What are the components of a PCB drill bit and what are they called?

Two parts, one of the drill cutter, the other is to hold the drill handle of the drill cutter, the main difference is the type of knife, there are gong knives, groove knives, etc., you can search for my **, here is not convenient to link, please search for the century core copy board company, or dragon copy board company, I hope to help you.

It is composed of three parts: drill shank, drill body and drill tip.

Care and maintenance of drill bits.

After the drill bit is used, it should be immediately checked for damage, and if there are undesirable conditions such as passivation, it should be ground and trimmed immediately;

When storing, the drill bit should be seated, so that when it is used later, it is convenient and time-saving, and saves the time of looking for the drill bit again.

When drilling through holes, when the drill bit is about to drill through, the torque is the largest, so it is necessary to slowly feed the tool with light pressure at this time to avoid the drill bit from torsion due to excessive force;

Before drilling, the center point must be punched, the purpose of which is to accommodate the static, point to avoid the static point of the drill bit touching the bottom, and to guide the drill bit in the correct drilling position;

When drilling, you should make full use of the cutting neat and pay attention to chip removal;

When drilling cross holes, large diameter holes should be drilled first, and then small hole diameters should be drilled;

When the drill bit is drilling, the phenomenon of breaking or stopping suddenly may be due to too fast feeding, grinding or rapid cold and heat during drilling;

Drilling cracks the center of the drill bit, which may be caused by the angle of the drill lip gap is too small, the feed is too fast, the drill bit is passivated, the pressure is too great, the cooling is lacking, and the drill bit or workpiece clamping is poor;

When drilling, the drill bit is broken, which may be caused by the angle of the drill lip gap is too small or the drilling speed is too high, the feed is large or the drill bit has been passivated and continues to be pressurized and cut;

The cutting edge is cracked during drilling, which may be caused by hard spot sand hole in the workpiece material or too fast feeding, improper selection of drilling speed, and no cutting agent during drilling;

The drill lip and cut edge are broken, which may be due to the fact that the cutter is too fast or the angle of the lip gap is too small.

The diameter of the hole drilled by drilling is too large, which may be caused by the fact that the two cutting edges are not good, the equal length or the top half angle of the two drills is not equal, and the static point deviation is not equal, and the concentricity of the main shaft is poor;

Only one chip is discharged during drilling, which may be the reason for the unequal length of the two cut edges or the unequal half angle of the drill top;

The squeaking sound made during drilling may be caused by the hole is not straight or the drill bit is passivated;

Abnormal changes in chip properties during drilling may be caused by blunt or broken edges.

Introduction to PCB Drill Bits:

PCB (printedcircuitboard), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, is the support of electronic components, is the provider of electrical connection of electronic components. Since it is made using electronic printing, it is called a "printed" circuit board.

PCB Drill Bit Types:

The drill bit type of PCB drill bit control drilling machine: the drill bits for printed board drilling include straight handle twist drill bits, fixed handle twist drill bits and fixed handle shovel (undercut) drill bits. Straight shank twist drill bits are mostly used in single-head drilling machines, drilling simpler printed boards or single-sided panels, and now it is rare to see in large circuit board production plants, and its drilling depth can reach 10 times the diameter of the drill bit.

In the case of low substrate stacks, drill misalignment can be avoided by using a drill sleeve. At present, most manufacturers use CNC drilling machines, which use cemented carbide drill bits, which are characterized by automatic replacement of drill bits. High positioning accuracy, no need to use a drill bushing.

Large helix angle, fast chip removal speed, suitable for high-speed cutting. In the full length of the flute, the diameter of the drill bit is an inverted cone, and the friction with the hole wall is small during drilling, and the drilling quality is high. Common drill shank diameters are and.

PCB Drill Bit Usage:

PCB drill bits are mainly used in PCB manufacturing: (PCB, Printed Circuit Board) printed circuit board, which is bonded together by several layers of resin material, and uses copper foil wiring inside. There are layers.

Drilling accounts for 30 to 40% of the cost of printed circuit boards, and mass production often requires specialized equipment and drill bits. Good PCB drill bits are made of high-quality cemented carbide materials, which have excellent characteristics such as high rigidity, high hole position accuracy, good hole wall quality, and long life.

The PCB drill bit is a drill bit with a PCB composite piece for cutting working teeth, and the working layer is cubic boron nitride, which generally belongs to the category of precision instruments, and the drill body is generally tungsten steel, and the PCB composite piece is welded on it.

It is a needle, or tool, used to drill holes. The material is made of aluminum and tungsten steel.

Summary: What is a PCB drill bit? This article explains the common nouns and terms of PCB drill bits and provides an overview of type I, type drill bits and tremor elements. The following content is organized by the understanding network and provided for your reference. What is a pcb drill bit is a common noun term for pcb drill bits.

PCB drill bit Chinese name for printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic components, is the support of electronic components, is the provider of electrical connection of electronic components. Since it is made using electronic printing, it is called a "printed" circuit board.

