Efficient counter bit with three square handles

Abstract

The utility model discloses an efficient counter bit with a trilateral handle. The efficient counter bit comprises a bit and a handle body, one end of the handle body is connected with a drill bit, a chip groove is formed in the drill bit, a cutting edge is arranged on one side of the chip groove and located on the edge of the groove wall of one side of the chip groove, and the drill bit comprises a guide part, a shaping part and a transition part; the guide part is conical, one side of the shaping part is connected with the bottom end of the guide part, the other end of the shaping part is connected with the transition part, and the handle body is connected with one end of the transition part. Abrasion to the drill bit is reduced, after the drill bit is damaged, the drill bit can be taken down from the connecting sleeve and replaced, and the punching cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing cutter technical field, especially a kind of three-party handle high-efficiency button drill. BACKGROUND

[0002] Button drill is the tool for orifice finishing. It does not drill new hole, and is born for cutting out countersunk head seat, plane or chamfer at the end of existing hole. Its function is to make screw, bolt head or washer can be embedded flat, realize component surface smooth and flat, and avoid interference. In prior art, drill bit is worn during button drill processing process, and cannot be replaced after drill bit is worn, so button drill needs to be replaced, which affects the punching efficiency of button drill and leads to high punching cost. SUMMARY

[0003] According to the utility model embodiments, a kind of three-party handle high-efficiency button drill is provided, comprising: drill bit and handle body;

[0004] One end of the handle body is connected to the drill bit, a chip removal groove is formed in the drill bit, a cutting edge is arranged on one side of the chip removal groove, and the cutting edge is located on the edge of the groove wall on one side of the chip removal groove.

[0005] One side of the drill bit is provided with a connecting sleeve, the connecting sleeve is provided with an internal thread, a sliding sleeve is arranged in the handle body, the sliding sleeve slides in the handle body, one end of the sliding sleeve is threadedly connected to the connecting sleeve, the other end of the sliding sleeve is connected to a liquid inlet pipe, a liquid storage cavity is arranged in the handle body, one end of the liquid inlet pipe extends into the liquid storage cavity and slides on the side wall of the liquid storage cavity, a liquid inlet is formed in the side wall of the liquid inlet pipe, a cooling pipe is arranged in the drill bit, one end of the cooling pipe is communicated with the liquid inlet pipe, and the other end of the cooling pipe is located at the chip removal groove.

[0006] Further, a sliding block is arranged on the side wall of the sliding sleeve, a strip-shaped hole is formed in the handle body, the strip-shaped hole is arranged corresponding to the sliding block, and the sliding block slides in the strip-shaped hole.

[0007] Further, a return spring is arranged on the liquid inlet pipe, and the return spring is located between the sliding sleeve and the liquid storage cavity.

[0008] Further, two sealing rings are arranged on the liquid inlet pipe, and the two sealing rings are arranged outside the liquid inlet pipe and located on both sides of the liquid inlet.

[0009] Further, the drill bit comprises a guide portion, a shaping portion and a transition portion.

[0010] The guide portion is conical, one side of the shaping portion is connected to the bottom end of the guide portion, the other end of the shaping portion is connected to the transition portion, and the handle body is connected to one end of the transition portion.

[0011] Further, the taper angle of the guide portion is 60°-120°.

[0012] Further, the transition part is frustum-shaped, the large-diameter end of the transition part is connected with the shaping part, and the side angle of the transition part is 120°.

[0013] Further, the chip flute is extended from the top end of the guide part to the transition part.

[0014] Further, three chip flutes are arranged on the drill bit, and the three chip flutes are arranged in a circle with the axis of the drill bit as the center.

[0015] Further, the three chip flutes are divided into a first chip flute, a second chip flute and a third chip flute, the angle between the first chip flute and the second chip flute is 100°-110°, and the angle between the second chip flute and the third chip flute is 110°-120°.

[0016] According to the three-side handle efficient counterbore drill, the front end of the drill bit is positioned on the material to be processed in the drilling process, the drill bit pushes the sliding sleeve to slide on the handle, the liquid inlet pipe is communicated with the liquid storage cavity, the lubricating oil in the liquid storage cavity enters the liquid inlet pipe, the lubricating oil flows to the chip flute through the cooling pipe, the drill bit is lubricated and cooled, the wear of the drill bit is reduced, and the drill bit can be taken off from the connecting sleeve by rotating the drill bit after the drill bit is damaged, the drill bit can be replaced, and the drilling cost is reduced.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural diagram of a three-side handle efficient counterbore drill according to an embodiment of the present application;

[0019] Figure 2 FIG. 3 is an internal structure diagram of a three-side handle efficient counterbore drill according to an embodiment of the present application;

[0020] Figure 3 FIG. 5 is a side view of another three-side handle efficient counterbore drill according to an embodiment of the present application;

[0021] Figure 4 FIG. 5 is a side view of another three-side handle efficient counterbore drill according to an embodiment of the present application;

[0022] Figure 5 FIG. 7 is a cutting edge sectional view of a three-side handle efficient counterbore drill according to an embodiment of the present application.

