JP2001287173A - Aid for removal of remainder of cut screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the screw remainder easily from a screw hole when a screw threaded into the screw hole is cut off to leave a headless screw shank portion threaded in the screw hole. SOLUTION: This aid for the removal of the remainder of a cut screw has a recess 3 at one end 1a of an assist body 1, a guiding through hole 5 extending from the recess 3 to the other end 1b of the assist body in a direction perpendicular to the end face of the assist body at the one end, and an adhesive layer 7 about the recess at the one end of the assist body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for removing a remaining portion of a cut screw, and
When the screw screwed into the screw hole is cut and the shaft portion of the screw having no head remains screwed into the screw hole, an auxiliary used to remove the remaining portion of the screw from the screw hole. It is related to the tool. The term "screw" in the present specification including the claims means a screw formed on a round bar, regardless of the diameter. Accordingly, "screw" in the present specification including the claims includes bolts.

[0002]

2. Description of the Related Art When a screw screwed into a screw hole is cut and the shaft of the screw having no head remains screwed into the screw hole, the remaining portion of the screw is removed from the screw hole. In this case, a method is generally employed in which the center of the remaining portion is pierced by a drill, and the remaining portion is dug out by a suitable tool along the center hole.

[0003]

However, it is difficult to drill the remaining portion of the screw along the center line thereof with a drill, and the drill easily escapes from the center of the remaining portion. If the hole formed in the remaining portion of the screw is off the center of the remaining portion, it will hinder the work of excavating the remaining portion with a tool. The present invention has been made to solve such a problem and to make it possible to easily remove the remaining portion of the cut screw.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides an auxiliary tool for removing a remaining portion of a cut screw as described below.

(1) A concave portion is formed at one end of the main body of the auxiliary tool,
A guide through hole extending from the recess to the other end of the assisting device main body is formed in a direction orthogonal to the end face of the one side of the assisting device body, and an adhesive layer is provided around the recess at the one end of the assisting device body, Insert the rod-shaped body into the guide through hole of the assisting tool main body, and align the tip of the rod-shaped body with the center of the cut end in the remaining portion of the screw, and screw the screw hole into which the remaining portion is screwed. An adhesive layer is adhered around the screw hole on the surface of the provided support, the rod is pulled out from the guide through hole of the auxiliary tool main body, and then the drill is inserted into the guide through hole of the auxiliary tool main body,
A tool for removing a remaining portion of a cut screw, wherein a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill (claim 1).

(2) A convex portion is formed at one end of the auxiliary tool main body,
A guide through-hole extending from the projection to the other end of the assisting device main body is formed in a direction orthogonal to the end face of the assisting device main body at the one end side, and an adhesive layer is provided around the protrusion at the one end of the assisting device main body. A rod is inserted into the guide through hole of the assisting device body, and the protrusion of the assisting device body is screwed into the remaining portion of the screw with the tip of the rod being aligned with the center of the cut end of the remaining portion of the screw. The auxiliary tool main body is adhered to the periphery of the screw hole on the surface of the support provided with the screw hole with an adhesive layer, and the rod is pulled out from the guide through hole of the auxiliary tool main body.
Subsequently, a drill is inserted into the guide through-hole of the auxiliary tool body, and a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill. A residual part removal aid (Claim 2).

(3) A recess is formed at one end of the assisting device main body, and a guide through hole extending from the recess to the other end of the assisting device main body is formed in a direction perpendicular to the one end side end surface of the assisting device main body. A magnet is attached around the concave portion at the one end of the tool body, a rod is inserted into the guide through hole of the auxiliary tool body, and the tip of the rod is aligned with the center of the cut end in the remaining portion of the screw. The auxiliary tool main body is attracted by a magnet around the screw hole on the surface of the support provided with the screw hole into which the remaining portion is screwed, and the rod is pulled out from the guide through hole of the auxiliary tool main body. Inserting a drill into the guide through hole of the auxiliary tool main body, and drilling a central hole for excavating the remaining portion of the screw by the drill;
A tool for removing a remaining portion of a cut screw (claim 3).

