CN216179717U - Novel matrix for chamfer grinding wheel - Google Patents
Novel matrix for chamfer grinding wheel Download PDFInfo
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- CN216179717U CN216179717U CN202122105928.4U CN202122105928U CN216179717U CN 216179717 U CN216179717 U CN 216179717U CN 202122105928 U CN202122105928 U CN 202122105928U CN 216179717 U CN216179717 U CN 216179717U
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- dovetail
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- grinding wheel
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Abstract
The utility model aims to provide a matrix for a chamfering grinding wheel, which aims at the defects that the matrix for the chamfering grinding wheel in the prior art is connected with a material layer through bonding, the matrix is not firmly connected with the material layer and is easy to fall off, and comprises a matrix body, a dovetail groove is arranged on the base body, one end of the side surface II of the dovetail is connected with the outer circumferential surface of the base body through the outer circular arc II, the other end of the base body is connected with the groove bottom of the dovetail groove through an inner circular arc II, the radius of the inner circular arc II is larger than that of the process fillet and is used for containing a material layer and glue solution, the base body for the novel chamfering grinding wheel with the structure is adopted, a reliable bonding layer is formed at the position of the inner circular arc II to form a connected root, the material layer and the substrate are mutually occluded to increase the firmness of connection, and simultaneously, the length of the side surface is extended without increasing the depth of the dovetail groove, and the firmness of the connection is increased.
Description
Technical Field
The utility model relates to a grinding tool, in particular to a matrix for a chamfering grinding wheel.
Background
The chamfering grinding wheel is a main tool for processing the edges of products such as sapphire wafers, silicon carbide wafers, silicon wafers, glass, ceramic tiles and the like, the chamfering grinding wheel is used for grinding the edges of the cut wafers or glass, the defects of edge cracks, edge breakage and the like caused by cutting are eliminated, the mechanical strength of the processed products is improved while the appearance quality of the processed products is improved, the wafers are prevented from being broken due to inward extension of cracks on the edges of the wafers in the subsequent process, and the sharp edges of the wafers scratch personnel or other contacted objects.
At present, a chamfer grinding wheel product sold in markets at home and abroad consists of a substrate and a superhard grinding layer, wherein the substrate is in an annular structure provided with a positioning hole, the outer circumferential surface of the substrate is a smooth surface or is provided with knurls for increasing friction force, the superhard grinding layer is attached to the outer circumferential surface of the substrate, the superhard grinding layer is bonded or welded with the substrate through special glue solution, the grinding layer is sintered into a grinding block capable of forming a circular ring by adopting a sintering process before connection, and then the grinding block is bonded or welded outside the substrate; by adopting the connection mode of the material layer and the base body, the material layer in the product sold on the market at present is divided, a gap is formed between the divided material layers to form a cooling water tank, the part of the outer circumference of the base body corresponding to the cooling water tank of the material layer is also provided with the cooling tank, the integral strength of the base body is easy to damage by arranging the cooling tank on the base body, when the grinding wheel is used for high-speed grinding, the deformation which is difficult to find is easy to cause, and particularly when the base body is an aluminum base body, the edge of the grinding wheel is not rounded because the aluminum base body is soft and easy to deform. In addition, the connection is carried out by adopting a pure viscose liquid bonding mode, and the bonding strength is easy to reduce because the viscose liquid is easily influenced by the external environment, so that the overall bonding firmness is poor, and the high-speed grinding machine is not suitable for high-speed grinding. By adopting a welding connection mode, the high temperature generated by welding can cause the base body to generate deformation and stress, and the phenomenon of material layer falling or cracking is easily generated in the use process under the action of the stress, thereby bringing hidden danger to safety production, simultaneously reducing the utilization rate of materials and increasing the production cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a matrix for a chamfering grinding wheel, aiming at the defects that the matrix for the chamfering grinding wheel in the prior art is connected with a material layer through bonding, and the matrix is not firmly connected with the material layer and is easy to fall off.
