CN214351815U - Resin composite metal grinding wheel - Google Patents

Abstract

The utility model discloses a resin composite metal grinding wheel, which comprises a base body and an annular metal tool bit, wherein the metal tool bit is provided with a mounting surface and a grinding surface which are arranged oppositely; the base body is provided with a working surface, and the mounting surface is fixedly connected with the working surface, so that the grinding surface can be used for grinding; the outer ring of the metal cutter head is provided with a first resin layer. The utility model discloses utilize the elasticity of the resin layer on the metal tool bit outer lane to reduce ceramic tile and emery wheel contact impact force in the twinkling of an eye, avoid the edging work piece the phenomenon on the mashed limit of collapsing angle to appear, defect rate when reducing the emery wheel processing edging work piece.

Description

Resin composite metal grinding wheel

Technical Field

The utility model relates to a grinding tool technical field especially relates to a resin composite metal emery wheel.

Background

At present, with the increasing of polishing linear speed, the existing welding type metal edge grinding wheel cannot meet the polishing requirement, namely the existing grinding wheel usually adopts a metal tool bit directly welded on a steel matrix working surface, the metal tool bit is completely exposed, the defects caused in the post-grinding use process are increased increasingly, and the optimal rate is reduced. In the use process of the existing metal grinder, because the instantaneous impact force of a ceramic tile in contact with a metal grinding wheel is large, the rigidity of a metal cutter head is strong, and the buffering is weak, so that the defects of corner breakage, edge breakage and the like of an edge grinding workpiece are caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a resin composite metal emery wheel avoids the edging work piece the phenomenon of the mashed limit of tipping angle to appear, defect rate when reducing the abrasive wheel processing edging work piece.

The purpose of the utility model is realized by adopting the following technical scheme:

a resin composite metal grinding wheel comprises a base body and an annular metal cutter head, wherein the metal cutter head is provided with a mounting surface and a grinding surface which are oppositely arranged;

the base body is provided with a working surface, and the mounting surface is fixedly connected with the working surface, so that the grinding surface can be used for grinding; the outer ring of the metal cutter head is provided with a first resin layer.

Further, the inner ring of the metal tool bit is provided with a second resin layer.

Further, the grinding surface is an inclined surface or a plane; when the grinding surface is an inclined surface, the inclined surface is arranged in an upward inclined manner from the outer ring of the metal tool bit to the inner ring of the metal tool bit.

Furthermore, a plurality of grooves are formed in the circumferential surface of the first resin layer and/or the second resin layer.

Further, the resin composite metal grinding wheel further comprises a plurality of diamond segments, and the diamond segments are arranged along the circumferential direction of the base body to form the metal tool bit.

Further, the plurality of diamond segments are integrally formed to form the metal tool tip.

Further, the plurality of diamond segments are welded to form the metal tool tip.

Further, a plurality of diamond segments are fixed on the substrate by means of welding layers; the welding layer is a silver welding sheet.

Furthermore, a dovetail groove is formed in the position where the base body is connected with the resin layer.

Further, the metal tool bit is arranged coaxially with the base body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses utilize the elasticity of the resin layer on the metal tool bit outer lane to reduce ceramic tile and emery wheel contact impact force in the twinkling of an eye to avoid the edging work piece the phenomenon on the mashed limit of collapsing angle to appear, the defect rate when reducing the emery wheel processing edging work piece.

Drawings

Fig. 1 is a cross-sectional view of the resin composite metal grinding wheel of the present invention when the grinding surface is a bevel;

FIG. 2 is a cross-sectional view of the resin composite metal grinding wheel according to the present invention, in which the grinding surface is a plane;

FIG. 3 is a first schematic view of the resin composite metal grinding wheel of the present invention;

FIG. 4 is a schematic structural view of a resin composite metal grinding wheel according to the present invention;

FIG. 5 is a third schematic structural view of the resin composite metal grinding wheel of the present invention;

fig. 6 is a schematic structural view of a hot press mold according to an embodiment of the present invention.

In the figure: 1. a substrate; 10. a working surface; 11. a dovetail groove; 2. a metal tool bit; 20. a mounting surface; 21. grinding the noodles; 3. a resin layer; 30. a first resin layer; 31. a second resin layer; 300. grooving; 4. a mold frame; 5. a mold core; 6. a base plate; 7. a regional cavity; 70. and (5) pressing a ring.