[0023] The reference numerals in the figure are as follows: 1 is the drill bit, 11 is the guide section, 12 is the shaping section, 13 is the transition section, 14 is the chip removal groove, 15 is the cutting edge, 2 is the shank, 21 is the slot, 3 is the connecting sleeve, 4 is the sliding sleeve, 41 is the slider, 5 is the liquid inlet pipe, 6 is the liquid storage chamber, and 7 is the return spring. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0025] First, combine Figures 1-5 This invention describes a three-shank high-efficiency countersink drill according to an embodiment of the present invention, used to cut countersunk heads, flat surfaces, or chamfers at the ends of existing holes.

[0026] like Figures 1-5 As shown, a three-sided shank high-efficiency countersink drill according to an embodiment of the present invention includes: a drill bit 1 and a shank 2;

[0027] One end of the shank 2 is connected to the drill bit 1. The drill bit 1 has a chip removal groove 14. A cutting edge 15 is provided on one side of the chip removal groove 14. The cutting edge 15 is located at the edge of the groove wall on one side of the chip removal groove 14.

[0028] The drill bit 1 has a connecting sleeve 3 on one side, the connecting sleeve 3 has an internal thread, the shank body 2 has a sliding sleeve 4 inside, the sliding sleeve 4 slides inside the shank body, one end of the sliding sleeve 4 is threaded to the connecting sleeve 3, and the other end is connected to the liquid inlet pipe 5, the shank body 2 has a liquid storage chamber 6, one end of the liquid inlet pipe 5 extends into the liquid storage chamber 6 and slides on the side wall of the liquid storage chamber 6, and a liquid inlet is opened on the side wall of the liquid inlet pipe 5, the drill bit 1 has a cooling pipe inside, one end of the cooling pipe is connected to the liquid inlet pipe 5, and the other end is located at the chip removal groove.

[0029] During the drilling process, the front end of the drill bit 1 is positioned on the material to be processed. The drill bit pushes the sliding sleeve 4 to slide on the shank 2, so that the liquid inlet pipe 5 is connected to the liquid storage chamber 6. The lubricating oil in the liquid storage chamber 6 enters the liquid inlet pipe 5 and flows to the chip removal groove 14 through the cooling pipe, thereby lubricating and cooling the drill bit 1 and reducing the wear on the drill bit 1. If the drill bit 1 is damaged, it can be removed from the connecting sleeve 3 by rotating the drill bit 1, and then the drill bit 1 can be replaced, thus reducing the drilling cost.

[0030] like Figure 2 As shown, the sliding sleeve 4 has a slider 41 on its side wall and a strip hole on its handle. The strip hole corresponds to the slider 41, and the slider 41 slides in the strip hole.

[0031] A reset spring 7 is fitted onto the liquid inlet pipe 5, and the reset spring 7 is located between the sliding sleeve 4 and the liquid storage chamber 6.

[0032] The liquid inlet pipe 5 is provided with two sealing rings, and the two sealing rings are arranged outside the liquid inlet pipe 5 and located on both sides of the liquid inlet.

[0033] In the embodiment, the sliding of the sliding block 41 in the strip-shaped hole is limited, so that the distance of the one end of the drill bit is limited, and the liquid inlet pipe 5 stops moving after being communicated with the liquid storage cavity 6. The drill bit can be reset by the reset spring 7, so that the communication between the liquid inlet pipe and the liquid storage cavity 6 is disconnected. The sealing ring can avoid the phenomenon of liquid leakage.

[0034] The drill bit 1 comprises a guide part 11, a shaping part 12 and a transition part 13.

[0035] The guide part 11 is conical, one end of the shaping part 12 is connected with the bottom end of the guide part 11, and the other end is connected with the transition part 13, and one end of the shank 2 is connected with the transition part 13.

[0036] In the application, the drill bit 1 is aligned with the existing hole end, the front end of the guide part 11 is inserted into the opening of the hole, the hole is coaxial with the drill bit 1, the drill bit 1 is driven to rotate by the shank 2, the cutting edge 15 cuts the hole opening, the cutting generated debris is discharged through the chip groove 14, the conical frustum-shaped front end is inserted into the hole opening, the vibration and noise generated in the machining process are reduced, the obvious vibration lines on the machined surface are avoided, and the machining quality is ensured.