(4) A projecting portion is formed at one end of the auxiliary tool main body,
A guide through-hole extending from the protrusion to the other end of the assisting device main body is formed in a direction orthogonal to the end face of the assisting device main body at the one end side, and a magnet is attached around the protrusion at the one end of the assisting device main body. The rod-shaped body is inserted into the guide through hole of the auxiliary tool main body, and the protrusion of the auxiliary tool main body is screwed into the remaining part of the screw with the tip of the rod-shaped body being aligned with the center of the cut end of the remaining part of the screw. The auxiliary tool main body is attracted by a magnet around the screw hole on the surface of the support provided with the screw hole, and the rod is pulled out from the guide through hole of the auxiliary tool main body.
Subsequently, a drill is inserted into the guide through-hole of the auxiliary tool body, and a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill. A residual part removal aid (Claim 4).

(5) A concave portion is formed at one end of the auxiliary tool main body,
The recess is provided with a female screw corresponding to the external thread of the remaining portion of the screw, a guide hole is formed from the recess to the other end of the auxiliary tool main body, and the center line of the guide hole is defined as the center line of the recess. The recess of the auxiliary tool main body is screwed into a portion of the remaining portion of the screw that protrudes from the screw hole, a drill is inserted into the guide through hole of the auxiliary tool main body, and the drill is inserted into the remaining portion of the screw by the drill. A tool for removing a remaining portion of a cut screw, wherein a center hole for excavating the remaining portion is formed.

(6) A projecting portion is formed at one end of the auxiliary tool main body,
The convex portion is provided with a male screw corresponding to a female screw of a screw hole into which the remaining portion of the screw is screwed, and a guide through hole extending from the convex portion to the other end of the assisting device main body is formed. The center line of the through hole is aligned with the center line of the projection, and the projection of the auxiliary tool body is screwed into the screw hole into which the remaining portion of the screw is screwed, and the drill is inserted into the guide hole of the auxiliary tool body. A tool for removing a remaining portion of a cut screw (Claim 6), wherein a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill.

(7) A screw member is screwed into the female screw cylinder so as to be able to advance and retreat, and a guide through hole is formed in the male screw member so as to pass through the center of the male screw member in the longitudinal direction of the male screw member. The female screw in the female screw cylinder corresponds to the male screw in the remaining portion of the screw, and the male screw in the male screw member corresponds to the female screw in the screw hole in which the remaining portion of the screw is screwed. A screw cylinder is screwed into a portion of the remaining portion of the screw that protrudes from the screw hole, or a male screw member is screwed into a screw hole into which the remaining portion of the screw is screwed, and the drill is inserted into the guide through hole of the male screw member. And a central hole for excavating the remaining portion of the screw by the drill is provided.
A tool for removing a remaining portion of a cut screw (claim 7).

[0012]

According to the first aspect of the present invention, there is provided a tool for removing a remaining portion of a cut screw according to the first aspect of the present invention.
It is mainly used when the cut end of the remaining portion of the cut screw protrudes from the screw hole (see FIG. 1), but can also be used when the cut end is immersed in the screw hole. .

The guide through-hole penetrates the assisting tool body in a direction perpendicular to the end face of the one end side of the assisting tool body, and a rod is inserted into the guide through-hole, and the tip of the rod is screwed with a screw. The main body of the assisting tool is adhered to the periphery of the screw hole on the surface of the support provided with the screw hole to which the remaining portion is screwed, while being aligned with the center of the cut end of the portion (see FIG. 1). (See FIG. 2), the center line of the guide through hole in the main body of the auxiliary tool coincides with the center line of the remaining portion of the screw. Therefore, after the rod is pulled out from the guide through hole, the drill is inserted into the guide through hole of the auxiliary tool main body, and when the remaining portion of the screw is drilled by the drill, the drill is guided by the guide through hole of the auxiliary tool main body. The remaining part of the screw is dug exactly along its center line (see FIG. 2). That is, a center hole is formed in the remaining portion of the screw along the center line. The remaining portion of the screw is dug out by a suitable tool along the center hole thus formed.

According to a second aspect of the present invention, there is provided a tool for removing a remaining portion of a cut screw, wherein a cut end of the remaining portion of the cut screw is immersed in a screw hole. Used when

According to a second aspect of the present invention, there is provided an auxiliary tool for removing a remaining portion of a cut screw, wherein a convex portion is formed at one end of the main body of the auxiliary device in place of the concave portion according to the first aspect. Although it is made to fit into the screw hole where the part is screwed,
In other respects, it functions similarly to the assisting device for removing the remaining portion of the cut screw of the first aspect. See FIGS.