Detailed Description

In the following, the present invention is described with priority in conjunction with the accompanying drawings and the detailed description, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The implementation mode is as follows:

as shown in fig. 1-6, the present invention discloses a resin composite metal grinding wheel, which comprises a base 1 and an annular metal tool bit 2, wherein the outer ring of the metal tool bit 2 is provided with a first resin layer 30; of course, the metal cutting head 2 further has a mounting surface 20 and a grinding surface 21 which are oppositely arranged, the base body has a working surface 10, the mounting surface 20 is fixedly connected with the working surface 10, and the grinding surface 21 is used for grinding. Also can understand, the utility model discloses a resin composite metal emery wheel utilizes the elasticity of the first resin layer 30 on the 2 outer lanes of metal tool bit can reduce ceramic tile and emery wheel contact impact force in the twinkling of an eye to avoid the edging work piece the phenomenon of the mashed limit of broken angle to appear, and then the defect rate when reducing the emery wheel processing edging work piece.

Preferably, the inner ring of the metal tool bit 2 is provided with the second resin layer 31, and when the inner ring of the metal tool bit 2 is not provided with the second resin layer 31, the resin composite metal grinding wheel of the present invention still has a small amount of defective products after grinding the workpiece; the inventors have found through repeated experimental studies that the resin composite metal grinding wheel of the present invention has substantially no defective products after grinding a workpiece when the inner ring of the metal chip 2 is provided with the second resin layer 31. The combination of the first resin layer 30 of the outer ring of the metal tool bit 2 and the second resin layer 31 of the inner ring of the metal tool bit 2 can avoid the defect rate of the grinding wheel during the ceramic tile processing, avoid the phenomenon of corner collapse and edge erosion of the edge grinding workpiece, and ensure the excellent rate of the grinding products.

Preferably, as shown in fig. 4, a plurality of slots 300 are opened on the circumferential surface of the first resin layer 30 and/or the second resin layer 31. That is, as can be understood by those skilled in the art, the groove 300 may be formed on the circumferential surface of the first resin layer 30, or the groove 300 may be formed on the circumferential surface of the second resin layer 31, or the grooves may be formed on the circumferential surfaces of the first resin layer 30 and the second resin layer 31, so that the function of discharging chips is achieved during the process of grinding a workpiece; in addition, as a preferred embodiment, the grinding process of the workpiece is as follows: the first resin layer 30 is contacted, then the grinding surface 21 is transited, and finally the second resin layer 31 is transited, so that it can be understood that the sharpness of the first resin layer and/or the second resin layer can be increased by forming a plurality of slots 300 on the circumferential surface of the first resin layer and/or the second resin layer, and the grinding effect of the workpiece is better.

The grinding surface is an inclined surface or a flat surface, preferably, the grinding surface 21 of the present embodiment is an inclined surface, as shown in fig. 1, the inclined surface is inclined upward from the outer ring of the metal cutter head 2 to the inner ring of the metal cutter head 2, and the inclined angle is preferably 2-5 °. In the process of grinding the workpiece, the edge grinding workpiece is obliquely arranged in the area of the grinding surface 21, namely the grinding workpiece contacts the first resin layer 30 firstly, but when the workpiece starts to be ground by contacting with the first resin layer 30, the grinding is rough, namely the elasticity of the first resin layer 30 is utilized to reduce the impact force at the moment when the ceramic tile contacts with the grinding wheel; then, through the above-mentioned inclination angle, the grinding workpiece can transit to the grinding area of the grinding surface 21 of the metal tool bit 2, and the grinding process is further performed on the workpiece by using the metal grinding surface, so that the workpiece can transit from the first resin layer 30 to the grinding surface 21 in one step, and the grinding effect of the ground workpiece can be better. It should be noted that, those skilled in the art may reasonably change the above-mentioned inclination angle according to the actual processing requirement of the grinding workpiece, and it should also fall into the protection scope of the present invention. In addition, as shown in fig. 2, the grinding surface may also be a plane, which can also grind the edge grinding workpiece, i.e. a person skilled in the art can set the grinding surface to be a plane or an inclined plane according to the actual situation, and the protection scope thereof should also fall into the present invention.

The utility model discloses still include a plurality of diamond festival pieces, a plurality of diamond festival pieces are arranged along the circumference of base member 1 and are formed metal tool bit 2, also foretell annular metal tool bit 2 is formed by a plurality of diamond festival pieces. Preferably, as shown in fig. 3 or 4, several diamond segments may be welded to form the metal tip 2; as shown in fig. 5, a plurality of diamond segments may be integrally formed to form the metal cutting tip 2, which is not limited herein. Preferably, a plurality of diamond segments can be fixed on the substrate 1 by means of a welding layer, the welding layer is preferably a silver welding sheet, and the welding performance is better, so that the diamond segments and the substrate are fixed more firmly, and the stability is better.

In a preferred embodiment, the metal cutter head 2 is arranged coaxially with the base body 1, so that the rotating speed of the metal cutter head 2 can be increased, and the grinding effect of the ceramic tile is better.

