TWM568179U - Chip removing device for drilling tool - Google Patents

Abstract

A chip evacuation device has a first ring body and a second ring body, which are connected by a set of support members into a concentric circle structure and maintain a certain height. The set of support members are spaced apart from each other by a distance between the first ring body and the second ring body in the direction of the vortex, and are thus separated into a set of discharge ports. When the chip evacuation device is disposed in a drilling tool, the debris generated by the cutting tool is guided by the support member to the chip discharge port, thereby being excluded from the outside of the chip discharge device, relatively lifting the chip removal function, and having a depth limit effect.

Description

Chip removal device for drilling tools

This creation relates to mechanical equipment for cutting, and in particular to a chip evacuation device for a drilling tool.

Taiwan Patent No. I579078 discloses a limit sleeve structure which is composed of a sleeve, a limit cover and a slide stop. The sleeve has a through portion that rotates relative to the limit cover when the limit cover is sleeved on the through portion of the sleeve. The limiting cover has a sliding block groove for arranging the sliding member. When the sliding member contacts the working plane, the sliding member exerts a slip-proof effect, so that the limiting cover stops rotating, and the wear prevention working plane is achieved. efficacy.

However, the limit cover has no chip removal function. Moreover, the sleeve is clamped to a drill tail clamp, which causes assembly and disassembly to be quite laborious and time consuming.

Taiwan Patent No. D147775 discloses a depth limiting device which is used on a drilling tool to effectively solve the drawbacks of assembly and disassembly, which is laborious and time consuming, and has a chip discharging function.

The creator of the case provided a new chip removal device, the purpose of which is to use a vortex structure for the drilling tool to relatively enhance the chip removal function.

Due to the above object, the chip removing device of the present invention has a first ring body and a second ring body, and the two are connected by a group of supporting members into a concentric circle structure and maintain a certain height. The set of support members are spaced apart from each other by a distance between the first ring body and the second ring body in the direction of the vortex, and are thus separated into a set of discharge ports.

Wherein each support member has an outer end portion, an inner end portion and two side edges, the outer end portion being wider than the inner end portion, each side edge being curved to engage the same side of the outer end portion and the inner end portion .

The outer end is flush with the outer surface of the second annulus in view of the chip evacuation device. In terms of looking up the chip evacuation device, the inner end portion is flush with the first ring body to form a wall surface of a circular groove.

Thus, the chip removing device of the present invention is used in a drilling tool, and the chip generated by the cutting tool is guided by the supporting member to the chip discharging port, thereby being excluded from the outside of the chip discharging device, and relatively lifting the chip discharging function. Both have a deep limit effect.

In order to make the above objects, features and advantages of the present invention more comprehensible, one or more preferred embodiments are described in detail with the accompanying drawings.

10‧‧‧chip removal device

12‧‧‧ drill bit

20‧‧‧First ring

21‧‧‧ top surface

22‧‧‧ bottom

23‧‧‧Conical trough

24‧‧‧ round slot

25‧‧‧ round hole

30‧‧‧Second ring

31‧‧‧ top surface

32‧‧‧ bottom

33‧‧‧Circle

34‧‧‧through hole

40‧‧‧Support

41‧‧‧Discharge port

42‧‧‧Outer end

43‧‧‧Inside

44‧‧‧ side

H‧‧‧ Height

Figure 1 is a perspective view of a preferred embodiment of the inventive chip evacuation device.

Figure 2 is a perspective view of another angle of the chip removal device.

Figure 3 is a bottom view of the chip evacuation device.

Figure 4 is a plan view of the chip removal device.

Figure 5 is a side view of the chip evacuation device with the drill bit indicated by a dashed line.

Figures 1 through 5 illustrate a preferred embodiment of the chip evacuation device 10, using a drilling tool such as a drill bit 12.

Structurally, the chip evacuation device 10 has a first ring body 20 and a second ring body 30, which are connected by a set of support members 40 into a concentric circular structure, supporting the bottom surface 22 of the first ring body 20 to the second. The bottom surface 32 of the ring body 30 is maintained at a certain height H. The set of support members 40 are spaced apart from each other by a certain distance (or angle) and arranged between the first ring body 20 and the second ring body 30 in a Vortex direction, thereby being separated into a set of discharge ports 41. Each support member 40 is a sheet having a certain thickness, and the sheet body includes: an outer The end portion 42, an inner end portion 43, and two side edges 44, each side edge 44 engaging the same side of the outer end portion 42 and the inner end portion 43. Wherein the outer end portion 42 is wider than the inner end portion 43, the side edge 44 being curved.