[0016] The assisting device for removing the remaining portion of the cut screw according to the third aspect of the present invention includes the screw hole into which the remaining portion of the screw is screwed. It is used when the support is made of iron or the like adsorbed by a magnet. According to a third aspect of the present invention, there is provided an auxiliary tool for removing a remaining portion of a cut screw, wherein a magnet is attached around the recess at one end of the auxiliary tool body instead of the adhesive layer according to the first aspect, and a screw hole is provided by the magnet. Except for adsorbing the support that has been removed, it has the same function as the assisting device for removing a remaining portion of a cut screw according to claim 1.

The assisting device for removing the remaining portion of the cut screw according to the fourth aspect of the present invention has the screw hole into which the remaining portion of the screw is screwed. It is used when the support is made of iron or the like adsorbed by a magnet. An auxiliary tool for removing a remaining portion of a cut screw according to a fourth aspect of the present invention is obtained by attaching a magnet in place of the adhesive layer of the second aspect around a convex portion at one end of the main body of the auxiliary tool, and the screw hole is formed by the magnet. Except for adsorbing the provided support, it has the same function as the assisting device for removing the remaining portion of the cut screw according to claim 2.

[0018] The assisting device for removing the remaining portion of the cut screw according to the fifth aspect of the present invention is a tool for removing the remaining portion of the cut screw, wherein the cut end of the remaining portion of the cut screw protrudes from the screw hole. Used when

The guide hole penetrates the auxiliary tool body. Since the center line of the guide through hole coincides with the center line of the concave portion, when the concave portion of the auxiliary tool main body is screwed into the portion of the remaining portion of the screw projecting from the screw hole, the guide through hole in the auxiliary tool main body is provided. Center line coincides with the center line in the remaining portion of the screw. See FIG. Therefore, when the drill is inserted into the guide through-hole of the auxiliary tool main body and the remaining part of the screw is drilled by the drill, the drill is guided by the guide through-hole of the auxiliary tool main body and moves the remaining part of the screw along the center line thereof. Dig exactly. That is, a center hole is formed in the remaining portion of the screw along the center line. The remaining portion of the screw is dug out by a suitable tool along the center hole thus formed.

[0020] The assisting device for removing the remaining portion of the cut screw according to claim 6 is a tool for removing the remaining portion of the cut screw, the cut end of the remaining portion of the cut screw being immersed in the screw hole. Used when

According to a sixth aspect of the present invention, there is provided an auxiliary tool for removing a remaining portion of a cut screw, wherein a protruding portion is formed at one end of the main body of the auxiliary tool in place of the concave portion according to the fifth aspect. A male screw corresponding to the female screw of the screwed screw hole is provided, and the convex portion is screwed to the screw hole to which the remaining portion of the screw is screwed. In the above point, the same function as that of the assisting device for removing the remaining portion of the cut screw according to the fifth aspect is obtained. See FIG.

[Auxiliary Tool for Removing Remaining Part of Cut Screw] According to the seventh aspect of the present invention, the cutting end of the remaining part of the cut screw protrudes from the screw hole. It can be used equally when the cut end is immersed in the screw hole.

When the cut end of the remaining portion of the cut screw protrudes from the screw hole (see FIG. 10), the male screw member is appropriately advanced and retracted with respect to the female screw member, and the female screw cylinder is moved to the remaining portion of the screw. Screwed into the part protruding from the screw hole in. When the cut end of the screw is immersed in the screw hole (see FIG. 11), the male screw member is appropriately advanced and retracted with respect to the female screw member, and the male screw member is screwed with the remaining portion of the screw. Screw. Since the guide through hole passes through the center of the male screw member in the longitudinal direction of the male screw member, the female screw cylinder is screwed into a portion of the remaining portion of the screw that protrudes from the screw hole, or the male screw member is screwed into the screw. When the remaining portion is screwed into the screw hole into which the remaining portion is screwed, the center line of the guide through hole coincides with the center line of the remaining portion of the screw. Therefore, when the drill is inserted into the guide through hole and the remaining portion of the screw is drilled by the drill, the drill is guided by the guide through hole and dug the remaining portion of the screw exactly along its center line. That is, a center hole is formed in the remaining portion of the screw along the center line. The remaining portion of the screw is dug out by a suitable tool along the center hole thus formed.

