Drilling tool for processing PCB (Printed Circuit Board)

Abstract

The utility model provides a drilling tool for processing a PCB (Printed Circuit Board). The drilling tool comprises a drilling edge, a drilling handle and a tool bit, the tool bit is arranged at one end of the drill handle; the drill edge is spirally arranged on the surface of the tool bit; the tool bit is provided with a chip groove; the diameter of the tool bit gradually increases from the end away from the drill handle to the end close to the tool handle. The problem that a PCB is broken during drilling is effectively solved, and holes are machined slowly along with feeding of a tool by setting the gradually-changed diameter of the tool bit.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation technical field, especially a kind of PCB board processing drill. BACKGROUND

[0002] PCB (Printed Circuit Board, namely printed circuit board) is important electronic component, is the support body of electronic component, is the carrier of electronic component electrical connection.In the practical application of circuit board PCB, need to be connected with other electronic components and use by ultra-high speed ultra-precision drilling processing.

[0003] The existing drilling technology directly drills holes in the preset position of PCB by drill bit.

[0004] And drill bit and PCB hard contact processing, when the hole processed is too big, the drill bit processing of once processing can cause the fracture of PCB, cause the abandonment of entire PCB. UTILITY MODEL CONTENT

[0005] In view of above problem, the utility model is provided to overcome the above problem or at least partially solve the above problem with a kind of PCB board processing drill.

[0006] In order to solve the above problems, the utility model discloses a kind of PCB board processing drill, including: drill blade, drill handle and tool bit;The tool bit is arranged at the one end of the drill handle;The drill blade is helically arranged on the surface of the tool bit;The tool bit is provided with chip removal groove;The diameter of the tool bit gradually increases from the one end away from the drill handle to the one end close to the drill handle.

[0007] Further, the end of the tool bit in contact with the drill handle is provided with transverse blade.

[0008] Further, the transverse blade is also provided with chamfered blade.

[0009] Further, the spiral angle of the chip removal groove is 20 degrees to 35 degrees.

[0010] Further, the thickness of the drill blade is 2mm.

[0011] The utility model includes the following advantages:

[0012] By setting the diameter of the tool bit gradually increases, when drilling, with the feeding of tool, the hole drilled also slowly increases, produces smaller damage, so that the quality of the PCB processed is stable, not easy to break. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of one embodiment of the utility model a kind of PCB board processing drill;

[0014] Figure 2 is a top view of one embodiment of the PCB processing drill bit of the utility model.

[0015] In the figure: 1, drill edge; 2, drill handle; 3, tool bit; 4, transverse cutting edge; 5, chamfer edge. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further explained in detail below by combining with the drawings and specific embodiments.

[0017] Embodiment 1

[0018] Referring to Figure 1 , a structure schematic view of the PCB processing drill bit of the utility model is shown, and specifically can include: drill edge 1, drill handle 2 and tool bit 3;The tool bit 3 is arranged at one end of the drill handle 2;The drill edge 1 is spirally arranged on the surface of the tool bit 3.It needs to be explained that when processing, high-quality PCB materials are selected, and pretreatment is carried out according to design requirements, such as cleaning, drying, etc., to ensure that the material surface is clean and flat, and the material to be processed is placed in the processing position, and the tool bit 3 is used to process the PCB, and tungsten carbide, diamond, high-speed steel and ceramic are used.When selecting the material of the PCB processing tool bit, the hardness of the PCB material, the processing speed, the accuracy requirement and the cost budget need to be considered.For example, for the PCB material of hard material or the occasion needing high-precision processing, the tool bit of tungsten carbide or diamond material is a better choice.For general PCB processing, high-speed steel or coated tool bit can be enough.In addition, the geometric shape and edge design of the tool bit will also affect the processing effect and tool life.

[0019] Further, the tool bit 3 is provided with a chip removal groove;The diameter of the tool bit 3 gradually increases from the end far away from the drill handle 2 to the end close to the drill handle 2.The tool bit 3 is gradually increased in diameter from the end far away from the drill handle to the end close to the drill handle, so that the PCB can be processed to start processing from a small hole, and as the PCB processing drill bit continuously feeds, the diameter of the drilled hole gradually increases, and the drilling on the PCB is slowly and steadily carried out, which is not easy to damage the PCB, and the excess material after cutting is discharged from the chip removal groove.