[0037] As shown in the figure, Figure 1 The side angle of the guide part 11 is 60°-120°. The shaping part 12 is cylindrical, the transition part 13 is conical frustum-shaped, and the large diameter end of the transition part 13 is connected with the shaping part 12. The side angle of the transition part 13 is 120°.

[0038] In the embodiment, the guide part 11 with a 90° angle can insert the front end of the guide part 11 into the hole, guide the cutting position of the swaging drill, and ensure the accuracy of the swaging drill cutting position.

[0039] As shown in the figure, Figures 1-5 The chip groove 14 extends from the top end of the guide part 11 to the transition part 13. Three chip grooves 14 are arranged on the drill bit 1, and the three chip grooves 14 are arranged in a circle with the axis of the drill bit 1 as the center. The three chip grooves 14 are divided into a first chip groove, a second chip groove and a third chip groove, the angle between the first chip groove and the second chip groove is 100°-110°, and the angle between the second chip groove and the third chip groove is 110°-120°. The cutting edge 15 is located on the groove wall in the clockwise direction of the chip groove 14, and the included angle between the groove wall and the vertical surface is -21°--15°.

[0040] As shown in the figure, Figure 5As shown, in the embodiment, the cutting edge 15 is protruding by setting the slot wall and the vertical plane to be -21°~ -15°, so as to facilitate the cutting edge 15 to cut the orifice.

[0041] The shank 2 is provided with a clamping groove 21.

[0042] The above, with reference to Figures 1-5 The drill bit is used for drilling, and the drill bit 1 is arranged on the shank 2, the front end of the drill bit 1 is arranged on the material to be processed, the sliding sleeve 4 is arranged on the shank 2, the liquid inlet pipe 5 is communicated with the liquid storage cavity 6, the lubricating oil in the liquid storage cavity 6 is arranged in the liquid inlet pipe 5, the lubricating oil is arranged in the cooling pipe and flows to the chip groove 14, the drill bit 1 is lubricated and cooled, the wear of the drill bit 1 is reduced, the drill bit 1 is taken off from the connecting sleeve 3 by rotating the drill bit 1, the drill bit 1 is replaced, and the drilling cost is reduced.

[0043] It should be noted that in this specification, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles or devices. Without more limitations, the elements defined by the statement "comprising" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] Although the content of the present application has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present application. After reading the above content, various modifications and alternatives of the present application will be obvious to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. A three-handled high-efficiency gun-drill, characterized by, The utility model provides a drill bit and handle body, and the drill bit is connected to one end of the handle body, and the drill bit is provided with a chip flute on the side, and the chip flute is provided with a cutting edge on one side of the groove wall edge. The drill bit is provided with a connecting sleeve on one side, and the connecting sleeve is provided with an internal thread. The handle body is provided with a sliding sleeve inside, and the sliding sleeve slides in the handle body. The sliding sleeve is provided with a sliding block on the side wall, and the handle body is provided with a strip-shaped hole.

2. The tri-lateral shank high performance socket screw of claim 1 wherein, The sliding block slides in the strip-shaped hole.

3. The tri-lateral shank high performance socket screw of claim 1 wherein, The sliding block is provided with a reset spring on the liquid inlet pipe.

4. The tri-lateral shank high performance socket screw of claim 1 wherein, The liquid inlet pipe is provided with two sealing rings.

5. The tri-lateral shank high performance socket screw of claim 1 wherein, The drill bit comprises a guide part, a shaping part and a transition part. The guide part is conical, and the shaping part is connected to the bottom end of the guide part on one side and connected to the transition part on the other end.

6. The tri-lateral shank high performance socket screw of claim 5 wherein, The handle body is connected to one end of the transition part.

7. The triangle shank high performance socket screw of claim 5, wherein The cone angle of the guide part is 60-120 degrees.

8. The tri-lateral shank high performance socket screw of claim 1 wherein, The transition part is frustoconical, and the large diameter end of the transition part is connected to the shaping part.

9. The tri-lateral shank high performance socket screw of claim 1 wherein, The side angle of the transition part is 120 degrees.

10. The tri-lateral shank high performance socket screw of claim 9 wherein, The chip flute is extended from the top end of the guide part to the transition part. The drill bit is provided with three chip flutes, and the three chip flutes are arranged in a circle around the axis of the drill bit. The three chip flutes are divided into a first chip flute, a second chip flute and a third chip flute. The angle between the first chip flute and the second chip flute is 100-110 degrees, and the angle between the second chip flute and the third chip flute is 110-120 degrees.

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