The utility model is realized by the following technical scheme:
a novel matrix for a chamfering grinding wheel comprises a matrix body, wherein a dovetail groove is formed in the matrix body, one end of a second side surface of a dovetail is connected with the outer circumferential surface of the matrix body through a second outer arc, the other end of the second side surface of the dovetail is connected with the bottom of the dovetail groove through a second inner arc, and the radius of the second inner arc is larger than that of a process fillet and is used for containing a material layer and glue;
the inclination angle between the second side surface and the groove bottom is 30-45 degrees;
the radius of the inner circular arc II is 0.3-0.5mm, the radius of the outer circular arc II is 0.5-0.8mm, and the length of the side surface II is 1.5-1.8 mm;
the inner arc II and the outer arc II are respectively tangent with the side surface;
sand blasting layers are arranged on the outer surface of the base body and in the dovetail groove;
knurls are arranged on the outer surface of the base body and in the dovetail groove;
the dovetail groove is a through groove and is arranged along the axial direction of the base body.
The utility model has the following beneficial effects:
when the dovetail groove is arranged on the outer circumferential surface of the base body, the material layer can be distributed in the dovetail groove, the contact area between the material layer and the base body is increased, because the opening width of the dovetail groove is smaller than the width of the groove bottom of the dovetail, the material layer is locked on the outer circumferential surface of the base body by the dovetail groove, so that the material layer and the base body are not easy to fall off, one end of a second side surface of the dovetail is connected with the outer circumferential surface of the base body through a second outer arc, the other end of the second side surface of the dovetail is connected with the groove bottom of the dovetail groove through a second inner arc, the whole groove wall of the dovetail groove is S-shaped, the connection length between the material layer and the base body can be increased, the second inner arc is used for containing the material layer and glue, the glue is contained in the second inner arc, a reliable bonding layer is formed at the position of the second inner arc, the root part is formed, the material layer and the base body are mutually engaged, and the connection firmness is increased, meanwhile, the length of the side surface is prolonged under the condition that the depth of the dovetail groove is not increased, and the firmness of connection is improved.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a novel matrix for a chamfer grinding wheel according to the utility model;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural view of an embodiment of a chamfer grinding wheel employing the novel chamfer grinding wheel matrix of the present invention;
FIG. 4 is a partial enlarged view of A in FIG. 3
FIG. 5 is a side view of FIG. 3;
fig. 6 is a schematic view of the structure of a slug mated with a substrate.
Description of the reference numerals
101. A material layer; 1011. A material layer body; 1012. a dovetail; 1013. an inner arc I; 1014. a first outer arc; 1015. a material block; 1017. cooling and chip-containing grooves; 1018. chamfering grooves; 1019. side surface one
102. A substrate; 1021. a base body; 1022. a dovetail groove; 1023. a second inner arc; 1024. a second outer arc; 1025. side surface two
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the novel base body for a chamfer grinding wheel according to the structure of the embodiment of the utility model comprises a base body 1021, the base body is in a short cylindrical shape, the base body is provided with a central hole for connecting with a driving shaft of equipment, the outer circumferential surface of the base body is provided with a material layer, the outer circumferential surface of the base body is provided with dovetail grooves 1022, the length direction of the dovetail grooves is the same as the direction of the central line of the hole of the base body, the opening ends of the dovetail grooves are in transitional connection with the arc of the outer circumferential surface of the base body through an outer arc II 1024, the groove bottoms of the dovetail grooves are in transitional connection with the arc of the side surfaces of the dovetail grooves through an inner arc II 1023, the dovetail grooves are arranged on the outer circumference of the base body at intervals, and each dovetail groove penetrates through two end faces of the base body. Preferably, the second outer arc 1024 is tangent to connect the second side surface and the outer circumferential surface of the base, the second inner arc is tangent to connect the second side surface and the groove bottom, the width of the opening of the dovetail groove is smaller than the width of the groove bottom, and the second side surface is obliquely arranged. By adopting the matrix structure, the material layer is removed from the outer circumferential surface attached to the matrix body and is also distributed in the dovetail groove, because the opening width of the dovetail groove is smaller than the width of the groove bottom, and the side wall of the dovetail groove is provided with the side surface two and the inner arc two 1023 which are obliquely arranged, the material layer is not only distributed on the outer circumferential surface of the