JP3129208U - Material structure of micro cutting tool - Google Patents

Abstract

The present invention provides a material structure of a micro-type cutting tool that has a small circular diameter and volume, requires a small amount of tungsten carbide material, and can effectively reduce the manufacturing cost.
A handle portion and a blade portion, which are proportional to a predetermined circle diameter, are coupled. The handle portion is made of stainless steel and has a connecting surface formed on one side surface, and a blade portion is installed on the connecting surface. The blade portion is formed of tungsten carbide, the corresponding connection surface is fixedly coupled to the connecting surface of the handle portion, and the connection between the connecting surface of the handle portion and the corresponding connection surface of the blade portion is proportional to a predetermined circle diameter. The circle diameter of the blade portion is 20 to 70% of the handle portion circle diameter.
[Selection] Figure 2

Description

  The present invention relates to a material structure of a micro cutting tool, and more particularly to a material structure of a micro cutting tool that can reduce the manufacturing cost by reducing the amount of tungsten carbide used.

Today, electronic products pursue lightness, smallness, and smallness, and the volume of various electronic products is reduced. For this reason, the manufacture and processing of various parts incorporated in electronic products are relatively precise. Various electronic products are always provided with a printed circuit board. The volume of this printed circuit board also decreases as the volume of electronic products is reduced. Therefore, in the printed circuit board manufacturing process, a hole is made on the circuit board with a micro-type cutting tool, and the inner circuit of the circuit board is formed. It is connected. However, the material of the conventional micro cutting tool is made of tungsten carbide and integrally molded with this tungsten carbide. This kind of cutting tool head has the advantages of good rigidity and hardness and long service life, but the cost is very high, and the cutting tool head belongs to consumer goods, so its economic cost is also high. ing.

There is another type in which a stainless steel handle and tungsten carbide are used, and after shrinking by soldering or a high-frequency heating method, it is formed into a circular bar shape, and this circular bar body is processed into a cutting tool head. However, in this method, the material usage rate of tungsten steel is too high, the cost cannot be significantly reduced, and in the production process, since two types of materials are polished simultaneously, the yield rate is not increased. There is a disadvantage that the processing cost cannot be reduced.

  The material of the cutting tool does not have a large size difference between the handle portion and the blade portion, but when the two are combined, the two central axes must reliably correspond to each other. However, conventionally, the handle portion and the blade portion are installed upright and welded. For this reason, the material cost has increased because the concentricity between the handle portion and the blade portion needs to be accurate.

  The present invention has been made in view of the above circumstances, and a handle portion and a blade portion that form a predetermined circle diameter ratio are combined in advance, and the handle portion and the blade portion are installed at a different circle diameter ratio, and further different materials An object of the present invention is to provide a material structure of a micro-type cutting tool that can reduce the manufacturing cost by reducing the amount of tungsten carbide material used.

The present invention comprises a material structure of a micro-type cutting tool comprising a handle portion sandwiched by a tool, having a blade portion on one side surface of the handle portion, and previously connecting the handle portion and the blade portion.
The handle portion is formed of stainless steel, and a connecting surface is formed on one side surface,
The blade portion is formed of a tungsten carbide material, and is fixed to the connecting surface of the handle portion, and includes a corresponding connecting surface that is joined to the connecting surface of the handle portion at a predetermined circle diameter ratio.

  In one aspect of the present invention, the cutting tool is a stainless steel handle portion, and the handle portion is provided with a connecting surface on one side, while the circular bar of the blade portion is a tungsten carbide material, and the corresponding connection surface is the handle portion of the handle portion. Fixed connection with articulating surface. The connecting surface of the handle portion and the corresponding connecting surface of the blade portion are proportional to a predetermined circle diameter, and the blade portion circle diameter is 20 to 70% of the circle diameter of the handle portion. In addition, the handle and blade are manufactured from different materials, the blade has a small circle diameter, small volume, and requires less tungsten carbide material, effectively reducing manufacturing costs and meeting economic costs. The material structure of the micro-type cutting tool with good material strength.