[0020] Embodiment 2

[0021] Referring to Figure 1, shows a structure schematic view of the PCB processing drill bit of the utility model, can specifically include: drill edge 1, drill handle 2 and tool bit 3;The tool bit 3 is arranged at one end of the drill handle 2;The drill edge 1 is helically arranged on the surface of the tool bit 3.It needs to be explained that when processing, high-quality PCB plate material is selected, and pretreatment is carried out according to design requirements, such as cleaning, drying, etc., to ensure that the material surface is clean and flat, and the plate material to be processed is placed in the processing position, and the tool bit 3 is used to process the PCB, and tungsten carbide, diamond, high-speed steel and ceramic are used, when selecting the material of the PCB processing tool bit, the hardness of the PCB material, the processing speed, the accuracy requirement and the cost budget need to be considered.For example, for the PCB plate material of hard material or the occasion needing high-precision processing, the tool bit of tungsten carbide or diamond material is a better choice, and for general PCB processing, high-speed steel or coated tool bit can be enough.In addition, the geometric shape and edge design of the tool bit will also affect the processing effect and tool life.

[0022] Further, the tool bit 3 is provided with a chip removal groove;The diameter of the tool bit 3 gradually increases from the end far away from the drill handle 2 to the end close to the drill handle 2.The tool bit 3 is gradually increased in diameter from the end far away from the drill handle to the end close to the drill handle, so that the PCB can be processed to start processing from a small hole, and as the PCB processing drill bit continuously feeds, the diameter of the drilled hole gradually increases, the drilling on the PCB is slowly and steadily carried out, and the PCB is not easy to be damaged, and the excess material after cutting is discharged from the chip removal groove.

[0023] Further, the end of the tool bit 3 in contact with the drill handle 2 is provided with a transverse blade 4.It needs to be explained that by setting the transverse blade 4, the burrs in the hole of the PCB are further scraped off, so that the hole is smooth.

[0024] Further, the transverse blade 4 is also provided with a chamfer blade 5.It needs to be explained that the chamfer blade 5 is provided with a margin on one side, which avoids the contact between the end of the high-speed rotating tool bit 3 close to the drill handle 2 and the formed hole, causing tool damage, and can further remove the burrs in the formed hole.

[0025] Further, in combination with Figure 2The spiral angle of the chip flute is 20-35 degrees. By setting the spiral angle of the chip flute to 20-35 degrees, the chip flute at this angle can discharge the excess material cut during machining, avoiding affecting the feeding of the tool and subsequent machining. Further, the shape of the tool bit 3 is a cone, including but not limited to, it can also be a circular truncated cone, the inclination angle of the side thereof to the horizontal line is 30 degrees, and the diameter of the end of the tool bit 3 close to the drill shank 2 is not more than the diameter of the hole to be machined, at this time, the diameter of the tool bit 3 should be the diameter after the drill blade 1. Further, the thickness of the drill blade 1 is 2 mm. Too small or too thick drill blade 2 will result in machining failure, and the thickness of 2 mm of the drill blade is the most suitable.

[0026] Finally, it should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0027] The above describes in detail the PCB processing drill bit provided by the present application, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A PCB processing drill bit, characterized by, Comprising: a drill bit, a drill shank and a drill head; the drill head is disposed at one end of the drill shank; the drill bit is helically disposed on the surface of the drill head; the drill head is provided with a chip flute; the diameter of the drill head gradually increases from the end away from the drill shank to the end close to the drill shank.

2. The PCB processing drill bit of claim 1, wherein, the end of the drill head in contact with the drill shank is provided with a transverse cutting edge.

3. The PCB processing drill bit of claim 2, wherein, the transverse cutting edge is further provided with a chamfered edge.

4. The PCB processing drill bit of claim 1, wherein, the helix angle of the chip flute is 20 to 35 degrees.

5. The PCB board processing drill bit of claim 1, wherein, the thickness of the drill bit is 2mm.

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