matrix body, but also distributed in the dovetail groove, the shape matched with the shape of the inner surface of the groove of the dovetail groove is formed in the dovetail groove, the oblique side surface two prevents the material layer from falling off from the dovetail groove, the inner arc two can promote to contain more material layers or viscose, and the firmness of the connection of the material layer and the matrix is improved. The outer circular arcs 1024 are arranged between the opening and the side surfaces of the dovetail groove, and the side surfaces are connected with the outer circular arcs in a tangent mode, so that the side wall of the dovetail groove is in an S shape, space for expansion and contraction is provided for expansion and contraction, stress between a material layer and a base body is reduced, when the base body is manufactured through a sintering process, corner falling caused by expansion and contraction of heat and cracks at the edges or at the side surfaces can be prevented, the integral strength of the base body is enhanced, and the yield is improved. When the adhesive connection is adopted, the surface combined with the material layer can be further increased, the bonding firmness is improved, when the adhesive connection is only adopted in a plug-in matching manner, larger dislocation between the material layer and the substrate can be allowed, and the installation convenience is improved.
When the material layer is connected by adopting a bonding mode, the material layer is required to be provided with a matched structure. The material layer 101 can be annular integral or split, when a split material layer is adopted, the material layer is composed of a plurality of arc-shaped material blocks, the radiuses of the material blocks are equal, the material blocks are adjacent end to form an annular material layer body 1011, gaps can be arranged between the adjacent material blocks, the gaps form cooling and chip containing grooves 1017 for circulating cooling liquid and containing grinding chips, a dovetail 1012 is arranged on the inner arc surface of each material block, the bottom of each dovetail 1012 is in smooth transition connection with the inner arc surface of the corresponding material block through an outer arc 1014, an inner arc 1013 is arranged at the edge of the end of the dovetail, the inner arc 1013 is tangentially connected with the side surface 1019 of the dovetail and the end of the dovetail, and the outer arc 1014 is tangentially connected with the side surface and the inner arc surface of the material block.
The size and the shape of the dovetail on the material layer are matched with those of the dovetail groove on the base body, the dovetail is inserted into the dovetail groove, the first internal arc 1013 of the dovetail is positioned in the second internal arc 1023 of the dovetail, the second external arc 1024 of the dovetail is positioned in the first external arc 1014 of the dovetail, and the dovetail groove is connected with the dovetail in a transition fit or interference fit mode. In the case of interference fit, the gap between the dovetail grooves of the dovetail may be increased by expanding or reducing the size of the dovetail or the dovetail groove by heating or cooling the base body, and the side surface may be fitted. However, no matter interference fit or transition fit, the radius of the first inner arc 1013 of the dovetail is smaller than the radius of the second inner arc 1023 of the dovetail, so that the first inner arc and the second inner arc are matched to form more spaces for containing glue, the radius of the second outer arc 1024 of the dovetail is smaller than the radius of the first inner arc 1014 of the dovetail, so that the first inner arc and the second outer arc which are connected with the first side surface 1019 of the dovetail and correspond to each other are tangent to the first side surface and the second side surface, the second side surface 1025 of the dovetail is connected with the second inner arc and the second outer arc and tangent to the second side surface, and when the dovetail is located in the dovetail, the first side surface and the second side surface are parallel or inclined to each other. By adopting the matching structure of the first inner arc and the second inner arc and the matching structure of the first outer arc and the second outer arc, when the dovetail groove and the dovetail groove are in interference fit, can reduce the obstruction at the corner, ensure that the dovetail groove of the dovetail is inserted and connected more smoothly, has more spacious space for containing the dovetail, reduces the matching requirement between the dovetail groove and the dovetail groove, reduces the manufacturing cost and the installation difficulty, but the quality of the grinding wheel is not affected, when the dovetail and the dovetail groove are in transition fit, and the substrate and the material layer are bonded and connected by the aid of the electric glue solution or the viscose solution, the first inner arc of the dovetail and the second inner arc of the dovetail groove as well as the first outer arc of the dovetail and the second outer arc of the dovetail groove can form a larger space for containing glue solution, so that the bonding strength is increased, and the glue solution overflowing due to the matched extrusion between the dovetail and the dovetail groove can be contained, so that the overflow of the glue solution is reduced, and the workload of cleaning the glue solution in the subsequent process is reduced.
