JP2014111289A - Tap - Google Patents
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- JP2014111289A JP2014111289A JP2012266092A JP2012266092A JP2014111289A JP 2014111289 A JP2014111289 A JP 2014111289A JP 2012266092 A JP2012266092 A JP 2012266092A JP 2012266092 A JP2012266092 A JP 2012266092A JP 2014111289 A JP2014111289 A JP 2014111289A
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- 230000004323 axial length Effects 0.000 claims abstract description 39
- 230000002093 peripheral effect Effects 0.000 abstract description 18
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000010079 rubber tapping Methods 0.000 description 21
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
Description
本発明は、自動ねじ立て装置で雌ねじを切削加工する場合などに好適に用いられるタップに関するものである。 The present invention relates to a tap suitably used when a female screw is cut by an automatic tapping device.
ナットを大量に生産可能な横型の自動ねじ立て装置で用いられるタップの一つに、シャンク部が真っ直ぐなストレートシャンクタップ（以下、単に「タップ」と記すことがある）がある。図７に、従来のストレートシャンクタップを示す。図７に示すタップ９は、ねじ山が形成されたねじ山部９１と、円柱状のシャンク部９２と、ねじ山と交差してねじ山を分断し、ねじ山部９１を越えてシャンク部９２に延出した溝９３とを有する。 One of taps used in a horizontal automatic tapping device capable of producing a large number of nuts is a straight shank tap (hereinafter, simply referred to as “tap”) having a straight shank portion. FIG. 7 shows a conventional straight shank tap. The tap 9 shown in FIG. 7 includes a thread portion 91 in which a thread is formed, a cylindrical shank portion 92, a thread intersecting with the thread and dividing the thread, and the shank portion 92 beyond the thread portion 91. And a groove 93 extending in the direction.
また、自動ねじ立て装置としては、特許文献１に開示されているような、タップを一方向に回転させつつ、ねじ山部を未加工ナットの下穴に圧入し、下穴の内周面に雌ねじ立てを行う装置が知られている。この装置では、タップを軸線方向に進退可能に設け、後退時にタップ後端を回転ヘッドに係合させて回転ヘッドと共にタップを回転させて雌ねじ立てを行う一方、前進時にタップ後端を回転ヘッドから離間させて、タップのシャンク部に外挿支持された、過剰になった加工済みナットを離間部から落下させ回収する。 Moreover, as an automatic tapping device, as disclosed in Patent Document 1, while rotating the tap in one direction, the thread portion is press-fitted into the prepared hole of the unprocessed nut, and the inner peripheral surface of the prepared hole is Devices for performing female tapping are known. In this device, the tap is provided so as to be able to advance and retreat in the axial direction, and the rear end of the tap is engaged with the rotary head at the time of backward movement and the tap is rotated together with the rotary head to perform female tapping. The excessively processed nuts that are extrapolated and supported by the shank portion of the tap are dropped and recovered from the separation portion.
図８に、自動ねじ立て装置のナット圧入装置の概説図、図９に、タップ９によるナット７のねじ立ての様子を示す概説図を示す。図８に示すように、未加工ナット７は、不図示のホッパーからシュート２２によって上下方向に一列に並んだ状態でねじ立て部２３に一つずつ供給される。ねじ立て部２３に供給された未加工ナット７は回転不能に保持される。そして、図９に示すように、ねじ立て部２３とタップ９とが接近する方向に相対的に移動して、回転するタップ９のねじ山部９１が未加工ナット７の下穴７１に圧入し、下穴７１の内周面に雌ねじが立てられる。 FIG. 8 is a schematic diagram showing a nut press-fitting device of an automatic tapping device, and FIG. 9 is a schematic diagram showing how the nut 7 is tapped by the tap 9. As shown in FIG. 8, the unprocessed nuts 7 are supplied one by one to the tapping portion 23 in a state of being lined up in a vertical direction by a chute 22 from a hopper (not shown). The unprocessed nut 7 supplied to the tapping portion 23 is held so as not to rotate. Then, as shown in FIG. 9, the threaded portion 91 of the rotating tap 9 is press-fitted into the prepared hole 71 of the unprocessed nut 7 by relatively moving in the direction in which the tapped portion 23 and the tap 9 approach each other. A female screw is erected on the inner peripheral surface of the prepared hole 71.
ここで、図９に示すように、ナット８がねじ山部９１を通過した時、シャンク部９２の外周面と溝９３とのエッジにナット８が引っ掛かり、ねじ立て部２３とナット８とのわずかな隙間によってナット８が傾き、ねじ立て部２３とタップ９とによってロックされた状態となることがある。 Here, as shown in FIG. 9, when the nut 8 passes through the threaded portion 91, the nut 8 is caught on the edge of the outer peripheral surface of the shank portion 92 and the groove 93, and the screw stand 23 and the nut 8 are slightly The nut 8 may be tilted by a small gap and may be locked by the tapping portion 23 and the tap 9.
