Cutting and grinding integrated cutter

Abstract

The utility model belongs to the technical field of saw blades, and particularly relates to a cutting and grinding integrated cutter which is used for cutting a printed circuit board (PCB) and comprises a cutter head and saw blades, an assembling hole used for assembling a shaft is formed in the center of the cutter head, and a plurality of saw blades are evenly arranged on the periphery of the cutter head. The saw blades comprise the first saw blade and the second saw blade, and the first saw blade and the second saw blade are distributed in a staggered mode. The angle of the first saw blade is 35 degrees and used for cutting a PCB, and the angle of the second saw blade is 90 degrees and used for polishing the PCB. The cutter comprises a first saw blade and a second saw blade. The angle of the first saw blade is 35 degrees, the first saw blade is specially used for cutting the PCB, and high cutting efficiency and precision can be provided. And the angle of the second saw blade is 90 degrees, and the second saw blade is used for polishing the PCB, so that the smoothness of a cutting surface can be ensured, and the overall quality of the PCB is improved. And the driving end and the cutting end are distributed in a staggered mode, and the PCB is accurately and smoothly cut under high-speed driving of the driving end.

Description

Technical Field

[0001] The utility model belongs to the technical field of saw blades, and particularly relates to a cutting and grinding integrated knife. Background Art

[0002] The saw blades of sawing machines or sawing devices with saw teeth are made of hard alloy and are often used to cut materials such as PCB boards, steel and steel plates. However, after the PCB board is cut, burrs are generated at both ends of the PCB board cutting position, which can easily cause cuts to the user. When assembling parts, the burrs on both sides will cause slight protrusions and lead to deviations in accuracy. Therefore, an additional deburring process is required, which increases time costs and has low production efficiency. Utility Model Content

[0003] The utility model aims to provide a cutting and grinding integrated knife, aiming to solve the above problems.

[0004] To achieve the above purpose, the utility model provides a cutting and grinding integrated knife for cutting PCB boards, including a knife disc and a saw blade, wherein a mounting hole for mounting a shaft is provided in the center of the knife disc, and a plurality of saw blades evenly arranged are provided on the periphery of the knife disc. The saw blade includes a first saw blade and a second saw blade, and the first saw blade and the second saw blade are staggered. The angle of the first saw blade is 35°, and it is used for cutting PCB boards, and the angle of the second saw blade is 90°, and it is used for grinding PCB boards.

[0005] Furthermore, a plurality of protruding saw blade bases extend upward from the periphery of the cutter head, and the saw blade bases match the saw blade. The saw blade base is divided into a first base and a second base, one end of the first base is connected to the first saw blade, and one end of the second base is connected to the second saw blade.

[0006] Furthermore, a U-shaped groove is provided between the first base body and the second base body.

[0007] Furthermore, the U-shaped groove is chiseled inwardly to form a heat dissipation groove, and the heat dissipation groove is used to reduce overheating of the saw blade.

[0008] Furthermore, a plurality of mounting holes are evenly distributed around the assembly hole on the cutter disc.

[0009] Furthermore, the first saw blade is an upward acute triangle shape, which is sequentially set as point A, point B and point C from top to bottom, and the angle formed by line AB and line AC is 35°. The second saw blade is an upward pentagon shape, which is sequentially set as point V, point W, point X, point Y and point Z from top to bottom, and the angle formed by line VW and line VX is 90°.

[0010] Furthermore, 30 saw blades are staggeredly distributed on the cutter disc, 15 of which are first saw blades and 15 are second saw blades.

[0011] The above one or more technical solutions in the integrated cutting and grinding knife provided by the embodiment of the utility model have at least the following technical effects:

[0012] In this design, the tool includes a first saw blade and a second saw blade. The first saw blade has an angle of 35° and is specifically used for cutting PCB boards, which can provide high cutting efficiency and precision. The second saw blade has an angle of 90° and is used for polishing PCB boards, which can ensure a smooth cutting surface and improve the overall quality of the PCB boards. The two are staggered and arranged to accurately and smoothly cut the PCB boards under the high-speed drive of the driving end. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 A combination diagram of a cutting and grinding knife provided in an embodiment of the utility model.

[0015] Figure 2 This is a structural diagram of the integrated cutting and grinding knife provided in an embodiment of the utility model.

[0016] Figure 3 Part of the integrated cutting and grinding knife provided in the embodiment of the utility model Figure 1 .

[0017] Figure 4 Part of the integrated cutting and grinding knife provided in the embodiment of the utility model Figure 2 .

[0018] Figure 5 A linear diagram of the integrated cutting and grinding knife provided in an embodiment of the utility model.

[0019] Description of main reference numerals: 100, cutter head; 120, saw blade; 121, first saw blade; 122, second saw blade; 130, assembly hole; 140, saw blade base; 141, first base; 142, second base; 150, U-shaped groove; 160, heat dissipation groove; 170, mounting hole;

[0020] 200, point A; 201, point B; 202, point C; 203, point V; 204, point W; 205, point X; 206, point Y; 207, point Z. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention in detail. Figures 1 to 5, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 5 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] In the embodiment of the utility model, this case provides a cutting and grinding integrated knife for cutting PCB boards, including a knife disc 100 and a saw blade 120. The knife disc 100 is provided with an assembly hole 130 for assembling the shaft in the center, and a plurality of saw blades 120 are evenly arranged around the knife disc 100. The saw blade 120 includes a first saw blade 121 and a second saw blade 122, and the first saw blade 121 and the second saw blade 122 are staggered. The angle of the first saw blade 121 is 35°, which is used for cutting PCB boards, and the angle of the second saw blade 122 is 90°, which is used for grinding PCB boards.

