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End mill

A technology of end milling cutter and base end, which is applied in the direction of milling cutter, reamer, cutter for milling machine, etc. It can solve the problems such as difficult cutting for a long time, and achieve the effects of reducing frictional heat, suppressing vibration, and suppressing interlayer peeling

Inactive Publication Date: 2011-10-26
G N TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When cutting FRP resin with low thermal conductivity, the above-mentioned welded state is likely to occur, and it becomes difficult to cut for a long time by high-speed rotation of the cutting edge.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0079] In the end mill of Example 1, in figure 1 represents a stereogram, and in addition, in figure 2 and image 3 The figure in the middle shows the structure explanatory drawing of the periphery of the spiral groove 1 and the land 2 when viewed from the front-end side of a blade part (front view), and when viewed from the side (side view). and, in Figure 4 , which shows an enlarged explanatory view of a section in the torsional direction of the first notch of the first land 21, and, in Figure 5 3 shows a perspective view of the diamond sintered state before the helical groove 1 or notch 3 is engraved in the manufacturing process of the end mill of the present invention.

[0080] In the end mill of Example 1, three spirals are formed at approximately equal intervals at a central phase interval of 120 degrees (in this case, the phase interval at the central position of each groove width 1w) around the rotation axis on the front end side. Groove 1, thus, a total of thre...

Embodiment 2）

[0092] To the end mill of embodiment 2, in Figure 6 represents a stereogram, and in addition, in Figure 7 and Figure 8 In , explanatory diagrams showing the structure of the spiral groove 1 and the land 2 when viewed from the front end side of the blade portion (front view) and when viewed from the side (side view). Figure 9 It is a perspective view of the sintered body 42 in the manufacturing process.

[0093] In the end mill of Example 2, five spiral grooves 1 are formed at approximately equal intervals at a center phase interval of 70 to 74 degrees (phase interval at the center position of each groove width 1w) centered on the rotation axis on the front end side. Here, a total of five lands 2 consisting of one land group and three remaining lands 23 are formed at unequal positions in which adjacent intervals are slightly increased or decreased. And, the first of the three margins 2 is used as the first margin 21, the second is used as the second margin 22, and the th...

Embodiment 3）

[0101] Regarding the end mill of Example 3, in Figure 10 The figure in the figure shows the structure explanatory drawing of the periphery of the helical groove 1 and the land 2 seen from the front-end|tip side of a blade part.

[0102] In the end mill of Example 3, five helical grooves 1 are formed at approximately equal intervals at a center phase interval of 70° to 74° (phase interval at the center position of each groove width 1w) around the rotation axis on the front end side. Thus, a total of five margins 2 consisting of two margin groups A and B and one remaining margin 23 are formed at unequal positions with slightly increased or decreased adjacent intervals. The first of the five margins 2 in total is the first margin 21 of the first group, the second is the second margin 22 of the first group, and the third is the first margin of the second group. As for the bands 21 , the fourth one is used as the second margin 22 of the second group, and the fifth one is used as ...

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PUM

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Abstract

Disclosed is a router end mill which enables prevention of whitening of the cut surface, interlayer separation, and resin fusion during the milling, enables milling of FRP resin by fast rotation for a long time, and has an excellent durability. An odd number of lands (2) extending while meandering are formed by meandering grooves (1) between neighboring meandering grooves (1). First and second nicks (31, 32) forming apexes and arranged across the land width along a predetermined first direction (a1) are formed in each land of at least one pair of neighboring lands out of the odd number of lands (2). Finishing blades are formed on the other land (23) than the pair of lands out of the odd number of lands (2).

Description

technical field [0001] The present invention relates to milling cutters used for cutting workpieces such as FRP resins, in particular, end mills with flat ends (planing) or end mills with a drilling function having a cutting edge at the front end. (Including radius end mills, ball end mills). Background technique [0002] FRP (Fiber Reinforced Resin) has excellent specific gravity, elastic modulus, fatigue strength, and corrosion resistance, so it is used in various molding resins such as aircraft, ships, and automobiles, as well as home appliances and sporting goods. The reinforcing fiber used in FRP is generally glass fiber (GFRP), but there are higher strength carbon fiber compound resin (CFRP) and aramid fiber compound resin (AFRP). [0003] Since these various fiber compounding resins are solidified and formed together with the compounding fibers, if they are processed with a conventional end mill with a notch (for example, refer to Patent Document 1), whitening of the...

Claims

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Application Information

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IPC IPC(8): B23C5/10B23D77/00
CPCB23C5/10B23C2210/088B23C2220/605B23C2226/315B23C2226/37B23P15/34
Inventor 西村隆侑西村隆文
Owner G N TOOL
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