TWM653867U - Improved milling cutter structure - Google Patents

Abstract

This invention is an improved milling cutter structure, which includes a milling cutter, and the milling cutter is provided with a shank, and a spiral blade portion extends staggered on one side of the shank, and a plurality of spiral grooves are provided between the spiral blade portions, and a three-blade cutting head is provided at one end of the spiral blade portion, and a first cutting edge, a second cutting edge and a third cutting edge are provided in the three-blade cutting head at equal distances, and at least one cutting groove is provided on each of the first cutting edge, the second cutting edge and the third cutting edge, so that the milling cutter can assist in chip removal during the rotation and cutting process through the cutting groove, thereby improving the chip removal efficiency and achieving the purpose of assisting cutting.

Description

Improved structure of milling cutter

This invention is about an improved structure of a milling cutter, in particular, a structure in which the three-edged cutting head of the milling cutter is provided with an equidistant first cutting edge, a second cutting edge and a third cutting edge, each with at least one cutting groove, so that the milling cutter can assist in chip removal during the rotation and cutting process, thereby improving the chip removal efficiency and achieving the purpose of assisting cutting.

With the rapid development of the technology industry, many of the appliances and products used in our daily lives are technologically and electronically based. People’s lives are always filled with technological products, such as computers, mobile phones, televisions and other electronic products. Most of these electronic products have printed circuit boards (PCBs). board) to control the operation of these electronic products, and the most common printed circuit boards are flexible circuit boards, mobile phone boards, ball grid array boards (BGA), DDR2 circuit boards, BOC (WBGA) package substrates, traditional printed circuit boards, etc.; and various circuit boards are set up to match various memories, and because the number and quantity of pins of various memories are different, and the size of the memory is small and the number of pins is large, the pin spacing of the memory is also different.

In order to match the design of various circuit boards, the smoothness of the milling cutter in the milling of circuit boards is extremely important. However, in order to match the cutting of various circuit boards, the efficiency of the milling cutter in the cutting process is not stable enough, and excessive cutting is easy to cause damage to the milling cutter or cause uneven milling of the circuit board. This is the key point that those engaged in this industry are eager to study and improve.

Therefore, in view of the above problems and deficiencies, the creator collected relevant information, evaluated and considered various aspects, and used the years of experience accumulated in this industry, and after continuous trials and modifications, he designed this new patent with improved milling cutter structure.

The main purpose of this invention is to improve the structure of the milling cutter, which includes a milling cutter, and the milling cutter is provided with a shank, and a spiral blade portion extends staggered on one side of the shank, and a plurality of spiral grooves are provided between the spiral blade portions, and a three-blade cutting head is provided at one end of the spiral blade portion, and a first cutting edge, a second cutting edge and a third cutting edge are provided in the three-blade cutting head at equal distances, and at least one cutting groove is provided on each of the first cutting edge, the second cutting edge and the third cutting edge, so that the milling cutter can assist in chip removal during the rotation and cutting process through the cutting groove, thereby improving the chip removal efficiency and achieving the purpose of assisting cutting.

The secondary purpose of this invention is to provide multiple auxiliary cutting grooves on both sides of the cutting groove on the three-edge cutting head, and to use the multiple auxiliary cutting grooves to remove the shavings and debris that the multiple cutting edges cannot remove in time during the cutting process, so as to further improve the efficiency of chip removal.

Another purpose of this invention is that the width of the cutting groove in the three-edged cutting head is 10%~20% of the outer diameter of the shank on the shank, and the depth of the cutting groove is 1%~5% of the outer diameter of the shank, and the length of the cutting groove is 0.1mm~1mm, which is the optimal size of the cutting groove for cutting and discharging shavings and debris.

1: Milling cutter

11: Handle

12: Spiral blade

120: Spiral groove

13: Three-edged cutting head

130: Cutting groove

1301: Auxiliary cutting groove

131: First cutting edge

132: Second cutting edge

133: Third cutting edge

D: Outer diameter of handle

W1: cutting groove width

D1: Cutting groove depth

L1: cutting groove length

[Figure 1] is a three-dimensional appearance diagram of the improved structure of the milling cutter in this creation.

[Figure 2] is a view before the improved structure of the milling cutter in this creation.

