JP2018069360A - Axis connection adjusting mechanism - Google Patents
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- JP2018069360A JP2018069360A JP2016210196A JP2016210196A JP2018069360A JP 2018069360 A JP2018069360 A JP 2018069360A JP 2016210196 A JP2016210196 A JP 2016210196A JP 2016210196 A JP2016210196 A JP 2016210196A JP 2018069360 A JP2018069360 A JP 2018069360A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 17
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
Description
本発明は、主軸と主軸に接続する軸の連結を調整する軸連結調整機構に係り、特に工作機械や検査機械の主軸と工具またはセンサ等のツールに用いて好適な軸連結調整機構に関する。 The present invention relates to a shaft coupling adjusting mechanism that adjusts the coupling between a main shaft and a shaft connected to the main shaft, and more particularly to a shaft coupling adjusting mechanism suitable for use in a main shaft of a machine tool or an inspection machine and a tool such as a tool or a sensor.
従来の、工作機械においては、主軸側に設けたコレットチャックの中心空間に、ドリルやエンドミル等の工具または測定用プローブからなるツールの一端側を軸方向に挿入している。もしくは、ドリルチャックのように回転軸側の中心空間にツールの一端側を軸方向に挿入したのち、外周部を形成するチャック部を引っ掛けスパナ等の工具を用いて周方向に締めているのが一般的である。 In a conventional machine tool, one end side of a tool such as a drill or an end mill or a measurement probe is inserted in the axial direction into a central space of a collet chuck provided on the main shaft side. Or, after inserting one end of the tool in the axial direction into the central space on the rotating shaft side like a drill chuck, the chuck part forming the outer peripheral part is hooked and tightened in the circumferential direction using a tool such as a spanner. It is common.
加工機械に測定プローブを取り付けて加工状態を検査する検測工程では、スピンドルに対して芯出しがなされていた工具の代わりに、スピンドルに直接取り付けた場合には芯ずれが生じる恐れのあるプローブに取り換えるので、スピンドルとプローブ間の芯を調整する機構が必要となる。すなわち、検査精度の低下を防止するため、主軸と測定器軸の軸心を簡便な方法で、一致させる必要がある。 In the inspection process in which the measuring probe is attached to the processing machine and the machining state is inspected, instead of the tool that has been centered with respect to the spindle, a probe that may cause misalignment when attached directly to the spindle is used. Therefore, a mechanism for adjusting the core between the spindle and the probe is necessary. That is, in order to prevent a decrease in inspection accuracy, it is necessary to match the axes of the main axis and the measuring instrument axis by a simple method.
工作機械に工具を取り付ける際の芯ずれを解消する方法の例が、特許文献１に記載されている。この公報では、ドリル等のツールをシャンクに取り付けるために、工具とシャンクのいずれか一方に、半径方向に他方に対して力を作用させる作用手段を、工具とシャンクの他方に、上記半径方向の力により作動し、工具とシャンクを相互に締め付ける軸に平行な締め付け力を発生する作動手段を設けている。さらに、軸を横断する方向に工具とシャンクを整列する調節手段を、工具とシャンクのいずれかに設けている。 An example of a method for eliminating misalignment when a tool is attached to a machine tool is described in Patent Document 1. In this publication, in order to attach a tool such as a drill to a shank, an action means for applying a force to one of the tool and the shank against the other in the radial direction is provided on the other of the tool and the shank. Actuating means is provided which is actuated by force and generates a tightening force parallel to an axis for mutually tightening the tool and the shank. Further, adjusting means for aligning the tool and the shank in a direction transverse to the axis is provided on either the tool or the shank.
従来の加工機械に工具を取り付けるホルダーの他の例が、特許文献２に記載されている。この公報では、単純で、正確な芯合わせが可能な工具ホルダーを得るために、汎用のシャンクの他に、シャンクに対向配置される工具取付け用ホルダーを設け、シャンクと工具取付用ホルダーの対向面を軸に正確に垂直に加工するとともに、シャンクと工具取付け用ホルダーの外周面に遊嵌する取り付けリングを設け、取り付けリングの外周側に設けたねじ穴から先端が尖ったねじをねじ止めして、シャンクと工具取付け用ホルダーの軸に直角な２方向の相対位置を調整している。その際調整後の位置をしっかりと保持するために、シャンクの外周部にはＶ溝を形成する。 Another example of a holder for attaching a tool to a conventional processing machine is described in Patent Document 2. In this publication, in order to obtain a tool holder capable of simple and accurate alignment, in addition to a general-purpose shank, a tool mounting holder disposed opposite to the shank is provided, and the opposing surfaces of the shank and the tool mounting holder are provided. A mounting ring that fits on the outer periphery of the shank and tool mounting holder is provided, and a screw with a sharp tip is screwed into the screw hole provided on the outer periphery of the mounting ring. The relative position in two directions perpendicular to the axis of the shank and the tool mounting holder is adjusted. At that time, in order to hold the adjusted position firmly, a V-groove is formed on the outer periphery of the shank.
上記特許文献１に記載のツールとシャンクとを相互に締め付けるための連結装置では、工作機械側の主軸にテーパ嵌合するシャンクと、シャンクに取り付けたツールとの芯ずれを修正するために、シャンクを追加工している。具体的には、このツールまたは測定具の製作者側で、シャンク側にクランプエレメント保持用の構造を、使用するツールに応じて追加工している。一般的にシャンクは汎用品であり、多くの工作機械で共用できるが、この特許文献１によれば追加工を施す必要があるので、特定の機械の特定の工具または測定具専用となり、加工内容に応じてまたは測定内容に応じてシャンクを揃える必要が生じ、加工・測定現場での管理・手配の複雑さとシャンクのコスト増を招く恐れがある。 In the coupling device for mutually tightening the tool and the shank described in Patent Document 1, the shank is used to correct misalignment between the shank that is taper-fitted to the spindle on the machine tool side and the tool attached to the shank. Additional work is being done. Specifically, the manufacturer of this tool or measuring tool additionally processes a clamp element holding structure on the shank side according to the tool to be used. Generally, the shank is a general-purpose product and can be shared by many machine tools. However, according to this Patent Document 1, additional machining is required, so that it is dedicated to a specific tool or measuring tool of a specific machine. Therefore, it is necessary to prepare shanks according to the measurement contents or the contents of measurement, which may lead to complexity of management / arrangement at the processing / measurement site and an increase in the cost of the shanks.
特許文献２では、上述したように、工具専用のホルダーをシャンクとは別に設け、この工具ホルダーとシャンクとを軸方向に端面で対向させ、それらの対向部の外周側に遊嵌する取り付けリングを用いて芯合わせをしている。しかしながらこの芯合わせでは、工具ホルダーとシャンクとを軸方向に互いにゆるく配置して芯合わせの移動隙間を確保し、さらに取り付けリングを周方向に回動させながらシャンク溝に先端が尖ったねじを当接させ、最大変位位置で係止させるようにしている。そのため、シャンクに対する工具ホルダーの倒れをも考慮して軸の芯出し調整が必要であり、またトライ・アンド・エラーで最大変位位置を求めているので、芯出し調整に熟練を要するとともに、芯出し調整に時間がかかる恐れがある。なお、特許文献３には、テーパ部を用いて工具を確実に保持することが開示されているが、２軸の連結と連結した軸間の芯出し調整については考慮されていない。 In Patent Document 2, as described above, a holder dedicated to the tool is provided separately from the shank, the tool holder and the shank are opposed to each other at the end face in the axial direction, and an attachment ring that is loosely fitted to the outer peripheral side of these facing portions is provided. It is used for centering. However, in this alignment, the tool holder and the shank are arranged loosely in the axial direction to ensure a clearance for alignment, and the mounting ring is rotated in the circumferential direction and a sharpened screw is applied to the shank groove. They are touched and locked at the maximum displacement position. Therefore, it is necessary to adjust the centering of the shaft in consideration of the tilt of the tool holder with respect to the shank, and the maximum displacement position is obtained by trial and error. Adjustment may take time. Patent Document 3 discloses that the tool is securely held by using the tapered portion, but the centering adjustment between the two shafts connected and the connected shafts is not taken into consideration.