このような状態で、ねじ立て部２３とタップ９とが離間する方向に相対的に移動すると、ロックされたナット８がねじ立て部２３から無理に外されることになり、ナット８の外周に傷が付いたり、雌ねじがシャンク部９２で押し潰されるといった不具合の生じるおそれがある。また、装置の円滑な動作が損なわれるため、装置が異常を感知して停止し加工が中断することもある。 In such a state, when the tapped portion 23 and the tap 9 move relative to each other in the separating direction, the locked nut 8 is forcibly removed from the tapped portion 23, and the nut 8 There is a possibility that defects such as scratches or a female screw being crushed by the shank portion 92 may occur. In addition, since the smooth operation of the apparatus is impaired, the apparatus may stop when it detects an abnormality and the processing may be interrupted.
このような不具合を抑制するためには、シャンク部９２の外周面と溝９３とのエッジを研磨部材などで丸くし、ナット８がエッジで引っ掛からないようにすることが考えられるが、厚みの薄いナットの場合にはナット８の傾きが大きくなり、前記エッジでのナット８の引っ掛かりを完全に防止することはできない。 In order to suppress such a problem, it is conceivable that the edge of the outer peripheral surface of the shank portion 92 and the groove 93 is rounded with a polishing member or the like so that the nut 8 is not caught by the edge. In the case of a nut, the inclination of the nut 8 becomes large, and the catch of the nut 8 at the edge cannot be completely prevented.
また、中空のねじ加工部材をシャンク部材に取り付けて使用するシェルタップでは、シャンクに溝がないため前記不具合は生じないが、ねじ加工部材とシャンク部材との接合強度を確保する観点から、径の小さいタップには適さない。 In addition, in the shell tap that is used by attaching a hollow threaded member to the shank member, the above-mentioned problem does not occur because there is no groove in the shank, but from the viewpoint of securing the bonding strength between the threaded member and the shank member, Not suitable for small taps.
本発明は、このような従来の問題に鑑みてなされたものであり、その目的は、シャンク部の外周面と溝とのエッジでナットが引っ掛かることがなく、ナット外周面の傷や雌ねじの形成不良、装置の異常停止などが生じないタップを提供することにある。 The present invention has been made in view of such a conventional problem, and the object thereof is to prevent the nut from being caught at the edge between the outer peripheral surface of the shank portion and the groove, and to form a scratch on the outer peripheral surface of the nut and the formation of an internal thread. An object of the present invention is to provide a tap that does not cause a defect or an abnormal stop of the apparatus.
前記目的を達成する本発明に係るタップは、一方端側に、ねじ山が形成されたねじ山部と、ねじ山と交差してねじ山を分断し且つねじ山部を越えて軸方向内方に延出した溝とが形成され、他方端側に第１接合部が形成され、ねじ山部に連続して所定の軸方向長さ（Ｌ１）の円柱状の中間部が設けられたねじ加工部材と、一方端側に、前記ねじ加工部材の第１接合部と接合する第２接合部が形成された円柱状のシャンク部材と、軸方向長さ（Ｌ２）が前記中間部の軸方向長さ（Ｌ１）と略同一で、前記中間部に外嵌可能な中間部材とを有するタップであって、前記ねじ加工部材の中間部に前記中間部材を外嵌し、前記ねじ加工部材の第１接合部と前記シャンク部材の第２接合部とを接合すると、前記溝の、ねじ山部を越えた部分が前記中間部材によって覆われることを特徴とする。 A tap according to the present invention that achieves the above-described object is provided with a thread portion formed with a thread on one end side, a thread that intersects the thread and divides the thread, and is axially inward beyond the thread. Is formed with a groove extending to the other end, a first joint is formed on the other end side, and a cylindrical intermediate portion having a predetermined axial length (L1) is provided continuously to the thread portion. A cylindrical shank member having a member and a second joining portion joined to the first joining portion of the threaded member on one end side; and an axial length (L2) is an axial length of the intermediate portion. (L1) and a tap having an intermediate member that can be externally fitted to the intermediate portion, wherein the intermediate member is externally fitted to the intermediate portion of the threaded member, When the joining portion and the second joining portion of the shank member are joined, the portion of the groove beyond the thread portion is the intermediate member. Accordingly, characterized in that the covered.
また、本発明に係るタップは、一方端側に、ねじ山が形成されたねじ山部と、ねじ山と交差してねじ山を分断し且つねじ山部を越えて軸方向内方に延出した溝とが形成され、他方端側に第１接合部が形成され、ねじ山部に連続して所定の軸方向長さ（Ｌ１）の円柱状の中間部が設けられたねじ加工部材と、一方端面から軸方向に形成された接合穴を有し、前記接合穴の、前記一方端面から所定長さ（Ｌ３）奥まった位置に第２接合部が形成された円柱状のシャンク部材と、所定の軸方向長さ（Ｌ４）で前記中間部に外嵌可能な中間部材とを有し、軸方向長さ（Ｌ３）と軸方向長さ（Ｌ４）との和が前記中間部の軸方向長さ（Ｌ１）と略同一のタップであって、前記ねじ加工部材の中間部に前記中間部材を外嵌し、前記ねじ加工部材の第１接合部と前記シャンク部材の第２接合部とを接合すると、前記溝の、ねじ山部を越えた部分が前記中間部材によって覆われることを特徴とする。 Further, the tap according to the present invention has a thread portion formed with a thread on one end side, and the thread intersects the thread and divides the thread and extends inward in the axial direction beyond the thread portion. A threaded member in which a first joint portion is formed on the other end side, and a cylindrical intermediate portion having a predetermined axial length (L1) is provided continuously to the screw thread portion; A cylindrical shank member having a joining hole formed in an axial direction from one end face, and having a second joining portion formed at a position recessed by a predetermined length (L3) from the one end face of the joining hole; An intermediate member that can be externally fitted to the intermediate portion with an axial length (L4), and the sum of the axial length (L3) and the axial length (L4) is the axial length of the intermediate portion. (L1) substantially the same tap, the intermediate member is externally fitted to an intermediate portion of the threaded member, and the threaded member is first joined. When joining the second joint between the shank member, characterized in that the said groove, the portion beyond the threaded portion is covered by the intermediate member.
