JP6573300B1 - Machining tools - Google Patents

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JP6573300B1
JP6573300B1 JP2019065276A JP2019065276A JP6573300B1 JP 6573300 B1 JP6573300 B1 JP 6573300B1 JP 2019065276 A JP2019065276 A JP 2019065276A JP 2019065276 A JP2019065276 A JP 2019065276A JP 6573300 B1 JP6573300 B1 JP 6573300B1
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tool
leaf spring
holder
steel ball
cantilever leaf
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JP2020163505A (en
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ディン ディン グィエン
ディン ディン グィエン
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KATO MFG. CO., LTD.
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KATO MFG. CO., LTD.
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Abstract

【課題】正確で安定した微小伸縮が可能な加工工具を提供する。【解決手段】連結部（１ａ）が上位装置に連結され、筒部（１ｂ）を有する上部体（１）と、上部体（１）の筒部（１ｂ）に装着され、筒状の外壁が切り込まれて片持ち板ばね（１１）が形成されたホルダー本体（２）と、筒部（１ｂ）に形成された窪み（１２）に保持され、一側がホルダー本体（２）の片持ち板ばね（１１）に形成された溝（１４）に係合する鋼球（３）と、ホルダー本体（２）の下端に設けられ、工具（２０）を交換可能に把持するタップ把持具（１５）と、筒部（１ｂ）にネジ着され、外側から筒部（１ｂ）と鋼球（３）を覆うように設けられるカバー（１３）と、を備え、工具からの押し返し力（２５）又は工具の引張り力（２６）によって、片持ち板ばね（１１）が撓み、ホルダー本体（２）を軸方向に微小変位させる。【選択図】図１Provided is a machining tool capable of accurate and stable microextension and contraction. A connecting portion (1a) is connected to a host device, and is attached to an upper body (1) having a cylindrical portion (1b) and a cylindrical portion (1b) of the upper body (1), and a cylindrical outer wall is provided. The holder body (2), which is cut and formed with a cantilever leaf spring (11), and the recess (12) formed in the cylindrical portion (1b), one side being a cantilever plate of the holder body (2) A steel ball (3) engaged with a groove (14) formed in the spring (11), and a tap gripping tool (15) provided at the lower end of the holder body (2) to grip the tool (20) in an exchangeable manner. And a cover (13) that is screwed to the cylindrical portion (1b) and is provided so as to cover the cylindrical portion (1b) and the steel ball (3) from the outside, and a reversing force (25) from the tool or the tool The cantilever leaf spring (11) is bent by the tension force (26) of the holder, and the holder body (2) is slightly displaced in the axial direction. To. [Selection] Figure 1

Description

本発明は、加工工具に係り、より詳しくは、片持ち板ばねによるホルダー本体の微小伸縮が可能な加工工具に関する。   The present invention relates to a processing tool, and more particularly to a processing tool capable of minute extension and contraction of a holder body by a cantilever leaf spring.

特許文献１には、軸方向に微小伸縮が可能な加工工具（タッパー）が示される。この加工工具は、上部体とホルダー本体からなり、上部体を工作機械の主軸に装着し、ホルダー本体の下端のコレットチャックに工具（タップ）を取り付ける。ホルダー本体は、環状の第１弾性体と第２弾性体で支持され、工具（タップ）で工作物にネジ穴をあける際、タップの押し返し力や引張り力で、微小伸縮する。具体的には、第１弾性体がタップの押し返し力で縮み、第２弾性体がタップの引張り力で縮む。しかしながら、第１及び第２弾性体は、耐油性のゴムからなるので、弾性係数にばらつきがあり正確な荷重計算が難しい。   Patent Document 1 discloses a processing tool (tapper) capable of minute expansion and contraction in the axial direction. This processing tool is composed of an upper body and a holder main body. The upper body is mounted on a spindle of a machine tool, and a tool (tap) is attached to a collet chuck at the lower end of the holder main body. The holder main body is supported by the annular first elastic body and the second elastic body, and when the screw hole is made in the workpiece with a tool (tap), the holder main body is slightly expanded and contracted by the pushing back force and the pulling force. Specifically, the first elastic body contracts due to the pushing back force of the tap, and the second elastic body contracts due to the pulling force of the tap. However, since the first and second elastic bodies are made of oil-resistant rubber, the elastic coefficients vary and it is difficult to calculate an accurate load.