本発明は上記従来の技術の不具合に鑑み成されたものであり、その目的は工具やプローブからなるツールのツール軸とシャンクの軸心間に潜在的に存在する芯ずれを容易に調整できるようにすることにある。そしてその際、汎用のシャンクに特別な加工をせずに、簡単な調整装置を付加するだけで安価に構成できるようにすることにある。本発明の他の目的は、工具やプローブからなるツールのツール軸と工作機械の主軸に係合するシャンク軸との間の芯出しを短時間で容易に実施できるようにすることにある。 The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to be able to easily adjust a misalignment that exists potentially between the tool axis of a tool consisting of a tool or a probe and the axis of the shank. Is to make it. At that time, the general purpose shank is not specially processed, and a simple adjustment device can be added at low cost. Another object of the present invention is to enable easy centering between a tool axis of a tool including a tool and a probe and a shank axis engaged with a main axis of a machine tool in a short time.
上記目的を達成する本発明の特徴は、回転可能な第１の軸と、この第１の軸の先端部を嵌め合い保持する、作業具が取り付けられる第２の軸を備える軸連結調整機構において、前記第１の軸が前記第２の軸に接続する側の軸端部にボルトにより取り付けられた固定部材を有し、この固定部材に当接し、固定部材の前記第２の軸に対する軸方向位置及び軸方向に直交する方向の位置を調整可能にする調整手段を前記第２の軸に設けることにある。 A feature of the present invention that achieves the above object is a shaft coupling adjustment mechanism that includes a rotatable first shaft and a second shaft that fits and holds the tip of the first shaft and to which a work tool is attached. The first shaft has a fixing member attached to the shaft end on the side connected to the second shaft by a bolt, and abuts on the fixing member, and the axial direction of the fixing member relative to the second shaft The second shaft is provided with an adjusting means that makes it possible to adjust the position and the position in the direction orthogonal to the axial direction.
そしてこの特徴において、前記第１の軸は駆動機に取り付けられる被取付け軸であり、前記第２の軸は加工工具と計測用プローブの少なくともいずれかを取り付け可能なハウジングであり、前記固定部材の外形は、円筒面を実質的に周方向４等分位置または８等分位置で平面または曲面で切り落とした傾斜面を備えることが望ましく、前記調整手段は、前記固定部材の外形に形成した傾斜面に対応する前記ハウジングの周方向位置に、半径方向に貫通するねじ穴とこのねじ穴にねじ止めされるクランプねじを備えるのがよい。 In this feature, the first shaft is a mounted shaft attached to a driving machine, the second shaft is a housing to which at least one of a processing tool and a measurement probe can be attached, It is desirable that the outer shape includes an inclined surface obtained by cutting off the cylindrical surface by a plane or a curved surface substantially at a position in the circumferential direction of 4 or 8 and the adjusting means is an inclined surface formed on the outer shape of the fixing member. It is preferable to provide a screw hole penetrating in the radial direction and a clamp screw screwed into the screw hole at a circumferential position of the housing corresponding to the above.
また上記特徴において、前記ハウジングは前記被取付け軸に連結する側に凹部を有し、前記被取付け軸の先端部に取り付けた前記固定部材を前記ハウジングの凹部に隙間を持って嵌合し、前記クランプねじを前記傾斜面に当接させることにより、前記固定部材の底面と前記凹部の底面を当接させて芯合わせ可能にしてもよく、前記ハウジングは前記被取付け軸に連結する側に凹部を有し、前記被取付け軸の先端部に突起部を有し、前記被取付け軸の先端部に取り付けた前記固定部材を前記ハウジングの凹部に隙間を持って嵌合し、前記クランプねじを前記傾斜面に当接させることにより、前記固定部材の突起根本部平面と前記ハウジングの端面を軸方向に当接させて芯合わせ可能にしてもよい。 Further, in the above feature, the housing has a recess on a side to be connected to the mounted shaft, and the fixing member attached to the tip of the mounted shaft is fitted with a gap in the recess of the housing, The clamp screw may be brought into contact with the inclined surface so that the bottom surface of the fixing member and the bottom surface of the concave portion are brought into contact with each other so that the centering can be performed. The housing has a concave portion on the side connected to the mounted shaft. Having a protrusion at the tip of the mounted shaft, fitting the fixing member attached to the tip of the mounted shaft with a gap in the recess of the housing, and tilting the clamp screw By abutting on the surface, the projection root portion flat surface of the fixing member and the end surface of the housing may be axially abutted so as to be able to be aligned.
さらに、前記第１の軸は工作機械に用いるシャンクであり、前記第２の軸はこの工作機械に適合した加工工具または計測用プローブを取り付け可能な軸であってもよく、前記工作機械はマシニングセンタであり、前記軸連結調整機構は無線ボアゲージであってもよい。
さらに、前記第１の軸は工作機械に用いるシャンクであり、前記第２の軸はこの工作機械に適合した加工工具または計測用プローブを取り付け可能な軸であってもよく、前記工作機械はマシニングセンタであり、前記軸連結調整機構は無線タッチプローブであってもよい。
Further, the first axis may be a shank used for a machine tool, and the second axis may be an axis to which a machining tool or a measurement probe suitable for the machine tool can be attached, and the machine tool is a machining center. The shaft connection adjusting mechanism may be a wireless bore gauge.
Further, the first axis may be a shank used for a machine tool, and the second axis may be an axis to which a machining tool or a measurement probe suitable for the machine tool can be attached, and the machine tool is a machining center. The shaft coupling adjustment mechanism may be a wireless touch probe.
本発明によれば、シャンクを含む第１の軸とハウジングを含む第２の軸の軸心合わせが可能な軸連結調整機構が、第２の軸にこの第２の軸の半径方向外方から第１、第２の軸の相対位置を調整可能な調整手段を、第１の軸の先端に前記調整手段が当接する傾斜面を有する固定部材をそれぞれ設けたので、工具やプローブからなるツールを含む第２の軸と第１の軸心間に潜在的に存在する芯ずれを容易に調整できる。また、汎用のシャンクを特別な加工をしないで第１の軸とし、簡単な調整装置を付加するだけなので、安価に構成できる。さらに、工具やプローブからなるツールのツール軸（第２の軸）と工作機械の駆動源に係合するシャンク軸（第１の軸）との間の芯出しを短時間で容易に実施できる。 According to the present invention, the shaft coupling adjusting mechanism capable of aligning the first shaft including the shank and the second shaft including the housing is connected to the second shaft from the radially outer side of the second shaft. Since the adjusting means capable of adjusting the relative positions of the first and second shafts and the fixing member having the inclined surface with which the adjusting means abuts are provided at the tip of the first shaft, a tool comprising a tool or a probe is provided. The misalignment that exists potentially between the second axis and the first axis can be easily adjusted. In addition, a general-purpose shank is used as the first shaft without special processing, and a simple adjustment device is added, so that it can be constructed at low cost. Furthermore, centering between a tool axis (second axis) of a tool composed of a tool or a probe and a shank axis (first axis) engaged with a drive source of the machine tool can be easily performed in a short time.
