JP2022112461A - Spot drill provided with penetration preventing function - Google Patents

Spot drill provided with penetration preventing function Download PDF

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Publication number
JP2022112461A
JP2022112461A JP2021042946A JP2021042946A JP2022112461A JP 2022112461 A JP2022112461 A JP 2022112461A JP 2021042946 A JP2021042946 A JP 2021042946A JP 2021042946 A JP2021042946 A JP 2021042946A JP 2022112461 A JP2022112461 A JP 2022112461A
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JP
Japan
Prior art keywords
sheet metal
spot
hole
drill
drilled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2021042946A
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Japanese (ja)
Inventor
英司 守本
Eiji Morimoto
宏之 石倉
Hiroyuki Ishikura
裕哉 藤山
Yuya Fujiyama
俊治 才野
Shunji Saino
春奈 平坂
Haruna Hirasaka
大裕 佐藤
Daiyu Sato
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Green Tool Co Ltd
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Green Tool Co Ltd
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Filing date
Publication date
Application filed by Green Tool Co Ltd filed Critical Green Tool Co Ltd
Priority to JP2021042946A priority Critical patent/JP2022112461A/en
Publication of JP2022112461A publication Critical patent/JP2022112461A/en
Pending legal-status Critical Current

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Abstract

To solve the problem in that a rear fender of an automobile, a side sill panel, a frame-related inner plate skeleton, etc. are bonded by spot-welding a plurality of sheet metals; when a damage occurs due to an accident, a work for replacing a spot-welded sheet metal may be required, in which a welded portion is peeled using a spot drill so that a hole is drilled in a to-be-replaced-side sheet metal but a hole is not drilled in a to-be-left-side sheet metal; however, the above-described spot drill may penetrate the sheet metal though it must not penetrate it, which depends on an amount of force applied by a worker, and if the drill penetrates the sheet metal, a hole must to be filled by performing welding on the to-be-left-side sheet metal.SOLUTION: A spot drill for processing a welded portion of a spot-welded sheet metal so as to prevent penetration has a step 1 for preventing penetration, and a clearance angle 3 of this step has an angle toward the front of the tool, that is, cutting capability is not provided. In other words, a hole can be drilled by a length 2 of the step but cannot be drilled beyond the length 2 of the step.SELECTED DRAWING: Figure 1

Description

本発明は、自動車の事故等で修理が必要になった板金作業において、スポット溶接で接合されたパネルを剥がす作業を行うときに、スポットドリルが貫通することなく穴あけが出来る作業に関する。 The present invention relates to a sheet metal work that requires repair due to an automobile accident or the like, and relates to a work that allows a hole to be drilled without a spot drill penetrating when a panel joined by spot welding is peeled off.

自動車のリアフェンダーやサイドシルパネル、フレーム関係の内板骨格などは複数枚の板金をスポット溶接して張り合わせている。事故で損傷するとスポット溶接されている板金を取り換える作業が必要になることがあり、取り替える板金側に穴を空けて、残す側の板金には穴を空けないように、スポットドリルを使用して溶接部分を剥がす作業を行っている。 Automobile rear fenders, side sill panels, frame-related internal plate frameworks, etc. are made by spot-welding multiple sheets of sheet metal together. If it is damaged in an accident, it may be necessary to replace the sheet metal that has been spot-welded. Welding is performed using a spot drill so that a hole is made in the sheet metal to be replaced and not in the remaining sheet metal. I am in the process of removing parts.

特開２００５－８１５２２JP 2005-81522

上記のスポットドリルを使用する作業は貫通防止機能が無いため、作業者の力量に依存し、貫通してはいけないにも関わらず、板金を貫通してしまうことがある。貫通してしまえば残す側の板金に、溶接をして穴を埋めなければならない。 Since the work using the above spot drill does not have a penetration prevention function, depending on the skill of the operator, it may penetrate the sheet metal even though it should not be penetrated. Once it penetrates, the remaining sheet metal must be welded to fill the hole.

本発明に係るスポットドリルには、貫通を防止するための段１を有し、この段部の逃げ角３は工具前方に向かう角度を有する、すなわち切削能力がない。つまり、段の長さ２だけ穴を空けることができるが、段の長さ２を超える穴をあけられないようにする。 The spot drill according to the invention has a step 1 to prevent penetration, the relief angle 3 of which step is directed towards the front of the tool, i.e. no cutting capability. That is, a step length of 2 can be drilled, but no more than a step length of 2 can be drilled.

本発明において、穴を貫通しないようにするためには、作業者の力量に頼るところが大きかったが、誰でも貫通することなく板金を剥がすことが出来る。 In the present invention, in order to prevent the hole from penetrating, it relied heavily on the skill of the operator, but anyone can peel off the sheet metal without penetrating.

本発明におけるスポットドリルの側面図である。 It is a side view of a spot drill in the present invention.

図１に本発明に係るスポットドリルの実施例を示す。図１において従来は２枚刃が主流であったが４枚刃にすることで、先端では１刃の仕事量を減らすことで寿命を延ばし、段１では貫通しない力を２枚刃より大きくすることができる。 FIG. 1 shows an embodiment of a spot drill according to the present invention. In Fig. 1, 2 blades were the mainstream in the past, but by using 4 blades, the amount of work per blade at the tip is reduced, extending the life, and the force that does not penetrate at stage 1 is greater than that of 2 blades. be able to.

先端に三角の凸４を設けることで、穴あけ位置がぶれることなく、安定して穴あけが可能になる。 By providing the triangular projection 4 at the tip, the hole can be stably drilled without shifting the drilling position.

１段
２段の長さ
３段の逃げ角
４三角の凸
５工具中心線に対し直角な線
６工具中心線1 step Length of 2 steps 3 step relief angle 4 Triangular convex 5 Line perpendicular to tool center line 6 Tool center line

Claims (2)

板金を重ねてスポット溶接された板金を剥がす作業に使用する穴あけ工具において、先端から１～４ｍｍ部分に切削能力を有さない段１を設け、段の長さ２以上に穴を空けることが困難になることを特徴とするスポットドリル。 A drilling tool used for peeling sheet metal that has been spot-welded by stacking sheet metal is provided with a step 1 that does not have cutting ability at a portion of 1 to 4 mm from the tip, making it difficult to make a hole with a step length of 2 or more. A spot drill characterized by becoming 請求項１のスポットドリルにおいて、段の逃げ角３を工具中心線６に対し直角な線５を基準に工具前方に向かって０°以上にすることで、より切削能力を有さない形状を特徴とするスポットドリル。 The spot drill of claim 1 is characterized by a shape with less cutting ability by setting the clearance angle 3 of the step to 0° or more toward the front of the tool with respect to the line 5 perpendicular to the tool center line 6 as a reference. and spot drill.
JP2021042946A 2021-01-21 2021-01-21 Spot drill provided with penetration preventing function Pending JP2022112461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021042946A JP2022112461A (en) 2021-01-21 2021-01-21 Spot drill provided with penetration preventing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021042946A JP2022112461A (en) 2021-01-21 2021-01-21 Spot drill provided with penetration preventing function

Publications (1)

Publication Number Publication Date
JP2022112461A true JP2022112461A (en) 2022-08-02

Family

ID=82656165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021042946A Pending JP2022112461A (en) 2021-01-21 2021-01-21 Spot drill provided with penetration preventing function

Country Status (1)

Country Link
JP (1) JP2022112461A (en)

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