Grinding head with chip removal opening

Abstract

The grinding head comprises a base body and a grinding part arranged at one end of the base body, a chip containing groove is formed in the center of the end of the grinding part, an annular grinding face is arranged at the edge of the end of the grinding part and surrounds a groove opening of the chip containing groove, and the chip discharging opening is formed in the side wall of the grinding part. The chip removal opening communicates with the chip containing groove to form a chip removal channel, and a diamond layer is arranged on the surface of the grinding part. Compared with a traditional cross-shaped groove grinding head, the chip containing groove formed in the center of the end of the grinding part is larger than a cross-shaped groove in volume, the size of a chip removal channel is increased, the chip removal effect is improved, chips are prevented from scratching products, and the grinding machining precision is improved; and the overall strength of the polishing part is also ensured, and the situation of edge breakage at the edge position can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tool processing, and specifically, to a grinding head with a chip discharge port. Background Art

[0002] With the development of technology, intelligent electronic products such as smart phones and tablet computers play an increasingly important role in people's lives. Components such as the touch screens and back covers of intelligent electronic products need to be polished to make their surfaces flat and smooth to obtain a good appearance. However, grinding debris will be generated during the grinding process. If the grinding debris is not discharged in time, it will seriously affect the grinding quality of the products. Nowadays, there are already grinding heads that can achieve the chip discharge function. For example, a sintered diamond grinding head disclosed in the publication number CN210616182U has a cross groove provided at the end of the grinding part to accommodate the grinding debris, and the grinding debris is discharged through the center and the outer end of the cross groove. However, the cross groove divides the end of the grinding part into four independent areas, resulting in a decrease in the overall strength of the grinding part, especially at the edge position of the grinding part, which is particularly obvious. During the grinding operation, the edge position of the grinding part often cracks, which not only affects the service life of the grinding head, but also causes the products being processed to be scrapped, increasing material consumption. Summary of the Utility Model

[0003] In view of the deficiencies of the prior art, the present application provides a grinding head with a chip discharge port.

[0004] A grinding head with a chip discharge port disclosed in the present application includes: a base body and a grinding part provided at one end of the base body. A chip receiving groove is opened at the center position of the end of the grinding part. An annular grinding surface is provided at the edge position of the end of the grinding part, and the grinding surface surrounds the notch of the chip receiving groove. A chip discharge port is opened on the side wall of the grinding part. The chip discharge port is communicated with the chip receiving groove to form a chip discharge channel, and a diamond layer is provided on the surface of the grinding part.

[0005] Preferably, the ratio of the radius of the notch of the chip receiving groove to the radius of the end of the grinding part is 1:(1.5 - 2).

[0006] Preferably, the ratio of the radius of the notch of the chip receiving groove to the radius of the end of the grinding part is 41:60.

[0007] Preferably, the number of the chip discharge ports is multiple, and the multiple chip discharge ports are sequentially arranged in a ring on the side wall of the grinding part, and all the multiple chip discharge ports are communicated with the chip receiving groove.

[0008] Preferably, the number of the chip discharge ports is two, the two chip discharge ports are arranged oppositely and are respectively communicated with the chip receiving groove, and the chip discharge channel penetrates through the grinding part.

[0009] Preferably, the shape and size of the chip discharge channel are adapted to the chip discharge port.

[0010] Preferably, the inner wall of the chip groove is an arc surface.

[0011] Preferably, the grinding surface is provided with grinding rounded corners.

[0012] Preferably, the chip discharge port is a strip-shaped port, and the opening direction of the chip discharge port is perpendicular to the central axis of the base body.

[0013] Preferably, the surface of the grinding part is provided with a brazing layer, and the brazing layer has a uniform diamond layer.

[0014] The beneficial effects of the present application are as follows: When grinding operations are carried out, the grinding surface contacts the product to be processed for grinding. The chips generated during the grinding process will be accommodated in the chip groove and discharged through the chip discharge port via the chip discharge channel, avoiding the chips from affecting the grinding quality of the product. At the same time, the grinding head rotates around the central axis of the base body, and the central axis of the base body passes through the center of the grinding surface. When the grinding head rotates for grinding, since the grinding surface is a circular integral body, the overall strength is improved. The force on each part of the grinding surface is uniform and the overall strength is large, which can effectively avoid the situation of chipping at the edge position, extend the service life and improve the processing quality. Thus, compared with the traditional cross-slot grinding head, the chip groove opened at the center position of the end of the grinding part has a larger volume than the cross-slot, increasing the volume of the chip discharge channel, improving the chip discharge effect, avoiding the chips from staying and scratching the product, improving the grinding processing accuracy, and the circular integral grinding surface, without having multiple notches at the edge like the cross-slot grinding head, also ensures the overall strength of the grinding part and can effectively avoid the situation of chipping at the edge position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0016] Figure 1 is a schematic structural diagram of a grinding head with a chip discharge port in the embodiment;

[0017] Figure 2 is a schematic structural diagram of the grinding part in the embodiment;

[0018] Figure 3 is a bottom view of the grinding part in the embodiment;

[0019] Figure 4 is a front view of the grinding head with a chip discharge port in the embodiment;

[0020] Figure 5 is another schematic structural diagram of the grinding head with a chip discharge port in the embodiment.