特許文献２には、軸方向に微小伸縮が可能なタップホルダーが示される。このタップホルダーは、シャンクとホルダー本体からなり、シャンクを工作機械の主軸に装着し、ホルダー本体の下端に設けられたタップコレットに工具（タップ）を取り付ける。微小伸縮は、鋼球と、ワッシャーと、巻きばねと、ナットと、ボルトとで行なう。しかしながら、簡単な構造の微小伸縮機構が望まれる。   Patent Document 2 discloses a tap holder that can be slightly expanded and contracted in the axial direction. This tap holder is composed of a shank and a holder body. The shank is mounted on the spindle of a machine tool, and a tool (tap) is attached to a tap collet provided at the lower end of the holder body. Microscopic expansion and contraction is performed with steel balls, washers, winding springs, nuts, and bolts. However, a simple structure of a micro telescopic mechanism is desired.

特開２０１２−１１４７４号公報JP 2012-11474 A 特開２０１１−１８９４４６号公報JP 2011-189446 A

本発明の目的は、正確で安定したホルダー本体の微小伸縮が可能な加工工具を提供することにある。   An object of the present invention is to provide a processing tool capable of performing a minute expansion and contraction of a holder body that is accurate and stable.

本発明による加工工具は、連結部（１ａ）が上位装置に連結され、筒部（１ｂ）を有する上部体（１）と、上部体（１）の筒部（１ｂ）に装着され、筒状の外壁が切り込まれて片持ち板ばね（１１）が形成されたホルダー本体（２）と、筒部（１ｂ）に形成された窪み（１２）に保持され、一側がホルダー本体（２）の片持ち板ばね（１１）に形成された溝（１４）に係合する鋼球（３）と、上端がホルダー本体（２）の下端に設けられ、工具（２０）を交換可能に把持するタップ把持具（１５）と、筒部（１ｂ）にネジ着され、外側から筒部（１ｂ）と鋼球（３）を覆うように設けられるカバー（１３）と、が備えられ、工具（２０）からの押し返し力（２５）又は工具（２０）の引張り力（２６）によって、片持ち板ばね（１１）が撓み、ホルダー本体（２）が軸方向に微小変位することを特徴とする。   In the machining tool according to the present invention, the connecting portion (1a) is connected to the host device, and is attached to the upper body (1) having the cylindrical portion (1b) and the cylindrical portion (1b) of the upper body (1). Are held in a holder body (2) in which a cantilever leaf spring (11) is formed by cutting the outer wall of the cylinder, and a recess (12) formed in the cylindrical portion (1b), one side of the holder body (2) A steel ball (3) that engages with a groove (14) formed in a cantilever leaf spring (11), and a tap that is provided at the lower end of the holder body (2) and holds the tool (20) in an exchangeable manner. A tool (20) is provided with a gripping tool (15) and a cover (13) that is screwed onto the tube portion (1b) and is provided so as to cover the tube portion (1b) and the steel ball (3) from the outside. The cantilever leaf spring (11) is bent by the reversing force (25) from the screw or the pulling force (26) of the tool (20). Holder body (2), characterized in that the finely displaced in the axial direction.

ホルダー本体（２）の内部に、上部体（１）の軸孔に上部が装着され、軸方向と直交する方向に吐出するクーラント流路（１０）が形成された芯棒（７）と、前記芯棒（７）の下部が挿入され、クーラント流路（１０）がコ字形のクーラントダンパ（６）を有する円筒状のボディ部（２ａ）と、がさらに備えられることを特徴とする。   Inside the holder body (2), the core rod (7) in which the upper part is mounted in the shaft hole of the upper body (1) and the coolant channel (10) for discharging in the direction orthogonal to the axial direction is formed; The lower portion of the core rod (7) is inserted, and the coolant channel (10) is further provided with a cylindrical body portion (2a) having a U-shaped coolant damper (6).

