CN210998244U - Base material structure for sintered grinding wheel - Google Patents
Base material structure for sintered grinding wheel Download PDFInfo
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- CN210998244U CN210998244U CN201921821650.7U CN201921821650U CN210998244U CN 210998244 U CN210998244 U CN 210998244U CN 201921821650 U CN201921821650 U CN 201921821650U CN 210998244 U CN210998244 U CN 210998244U
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- base material
- main body
- grinding wheel
- body part
- sintering
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- 239000000463 material Substances 0.000 title claims abstract description 58
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 description 12
- 230000007704 transition Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000006061 abrasive grain Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a substrate structure for sintered grinding wheel, include: the base material head comprises a main body part and an abrasive particle layer laid outside the main body part, the joint of the main body part and the abrasive particle layer comprises a first step part, a first inclined plane part, a second step part, a second inclined plane part, a straight line part and an arc part which are sequentially connected along the axial direction, and one end of the arc part, far away from the straight line part, is connected with the outer end face of the main body part; the base material stalk portion, the base material stalk portion fixed set up in the root of base material head, the outer terminal surface of main part is for keeping away from the one end terminal surface of base material stalk portion. Thereby solving the problem that the base material structure for sintering the grinding wheel cracks after sintering. Also, changing the substrate head does not increase the production cost.
Description
Technical Field
The utility model relates to a sand wheel machining substrate technical field especially relates to a substrate structure for emery wheel is sintered.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The grinding wheel is widely applied to the field of processing, and the function of the grinding wheel is more important for processing brittle and hard materials such as glass, ceramics, gems and the like. In the electronic device and optoelectronic element industry, a plating or sintering grinding wheel is generally used for processing curved surfaces and profiles of parts.
For the sintered grinding wheel for processing the curved surface and the contour of the part, the grain size of the grinding wheel grains is 200 to 400 meshes, and the diameter is within the range
To
After the grinding wheel is formed into a cylindrical blank and sintered, the phenomena of cracking and holes are easy to occur, and the grinding wheel is scrapped. In the conventional sintered grinding wheel base material design, the thickness allowance of a sand layer is reserved according to the size profile requirement of a finished grinding wheel, namely the size of the head of the base material, as shown in fig. 1. The design is easy to crack after sintering, and particularly, the joint of the abrasive grain layer and the base material is cracked in the area A in the figure 1, and tiny longitudinal cracks are formed; transverse cracks may occur in the region B in fig. 1; in the region C of fig. 1, a hole is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at least solving the problem that the base material structure for the sintered grinding wheel cracks after being sintered. The purpose is realized by the following technical scheme:
the utility model discloses a first aspect provides a substrate structure for sintered grinding wheel, include:
the base material head comprises a main body part and an abrasive particle layer laid outside the main body part, the joint of the main body part and the abrasive particle layer comprises a first step part, a first inclined plane part, a second step part, a second inclined plane part, a straight line part and an arc part which are sequentially connected along the axial direction, and one end of the arc part, far away from the straight line part, is connected with the outer end face of the main body part;
the base material stalk portion, the base material stalk portion fixed set up in the root of base material head, the outer terminal surface of main part is for keeping away from the one end terminal surface of base material stalk portion.
Further, the outer end face of the main body portion is a flat face.
Further, the width of the first step portion is 0.5mm to 0.8 mm.
Further, the width of the second step part is 0.8mm-1.2 mm.
Further, the fillet radius of the circular arc part is 2mm-3 mm.
According to the base material structure for the sintered grinding wheel, the first step part is designed below the head part of the base material aiming at the problems of seam cracking and longitudinal cracking of the grinding particle layer and the main body part between the head part of the base material and the handle part of the base material, so that a balanced welding tension is generated on the sintering shrinkage of a blank, and the seam cracking and the longitudinal cracking can be effectively prevented; aiming at the problem of transverse cracks generated in the middle of the base material, a second step transition is designed in the middle area of the base material, and an arc transition is added, so that the violent change effect of the blank thickness is reduced, and the generation of transverse cracks in the middle position can be effectively reduced; aiming at the problem that holes are easily generated on the outer end face of the head part of the base material far away from the handle part of the base material, a plane and a fillet are designed at the top part of the base material for transition, so that the internal pressure distribution of a top layer blank can be improved in the blank pressing process, the phenomena of caking and holes are improved, and the probability of generating the holes on the top part of the grinding wheel after sintering is reduced.
Thus, the base material structure provided by the utility model combines the sintering shrinkage principle of the abrasive grain layer blank, and the base material steps, the inclined planes, the fillets and other structures are additionally arranged at the designated positions, so that the welding tension is increased, and meanwhile, the displacement channel is reserved for shrinkage, thereby reducing the sintering cracking phenomenon; and the top size of the base material is designed according to the pressure distribution of the blank during pressing, so that the blank pressure of the blank is balanced as much as possible, the generation of caking and holes in the blank is prevented, and the sintering cracking phenomenon is reduced, thereby solving the problem that the base material structure for sintering the grinding wheel cracks after sintering. Also, changing the substrate head does not increase the production cost.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a schematic structural view of a substrate structure for a sintered grinding wheel provided in the prior art;
fig. 2 is a schematic structural diagram of a specific embodiment of the substrate structure for a sintered grinding wheel according to the present invention.
The reference numbers are as follows:
100-substrate head
101-first step 102-first slope part 103-second step 104-second slope part
105-arc 106-outer end face
200-substrate handle
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 2, in a specific embodiment, the present invention provides a substrate structure for a sintered grinding wheel, which includes a substrate head 100 and a substrate handle 200, wherein the substrate handle 200 is fixedly disposed at the root of the substrate head 100, and the substrate head 100 and the substrate handle 200 are integrally formed to ensure the strength of the workpiece.
