TWM639122U - Structural Improvement of Milling Cutter - Google Patents

Abstract

This work is related to the improvement of the structure of a milling cutter, especially refers to the center position of the blade surface of the milling cutter is offset towards the central axis of the milling cutter, and the cutting points are respectively provided to form the gap where each blade surface connects with each cutting point. The connecting surface is used to cause the cutting point to protrude from the blade through the connecting surface, and the central axis of the milling cutter is provided with a central axis point at one end of the blade, and then a straight ridge is provided at each cutting point toward the central axis point , and each ridge line forms a chip space at the central axis point to improve the chip removal efficiency during rotary cutting, and reduce the phenomenon of wear and cracking caused by chip jamming, thereby ensuring the quality of the machined surface during rotary cutting.

Description

Structural Improvement of Milling Cutter

This work is related to the improvement of the structure of a milling cutter, especially refers to the center position of the blade surface of the milling cutter is offset towards the central axis of the milling cutter, and the cutting points are respectively provided to form the gap where each blade surface connects with each cutting point. The connecting surface is used to cause the cutting point to protrude from the blade through the connecting surface, and the central axis of the milling cutter is provided with a central axis point at one end of the blade, and then a straight ridge is provided at each cutting point toward the central axis point , and each ridge line forms a chip space at the central axis point to improve the chip removal efficiency during rotary cutting, and reduce the phenomenon of wear and cracking caused by chip jamming, thereby ensuring the quality of the machined surface during rotary cutting.

According to the trend of today's electronic products towards thinner and smaller designs, the volume requirements of various electronic products have become smaller, so the manufacturing and processing of various electronic components inside electronic products will become more and more sophisticated, and make electronic products The size of the printed circuit board that can be used for setting the position of the electronic component group must also be reduced accordingly. Therefore, in the manufacturing process of the printed circuit board, the printed circuit that conforms to the position of the memory pin must be preset on the circuit board, and because various types of memory The number of body pins is not the same, so the circuit board must be milled to match the number of memory pins to match the pin installation of the memory, but the volume of the memory is quite small and there are many pins, so The pin spacing of the memory is also quite small, so the spacing between the matching lines on the circuit board will also be very small, and care must be taken during milling to avoid contact between adjacent lines.

Moreover, the cutting edge of the milling cutter, in the milling process of the milling cutter processing operation, due to the ductility of the metal circuit board layout, the milling cutter cannot cut the metal circuit board on the circuit board evenly. The circuit board will be twisted and bent, which will make the circuit board unusable, that is, become a defective product, and increase the manufacturing cost, which is not in line with economic benefits. In addition, the milling cutter will generate high temperature during processing, but due to the cutting edge of the milling cutter The heat dissipation effect is not good, and the cutting edge of the milling cutter is easily passivated due to high temperature, so that the cutting edge of the milling cutter can no longer be used for milling, and the cutting edge must be re-grinded before the milling operation can be performed, which will shorten the use of the milling cutter life.

Therefore, how to solve the deficiencies and subsequent problems and troubles in the chip removal function of the drill and maintain the rigidity of the structure is the direction that relevant manufacturers engaged in this industry want to study and improve.

Therefore, in view of the above-mentioned problems and deficiencies, the creators collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, after continuous trial and modification, they designed this structure with milling cutters. Improved model patents were born.

The main purpose of this creation is to improve the structure of the milling cutter. It includes a milling cutter. The milling cutter has a shank, and a blade extends from one side of the shank, and a groove is provided between the blade and the shank. , and the top of the blade is provided with a plurality of arc-shaped blade surfaces, and the center top positions of the multiple blade surfaces are offset towards the central axis of the milling cutter, and a cutting point is respectively provided to form a connection between each blade surface and each cutting edge. The point is an arc-shaped connecting surface, which is used to make the cutting point protrude from the blade through each connecting surface, and the central axis of the milling cutter is provided with a central axis point at one end of the blade, and then at each cutting point toward the central axis There are linear ridges in the point direction, and the intersecting ridges will form a chip space at the central axis point, and the grooves are recessed in the direction of the shank where each edge surface of the blade connects to the outer edge surface of the milling cutter. Spiral A plurality of chip flutes extended in a spiral shape to use the chip space to improve the chip removal efficiency during rotary cutting, and when the chips generated by the rotating cutting of the milling cutter are guided to each chip flute through each ridge line, the chips are discharged. It is used to reduce the phenomenon of wear or cracking caused by chips, thereby ensuring the quality of the machined surface during rotary cutting.

Another purpose of this invention is that the chip space is to provide a space for air circulation to cool down the high temperature generated during the milling rotary cutting to reduce the passivation of the milling cutter, thereby prolonging the service life of the milling cutter.

1: milling cutter

11: handle

12: Blade

121: blade surface

122: Cutting point

123: joint surface

124: Central axis point

125: Ridge

126: Chip space

13: Groove

131: chip flute

[Picture 1] is a three-dimensional appearance diagram created for this work.

