CN211439525U

CN211439525U - Emery grinding wheel

Info

Publication number: CN211439525U
Application number: CN201922391533.8U
Authority: CN
Inventors: 夏永光; 王芳
Original assignee: Zhejiang Xingxing Technology Co ltd
Current assignee: Jiangxi Star Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-08
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a emery wheel belongs to glass panels processing cutter technical field. In order to solve the problems of single grinding wheel and low efficiency in the prior art, the emery wheel comprises a grinding wheel body, wherein one end of the grinding wheel body is provided with a tool bit structure, the other end of the grinding wheel body is provided with a tool handle, the tool bit structure comprises a first grinding head and a second grinding head, the first grinding head is positioned at the outer end of the grinding wheel body, and the second grinding head is positioned at the inner side of the first grinding head; the first grinding head comprises a bottom and a side wall, and the side wall is connected with the bottom through a first arc chamfer; the second grinding head comprises a circumferential groove, the circumferential groove is provided with a groove bottom, a first circumferential side wall located on one side close to the grinding head and a second circumferential side wall located on one side far away from the grinding head, the first circumferential side wall and the groove bottom are in transition connection through a second arc chamfer, and the second circumferential side wall and the groove bottom are in transition connection through a third arc chamfer. Have machining efficiency fast, and adopt integral type gang tool to need not to change the emery wheel in addition, the operation is more convenient, realizes having the effect at the inside and outside R angle of processing concurrently.

Description

Emery grinding wheel

Technical Field

The utility model relates to a emery wheel belongs to glass panels processing cutter technical field.

Background

With the development of science and technology and the gradual upgrade of the intelligent industry, the elimination of common watches becomes diversified intelligent watches, and the intelligent watch industry is continuously expanded; consumers have increasingly demanded the appearance, color, performance, etc. of products. For the demands of market consumers, the wearing series of waterproof is required to be higher and higher, so that the processing difficulty of the glass cover plate is higher. The CNC machining of the 3D vertical angle of cold machining is also more complex, for the traditional mode, hot forming is usually directly adopted, the inner R angle of machining is larger, the forming is not easy to occur, the attractiveness is affected, and the size of the inner R angle of a product can be better controlled through the cold machining mode, so that the attractiveness of the product is achieved. However, most of the conventional grinding wheel tools are used for machining the outer R-angle, and the number of grinding wheels for machining the inner R-angle is small. For example, the outer R corner is machined by arranging a plurality of groups of grooves for arc chamfering on the surface of a cutter, for example, a grinding wheel cutter disclosed in chinese patent (publication No. CN209305211U), the outer wall of the cutter body is provided with a plurality of groups of trapezoidal cutter bits to realize a machining mode of overlapping a plurality of pieces of glass, thereby achieving the performance of improving the machining efficiency.

Disclosure of Invention

The utility model discloses to the problem that exists among the above prior art, provide a emery wheel, the problem of solution how to have the integral type tool bit structure at the inside and outside R angle of processing concurrently, simple structure and machining efficiency height.

The utility model aims at realizing the following technical scheme, a emery wheel, including the emery wheel body that is the round bar shape, one end of emery wheel body has the tool bit structure, the other end of emery wheel body is the handle of a knife, its characterized in that, the tool bit structure includes bistrique one that is used for processing interior R angle and bistrique two that is used for processing outer R angle, bistrique one is located the outer end of emery wheel body, bistrique two on the emery wheel body is located the inboard of bistrique one; the first grinding head comprises a planar bottom and a peripheral cylindrical side wall, and the side wall and the bottom are in transition connection through a circular arc chamfer I which can be matched with an inner R angle; the second grinding head comprises a circumferential groove with a trapezoidal section, the circumferential groove is provided with a groove bottom, a first circumferential side wall located close to one side of the grinding head and a second circumferential side wall located far away from one side of the grinding head, the first circumferential side wall and the groove bottom are in transition connection through an arc chamfer angle which can be matched with an outer R angle, and the second circumferential side wall and the groove bottom are in transition connection through an arc chamfer angle which can be matched with the outer R angle.

The bottom of the outer end of one end of the grinding wheel body is in a plane shape, and the bottom of the grinding head I is in transition connection with the side wall through the arc chamfer I which can be matched with the inner R angle, so that during machining, the plane shape of the bottom can be abutted against the surface of the back face of a machined surface cover, and the arc chamfer I is matched with the inner R angle for machining the back face of the surface cover, so that the machining of the inner R angle is completed; simultaneously, two lateral walls and the tank bottom of the trapezoidal bistrique II that sets up in the inboard all pass through circular arc transitional coupling, add man-hour, can realize simultaneously a plurality of outer R angles of table lid periphery one-time machine-shaping, equivalent to realized the fashioned effect of a sword, it is fast to have machining efficiency, and adopts this kind of integral type gang tool to need not to change the emery wheel in addition, and it is more convenient to operate, also can realize having the advantage of processing inside and outside R angle concurrently.