Preferably, the difference between the radii of the first inner arc and the second inner arc is 0.05-0.1mm, the difference between the radii of the first outer arc and the second outer arc is 0.05-0.1mm, the radius of the first inner arc is larger than that of the first outer arc, and the radius of the second inner arc is larger than that of the second outer arc. The radius of the first inner arc 1013 is larger than that of the first outer arc, and the radius of the first outer arc 1014 is smaller than that of the second outer arc, so that the dovetail and the dovetail groove can be smoothly positioned during installation, and the installation operation is more convenient.
Preferably, a knurling structure is provided on the outer circumferential surface of the base body to increase the roughness of the entire outer circumferential surface of the base body, or the outer circumferential surface thereof is subjected to sand blasting. The sandblasting or chamfering structures are distributed at the smooth surface of the flat outer circumferential surface and in the dovetail grooves.
Preferably, the inclination angle between the second side surface and the groove bottom is 30-45 degrees, the radius of the second inner arc is 0.3-0.5mm, the radius of the second outer arc is 0.5-0.8mm, and the length of the second side surface is 1.5-1.8 mm. By adopting the structure, the dovetail groove has small contact area with the dovetail on the material layer, is easy to insert, increases the contact surface of the dovetail and the dovetail groove, can hold more glue solution in the outer circular arc II, and has firmer bonding. The radius of the inner circular arc II and the radius of the outer circular arc II of the substrate of the structure are both larger than the radius of a process fillet formed in the process, the radius of the inner circular arc II and the radius of the outer circular arc II are mainly increased, the length of a matching surface is increased under the condition that the depth of a dovetail groove is not increased, the connection firmness is increased, and the substrate is favorable for installation and can contain glue solution to further increase the connection firmness.
The specific examples are merely illustrative of the utility model and are not intended to be limiting.
Claims (7)
1. The utility model provides a novel base member for chamfer emery wheel, includes base member body (1021), its characterized in that is provided with the dovetail on base member body, and the one end of the side surface two of dovetail is connected with base member body's outer peripheral surface through outer arc two (1024), and its other end is connected with the tank bottom of dovetail through interior arc two, and the radius of interior arc two is greater than the radius of technology fillet for hold the bed of material and glue solution.
2. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: the inclination angle between the second side surface and the groove bottom is 30-45 degrees.
3. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: the radius of the second inner arc is 0.3-0.5mm, the radius of the second outer arc is 0.5-0.8mm, and the length of the second side surface is 1.5-1.8 mm.
4. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: the second inner arc and the second outer arc are respectively tangent with the side surface.
5. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: and sand blasting layers are arranged on the outer surface of the base body and in the dovetail grooves.
6. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: knurls are arranged on the outer surface of the base body and in the dovetail groove.
7. The novel substrate for a chamfering grinding wheel according to claim 1, characterized in that: the dovetail groove is a through groove and is arranged along the axial direction of the base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105928.4U CN216179717U (en) | 2021-09-02 | 2021-09-02 | Novel matrix for chamfer grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105928.4U CN216179717U (en) | 2021-09-02 | 2021-09-02 | Novel matrix for chamfer grinding wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216179717U true CN216179717U (en) | 2022-04-05 |
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ID=80918527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122105928.4U Active CN216179717U (en) | 2021-09-02 | 2021-09-02 | Novel matrix for chamfer grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216179717U (en) |
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2021
- 2021-09-02 CN CN202122105928.4U patent/CN216179717U/en active Active
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