本発明による加工工具によれば、（１）片持ち板ばねと鋼球とによってホルダー本体の微小伸縮を可能としたので、ゴムのような劣化がなく、耐久性のある微小伸縮機構を得ることができる。（２）また、片持ち板ばねの撓みを利用するので、ばらつきがなく、正確で安定した微小伸縮が実現できる。（３）工具（タップ）からの押し返し力では、鋼球の作用点がやや支点寄りなので、強い押し返し力で撓むようにできる。工具（タップ）の引張り力では、片持ち板ばねの作用点が支点からやや遠いので、弱い引張り力でも撓むようにできる。   According to the processing tool of the present invention, (1) since the holder body can be microscopically expanded and contracted by the cantilever plate spring and the steel ball, a durable microscopic expansion and contraction mechanism without deterioration like rubber is obtained. Can do. (2) Further, since the bending of the cantilever leaf spring is used, there is no variation, and accurate and stable minute expansion and contraction can be realized. (3) With the reversing force from the tool (tap), since the action point of the steel ball is slightly closer to the fulcrum, it can be bent with a strong reversing force. With the pulling force of the tool (tap), the point of action of the cantilever leaf spring is slightly far from the fulcrum, so that it can be bent even with a weak pulling force.

ホルダー本体の内部に、上部体の軸孔に装着される芯棒と、芯棒の下部が挿入されるボディ部と、を設け、芯棒に軸方向と直交する方向（水平方向）に吐出するクーラント流路を形成し、ボディ部にコ字形のクーラント流路でクーラントダンパを形成したので、上位装置から送り込んだクーラント（冷却液）による工具（タップ）の冷却ができる。なお、ボディ部にコ字形のクーラントダンパを形成したので、芯棒からボディ部への流路が軸方向と直交する方向、つまり水平にできるので、芯棒の上下方向２箇所にオーリングのシールを行なうことで、芯棒周辺からのクーラント（冷却液）の漏れを効果的に防止できる。   Provided inside the holder main body is a core rod to be fitted into the shaft hole of the upper body and a body portion into which the lower portion of the core rod is inserted, and discharges the core rod in a direction perpendicular to the axial direction (horizontal direction). Since the coolant channel is formed and the coolant damper is formed by the U-shaped coolant channel in the body part, the tool (tap) can be cooled by the coolant (coolant) sent from the host device. In addition, since the U-shaped coolant damper is formed in the body part, the flow path from the core rod to the body portion can be made in a direction perpendicular to the axial direction, that is, horizontal, so that O-ring seals are provided at two locations in the vertical direction of the core rod. By performing this, leakage of coolant (coolant) from around the core rod can be effectively prevented.

本発明による加工工具の構造図（実施例１）である。1 is a structural diagram (Example 1) of a processing tool according to the present invention. 本発明による加工工具の構造図（実施例２）である。It is a structural view (Example 2) of the processing tool by this invention. 本発明による加工工具の構造図（実施例３）である。FIG. 6 is a structural diagram (Example 3) of a processing tool according to the present invention. 図１〜３の片持ち板ばねの説明図である。It is explanatory drawing of the cantilever leaf spring of FIGS. 片持ち板ばねと鋼球の関係を示す図である。It is a figure which shows the relationship between a cantilever leaf spring and a steel ball. 片持ち板ばねの動作説明図である。It is operation | movement explanatory drawing of a cantilever leaf spring.

以下、図面を参照して、本発明による加工工具を説明する。   Hereinafter, a working tool according to the present invention will be described with reference to the drawings.