In the above-mentioned emery wheel, outwards bellied cyclic annular boss has between bistrique one and the bistrique two, the one side that cyclic annular boss is located bistrique two sides is the circumference lateral wall one of bistrique two, through four transitional coupling of chamfer between the lateral wall of circumference lateral wall one and cyclic annular boss, the cross-sectional line length of circumference lateral wall one is greater than the cross-sectional line length of circumference lateral wall two. Because the outside chamfer of table lid adds man-hour, can extend to the front of table lid, through making circumference lateral wall one have longer inclined plane, can more effectual laminating to the table lid surface, realize better effect of polishing, this long inclined plane also can have the effect of polishing smoothly to the circumference below the table lid when processing the chamfer concurrently, makes and can embody better stereoeffect.

In the emery wheel, an included angle formed between the first circumferential side wall and the bottom of the groove is 135 degrees; and an included angle formed between the second circumferential side wall and the groove bottom is 135 degrees. The phenomenon of edge breakage during processing of the outer R corner can be improved, the processing stability is improved, and the quality and the yield of a processed product are ensured.

In the emery wheel, the bottom of the first grinding head is provided with a cross-shaped groove which transversely penetrates through the emery wheel. Because during processing, the bottom of the whole grinding wheel always contacts with the surface of the back surface of the surface cover, the grinding wheel generates heat during grinding, and the machined product is easily damaged by thermal deformation and the like if the heat is too large. Therefore, the grooves with the shapes of Chinese character 'kai' at the bottoms penetrate through the grooves, so that the size of the first grinding head is reduced, and the grinding liquid can be distributed in the grooves through the grooves, and the cooling effect is improved.

In the emery wheel, the first arc chamfer comprises an arc section and an inclined section which inclines upwards, one end of the arc section is in smooth transition connection with the bottom of the first grinding head, the other end of the arc section is in smooth transition connection with one end of the inclined section, and the other end of the inclined section is connected with the side wall of the first grinding head. Through making the outside be the slope form, R angle in the processing that can be better, and the processing of outside department can guarantee to have better sharp requirement of lines.

In the above corundum abrasive wheel, the tool bit structure further comprises a third grinding head, the third grinding head is located on the upper side of the second grinding head, an inward concave annular groove is formed between the third grinding head and the second grinding head, the third grinding head is cylindrical, and a corundum layer is arranged on the circumferential surface of the third grinding head. Can provide the circumference rough machining process of table lid lateral wall through this bistrique, make the surface be equipped with the gold steel sand layer, more be favorable to improving rough machining efficiency.

To sum up, compare with prior art, the utility model has the advantages of it is following:

through the structural design of the first grinding head and the second grinding head, the first grinding head is in transition connection with the arc chamfer angle between the bottom and the side wall through the arc chamfer angle which can be matched with the inner R angle, the inner R angle which can be used for processing the back surface of the surface cover is matched, the two side walls and the tank bottom of the trapezoidal grinding head are in transition connection through arcs, a plurality of outer R angles can be processed simultaneously to realize one-time processing forming, which is equivalent to realizing the effect of one-step forming, the processing efficiency is high, the grinding wheel does not need to be replaced additionally by adopting the integrated combined tool, the operation is more convenient and fast, the effect of processing the inner R angle and the outer R angle can be realized, cold processing can be adopted to realize the processing forming of the inner R angle which is suitable for small size, and the.

Drawings

FIG. 1 is a schematic structural diagram of a present steel grit grinding wheel.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Fig. 4 is a schematic bottom view of the structure of fig. 1.

FIG. 5 is a schematic view showing the condition of the emery wheel when machining the R angle in the back surface of the front cover.

FIG. 6 is a schematic view of the condition of the present emery wheel when machining the outer R-angle of the cover.

FIG. 7 is a schematic view showing the state of a present emery wheel in processing the outer edge of the cover.

