JPH0210105A - Device for inspecting effective diameter of female screw - Google Patents
Device for inspecting effective diameter of female screwInfo
- Publication number
- JPH0210105A JPH0210105A JP16042688A JP16042688A JPH0210105A JP H0210105 A JPH0210105 A JP H0210105A JP 16042688 A JP16042688 A JP 16042688A JP 16042688 A JP16042688 A JP 16042688A JP H0210105 A JPH0210105 A JP H0210105A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- effective diameter
- air
- male threaded
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007689 inspection Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000037361 pathway Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分腎）
この発明は、ねじ、特に雌ねじの有効径を空気圧を利用
して総合有効径と単独有効径の検査を一同だけのねじ込
みで可能ならしめた雌ねじの有効径検査装置に関するも
のである。[Detailed Description of the Invention] (Industrial Applications) This invention makes it possible to inspect the effective diameter of a screw, especially a female thread, by using air pressure to check the overall effective diameter and the individual effective diameter by just screwing together. This invention relates to an effective diameter inspection device for female threads.
（従来の技術〕
従来の雌ねじの有効径を検査する装置としては、例えば
第７図乃至第１０図に示すようなものがある（特公昭４
９−３６６２６号参照）。第７図は雌ねじの単独有効径
を測定する装置の一部縦断側面図、第８図は第７図の線
■−■に沿う断面図、第９図は雌ねじの単独有効径を測
定する方法の説明図、第１０図は第９図の線Ｘ−Ｘに沿
う断面図である。上記図面に基づいて該公知例の構成を
説明すると、測定するねじ山３５と合致するねじ山３８
を有し、かつ流体媒質用通路３９を備えた保持器３１−
と、多数の隣接する装置のねじ山３８のフランク上にお
いて直径方向の両端に配置され、端部が装置のねじ山３
８の頂部３２に達しないで前記通路３９に連結された矩
形断面のノズル３７と、前記ノズル３７が加圧された流
体媒質を装置のねじ山３８と測定するねじ山３５の間の
間隙に送入するようにしていることと、前記ノズル３７
に対して半径方向に動くことができかつ装置のねじ山３
８と測定するねじ山３５の頂部との間の間隙を閉鎖する
ように設計されているシャッタ３３と、測定するねじ山
３５と装置のねじ山３８との間の間隙から前記流体媒質
を排出する装置（溝３４）と、測定するねじ山３５のフ
ランク３６と装置のねじ山３８のフランクとの間の間隙
の量に依存する前記流体媒質のパラメータを測定する装
置（図示せず）からなっている。(Prior Art) As a conventional device for inspecting the effective diameter of a female thread, there is a device shown in FIGS.
9-36626). Figure 7 is a partial longitudinal side view of a device for measuring the single effective diameter of a female thread, Figure 8 is a sectional view taken along the line ■-■ in Figure 7, and Figure 9 is a method for measuring the single effective diameter of a female thread. FIG. 10 is a sectional view taken along line XX in FIG. 9. To explain the configuration of the known example based on the above drawing, the thread 38 that matches the thread 35 to be measured is
and a holder 31- having a passage 39 for a fluid medium.
and are disposed at diametrical ends on the flanks of a number of adjacent device threads 38, the ends of which are located on the flanks of the device threads 38.
A nozzle 37 of rectangular cross section is connected to said passage 39 without reaching the top 32 of the device, said nozzle 37 delivering a pressurized fluid medium into the gap between the thread 38 and the measuring thread 35 of the device. and the nozzle 37
The screw thread 3 of the device can be moved radially against
8 and the top of the thread 35 to be measured and a shutter 33 designed to close the gap between the thread 35 to be measured and the thread 38 of the device to drain said fluid medium from the gap between the thread 35 to be measured and the thread 38 of the device. a device (groove 34) and a device (not shown) for measuring a parameter of said fluid medium that depends on the amount of gap between the flank 36 of the thread 35 to be measured and the flank of the thread 38 of the device. There is.
この他に雌ねじ有効径のより一般的な検査方法として、
通りねじプラグゲージ及び止りねじプラグゲージによる
検査があるが、これらの検査方法では、被検査雌ねじに
通りねじプラグゲージを干渉なくねじ込むことによって
、総合有効径が雌ねじ有効径の最小許容限界を越えない
ことを、また被検査雌ねじに止りねじプラグゲージを２
回転以上ねじ込むことができないことによって、単独有
効径が雌ねじ有効径の最大許容限界を越えないことを検
査するものであった。In addition to this, a more general inspection method for the effective diameter of female threads is
There are inspections using a through thread plug gauge and a blind thread plug gauge, but with these inspection methods, the overall effective diameter does not exceed the minimum allowable limit for the female thread effective diameter by screwing the through thread plug gauge into the female thread to be inspected without interference. Also, attach a set screw plug gauge to the female thread to be inspected.