以下、本発明に係る軸連結調整機構の実施例及び変形例を、図面を用いて説明する。以下の説明では、マシニングセンタやターニングマシン等の工作機械に用いられるツールホルダに関連して説明するが、本発明はこれに限らず、２つの軸の同心を調整する必要があるものに広く適用できる。 Hereinafter, embodiments and modifications of the shaft coupling adjusting mechanism according to the present invention will be described with reference to the drawings. In the following description, a description will be given in relation to a tool holder used in a machine tool such as a machining center or a turning machine, but the present invention is not limited to this, and the present invention can be widely applied to those that need to adjust the concentricity of two axes. .
初めに図７を参照する。図７は、マシニングセンタで使用する無線ボアゲージ（測定ヘッド）６５を含む軸連結調整機構１０２の一実施例を、一部断面正面図で示す。軸連結調整機構１０２は図示しないマシニングセンタの主軸に取り付けるツールホルダであるシャンク１５と、このシャンク１５に連結するハウジング２４を備える。シャンク１５の一部とハウジング２４の一部は、連結部５５を構成する。 Reference is first made to FIG. FIG. 7 is a partially sectional front view showing an embodiment of the shaft connection adjusting mechanism 102 including a wireless bore gauge (measuring head) 65 used in a machining center. The shaft connection adjusting mechanism 102 includes a shank 15 which is a tool holder attached to a main shaft of a machining center (not shown), and a housing 24 connected to the shank 15. A part of the shank 15 and a part of the housing 24 constitute a connecting portion 55.
シャンク１５は工作機械で使用される汎用シャンクであり、上半部は、工作機械で通常使用されるテーパ形状となっている。ハウジング２４は、ボアゲージを収容している。ハウジング２４の上部には、本発明の特徴的構成である、詳細を後述する固定具（固定部材とも称する）５０が収容されている。なお無線ボアゲージの一部をハウジングに収容する代わりに、ハウジング２４を無線ボアゲージの筐体としてもよい。 The shank 15 is a general-purpose shank used in machine tools, and the upper half has a tapered shape that is usually used in machine tools. The housing 24 accommodates a bore gauge. The upper part of the housing 24 accommodates a fixture (also referred to as a fixing member) 50, which will be described later in detail, which is a characteristic configuration of the present invention. Instead of housing a part of the wireless bore gauge in the housing, the housing 24 may be a housing for the wireless bore gauge.
無線ボアゲージは、内径測定時にこのボアゲージを被測定物の内部に挿入するためのガイド部６２を有し、ガイド部６２と連結部５５間に配置されたリリービング部またはフローティング部６１のいずれかまたは両方を有してもよい。ガイド部６２の先端部近傍には、周方向に間隔を置いて複数個（図では対称位置に２個）のコンタクト６３が配置されている。コンタクト６３は被測定物の内径加工位置に接触させてまたは非接触で内径を測定するのに用いる。 The wireless bore gauge has a guide part 62 for inserting the bore gauge into the object to be measured when measuring the inner diameter, and either the relieving part or the floating part 61 arranged between the guide part 62 and the connecting part 55 or You may have both. In the vicinity of the tip of the guide portion 62, a plurality of contacts (two in the symmetric position in the figure) are arranged at intervals in the circumferential direction. The contact 63 is used to measure the inner diameter in contact with or not in contact with the inner diameter machining position of the object to be measured.
次に、上記連結部５５の詳細を、図１ないし図６により説明する。図１は、本発明に係る軸連結調整機構の主要部（連結部５５）の縦断面図である。この実施例では、工作機械や検査機械等の駆動機に取り付けられる被取付け軸（第１の軸とも称す）１０は、円柱状の上部取り付け部１１１の下方に、末広がり部を経て軸長が短い円柱状の大径部１１５が設けられている。大径部１１５の下面の中央部に、下方に延びる突起部１１３が形成されている。突起部１１３の中央部には、固定具５０を取り付けるためのねじ穴部１１２が形成されている。突起部１１３に形成したねじ穴部１１２には、薄い頭部を有するボルト４０がネジ締結されている。ボルト４０は、固定具５０を突起部１１３の外周部に固定して取り付ける。 Next, details of the connecting portion 55 will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view of a main part (connecting part 55) of the shaft connection adjusting mechanism according to the present invention. In this embodiment, a mounted shaft (also referred to as a first shaft) 10 attached to a drive machine such as a machine tool or an inspection machine has a short shaft length below a columnar upper mounting portion 111 and a divergent portion. A cylindrical large-diameter portion 115 is provided. A protrusion 113 extending downward is formed at the center of the lower surface of the large diameter portion 115. A screw hole 112 for attaching the fixture 50 is formed at the center of the protrusion 113. A bolt 40 having a thin head is screwed into a screw hole 112 formed in the protrusion 113. The bolt 40 is attached by fixing the fixture 50 to the outer periphery of the protrusion 113.
ボルト４０で突起部１１３に固定される固定具５０の詳細を図３に示す。図３（ａ）は、固定具５０の上面斜視図であり、図３（ｂ）は固定具５０の正面図である。固定具５０はＳＫ材等の硬度が高い材料製である。固定具５０は、中実の上面５１２、底面５１３、周囲面（側面）５１１を有する円柱素材から形成され、ボルトを貫挿するボルト貫通穴５２５と被取付け軸１０の突起部１１３の外周部に嵌合する位置決め穴５２１が内部に形成されるとともに、外周部に周方向等角度位置に上面５１２から周囲面５１１へ斜めに切り落とした形状の面５０１〜５０４が形成されている。この図３の例では、斜めに切り落とした形状の面５０１〜５０４は、平面で切断されており、面形状は惰円の一部となる。なお切り落としの角度は水平面からの角度で、好ましくは３０°〜６０°である。また、切り落としの個数は、後述するように被取付け軸１０の軸に直交する２方向を調整できるように、対称位置を含む９０度ピッチすなわち等間隔に４個が最も好ましく、８個でもよい。対称位置を含む６個や１０個も可能であるが、４個や８個の場合に比べて調整に時間を要すると思われる。 Details of the fixture 50 fixed to the protrusion 113 by the bolt 40 are shown in FIG. FIG. 3A is a top perspective view of the fixture 50, and FIG. 3B is a front view of the fixture 50. The fixture 50 is made of a material having high hardness such as SK material. The fixture 50 is formed of a cylindrical material having a solid upper surface 512, a bottom surface 513, and a peripheral surface (side surface) 511, and is formed on the outer periphery of the bolt through hole 525 for inserting the bolt and the projection 113 of the mounted shaft 10. Positioning holes 521 to be fitted are formed inside, and surfaces 501 to 504 having shapes that are obliquely cut from the upper surface 512 to the peripheral surface 511 are formed in the outer peripheral portion at equiangular positions in the circumferential direction. In the example of FIG. 3, the surfaces 501 to 504 having a shape cut off obliquely are cut by a plane, and the surface shape becomes a part of an ellipse. In addition, the angle of cut-off is an angle from a horizontal plane, Preferably it is 30 degrees-60 degrees. Further, the number of cut-offs is most preferably four at 90-degree pitch including a symmetrical position, that is, at equal intervals so that two directions perpendicular to the axis of the mounted shaft 10 can be adjusted as will be described later, and may be eight. Although 6 or 10 including a symmetric position is possible, it seems that adjustment takes time compared with the case of 4 or 8.