さらに、本発明に係るタップは、円柱状のシャンク部材と、前記シャンク部材の一方端に分離可能に接合されるねじ加工部材とを有するタップであって、前記ねじ加工部材の一方端側には、ねじ山が形成されたねじ山部と、ねじ山と交差してねじ山を分断し、ねじ山部を越えて軸方向内方に延出した溝とが形成され、他方端側には、前記シャンク部材と接合するための第１接合部が形成され、前記シャンク部材の一方端側には、前記ねじ加工部材と接合するための第２接合部が形成され、前記ねじ加工部材と前記シャンク部材とを接合すると、前記溝の、ねじ山部を越えた部分が前記シャンク部材によって覆われることを特徴とする。 Further, the tap according to the present invention is a tap having a cylindrical shank member and a threaded member that is separably joined to one end of the shank member, and is provided on one end side of the threaded member. , A thread portion formed with a thread, and a groove that intersects the thread and divides the thread and extends inward in the axial direction beyond the thread portion, on the other end side, A first joint for joining with the shank member is formed, and a second joint for joining with the threaded member is formed at one end of the shank member, and the threaded member and the shank. When the member is joined, a portion of the groove beyond the threaded portion is covered with the shank member.
ここで、前記ねじ加工部材が、ねじ山部と第１接合部との間に所定の軸方向長さ（Ｌ１）の円柱状の中間部を有し、前記シャンク部材が、一方端面から軸方向に形成された接合穴と、接合穴の奥に形成された第２接合部とを有し、前記接合穴の一方端面から第２接合部までの長さ（Ｌ５）が前記中間部の軸方向長さ（Ｌ１）と略同一であるようにするのが好ましい。 Here, the threaded member has a columnar intermediate portion having a predetermined axial length (L1) between the screw thread portion and the first joint portion, and the shank member extends axially from one end surface. And a length (L5) from one end surface of the joint hole to the second joint portion is the axial direction of the intermediate portion. The length (L1) is preferably substantially the same.
また、第１接合部を雄ねじとし、第２接合部を雌ねじとしてもよい。 The first joint may be a male screw and the second joint may be a female screw.
本発明のタップでは、ねじ山部に形成される溝の、ねじ山部を越えた部分が中間部材又はシャンク部材によって覆われるので、シャンク部の外周面と溝とのエッジでナットが引っ掛かることがない。これにより、ナット外周面の傷や雌ねじの形成不良、装置の異常停止などが防止される。 In the tap of the present invention, the portion of the groove formed in the thread portion that exceeds the thread portion is covered with the intermediate member or the shank member, so that the nut may be caught at the edge of the outer peripheral surface of the shank portion and the groove. Absent. As a result, scratches on the outer peripheral surface of the nut, poor formation of the internal thread, abnormal stop of the device, and the like are prevented.
以下、本発明に係るタップについて詳述するが、本発明はこれらの実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 Hereinafter, the tap according to the present invention will be described in detail, but the present invention is not limited to these embodiments, and various modifications can be made within the scope shown in the claims, which are disclosed in different embodiments. Embodiments obtained by appropriately combining technical means are also included in the technical scope of the present invention.
図１に、本発明に係るストレートシャンクタップの一例を示す平面図（同図（ａ））及び分解図（同図（ｂ））を示す。この図に示すタップ１ａは、ねじ加工部材１１と、シャンク部材１２と、中間部材１３とを有する。 In FIG. 1, the top view (the figure (a)) and exploded view (the figure (b)) which show an example of the straight shank tap which concerns on this invention are shown. The tap 1a shown in this figure has a threaded member 11, a shank member 12, and an intermediate member 13.
ねじ加工部材１１は、一方端側に形成されたねじ山部１１１と、他方端側に形成された雄ねじ部（第１接合部）１１３と、ねじ山部１１１と雄ねじ部１１３との間に形成された円柱状の中間部１１２とを有する。そして、ねじ山部１１１には、ねじ山と交差してねじ山を分断し、ねじ山部１１１を越えて中間部１１２に延出した複数の溝１１４が形成されている。溝１１４によって分断されたねじ山の断面部分によって、ナットの内周面に雌ねじが切削加工される。 The threaded member 11 is formed between a screw thread portion 111 formed on one end side, a male screw portion (first joint portion) 113 formed on the other end side, and the screw thread portion 111 and the male screw portion 113. And a cylindrical intermediate portion 112 formed. The screw thread portion 111 is formed with a plurality of grooves 114 that intersect the screw thread and divide the screw thread and extend to the intermediate portion 112 beyond the screw thread portion 111. A female thread is cut on the inner peripheral surface of the nut by the cross-sectional portion of the thread divided by the groove 114.
