TWM560354U - Thread-chamfering device - Google Patents

Abstract

The utility model relates to a screw chamfering device, which comprises a connecting rod body and a chamfering portion. The chamfering portion comprises a body, a chamfering groove, a receiving groove, a chip removing hole and at least one a cutting portion; the body is connected to the shaft portion; the chamfer groove is recessed at a different end portion of the body and the rod portion; the receiving groove is recessed at the bottom of the chamfering groove, and the cross-sectional area and shape of the receiving groove The same as the chamfered groove; the chip evacuation hole penetrates the body and communicates with the chamfer groove; the cutting portion is formed on the wall surface of the chamfer groove; the creation of the screw end is made by adding a new receiving groove in the chamfer groove After being cut, the part can enter the accommodating groove, so that the rear thread on the screw can move forward and be cut by the cutting part.

Description

Screw chamfer

This creation is a screw chamfering device.

The screw chamfer is a tool for repairing the cracked thread on the end of the screw. The principle is that the end of the screw is the most vulnerable part, and when the screw is hit by an external force due to various factors, etc. When the end is damaged, the user can mold the damaged thread at the end through the screw chamfer and make the end a chamfered but smooth end, thereby making the screw Can continue to use.

In the prior art, the screw chamfering device cuts the end of the screw with a tapered concave surface, and the tapered concave surface is provided with a plurality of blades, so when the screw chamfer is activated and rotated, the blade The screw is further rotated, whereby the rotating blade can cut the thread of the peripheral edge of the screw end when the end of the screw is close to and in contact with the tapered concave surface.

However, when the damaged surface of the screw does not occur at the end, but is slightly away from the end, when the screw is placed on the conical concave surface, it is likely that it has not been cut before the damaged area. The end of the screw is pushed to the deepest point of the concave surface, so that the screw can not be cut to the position where it is to be cut, so the prior art screw chamfer has its defects in use.

In view of the shortcomings and deficiencies of the prior art, the present invention provides a screw chamfer which is further recessed at a bottom end of a tapered chamfer groove to form a receiving groove, so that the cut screw end can continue forward. Move to the accommodating groove so that the rear portion of the screw can move forward and be cut by the screw chamfering device.

For the purpose of the above-mentioned creation, the technical means adopted by the present invention is a screw chamfering device comprising a rod body, the opposite ends of which are respectively a chamfered joint end and an electric drill joint end; a chamfer The portion is fixed to the chamfered joint end of the rod body, the chamfered portion further comprising a body, one end of which is fixed to the joint end of the chamfered portion of the rod body; a chamfered groove, The utility model is a tapered tank body, and is concavely formed on the body, and the chamfering groove and the rod body are respectively disposed at opposite ends of the body; a receiving groove is concavely formed on the body a bottom end of the corner groove, the cross-sectional area and shape of the accommodating groove are respectively the same as the cross-sectional area and shape of the bottom end of the chamfer groove; a chip hole penetrated through the wall surface of the body, and the chamfer The at least one cutting portion is formed in the chamfered groove, and the two ends thereof extend to a top end edge of the chamfer groove and a portion where the chamfer groove meets the accommodating groove.

The advantage of the present invention is that the chamfer groove of the general screw chamfering device is a cone bottom surface. The creation further recesses a receiving groove at the bottom of the chamfering groove, and the receiving groove is straightly inward. The recessed portion and the cross-sectional area and shape of the accommodating groove are respectively the same as the cross-sectional area and shape of the bottom end of the chamfered groove, so that the cut end portion can be continuously advanced into the accommodating groove, in other words, the whole screw is The movement can be continued toward the chamfering device so that the position on the screw that is farther from the end can be cut by the cutting portion.

Further, in the foregoing thread chamfering device, the two ends of the chip removing hole extend through the chamfering groove and extend to opposite sides of the body, and the top and bottom of the chip discharging hole respectively extend to the chamfering The top edge of the groove and the receiving groove.

Further, in the foregoing thread chamfering device, the at least one cutting portion is formed at an edge of the chamfered groove that meets the chip removing hole.

Further, in the screw chamfering device, the bottom surface of the receiving groove is recessed with a circular arc groove.

Further, in the aforementioned thread chamfering device, the at least one cutting portion is integrally formed with the chamfer groove.