図１に戻って、ハウジング部（第２の軸とも称す）２０には、計測用プローブ等のツール（図示せず）を保持する保持部２２１が下部に設けられており、その上部には大径部２２５がある。大径部２２５の中央部分には、円柱状の凹部形状の固定具収容部２２２が形成されている。固定具収容部２２２の深さは、被取付け軸１０の突起部１１３の軸方向長さより長い。 Returning to FIG. 1, the housing portion (also referred to as a second shaft) 20 is provided with a holding portion 221 for holding a tool (not shown) such as a measurement probe, and a large portion is provided above the holding portion 221. There is a diameter portion 225. A cylindrical recess-shaped fixing device accommodating portion 222 is formed at the central portion of the large diameter portion 225. The depth of the fixture housing portion 222 is longer than the axial length of the projection 113 of the mounted shaft 10.
保持部２２１に対応する位置であって大径部２２５の外周面２２９には（言い換えると、固定具５０の傾斜面に対応するハウジング２０の周方向位置には）、周方向等間隔位置に、複数の（本実施例では９０度ピッチで４個の）半径方向に向いた貫通ねじ穴２１１〜２１４が形成されている。このねじ穴２１１〜２１４には、クランプねじ２０１〜２０４がねじ止め可能である。クランプねじ２０１〜２０４は、ねじが切られたねじ部２４１〜２４４の先端部に、球が埋め込まれた形の当接部２５１〜２５４を有する。当接部２５１〜２５４は、固定具５０の傾斜面５０１〜５０４に当接するので、固定具５０よりは硬度の低い材料で製作される。 At a position corresponding to the holding portion 221 and on the outer peripheral surface 229 of the large diameter portion 225 (in other words, at the circumferential position of the housing 20 corresponding to the inclined surface of the fixture 50), A plurality of (four in this embodiment, 90 pitches) radial threading holes 211 to 214 facing in the radial direction are formed. Clamp screws 201 to 204 can be screwed into the screw holes 211 to 214. The clamp screws 201 to 204 have contact portions 251 to 254 in which spheres are embedded at the distal ends of the threaded screw portions 241 to 244. Since the abutting portions 251 to 254 abut against the inclined surfaces 501 to 504 of the fixture 50, the abutting portions 251 to 254 are made of a material having a lower hardness than the fixture 50.
以上のように構成した本実施例の軸連結調整機構１００による、第１の軸（被取付け軸）１０と第２の軸（ハウジング）２０の芯合わせについて説明する。初めに第１の軸１０の突起部１１３に固定具５０を取り付ける。その際、突起部１１３の外径と固定具５０の位置決め穴５２１（図３）を嵌合させる。これらは僅かな取付け隙間を有する隙間嵌めになっている。次に、ボルト４０を固定具５０のボルト貫通穴５２５（図３）を通って突起部１１３に形成したねじ穴部１１２にねじ止めする。これにより第１の軸１０と固定具５０は、相対位置を変化させることなく固定される（第１のステップ）。なお、固定具５０の傾斜面５０１〜５０４の周方向位置が明確になるようなマークを、取付け部１１１または大径部１１５の対応する位置に設けることが好ましい。このマークは、突起部根本面１２１に形成した径方向に延びる突起等でもよい。 The alignment of the first shaft (attached shaft) 10 and the second shaft (housing) 20 by the shaft connection adjusting mechanism 100 of the present embodiment configured as described above will be described. First, the fixture 50 is attached to the protrusion 113 of the first shaft 10. At that time, the outer diameter of the protrusion 113 and the positioning hole 521 (FIG. 3) of the fixture 50 are fitted. These are gap fits with a slight mounting gap. Next, the bolt 40 is screwed into the screw hole 112 formed in the protrusion 113 through the bolt through hole 525 (FIG. 3) of the fixture 50. Thereby, the 1st axis | shaft 10 and the fixing tool 50 are fixed, without changing a relative position (1st step). In addition, it is preferable to provide the mark which makes the circumferential direction position of the inclined surfaces 501-504 of the fixing tool 50 clear in the corresponding position of the attachment part 111 or the large diameter part 115. This mark may be a protrusion formed on the protrusion root surface 121 and extending in the radial direction.
一方、第２の軸（ハウジング）２０の大径部２２５の外周面２２９に形成したねじ穴２１１〜２１４に、クランプねじ２０１〜２０４をねじ込む。その際クランプねじ２０１〜２０４の当接部２５１〜２５４が固定具収容部２２２の内周面２３０から内側に出ていないよう、ねじ穴２１１〜２１４内に収めておく。次に、この第２の軸２０を第１の軸１０の下方から上昇させて接近させ、または第１の軸１０を第２の軸２０の上方から下して接近させ、固定具５０が取り付けられた第１の軸１０の突起部１１３を第２の軸２０の固定具収容部２２２内に嵌合する。その際、クランプねじ穴２１１〜２１４が固定具５０の傾斜面５０１〜５０４（図３）に対応する位置にあるよう、２つの軸１０、２０の相対周方向位置を合わせる（第２のステップ）。ここで、固定具の周囲面５１１（図３）と第２の軸の固定具収容部の内周面２３０の間には、第１の軸１０と第２の軸２０の取り付け誤差を修正できるだけの隙間がある。言い換えれば、周囲面５１１と内周面２３０の間には相当の誤差があるので、単に第１の軸１０を第２の軸２０に組み合わせただけでは２本の軸１０、２０間には芯ずれが生じているのが一般的である。 On the other hand, the clamp screws 201 to 204 are screwed into the screw holes 211 to 214 formed in the outer peripheral surface 229 of the large diameter portion 225 of the second shaft (housing) 20. At that time, the abutting portions 251 to 254 of the clamp screws 201 to 204 are stored in the screw holes 211 to 214 so that they do not protrude inward from the inner peripheral surface 230 of the fixture housing portion 222. Next, the second shaft 20 is moved up from below the first shaft 10 to approach, or the first shaft 10 is moved down from above the second shaft 20 to approach, and the fixture 50 is attached. The protrusion 113 of the first shaft 10 thus fitted is fitted into the fixture housing portion 222 of the second shaft 20. At that time, the relative circumferential positions of the two shafts 10 and 20 are adjusted so that the clamp screw holes 211 to 214 are at positions corresponding to the inclined surfaces 501 to 504 (FIG. 3) of the fixture 50 (second step). . Here, a mounting error between the first shaft 10 and the second shaft 20 can be corrected between the peripheral surface 511 of the fixture (FIG. 3) and the inner peripheral surface 230 of the fixture housing portion of the second shaft. There is a gap. In other words, there is a considerable error between the peripheral surface 511 and the inner peripheral surface 230, so that if the first shaft 10 is simply combined with the second shaft 20, there is no core between the two shafts 10, 20. In general, there is a shift.
また、固定具の傾斜面５０１〜５０４（図３）は、平面で切り落とした形状であるので、第１の軸１０を周方向に回転させると、半径方向長さが変化する。したがって、クランプねじ２０１〜２０４を傾斜面５０１〜５０４（図３）に当接させる場合、最もねじ込み量が大きくなる位置が理論的に傾斜面５０１〜５０４に正対する周方向位置となる。さらに一旦クランプねじ２０１〜２０４が傾斜面５０１〜５０４に当接すると、最もねじ込み量が多い位置で傾斜面５０１〜５０４（図３）に当接しているのであれば、第１の軸１０はクランプねじ２０１〜２０４に対して周方向に相対位置を変化させることが不可能である。したがって、確実に第１の軸１０と第２の軸２０を連結できる。これに対して、傾斜面５０１〜５０４が円錐面等であれば、正対位置から離れるにつれて押し込み量が増していき、クランプねじ２０１〜２０４を第１の軸１０に対して周方向に位置決めできない。 In addition, since the inclined surfaces 501 to 504 (FIG. 3) of the fixture have a shape cut off by a plane, the length in the radial direction changes when the first shaft 10 is rotated in the circumferential direction. Therefore, when the clamp screws 201 to 204 are brought into contact with the inclined surfaces 501 to 504 (FIG. 3), the position where the screwing amount is the largest is theoretically the circumferential position directly facing the inclined surfaces 501 to 504. Further, once the clamp screws 201 to 204 are in contact with the inclined surfaces 501 to 504, the first shaft 10 is clamped if it is in contact with the inclined surfaces 501 to 504 (FIG. 3) at the position where the screwing amount is the largest. It is impossible to change the relative position in the circumferential direction with respect to the screws 201 to 204. Therefore, the 1st axis | shaft 10 and the 2nd axis | shaft 20 can be connected reliably. On the other hand, if the inclined surfaces 501 to 504 are conical surfaces or the like, the pushing amount increases as the distance from the facing position increases, and the clamp screws 201 to 204 cannot be positioned in the circumferential direction with respect to the first shaft 10. .