シャンク部材１２は、一方端面に、雌ねじ部（第２接合部）１２２が形成された接合穴１２１を有する。一方、中間部材１３は円筒状で、その内径は、ねじ加工部材１１の中間部１１２の外径とほぼ同じで、外径はシャンク部材１２の外径とほぼ同じであり、軸方向長さＬ２は、中間部１１２の軸方向長さＬ１と略同一である。 The shank member 12 has a joint hole 121 in which an internal thread part (second joint part) 122 is formed on one end surface. On the other hand, the intermediate member 13 is cylindrical, and the inner diameter thereof is substantially the same as the outer diameter of the intermediate portion 112 of the threaded member 11, the outer diameter is substantially the same as the outer diameter of the shank member 12, and the axial length L2 Is substantially the same as the axial length L1 of the intermediate portion 112.
このような構成のタップの組立は、まず、ねじ加工部材１１の中間部１１２に中間部材１３を嵌め入れた後、ねじ加工部材１１の雄ねじ部１１３をシャンク部材１２の接合穴１２１に挿入し、ねじ加工部材１１の雄ねじ部１１３とシャンク部材１２の雌ねじ部１２２とを螺合させることにより行う。ここで、中間部材１３の軸方向長さＬ２と、ねじ加工部材１１の中間部１１２の軸方向長さＬ１とが略同一であることから、溝１１４の、ねじ山を越えて中間部１１２に延出した部分が中間部材１３によって覆われ、これにより、従来問題となっていたシャンク部の外周面と溝とのエッジによるナットの引っ掛かりは生じなくなる。なお、寸法精度によって、中間部材１３の軸方向長さＬ２が、中間部１１２の軸方向長さＬ１よりも短くなると、ねじ山部１１１とシャンク部材１２との間で中間部材１３が軸方向に移動可能になる。このため、中間部１１２の軸方向長さＬ１をマイナス公差又は中間部材１３の軸方向長さＬ２をプラス公差とするのが好ましい。公差としては０．５ｍｍ〜１ｍｍ程度であり、本明細書における「略同一」はこの公差を含むものとする。 To assemble the tap having such a configuration, first, the intermediate member 13 is fitted into the intermediate portion 112 of the threaded member 11, and then the male threaded portion 113 of the threaded member 11 is inserted into the joint hole 121 of the shank member 12, This is performed by screwing the male thread portion 113 of the threaded member 11 and the female thread portion 122 of the shank member 12 together. Here, since the axial length L2 of the intermediate member 13 and the axial length L1 of the intermediate portion 112 of the threaded member 11 are substantially the same, the groove 114 of the groove 114 passes over the thread to the intermediate portion 112. The extended portion is covered with the intermediate member 13, thereby preventing the nut from being caught by the edge between the outer peripheral surface of the shank portion and the groove, which has been a problem in the past. If the axial length L2 of the intermediate member 13 is shorter than the axial length L1 of the intermediate portion 112 due to dimensional accuracy, the intermediate member 13 is axially interposed between the thread portion 111 and the shank member 12. It becomes movable. For this reason, it is preferable that the axial length L1 of the intermediate portion 112 is a negative tolerance or the axial length L2 of the intermediate member 13 is a positive tolerance. The tolerance is about 0.5 mm to 1 mm, and “substantially the same” in this specification includes this tolerance.
図２に、本発明に係るタップの他の実施形態を示す。この図に示すタップ１ｂは、ねじ加工部材１４と、シャンク部材１５と、中間部材１３とを有する点は、図１に示したタップ１ａと同様であるが、ねじ加工部材１４が雌ねじ部（第１接合部）１４４を有し、シャンク部材１５が雄ねじ部（第２接合部）１５１を有している点が図１に示したタップ１ａと異なる。タップ１ｂの組立は、図１に示したタップ１ａと同様であり、ねじ加工部材１４の中間部１４２に中間部材１３を嵌め入れた後、ねじ加工部材１４の接合穴１４３にシャンク部材１５の雄ねじ部１５１を挿入し、ねじ加工部材１４の雌ねじ部１４４とシャンク部材１５の雄ねじ部１５１とを螺合させることにより行う。 FIG. 2 shows another embodiment of the tap according to the present invention. The tap 1b shown in this figure is the same as the tap 1a shown in FIG. 1 in that it has a threaded member 14, a shank member 15, and an intermediate member 13. 1) 144, and the shank member 15 is different from the tap 1 a shown in FIG. 1 in that the shank member 15 has a male screw part (second joint part) 151. The tap 1b is assembled in the same manner as the tap 1a shown in FIG. 1, and after the intermediate member 13 is fitted into the intermediate portion 142 of the threaded member 14, the male screw of the shank member 15 is inserted into the joint hole 143 of the threaded member 14. The portion 151 is inserted, and the female thread portion 144 of the threaded member 14 and the male thread portion 151 of the shank member 15 are screwed together.