図１は、本発明による加工工具１００の構造図（実施例１）である。実施例１はクーラント流路がないタイプである。加工工具１００は、上部体１と、ホルダー本体２と、鋼球３と、タップコレット１５ａと、から構成される。上部体１は、連結部１ａと下部の筒部１ｂからなる。連結部１ａは、工作機械やロボットの上位装置に着脱自在に連結される部分である。図１では、連結部１ａは工作機械の主軸に連結されるシャンクを図示した。ホルダー本体２は、上部体１の筒部１ｂに装着され、筒状の外壁が切り込まれて片持ち板ばね１１が形成される。鋼球３は、上部体１の筒部１ｂに形成された窪み１２に保持される。ホルダー本体２を筒部１ｂに挿入した後、鋼球３を窪みに入れて、カバー１３をねじ込んで被せ、鋼球３の脱落を防ぐ。この時、鋼球３は、一側がホルダー本体２の片持ち板ばね１１に形成された円弧状の溝１４に係合させる。タップアダプタ４は、上端がホルダー本体２の下部に嵌め込まれ、止めねじ５で固定される。タップアダプタ４の下側には、タップ把持具１５であるタップコレット１５ａが設けられるので、工具２０を把持すると共に、工具２０の交換を容易に行なえる。   FIG. 1 is a structural diagram (Example 1) of a processing tool 100 according to the present invention. Example 1 is a type without a coolant channel. The processing tool 100 includes an upper body 1, a holder body 2, a steel ball 3, and a tap collet 15a. The upper body 1 includes a connecting portion 1a and a lower cylindrical portion 1b. The connecting portion 1a is a portion that is detachably connected to a host device of a machine tool or a robot. In FIG. 1, the connecting portion 1a is a shank connected to the spindle of the machine tool. The holder main body 2 is mounted on the cylindrical portion 1b of the upper body 1, and a cantilever leaf spring 11 is formed by cutting a cylindrical outer wall. The steel ball 3 is held in a recess 12 formed in the cylindrical portion 1 b of the upper body 1. After inserting the holder main body 2 into the cylindrical portion 1b, the steel ball 3 is put in the recess, and the cover 13 is screwed on to prevent the steel ball 3 from falling off. At this time, one side of the steel ball 3 is engaged with an arcuate groove 14 formed in the cantilever leaf spring 11 of the holder body 2. The upper end of the tap adapter 4 is fitted into the lower part of the holder body 2 and is fixed with a set screw 5. A tap collet 15a, which is a tap gripping tool 15, is provided below the tap adapter 4, so that the tool 20 can be gripped and the tool 20 can be easily replaced.

図１に示すように、上部体１の筒部１ｂの外周に形成された複数の窪み１２に保持された鋼球３が、片持ち板ばね１１の円弧状の溝１４に係合した状態では、ホルダー本体２が鋼球３で吊り下げられたような状態となる。   As shown in FIG. 1, in the state where the steel balls 3 held in the plurality of depressions 12 formed on the outer periphery of the cylindrical portion 1 b of the upper body 1 are engaged with the arc-shaped grooves 14 of the cantilever leaf spring 11. The holder body 2 is in a state of being suspended by the steel ball 3.

図２は、本発明による加工工具１００の構造図（実施例２）である。実施例２は、工具２０を冷却できるクーラント流路があるタイプである。加工工具１００は、上部体１と、ホルダー本体２と、鋼球３と、タップコレット１５ａと、から構成される。これらは図１と同じなので説明を省略する。ホルダー本体２の片持ち板ばね１１も図１と同様に有しているが、これも図示は省略する。ホルダー本体２の内部には、上から下に向かって芯棒７と、ボディ部２ａとが設けられる。芯棒７は上部が上部体１の軸孔にネジ着され、下部がボディ部２ａの凹部に挿入される。芯棒７には、上から下に向かってクーラント流路１０が設けられ、途中で図面の右方向（軸方向と直交する方向）に曲がり、ボディ部２ａのクーラント流路１０に繋がる。ボディ部２ａは、円柱状で、内部にはクーラント流路１０がコ字形のクーラントダンパ６が設けられ、流路は下端の中央から下方向に抜ける。なお、工具２０には、軸中心に流路が設けられており、クーラントは工具２０の先端から吐出される。クーラントの漏れを防止するため、芯棒７の流路の出口付近の上下にオーリング８、８が設けられる。流路が軸方向と直交する方向に曲げられているので、良好なシールができる。ボディ部２ａの下部にもオーリング９が設けられる。   FIG. 2 is a structural diagram (Example 2) of the processing tool 100 according to the present invention. The second embodiment is a type in which there is a coolant channel that can cool the tool 20. The processing tool 100 includes an upper body 1, a holder body 2, a steel ball 3, and a tap collet 15a. Since these are the same as those in FIG. The cantilever leaf spring 11 of the holder body 2 is also provided in the same manner as in FIG. Inside the holder main body 2, a core rod 7 and a body portion 2a are provided from top to bottom. The upper part of the core rod 7 is screwed into the shaft hole of the upper body 1, and the lower part is inserted into the recess of the body part 2a. The core rod 7 is provided with a coolant channel 10 from the top to the bottom, and bends in the right direction (direction orthogonal to the axial direction) in the drawing and is connected to the coolant channel 10 of the body portion 2a. The body portion 2a has a cylindrical shape, and a coolant damper 6 having a U-shaped coolant flow path 10 is provided therein, and the flow path goes downward from the center of the lower end. The tool 20 is provided with a flow path at the center of the shaft, and the coolant is discharged from the tip of the tool 20. In order to prevent leakage of the coolant, O-rings 8 and 8 are provided above and below the outlet of the flow path of the core rod 7. Since the flow path is bent in a direction perpendicular to the axial direction, a good seal can be achieved. An O-ring 9 is also provided below the body portion 2a.