[0021] Reference Signs:

[0022] 1. Substrate; 2. Grinding part; 21. Chip groove; 211. Arc surface; 22. Grinding surface; 23. Chip discharge port; 231. Straight edge; 232. Arc edge. Detailed implementation manners

[0023] The following will disclose multiple implementation manners of the present application with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present application. That is to say, in some implementation manners of the present application, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0024] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the attached drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0025] In addition, in the present application, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present application. It is only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0026] In order to further understand the application content, features and effects of the present application, the following embodiments are exemplified and described in detail with reference to the attached drawings as follows.

[0027] Refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of a grinding head with a chip discharge port in the embodiment, Figure 2 is a schematic structural diagram of the grinding part in the embodiment. The grinding head with a chip discharge port in this embodiment includes a substrate 1 and a grinding part 2 provided at one end of the substrate 1. A chip groove 21 is opened at the central position of the end of the grinding part 2, and an annular grinding surface 22 is provided at the edge position of the end of the grinding part 2. The grinding surface 22 surrounds the notch of the chip groove 21. A chip discharge port 23 is opened on the side wall of the grinding part 2. The chip discharge port 23 is communicated with the chip groove 21 to form a chip discharge channel, and the surface of the grinding part 2 has a diamond layer.

[0028] The grinding head with a chip discharge port in this embodiment is used for grinding the glass or ceramic back cover of electronic products. The base body 1 is a grinding head connecting rod for connecting with CNC equipment. The surface of the grinding part 2 has a diamond layer for grinding the back cover. When grinding, the grinding surface 22 contacts the product to be processed for grinding. The chips generated during the grinding process will be accommodated in the chip receiving groove 21 and discharged through the chip discharge channel by the chip discharge port 23, avoiding the chips from affecting the grinding quality of the product. At the same time, the grinding head rotates around the central axis of the base body 1, and the central axis of the base body 1 passes through the center of the grinding surface 22. When the grinding head rotates for grinding, since the grinding surface 22 is an annular whole, the overall strength is improved, the force on each part of the grinding surface 22 is uniform, and the overall strength is large, which can effectively avoid the situation of chipping at the edge position, extend the service life and improve the processing quality.

[0029] Refer to Figure 3 , Figure 3 Fig. is the bottom view of the grinding part in the embodiment. Preferably, the ratio of the radius of the notch of the chip receiving groove 21 to the radius of the end of the grinding part 2 is 1:(1.5 - 2). In specific applications, the larger the notch of the chip receiving groove 21, the larger the volume of the chip receiving groove 21 will be correspondingly, improving the chip discharge effect, but the area of the grinding surface 22 will be correspondingly reduced, and the overall strength will also decrease. If the notch of the chip receiving groove 21 is smaller, the volume of the chip receiving groove 21 will be correspondingly reduced, reducing the chip discharge effect, but the area of the grinding surface 22 will be correspondingly increased, and the overall strength will also increase. Therefore, the ratio of the radius of the notch of the chip receiving groove 21 to the radius of the end of the grinding part 2 is selected to be 1:(1.5 - 2). In this way, compared with the traditional cross-slot grinding head, the chip receiving groove 21 opened at the center position of the end of the grinding part 2 has a larger volume than the cross-slot, increasing the volume of the chip discharge channel, improving the chip discharge effect, avoiding the chips from staying and scratching the product, and improving the grinding accuracy. The annular integrated grinding surface 22, without having multiple notches at the edge like the cross-slot grinding head, also ensures the overall strength of the grinding part 2 and can effectively avoid the situation of chipping at the edge position.

[0030] Refer back to Figure 3 , preferably, the ratio of the radius of the notch of the chip receiving groove 21 to the radius of the end of the grinding part 2 is 41:60. In specific applications, the end of the grinding part 2 in this embodiment is approximately circular with a diameter of 12 mm, the notch of the chip receiving groove 21 is circular with a diameter of 8.2 mm, that is, the width of the annular grinding surface 22 is 1.9 mm. In this way, it can not only ensure that the notch of the chip receiving groove 21 is large enough to increase the volume of the chip discharge channel and the chip discharge effect, but also ensure that the overall strength of the grinding surface 22 is sufficient to maintain the grinding operation and avoid the situation of chipping. Of course, in other embodiments, the sizes and ratios of the grinding part 2 and the notch of the chip receiving groove 21 can be adjusted according to actual production requirements, which will not be elaborated here.