In a preferred embodiment, a dovetail groove 11 is formed at a position where the substrate 1 is connected with the resin layer 3, so that the resin layer 3 and the substrate 1 can be better combined.

In a preferred embodiment, a gap is reserved between adjacent diamond segments, the gap is filled with the resin formula powder, the gap is 0-8 mm, preferably, the gap is 5mm, so that the filling effect of the resin formula powder is better, and the resin formula powder is convenient to fill in the manufacturing process of the grinding wheel.

The method for manufacturing the resin composite metal grinding wheel is described in detail below, and comprises the following steps:

s1, material preparation: preparing a substrate 1, an annular metal tool bit 2, resin formula powder, a hot-pressing die, a resin edging machine and a resin grinding wheel hot press;

s2, cleaning the substrate 1: cleaning the substrate 1;

s3, surface treatment: keeping the surface of the base body 1 clean without greasy dirt and rust, fixing the annular metal cutter head 2 on the surface of the base body 1 to form a semi-finished product, and then carrying out sand blasting treatment;

s4, assembling: as shown in fig. 6, the hot-pressing mold comprises a mold frame 4, a mold core 5 and a bottom plate 6, wherein the mold core 5 is located in the mold frame 4, an area cavity 7 is reserved between the outer wall of the mold core 5 and the inner wall of the mold frame 4, the width of the area cavity 7 is larger than the difference between the inner ring and the outer ring of the annular metal cutter head 2, and the bottom plate 6 is also located in the mold frame 4 and is rotatably connected with the mold core 5, so that the mold frame 4, the mold core 5 and the bottom plate 6 can form a semi-closed space;

when the semi-finished product in the step S3 is placed in a hot-pressing mold, the substrate 1 is mounted on the bottom plate 6, the outer side surface of the substrate 1 is close to the inner wall of the mold frame 4, and the metal cutter head 2 is located in the area cavity 7;

s5, resin compounding: slowly pouring the resin formula powder into the area cavity 7 in the step S4, uniformly rotating the bottom plate 6, scraping the resin formula powder, uniformly and uniformly covering the resin formula powder around the metal cutter head 2, and then placing a pressing ring 70 in the area cavity 7 to press the filled resin formula powder;

s6, hot-pressing and curing: pushing the combination in the step S5 into the resin grinding wheel hot press, and carrying out curing molding according to preset process parameters, so that the resin formula powder in the step S5 forms a resin layer 3;

s7, resin edging: and (3) utilizing the resin edging machine to edge the resin of the product solidified and formed in the step (S6) and enabling the resin to leak out of the grinding surface 21 of the metal cutter head 2 in the resin layer 3, so that the metal cutter head 2 can be better edged, and when the metal grinding wheel machine is used, the metal cutter head 2 can grind the ceramic workpiece more quickly and better.

The resin composite metal grinding wheel can be understood that in the manufacturing process of the resin composite metal grinding wheel, the matrix 1 is cleaned firstly, so that the subsequent processes are convenient to carry out, and the matrix 1 is of a disc structure; secondly, fixing the annular metal tool bit 2 on the base body 1 to form a semi-finished product, and then carrying out sand blasting treatment to facilitate better connection between the resin formula powder and the base body 1 and the metal tool bit 2; after sand blasting, assembling the semi-finished product in a hot-pressing die, and mainly compounding resin formula powder with the metal tool bit 2 to enable the resin formula powder to uniformly and completely wrap the metal tool bit 2; then, hot-pressing and solidifying are carried out through a resin grinding wheel hot press, and the resin formula powder is solidified and molded into a resin layer 3; finally, the resin is edged by a resin edging machine and leaks out of the end face of the metal tool bit 2 in the resin layer 3 to form a grinding face 21, so that the metal tool bit 2 is kept to be better edged, and the metal tool bit 2 is ensured to grind the ceramic workpiece more quickly and better when the ceramic workpiece is installed for use. According to the manufacturing method, the metal tool bit 2 of the grinding wheel is uniformly and completely wrapped by the resin formula powder layer, so that the metal tool bit 2 of the grinding wheel is prevented from being rusted in the manufacturing process of the grinding wheel, the phenomenon of corner collapse and edge erosion of a workpiece (ceramic tile) to be ground by the metal grinding wheel in the using process is avoided, the product performance is maintained to be stable, and the defect rate of the grinding wheel in processing the ground workpiece is reduced.

It is worth mentioning that the annular metal insert 2 of the present invention is produced by the following steps:

step 1: preparing a silver soldering lug, a welding machine and a plurality of diamond segments;

step 2: welding diamond segments on the base body 1 by using a silver soldering lug through a welding machine, wherein the diamond segments are uniformly distributed along the circumferential direction of the base body 1;

and step 3: and (3) performing surface edging on the diamond segments in the step (2), and keeping the tool bit end surface of each diamond segment at the same level to form the annular metal tool bit (2).