図３は、本発明による加工工具１００の構造図（実施例３）である。実施例３は、実施例２と同様に、工具２０を冷却できるクーラント流路を有するタイプである。加工工具１００は、上部体１と、ホルダー本体２と、鋼球３と、コレットチャック１５ｂと、から構成される。ホルダー本体２の片持ち板ばね１１も、図１と同様にあるが図示は省略している。ホルダー本体２の内部には、上から下に向かって芯棒７と、ボディ部２ａとが設けられる。芯棒７は上側が上部体１の軸孔にネジ着され、下側がボディ部２ａの凹部に挿入される。芯棒７には、上から下に向かってクーラント流路１０が設けられ、途中で図面の右方向に曲がり、ボディ部２ａのクーラント流路１０に繋がる。ボディ部２ａはクーラント流路１０をコ字形に形成したクーラントダンパ６が形成され、流路は、下端中央から下方向に抜ける。ホルダー本体２の下端には、タップ把持具１５であるコレットチャック１５ｂが設けられるので、工具２０を把持すると共に、工具２０の交換を容易に行なえる。   FIG. 3 is a structural diagram (Example 3) of the processing tool 100 according to the present invention. As in the second embodiment, the third embodiment is a type having a coolant channel that can cool the tool 20. The processing tool 100 includes an upper body 1, a holder body 2, a steel ball 3, and a collet chuck 15b. The cantilever leaf spring 11 of the holder body 2 is also similar to that shown in FIG. Inside the holder main body 2, a core rod 7 and a body portion 2a are provided from top to bottom. The upper side of the core rod 7 is screwed into the shaft hole of the upper body 1, and the lower side is inserted into the recess of the body portion 2a. The core rod 7 is provided with a coolant channel 10 from the top to the bottom, and bends in the right direction of the drawing in the middle to be connected to the coolant channel 10 of the body portion 2a. The body portion 2a is formed with a coolant damper 6 in which a coolant channel 10 is formed in a U-shape, and the channel flows downward from the center of the lower end. Since the collet chuck 15b which is the tap gripping tool 15 is provided at the lower end of the holder body 2, the tool 20 can be gripped and the tool 20 can be easily replaced.

図４は、図１、２の片持ち板ばね１１の説明図である。（Ａ）は通常状態で、工具２０には負荷がかかっていないとする。鋼球３は、窪み１２から内側に飛び出ないように保持されており、鋼球３の一部が、片持ち板ばね１１の円弧状の溝１４に係合している。（Ｂ）は、工具２０が、押し返し力２５で示す方向に押し返した場合を示す。この場合、ホルダー本体２が図面左方向に押し返し量Δｃだけ押し返されるとする。その場合、溝１４の右側の傾斜面が鋼球３で押され、片持ち板ばね１１が軸の中心方向に撓む。押し返し力２５は、ネジ切り開始時、工具２０を回転しながら部材に押し付ける場合などにかかる。（Ｃ）は、工具２０が、引張り力２６で示す方向に引っ張った場合を示す。この場合、ホルダー本体２が図面右方向に引張り量Δｔだけ引っ張られるとする。その場合、溝１４の左側の傾斜面が鋼球３で押され、片持ち板ばね１１の先端が軸の中心方向に撓む。引張り力２６は、ネジ切りが終了し、工具２０を回転しながら引き抜く場合などにかかる。（Ｂ）、（Ｃ）に示すように、押し返し力２５又は引張り力２６によって、ホルダー本体２を軸方向に微小変位させることができる。   FIG. 4 is an explanatory diagram of the cantilever leaf spring 11 of FIGS. (A) is a normal state, and it is assumed that the tool 20 is not loaded. The steel ball 3 is held so as not to jump inward from the recess 12, and a part of the steel ball 3 is engaged with the arc-shaped groove 14 of the cantilever leaf spring 11. (B) shows the case where the tool 20 is pushed back in the direction indicated by the pushing force 25. In this case, it is assumed that the holder body 2 is pushed back in the left direction in the drawing by the pushing back amount Δc. In that case, the inclined surface on the right side of the groove 14 is pushed by the steel ball 3, and the cantilever leaf spring 11 bends in the center direction of the shaft. The pushing back force 25 is applied, for example, when the tool 20 is pressed against the member while rotating, at the start of threading. (C) shows the case where the tool 20 is pulled in the direction indicated by the tensile force 26. In this case, it is assumed that the holder body 2 is pulled in the right direction in the drawing by the pull amount Δt. In that case, the inclined surface on the left side of the groove 14 is pushed by the steel ball 3, and the tip of the cantilever leaf spring 11 is bent in the center direction of the shaft. The pulling force 26 is applied when the threading is finished and the tool 20 is pulled out while rotating. As shown in (B) and (C), the holder body 2 can be slightly displaced in the axial direction by the pushing force 25 or the pulling force 26.

