WO2015136637A1 - 工具ホルダ - Google Patents

工具ホルダ Download PDF

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Publication number
WO2015136637A1
WO2015136637A1 PCT/JP2014/056449 JP2014056449W WO2015136637A1 WO 2015136637 A1 WO2015136637 A1 WO 2015136637A1 JP 2014056449 W JP2014056449 W JP 2014056449W WO 2015136637 A1 WO2015136637 A1 WO 2015136637A1
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WO
WIPO (PCT)
Prior art keywords
tool
holder
axis
intermediate member
holder body
Prior art date
Application number
PCT/JP2014/056449
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English (en)
French (fr)
Inventor
土居正幸
Original Assignee
大昭和精機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 大昭和精機株式会社 filed Critical 大昭和精機株式会社
Priority to JP2016507178A priority Critical patent/JPWO2015136637A1/ja
Priority to PCT/JP2014/056449 priority patent/WO2015136637A1/ja
Publication of WO2015136637A1 publication Critical patent/WO2015136637A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/028—Chucks the axial positioning of the tool being adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
    • B23Q1/5425—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair followed perpendicularly by a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/022—Indexing equipment in which only the indexing movement is of importance
    • B23Q16/023—Indexing equipment in which only the indexing movement is of importance by converting a reciprocating or oscillating movement into or linear indexing movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2216—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool into its holder