[Picture 2] is a side view of this creation.

[Picture 3] is a partially enlarged picture created for this work.

In order to achieve the above-mentioned purpose and effect, the technical means adopted in this creation, its structure, and the method of implementation, etc., are hereby drawn to illustrate in detail the characteristics and functions of the preferred embodiment of this creation as follows, so as to fully understand it.

Please refer to Figures 1, 2, and 3, which are the three-dimensional appearance diagram, side view and partial enlarged view of this creation. It can be clearly seen from the figure that the structural improvement of the milling cutter of this creation includes a milling cutter 1, The milling cutter 1 has a shank 11, and a blade 12 is extended on one side of the shank 11, and a groove 13 is provided between the blade 12 and the shank 11. The plurality of arc-shaped blade surfaces 121 are provided with cutting points 122 after the central top positions of the plurality of blade surfaces 121 are shifted toward the central axis of the milling cutter 1, so that each blade surface 121 connects with each cutting point 122. arc-shaped connection The surface 123 is used to cause the cutting point 122 to protrude from the blade portion 12 through the connecting surface 123, and the central axis of the milling cutter 1 is provided with a central axis point 124 at one end of the blade portion 12, and then at each cutting point 122 toward the central axis point 124 There are linear ridges 125 in the direction, and each ridge 125 intersects at the central axis point 124 to form a chip space 126, and the groove 13 is connected to the outer edge surface of the milling cutter 1 on each edge surface 121 of the blade 12. A plurality of flutes 131 extending spirally toward the handle 11 are recessed.

The structural improvement of the milling cutter of the present invention is applied in practice. The cutting points 122 of the milling cutter 1 are respectively contacted on the surface of the preset circuit board, and the blades 121 of the blade 12 are rotated by the milling cutter 1. Carry out rotary cutting, and in the process of cutting, through the cutting point 122 that the center position of each edge surface 121 that is circular arc shape is respectively offset toward the central axis of milling cutter 1, during rotary cutting, stress and impact force are avoided from being concentrated on the Each blade surface 121, thereby preventing each blade surface 121 from cracking or breaking, and then using the chip space 126 formed by each cutting point 122 towards the ridge line 125 in the direction of the central axis point 124, to improve the row during rotary cutting. Chip efficiency, and when the debris generated by the rotary cutting of the milling cutter 1 is guided to each chip discharge groove 131 through each ridge line 125, the debris is discharged to reduce the wear or cracking caused by chip jamming, thereby ensuring that the rotary cutting The purpose of the machined surface quality, and the chip space 126 is to provide a space for air circulation to cool down the high temperature generated during the milling rotary cutting to reduce the passivation of the milling cutter 1, thereby prolonging the use of the milling cutter 1 purpose of life.

In addition, the ridge line 125 of the present invention can also be applied to the arc-shaped blade portion 12 with at least two or more blades, and the above-mentioned milling cutter 1 can be a general-type milling cutter or a micro-milling cutter. The handle 11 can be a straight handle or an undercut, and can be integrally formed with the groove 13 or formed separately.

The above is only a preferred embodiment of this creation, and does not limit the patent scope of this creation. Therefore, all simple modifications and other modifications made by using the instructions and drawings of this creation Changes in effective structure should be included in the patent scope of this creation in the same way, and Chen Ming is hereby agreed.

To sum up, the improvement of the structure of the milling cutter of this creation can really achieve its effect and purpose when it is used. Therefore, this creation is a creation with excellent practicability. I hope that the judging committee will approve this case as soon as possible to protect the hard work of the creators. If the Jun Ju judging committee has any doubts, please feel free to send a letter to instruct. The creator will do its best to cooperate, and I really appreciate it.

1: milling cutter

11: handle

12: Blade

121: blade surface

122: Cutting point

123: joint surface

124: Central axis point

125: Ridge

13: Groove

131: chip flute

Claims (3)

An improved structure of a milling cutter includes a milling cutter, the milling cutter has a shank, and a blade extends from one side of the shank, and a groove is provided between the blade and the shank. The other side of the blade portion of the shank is respectively provided with a circular arc-shaped blade surface with at least two blades or more than two blades, and the center top position of each blade surface is offset toward the central axis of the milling cutter. Cutting points are respectively set after moving to form a curved connecting surface where each cutting point is connected to each cutting point, so that each cutting point protrudes from the cutting edge through the connecting surfaces, and the milling The central axis of the knife is provided with a central axis point at one end of the blade, and then a linear ridge is provided at each cutting point toward the central axis point, and the intersection of each ridgeline will form a chip at the central axis point space, and the groove portion is provided with a plurality of flutes extending spirally toward the shank at the places where the edge surfaces of the blade respectively connect with the outer edge surface of the milling cutter. The structural improvement of the milling cutter as described in Claim 1, wherein the milling cutter is a general type milling cutter or a micro milling cutter. The structural improvement of the milling cutter as described in Claim 1, wherein the shank is a straight shank or undercut structure.

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