Please refer to Figures 1 and 2, which are the three-dimensional appearance and front view of the milling cutter improvement structure of the present invention. The milling cutter improvement structure of the present invention is provided with a milling cutter 1, and the milling cutter 1 can be a general type of milling cutter or a micro milling cutter. The milling cutter 1 is provided with a handle 11, and a spiral blade 12 extending from one side of the handle 11 is provided with a plurality of spiral grooves 120, and the spiral blade 12 is provided with a plurality of spiral grooves 120. A three-edged cutting head 13 is provided at one end of the portion 12, and a first cutting edge 131, a second cutting edge 132 and a third cutting edge 133 are provided on the three-edged cutting head 13, and at least one cutting groove 130 is provided on each of the first cutting edge 131, the second cutting edge 132 and the third cutting edge 133, and a plurality of auxiliary cutting grooves 1301 are provided on both sides of the cutting groove 130.

Please refer to Figures 1 and 2 again. The handle 11 may have a handle outer diameter D, and the width W1 of each cutting groove 130 in the three-edged cutting head 13 is 10% to 20% of the handle outer diameter D, and the depth D1 of each cutting groove 130 in the three-edged cutting head 13 is 1% to 5% of the handle outer diameter D, and the length L1 of each cutting groove 130 in the three-edged cutting head 13 is 0.1mm to 1mm, specifically 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc., which is the optimal size of the cutting groove 130 for cutting and discharging shavings and debris.

When the milling cutter improved structure of the invention is used in actual application, the milling cutter 1 is set on a preset machine (not shown in the figure) for clamping, and the milling cutter 1 is used to perform high-speed cutting on the preset circuit board (not shown in the figure) fixed on the preset machine, and the three-edged cutting head 13 arranged at one end of the spiral blade portion 12 will perform a rapid cutting operation on the preset circuit board through the first cutting edge 131, the second cutting edge 132 and the third cutting edge 133 inside, and the cutting grooves 130 arranged on the first cutting edge 131, the second cutting edge 132 and the third cutting edge 133 will cut off excess shavings and debris during the cutting process, thereby reducing the volume of the shavings and debris so as to facilitate the cutting of the multiple spiral blades. The rotary groove 120 is discharged, and the multiple auxiliary cutting grooves 1301 provided on both sides of the cutting groove 130 will assist the cutting groove 130 in cutting and reducing the peripheral shavings and debris, so as to achieve the effect of improving the chip removal efficiency, and make the three-edged cutting head 13 easier to perform cutting operations and reduce the hardness of the preset circuit board during the processing of the preset circuit board, and the first cutting edge 131, the second cutting edge 132 and the third cutting edge 133 can evenly disperse the resistance in cutting to avoid the first cutting edge 131, the second cutting edge 132 and the third cutting edge 133 from breaking during the cutting process, thereby extending the life of the milling cutter 1, and achieving the purpose of auxiliary cutting, chip removal and extended life.

The above is only the best implementation example of this creation, and it does not limit the patent scope of this creation. Therefore, all simple modifications and equivalent structural changes made by using the instructions and diagrams of this creation should be included in the patent scope of this creation and should be stated.

In summary, the improved structure of the milling cutter in this invention can truly achieve its effect and purpose when used. Therefore, this invention is truly a creation with excellent practicality. In order to meet the application requirements of new patents, an application is filed in accordance with the law. I hope that the review committee will approve this case as soon as possible to protect the creator's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write to instruct. The creator will do his best to cooperate and feel very grateful.

1: Milling cutter

11: Handle

12: Spiral blade

120: Spiral groove

13: Three-edged cutting head

D: Outer diameter of handle

L1: cutting groove length

Claims (6)

An improved milling cutter structure includes a milling cutter, and the milling cutter is provided with a shank, and a spiral blade portion extends staggered on one side of the shank, and a plurality of spiral grooves are provided between the spiral blade portions, and a three-blade cutting head is provided at one end of the spiral blade portion, and a first cutting edge, a second cutting edge and a third cutting edge are provided in the three-blade cutting head at equal distances, and at least one cutting groove is provided on each of the first cutting edge, the second cutting edge and the third cutting edge. The improved milling cutter structure as described in claim 1, wherein a plurality of auxiliary cutting grooves are provided on both sides of the cutting groove on the first cutting edge, the second cutting edge and the third cutting edge. The improved milling cutter structure as described in claim 1, wherein the width of the cutting groove is 10% to 20% of the outer diameter of the shank on the shank. The improved milling cutter structure as described in claim 1, wherein the depth of the cutting groove is 1% to 5% of the outer diameter of the shank on the shank. The improved milling cutter structure as described in claim 1, wherein the length of the cutting groove is 0.1mm~1mm. The improved milling cutter structure as described in claim 1, wherein the milling cutter can be a general milling cutter or a micro milling cutter.

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