[0031] Reference Figure 4 , Figure 4 Figure 4 is the front view of the grinding head with a chip discharge port in the embodiment. Preferably, the number of chip discharge ports 23 is multiple, and the multiple chip discharge ports 23 are sequentially arranged in a ring on the side wall of the grinding part 2, and the multiple chip discharge ports 23 are all communicated with the chip receiving groove 21. Through the arrangement of the multiple chip discharge ports 23, the debris in the chip receiving groove 21 can be discharged through the multiple chip discharge ports 23, improving the chip discharge effect. Specifically, the chip discharge port 23 in this embodiment is a strip-shaped port, and the opening direction of the chip discharge port 23 is perpendicular to the central axis of the base body 1. It can be understood that the base body 1 is a long strip column, and the direction of its central axis is the longitudinal direction, while the chip discharge port 23 is a strip-shaped opening, which is arranged along the transverse direction. When the grinding part 2 is grinding, it rotates around the central axis of the base body 1. The horizontally arranged chip discharge port 23 not only facilitates the setting of a larger-diameter chip discharge port 23, but also makes the overall distance between the chip discharge port 23 and the grinding surface 22 relatively close. The debris generated during the grinding process can easily pass through the chip discharge port 23 for discharge, avoiding the accumulation of debris in the chip receiving groove 21 and improving the chip discharge effect. It should be particularly noted that during the grinding process, water can enter the chip discharge channel and the chip receiving groove 21 through the chip discharge port 23, take away the internal debris and discharge it through the chip discharge port 23. Since the overall distance between the chip discharge port 23 and the grinding surface 22 is relatively close, and the water is in a constantly flowing state in the chip discharge channel, the water can well cool the grinding surface 22, avoiding the overheating of the grinding surface 22 during the grinding process and the change of the diamond shape, thereby avoiding the decline of the grinding accuracy.

[0032] Refer back again Figure 4 , preferably, the number of chip discharge ports 23 is two, the two chip discharge ports 23 are arranged opposite to each other and are respectively communicated with the chip receiving groove 21, and the chip discharge channel penetrates through the grinding part 2. In specific application, the number of chip discharge ports 23 in this embodiment is two, and the two chip discharge ports 23 are respectively arranged on the opposite side walls of the grinding part 2, and the two chip discharge ports 23 are arranged opposite to each other, so that the chip discharge channel penetrates through the grinding part 2. The through-type chip discharge channel can not only ensure the chip discharge effect of the chip discharge channel, but also avoid the excessive number of chip discharge ports 23 affecting the overall strength of the grinding part 2. Furthermore, since the two chip discharge ports 23 are arranged opposite to each other, when manufacturing the grinding part 2, only one drilling operation needs to be performed on the side wall of the grinding part 2 to drill through the grinding part 2 to form a through-type chip discharge channel, eliminating the time required for multiple drillings and improving the manufacturing efficiency. Similarly, a chip receiving groove 21 can be formed by performing one drilling operation on the end face of the grinding part 2.

[0033] Refer to together Figure 5 , Figure 5Another schematic diagram of the grinding head with a chip discharge port in the embodiment. Preferably, the shape and size of the chip discharge channel are adapted to the chip discharge port 23. In specific applications, the chip discharge port 23 is a strip-shaped port, which includes two straight edges 231 and two arc-shaped edges 232. The two straight edges 231 are arranged in parallel. One end of each of the two arc-shaped edges 232 is connected to one end of the two straight edges 231 respectively, and the other end of each of the two arc-shaped edges 232 is connected to the other end of the two straight edges 231 respectively. And the inner wall of the chip receiving groove 21 is an arc surface 211. Specifically, the two opposite inner walls of the chip receiving groove 21 are arc surfaces 211 adapted to the arc-shaped edges 232. Compared with the flat inner wall, on the one hand, the inner wall of the chip receiving groove 21 is the arc surface 211, and the side edge of the chip discharge port 23 is the arc-shaped edge 232. Thus, when drilling the chip discharge port 23, the two opposite inner walls of the chip receiving groove 21 and the chip discharge port 23 can be drilled and formed at one time, improving the manufacturing efficiency. On the other hand, the arc surface 211 is flush with the arc-shaped edge 232, that is, no groove that is likely to detain debris is formed in the chip receiving groove 21. Thus, the debris generated by grinding will not be stuck in the groove and can be discharged from the chip discharge port 23 by water through the chip discharge channel in time, improving the chip discharge effect.