Definitions

  • the present invention provides a holder main body, a tool holding portion for fixing a tool provided in a tip end region of the holder main body, abutting on the end of the tool in a direction along the axis of the holder main body, and
  • the present invention relates to a tool holder including a tool position adjusting mechanism for determining a protruding length of the tool.
  • Patent Document 1 describes the prior art of the tool holder.
  • the tool position adjusting mechanism provided in this conventional tool holder can be operated from the outside of the holder body, an adjustment member that can reciprocate in the direction along the axis of the holder body inside the holder body, and can come into contact with the tool.
  • an operation member for directly transmitting the rotational force to the adjustment member That is, an operation member having worm teeth and an adjustment member having helical teeth are provided, and the operation member and the adjustment member are assembled to the holder main body in a posture in which the worm teeth mesh with the helical teeth.
  • an operation position and an operation posture with respect to an operation tool such as a wrench or an operation member by a human hand are set according to a user's request.
  • an operation tool such as a wrench or an operation member by a human hand
  • the operation position and operation posture of the operation tool attached to the operation member can be adjusted according to the user's specific usage environment. It is desirable to set it so as not to cause trouble.
  • a conventional tool position adjustment mechanism provided in a conventional tool holder has a posture in which the worm teeth mesh with the helical teeth, i.e., the operation member is assembled to the holder main body in a posture in which the axis is perpendicular to the direction along the axis of the holder main body. is there. For this reason, for example, when the operation member is assembled by moving toward the front side of the holder while maintaining the relative position with the gripping portion constant so as not to cause trouble when the operation member is operated, the holder body may be enlarged.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a tool holder in which an operation position and an operation posture with respect to an operation member can be easily set according to a user's request.
  • the characteristic configuration of the tool holder according to the present invention includes a holder main body, a tool gripping portion that is provided in a tip end region of the holder main body, and that fixes a tool, and contacts the end of the tool in a direction along the axis of the holder main body.
  • a tool position adjusting mechanism that determines a protruding length of the tool relative to the holder body, and the tool position adjusting mechanism reciprocates in the direction along the axis of the holder body inside the holder body,
  • An adjustment member that can contact the tool, an intermediate member that can rotate around an axis different from the axis of the holder main body while contacting the outer surface of the adjustment member, and can be operated from the outside of the holder main body.
  • the tool position adjusting mechanism reciprocates in the direction along the axis of the holder main body inside the holder main body, and the holder is in contact with the outer surface of the adjusting member.
  • An intermediate member rotatable around an axis different from the axis of the main body and an operation member operable from the outside of the holder main body and transmitting a rotational force to the intermediate member are provided. That is, an intermediate member that is rotatable around an axis different from the axis of the holder main body is interposed between the operation member and the adjustment member.
  • the operation member and the intermediate member are assembled to the holder body in various relative postures without being limited to the posture in which the shaft core is orthogonal to the direction along the axis of the holder body.
  • the adjusting member can be reciprocated in the direction along the axis of the holder body by the rotational force transmitted to the intermediate member. Therefore, with the tool holder of this configuration, the degree of freedom of the assembly position and assembly posture of the operation member with respect to the holder body is high, and the operation position and operation posture with respect to the operation member can be easily set according to the user's request.
  • Another feature of the present invention is that a gear portion that engages both the adjustment member and the operation member is provided on the outer peripheral portion of the intermediate member along the rotational circumferential direction.
  • Another characteristic configuration of the present invention is that a portion of the adjustment member that engages with the intermediate member is formed in a screw shape.
  • the portion of the adjustment member that engages with the intermediate member is configured in a screw shape, so that the adjustment member can be simply configured with a screw shaft, for example.
  • the screw-shaped part of the adjustment member only needs to reliably transmit the rotation of the intermediate member to the adjustment member. Even if the adjusting member rotates around its own axis by driving the intermediate member, it may be anything that can move in the axial direction. Therefore, a tool holder can be manufactured at low cost using a general screw member without using a member having a special structure such as a rack.
  • Another characteristic configuration of the present invention is that a portion of the operation member that engages with the intermediate member is configured in a screw shape.
  • the operation member can be simply configured with a screw shaft, for example. Since the intermediate member is configured, for example, as a gear, the tool holder can be manufactured at a low cost in the same manner as the adjusting member by using a screw member suitable for the gear.
  • FIG. 3 is a partial cross-sectional side view of a tool holder holding a tool.
  • FIG. 3 is an enlarged cross-sectional view of a tool holder.
  • FIG. 3 is a transverse sectional view of the tool holder.
  • FIG. 3 is a perspective view of an intermediate member.
  • the tool holder A includes a holder body 1 provided with a chuck portion (corresponding to a tool gripping portion) 1a for gripping and fixing the base portion of the drill B in a tip region, and a machine tool.
  • a taper shank portion 2 that is detachably attached to the spindle head is integrally provided with a coaxial core.
  • a positioning flange portion 3 is integrally formed with a coaxial core at the end on the large diameter side of the taper shank portion 2, and the holder body 1 is projected from the flange portion 3 toward the tip of the holder.
  • the holder body 1 abuts on the base end face of the drill B in the direction along the axis (hereinafter referred to as the holder axis) X of the holder body 1, and the protruding length of the drill B relative to the holder body 1, that is, the flange portion 3.