[0024]

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

First, the case shown in FIGS. 1 to 4 will be described. The reference numeral 1 indicates an auxiliary tool main body. A recess 3 is formed at one end 1a of the assisting device body 1. A guide through-hole 5 is formed from the recess 3 to the other end 1b of the assisting device body 1, and an adhesive layer 7 is provided around the recess 3 at the one end 1a of the assisting device body 1. The guide through hole 5 is provided at the one end 1a of the assisting device body 1.
It is formed in a direction perpendicular to the side end surface 1a '. The adhesive layer 7 is, for example, a concave portion 3 at the one end 1a of the assisting device body
It is formed by attaching a double-sided adhesive tape around the periphery.

Instead of the adhesive layer 7, a magnet 7 'may be attached to the periphery of the concave portion 3 at the one end 1a of the auxiliary tool body 1.

For example, a rod 9 is inserted through the guide through hole 5 of the auxiliary tool main body 1 from the other end 1b of the auxiliary tool main body 1, and the tip 9a of the rod 9 is cut into the cut end 11 of the remaining portion 11 of the screw.
The auxiliary tool main body 1 is adjusted to the remaining
Is adhered to the periphery 15a of the screw hole 13 on the surface of the support 15 provided with the screw hole 13 screwed by the adhesive layer 7, and the rod 9 is pulled out from the guide through hole 5 of the auxiliary tool body 1. Subsequently, the drill 17 is inserted into the guide through hole 5 of the auxiliary tool main body 1, and a center hole 19 for excavating the remaining portion 11 is formed in the remaining portion 11 of the screw by the drill 17. Thereafter, the remaining portion 11 of the screw is dug along the center hole 19 by using an appropriate tool 21.

The case shown in FIGS. 5 to 7 will be described.
In this case, a convex portion 23 is formed at one end 1a of the assisting device main body 1 instead of the concave portion 3 in the above case, and the convex portion 2 is formed.
3 is fitted in the screw hole 13 into which the remaining portion 11 of the screw is screwed, but in other respects, this case is the same as the above case. Note that a magnet 7 ′ may be attached instead of the adhesive layer 7 around the convex portion 23 at the one end 1 a of the auxiliary tool main body 1.

The auxiliary tool body 1 shown in FIGS. 1, 2 and 4 has a projection 23 'similar to the projection 23 shown in FIGS. 5 and 6 at the other end 1b. The auxiliary tool main body 1 shown in FIG. 6 has a recess 3 'similar to the recess 3 shown in FIGS. 1 and 2 at the other end 1b. An adhesive layer 7 is provided around the convex portion 23 'or the concave portion 3' at the other end 1b of the auxiliary tool main body 1 as necessary.

In the case shown in FIG.
A concave portion 31 is formed in one end 1a of the auxiliary tool body, and the concave portion 31 is provided with a female screw 35 corresponding to the external thread 33 of the remaining portion 11 of the screw, and a guide through hole extending from the concave portion 31 to the other end 1b of the assisting device body 1. 5 is formed, and the center line of the guide through hole 5 is made to coincide with the center line of the concave portion 31. It is preferable that the assisting tool body 1 is provided with a non-slip means 37 for enabling the assisting tool body 1 to be easily rotated by hand. That is, as one example, irregularities are formed on the peripheral surface of the assisting device main body 1 as the non-slip means 37.

The recess 31 of the main body 1 of the auxiliary tool is replaced with the remaining portion 1 of the screw.
1 is screwed into a portion 11 b protruding from the screw hole 13, a drill 17 is inserted into the guide through hole 5 of the auxiliary tool main body 1, and the remaining portion 1
Drill a center hole for excavating 1.

The case shown in FIG. 9 will be described. In the case shown in FIG. 9, a convex portion 39 is formed at one end 1a of the assisting device main body 1 instead of the concave portion 31 in the case of FIG.
The projection 39 is provided with a male screw 43 corresponding to the female screw 41 of the screw hole 13 into which the remaining portion 11 of the screw is screwed. The screw holes 13 are screwed together, but in other respects the case of FIG. 9 is the same as the case of FIG.