  In another aspect of the present invention, the circular diameter ratio between the handle portion and the blade portion is such that the handle portion is 1 and the blade portion is 0.2 to 0.7. And a handle | steering-wheel part and a blade part are joined in the horizontal direction of a horizontal system with the jig module installed previously, a handle | steering-wheel part and a blade part couple | bond together correspondingly, and it has favorable concentricity.

  The material structure of the micro cutting tool of the present invention has an advantage that the manufacturing cost can be reduced because the circular diameter is small, the volume is small, and the tungsten carbide material used is small.

  Embodiments of the present invention will be described below with reference to the drawings.

[Example 1]
1, 2, 3, and 4 are a side view, a side exploded view, a side view of a jig module, and a side view of a cutting tool processing step, showing a first embodiment of the present invention.

  The material structure of the micro cutting tool according to the first embodiment of the present invention is composed of parts of the handle portion 1 and the blade portion 2. The handle portion 1 is made of stainless steel, has a connecting surface 11, and includes a clamping portion 12 for clamping the device on the other side. The blade portion 2 is formed of a tungsten carbide material, and one side surface is a corresponding connection surface 21.

  When assembling the above-described parts, the connecting surface 11 of the handle portion 1 and the corresponding connecting surface 21 of the blade portion 2 correspond to each other, and the handle portion 1 and the blade portion 2 are placed on the jig module 3. The height difference step 31 generated by the jig module 3 matches the circular diameter difference between the handle portion 1 and the blade portion, and corresponds to the center axis lines 13 and 23 of the handle portion 1 and the blade portion 2 accurately by the horizontal lateral position correspondence method. To do. Furthermore, since it has a good concentricity, it corresponds to the handle portion 1 and the blade portion 2 in a speedy and accurate manner. In addition, the handle portion 1 and the blade portion 2 are fixedly coupled to each other by a machining operation, and materials necessary for the micro cutting tool are combined, and the handle portion 1 and the blade portion 2 are manufactured from different materials. That is, the blade portion 2 has a small circular diameter, a small volume, and a small amount of tungsten carbide material, so that the manufacturing cost is reduced and the working efficiency is effectively improved.

  After the handle part 1 and the blade part 2 are connected and joined, the 11 connecting surfaces of the handle part 1 are subsequently polished, and the 11 connected surfaces are polished and formed on the inclined part 14 having a predetermined inclination.

  Further, the head 31 of the jig module 3 is adjusted by changing in proportion to the handle portion 1 and the blade portion 2, and the handle portion 1 and the blade portion 2 are placed there. Thereby, the central axes 13 and 23 automatically correspond to the positions, and the concentricity between the handle portion 1 and the blade portion 2 is improved.

  D: d which is a circular diameter ratio between the handle portion 1 and the blade portion 2 is a predetermined proportionality, and this proportional value is a proportionality (1: 20% to 70%). That is, the handle having a circle diameter of a relatively large area, that is, the circle diameter (d = 20% to 70%) of the blade portion 2 with respect to the circle diameter (D = 1) of the handle portion 1. The blade portion 2 can be made to correspond to the portion 1 in position.

[Examples 2 and 3]
5, 6, and 7 are a process side view of another embodiment of the present invention, a side view of another embodiment, and a side view of another embodiment. In the handle portion 1, the inclined portion 14 is first polished at 11 locations of the connecting surface, and then the connecting surface 11 and the corresponding connecting surface 21 of the blade portion 2 are made to correspond to each other. Then, it is placed on the jig module 3, and the center axis lines 13 and 23 of the handle portion 1 and the blade portion 2 are accurately positioned by the drop step 31 of the jig module 3, and the handle portion 1 and the blade portion 2 are connected and coupled. A small cutting tool is completed.

  Further, the connecting surface 11 of the handle portion 2 and the corresponding connecting surface 21 of the blade portion 2 are connected and joined by a method such as post-position soldering or strong adhesive.