  • the tool position adjusting mechanism C reciprocates in the direction along the holder axis X inside the holder main body 1, and includes an adjusting member 4 having a contact surface 4 a that can contact the base end surface of the drill B, and the adjusting member 4.
  • An intermediate member 5 that can rotate around an intermediate axis Y different from the holder axis X while being in contact with the outer surface, and an operation member 6 that can be operated from the outside of the holder body 1 and that transmits a rotational force to the intermediate member 5.
  • the adjustment member 4 and the operation member 6 are configured by screw-like shaft members such as bolts in which the screw threads 4b and 6a are formed in a spiral shape.
  • the screw threads 4b and 6a in the adjustment member 4 and the operation member 6 are Each of them is provided as a portion that engages with the intermediate member 5.
  • the intermediate member 5 includes a gear portion 7 that engages with both the screw thread 4 b of the adjusting member 4 and the screw thread 6 a of the operation member 6 on the outer peripheral portion along the rotational circumferential direction. It is comprised with the shaft member.
  • the gear portion 7 is formed in a helical shape in which a plurality of tooth portions 7a are formed at a constant pitch in the circumferential direction with a lead angle.
  • the holder body 1 has an adjustment member holding hole 8 that holds the adjustment member 4 coaxially with the holder shaft X so as to be reciprocally movable, and an operation member 6 that is inclined with respect to the holder shaft X toward the tip of the holder.
  • An operation member holding hole 9 that is rotatably held around an operation axis Z that intersects with each other, and an intermediate member 5 around an intermediate axis Y that is orthogonal to the directions of the holder axis X and the operation axis Z
  • an intermediate member holding hole 10 that is rotatably held.
  • the adjustment member holding hole 8 is formed in the middle portion of the holder through hole 11 which is formed coaxially with the holder axis X over the entire length of the holder body 1 in a state where the diameter is smaller than the diameter of the front and rear hole portions.
  • the adjustment member 4 is held by the holder shaft X and the coaxial core so as to be reciprocally movable by sliding contact between the inner peripheral surface of the hole and the screw thread tip of the adjustment member 4.
  • the operation member holding hole 9 is formed by the same hole axis as the operation axis Z, and has a small diameter hole portion 9a that accommodates the operation member 6 so as to be rotatable by a coaxial core, and a ring that contacts the end surface of the operation member 6
  • a continuous collar 12a and a large-diameter hole 9b for holding the retaining ring C12b for the operating member 6 are formed in series.
  • the operation member 6 is rotatably held around the operation axis Z by sliding contact between the inner peripheral surface of the small-diameter hole 9a and the tip of the thread of the operation member 6, and the operation member 6 is placed on the collar 12a side.
  • a spherical elastic body 12c formed of elastic rubber or the like is mounted between the operation member 6 and the bottom surface of the small-diameter hole portion 9a with the operation axis Z and the coaxial core. It is.
  • the intermediate member holding hole 10 is formed with the same hole axis as the intermediate axis Y, and the intermediate member 5 is slidably brought into contact with the inner peripheral surface of the hole and the outer peripheral surface of the intermediate member 5. Is rotatably held around the intermediate axis Y.
  • the intermediate member holding hole 10 is formed in a state of being in communication with the operation member holding hole 9 and the adjustment member holding hole 8 so that the intermediate member 5 meshes with the operation member 6 and the adjustment member 4.
  • the intermediate member holding hole 10 is screwed with a stopper plug 13 that prevents the held intermediate member 5 from falling off.
  • the operation member 6 and the intermediate member 5 are configured such that the thread 6a meshes with the gear portion 7 in a posture in which the operation axis Z is orthogonal to the direction along the intermediate axis Y, and the intermediate member 5 and the adjustment member 4 are The gear portion 7 is engaged with the screw thread 4b in a posture in which the axis Y is orthogonal to the direction along the holder axis X.
  • a hexagonal hole 6b is formed on the end surface of the operation member 6, and the operation member 6 is rotated in the forward direction or the reverse direction by a rotary operation tool 14 such as a wrench engaged with the hexagonal hole 6b. Is driven to rotate, the contact surface 4a of the adjustment member 4 is moved in the direction of approaching or separating from the tip of the holder, and the projection length L of the drill B with respect to the holder body 1 is set to a desired length. it can.
  • the operation member 6 can be formed without changing the assembly position of the intermediate member 5 and the adjustment member 4 by changing the inclination angle of the operation axis Z with respect to the holder axis X to form the operation member holding hole 9.
  • the operation position and the operation posture with respect to can be changed variously. Note that when the adjustment member 4 moves along the holder axis X, the adjustment member 4 may move while rotating. Even when the adjustment member 4 rotates, the protrusion length L of the drill B can be sufficiently adjusted as long as it moves along the holder axis X.
  • a hydro chuck (not shown) that grips the base of the drill B with hydraulic pressure is provided in the chuck portion 1a. For this reason, when the gripping force of the drill B is increased by hydraulic operation, the drill B does not move in the direction along the holder axis X. Therefore, the protrusion length L of the drill B can be adjusted more easily and with high accuracy.
  • Hexagonal holes 4c and 4d are formed in the contact surface 4a of the adjusting member 4 and the end surface on the opposite side. Therefore, by rotating the adjusting member 4 directly with a rotary operation tool (not shown) such as a wrench engaged with the hexagonal hole 4c or the hexagonal hole 4d through the holder through-hole 11, the contact surface 4a is brought to the tip of the holder. It can also be moved directly in the direction of approaching or separating. In this case, when the adjustment member 4 is rotated, the thread 4b moves between the tooth portions 7a of the intermediate member 5, so that neither the intermediate member 5 nor the operation member 6 is rotated. For this reason, the operation resistance with respect to the adjustment member 4 decreases, and the adjustment member 4 can be moved easily.
  • a rotary operation tool such as a wrench engaged with the hexagonal hole 4c or the hexagonal hole 4d through the holder through-hole 11
  • the tool holder according to the present invention may include a grip portion having a structure including a tapered collet and a tightening nut. 2.
  • the intermediate member and the adjustment member may be linked using a rack and pinion. 3.
  • the tool holder by this invention may be used in order to fix the axial part of various tools other than the drill for drilling.