In the case shown in FIG.
The other end 1b of the auxiliary tool main body 1 is provided with a protrusion 39 'similar to the protrusion 39 in the case of FIG. 9, and in the case shown in FIG. A recess 31 'is provided.

The case shown in FIGS. 10 to 12 will be described. In this case, the screw member 5
The male screw member 53 is formed with a guide through hole 55 passing through the center of the male screw member 53 in the longitudinal direction of the male screw member 53. Screw 5
7 corresponds to the male screw 33 in the remaining portion 11 of the screw, and the male screw 59 in the male screw member 53 is
Correspond to the female screw 41 of the screw hole 13 screwed.
It is desirable that the female screw cylinder 51 is provided with a non-slip means 61 for enabling the female screw cylinder 51 to be easily rotated by hand. That is, as an example, unevenness is formed as a non-slip means 61 on the peripheral surface of the female screw cylinder 51. FIG.
0, in FIG. 11, a hexagonal hole 63 for rotating the male screw member 53 with a tool is provided at one end of the male screw member 53.
Is provided.

The female screw cylinder 51 is screwed into a portion 11b of the remaining portion 11 of the screw projecting from the screw hole 13 or the male screw member 53 is screwed into the screw hole 13 into which the remaining portion 11 of the screw is screwed. Then, the drill 17 is inserted into the guide through hole 55 of the male screw member 53, and the remaining portion 1 of the screw is
1 is provided with a center hole for excavating the remaining portion 11.

[0036]

According to the first aspect of the present invention, the drill is used in a state in which the center line of the guide through hole in the body of the auxiliary tool is aligned with the center line of the remaining portion of the screw by the rod-shaped body. The drill is inserted into the guide through-hole of the auxiliary tool body and the drill is used to drill the remaining part of the screw, so that the drill is guided by the guide through-hole of the auxiliary tool body and accurately positions the remaining part of the screw along its center line. Dig to That is, a center hole is formed in the remaining portion of the screw along the center line. Therefore, the remaining portion of the screw can be easily dug out along the center hole with an appropriate tool. Further, the residual portion removing aid can be used for removing residual portions of screws having various diameters.

The auxiliary tool for removing the remaining portion of the cut screw according to the second aspect of the present invention is the auxiliary tool for removing the remaining portion of the severed screw at one end of the main body of the auxiliary tool, instead of the concave portion in the first aspect. A convex portion is formed, and the convex portion is fitted into a screw hole into which the remaining portion of the screw is screwed. However, the same effect as that of the auxiliary tool for removing the remaining portion of the cut screw according to claim 1 is obtained. Demonstrate.

The auxiliary tool for removing a remaining portion of a cut screw according to the third aspect of the present invention is the auxiliary tool for removing a residual portion of a cut screw according to the first aspect of the present invention around the concave portion at one end of the main body of the auxiliary tool. A magnet is attached in place of the layer, and wherein the magnet is attached.
It has the same effect as the tool for removing the remaining portion of the cut screw.

The auxiliary tool for removing the remaining portion of the cut screw according to the fourth aspect of the present invention is the auxiliary tool for removing the remaining portion of the severed screw around the convex portion at one end of the main body of the auxiliary tool. A magnet is attached in place of the adhesive layer.
It has the same effect as the tool for removing the remaining portion of the cut screw.

The center line of the guide through-hole coincides with the center line of the concave portion, so that the concave portion of the body of the auxiliary member is screwed into the screw hole in the remaining portion of the screw. When the screw is engaged with the portion protruding from the screw, the center line of the guide through hole in the auxiliary tool body coincides with the center line in the remaining portion of the screw. Therefore, when the drill is inserted into the guide through-hole of the auxiliary tool main body and the remaining part of the screw is drilled by the drill, the drill is guided by the guide through-hole of the auxiliary tool main body and moves the remaining part of the screw along the center line thereof. Dig exactly. That is, a center hole is formed in the remaining portion of the screw along the center line. The remaining portion of the screw can be easily dug out along the center hole thus formed with an appropriate tool.