The technical means adopted by the present invention for achieving the intended purpose of creation are further explained below in conjunction with the drawings and the preferred embodiment of the present invention.

Referring to FIG. 1 and FIG. 2, the standard chamfered chamfering chamfer of the present invention comprises a rod body 10 and a chamfered portion 20, and the rod portion 10 and the chamfered portion 20 are connected to each other.

Further, the opposite ends of the rod body 10 are respectively a chamfered joint end 11 and an electric drill joint end 12 . In the first embodiment, in order to cooperate with the joint arrangement of the general electric drill 91 , the electric drill joint end 12 is A hexagonal column structure, but not limited to this, the user can adjust according to his needs.

The chamfered portion 20 is fixed to the chamfered portion joint end 11 of the shaft portion 10. In the first embodiment, the chamfered portion 20 is integrally formed with the shaft portion 10, but not limited thereto. Can be combined with each other in other ways.

The chamfered portion 20 includes a body 21, a chamfered groove 22, a receiving groove 23, a chip evacuation hole 24, at least one cutting portion 25, and a circular arc groove 26.

One end of the body 21 and the chamfered joint end 11 of the shaft portion 10 are fixed to each other, and the other end is recessed with a chamfered groove 22, in other words, the chamfered groove 22 is recessed on the body 21, and is tied to the rod The body portions 10 are respectively disposed at opposite ends of the body 21.

The receiving groove 23 is concavely formed at the bottom end of the chamfer groove 22, and the cross-sectional area and shape of the receiving groove 23 are respectively the same as the cross-sectional area and shape of the chamfer groove 22, more precisely, as shown in FIG. When viewed from the bottom, the size and shape of the cross-sectional area of the accommodating groove 23 are the same as the cross-sectional area and shape of the chamfered groove 22, and please refer to FIG. 1 further, the accommodating groove 23 is viewed from the side. The starting recess is recessed straight toward the rod body 10, and a circular arc groove 26 is directly formed at the end of the recess. However, the arc groove 26 is not included in the present invention.

The chip evacuation hole 24 is formed on the wall surface of the body 21 and communicates with the chamfer groove 22. In the first embodiment, the chip evacuation hole 24 penetrates the side wall surface of one side of the body 21 and communicates with the chamfer groove 22. .

In the first embodiment, the number of the at least one cutting portion 25 is one, and the cutting portion is formed in the chamfer groove 22, and the two ends thereof respectively extend to the top end edge of the chamfer groove 22 and the chamfer groove 22 and Where the receiving slots 23 meet.

The following is a second embodiment of the present invention. The second embodiment is substantially the same as the first embodiment, but the second embodiment has the following features and is a preferred embodiment.

In the second embodiment, both ends of the chip evacuation hole 24A extend through the chamfered groove 22A and extend to opposite ends of the body 21A, respectively, so that the chip evacuation hole 24 of the first embodiment only penetrates the body 21 laterally. In one of the walls, the chip evacuation holes 24A of the second embodiment are laterally communicated to the opposite side wall faces of the body 21A; further, in the second embodiment, the top of the chip evacuation holes 24A extends to the top periphery of the chamfered groove 22A. The bottom of the body extends to the accommodating groove 23A. In other words, the chip removing hole 24A of the second embodiment sequentially passes through one of the wall surfaces of the body 21A through the chamfering groove 22A, the accommodating groove 23A, and penetrates to the other end of the body 21A. The wall.

In the second embodiment, the number of the at least one cutting portion 25A is two, and the two cutting portions 25A are fitted to the chip removing holes 24A of the penetrating body 21A to be formed in the chamfering groove 22A and the chip removing hole 24A. The two edges that are in contact, more precisely, in the second embodiment, the chamfered groove 22A penetrates the chamfered groove 22A, so that the chamfered groove 22A is divided into two by the chip removing hole 24A, and the two cutting portions 25A is formed in the two contour lines in which the two halves of the chamfered groove 22A are separated from the chip discharge holes 24A. Further, in the second embodiment, the two cutting portions 25A are integrally formed in the inverted shape. The two edges of the corner groove 22A, but not limited thereto, the two cutting portions 25A may be additionally mounted on the two edges.

The following are the use aspects of the creation and its advantages.