The welding method can be understood that the diamond segments are uniformly welded on the substrate 1 along the circumferential direction of the substrate 1 by the silver soldering lug through the welding machine, gaps are reserved among the diamond segments, filling of resin formula powder is facilitated, the gaps reserved among the diamond segments are preferably 0-8 mm, and the filling effect of the resin formula powder is better; immediately afterwards, the surface of the diamond that will weld is opened a knife, and aim at keeps the tool bit terminal surface of every diamond festival piece to be in same level, so that diamond festival piece height is uneven in the use appears, causes the grinding inhomogeneous and the mashed limit of spring angle, and diamond keeps out the sword state in each festival piece and makes the emery wheel sharper, better use. I.e. a plurality of diamond rings are welded on the substrate 1 to form the annular metal tool bit 2.

As a preferred embodiment, the resin formula powder comprises resin powder, abrasive, metal powder, other fillers, accelerators and modifiers; wherein the resin powder is added in a proportion of 25-60%, the grinding material is added in a proportion of 3-12%, the metal powder is added in a proportion of 3-15%, the other fillers are added in a proportion of 0-15%, and the accelerator and the modifier are added in a proportion of 0-5%.

The resin powder is one or a mixture of polyimide resin powder, phenolic resin powder, melamine resin powder and epoxy resin powder; the grinding material is one or a mixture of diamond powder, CBN powder (cubic boron nitride powder), plated diamond powder, silicon carbide powder, white corundum powder and garnet powder; the metal powder is one or a mixture of a plurality of copper powder, zinc powder, iron powder, aluminum powder and alloy powder; the other fillers are one or two of inorganic fillers and organic fillers, the inorganic fillers are one or more of metal oxides, cryolite and salt substances, and the organic fillers are one or more of nylon powder, tetrafluoroethylene and butadiene-acrylonitrile rubber.

Resin powder is used as: thermosetting phenolic resin powder; the abrasive is as follows: mixing the diamond grinding material and the silicon carbide micro powder; the metal powder is: mixing copper-clad iron powder; other fillers are: the filler of the metal oxide is explained. Namely, in some embodiments, the resin formula powder accounts for 25-60% of the total resin formula powder by the investment of the thermosetting phenolic resin powder; the diamond abrasive accounts for 3-12% of the total resin formula powder, and the silicon carbide micro powder accounts for 5-30% of the total resin formula powder; the copper-clad iron powder accounts for 3-15% of the total resin formula powder; the filler of the metal oxide accounts for 0-15% of the total resin formula powder; the accelerator and the modifier account for 0-5% of the total resin formula powder, and the prepared resin formula powder has good hot-press curing forming effect and good elasticity.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. A resin composite metal grinding wheel is characterized in that: the grinding tool comprises a base body and an annular metal tool bit, wherein the metal tool bit is provided with a mounting surface and a grinding surface which are oppositely arranged;

the base body is provided with a working surface, and the mounting surface is fixedly connected with the working surface, so that the grinding surface can be used for grinding; the outer ring of the metal cutter head is provided with a first resin layer.

2. The resin composite metal grinding wheel according to claim 1, wherein: and the inner ring of the metal tool bit is provided with a second resin layer.

3. The resin composite metal grinding wheel according to claim 1, wherein: the grinding surface is an inclined surface or a plane; when the grinding surface is an inclined surface, the inclined surface is arranged in an upward inclined manner from the outer ring of the metal tool bit to the inner ring of the metal tool bit.

4. The resin composite metal grinding wheel as defined in claim 2, wherein: and a plurality of grooves are formed on the circumferential surface of the first resin layer and/or the second resin layer.

5. The resin composite metal grinding wheel according to claim 1, wherein: the metal tool bit further comprises a plurality of diamond segments, and the diamond segments are arranged along the circumferential direction of the base body to form the metal tool bit.

6. The resin composite metal grinding wheel according to claim 5, wherein: the plurality of diamond segments are integrally formed to form the metal tool bit.

7. The resin composite metal grinding wheel according to claim 5, wherein: the plurality of diamond segments form the metal tool bit through welding.

8. The resin composite metal grinding wheel as claimed in any one of claims 5 to 7, wherein: the diamond segments are fixed on the substrate by means of welding layers; the welding layer is a silver welding sheet.

9. The resin composite metal grinding wheel according to claim 1, wherein: and a dovetail groove is formed at the position where the base body is connected with the resin layer.

10. The resin composite metal grinding wheel according to claim 1, wherein: the metal tool bit and the base body are coaxially arranged.

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