CN215318980U

CN215318980U - Cutter for manufacturing U-shaped side wall of PCB

Info

Publication number: CN215318980U
Application number: CN202121685923.7U
Authority: CN
Inventors: 黄先广; 周飞; 钟岳松
Original assignee: Multilayer Pcb Technology Co ltd
Current assignee: Multilayer Pcb Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-28
Anticipated expiration: 2031-07-23

Abstract

The utility model belongs to the technical field of PCB preparation, and discloses a cutter for manufacturing a U-shaped side wall of a PCB plate, which comprises a cutter handle, a reducing transition area, a connecting area and a cutter head which are sequentially connected, wherein the cutter head comprises a cutter bar and 3 blades, the cutter bar is connected with the connecting area, the blades are uniformly distributed along the circumferential direction of the cutter bar, an angle of 15 degrees is formed between the blades and the axis of the connecting area, each blade comprises a bottom edge connected with the cutter bar, a top edge arranged opposite to the bottom edge and a right side edge connecting the top edge with the bottom edge and far away from the connecting area, a first cutting edge used for drilling downwards is arranged on the right side edge of each blade, a second cutting edge used for producing a U-shaped groove is arranged on the top edge, the second cutting edge is in an isosceles trapezoid shape, and the upper bottom and two waists of the second cutting edge are both provided with cutting edges. The utility model has the beneficial effects that: through the cooperation of the cutter and traditional PCB milling equipment, a PCB with a U-shaped groove on the side wall can be processed.

Description

Cutter for manufacturing U-shaped side wall of PCB

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of PCB preparation, in particular to a cutter for manufacturing a U-shaped side wall of a PCB.

[ background of the utility model ]

Pcb (printed Circuit board), which is called printed Circuit board in chinese, is an important electronic component, is a support for electronic components, and is a carrier for electrical connection of electronic components. Because it is fabricated using electronic printing, it is known as a "printed" circuit board, which is one of the important components of the electronics industry. In the existing PCB mounting technology, a bonding pad is generally designed on the surface of a PCB for soldering and mounting electronic components. However, some special PCB boards may be designed with special "U" grooves on the side walls of the board edges for soldering special devices. The PCB with the special U-shaped groove is manufactured, under the condition that equipment is not changed, when the traditional processing equipment is adopted for manufacturing, the U-shaped groove can be processed by using a special U-shaped milling cutter, but the U-shaped groove cannot be processed by using the existing milling cutter. Therefore, there is a need for a tool for making U-shaped side walls of PCB panels for producing PCB panels with U-shaped channels in the side walls.

[ Utility model ] content

The utility model discloses a cutter for manufacturing a U-shaped side wall of a PCB (printed circuit board), which can effectively solve the technical problems related to the background technology.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a cutter for preparation of PCB plate U-shaped lateral wall, includes handle of a knife, reducing transition zone, joining region and the tool bit that connects gradually, the tool bit includes cutter arbor and a plurality of blade, the cutter arbor with the joining region is connected, the blade is followed cutter arbor circumferencial direction evenly distributed, the blade with joining region axis is 15 contained angles, the blade include with the base that the cutter arbor is connected, with the relative topside that sets up in base and connection the topside with the base is kept away from the right side limit of joining region, the right side limit of blade is equipped with the first cutting edge that is used for down-drilling, the topside is equipped with the second cutting edge that is used for producing the U-shaped recess, second cutting edge shape is isosceles trapezoid, the last end and two waists of second cutting edge all have the sword.

As a preferred improvement of the present invention: the total length of the cutter is 38.1mm, the length of the cutter handle is 30mm, and the length of the reducing transition area is 3 mm.

As a preferred improvement of the present invention: the handle diameter is 3.175mm, the connecting region diameter is 1.2 mm.

As a preferred improvement of the present invention: the diameter of the cutter head is 4 mm.

As a preferred improvement of the present invention: and an angle of 45 degrees is formed between the oblique side and the bottom side of the isosceles trapezoid of the second cutting edge.

As a preferred improvement of the present invention: the blade is arc-shaped and fan-shaped.

As a preferred improvement of the present invention: the handle of a knife with the joining region is the cylinder shape, the reducing transition district with the cutter arbor is round platform shape, and four share the axis and set up.

As a preferred improvement of the present invention: the number of the blades is 3.

As a preferred improvement of the present invention: the lengths of the first cutting edges of the three blades are different.

As a preferred improvement of the present invention: the length of the first cutting edge of the two blades is smaller than the distance from the top of the first cutting edge to the axis of the cutter bar, and the length of the first cutting edge of the rest blade is larger than the distance from the top of the first cutting edge to the axis of the cutter bar.

The utility model has the following beneficial effects:

the traditional PCB milling machine equipment and the traditional PCB milling cutter cannot be used for processing PCB plates with U-shaped grooves on the side walls, and the traditional PCB milling cutter can only process patterns on the surface of a PCB and cannot process the side walls. The utility model provides a special cutter which can be used for processing a PCB with a U-shaped groove on the side wall by utilizing traditional PCB milling equipment.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic view of a cutting tool for manufacturing a U-shaped side wall of a PCB according to the present invention;

FIG. 2 is a schematic view of a tool tip configuration according to the present invention;

FIG. 3 is a top view of a cutting head region of the present invention;

FIG. 4 is a schematic view of a blade of the present invention;

FIG. 5 is a schematic diagram of a PCB structure according to the present invention.