Please refer to FIG. 1 , FIG. 3 and FIG. 6 . In this application, the electric drill 91 is first connected to the electric drill 91. Since the creation can be used only with the general electric drill 91, the utility is practical. good.

After the present invention is installed on the electric drill 91, the electric drill 91 is activated, and the creation can be rotated by the driving of the electric drill 91, and when the user closes the damaged screw 92 to the chamfered groove 22 of the creation. When the screw 92 gradually comes into contact with the wall surface of the chamfered groove 22, the cutting portion 25 which is rotated at a high speed and is disposed on the wall surface of the chamfered groove 22 gradually cuts the screw 92 from the end portion, and the end portion of the screw 92 is damaged. The thread 93 is removed and the screw 92 can be reused.

More importantly, when the end of the screw 92 is cut, it can enter the accommodating groove 23 forward, so that the damaged screw 93 located behind the screw 92 can be moved forward, thereby causing it to be subjected to Cutting of the cutting portion 25.

In the preferred second embodiment, since both ends of the cutting portion 25A penetrate the body 21A, the second embodiment can more efficiently cut the chips from the screw 92 as compared with the first embodiment. In addition, the user can also make the cutting portion 25A polish the end portion of the screw 92 more smoothly by rotating the electric drill 91 during the cutting process.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present invention, and is not in any technical field. A person skilled in the art can make a few changes or modifications as equivalent embodiments of the technical content disclosed above without departing from the scope of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the present technical solution.

10‧‧‧ Rod body
11‧‧‧Chamfered joint end
12‧‧‧Electric drill joint
20‧‧‧Chamfering
21‧‧‧ body
22‧‧‧Chamfered groove
23‧‧‧ accommodating slots
24‧‧‧chip hole
25‧‧‧cutting department
26‧‧‧Arc groove
91‧‧‧Electric drill
92‧‧‧ screw
93‧‧‧ threaded teeth
21A‧‧‧ Ontology
22A‧‧‧Chamfered groove
23A‧‧‧ accommodating slots
24A‧‧‧chip hole
25A‧‧‧Cutting Department
26A‧‧‧Arc groove

Figure 1 is a side elevational view of a first embodiment of the present creation. Figure 2 is a bottom plan view of the first embodiment of the present creation. Figure 3 is a perspective view of the second embodiment of the present creation. Figure 4 is a cross-sectional side view of a second embodiment of the present invention. Figure 5 is a bottom plan view of a second embodiment of the present creation. Figure 6 is a side elevational view of the second embodiment of the present invention when it is coupled to an electric drill. Fig. 7 is a schematic view showing the cutting of a screw in the second embodiment of the present invention. Fig. 8 is another schematic view showing the cutting of a screw in the second embodiment of the present invention. Fig. 9 is another schematic view showing the cutting of a screw in the second embodiment of the present invention.

Claims (5)

A thread chamfering device comprising a rod body, the opposite ends of which are respectively a chamfered joint end and an electric drill joint end; a chamfered portion fixed to the chamfered portion of the rod body The engaging end, the chamfering portion further includes a body, one end of which is fixed to the engaging end of the chamfered portion of the rod body; a chamfering groove which is a tapered groove body and is concavely formed therein On the body, the chamfered groove and the rod body are respectively disposed at opposite ends of the body; a receiving groove is concavely formed at the bottom end of the chamfering groove, and the cross-sectional area and shape of the receiving groove The cross-sectional area and shape of the bottom end of the chamfered groove are respectively the same; a chip hole is formed through the wall surface of the body and communicates with the chamfer groove; at least one cutting portion, the at least one cutting portion is formed In the chamfered groove, the two ends of the chamfering groove extend to the top end of the chamfering groove and the chamfering groove and the receiving groove. The thread chamfering device of claim 1, wherein both ends of the chip evacuation hole extend through the chamfered groove and extend to opposite sides of the body, and the top and bottom of the chip evacuation hole respectively extend to the inverted The top edge of the corner groove and the receiving groove. The thread chamfering device of claim 1 or 2, wherein the at least one cutting portion is formed at an edge of the chamfered groove that meets the chip evacuation hole. The thread chamfering device according to claim 1 or 2, wherein the bottom surface of the receiving groove is recessed with a circular arc groove. A thread chamfer according to claim 1 or 2, wherein the at least one cutting portion is integrally formed with the chamfer groove.