Abstract

操作部材に対する操作位置や操作姿勢をユーザの要望に応じて設定し易い工具ホルダを提供する。ホルダ本体（１）、工具（Ｂ）を固定する工具把持部（１ａ）、及び、ホルダ軸芯（Ｘ）に沿う方向において工具（Ｂ）の端部に当接し、ホルダ本体（１）に対する工具（Ｂ）の突出長さを決定する工具位置調節機構（Ｃ）を備え、工具位置調節機構（Ｃ）が、ホルダ本体（１）の内部においてホルダ軸芯（Ｘ）に沿う方向に往復移動し、工具（Ｂ）と当接可能な調整部材（４）と、調整部材（４）の外面に当接しつつホルダ軸芯（Ｘ）とは異なる軸芯（Ｙ）の周りに回転可能な中間部材（５）と、ホルダ本体（１）の外部から操作可能であり、中間部材（５）に回転力を伝達する操作部材（６）とを備えた。

Description

工具ホルダ
　本発明は、ホルダ本体と、前記ホルダ本体の先端領域に設けられ、工具を固定する工具把持部と、前記ホルダ本体の軸芯に沿う方向において前記工具の端部に当接し、前記ホルダ本体に対する前記工具の突出長さを決定する工具位置調節機構とを備えた工具ホルダに関する。
　特許文献１には、上記工具ホルダの従来技術が記載されている。
　この従来の工具ホルダが備える工具位置調節機構は、ホルダ本体の内部においてホルダ本体の軸芯に沿う方向に往復移動し、工具と当接可能な調整部材と、ホルダ本体の外部から操作可能であり、調整部材に回転力を直に伝達する操作部材とを備えている。
　すなわち、ウォーム歯を形成してある操作部材とハスバ歯を形成してある調整部材とを備え、操作部材と調整部材とをウォーム歯がハスバ歯に噛み合う姿勢でホルダ本体に組み付けてある。
実開昭６２－１７８０３２号公報
　上記工具ホルダにおいては、レンチなどの操作具や人の手による操作部材に対する操作位置や操作姿勢をユーザの要望に応じて設定してあることが望ましい。
　例えば、工具ホルダを工作機械に取り付けてから工具位置を微調節する必要がある場合には、操作部材に取り付けた操作具の操作位置や操作姿勢を、ユーザに特有の使用環境に応じて操作に支障が生じないように設定してあることが望ましい。
　従来の工具ホルダが備える工具位置調節機構は、ウォーム歯がハスバ歯に噛み合う姿勢、つまり、操作部材をその軸芯がホルダ本体の軸芯に沿う方向に対して直交する姿勢でホルダ本体に組み付けてある。
　このため、操作部材の操作時に支障が生じないように、例えば操作部材を把持部との相対位置を一定に維持したままホルダ前方側に寄せて組み付けると、ホルダ本体が大型化するおそれがある。
　本発明は上記実情に鑑みてなされたものであって、操作部材に対する操作位置や操作姿勢をユーザの要望に応じて設定し易い工具ホルダを提供することを目的とする。
　本発明による工具ホルダの特徴構成は、ホルダ本体と、前記ホルダ本体の先端領域に設けられ、工具を固定する工具把持部と、前記ホルダ本体の軸芯に沿う方向において前記工具の端部に当接し、前記ホルダ本体に対する前記工具の突出長さを決定する工具位置調節機構とを備え、前記工具位置調節機構が、前記ホルダ本体の内部において前記ホルダ本体の軸芯に沿う方向に往復移動し、前記工具と当接可能な調整部材と、前記調整部材の外面に当接しつつ前記ホルダ本体の軸芯とは異なる軸芯の周りに回転可能な中間部材と、前記ホルダ本体の外部から操作可能であり、前記中間部材に回転力を伝達する操作部材とを備えた点にある。
　本構成の工具ホルダは、工具位置調節機構が、ホルダ本体の内部においてホルダ本体の軸芯に沿う方向に往復移動し、工具と当接可能な調整部材と、調整部材の外面に当接しつつホルダ本体の軸芯とは異なる軸芯の周りに回転可能な中間部材と、ホルダ本体の外部から操作可能であり、中間部材に回転力を伝達する操作部材とを備えている。
　すなわち、操作部材と調整部材との間に、ホルダ本体の軸芯とは異なる軸芯の周りに回転可能な中間部材を介在させてある。
　このため、操作部材を軸芯がホルダ本体の軸芯に沿う方向に対して直交する姿勢に限ることなく、操作部材と中間部材とを様々な相対姿勢でホルダ本体に組み付けて、操作部材の操作によって中間部材に伝達した回転力で、調整部材をホルダ本体の軸芯に沿う方向に往復移動させることができる。