芯調整の詳細を、図５及び図６を用いて説明する。図５（ａ）は連結部５５を構成する第１の軸１０の突起部根本面１２１で切断した連結部５５の上面斜視図である。図５（ｂ）は、調整方向Ｐ−Ｏ−Ｐ線上にある２個のクランプねじ２０１、２０３を用いてＰ−Ｏ−Ｐ方向の芯ずれ量を調整することを示す縦断面図であり、図５（ｃ）はＰ−Ｏ−Ｐ線に直交する線Ｑ−Ｏ−Ｑ線上にある２個のクランプねじ２０２、２０４を傾斜面５０２、５０４に係止させない状態を示す縦断面図である。 Details of the lead adjustment will be described with reference to FIGS. 5 and 6. FIG. 5A is a top perspective view of the connecting portion 55 taken along the protrusion root surface 121 of the first shaft 10 constituting the connecting portion 55. FIG.5 (b) is a longitudinal cross-sectional view which shows adjusting the amount of center shift | offset | difference of a POP direction using the two clamp screws 201 and 203 which exist on an adjustment direction POP line, FIG. 5C is a longitudinal sectional view showing a state where the two clamp screws 202 and 204 on the line QOQ line orthogonal to the POP line are not locked to the inclined surfaces 502 and 504. .
初めに第２の軸２０と第１の軸１０の連結が解けて互いに脱落するのを防止するため、各クランプねじ２０１〜２０４を固定具５０の対応する傾斜面５０１〜５０４に当接部２５１〜２５４で仮止め程度の力で当接させる。その際、当接部２５１〜２５４の硬度が固定具５０の硬度よりも低いので、この当接により固定具５０が損傷することはない。この状態で、第２の軸２０の先端部近傍（図７の例ではコンタクト近傍）にダイヤルゲージ等の振れ測定器を取り付ける。 First, in order to prevent the second shaft 20 and the first shaft 10 from being disconnected and falling off, the clamp screws 201 to 204 are brought into contact with the corresponding inclined surfaces 501 to 504 of the fixture 50. It makes it contact | abut with the force of about a temporary fix at -254. At that time, since the hardness of the contact portions 251 to 254 is lower than the hardness of the fixture 50, the fixture 50 is not damaged by this contact. In this state, a shake measuring instrument such as a dial gauge is attached in the vicinity of the tip of the second shaft 20 (in the vicinity of the contact in the example of FIG. 7).
次に調整する側のクランプねじ、すなわちＰ−Ｏ−Ｐ線上に位置し、周方向に１８０°対称位置にある２個のクランプねじ２０１、２０３により、Ｐ−Ｏ−Ｐ線方向の芯出しをする。第１の軸１０側を回動させ、第２の軸２０の振れを観察する。振れが最小になるよう２個のクランプねじ２０１、２０３のねじ込み量を調整する。Ｐ−Ｏ−Ｐ線上の振れ調整量が定まったら、同様の手順でＰ−Ｏ−Ｐ線に直交するＱ−Ｏ−Ｑ線方向の調整をする（第３のステップ）。Ｐ−Ｏ−Ｐ線の方向の位置は定まっているので、クランプねじ２０１、２０３は傾斜面５０１、５０３に当接させたまま実行可能である。最後に振れを確認しながら増し締めする。いずれにしても調整時間を少なくできる方法を用いる。 Next, centering in the POP line direction is performed by the clamp screw on the adjusting side, that is, the two clamp screws 201 and 203 which are located on the POP line and are 180 ° symmetrical in the circumferential direction. To do. The first shaft 10 side is rotated, and the shake of the second shaft 20 is observed. The screwing amounts of the two clamp screws 201 and 203 are adjusted so that the deflection is minimized. When the amount of shake adjustment on the POPP line is determined, the QOQ line direction orthogonal to the POPP line is adjusted in the same procedure (third step). Since the position in the direction of the POP line is fixed, the clamp screws 201 and 203 can be executed while being in contact with the inclined surfaces 501 and 503. Finally, retighten while checking the runout. In any case, a method that can reduce the adjustment time is used.
位置調整中の、各クランプねじ２０１〜２０４により２本の軸１０、２０に発生する締結力を、図６を用いて説明する。図６は、図５（ｂ）の状態における力の発生状態を、模式的に示す図である。クランプねじ２０１、２０３をねじ込むと固定具５０の傾斜面５０１、５０３にそれぞれ当接する。その際ねじ込によりクランプねじ２０１、２０３の当接部２５１、２５３には各クランプねじ２０１、２０３の軸方向に力ｆが発生する。今単純化するため、左右のクランプねじ２０１、２０３が発生する力は同じとしている。 The fastening force generated in the two shafts 10 and 20 by the clamp screws 201 to 204 during the position adjustment will be described with reference to FIG. FIG. 6 is a diagram schematically illustrating a force generation state in the state of FIG. When the clamp screws 201 and 203 are screwed in, they abut against the inclined surfaces 501 and 503 of the fixture 50, respectively. At that time, a force f is generated in the axial direction of the clamp screws 201 and 203 at the contact portions 251 and 253 of the clamp screws 201 and 203 by screwing. For simplification now, the forces generated by the left and right clamp screws 201 and 203 are the same.
当接部２５１、２５３から傾斜面５０１、５０３に力が加わるが、傾斜面５０１、５０３は登坂面になっているので、クランプねじ２０１、２０３から加えられた力は固定具５０を下方へ押しやるように作用する。したがって、傾斜面５０１、５０３には垂直方向分力ｆＮ、接線方向分力ｆＴが働き、結果として軸方向分力ｆａが作用する。すべてのクランプねじ２０１〜２０４による垂直方向分力の和Ｆが、固定具５０を含む第１の軸１０に下向きに加わる。この力Ｆは、第１の軸１０の突起部１１３回りの部分、すなわち突起部根本面１２１で下向きの分布荷重ｑとして作用する。一方第２の軸２０にはこの分布荷重ｑの反作用として上向きの分布荷重ｑが発生する。したがって、２本の軸１０、２０は、クランプねじ２０１〜２０４を固定具の対応する傾斜面５０１〜５０４に当接させることにより、芯合わせをしながら、そのねじ込み力で突起部根本面１２１と第２の軸２０の上面２２３をそれぞれ基準面として連結し合う。 A force is applied to the inclined surfaces 501 and 503 from the contact portions 251 and 253, but the inclined surfaces 501 and 503 are climbing surfaces, so that the force applied from the clamp screws 201 and 203 pushes the fixture 50 downward. Acts as follows. Accordingly, the vertical component force f N and the tangential component force f T act on the inclined surfaces 501, 503, and as a result, the axial component force fa acts. A sum F of vertical component forces by all the clamp screws 201 to 204 is applied downward to the first shaft 10 including the fixture 50. This force F acts as a downward distributed load q on the portion around the protrusion 113 of the first shaft 10, that is, on the protrusion root surface 121. On the other hand, an upward distributed load q is generated on the second shaft 20 as a reaction of the distributed load q. Therefore, the two shafts 10 and 20 are brought into contact with the inclined surfaces 501 to 504 corresponding to the fixtures by bringing the clamp screws 201 to 204 into contact with the protrusion root surface 121 with the screwing force while aligning the cores. The upper surfaces 223 of the second shafts 20 are connected to each other as reference surfaces.