  The above-described embodiment is an embodiment of the present invention and does not limit the scope of the present invention. The material structure of the micro cutting tool of the present invention is that the handle portion 1 and the blade portion 2 are formed of different materials, and the circular diameter of the blade portion 2 is small and the volume is small. Further, since the amount of tungsten carbide forming the blade portion is small, the manufacturing cost is effectively reduced, and the handle portion 1 and the blade portion 2 are larger in the ratio of the diameter of the handle portion 1 and the blade portion 2 to a predetermined ratio. In order to correspond to the position of the circle diameter area, the position is corresponded quickly and accurately. Further, by placing the handle portion 1 and the blade portion 2 on the jig module 3 by the drop step 31 of the jig module 3, the handle portion 1 and the blade portion 2 achieve good concentricity.

  The material structure of the micro cutting tool of the present invention has the following advantages.

  The circular diameter of the blade part 2 is 20% to 70% of the circular diameter of the handle part 1, and the handle part 1 and the blade part 2 are manufactured from different materials. Since the circular diameter of the blade portion 2 is small and the volume is small, less tungsten carbide material is used, which effectively reduces the manufacturing cost.

  After the connecting surface 11 of the handle portion 1 and the corresponding connecting surface 21 of the blade portion 2 correspond to each other, the handle portion 1 and the blade portion 2 are placed on the drop step 31 of the jig module 3 and are handled in a horizontal lateral position correspondence manner. In order to quickly correspond to the position, it has good concentricity, improves processing efficiency, and lowers manufacturing costs.

  After joining the 11 connecting surfaces of the handle portion 1 with the corresponding connecting surface 21 of the blade portion 2 first, the inclined portion 14 is polished. Further, when 11 connecting surfaces of the handle portion 1 are polished first to form an inclined portion, and then the connecting surface 11 and the corresponding connecting surface 21 of the blade portion 2 are connected to each other in position, the handle portion 1 of the blade portion 2 is connected. Positional bonding becomes easy.

  The jig module 3 adjusts the height position of the drop stage 31 in accordance with the size proportional change of the handle portion 1 and the blade portion 2, and makes the center axis lines 13 and 23 of the handle portion 1 and the blade portion 2 correspond to the position quickly. .

In the present invention, the handle portion and the blade portion are manufactured from different materials, and the circular diameter of the blade portion is small and the volume is small. Furthermore, the manufacturing cost of the micro cutting tool can be reduced. The handle portion and the blade portion are coupled in a speedy position, and the handle portion and the blade portion are accurately positioned, providing good concentricity and lowering the manufacturing cost. The above is only one embodiment of the present invention, and does not limit the scope of the present invention. Therefore, all the structural changes in the description and schematic contents of the present invention are within the scope of the present invention.

It is a side view which shows Example 1 of this invention. It is a side exploded view showing Example 1 of the present invention. It is a side view of a jig module. It is a side view of a cutting tool processing process. It is a processing process side view of another Example of this invention. It is a side view of another Example of this invention. It is a side view of another Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handle part 11 Connecting surface 12 Clamping part 13 Center axis 14 Inclined part 2 Blade part 21 Joining surface 22 Cutting part 23 Center axis 3 Jig module 31 Drop head

Claims (3)

In the material structure of the micro-type cutting tool provided with a handle portion sandwiched between the tools and having a blade portion on one side surface of the handle portion, the handle portion and the blade portion being combined in advance,
The handle portion is formed of stainless steel, and a connecting surface is formed on one side surface,
The blade portion is formed of a tungsten carbide material, is fixed to the connection surface of the handle portion, and includes a corresponding connection surface that is joined to the connection surface of the handle portion at a predetermined circle diameter ratio. Material structure of small cutting tool.   2. The micro mold according to claim 1, wherein the connecting surface of the handle portion forms a proportional ratio of 1: 20% to 70% in a circle diameter between the circle diameters of the corresponding connecting surfaces of the blade portions. The material structure of the cutting tool.   The connecting surface of the handle portion is preliminarily bonded by a method such as soldering or adhesive between the corresponding connecting surfaces of the blade portion, and then the connecting surface portion is connected to the connecting surface portion after the handle portion and the blade portion are combined. 2. The material structure of a micro-type cutting tool according to claim 1, wherein the material structure of the micro-type cutting tool is bonded to the corresponding connecting portion of the blade portion after polishing to a predetermined inclination degree.

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