The assisting device for removing the remaining portion of the cut screw according to the sixth aspect of the present invention is the auxiliary device for removing the remaining portion of the severed screw, which is provided at one end of the auxiliary device body instead of the concave portion according to the fifth aspect. A convex portion is formed, the convex portion is provided with a male screw corresponding to a female screw of a screw hole in which the remaining portion of the screw is screwed, and the convex portion is screwed into the screw hole. Has the same effect as the assisting device for removing the remaining portion of the cut screw of the fifth aspect.

The assisting device for removing the remaining portion of the cut screw according to the seventh aspect of the present invention is the assisting device for removing the remaining portion of the cut screw, wherein the cut end of the remaining portion of the cut screw projects from the screw hole. It can be used equally when the cut end is immersed in the screw hole. Advancing and retracting the screw member with respect to the female screw member in accordance with the height of the portion where the cut end protrudes from the screw hole in the remaining portion of the cut screw or the depth at which the cut end is immersed in the screw hole. Can be.

Since the guide through hole passes through the center of the male screw member in the longitudinal direction of the male screw member, the female screw cylinder is screwed into a portion of the remaining portion of the screw projecting from the screw hole, or Is screwed into the screw hole into which the remaining portion of the screw is screwed, the center line of the guide through hole coincides with the center line of the remaining portion of the screw. Therefore, when the drill is inserted into the guide through-hole and the remaining portion of the screw is drilled by the drill, the drill is guided by the guide through-hole and accurately excavates the remaining portion of the screw along its center line. That is, a center hole is formed in the remaining portion of the screw along the center line. The remaining portion of the screw can be dug out along the center hole thus formed with an appropriate tool.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a use state of an example of a tool for removing a remaining portion of a cut screw.

FIG. 2 is a cross-sectional view showing another use state of the auxiliary tool.

FIG. 3 is a cross-sectional view showing a remaining portion of a screw in which a center hole is formed.

FIG. 4 is a plan view of the auxiliary tool.

FIG. 5 is a cross-sectional view showing a use state of another example of the assisting device for removing a remaining portion of a cut screw.

FIG. 6 is a cross-sectional view showing another use state of the auxiliary tool.

FIG. 7 is a cross-sectional view showing a remaining portion of the screw in which a center hole is formed.

FIG. 8 is a cross-sectional view showing a use state of still another example of the assisting device for removing a remaining portion of a cut screw.

FIG. 9 is a cross-sectional view showing a use state of still another example of the assisting device for removing a remaining portion of a cut screw.

FIG. 10 is a cross-sectional view showing a use state of still another example of the assisting device for removing a remaining portion of a cut screw.

FIG. 11 is a cross-sectional view showing another usage state of the auxiliary tool.

FIG. 12 is a plan view of the auxiliary tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aid main body 1a One end 1a 'End face 1b The other end 3 Recess 3' Recess 5 Guide through hole 7 Adhesive layer 7 'Magnet 9 Rod 9a Tip 11 Remaining portion of screw 11a Cutting end 11b Projecting portion 13 Screw hole 15 Support Body 15a Periphery 17 Drill 19 Center hole 21 Tool 23 Convex 23 'Convex 31 Concave 31' Concave 33 Male screw 35 Female thread 37 Non-slip means 39 Convex part 39 'Convex part 41 Female thread 43 Male thread 51 Female thread cylinder 53 Male screw member 55 Guide through hole 57 Female screw 59 Male screw 61 Non-slip means 63 Hexagon hole

Claims (7)