この連結を達成するため、ボルト４０と固定具５０を含む突起部１１３の軸長を、第２の軸２０の固定具収容部２２２の深さより短くしている。これにより、突起部根本面１２１と第２の軸２０の上面２２３が当接する前に、固定具５０の底面５１３（図３）またはボルト４０（図１）の頭部が、固定具収容部の底面２２７（図１）に当接するのを回避している。 In order to achieve this connection, the axial length of the protrusion 113 including the bolt 40 and the fixture 50 is made shorter than the depth of the fixture accommodating portion 222 of the second shaft 20. Thereby, before the protrusion root surface 121 and the upper surface 223 of the second shaft 20 abut, the bottom surface 513 (FIG. 3) of the fixture 50 or the head of the bolt 40 (FIG. 1) Contact with the bottom surface 227 (FIG. 1) is avoided.
次に図１の連結部の変形例を図２に示す。本連結部５６が上記連結部と異なるのは、第１の軸１０が、第２の軸２０の上面に当接する突起部根本面１２１を有していないことにある。つまり、第１の軸１０は取付け部１１１の外径がそのまま軸端まで及んでおり、その軸端部には固定具５０を取り付けるためのねじ穴部１１２が形成されている。固定具５０の位置決め穴５２１（図３）に第１の軸１０の軸端部が当接している。第２の軸２０は、上記実施例と同じである。第１、第２の軸１０、２０の芯合わせは、図１に示した実施例と同様に、上記第１のステップから第３のステップを実行することで達成される。 Next, a modification of the connecting portion of FIG. 1 is shown in FIG. The main connecting portion 56 is different from the above connecting portion in that the first shaft 10 does not have the protrusion root surface 121 that comes into contact with the upper surface of the second shaft 20. That is, in the first shaft 10, the outer diameter of the mounting portion 111 reaches the shaft end as it is, and a screw hole portion 112 for mounting the fixture 50 is formed at the shaft end portion. The shaft end of the first shaft 10 is in contact with the positioning hole 521 (FIG. 3) of the fixture 50. The second shaft 20 is the same as in the above embodiment. The alignment of the first and second shafts 10 and 20 is achieved by executing the first step to the third step as in the embodiment shown in FIG.
ただしこの変形例では突起部根本面がないため、クランプねじ２０１〜２０４をねじ込んでも第２の軸２０の上面２２８に作用する力は発生しない。図６を参照すると、クランプねじ２０１〜２０４をねじ込むことにより固定具５０の傾斜面５０１〜５０４で当接力ｆが発生し、この力の軸方向分力ｆａが集まって、全体としてボルト４０、固定具５０を含む第１の軸１０にＦとして下向きに作用し、主として固定具５０の底面５１３（図３）に分布荷重ｑ１が発生する。一方第２の軸２０は、クランプねじ２０１〜２０４を介して第１の軸１０に固定した固定具５０に当接しているから、クランプねじ２０１〜２０４が締め込まれると固定具５０の傾斜面５０１〜５０４に沿って上方に動くように動作する。その結果として固定具収容部２２２の底面２２４には、上向きの反力ｑ１が発生し、第１、第２の軸１０、２０は、芯調整されながら、固定具５０の底面５１３と固定具収容部の底面２２４をそれぞれ基準面として連結し合う。 However, in this modification, since there is no root surface of the protrusion, even if the clamp screws 201 to 204 are screwed in, no force acting on the upper surface 228 of the second shaft 20 is generated. Referring to FIG. 6, when the clamp screws 201 to 204 are screwed in, an abutting force f is generated on the inclined surfaces 501 to 504 of the fixture 50, and the axial component force fa of this force is gathered to Acting downward as F on the first shaft 10 including the tool 50, a distributed load q 1 is generated mainly on the bottom surface 513 (FIG. 3) of the fixture 50. On the other hand, since the second shaft 20 is in contact with the fixture 50 fixed to the first shaft 10 via the clamp screws 201 to 204, the inclined surface of the fixture 50 when the clamp screws 201 to 204 are tightened. It operates to move upward along the lines 501 to 504. As a result, an upward reaction force q 1 is generated on the bottom surface 224 of the fixture housing portion 222, and the first and second shafts 10 and 20 are adjusted in the center while the bottom surface 513 of the fixture 50 and the fixture. The bottom surfaces 224 of the accommodating portions are connected to each other as a reference surface.
次に図４に、図７に示した軸連結調整機構１０２の連結部５５の詳細を、断面図で示す。汎用の工作機械取付け用シャンク１５には、中央部に貫通穴１１６が形成されており、その下端部にはねじ穴部１１２が形成されている。この汎用のシャンク１５をそのまま使用するようにして、シャンク１５に合わせて固定具５０及びハウジング２５を作製する。ハウジング２５は図１に示したものと同一の連結部構造を有している。したがって、ハウジング２５の外周面２２９に形成したねじ穴２１１〜２１４にクランプねじ２０１〜２０４をねじ込むことにより、固定具５０の傾斜面５０１〜５０４にクランプねじ２０１〜２０４が当接し、シャンク１５に下向きの力を加える。これによりシャンク１５の基準面１２１とハウジング２５の基準面２２３が当接し、互いに連結し合う。 Next, FIG. 4 is a sectional view showing details of the connecting portion 55 of the shaft connection adjusting mechanism 102 shown in FIG. The general-purpose machine tool mounting shank 15 is formed with a through hole 116 at the center and a screw hole 112 at the lower end thereof. The general-purpose shank 15 is used as it is, and the fixture 50 and the housing 25 are manufactured according to the shank 15. The housing 25 has the same connecting portion structure as that shown in FIG. Therefore, when the clamp screws 201 to 204 are screwed into the screw holes 211 to 214 formed in the outer peripheral surface 229 of the housing 25, the clamp screws 201 to 204 come into contact with the inclined surfaces 501 to 504 of the fixture 50, and face downward to the shank 15. Apply the power of. As a result, the reference surface 121 of the shank 15 and the reference surface 223 of the housing 25 come into contact with each other and are connected to each other.
本発明の連結部５５の他の実施例を、図８に示す。図８が上記実施例と異なるのは、固定具５１の切り落とし面を平面ではなく、曲面としたことにある。なお、この図８に示した連結部５５は、図４に示した軸連結調整機構１０２の連結部である。図８（ａ）は、連結部５５の縦断面図であり、図８（ｂ）はそれに用いる固定具５１の斜視図、図８（ｃ）は固定具５１の正面図である。 Another embodiment of the connecting portion 55 of the present invention is shown in FIG. FIG. 8 differs from the above embodiment in that the cut-off surface of the fixture 51 is not a flat surface but a curved surface. The connecting portion 55 shown in FIG. 8 is a connecting portion of the shaft connection adjusting mechanism 102 shown in FIG. 8A is a longitudinal sectional view of the connecting portion 55, FIG. 8B is a perspective view of the fixture 51 used therefor, and FIG. 8C is a front view of the fixture 51. FIG.