　したがって、本構成の工具ホルダであれば、操作部材のホルダ本体に対する組み付け位置や組み付け姿勢の自由度が高く、操作部材に対する操作位置や操作姿勢をユーザの要望に応じて設定し易い。
　本発明の他の特徴構成は、前記中間部材の回転周方向に沿う外周部に前記調整部材および前記操作部材の双方に係合するギア部を備えている点にある。
　本構成であれば、操作部材の操作力を、中間部材を介して調整部材に効率良く伝達することができる。
　本発明の他の特徴構成は、前記調整部材において前記中間部材と係合する部位をネジ状に構成してある点にある。
　本構成のように、調整部材の中間部材と係合する部位をネジ状に構成することで、調整部材を例えばネジ軸のようなもので簡易に構成することができる。
　調整部材のネジ状の部位は、中間部材の回転が調整部材に確実に伝達されればよい。仮に、中間部材の駆動によって調整部材が自身の軸芯周りに回転するものであっても、軸芯方向に移動できるものであればよい。
　よって、ラックのような特殊な構造の部材を用いることなく、一般的なネジ部材を用いて工具ホルダを安価に製造することができる。
　本発明の他の特徴構成は、前記操作部材において前記中間部材と係合する部位をネジ状に構成してある点にある。
　本構成のように、操作部材の中間部材と係合する部位をネジ状に構成することで、操作部材を例えばネジ軸のようなもので簡易に構成することができる。
　中間部材を例えばギアに構成してあるから、このギアに適合するネジ部材を用いることで、調整部材と同様に工具ホルダを安価に製造することができる。
は、工具を把持している工具ホルダの一部断面側面図である。 は、工具ホルダの拡大断面図である。 は、工具ホルダの横断面図である。 は、中間部材の斜視図である。
　以下に本発明の実施の形態を図面に基づいて説明する。
　図１～図４は、工具の一例としての穿孔用のドリルＢを保持する本発明による工具ホルダＡを示す。
　工具ホルダＡは、図１，図２に示すように、ドリルＢの基部を把持固定するチャック部（工具把持部に相当する。）１ａが先端領域に設けられたホルダ本体１と、工作機械の主軸ヘッドに着脱自在に装着されるテーパシャンク部２とを同軸芯で一体に備えている。
　テーパシャンク部２の大径側端部に位置決め用のフランジ部３を同軸芯で一体形成し、ホルダ本体１をフランジ部３からホルダ先端側に向けて突設してある。
　ホルダ本体１は、ホルダ本体１の軸芯（以下、ホルダ軸芯という。）Ｘに沿う方向においてドリルＢの基部端面に当接し、ホルダ本体１に対するドリルＢの突出長さ、つまり、フランジ部３の端面からのドリルＢの突出長さＬを決定する工具位置調節機構Ｃを備えている。
　工具位置調節機構Ｃは、ホルダ本体１の内部においてホルダ軸芯Ｘに沿う方向に往復移動し、ドリルＢの基部端面と当接可能な当接面４ａを有する調整部材４と、調整部材４の外面に当接しつつホルダ軸芯Ｘとは異なる中間軸芯Ｙの周りに回転可能な中間部材５と、ホルダ本体１の外部から操作可能であり、中間部材５に回転力を伝達する操作部材６とを備えている。
　調整部材４および操作部材６は、ネジ山４ｂ，６ａを螺旋状に形成してあるボルトなどのネジ状の軸部材で構成してあり、調整部材４および操作部材６におけるネジ山４ｂ，６ａの夫々を中間部材５と係合する部位として設けてある。
　中間部材５は、図３，図４にも示すように、回転周方向に沿う外周部に調整部材４のネジ山４ｂおよび操作部材６のネジ山６ａの双方に係合するギア部７を備えた軸部材で構成してある。
　ギア部７は、複数の歯部７ａをリード角を有する状態で周方向に一定ピッチで形成してあるハスバ歯状に形成してある。
　ホルダ本体１は、調整部材４をホルダ軸芯Ｘと同軸芯で往復移動自在に保持する調整部材保持孔８と、操作部材６をホルダ軸芯Ｘに対してホルダ先端側に向けて傾斜する状態で交差する操作軸芯Ｚの周りで回転操作自在に保持する操作部材保持孔９と、中間部材５をホルダ軸芯Ｘおよび操作軸芯Ｚの方向に対して直交する中間軸芯Ｙの周りで回転自在に保持する中間部材保持孔１０とを有する。