図３に、本発明に係るタップのさらに他の実施形態を示す。この図に示すタップ１ｃは、ねじ加工部材１１と、シャンク部材１６と、中間部材１７とを有する。ねじ加工部材１１は、図１のタップ１ａと同じであるのでここでは説明を省略し、シャンク部材１６と中間部材１７について説明する。 FIG. 3 shows still another embodiment of the tap according to the present invention. The tap 1 c shown in this figure has a threaded member 11, a shank member 16, and an intermediate member 17. Since the threaded member 11 is the same as the tap 1a of FIG. 1, the description thereof is omitted here, and the shank member 16 and the intermediate member 17 will be described.
シャンク部材１６は、一方端面に軸方向に形成された接合穴１６１を有する。接合穴１６１の内径は、ねじ加工部材１１の中間部１１２の外径とほぼ同じである。そして、接合穴１６１の開口から軸方向長さＬ３奥まった位置に雌ねじ部（第２接合部）１６２が形成されている。一方、中間部材１７は軸方向長さＬ４の円筒状で、その内径は、ねじ加工部材１１の中間部１１２の外径とほぼ同じで、その外径はシャンク部材１６の外径とほぼ同じである。そして、軸方向長さＬ３と軸方向長さＬ４との和が中間部１１２の軸方向長さＬ１と略同一となるように設定されている。 The shank member 16 has a joint hole 161 formed in the axial direction on one end face. The inner diameter of the joining hole 161 is substantially the same as the outer diameter of the intermediate portion 112 of the threaded member 11. A female screw portion (second joint portion) 162 is formed at a position recessed from the opening of the joint hole 161 in the axial length L3. On the other hand, the intermediate member 17 has a cylindrical shape with an axial length L4, and its inner diameter is substantially the same as the outer diameter of the intermediate portion 112 of the threaded member 11, and its outer diameter is substantially the same as the outer diameter of the shank member 16. is there. The sum of the axial length L3 and the axial length L4 is set to be substantially the same as the axial length L1 of the intermediate portion 112.
このような構成のタップ１ｃの組立は、まず、ねじ加工部材１１の中間部１１２に中間部材１７を嵌め入れた後、ねじ加工部材１１の雄ねじ部１１３をシャンク部材１６の接合穴１６１に挿入し、ねじ加工部材１１の雄ねじ部１１３とシャンク部材１６の雌ねじ部１６２とを螺合させることにより行う。ここで、シャンク部材１６の、接合穴１６１の開口から雌ねじ部１６２までの軸方向長さＬ３と中間部材１７の軸方向長さＬ４との和が、ねじ加工部材１１の中間部１１２の軸方向長さＬ１と略同一であることから、溝１１４の、ねじ山を越えて中間部１１２に延出した部分が中間部材１７によって覆われる。これにより、従来問題となっていたシャンク部の外周面と溝とのエッジによるナットの引っ掛かりは生じなくなる。 To assemble the tap 1c having such a configuration, first, the intermediate member 17 is fitted into the intermediate portion 112 of the threaded member 11, and then the male threaded portion 113 of the threaded member 11 is inserted into the joint hole 161 of the shank member 16. The male threaded portion 113 of the threaded member 11 and the female threaded portion 162 of the shank member 16 are screwed together. Here, the sum of the axial length L3 of the shank member 16 from the opening of the joining hole 161 to the female screw portion 162 and the axial length L4 of the intermediate member 17 is the axial direction of the intermediate portion 112 of the threaded member 11. Since it is substantially the same as the length L 1, the portion of the groove 114 that extends beyond the screw thread to the intermediate portion 112 is covered with the intermediate member 17. Thereby, the hook of the nut by the edge of the outer peripheral surface of a shank part and a groove | channel which became a problem conventionally is not produced.
図４に、本発明に係るタップのさらに他の実施形態を示す。この図に示すタップ１ｄは、ねじ加工部材１１と、シャンク部材１８とを有する。ねじ加工部材１１は、図１のタップ１ａと同じであるのでここでは説明を省略し、シャンク部材１８について説明する。 FIG. 4 shows still another embodiment of the tap according to the present invention. The tap 1 d shown in this figure has a threaded member 11 and a shank member 18. Since the threaded member 11 is the same as the tap 1a of FIG. 1, the description thereof is omitted here, and the shank member 18 will be described.
シャンク部材１８は、一方端面に軸方向に形成された接合穴１８１を有する。接合穴１８１の内径は、ねじ加工部材１１の中間部１１２の外径とほぼ同じである。そして、接合穴１８１の開口から中間部１１２の軸方向長さＬ５奥まった位置に雌ねじ部（第２接合部）１８２が形成されている。 The shank member 18 has a joining hole 181 formed in the axial direction on one end face. The inner diameter of the joining hole 181 is substantially the same as the outer diameter of the intermediate portion 112 of the threaded member 11. A female screw portion (second joint portion) 182 is formed at a position deeper from the opening of the joint hole 181 in the axial direction length L5 of the intermediate portion 112.