In the figure, 1, a grinding wheel body; 11. grinding a first head; 111. a bottom; 112. a side wall; 113. Chamfering a first arc; 114. a groove; 115. a circular arc section; 116. an inclined section; 12. a second grinding head; 121. the bottom of the tank; 122. a first circumferential side wall; 123. a second circumferential side wall; 124. arc chamfering II; 125. chamfering with a third arc; 13. an annular boss; 131. chamfering the arc; 14. a grinding head III; 15. an annular groove; 16. a knife handle.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the following specific embodiments and drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1-4, the sendust grinding wheel includes a grinding wheel body 1 in a shape of a round bar, one end of the grinding wheel body 1 has a tool bit structure, the other end of the grinding wheel body 1 is a tool holder 16, the tool holder 16 can be used to fix a grinding wheel mounting portion, such as a CNC machining setting, and how to mount and fix the grinding wheel, a general method in the art is adopted, more importantly, the tool bit structure includes a first grinding head 11 for machining an inner R angle and a second grinding head 12 for machining an outer R angle, the first grinding head 11 is located at an outer end of the grinding wheel body 1, the second grinding head 12 on the grinding wheel body 1 is located at an inner side of the first grinding head 11, where the positions of the first grinding head 11 and the second grinding head are equivalent to structural features that are sectionally distributed on the grinding wheel body 1 from bottom to top as shown in fig. 1, that is, the lower section of the grinding wheel body 1 is the first grinding head 11, followed by structural design of, the second grinding head 12 is distributed on one section of the inner side of the first grinding head 11 on the grinding wheel body 1, and the integrated structure design is favorable for subsequent processing; the grinding head I11 comprises a planar bottom 111 and a peripheral cylindrical side wall 112, the side wall 112 and the bottom 111 are in transitional connection through a circular arc chamfer I113 which can be matched with an inner R angle, the inner R angle preferably refers to the processing of the inner R angle on the back when the watch flat cover is processed, the radian requirement of the circular arc chamfer I113 can be adjusted according to the actual requirement for the size of the R angle, preferably, the R of the inner R angle is more than or equal to 1mm, and the cold working forming of the smaller inner R angle is realized; the second grinding head 12 comprises a circumferential groove with a trapezoidal section, the circumferential groove is provided with a groove bottom 121, a first circumferential side wall 122 close to the first grinding head 11 side and a second circumferential side wall 123 far away from the first grinding head 11 side, the first circumferential side wall 122 and the groove bottom 121 are in transitional connection through a second arc chamfer 124 capable of being matched with an outer R angle, the second circumferential side wall 123 and the groove bottom 121 are in transitional connection through a third arc chamfer 125 capable of being matched with the outer R angle, the two outer R angles are machined and polished equivalently to the R angle of the peripheral edge of the surface cover, one-step forming can be achieved through machining, and machining efficiency is improved.

In a further scheme, an annular boss 13 protruding outwards is arranged between the first grinding head 11 and the second grinding head 12, one surface, located on the second grinding head 12 side, of the annular boss 13 is a first circumferential side wall 122 of the second grinding head 12, the first circumferential side wall 122 and the outer side wall of the annular boss 13 are in transitional connection through a fourth chamfer 131, and the length of the cross section line of the first circumferential side wall 122 is greater than that of the second circumferential side wall 123. The chamfer lines capable of achieving smooth transition can be machined to form an outward boss, the inclined plane of the first circumferential side wall 122 can be made to be longer, the first circumferential side wall can be better attached to the outer peripheral surface of the meter cover, the front edge of the meter cover can achieve the effect of one-step forming, the chamfer angle of the fourth circumferential side wall 122 is also made to be 131, and the effect of smooth transition can be better formed. Here, a right-angle chamfer can be further formed between the lower side of the annular boss 13 and the side wall of the grinding head I11. Furthermore, the included angle formed between the first circumferential side wall 122 and the groove bottom 121 is preferably 135 degrees; an included angle formed between the second circumferential side wall 123 and the groove bottom 121 is 135 degrees. Because the outer edge of the meter cover is smaller, the adoption of the included angle requirement is more favorable for avoiding the phenomenon of edge breakage in the processing process, and the processing efficiency and the products are not easy to be damaged.

Further, as shown in fig. 1 and 4, it is preferable that the bottom 111 of the first grinding head 11 has a cross-shaped groove 114 extending transversely therethrough. The cooling effect is improved, the overheating phenomenon during machining is avoided, the depth of the cross-shaped groove 114 can be set to the position of the grinding head I11 close to the annular boss 13, heating can be reduced better, and the cooling effect is improved. The width of the groove 114 is preferably about 2mm, the bottom of the first grinding head 11 is divided into four basically identical fan-shaped structures through the cross-shaped groove 114, and the bottom of each fan-shaped structure is flat; with reference to fig. 3, the first arc chamfer 113 further includes an arc segment 115 and an inclined segment 116 inclined upward, one end of the arc segment 115 is in smooth transition connection with the bottom 111 of the first grinding head 11, the other end of the arc segment 115 is in smooth transition connection with one end of the inclined segment 116, and the other end of the inclined segment 116 is connected with the side wall 112 of the first grinding head 11.

As a further embodiment, the tool bit structure further includes a grinding head three 14, the grinding head three 14 is located on the upper side of the grinding head two 12, which is equivalent to the structural arrangement of the grinding head 111, the grinding head two 12 and the grinding head three 14, which are sequentially arranged and designed on the grinding wheel body 1 from bottom to top, an inward concave annular groove 15 is formed between the grinding head three 14 and the grinding head two 12, the annular groove 15 is designed to be distributed clearly and avoid dislocation, the grinding head three 14 is cylindrical, a gold steel sand layer is arranged on the circumferential surface of the grinding head three 14, and a surface gold steel sand layer of # 400 is preferred on the surface of the gold steel sand layer.