　調整部材保持孔８は、ホルダ本体１の全長に亘ってホルダ軸芯Ｘと同軸芯で貫通形成したホルダ貫通孔１１の途中部分に、前後の孔部分の孔径よりも縮径する状態で形成してあり、孔内周面と調整部材４のネジ山先端との摺接により、調整部材４をホルダ軸芯Ｘと同軸芯で往復移動自在に保持している。
　操作部材保持孔９は、操作軸芯Ｚと同じ孔軸芯で形成してあり、操作部材６を同軸芯で回転操作自在に収容する小径孔部９ａと、操作部材６の端面に当接するリング状のカラー１２ａおよび操作部材６の抜け止め用Ｃリング１２ｂを保持する大径孔部９ｂとを一連に形成してある。
　操作部材６は、小径孔部９ａの内周面と操作部材６のネジ山先端との摺接により操作軸芯Ｚの周りで回転自在に保持してあり、操作部材６をカラー１２ａの側に押し付けて操作部材６の回転操作を安定させるために、操作部材６と小径孔部９ａの底面との間に、弾性ゴムなどで形成した球状弾性体１２ｃを操作軸芯Ｚと同軸芯で装着してある。
　中間部材保持孔１０は、図３にも示すように、中間軸芯Ｙと同じ孔軸芯で形成してあり、孔内周面と中間部材５の外周面との摺接により、中間部材５を中間軸芯Ｙの周りで回転自在に保持している。
　中間部材保持孔１０は、中間部材５が操作部材６および調整部材４に噛み合うように、操作部材保持孔９および調整部材保持孔８に交わって連通する状態で形成してある。
　中間部材保持孔１０には、保持している中間部材５の外部への脱落を防止する止め栓１３を螺入してある。
　したがって、操作部材６と中間部材５は、操作軸芯Ｚが中間軸芯Ｙに沿う方向に対して直交する姿勢でネジ山６ａがギア部７に噛み合い、中間部材５と調整部材４は、中間軸芯Ｙがホルダ軸芯Ｘに沿う方向に対して直交する姿勢でギア部７がネジ山４ｂに噛み合っている。
　そして、操作部材６の端面に六角孔６ｂを形成し、この六角孔６ｂに係合させたレンチなどの回転操作具１４で操作部材６を正方向又は逆方向に回転させることにより、中間部材５が従動回転し、調整部材４の当接面４ａをホルダ先端に対して近接又は離間する方向に移動させて、ホルダ本体１に対するドリルＢの突出長さＬを所望の長さに設定することができる。
　したがって、例えば、操作軸芯Ｚのホルダ軸芯Ｘに対する傾斜角を変更して操作部材保持孔９を形成することにより、中間部材５および調整部材４の組み付け位置を変更することなく、操作部材６に対する操作位置や操作姿勢を種々に変更することができる。
　尚、調整部材４がホルダ軸芯Ｘに沿って移動する際に、調整部材４が自転しながら移動するものであってもよい。調整部材４が自転する場合でも、ホルダ軸芯Ｘに沿って移動するものであればドリルＢの突出長さＬの調節は十分可能である。
　本実施形態では、ドリルＢの基部を油圧で把持するハイドロチャック（図示せず）をチャック部１ａに設けてある。
　このため、ドリルＢの把持力を油圧操作によって高める際に、ドリルＢがホルダ軸芯Ｘに沿う方向に移動することはない。よって、ドリルＢの突出長さＬの調節をより簡便に高精度に行うことができる。
　調整部材４の当接面４ａ及びこの反対側の端面には六角孔４ｃ，４ｄを形成してある。
　したがって、ホルダ貫通孔１１を通して六角孔４ｃ又は六角孔４ｄに係合させたレンチなどの回転操作具（図示せず）で調整部材４を直に回転させることにより、当接面４ａをホルダ先端に対して近接又は離間する方向に直接的に移動させることもできる。
　この場合、調整部材４を回転させるとネジ山４ｂが中間部材５の歯部７ａの間を移動するので、中間部材５も操作部材６も回転しない。このため、調整部材４に対する操作抵抗が少なくなり、調整部材４を容易に移動させることができる。
〔その他の実施形態〕
１．本発明による工具ホルダは、テーパーコレットと締め付けナットとを有する構造の把持部を備えるものであってもよい。
２．本発明による工具ホルダは、中間部材と調整部材とがラック・アンド・ピニオンを用いて連係されていてもよい。
３．本発明による工具ホルダは、穿孔用ドリル以外の各種工具の軸部を固定するために用いるものであってもよい。
１　ホルダ本体
１ａ　工具把持部
４　調整部材
５　中間部材
６　操作部材
７　ギア部
Ｂ　工具
Ｃ　工具位置調節機構
Ｌ　突出長さ
Ｘ　ホルダ本体の軸芯
Ｙ　ホルダ本体の軸芯とは異なる軸芯