[0026] Specifically, the tool includes a first saw blade 121 and a second saw blade 122. The first saw blade 121 has an angle of 35° and is specifically used for cutting PCB boards, which can provide high cutting efficiency and precision. The second saw blade 122 has an angle of 90° and is used for polishing PCB boards, which can ensure a smooth cutting surface and improve the overall quality of the PCB boards. The two are staggered and distributed with each other, and the PCB boards are accurately and smoothly cut under the high-speed drive of the driving end. The tools are preferably used in pairs, that is, they are respectively located at the upper and lower ends of the PCB board, and the PCB board is cut and polished in two opposite directions at the same time, and the upper and lower ends of the PCB board are cut respectively to complete two-way processing.

[0027] In another embodiment of the utility model, a plurality of protruding saw blade bases 140 extend upward from the periphery of the cutter disc 100, and the saw blade bases 140 match the saw blade 120. The saw blade base 140 is divided into a first base 141 and a second base 142, one end of the first base 141 is connected to the first saw blade 121, and one end of the second base 142 is connected to the second saw blade 122. Specifically, the first base 141 and the second base 142 are protruding ends extending from the cutter disc 100, which are used to connect the first saw blade 121 and the second saw blade 122, and the abutment makes it difficult for the saw blade base 140 to abut against the saw blade 120 when the cutter disc 100 moves at high speed, thereby increasing the stability during use. The saw blade base 140 is in a connection relationship with the saw blade 120, so the saw blade 120 can be separated from the saw blade base 140, and the position of the saw blade 120 in the saw blade base 140 can be moved to achieve a height difference, thereby coping with the thickness difference of different PCB boards.

[0028] In another embodiment of the utility model, a U-shaped groove 150 is disposed between the first base body 141 and the second base body 142 .

[0029] In another embodiment of the utility model, the U-shaped groove 150 is chiseled inward to form a heat dissipation groove 160. Due to the different manufacturing materials and the heat generated by high-speed friction, it is easy to cause the saw blade to overheat. The heat dissipation groove 160 in the middle of the saw blade 120 can play a cooling role. It can generate convection between the saw blade 120 and the air to dissipate heat, reduce the temperature of the saw blade, and thus extend the service life of the saw blade.

[0030] In another embodiment of the utility model, a plurality of mounting holes 170 are evenly distributed around the assembly hole on the cutter disc 100, and the mounting holes 170 are used to match with the driving end to enhance the connection stability.

[0031] In another embodiment of the utility model, the first saw blade 121 is in the shape of an upward acute triangle, which is set as point A 200, point B 201 and point C 202 from top to bottom, and the angle formed by line AB and line AC is 35°; the second saw blade 122 is in the shape of a pentagon, which is set as point V 203, point W 204, point X 205, point Y 206 and point Z 207 from top to bottom, and the angle formed between line VW and line VX is 90°. Specifically, the 35° formed by line AB and line AC is used to cut the PCB board, and the 90° formed between line VW and line VX is to grind off the burrs generated by the PCB board under high-speed rotation. The integrated cutting molds of the two are respectively located at the upper and lower ends of the PCB board, and cooperate with each other to ensure that the PCB board is accurately and smoothly cut under the high-speed drive of the driving end.

[0032] In another embodiment of the utility model, 30 saw blades are staggeredly distributed on the cutter disc 100, of which 15 are first saw blades 121 and 15 are second saw blades 122. Multiple first saw blades 121 and second saw blades 122 are provided to ensure smooth and precise processing.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting and grinding integrated knife for cutting PCB boards, characterized in that: It includes a cutter disc and a saw blade, wherein an assembly hole for assembling a shaft is provided in the center of the cutter disc, and a plurality of saw blades evenly arranged are provided on the periphery of the cutter disc; the saw blade includes a first saw blade and a second saw blade, and the first saw blade and the second saw blade are staggered; the angle of the first saw blade is 35°, and is used for cutting PCB boards; the angle of the second saw blade is 90°, and is used for grinding PCB boards.

2. The cutting and grinding integrated knife according to claim 1, characterized in that: A plurality of protruding saw blade bases extend upward from the periphery of the cutter disc, and the saw blade bases match the saw blade; the saw blade bases are divided into a first base and a second base, one end of the first base is connected to the first saw blade, and one end of the second base is connected to the second saw blade.

3. The cutting and grinding integrated knife according to claim 2, characterized in that: A U-shaped groove is provided between the first base body and the second base body.

4. The cutting and grinding integrated knife according to claim 3, characterized in that: The U-shaped groove is chiseled inwardly to form a heat dissipation groove, and the heat dissipation groove is used to reduce overheating of the saw blade.

5. The cutting and grinding integrated knife according to claim 2, characterized in that: The cutter disc is provided with a plurality of mounting holes evenly distributed around the assembly hole.

6. The cutting and grinding integrated knife according to any one of claims 1 to 5, characterized in that: The first saw blade is in the shape of an upward acute triangle, which are point A, point B and point C from top to bottom, and the angle formed by the AB line and the AC line is 35°; the second saw blade is in the shape of an upward pentagon, which are point V, point W, point X, point Y and point Z from top to bottom, and the angle formed between the VW line and the VX line is 90°.

7. The cutting and grinding integrated knife according to any one of claims 1 to 5, characterized in that: There are 30 saw blades staggeredly distributed on the cutter disc, 15 of which are the first saw blades; and 15 of which are the second saw blades.

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