[Claims] An auxiliary tool body having a recess formed at one end thereof and a guide through-hole extending from the recess to the other end of the auxiliary tool body in a direction perpendicular to an end surface of the auxiliary tool body at one end side; An adhesive layer is provided around the concave portion at the one end of the main body, a rod is inserted into the guide through hole of the auxiliary tool main body, and the tip of the rod is aligned with the center of the cut end in the remaining portion of the screw. The auxiliary tool body is adhered to the periphery of the screw hole on the surface of the support provided with the screw hole into which the remaining portion is screwed by an adhesive layer, and the rod is pulled out from the guide through hole of the auxiliary tool body, Characterized in that a drill is inserted into a guide through hole of the auxiliary tool body, and a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill. Part removal aid. 2. A projecting portion is formed at one end of the assisting device main body, and a guide through hole extending from the projecting portion to the other end of the assisting device main body is formed in a direction orthogonal to the end face of the assisting device main body at one end side, An adhesive layer is provided around the protrusion at the one end of the auxiliary tool body,
The rod is inserted into the guide through hole of the assisting device main body, and the protrusion of the assisting device main body is screwed into the remaining portion of the screw while the tip of the rod is aligned with the center of the cut end of the remaining portion of the screw. And the auxiliary tool body is adhered to the periphery of the screw hole on the surface of the support provided with the screw hole by an adhesive layer, and the rod is pulled out from the guide through hole of the auxiliary tool body, and then drilled. Characterized in that a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill, and the remaining portion of the cut screw is removed. Aids. 3. A recess is formed at one end of the assisting device main body, and a guide through hole extending from the recess to the other end of the assisting device main body is formed in a direction orthogonal to the end face of the assisting device main body at the one end side. A magnet is attached around the concave portion at the one end of the main body, a rod is inserted into the guide through hole of the auxiliary tool main body, and the tip is aligned with the center of the cut end in the remaining portion of the screw. The tool body is attracted by a magnet around the screw hole on the surface of the support provided with a screw hole in which the remaining portion is screwed, and the rod is pulled out from the guide through hole of the auxiliary tool body.
Subsequently, a drill is inserted into the guide through-hole of the auxiliary tool main body, and a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill. Remaining part removal aid. 4. A projecting portion is formed at one end of the assisting device main body, and a guide through hole extending from the projecting portion to the other end of the assisting device main body is formed in a direction orthogonal to an end face of the assisting device main body at the one end side, A magnet is attached around the convex portion at the one end of the auxiliary tool main body, a rod is inserted into the guide through hole of the auxiliary tool main body, and the tip of the rod is aligned with the center of the cut end in the remaining portion of the screw. In the state, the convex part of the auxiliary tool body is fitted into the screw hole where the remaining part of the screw is screwed, and the auxiliary tool body is attracted by the magnet around the screw hole on the surface of the support provided with the screw hole, The rod-shaped body is pulled out from the guide through-hole of the assisting device main body, and then a drill is inserted into the guide through-hole of the assisting device main body, and the drill is used to form a center hole for excavating the remaining portion of the screw. Assisting device for removing remaining portion of cut screw, characterized in that . 5. A recess is formed at one end of the assisting device main body, the recessed portion is provided with a female screw corresponding to an external thread of the remaining portion of the screw, and a guide through hole extending from the recessed portion to the other end of the assisting device main body is provided. The center line of the guide through hole is aligned with the center line of the concave portion, and the concave portion of the auxiliary tool main body is screwed into a portion of the remaining portion of the screw projecting from the screw hole, and the drill is connected to the auxiliary tool main body. A tool for removing a remaining portion of a cut screw, wherein the tool is inserted into a guide through hole, and a center hole for excavating the remaining portion is formed in the remaining portion of the screw by the drill. 6. A projecting portion is formed at one end of the assisting device main body, and the projecting portion is provided with a male screw corresponding to a female screw of a screw hole into which a remaining portion of the screw is screwed. A guide through-hole reaching the other end of the assisting device main body is formed, the center line of the guide through-hole is made to coincide with the center line of the projecting portion, and the projecting portion of the assisting device body is screwed with the remaining portion of the screw. The screw hole is screwed into the screw hole, the drill is inserted into the guide through hole of the auxiliary tool body, and the drill is used to form a center hole for excavating the remaining portion of the screw. Auxiliary tool for removing remaining parts of cut screws. 7. A threaded member is screwed to a female screw cylinder so as to be able to advance and retreat, and a guide hole is formed in the male screw member so as to pass through the center of the male screw member in the longitudinal direction of the male screw member. The female screw in the female screw cylinder corresponds to the male screw in the remaining portion of the screw, and the male screw in the male screw member corresponds to the female screw in the screw hole in which the remaining portion of the screw is screwed. The cylinder is screwed into the portion of the remaining portion of the screw that protrudes from the screw hole, or the male screw member is screwed into the screw hole into which the remaining portion of the screw is screwed, and the drill is inserted into the guide through hole of the male screw member. A tool for removing a remaining portion of a cut screw, wherein a center hole for inserting and excavating the remaining portion is formed in the remaining portion of the screw by the drill.