Claims (4)

  1. 　ホルダ本体と、
    　前記ホルダ本体の先端領域に設けられ、工具を固定する工具把持部と、
    　前記ホルダ本体の軸芯に沿う方向において前記工具の端部に当接し、前記ホルダ本体に対する前記工具の突出長さを決定する工具位置調節機構とを備え、
    　前記工具位置調節機構が、
    　前記ホルダ本体の内部において前記ホルダ本体の軸芯に沿う方向に往復移動し、前記工具と当接可能な調整部材と、
    　前記調整部材の外面に当接しつつ前記ホルダ本体の軸芯とは異なる軸芯の周りに回転可能な中間部材と、
    　前記ホルダ本体の外部から操作可能であり、前記中間部材に回転力を伝達する操作部材とを備えた工具ホルダ。
  2. 　前記中間部材の回転周方向に沿う外周部に前記調整部材および前記操作部材の双方に係合するギア部を備えている請求項１に記載の工具ホルダ。
  3. 　前記調整部材において前記中間部材と係合する部位をネジ状に構成してある請求項２に記載の工具ホルダ。
  4. 　前記操作部材において前記中間部材と係合する部位をネジ状に構成してある請求項２又は３に記載の工具ホルダ。
PCT/JP2014/056449 2014-03-12 2014-03-12 工具ホルダ WO2015136637A1 (ja)

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RU193801U1 (ru) * 2019-07-26 2019-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технологический университет "СТАНКИН" (ФГБОУ ВО "МГТУ "СТАНКИН") Устройство для регулировки осевого положения концевого инструмента
JP2022531503A (ja) * 2019-06-06 2022-07-06 ダブリュティーオー フェルモーゲンスファーヴァルタン ゲーエムベーハー 固定式及び駆動式工具ホルダの操作キー

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JP2007168003A (ja) * 2005-12-21 2007-07-05 Nikken Kosakusho Works Ltd 工具ホルダ
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Publication number Priority date Publication date Assignee Title
JP2022531503A (ja) * 2019-06-06 2022-07-06 ダブリュティーオー フェルモーゲンスファーヴァルタン ゲーエムベーハー 固定式及び駆動式工具ホルダの操作キー
JP7333831B2 (ja) 2019-06-06 2023-08-25 ダブリュティーオー フェルモーゲンスファーヴァルタン ゲーエムベーハー 固定式及び駆動式工具ホルダの操作キー
RU193801U1 (ru) * 2019-07-26 2019-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технологический университет "СТАНКИН" (ФГБОУ ВО "МГТУ "СТАНКИН") Устройство для регулировки осевого положения концевого инструмента

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