TWI445584B - Chip exclusion device and drill using same - Google Patents

Description

Chip remover and drill bit

The present invention relates to a chip remover and a drill bit for chip removal.

When the workpiece is drilled (hole) by the drill bit, a large amount of drill cuttings are generated, which are continuously and continuously discharged from the spiral groove portion of the drill until the workpiece is separated from the drill. However, during the drilling process, some drill cuttings will still wrap around the drill bit. This situation will be more complicated as the drill bit continues to drill down, and the resulting high temperature and cutting resistance will affect the operation of the drill bit.

In view of the above, it is necessary to provide a chip remover that can prevent the cuttings from being entangled and a drill bit having the chip remover.

A chip remover for removing drill cuttings attached to a surface of a drill bit when drilling a workpiece, the drill bit comprising a clamping portion, a drill pipe and a head, the clamping portion and the head being oppositely disposed on the drill pipe Both ends. The chip remover is a cylindrical structure, the chip remover includes a telescopic deformation body, a fixed end and a chip removing end, and the telescopic deformation body is sleeved on the drill pipe and can be along the axial direction of the drill pipe The inner diameter of the telescopic deformation body is greater than or equal to the outer diameter of the drill pipe, and the fixed end and the chip removal end are disposed at opposite ends of the telescopic deformation body, and the fixed end is disposed adjacent to the telescopic deformation body. One end of the clamping portion is fixed to the clamping portion, and the chip removing end is disposed at an end of the telescopic deformation body near the drill bit, which is a circle surrounding the telescopic deformation body Disk-like structure.

A drill bit includes a grip portion, a drill rod, and a head. The clamping portion and the head portion are oppositely disposed at both ends of the drill pipe. The drill bit further includes a chip remover, the chip remover is a cylindrical structure, the chip remover includes a telescopic deformation body, a fixed end and a chip removal end, and the telescopic deformation body is sleeved on the drill pipe, and The inner diameter of the telescopic deformation body is greater than or equal to the outer diameter of the drill rod, and the fixed end and the chip removal end are disposed at opposite ends of the telescopic deformation body. The fixed end is disposed at one end of the telescopic deformation body near the clamping portion, and is fixed to the clamping portion, and the chip removing end is disposed at an end of the telescopic deformation body near the bit, which is a surrounding A disc-shaped structure in which the main body of the telescopic deformation body is turned.

The chip remover provided by the present invention can remove the cuttings to the periphery of the chip-removing end of the disc-shaped structure during drilling, and prevent the long drill cuttings from being re-wound onto the chip remover and the drill bit.

100‧‧‧Dust remover

11‧‧‧ side wall

13, 14‧‧‧ End of the telescopic deformation body

30‧‧‧ Chip removal end

210‧‧‧Clamping Department

221, 222‧‧‧ both ends of the drill pipe

300‧‧‧Workpiece

10‧‧‧Flexible deformation subject

12‧‧‧through slot

20‧‧‧ fixed end

200‧‧‧ drill bit

211‧‧‧ring groove

230‧‧‧ head of the drill bit

1 is a schematic view of a chip remover according to a first embodiment of the present invention; FIG. 2 is a schematic view of the chip remover of FIG. 1 mounted on a drill bit; FIG. 3 is a schematic view showing the state of the chip remover of FIG. 1; A schematic view of a chip remover according to a second embodiment of the present invention; and FIG. 5 is a schematic view showing the state of the chip remover of FIG.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2, a chip remover 100 according to an embodiment of the present invention is provided. The chip remover 100 is used for chip removal when the drill bit 200 processes the workpiece 300. The drill bit 200 includes a clip The holder 210, the drill pipe 220 and the head 230. The clamping portion 210 and the head portion 230 are oppositely disposed at opposite ends 221 and 222 of the drill pipe 220. The clamping portion 210 is formed with an annular groove 211 for fixing the chip remover 100.

The chip remover 100 is a cylindrical structure. In the present embodiment, the chip remover 100 is cylindrical. The chip remover 100 includes a telescopic deformation body 10, a fixed end 20, and a chip removing end 30.

The telescopic deformation body 10 is sleeved on the drill pipe 220 and can be expanded and contracted along the axial direction of the drill pipe 220. In the present embodiment, the telescopic deformation body 10 is made of spring steel. Of course, the telescopic deformation body 10 can also be made of other elastic materials, such as rubber, plastic, polymer materials, and the like. The length of the telescoping body 10 when fully extended is approximately equal to the length of the drill pipe 220. The telescopic deformation body 10 includes a side wall 11 . A through groove 12 is defined in the side wall 11. The inner diameter of the side wall 11 is D1. The inner diameter D1 of the side wall 11 is greater than or equal to the outer diameter D2 of the drill pipe 220. In the present embodiment, the inner diameter D1 of the side wall 11 is slightly larger than the outer diameter D2 of the drill pipe 220. The through groove 12 may be a plurality of curved grooves extending around the circumferential direction of the side wall 11 or a continuous spiral groove extending around the circumferential direction of the side wall 11. In the embodiment, the through groove 12 is spirally opened on the side wall 11 to facilitate the easy flushing of the chip liquid to the drill pipe 220, and the elastic deformation body 10 can be made more elastic. When the drill bit 200 does not use the chip liquid, the telescopic deformation body 10 may not include the through groove 12.