When the corundum abrasive wheel is used for processing, the corundum abrasive wheel is assembled on a CNC processing device, as shown in figure 5, when the back surface of a surface cover is processed, the back surface of the surface cover is contacted with the bottom of a grinding head I11 of the corundum abrasive wheel, the planar characteristic of the bottom can be better abutted against the surface of the back surface of the surface cover, the surface is moved or rotated and ground along the position of an inner R angle processed by the surface cover so as to achieve the processing and forming of the inner R angle, for the processing of an outer R angle, the aim of processing and forming of the outer R angle of the surface cover by abutting the outer edge of the surface cover in a trapezoidal groove of a grinding head II 12 with the front surface of the surface cover downward abutted against a circumferential side wall I122 and abutting two circumferential positions of the edge respectively against an arc chamfer II 124 and an arc chamfer III 125 is fulfilled by rotating the corundum abrasive wheel during processing, and during the processing of a grinding head III 14, as shown in fig. 7, the edge of the surface cover is directly contacted with the surface of the grinding head three 14 for grinding, so as to achieve the purpose of surface rough machining, and the machining and forming of the inner and outer R corners of the product are completed. The rapid machining efficiency of one-blade forming can be realized when the external R angle is machined by adopting the steel grit grinding wheel, the advantage of high machining efficiency is achieved, the machining of the internal and external R angles can be realized by adopting one steel grit grinding wheel, and the use and the operation are more favorably realized.

The embodiments described in this application are intended to be illustrative only of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.

Claims

1. A emery grinding wheel comprises a grinding wheel body (1) in a round rod shape, wherein one end of the grinding wheel body (1) is provided with a tool bit structure, and the other end of the grinding wheel body (1) is provided with a tool handle (16), the emery grinding wheel is characterized in that the tool bit structure comprises a first grinding head (11) used for machining an inner R angle and a second grinding head (12) used for machining an outer R angle, the first grinding head (11) is positioned at the outer end of the grinding wheel body (1), and the second grinding head (12) on the grinding wheel body (1) is positioned on the inner side of the first grinding head (11); the grinding head I (11) comprises a planar bottom (111) and a peripheral cylindrical side wall (112), and the side wall (112) and the bottom (111) are in transition connection through a first arc chamfer (113) which can be matched with an inner R angle; bistrique two (12) are the circumference recess of trapezium shape including the cross-section, the circumference recess has tank bottom (121), is located the circumference lateral wall one (122) that is close to bistrique one (11) side and is located the circumference lateral wall two (123) of keeping away from bistrique one (11) side, through can with outer R angle phase-match's circular arc chamfer two (124) transitional coupling between circumference lateral wall one (122) and tank bottom (121), through can with outer R angle phase-match's circular arc chamfer three (125) transitional coupling between circumference lateral wall two (123) and tank bottom (121).

2. The emery wheel according to claim 1, wherein an outwardly convex annular boss (13) is provided between the first grinding head (11) and the second grinding head (12), one surface of the annular boss (13) on the second grinding head (12) side is a first circumferential side wall (122) of the second grinding head (12), the first circumferential side wall (122) and an outer side wall of the annular boss (13) are in transitional connection through a fourth arc chamfer (131), and a length of a section line of the first circumferential side wall (122) is greater than that of the second circumferential side wall (123).

3. The emery wheel of claim 2, wherein said first circumferential side wall (122) forms an angle of 135 degrees with the groove bottom (121); and an included angle formed between the second circumferential side wall (123) and the groove bottom (121) is 135 degrees.

4. A corundum grinding wheel according to claim 1, characterized in that the bottom (111) of said first grinding head (11) has crosswise through grooves (114) in the shape of a cross.

5. The emery wheel according to claim 1, wherein said first rounded chamfer (113) includes a circular arc segment (115) and an inclined segment (116) inclined upward, one end of said circular arc segment (115) is in smooth transition connection with the bottom (111) of said first grinding head (11), the other end of said circular arc segment (115) is in smooth transition connection with one end of said inclined segment (116), and the other end of said inclined segment (116) is connected with the side wall (112) of said first grinding head (11).

6. A emery wheel according to any one of claims 1 to 5, wherein said head structure further includes a grinding head three (14), said grinding head three (14) being located on an upper side of the grinding head two (12), an annular recess (15) being inwardly recessed being provided between the grinding head three (14) and the grinding head two (12), said grinding head three (14) being cylindrical, and a circumferential surface of said grinding head three (14) being provided with a layer of emery.