図８（ｃ）で最もよく分かるように、固定具５１の上面５１２から周囲面５１１にかけて斜めに形成した切り落とし面である傾斜面５３１〜５３４は、もはや平面ではなく下に凸の曲面となっている。この傾斜面５３１〜５３４は、固定具５１の軸線を含む垂直面に対して対称形となっているので、その面を含む周方向位置でクランプねじ２０１〜２０４との当接距離（固定具５１の中心線からクランプねじ２０１〜２０４の当接部２５１〜２５４までの距離）が最小となる。したがってクランプねじに対して一番凹んだ位置で固定具５１がクランプねじでハウジング２５に係止するので、加工や計測中にシャンク１５とハウジング２５の周方向が相対変位するのを防止できる。 As can best be seen in FIG. 8C, the inclined surfaces 531 to 534 which are cut-off surfaces formed obliquely from the upper surface 512 of the fixture 51 to the peripheral surface 511 are no longer flat surfaces but curved downwards. Yes. Since the inclined surfaces 531 to 534 are symmetrical with respect to the vertical plane including the axis of the fixture 51, the contact distance between the clamp screws 201 to 204 at the circumferential position including the surface (fixture 51). The distance from the center line to the contact portions 251 to 254 of the clamp screws 201 to 204 is minimized. Therefore, since the fixing tool 51 is locked to the housing 25 by the clamp screw at the most recessed position with respect to the clamp screw, it is possible to prevent relative displacement of the circumferential direction of the shank 15 and the housing 25 during processing and measurement.
なお、平面で切り落とした図１に示す実施例の固定具５０に比べ、本変形例の固定具５１は図８（ｃ）の正面図における、左右端部形状から明らかなようにその線長、換言すればクランプねじ２０１〜２０４との接触可能範囲が長いので、シャンク１５とハウジング２５の芯合わせ範囲を増大できる。またクランプねじ２０１〜２０４の当接部２５１〜２５４は球形の一部または半球形であるので、平面の傾斜面５０１〜５０４では理論的には点接触で接触面積が小さく、局所応力が増大する。しかし本変形例の場合には、理論的に点接触ではない接触形状となる曲面を選定することができ、当接部２５１〜２５４の弾性変形等を考慮した実際の局所応力を大幅に低減できる。さらに、クランプねじ２０１〜２０４の当接部２５１〜２５４を、傾斜面５０１〜５０４の２方向に曲率を持つボウル状面で当接させるので、クランプねじ２０１〜２０４のねじ込み量の変化により傾斜面５０１〜５０４への接触角が変化し、より軟らかい材料の当接部２５１〜２５４の偏摩耗を低減できる。さらにまた、クランプねじ２０１〜２０４のねじ込み量と傾斜面の当接部の半径方向位置が直線的に変化せず、初めのねじ込み時には傾斜面の半径方向位置が大きく変化し、徐々に傾斜面の半径方向位置が減少するので、粗調整と微調整を使い分けることができ、芯合わせ時間を短縮できる。あるいは、芯合わせ時に仮止め状態から仕上げ締めに移る際の軸心の変位量を微小量にすることができ、精度の良い芯合わせを実現できる。 In addition, compared with the fixture 50 of the embodiment shown in FIG. 1 cut off in a plane, the fixture 51 of this modification example has its line length as apparent from the left and right end shapes in the front view of FIG. In other words, since the contactable range with the clamp screws 201 to 204 is long, the centering range of the shank 15 and the housing 25 can be increased. In addition, since the abutting portions 251 to 254 of the clamp screws 201 to 204 are partly spherical or hemispherical, the flat inclined surfaces 501 to 504 theoretically have a small contact area due to point contact and increase local stress. . However, in the case of this modification, it is possible to select a curved surface that is theoretically a contact shape that is not a point contact, and the actual local stress considering the elastic deformation of the contact portions 251 to 254 can be greatly reduced. . Furthermore, since the abutting portions 251 to 254 of the clamp screws 201 to 204 are brought into contact with a bowl-shaped surface having a curvature in two directions of the inclined surfaces 501 to 504, the inclined surface is changed by a change in the screwing amount of the clamp screws 201 to 204. The contact angle to 501 to 504 changes, and uneven wear of the contact portions 251 to 254 made of a softer material can be reduced. Furthermore, the screwing amount of the clamp screws 201 to 204 and the radial position of the abutting portion of the inclined surface do not change linearly, and the radial position of the inclined surface changes greatly at the first screwing, and the inclined surface gradually changes. Since the radial position decreases, coarse adjustment and fine adjustment can be used properly, and the alignment time can be shortened. Alternatively, the amount of displacement of the shaft center when shifting from the temporarily fixed state to the finish tightening at the time of centering can be set to a minute amount, and accurate centering can be realized.
以上述べたように本発明の実施例及び変形例によれば、第１の軸に種方向複数個所に傾斜面を持つ固定具を取り付け、第２の軸にこの固定具を収容する収容部を設け、第２の軸のクランプねじを傾斜部に当接させたので、ねじ締め付け力が傾斜面を通して第１の軸に第２の軸の向きの力を発生する。これにより第１の軸と第２の軸が相対的に静止状態で連結し合う。または傾斜面を通して固定具を第２の軸に押し付ける力が発生し、第１、第２の軸が連結し合う。 As described above, according to the embodiment and the modification of the present invention, the first shaft is provided with a fixture having inclined surfaces at a plurality of locations in the seed direction, and the second shaft is provided with a receiving portion for receiving the fixture. Since the clamp screw of the second shaft is brought into contact with the inclined portion, the screw tightening force generates a force in the direction of the second shaft on the first shaft through the inclined surface. As a result, the first shaft and the second shaft are connected relatively in a stationary state. Or the force which presses a fixing tool to a 2nd axis | shaft through an inclined surface generate | occur | produces, and the 1st, 2nd axis | shaft connects.
また、上記実施例及び変形例によれば、軸に直交する２方向の調整において、調整側のクランプねじを押し込む際に、調整しない側のクランプねじをわずかに緩める。その際、調整しない側の固定具の傾斜面が平面または周方向に凹んだ曲面となっているので、第１、第２の軸間に調整軸方向の相対変位があっても、調整しない側のクランプねじと傾斜面が必ず当接するので、第１の軸と第２の軸の連結が解除されるのを防止できる。したがって調整中に、調整する側のクランプねじが傾斜面から外れても、第２の軸または第１の軸の落下を防止できる。 Moreover, according to the said Example and modification, when pushing in the clamp screw by the side of adjustment in two directions orthogonal to an axis | shaft, the clamp screw by the side which is not adjusted is loosened slightly. At that time, since the inclined surface of the fixing tool on the non-adjusting side is a flat surface or a curved surface recessed in the circumferential direction, even if there is a relative displacement in the adjusting axial direction between the first and second axes, the non-adjusting side Since the clamp screw and the inclined surface always come into contact with each other, the connection between the first shaft and the second shaft can be prevented from being released. Therefore, even if the clamp screw on the adjustment side is removed from the inclined surface during the adjustment, the second shaft or the first shaft can be prevented from dropping.
上記実施例及び変形例では、無線ボアゲージを使用する場合を例に取り説明したが、本発明は上記の構成を備えるあらゆる軸連結調整機構に適用できるものであり、例えばタッチプローブや他の測定器をマシニングセンタに取り付ける場合にも適用できる。また、上記実施例及び変形例では、固定具に形成する傾斜面を上面から周囲面へ切り落とした形状としているが、底面から周囲面に切り落とした形状としてもよいことは言うまでもない。 In the above-described embodiments and modifications, the case where a wireless bore gauge is used has been described as an example. However, the present invention can be applied to any shaft coupling adjustment mechanism having the above-described configuration, for example, a touch probe or other measuring device. It can also be applied when mounting to a machining center. Moreover, in the said Example and modification, although it is set as the shape which cut off the inclined surface formed in a fixing tool from an upper surface to a surrounding surface, it cannot be overemphasized that it is good also as a shape cut off from the bottom face to the surrounding surface.
