit (7) and the 3rd limit (8) constitute isosceles triangle, and formed angle, the top of described isosceles triangle is cut in the mode that is parallel to relative base.

5. a flap wheel (11), has the supporting member (1 that especially is plate-like, 23), described supporting member can drive rotation and support the grinding fin (5) that a plurality of watts of shapes overlap around an axis, wherein said grinding fin (5) is fixed to, especially is bonded to described axis is on the annular support section (3) at center

It is characterized in that:

It is base (6 that described grinding fin (5) has the first straight limit, 25) and i.e. outside (7), straight second limit adjacent with described base, and it is inner edge (8 that described grinding fin (5) also has the 3rd limit, 31), described inner edge (8,31) intersect with described base (6,25) and described outside (7) in the extension of described inner edge at least, the described outside (7) of wherein said grinding fin (5) forms the outline (12) of described flap wheel (11).

6. flap wheel as claimed in claim 5 is characterized in that, described grinding fin (24,26) by cutting in basic unit, have abrasive band (20b), especially cut sand paper or emery cloth forms triangle.

7. as claim 5 or 6 described flap wheels, it is characterized in that, described grinding fin (24,26) be bonded in described supporting member (1 as follows, 23) on: described outline (12) be towards grinding skin (14) open wide horn-like, and the edge of described grinding skin (14) stretches out the edge (15) that the bottom side by described grinding fin forms and the edge of described supporting member (23).

8. each described flap wheel in the claim 5 to 7 as described above, it is characterized in that, described grinding fin (24,26) be bonded in described supporting member (1 as follows, 23) on: described outline (12) has waist, and the diameter at the edge of described grinding skin the diameter with the formed edge, bottom side of described grinding fin is close at least.

9. each described flap wheel in the claim 5 to 8 as described above is characterized in that the quantity of the grinding fin (5) that described supporting member (1,23) is supported surpasses 50, especially above 70.

10. one kind is used for making the method for each described flap wheel of claim 5 to 9 as described above, it is characterized in that, grinding strip (20) is pre-cut, and be directed to the device that is used to load, wherein said band (20b) comprises the suprabasil a plurality of triangle fins that are suspended in described band jointly.

11. method as claimed in claim 10, it is characterized in that, the limit that is positioned at the place ahead (25) of first triangle fin (24) of described band (20b) is arranged on the support section (3) of described supporting member (1,23), and is kept by the adhesive that applies herein (4).

12. method as claimed in claim 11 is characterized in that, described band (20b) is reeled as follows: the described limit (25) that is positioned at the place ahead entirely is placed on the described support section (3).

13. each described method in the claim 10 to 12 is characterized in that as described above, described first triangle fin (24) of being placed separates with described band (20b) by cutting (27).

14. each described method in the claim 10 to 13 is characterized in that as described above, at after separating, described supporting member (23) is moved further a segment distance, and will be positioned at the position that is used to place next fin (26).