ねじ加工部材１１とシャンク部材１８との接合は、ねじ加工部材１１の雄ねじ部１１３を、シャンク部材１８の接合穴１８１に嵌め入れ、雄ねじ部１１３と雌ねじ部１８２とを螺合させることにより行う。ここで、接合穴１８１の開口から雌ねじ部１８２までの軸方向長さＬ５と、ねじ加工部材１１の中間部１１２の軸方向長さＬ１とが略同一であることから、溝１１４の、ねじ山を越えて中間部１１２に延出した部分がシャンク部材１８によって覆われ、従来問題となっていたシャンク部の外周面と溝とのエッジによるナットの引っ掛かりは生じなくなる。 The threaded member 11 and the shank member 18 are joined by fitting the male threaded portion 113 of the threaded member 11 into the joint hole 181 of the shank member 18 and screwing the male threaded portion 113 and the female threaded portion 182 together. Here, since the axial length L5 from the opening of the joining hole 181 to the female threaded portion 182 and the axial length L1 of the intermediate portion 112 of the threaded member 11 are substantially the same, The portion extending beyond the intermediate portion 112 is covered with the shank member 18, and the hook of the nut due to the edge between the outer peripheral surface of the shank portion and the groove, which has been a problem in the past, does not occur.
以上説明した実施形態では、ねじ加工部材とシャンク部材との接合は、雄ねじ部と雌ねじ部との螺合によって行っていたが、本発明はこれに限定されるものではなく、例えば特開平11-77433号公報に記載の接合方法など従来公知の接合方法を用いることができる。また、シャンク部は、ストレート形状に限定されるものではなく、ベント形状などであってももちろん構わない。 In the embodiment described above, the threaded member and the shank member are joined by screwing the male screw portion and the female screw portion. However, the present invention is not limited to this, and for example, Japanese Patent Laid-Open No. A conventionally known joining method such as the joining method described in Japanese Patent No. 77433 can be used. Further, the shank portion is not limited to a straight shape, and may be of course a vent shape.
図５に、本発明に係るタップを用いた横型の雌ねじ立て装置の平面図、図６に、雌ねじ立て装置の側面図をそれぞれ示す。 FIG. 5 is a plan view of a horizontal female tapping device using a tap according to the present invention, and FIG. 6 is a side view of the female tapping device.
この雌ねじ立て装置は、タップ１ａを回転させつつ、未加工ナット７の下穴７１（図８に図示）をタップ１ａに圧入し、下穴７１の内周面に雌ねじ立てを行う装置である。具体的には、軸線方向に進退可能に設けられたタップ１ａと、不図示の動力によって一方向に回転し、タップ１ａの後端を着脱可能に保持する回転ヘッド３と、未加工ナット７を回転不能に保持し、タップ１ａに圧入するナット圧入装置２とを有する。 This female tapping device is a device that presses a pilot hole 71 (illustrated in FIG. 8) of the unprocessed nut 7 into the tap 1a while rotating the tap 1a, and performs female tapping on the inner peripheral surface of the pilot hole 71. Specifically, a tap 1a provided to be movable back and forth in the axial direction, a rotary head 3 that rotates in one direction by power (not shown) and detachably holds the rear end of the tap 1a, and an unprocessed nut 7 A nut press-fitting device 2 that is held in a non-rotatable manner and is press-fitted into the tap 1a.
ナット圧入装置２は、一対のガイドステー２４ａ，２４ｂによってタップ１ａの軸線方向に移動可能に設けられている。ナット圧入装置２は、圧縮コイルバネ４によってタップ１ａの方向に常に付勢されている。また、伸縮自在のロッド５１がナット圧入装置２を緩貫挿し、ロッド５１が収縮することによってナット圧入装置２に係合して、ナット圧入装置２を圧縮コイルバネ４の付勢力に抗して圧入解除位置に移動させる。 The nut press-fitting device 2 is provided so as to be movable in the axial direction of the tap 1a by a pair of guide stays 24a and 24b. The nut press-fitting device 2 is always urged in the direction of the tap 1 a by the compression coil spring 4. Further, the telescopic rod 51 loosely penetrates the nut press-fitting device 2, and the rod 51 contracts to engage the nut press-fitting device 2, so that the nut press-fitting device 2 is press-fitted against the urging force of the compression coil spring 4. Move to the release position.
ロッド５２及びロッド５３は、いずれも伸縮自在である。ロッド５２は、伸長することによってタップ１ａを前進させて、タップ１ａと回転ヘッド３との係合を解除するとともに、タップ１ａと回転ヘッド３との間に、加工済みのナット８が落下回収されるための隙間（不図示）を形成する。一方、ロッド５３は、伸長することによって、前進したタップ１ａを後方に後退させて回転ヘッド３と係合させる。 Both the rod 52 and the rod 53 are telescopic. The rod 52 extends to advance the tap 1a to release the engagement between the tap 1a and the rotary head 3, and the processed nut 8 is dropped and collected between the tap 1a and the rotary head 3. A gap (not shown) is formed. On the other hand, the rod 53 extends to retract the advanced tap 1a backward to engage with the rotary head 3.