図５は、片持ち板ばね１１と鋼球３の関係を示す図である。（Ａ）に示すように、鋼球３は、片持ち板ばね１１に形成された溝１４に係合させている。（Ｂ）に示すように、片持ち板ばね１１が図面の左右方向にわずかに動くと、どちらに動いても、溝１４の傾斜面が鋼球３にあたって、片持ち板ばね１１の先端が撓む。また、片持ち板ばね１１は、上部体（１）からホルダー本体（２）へのトルク伝達力でも溝１４の傾斜面が鋼球３にあたって、片持ち板ばね１１の先端が撓む。   FIG. 5 is a diagram showing the relationship between the cantilever leaf spring 11 and the steel ball 3. As shown to (A), the steel ball 3 is engaged with the groove | channel 14 formed in the cantilever leaf spring 11. FIG. As shown in (B), when the cantilever leaf spring 11 moves slightly in the left-right direction in the drawing, the inclined surface of the groove 14 hits the steel ball 3 and the tip of the cantilever leaf spring 11 bends regardless of the movement. Mu Further, in the cantilever leaf spring 11, the tip of the cantilever leaf spring 11 bends even when the inclined surface of the groove 14 hits the steel ball 3 even with the torque transmission force from the upper body (1) to the holder body (2).

図６は、片持ち板ばね１１の動作説明図である。（Ａ）に示すように、荷重Ｆのかかる作用点が支点から近い場合、大きな荷重で片持ち板ばね１１が撓む。（Ｂ）に示すように、荷重Ｆのかかる作用点が支点から遠い場合、小さな荷重でも片持ち板ばね１１が撓む。なお、作用点が同じでも、図５において、鋼球３の左側と右側では、支点からの距離が異なるので、鋼球３の右側が作用点となる場合を押し返し力２５にするのがよい。一般に、押し返し力２５と引張り力２６では、押し返し力２５の方が、荷重が大きいことによる。（Ｃ）に示すように、片持ち板ばね１１を荷重に対し、どの程度撓ませるかは、支点の箇所の板厚を薄くするか厚くするかで調節できる。   FIG. 6 is an explanatory diagram of the operation of the cantilever leaf spring 11. As shown to (A), when the action point where the load F is applied is close to the fulcrum, the cantilever leaf spring 11 bends with a large load. As shown in (B), when the acting point where the load F is applied is far from the fulcrum, the cantilever leaf spring 11 bends even with a small load. Even if the point of action is the same, the distance from the fulcrum differs between the left side and the right side of the steel ball 3 in FIG. In general, the pushing force 25 and the pulling force 26 are because the pushing force 25 has a larger load. As shown in (C), how much the cantilever leaf spring 11 is bent with respect to the load can be adjusted by reducing or increasing the thickness of the fulcrum.

本発明は、微小伸縮が可能な加工工具として好適である。   The present invention is suitable as a processing tool capable of minute expansion and contraction.

