TWI744993B - Chip removal structure of turning tool - Google Patents

Abstract

A turning tool includes: a cutter head with a top surface and an end surface adjacent to each other; a protuberance protruding from the top surface of the cutter head, and an inclined surface of the protuberance is inclined toward the end surface of the cutter head; and a blade is fixed to the cutter The top surface of the head is defined from a turning feed direction, and a tip of the blade is in front of the oblique face of the ridge. The bulge is used as the chip removal structure of the turning tool, and the inclined surface helps the chip to turn at a certain angle, and guides the coolant to cut off the length of the chip to achieve the effect of elimination.

Description

Chip removal structure of turning tool

The present invention relates to the technical field of cutting, in particular to a turning tool, which has a chip removal structure.

Figure 4 depicts a known turning tool 80, which is divided into two parts: a tool shaft 81 and a tool head 82. In the figure, the cutter rod 81 and the cutter head 82 are designed as one body. The cutter head 82 forms a top surface 83 in the diameter direction, and the top surface 83 is adjacent to a side surface 84 and an end surface 85 of the cutter head 82. An installation groove 86 is inserted into the junction of the top surface 83, the side surface 84 and the end surface 85, and the installation groove 86 receives a blade 90. A fastener 95 like a screw or stud passes through the blade 90 and is locked to the cutter head 82 so that the blade 90 is fixed on the cutter head 82. The three exposed surfaces defining the blade 90 are the blade top surface 91, the blade side surface 92 and the blade end surface 93 respectively. The point at the junction of the blade top surface 91, the blade side surface 92 and the blade end surface 93 is regarded as the blade tip 94.

Fig. 5 shows that the turning tool 80 performs a cutting operation, and the tip 94 of the blade 90 cuts a chip 96 from the surface of a workpiece (not shown).

As shown in Fig. 6, the turning tool 80 moves along a turning feed direction 87. The top surface 83 of the tool head 82 has no blocking structure, so the length of the chip 96 can be reversed. The cutting chips 96 are curled, and there is a possibility of wrapping the blade 90 or the cutter head 82, causing the cutting chips 96 to obscure the sight of a user (not shown), and even damage the accuracy of the processing surface of the workpiece.

Therefore, how to eliminate the chips generated by the turning tool becomes an urgent problem to be solved by the present invention.

In view of this, the inventor of the present case provides a new turning tool with the main purpose of: adopting a chip removal structure to help the chips turn to a certain angle, help cut the length of the chips, achieve the effect of elimination, and solve the problems encountered by the prior art.

To achieve the above-mentioned purpose, the turning tool of the present invention includes: a tool head with a top surface and an end surface adjacent to each other; a protruding part protrudes from the top surface of the tool head, and an inclined surface of the protruding part is inclined toward the end surface of the tool head ; And, a blade is fixed on the top surface of the cutter head, defined from a turning feed direction, and a tip of the blade is in front of the oblique front of the bulge.

Wherein, the protruding portion is provided with a vertical wall, the vertical wall is adjacent to the inclined surface to form a slanted side, one end of the slanted side is adjacent to the top of the protruding portion, and the other end is higher than the end surface of the cutter head. The vertical wall is a curved surface, and the curved surface is perpendicular to the top surface of the cutter head. In addition, the standing wall forms an outlet.

In this way, the present invention uses the raised portion as the chip removal structure of the turning tool, and the inclined surface helps the chips to turn to a certain angle. The outlet guides the coolant to reduce the high temperature of the cutting operation, and it also cuts the length of the chip to achieve the effect of elimination.

In order to make the purpose, structure, features, and advantages of the present invention easy to understand, one or more embodiments are described in detail below in conjunction with the accompanying drawings.

Figure 1 is a perspective view showing a preferred embodiment of a turning tool 10. In the figure, the turning tool 10 is provided with a tool bar 11, and the tool bar 11 and a tool head 12 are designed as one body. In some embodiments, the tool bar 11 welds the tool head 12 to form a combined turning tool 10, which is also within the allowable range of the present invention.

The outer surface of the cutter head 12 is a circumferential surface, and the circumferential surface serves as the side surface 13 of the cutter head 12. Along the radial direction, the cutter head 12 forms a top surface 14, and the top surface 14 is adjacent to the side surface 13 and an end surface 15 of the cutter head 12. A mounting groove 16 is inserted into the junction of the side surface 13, the top surface 14 and the end surface 15, and the mounting groove 16 receives a blade 30.