ホッパー２１（図６に図示）に貯留された未加工ナット７は、シュート２２によって縦一列となってねじ立て部２３に一つずつ供給される。ねじ立て部２３に供給された未加工ナット７は回転不能に保持される。そして、ロッド５１が伸長して、ロッド５１とナット圧入装置２との係合が解除されると、圧縮コイルバネ４の付勢力によってナット圧入装置２はタップ方向に移動し、未加工ナット７の下穴７１（図８に図示）が、回転するタップ１ａのねじ山部１１１に圧入される。これによってナット７の雌ねじ立てが行われる。 The raw nuts 7 stored in the hopper 21 (shown in FIG. 6) are supplied to the tapping portion 23 one by one by the chute 22 in a vertical line. The unprocessed nut 7 supplied to the tapping portion 23 is held so as not to rotate. When the rod 51 extends and the engagement between the rod 51 and the nut press-fitting device 2 is released, the nut press-fitting device 2 moves in the tap direction by the urging force of the compression coil spring 4, and A hole 71 (shown in FIG. 8) is press-fitted into the thread 111 of the rotating tap 1a. As a result, the nut 7 is tapped.
雌ねじ立てが完了すると、ロッド５１が収縮してナット圧入装置２と係合し、ナット圧入装置２を圧縮コイルバネ４の付勢力に抗して圧入解除位置に移動させる。このとき、本発明のタップ１ａでは、図１に示したように、溝１１４の、ねじ山部１１１を越えて中間部１１２に延出した部分が中間部材１３によって覆われているので、従来問題となっていたシャンク部の外周面と溝とのエッジが露出せず、雌ねじ立ての完了したナット８は、引っ掛かってねじ立て部２３でロックすることなく、タップ１ａのねじ山部１１１から中間部材１３及びシャンク部１２へと円滑に移動する。またこのとき、ロッド５２が伸長して、タップ１ａを前進させて、タップ１ａと回転ヘッド３との係合を解除するとともに、タップ１ａと回転ヘッド３との間に、加工済みのナット８が落下回収されるための隙間を形成する。 When the female tapping is completed, the rod 51 contracts and engages with the nut press-fitting device 2, and the nut press-fitting device 2 is moved to the press-fitting release position against the urging force of the compression coil spring 4. At this time, in the tap 1a of the present invention, as shown in FIG. 1, the portion of the groove 114 that extends beyond the screw thread portion 111 to the intermediate portion 112 is covered with the intermediate member 13, so that the conventional problem The edge between the outer peripheral surface of the shank portion and the groove is not exposed, and the nut 8 that has been internally threaded is caught from the threaded portion 111 of the tap 1a without being hooked and locked by the threaded portion 23. 13 and the shank part 12 move smoothly. At this time, the rod 52 extends to advance the tap 1a to release the engagement between the tap 1a and the rotary head 3, and the processed nut 8 is interposed between the tap 1a and the rotary head 3. A gap is formed for the fall recovery.
雌ねじ立ての完了したナット８はシャンク部１２に移動し、口金６１とナット押さえ６２によって保持される。そして、中間部材１３及びシャンク部１２に貯えられたナット８が一定数を超えると、ロッド５２によってタップ１ａと回転ヘッド３との係合が解除され、タップ１ａと回転ヘッド３との間に隙間が形成されたときに、最後端のナット８がシャンク部１２から外れて落下回収される。このような一連の動作が連続して繰り返され、ナットの雌ねじ立てが連続的に自動で行われる。 The nut 8 for which the female tapping has been completed moves to the shank portion 12 and is held by the base 61 and the nut retainer 62. When the number of nuts 8 stored in the intermediate member 13 and the shank portion 12 exceeds a certain number, the engagement between the tap 1a and the rotary head 3 is released by the rod 52, and a gap is formed between the tap 1a and the rotary head 3. When the nut is formed, the nut 8 at the rearmost end is detached from the shank portion 12 and recovered by dropping. Such a series of operations is continuously repeated, and the female tapping of the nut is continuously and automatically performed.
本発明のタップでは、ねじ山部１１１に形成される溝１１４の、ねじ山を越えた部分が中間部材１３又はシャンク部材１８によって覆われるので、シャンク部の外周面と溝１１４とのエッジでナット７が引っ掛かることがない。これにより、ナット外周面の傷や雌ねじの形成不良、装置の異常停止などが防止され有用である。 In the tap of the present invention, the portion of the groove 114 formed in the thread portion 111 beyond the thread is covered by the intermediate member 13 or the shank member 18, so that the nut is formed at the edge between the outer peripheral surface of the shank portion and the groove 114. 7 is not caught. As a result, scratches on the outer peripheral surface of the nut, formation failure of the internal thread, abnormal stop of the apparatus, etc. are prevented and useful.