[0034] Refer back to Figures 1-5 , preferably, a grinding fillet is provided on the surface of the grinding surface 22. The grinding fillet is also annular. By setting the grinding fillet, not only can the thickness of the grinding surface 22 be increased to enhance its overall strength, reduce the situation of chipping, and extend the service life, but also the contact area between the grinding surface 22 and the product can be reduced, which is applicable to fine grinding processing. Further, the side wall of the grinding part 2 also has a diamond layer. That is to say, in this embodiment, the grinding head with a chip discharge port can also use the side wall of the grinding part 2 to grind the product, broadening the application scenario.

[0035] Refer back to Figures 1-5 , preferably, a brazing layer is provided on the surface of the grinding part 2, and the brazing layer has a uniform diamond layer. It can be understood that in this embodiment, the diamond layer is attached to the surface of the grinding part 2 by a brazing process. The diamond in the brazing layer is evenly distributed, which can effectively improve the grinding accuracy. At the same time, combined with the chip discharge channel formed by the connection of the chip discharge port 23 and the chip receiving groove 21, the debris generated by grinding can be effectively discharged, avoiding the debris scraping the surface of the product and affecting the product quality, and further improving the grinding accuracy. Of course, in other embodiments, a sintered diamond layer can also be formed on the surface of the grinding part 2 according to actual needs to improve the wear resistance of the grinding head.

[0036] In summary, when performing the grinding operation, the grinding surface 22 contacts the product to be processed for grinding. The debris generated during the grinding process will be accommodated in the chip accommodating groove 21 and discharged through the chip discharging channel by the chip discharging port 23, avoiding the influence of the debris on the grinding quality of the product. At the same time, the grinding head rotates with the central axis of the base body 1 as the rotation axis, and the central axis of the base body 1 passes through the center position of the grinding surface 22. When the grinding head rotates for grinding, since the grinding surface 22 is an annular whole, the overall strength is improved. The force on each part of the grinding surface 22 is uniform and the overall strength is large, which can effectively avoid the situation of chipping at the edge position, prolong the service life and improve the processing quality. Thus, compared with the traditional cross-slot grinding head, the chip accommodating groove 21 opened at the center position of the end of the grinding part 2 has a larger volume than the cross-slot, increasing the volume of the chip discharging channel, improving the chip discharging effect, avoiding the retention and scratching of the product by the debris, and improving the grinding processing accuracy. And the annular integrated grinding surface 22, without having multiple notches at the edge like the cross-slot grinding head, also ensures the overall strength of the grinding part 2 and can effectively avoid the situation of chipping at the edge position.

[0037] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A grinding head with a chip discharge port, characterized in that, Comprising: a substrate (1) and a grinding part (2) provided at one end of the substrate (1), a chip accommodating groove (21) is formed at the central position of the end of the grinding part (2), an annular grinding surface (22) is arranged at the edge position of the end of the grinding part (2), the grinding surface (22) surrounds the notch of the chip accommodating groove (21), a chip discharging port (23) is formed in the side wall of the grinding part (2), the chip discharging port (23) is communicated with the chip accommodating groove (21) to form a chip discharging channel, and a diamond layer is provided on the surface of the grinding part (2).

2. The grinding head with a chip discharge port according to claim 1, characterized in that, The ratio of the radius of the notch of the chip accommodating groove (21) to the radius of the end of the grinding part (2) is 1:(1.5 - 2).

3. The grinding head with a chip discharge port according to claim 2, characterized in that, The ratio of the radius of the notch of the chip accommodating groove (21) to the radius of the end of the grinding part (2) is 41:

60.

4. The grinding head with a chip discharge port according to claim 1, characterized in that, The number of the chip discharging ports (23) is multiple, and the multiple chip discharging ports (23) are sequentially arranged in a ring on the side wall of the grinding part (2), and the multiple chip discharging ports (23) are all communicated with the chip accommodating groove (21).

5. The grinding head with a chip discharge port according to claim 4, characterized in that, The number of the chip discharging ports (23) is two, the two chip discharging ports (23) are arranged opposite to each other and are respectively communicated with the chip accommodating groove (21), and the chip discharging channel penetrates through the grinding part (2).

6. The grinding head with a chip discharge port according to claim 5, characterized in that, The shape and size of the chip discharging channel are adapted to the chip discharging port (23).

7. The grinding head with a chip discharge port according to claim 6, wherein, The inner wall of the chip accommodating groove (21) is an arc surface (211).

8. The grinding head with a chip discharge port according to claim 1, characterized in that, The surface of the grinding surface (22) is provided with a grinding fillet.

9. The grinding head with a chip discharge port according to claim 1, characterized in that, The chip discharging port (23) is a strip-shaped port, and the opening direction of the chip discharging port (23) is perpendicular to the central axis of the substrate (1).

10. The grinding head with a chip discharge port according to claim 1, wherein, The surface of the grinding part (2) is provided with a brazing layer, and the brazing layer has a uniform diamond layer.

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