PCB drill bits are commonly used noun terms.

The backtaper is a constant reduction of the drill bit diameter along the length of the drill shaft (see E in the diagram).

Bodylandclearance is a reduction in the diameter of the belt that creates a gap behind the belt. The size of this depth is determined by the manufacturing plant (see k in Figure 1).

The carryout is the back section of the flute, which is generated by the grinding wheel passing over (see Fig. and Fig. 1 f).

A chamferangle is an angle at the end of a 1 8 inch diameter drill shank that helps to load and unload the drill bit and reduces wear on the drill clamp and bushing (see Figure 4 and Figure 1).

Type I Drill Bit Elements.

a-drill cutter diameter; b-Drill body length; c-drill shank diameter; d-total length of drill cutter; e-inverted cone; g-drill thickness; h-taper of the cone; i1 - belt width; i2-flute belt angle; j-edge width; k-Blade belt clearance; l-Guiding angle; m-shoulder angle; n-transverse edged angle; o-Flange height; a-helix angle; p a vertex angle; y - first trailing angle; &-2nd rear corner.

Chippedpoint is when the maximum chipping point on the cutting edge of the drill head exceeds the maximum allowable value specified for the worship of the Shed.

The chiseledgeangle is the angle between the main cutting edge and the first and second main rear intersections, measured on a plane perpendicular to the drill shaft.

The drillbodylength refers to the actual total length of the drill bit.

type drill bit elements.

a-drill cutter diameter; b-drill body length; c-drill shank diameter; d-drill cutter total length; f-a row of chip mouths; g-drill core thickness; i1 - belt width; i2-flute belt angle; j-edge width; k-Blade belt clearance; l-Guiding angle; n-transverse edged angle; o-Flange height; r-inner fillet radius; d-helix angle; p-apex; y - first trailing angle; &-2nd rear corner.

The type drill bit is measured from the drill tip to the intersection of the drill bit diameter and the shoulder. The length of the drill body of the drill bit is the length of the entire drill bit diameter part including the drill bit (see Figure 4-3 and Figure 4-4 b).

The drill bit diameter (DNLLDIAMETER) refers to the actual size of the drill body. >> the characteristics and uses of various types of drill bits.

The PCB drill bit is a tool for drilling holes in the circuit board, which is generally a small diameter drill bit.

The setting of drilling parameters is crucial, the drilling speed is too fast, the drill bit is too stressed and breaks, and the drilling speed is too slow will reduce the production efficiency. Due to the different plate thickness, copper thickness, and sheet structure of PCB boards produced by each sheet manufacturer.

Therefore, the PCB needs to be set according to the specific situation. Calculations and tests are carried out to select the most suitable drilling parameters. Generally, such as the drill bit, the cutting speed should be, and the drilling depth should be controlled between.

1.A drill bit is a hard tool consisting of about 94% tungsten carbide, about 6% cobalt and some organic binders.2It has high wear resistance and hardness. The finer the alloy particles, the higher the hardness and the better it is for drilling small holes. Usually the alloy particles are less than 1 micron

3.The purpose of this alloy tool in the PCB is to drill holes, usually you see that there are holes of different sizes on the circuit board, in fact, it is made by using this tool on a special machine, of course, each diameter of the hole will have a corresponding drill pin, not all holes of different sizes are drilled with a drill needle of one specification.

4.At present, the industry is generally used to the diameter, of course, smaller can sit on, (smaller than a hair), if the larger hole, then use reaming, such as the hole to be drilled, it is possible to use a drill needle, drill a few more holes along the circle, then become.

The drill bit is somewhat similar to the drill bit used to hit walls at home, but the workmanship and recommended standards of the knives used on the PCB are thinner and more difficult to make than the ones used to hit walls at home. The principle is pretty much the same.

Above, I hope it will be helpful to you.

PCB is a circuit board, the circuit board needs to be drilled to insert components or other functions, PCB drill bit is the tool for drilling, generally small diameter drill bit.

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Drill bit: It is a tool that drills a hole in the place where the two-layer line or multi-layer line needs to be conducted.

PCB back drilling is a machining method that includes the following steps:

1: Provide a PCB with a positioning hole, and use the positioning hole to carry out a drill positioning and a drill hole for the PCB;

2: Plating the PCB after a drill hole, and dry film sealing treatment on the positioning hole before electroplating;

3: Make the outer layer pattern on the plated PCB;

4: Carry out pattern plating on the PCB after forming the outer layer pattern, and carry out dry film sealing treatment on the positioning hole before pattern plating;

5: use the positioning hole used to carry out back drilling positioning, and use the drill cutter to carry out back drilling on the electroplating hole that needs to be back drilled;

6: Wash the back drill hole after back drilling.

The back drill uses the same positioning hole as the first drill, and the positioning hole is sealed with dry film, so as to avoid the influence of the size change of the positioning hole due to the plating or graphic plating of the positioning hole on the positioning accuracy during back drilling, and improve the alignment ability of the back drill.