１０…被取付け軸（第１の軸）、１５…シャンク（ツールホルダ）、２０、２４、２５…ハウジング（第２の軸）、２６…溝、４０…ボルト、５０、５１…固定具、５５、５６…連結部、６１…リリービング・フローティング部、６２…ガイド部、６３…コンタクト、６５…測定ヘッド、１００、１０２…軸連結調整機構、１１１…取付け部、１１２…ねじ穴部、１１３…突起部、１１５…大径部、１１６…貫通穴、１２１…基準面（突起部根本面）、２０１〜２０４…クランプねじ、２１１〜２１４…ねじ穴、２２１…保持部、２２２…（固定具）収容部、２２３、２２４…基準面、２２５…大径部、２２７…底面、２２８…上面、２２９…外周面、２３０…内周面、２３１…ハウジング取付け面、２４１〜２４４…ねじ部、２５１〜２５４…当接部、５０１〜５０４…傾斜面、５１１…周囲面、５１２…上面、５１３…底面、５２１…位置決め穴、５２２…当接面、５２５…ボルト貫通穴、５３１〜５３４…曲面傾斜面、５４１…基準面、Ｏ…中心、Ｐ、Ｑ…クランプねじ位置 DESCRIPTION OF SYMBOLS 10 ... Mounted shaft (1st axis), 15 ... Shank (tool holder), 20, 24, 25 ... Housing (2nd axis), 26 ... Groove, 40 ... Bolt, 50, 51 ... Fixing tool, 55 , 56 ... connecting part, 61 ... relieving and floating part, 62 ... guide part, 63 ... contact, 65 ... measuring head, 100, 102 ... shaft connection adjusting mechanism, 111 ... mounting part, 112 ... screw hole part, 113 ... Projection part, 115 ... large diameter part, 116 ... through hole, 121 ... reference surface (protrusion base surface), 201-204 ... clamp screw, 211-214 ... screw hole, 221 ... holding part, 222 ... (fixing tool) Housing portion, 223, 224 ... reference surface, 225 ... large diameter portion, 227 ... bottom surface, 228 ... upper surface, 229 ... outer peripheral surface, 230 ... inner peripheral surface, 231 ... housing mounting surface, 241 to 244 ... threaded portion, 251 25 ... abutting portion, 501 to 504 ... inclined surface, 511 ... peripheral surface, 512 ... upper surface, 513 ... bottom surface, 521 ... positioning surface, 522 ... abutting surface, 525 ... bolt through hole, 531 to 534 ... curved surface inclined surface, 541: Reference plane, O: Center, P, Q: Clamp screw position
Claims (8)
前記第１の軸の前記第２の軸に接続する側の軸端部にボルトにより取り付けられた固定部材を有し、
前記固定部材に当接し、前記固定部材の前記第２の軸に対する軸方向位置及び軸方向に直交する方向の位置を調整可能にする調整手段を前記第２の軸に設けたことを特徴とする軸連結調整機構。 In a shaft coupling adjustment mechanism comprising: a rotatable first shaft; and a second shaft to which a work tool is attached that fits and holds the tip of the first shaft;
A fixing member attached by a bolt to a shaft end portion of the first shaft connected to the second shaft;
The second shaft is provided with an adjusting means that abuts on the fixing member and adjusts an axial position of the fixing member with respect to the second shaft and a position orthogonal to the axial direction. Shaft coupling adjustment mechanism.
前記固定部材の外形は、円筒面を実質的に周方向４等分位置または８等分位置で平面または曲面で切り落とした傾斜面を備えることを特徴とする請求項１に記載の軸連結調整機構。 The first shaft is a mounted shaft attached to a drive machine, and the second shaft is a housing to which at least one of a processing tool and a measurement probe can be mounted,
2. The shaft coupling adjustment mechanism according to claim 1, wherein the outer shape of the fixing member includes an inclined surface obtained by cutting off a cylindrical surface by a plane or a curved surface substantially at a position of 4 equal parts or 8 parts in a circumferential direction. .
前記被取付け軸の先端部に取り付けられた前記固定部材は、前記ハウジングの凹部に隙間を持って嵌合され、
前記クランプねじを前記傾斜面に当接させることにより、前記固定部材の底面と前記凹部の底面を当接させて芯合わせを可能にしたことを特徴とする請求項３に記載の軸連結調整機構。 The housing has a recess on the side connected to the mounted shaft,
The fixing member attached to the tip of the attached shaft is fitted with a gap in the recess of the housing,
4. The shaft coupling adjustment mechanism according to claim 3, wherein the clamp screw is brought into contact with the inclined surface, whereby the bottom surface of the fixing member and the bottom surface of the concave portion are brought into contact with each other to enable centering. .
前記被取付け軸の先端部に突起部を有し、
前記被取付け軸の先端部に取り付けた前記固定部材を前記ハウジングの凹部に隙間を持って嵌合し、
前記クランプねじを前記傾斜面に当接させることにより、前記固定部材の突起根本部平面と前記ハウジングの端面を軸方向に当接させて芯合わせ可能にしたことを特徴とする請求項３に記載の軸連結調整機構。 The housing has a recess on the side connected to the mounted shaft,
A protrusion at the tip of the mounted shaft;
Fitting the fixing member attached to the tip of the attached shaft with a gap in the recess of the housing,
4. The centering of the fixing member according to claim 3, wherein the clamp screw is brought into contact with the inclined surface so that the projection root portion plane of the fixing member and the end surface of the housing are contacted in the axial direction. Shaft coupling adjustment mechanism.
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| JP2016210196A JP6858531B2 (en) | 2016-10-27 | 2016-10-27 | Shaft connection adjustment mechanism |
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| JP2016210196A JP6858531B2 (en) | 2016-10-27 | 2016-10-27 | Shaft connection adjustment mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142618A (en) * | 2019-06-20 | 2019-08-20 | 中国工程物理研究院化工材料研究所 | A kind of machining micro reparation high-precision adjustment tooling |
| CN114700763A (en) * | 2022-04-12 | 2022-07-05 | 苏迈特智能科技(江苏)有限公司 | Machining device capable of accurately adjusting gap |
| CN117444270A (en) * | 2023-12-20 | 2024-01-26 | 福建优恩立光电科技有限公司 | Lens module processing equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06507844A (en) * | 1991-06-04 | 1994-09-08 | ミルコナ アクチボラーグ | Fixing device for milling cutting tools applicable to various holders |
-
2016
- 2016-10-27 JP JP2016210196A patent/JP6858531B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06507844A (en) * | 1991-06-04 | 1994-09-08 | ミルコナ アクチボラーグ | Fixing device for milling cutting tools applicable to various holders |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142618A (en) * | 2019-06-20 | 2019-08-20 | 中国工程物理研究院化工材料研究所 | A kind of machining micro reparation high-precision adjustment tooling |
| CN114700763A (en) * | 2022-04-12 | 2022-07-05 | 苏迈特智能科技(江苏)有限公司 | Machining device capable of accurately adjusting gap |
| CN117444270A (en) * | 2023-12-20 | 2024-01-26 | 福建优恩立光电科技有限公司 | Lens module processing equipment |
| CN117444270B (en) * | 2023-12-20 | 2024-03-12 | 福建优恩立光电科技有限公司 | Lens module processing equipment |
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| JP6858531B2 (en) | 2021-04-14 |
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