１ａ，１ｂ，１ｃ，１ｄ タップ
１１，１４ ねじ加工部材
１２，１５，１６，１８ シャンク部材
１３，１７ 中間部材
１１１ ねじ山部
１１２ 中間部
１１３ 雄ねじ部（第１接合部）
１１４ 溝
１２１，１６１，１８１ 接合穴
１２２ 雌ねじ部（第２接合部）
１４４ 雌ねじ部（第１接合部）
１５１ 雄ねじ部（第２接合部）
１６２ 雌ねじ部（第２接合部）
１８２ 雌ねじ部（第２接合部）
1a, 1b, 1c, 1d Tap 11, 14 Screw processing member 12, 15, 16, 18 Shank member 13, 17 Intermediate member 111 Screw thread portion 112 Intermediate portion 113 Male thread portion (first joint portion)
114 Groove 121, 161, 181 Joint hole 122 Female thread (second joint)
144 Female thread (first joint)
151 Male thread (second joint)
162 Female thread (second joint)
182 Female thread (second joint)
Claims (5)
前記ねじ加工部材の中間部に前記中間部材を外嵌し、前記ねじ加工部材の第１接合部と前記シャンク部材の第２接合部とを接合すると、前記溝の、ねじ山部を越えた部分が前記中間部材によって覆われることを特徴とするタップ。 On one end side, there are formed a thread portion formed with a thread and a groove that intersects the thread and divides the thread and extends inward in the axial direction beyond the thread portion. A threaded member having a first joint portion formed on a side thereof, a cylindrical intermediate portion having a predetermined axial length (L1) continuous to the threaded portion, and the threaded member on one end side A cylindrical shank member formed with a second joint portion to be joined to the first joint portion, and the axial length (L2) is substantially the same as the axial length (L1) of the intermediate portion. An intermediate member that can be externally fitted to the tap,
When the intermediate member is externally fitted to the intermediate portion of the threaded member and the first joint portion of the threaded member and the second joint portion of the shank member are joined, the portion of the groove beyond the thread portion The tap is covered with the intermediate member.
前記ねじ加工部材の中間部に前記中間部材を外嵌し、前記ねじ加工部材の第１接合部と前記シャンク部材の第２接合部とを接合すると、前記溝の、ねじ山部を越えた部分が前記中間部材によって覆われることを特徴とするタップ。 On one end side, there are formed a thread portion formed with a thread and a groove that intersects the thread and divides the thread and extends inward in the axial direction beyond the thread portion. The first joint portion is formed on the side, the threaded member is provided with a cylindrical intermediate portion having a predetermined axial length (L1) continuous to the screw thread portion, and is formed in the axial direction from one end face. A cylindrical shank member having a joining hole and having a second joining part formed at a position recessed from the one end face by a predetermined length (L3) of the joining hole, and a predetermined axial length (L4) An intermediate member that can be externally fitted to the intermediate portion, and the sum of the axial length (L3) and the axial length (L4) is substantially the same as the axial length (L1) of the intermediate portion. Because
When the intermediate member is externally fitted to the intermediate portion of the threaded member and the first joint portion of the threaded member and the second joint portion of the shank member are joined, the portion of the groove beyond the thread portion The tap is covered with the intermediate member.
前記ねじ加工部材の一方端側には、ねじ山が形成されたねじ山部と、ねじ山と交差してねじ山を分断し、ねじ山部を越えて軸方向内方に延出した溝とが形成され、他方端側には、前記シャンク部材と接合するための第１接合部が形成され、
前記シャンク部材の一方端側には、前記ねじ加工部材と接合するための第２接合部が形成され、
前記ねじ加工部材と前記シャンク部材とを接合すると、前記溝の、ねじ山部を越えた部分が前記シャンク部材によって覆われることを特徴とするタップ。 A tap having a cylindrical shank member and a threaded member that is separably joined to one end of the shank member,
On one end side of the threaded member, a thread portion formed with a thread, a groove that intersects the thread, divides the thread, and extends inward in the axial direction beyond the thread portion, Is formed on the other end side, a first joint for joining with the shank member is formed,
On one end side of the shank member, a second joint for joining with the threaded member is formed,
The tap, wherein when the threaded member and the shank member are joined, a portion of the groove beyond the threaded portion is covered with the shank member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012266092A JP5551757B2 (en) | 2012-12-05 | 2012-12-05 | Tap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012266092A JP5551757B2 (en) | 2012-12-05 | 2012-12-05 | Tap |
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| Publication Number | Publication Date |
|---|---|
| JP2014111289A true JP2014111289A (en) | 2014-06-19 |
| JP5551757B2 JP5551757B2 (en) | 2014-07-16 |
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| JP2012266092A Active JP5551757B2 (en) | 2012-12-05 | 2012-12-05 | Tap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018187720A (en) * | 2017-05-08 | 2018-11-29 | 酒井精工株式会社 | Nut tap |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4988353U (en) * | 1972-11-20 | 1974-07-31 | ||
| JPH0251025U (en) * | 1988-09-30 | 1990-04-10 | ||
| JP2010105123A (en) * | 2008-10-30 | 2010-05-13 | Sakai Seiko Kk | Tap with handle |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4988353U (en) * | 1972-11-20 | 1974-07-31 | ||
| JPH0251025U (en) * | 1988-09-30 | 1990-04-10 | ||
| JP2010105123A (en) * | 2008-10-30 | 2010-05-13 | Sakai Seiko Kk | Tap with handle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018187720A (en) * | 2017-05-08 | 2018-11-29 | 酒井精工株式会社 | Nut tap |
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