The base material head comprises a main body part and an abrasive particle layer laid outside the main body part, the joint of the main body part and the abrasive particle layer comprises a first step part 101, a first inclined plane part 102, a second step part 103, a second inclined plane part 104, a straight line part and an arc part 105 which are sequentially connected along the axial direction, and one end, far away from the straight line part, of the arc part 105 is connected with an outer end face 106 of the main body part; the base material handle portion is fixedly arranged at the root of the base material head portion, and the outer end face 106 of the main body portion is an end face far away from the base material handle portion.
Specifically, the outer end surface 106 of the main body portion is a flat surface, the width of the first step portion 101 is 0.5mm to 0.8mm, and the width of the second step portion 103 is 0.8mm to 1.2mm, preferably 1 mm. The fillet radius of the circular arc part 105 is 2mm-3 mm.
More specifically, aiming at the problems of cracking and longitudinal cracks of the joint between the abrasive layer and the base material in the area A shown in fig. 1, the first step part 101 is designed under the head part of the base material, as shown in the area I in fig. 2, the width of the first step part 101 is 0.5-0.8 mm, a balanced welding tension is generated on sintering shrinkage of a blank, and the joint cracking and the longitudinal cracks can be effectively prevented.
Aiming at the problem of transverse cracks in a B area shown in fig. 1, the scheme designs a second step part 103 in the middle area of the base material for transition, and increases an arc part 105 for fillet transition, wherein the width of the second step part 103 is about 1mm, and the fillet radius of the arc part 105 is from R2 to R3, as shown in areas II and III in fig. 2; the design reduces the violent change effect of the thickness of the blank, and can effectively reduce the generation of transverse cracks at the middle position.
Aiming at the problem that holes are easily generated in the area C shown in figure 1, the scheme designs plane and fillet transition at the top of the base material, the diameter of the plane is 2-3 mm, the design can improve the internal pressure distribution of a top layer blank in the blank pressing process, improve the caking and hole phenomena, and reduce the probability of generating holes at the top of the grinding wheel after sintering.
It is noted that the term "axial" as used herein refers to the longitudinal direction of the substrate and the term "radial" refers to the radial direction of the substrate.
In the above embodiment, according to the base material structure for the sintered grinding wheel of the present invention, in order to solve the problems of the joint crack and the longitudinal crack of the abrasive grain layer and the main body portion between the head portion and the handle portion of the base material, the first step portion 101 is designed below the head portion of the base material, so that a balanced welding tension is generated to the sintering shrinkage of the material blank, and the joint crack and the longitudinal crack can be effectively prevented; aiming at the problem of transverse cracks generated in the middle of the base material, a second step part 103 is designed in the middle area of the base material for transition, and an arc part 105 is added for transition, so that the violent change effect of the blank thickness is reduced, and the transverse cracks generated in the middle position can be effectively reduced; aiming at the problem that holes are easily generated on the outer end surface 106 of the head part of the base material, which is far away from the handle part of the base material, the top part of the base material is designed with a plane and a fillet transition, so that the internal pressure distribution of a top layer blank can be improved in the blank pressing process, the phenomena of caking and holes are improved, and the probability of generating the holes on the top part of the grinding wheel after sintering is reduced.
Thus, the base material structure provided by the utility model combines the sintering shrinkage principle of the abrasive grain layer blank, and the base material steps, the inclined planes, the fillets and other structures are additionally arranged at the designated positions, so that the welding tension is increased, and meanwhile, the displacement channel is reserved for shrinkage, thereby reducing the sintering cracking phenomenon; and the top size of the base material is designed according to the pressure distribution of the blank during pressing, so that the blank pressure of the blank is balanced as much as possible, the generation of caking and holes in the blank is prevented, and the sintering cracking phenomenon is reduced, thereby solving the problem that the base material structure for sintering the grinding wheel cracks after sintering. Also, changing the substrate head does not increase the production cost. The whole base material is designed, the cost is not increased, and production tests prove that the sintering cracking can be reduced to below 5% from about 40%, the yield is improved, and the workload of the subsequent repairing process is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A substrate structure for a grinding wheel comprising:
the base material head comprises a main body part and an abrasive particle layer laid outside the main body part, the joint of the main body part and the abrasive particle layer comprises a first step part, a first inclined plane part, a second step part, a second inclined plane part, a straight line part and an arc part which are sequentially connected along the axial direction, and one end of the arc part, far away from the straight line part, is connected with the outer end face of the main body part;
the base material stalk portion, the base material stalk portion fixed set up in the root of base material head, the outer terminal surface of main part is for keeping away from the one end terminal surface of base material stalk portion.
2. The substrate structure for a sintered grinding wheel according to claim 1, wherein the outer end face of the main body portion is a flat face.
3. The substrate structure for a sintered grinding wheel according to claim 1, wherein the width of the first stepped portion is 0.5mm to 0.8 mm.
4. The substrate structure for a sintered grinding wheel according to claim 1, wherein the width of the second stepped portion is 0.8mm to 1.2 mm.
5. The substrate structure for a sintering wheel according to claim 1, characterized in that the fillet radius of the circular arc portion is 2mm to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921821650.7U CN210998244U (en) | 2019-10-28 | 2019-10-28 | Base material structure for sintered grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921821650.7U CN210998244U (en) | 2019-10-28 | 2019-10-28 | Base material structure for sintered grinding wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210998244U true CN210998244U (en) | 2020-07-14 |
Family
ID=71503946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921821650.7U Active CN210998244U (en) | 2019-10-28 | 2019-10-28 | Base material structure for sintered grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210998244U (en) |
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2019
- 2019-10-28 CN CN201921821650.7U patent/CN210998244U/en active Active
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