The fixed end 20 and the chip removing end 30 are disposed at opposite ends 13 and 14 of the telescopic deformation body 10 . The fixed end 20 and the chip removing end 30 are integrally formed with the telescopic deformation body 10 . The fixed end 20 is disposed on the end 13 of the telescopic deformation body 10 adjacent to the clamping portion 210 and is fixed to the clamping portion 210. In this embodiment, the The fixed end 20 is clamped in the annular groove 211 of the clamping portion 210. Of course, the fixed end 20 can also be fixed to the drill bit 200 by screwing or snapping.

The chip removal end 30 is disposed adjacent one end 14 of the head 230 of the drill bit 200. The chip removing end 30 is a disk-like structure that surrounds the telescopic deformation body 10 one turn. The chip removing end 30 may be an umbrella structure substantially the same as the shape of the head 230 of the drill bit 200, or may be a planar structure. In the embodiment, the chip removing end 30 adopts a planar disc structure. In this embodiment, the inner diameter of the chip removing end 30 is D3, and the inner diameter D3 of the chip removing end 30 is greater than or equal to the outer diameter D2 of the drill pipe 220. In the present embodiment, the inner diameter D3 of the chip removing end 30 is slightly larger than the outer diameter D2 of the drill pipe 220.

Referring to FIG. 2 and FIG. 3 , when the drill bit 200 does not start working, the chip remover 100 is clamped into the annular groove 211 of the clamping portion 210 through the fixed end 20 . While the chip removing end 30 abuts against the surface of the workpiece 300, the telescopic deformation body 10 is in a fully extended state. When the drill bit 200 is in operation, the chip remover 100 rotates with the drill bit 200, and since the chip removing end 30 is blocked by the surface of the workpiece 300, the chip removing end 30 is compressed as the drill bit 200 is drilled down. The telescopic deformation body 10 will be described. The drill cuttings 310 will be remote from the drill bit 200 as they are blocked by the chip removal end 30 upon discharge. The chip removing end 30 is designed as a disc structure not only to dig the cuttings, but even if the cuttings are very long, due to the large area of the chip removing end 30, the drilled cuttings can not be re-wound until On the chip 100 and the drill bit 200.

Please refer to FIG. 4 and FIG. 5 , which are a chip remover 400 according to a second embodiment of the present invention. The chip remover 400 is substantially the same as the chip remover 100 provided by the first embodiment, except that the telescopic deformation body 410 of the chip remover 400 does not have a through groove, and the chip remover 400 can be Use without the use of cutting fluid. When the chip remover 400 is in operation, its telescopic deformation body 410 is compressed, due to the telescopic deformation body 410 There is no through groove, but it is made of an elastic material itself, so that the side wall 411 of the telescopic deformation body 410 becomes curved when compressed.

The chip remover provided by the present invention can remove the cuttings to the periphery of the chip-removing end of the disc-shaped structure during drilling, and prevent the long drill cuttings from being re-wound onto the chip remover and the drill bit.

In addition, those skilled in the art can make other changes in the spirit of the invention, and all changes that are made according to the spirit of the invention should be included in the scope of the invention.

100‧‧‧Dust remover

11‧‧‧ side wall

13, 14‧‧‧ End of the telescopic deformation body

30‧‧‧ Chip removal end

10‧‧‧Flexible deformation subject

12‧‧‧through slot

20‧‧‧ fixed end

Claims (10)

A chip remover for removing drill cuttings attached to a surface of a drill bit when drilling a workpiece, the drill bit comprising a clamping portion, a drill pipe and a head, the clamping portion and the head being oppositely disposed on the drill pipe The two ends of the method are improved in that the chip remover is a cylindrical structure, and the chip remover comprises a telescopic deformation main body, a fixed end and a chip removing end, and the telescopic deformation main body is sleeved on the drill pipe, and The inner diameter of the telescopic deformation body is greater than or equal to the outer diameter of the drill pipe, and the fixed end and the chip removal end are disposed at opposite ends of the telescopic deformation body, a fixed end is disposed at an end of the telescopic deformation body adjacent to the clamping portion, and is fixed to the clamping portion, wherein the chip removing end is disposed at an end of the telescopic deformation body near the drill bit, And a disk-shaped structure that is surrounded by the telescopic deformation body and has a size larger than the telescopic deformation body. The chip remover of claim 1, wherein the telescopic deformation body has a through groove extending through a side wall thereof. The chip remover of claim 2, wherein the through groove is spiral. The chip remover of claim 1, wherein the chip removing end is an umbrella structure. The chip remover of claim 1, wherein the chip removing end is a planar structure. A drill bit includes a clamping portion, a drill rod and a head, the clamping portion and the head portion are oppositely disposed at opposite ends of the drill rod, and the improvement is that the drill bit further comprises a chip remover, The chip remover is a cylindrical structure, the chip remover includes a telescopic deformation body, a fixed end and a chip removing end, and the telescopic deformation body is sleeved on the drill pipe and can be extended and contracted along the axial direction of the drill pipe The inner diameter of the telescopic deformation body is greater than or equal to the outer diameter of the drill pipe, the fixed end and the chip removal end are disposed at opposite ends of the telescopic deformation body, and the fixed end is disposed on the telescopic deformation body Adjacent to one end of the clamping portion and fixed to the clamping portion, the chip removing end is disposed at The telescopic deformation body is adjacent to one end of the drill bit, and is a disk-shaped structure that is surrounded by the telescopic deformation main body and has a size larger than the telescopic deformation main body. The drill bit of claim 6, wherein the shank is provided with a fixing structure for fixing the fixed end of the chip remover. The drill bit according to claim 6, wherein the telescopic deformation body has a through groove extending through a side wall thereof. The drill bit of claim 6, wherein the chip removing end is an umbrella structure. The drill bit of claim 6, wherein the chip removing end is a planar structure.