Wherein, a raised portion 20 protrudes from the top surface 14 of the cutter head 12, an inclined surface 26 of the raised portion 20 is inclined toward the end surface 15 of the cutter head 12, and the inclined surface 26 is adjacent to a standing wall 22 to form an oblique edge 28, the oblique edge 28 One end is adjacent to the top of the raised portion 20 and is higher than the other end of the connecting end surface 15. In other words, the hypotenuse 28 is connected to one end of the end surface 15 and is closer to the axial center of the cutter head 12 than the other end adjacent to the top of the protruding portion 20.

In this embodiment, the vertical wall 22 is a curved surface, and the curved surface is perpendicular to the top surface 14 of the cutter head 12. In some embodiments, the standing wall 22 is a flat surface, which falls within the allowable scope of the present invention.

In addition, the vertical wall forms an outlet 24 leading to a flow channel 40 inside the turning tool 10, and an entrance 42 of the flow channel 40 is at the end or periphery of the tool bar 11. When the tool bar 11 is configured in a cutting machine or equipment, the flow channel 40 guides the coolant to flow to the outlet 24.

For example, a fastener 35 such as a screw or a stud passes through the blade 30 and locks the bit 12. Blocked by the wall surface of the installation groove 16, the blade 30 is fixed on the cutter head 12. The three exposed surfaces of the blade 30 are respectively the top surface 31, the side surface 32 and the end surface 33. The point where the top surface 31, the side surface 32 and the end surface 33 meet is regarded as the tip 34.

As shown in FIG. 2, the turning tool 10 performs a cutting operation, and the tip 34 of the blade 30 cuts a chip 23 from the surface of a workpiece (not shown).

In the figure, the raised portion 20 serves as the chip removal structure of the turning tool 10, and the inclined surface 26 helps the chip 23 to turn over a certain angle. Following the direction of arrow 21, the outlet 24 guides the coolant to reduce the high temperature of the cutting operation, and at the same time impacts the large area of the chip 23, which is enough to cut off the length of the chip 23 and achieve the effect of elimination.

In FIG. 3, it is defined according to a turning feed direction 17, and the cutting edge 34 of the insert 30 is in front of the inclined surface 26 of the bulge 20. During the cutting operation, the length of the chip 23 can extend in the opposite direction, and the bevel 28 of the inclined surface 26 is turned over, so that the large area of the chip 23 faces the outlet 24.

[Prior Art] 80: Turning tool 81: Toolholder 82: cutter head 83: top surface 84: side 85: end face 86: installation slot 87: Turning feed direction 90: blade 91: Knife top surface 92: knife side 93: Knife end face 94: Knife Point 95: Fastener 96: Chips 〔this invention〕 10: Turning tool 11: Toolholder 12: cutter head 13: side 14: top surface 15: end face 16: installation slot 17: Turning feed direction 20: Uplift 21: Arrow 22: Standing Wall 23: Chips 24: Exit 26: Bevel 28: Hypotenuse 30: Blade 31: Knife top surface 32: Knife side 33: Knife end face 34: Knife Point 35: Fastener 40: runner 42: entrance

Figure 1 depicts a preferred embodiment of the turning tool. Figures 2 and 3 show the relative relationship between the cutter head of the present invention and the chip at different angles. Figure 4 depicts a known turning tool. Figures 5 and 6 show the known relative relationship between the cutter head and the chip at different angles.

10: Turning tool

11: Toolholder

12: cutter head

13: side

14: top surface

15: end face

16: installation slot

20: Uplift

22: Standing Wall

24: Exit

26: Bevel

28: Hypotenuse

30: Blade

31: Knife top surface

32: Knife side

33: Knife end face

34: Knife Point

35: Fastener

40: runner

42: entrance

Claims (6)

A chip removal structure for turning tools includes: A cutter head (12) has a top surface (14) and an end surface (15) adjacent to each other; A raised portion (20) protrudes from the top surface (14) of the cutter head (12), and an inclined surface (26) of the raised portion (20) is inclined toward the end surface (15) of the cutter head (12); and An insert (30) is fixed on the top surface (14) of the cutter head (12), defined from a turning feed direction (17), and a cutting edge (34) of the insert (30) is on the inclined surface of the ridge (20) (26) Forward. The chip removal structure of the turning tool according to claim 1, wherein the raised portion (20) is provided with a vertical wall (22), and the vertical wall (22) is adjacent to the inclined surface (26) to form a hypotenuse (28). The chip removal structure of the turning tool according to claim 2, wherein the vertical wall (22) is perpendicular to the top surface (14) of the tool head (12). The chip removal structure of the turning tool according to claim 2, wherein the vertical wall (22) is a curved surface. The chip removal structure of the turning tool according to claim 2, wherein the vertical wall (22) forms an outlet (24). The chip removal structure of the turning tool according to claim 2, wherein one end of the hypotenuse (28) is adjacent to the top of the bulge (20) and is higher than the other end of the end surface (15) of the cutter head (12).

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