From the top view of the chip evacuation device 10, the outer end portion 42 is flush with the outer surface of the second ring body 30. In view of the chip evacuation device 10, the inner end portion 43 projects beyond the wall of the second ring body 30 to form a through hole 34 until it is flush with the first ring body 20 to enclose the wall of a circular groove 24.

The circular groove 24 is formed in the bottom surface 22 of the first ring body 20. The first ring body 20 extends in the axial direction with a circular hole 25 which communicates the circular groove 24 with a conical groove 23 which is trapped in the top surface 21 of the first ring body 20. The diameter of the circular hole 25 is smaller than the diameter of the inner side of the circular groove 24.

In addition, the through hole 34 penetrates the top surface 31 and the bottom surface 32 of the second ring body 30 in the axial direction, and the diameter of the through hole 34 is larger than the diameter of the outer circumferential surface of the first ring body 20. The second ring body 30 has a ring groove 33 which is recessed into the bottom surface 32 of the second ring body 30 and located at the periphery of the through hole 34, so that the ring groove 33 and the through hole 34 maintain a concentric structure.

In use, the drill bit 12 passes through the circular aperture 25 of the first ring body 20 or over the drill bit 12 with the first ring body 20. At this moment, the wall surface of the first ring body 20 surrounding the circular hole 25 can be pressed or tightened to the outer surface of the drill bit 12, so that the chip removing device 10 and the drill bit 12 maintain the same rotationally coupled relationship without affecting the relative relationship of the first ring body 20. The bit 12 is slidably displaced to facilitate removal of the chip evacuation device 10 from the bit 12. Of course, the circular groove 24 reduces the contact area of the wall of the first ring body 20 around the circular hole 25 with the drill bit 12.

During drilling, the drill bit 12 performs a cutting operation on a workpiece (not shown), typically producing some continuous or broken debris that contacts the second ring body 30 and separates from the drill bit 12. A small amount of debris enters the chip evacuation device 10 through the through hole 34 of the second ring body 30, and can also be discharged from the chip discharge port 41 to the outside under the guidance of the side edge 44 of the support member 40, and the influence on the chip discharge device 10 is not Big. The second ring body 30 contacts the surface of the workpiece, and the hole depth of the workpiece reaches a preset value or an ideal value, and the power supply of the drilling device can be interrupted until the drill bit 12 is stationary, and the depth limit function is obtained.

Claims (9)

A chip evacuation device for a drilling tool, which has a first ring body (20) and a second ring body (30), which are connected by a set of support members (40) into a concentric circle structure and maintain a certain height ( H), the set of supports (40) are spaced apart from each other by a distance between the first ring body (20) and the second ring body (30) in the direction of the vortex, thereby separating into a set of chip discharge ports (41). The chip removing device for a drilling tool according to claim 1, wherein each support member (40) has an outer end portion (42), an inner end portion (43) and two side edges (44). The outer end portion (42) is wider than the inner end portion (43), and each side edge (44) is curved in engagement with the same side of the outer end portion (42) and the inner end portion (43). The chip removing device for a drilling tool according to claim 2, wherein the outer end portion (42) and the second ring body (30) are flush with respect to the chip removing device (10). of. The chip removing device for a drilling tool according to claim 2, wherein the inner end portion (43) protrudes from the second ring body (30) to form a pass in view of the chip removing device (10). The wall of the hole (34) is flush until the first ring body (20) encloses the wall of a circular groove (24). The chip removing device for a drilling tool according to claim 4, wherein the circular groove (24) is formed on a bottom surface (22) of the first ring body (20). The chip removing device for a drilling tool according to claim 5, wherein the top surface (21) of the first ring body (20) has a conical groove (23) passing through the first ring body (20) axial The extended circular hole (25) communicates the conical groove (23) with the circular groove (24). The chip removing device for a drilling tool according to claim 6, wherein the diameter of the circular hole (25) is smaller than the diameter of the inner side of the circular groove (24). The chip removing device for a drilling tool according to claim 4, wherein the through hole (34) has a diameter larger than a diameter of an outer circumferential surface of the first ring body (20), and penetrates the second ring body ( 30) The top surface (31) to the bottom surface (32). The chip removing device for a drilling tool according to claim 8, wherein the bottom surface (32) of the second ring body (30) forms a ring groove (33), and the ring groove (33) is in the through hole. (34) The periphery is a concentric structure.