１ 上部体
１ａ 連結部
１ｂ 筒部
２ ホルダー本体
２ａ ボディ部
３ 鋼球
４ タップアダプタ
５ 止めねじ
６ クーラントダンパ
７ 芯棒
８、９ オーリング
１０ クーラント流路
１１ 片持ち板ばね
１２ 窪み
１３ カバー
１４ 溝
１５ タップ把持具
１５ａ タップコレット
１５ｂ コレットチャック
２０ 工具（タップ）
２５ 押し返し力
２６ 引張り力
３２ 第１弾性体
３３ 第２弾性体
１００ 加工工具 DESCRIPTION OF SYMBOLS 1 Upper body 1a Connection part 1b Cylinder part 2 Holder main body 2a Body part 3 Steel ball 4 Tap adapter 5 Set screw 6 Coolant damper 7 Core rod 8, 9 O ring 10 Coolant flow path 11 Cantilever leaf spring 12 Depression 13 Cover 14 Groove 15 Tap gripping tool 15a Tap collet 15b Collet chuck 20 Tool (tap)
25 Pushing force 26 Tensile force 32 First elastic body 33 Second elastic body 100 Processing tool

Claims (2)

連結部（１ａ）が上位装置に連結され、筒部（１ｂ）を有する上部体（１）と、
上部体（１）の筒部（１ｂ）に装着され、筒状の外壁が切り込まれて片持ち板ばね（１１）が形成されたホルダー本体（２）と、
筒部（１ｂ）に形成された窪み（１２）に保持され、一側がホルダー本体（２）の片持ち板ばね（１１）に形成された溝（１４）に係合する鋼球（３）と、
ホルダー本体（２）の下端に設けられ、工具（２０）を交換可能に把持するタップ把持具（１５）と、
筒部（１ｂ）にネジ着され、外側から筒部（１ｂ）と鋼球（３）を覆うように設けられるカバー（１３）と、
が備えられ、
工具（２０）からの押し返し力（２５）又は工具（２０）の引張り力（２６）によって、片持ち板ばね（１１）が撓み、ホルダー本体（２）が軸方向に微小変位することを特徴とする加工工具。
An upper body (1) having a connecting portion (1a) connected to a host device and having a cylindrical portion (1b);
A holder main body (2) mounted on the cylindrical portion (1b) of the upper body (1) and having a cantilever leaf spring (11) formed by cutting a cylindrical outer wall;
A steel ball (3) held in a recess (12) formed in the cylindrical portion (1b), and one side engaging with a groove (14) formed in a cantilever leaf spring (11) of the holder body (2); ,
A tap gripping tool (15) provided at the lower end of the holder body (2) and gripping the tool (20) in a replaceable manner;
A cover (13) screwed to the tube portion (1b) and provided to cover the tube portion (1b) and the steel ball (3) from the outside;
Is provided,
The cantilever leaf spring (11) is bent by the pushing force (25) from the tool (20) or the pulling force (26) of the tool (20), and the holder body (2) is slightly displaced in the axial direction. Machining tool to do.
ホルダー本体（２）の内部に、
上部体（１）の軸孔に上部が装着され、軸方向と直交する方向に吐出するクーラント流路（１０）が形成された芯棒（７）と、
前記芯棒（７）の下部が挿入され、クーラント流路（１０）がコ字形のクーラントダンパ（６）を有する円筒状のボディ部（２ａ）と、
がさらに備えられることを特徴とする請求項１に記載の加工工具。 Inside the holder body (2)
A core rod (7) in which an upper part is mounted in the shaft hole of the upper body (1) and a coolant channel (10) for discharging in a direction orthogonal to the axial direction is formed;
A cylindrical body portion (2a) in which a lower portion of the core rod (7) is inserted and a coolant channel (10) has a U-shaped coolant damper (6);
The machining tool according to claim 1, further comprising:
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155137A (en) * 1982-03-03 1983-09-14 Kuroda Precision Ind Ltd Tool holder mounting device
JPH0325868Y2 (en) * 1986-05-31 1991-06-05
JPH0760544A (en) * 1993-08-23 1995-03-07 Yasuda Gijutsu Service:Kk Tap holder
TW468526U (en) * 1999-10-13 2001-12-11 Shi-Huei Yu Improved elastic sleeve clip structure
DE102006011047A1 (en) * 2006-03-25 2007-09-27 Ortlieb Präzisions-Spannzeuge GmbH + Co. Monoblock collet as coupling element for the HSK interface
JP5504994B2 (en) * 2010-03-15 2014-05-28 カトウ工機株式会社 Tap holder
JP5179556B2 (en) * 2010-10-26 2013-04-10 株式会社日研工作所 Tap holder
CN203409285U (en) * 2013-08-01 2014-01-29 江苏省常州技师学院 Elastic tap chuck

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