In the figure: 1-handle of a knife, 2-reducing transition region, 3-connecting region, 4-tool bit, 41-cutter arbor, 42-blade, 421-first cutting edge, 422-second cutting edge.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a cutting tool for manufacturing a U-shaped sidewall of a PCB, including a tool shank 1, a reducing transition area 2, a connection area 3 and a tool bit 4 connected in sequence, the cutting head 4 comprises a cutter bar 41 and a plurality of blades 42, the cutter bar 41 is connected with the connecting area 3, the blades 42 are uniformly distributed along the circumferential direction of the cutter bar 41, an included angle of 15 degrees is formed between the blades 42 and the central axis of the connecting area 3, the blade 42 comprises a bottom edge connected to the knife bar 41, a top edge arranged opposite to the bottom edge and a right side edge connecting the top edge to the bottom edge and remote from the connecting zone 3, the right side edge of the blade 42 is provided with a first cutting edge 421 for drilling down, the top edge is provided with a second cutting edge 422 for producing a U-shaped recess, the shape of the second blade 422 is isosceles trapezoid, and the upper bottom and the two waists of the second blade 422 both have blades. Specifically, there are 3 cutter head 4 department blade 42, blade 42 with be 15 jiaos between the 3 axes of joining region, the convenient chip removal.

In this embodiment, the total length of the tool is 38.1mm, the length of the tool shank 1 is 30mm, and the length of the reducing transition region 2 is 3 mm. The diameter of the knife handle 1 is 3.175mm, the diameter of the connecting area 3 is 1.2mm, and the diameter of the knife head 4 is 4 mm. The angle between the oblique side and the bottom side of the isosceles trapezoid of the second blade 422 is 45 degrees. The tool holder 1 and the connecting area 3 are cylindrical, the reducing transition area 2 and the tool bar 41 are circular truncated cones, and the four areas share a central axis.

Referring to fig. 4, the blades 42 are arc-shaped fan blades, the lengths of the first cutting edges 421 of three blades 42 are different, the length of the first cutting edge 421 of two blades 42 is smaller than the distance from the top of the first cutting edge 421 to the axial line of the tool bar 41, and the length of the first cutting edge 421 of the remaining blade 42 is larger than the distance from the top of the first cutting edge 421 to the axial line of the tool bar 41.

Referring to fig. 5, the PCB with U-shaped side walls is illustrated, and the processing of the PCB includes the following steps: 1) processing the PCB by using a routing machine and a traditional routing knife to route a cuboid-shaped groove; 2) the cutter is replaced, and a semicircular groove is downwards routed through the first cutter edge 421; 3) moving the cutter upwards to make the second blade 422 align with the U-shaped groove; 4) and the cutter moves horizontally, and a U-shaped groove is formed by routing the second cutting edge 422. And during machining, the rotating speed of the cutter is 15000-20000 r/min, and the horizontal moving speed of the cutter is 0.5 m/min.

The working principle is as follows: the cutter is mounted on the existing gong machine, the hole is turned down on the PCB board by the first blade 421, and then the U-shaped groove is produced by the second blade 422.

While embodiments of the utility model have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The utility model provides a cutter that is used for PCB plate U-shaped lateral wall to make which characterized in that: the cutter comprises a cutter handle (1), a reducing transition area (2), a connecting area (3) and a cutter head (4) which are sequentially connected, wherein the cutter head (4) comprises a cutter bar (41) and a plurality of blades (42), the cutter bar (41) is connected with the connecting area (3), the blades (42) are uniformly distributed along the circumferential direction of the cutter bar (41), the blades (42) and the central axis of the connecting area (3) form an included angle of 15 degrees, each blade (42) comprises a bottom edge connected with the cutter bar (41), a top edge arranged opposite to the bottom edge and a right side edge connected with the top edge and the bottom edge and far away from the connecting area (3), a first cutting edge (421) used for drilling downwards is arranged on the right side edge of each blade (42), a second cutting edge (422) used for producing a U-shaped groove is arranged on the top edge, and the second cutting edge (422) is in an isosceles trapezoid shape, the upper bottom and the two waists of the second blade (422) are both provided with blades.

2. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the total length of the cutter is 38.1mm, the length of the cutter handle (1) is 30mm, and the length of the reducing transition area (2) is 3 mm.

3. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the diameter of the knife handle (1) is 3.175mm, and the diameter of the connecting area (3) is 1.2 mm.

4. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the diameter of the tool bit (4) is 4 mm.

5. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the angle between the inclined edge and the upper bottom edge of the isosceles trapezoid of the second cutting edge (422) is 45 degrees.

6. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the blade (42) is arc-shaped fan blade-shaped.

7. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the tool holder (1) and the connecting area (3) are cylindrical, the reducing transition area (2) and the tool bar (41) are in a circular truncated cone shape, and the four areas share a central axis.

8. The tool for manufacturing the U-shaped side wall of the PCB plate as claimed in claim 1, wherein: the number of the blades (42) is 3.

9. The tool for making the U-shaped side wall of the PCB panel as recited in claim 8, wherein: the lengths of the first cutting edges (421) of the three blades (42) are different.

10. The tool for making the U-shaped side wall of the PCB panel as claimed in claim 9, wherein: the lengths of the first cutting edges (421) of the two blades (42) are smaller than the distance from the top of the first cutting edge (421) to the axis of the cutter bar (41), and the length of the first cutting edge (421) of the rest blade (42) is larger than the distance from the top of the first cutting edge (421) to the axis of the cutter bar (41).