This was to check that the single effective diameter does not exceed the maximum permissible limit of the female thread effective diameter by not being able to screw in more than one rotation.
しかしながら、前記特公昭４９−３６６２１ｉ号公報に
記載された雌ねじの有効径検査装置にあっては、スロッ
トの形をしたノズル３７と、ノズル３７に対して半径方
向に動くシャッタ３３及び測定するねじ山３５のフラン
ク３６と、装置のねじ山３８のフランクとの間隙により
流出面積が決まるため、シャッタ３３の可動、固定によ
る誤差を生じ、測定値が不安定となる欠点があり、また
構成部品が多く構造が複雑なので、小径雌ねじの検査に
は適用困難であり、また装置のねじ山の有効径が通り測
寸法に限定されておらず、被検査雌ねじの総合有効径を
同時に検査することができないという問題点がある。However, the effective diameter inspection device for female threads described in Japanese Patent Publication No. 49-36621i has a slot-shaped nozzle 37, a shutter 33 that moves in the radial direction relative to the nozzle 37, and a screw thread to be measured. Since the outflow area is determined by the gap between the flank 36 of 35 and the flank of the thread 38 of the device, there is a drawback that errors occur due to the movable and fixed shutter 33, resulting in unstable measured values, and there are many components. Because the structure is complex, it is difficult to apply it to the inspection of small-diameter female threads, and the effective diameter of the thread of the device is not limited to the measurement dimension, making it impossible to simultaneously inspect the overall effective diameter of the female thread to be inspected. There is a problem.
一方、前記有効径用限界ゲージによる検査では、通りね
じプラグゲージと、止りねじプラグゲージとをそれぞれ
被検査雌ねじにねじ込まなければならず、しかも定量的
な情報を得られないという問題点があった。On the other hand, the above-mentioned inspection using the effective diameter limit gauge has the problem that a through-thread plug gauge and a stop-screw plug gauge must be screwed into the female thread to be inspected, and quantitative information cannot be obtained. .
本発明の課題は、上記問題点を解決することにある。An object of the present invention is to solve the above problems.
本発明は上記の各問題点に着目してなされたものであっ
て、軸部の周囲に被測定雌ねじに対応する通りねじプラ
グゲージのねじ山に相当するように形成された雄ねじ部
と、該雄ねじ部の１つのねじ山の両側フランク面対称位
置の２個所、及び該２個所の軸心方向対称位置の計４個
所に穿設されたジェット穴と、前記２個所一組のジェッ
ト穴を挟んで、前記雄ねじ部の軸線方向に平行して形成
される対の空気逃げ溝と、前記軸部の軸線上に穿設され
て前記シェツト穴に圧力空気を供給するための空気供給
路を形成してなる雌ねじの有効径検査装置を開発し、こ
れによって、空気圧を利用して、雌ねじの総合有効径と
単独有効径の検査を容易かつ正確に行なうことができる
ものである。The present invention has been made in view of the above-mentioned problems, and includes a male threaded portion formed around the shaft portion to correspond to the thread of a threaded plug gauge corresponding to the female thread to be measured; A total of four jet holes are drilled at two locations symmetrical to the flank surfaces on both sides of one thread of the male threaded portion, and two locations symmetrical to the axial direction of the two locations, and a set of jet holes at the two locations are sandwiched between the jet holes. and a pair of air escape grooves formed parallel to the axial direction of the male threaded portion, and an air supply path bored on the axial line of the shaft portion for supplying pressurized air to the shet hole. We have developed an effective diameter inspection device for female threads, which makes it possible to easily and accurately inspect the overall effective diameter and individual effective diameter of female threads using air pressure.
以下、この発明を図面に基づいて説明する。 The present invention will be explained below based on the drawings.
第１図は、この発明の一実施例を示す側面図と計測シス
テムを示すブロック線図、第２図は第１図のＡ−Ａ拡大
断面図、第３図は第１図の正面図である。FIG. 1 is a side view showing an embodiment of the present invention and a block diagram showing a measurement system, FIG. 2 is an enlarged sectional view taken along line A-A in FIG. 1, and FIG. 3 is a front view of FIG. be.
まず構成を説明すると、１は前方に案内部４、中央に雄
ねじ部３、後方に軸部６を同軸上に形成したねじノズル
体であって、上記雄ねじ部３の１つのねじ山２の両側の
フランク面７に２個所と、軸心に対しこれらと対称の位
置に２個所と合計４個のジェット穴８ａ、８ａ’ 、８
ｂ、８ｂ’をそれぞれ設け、また前記雄ねじ部３にはジ
ェット穴８ａ、８ａ’及びジェット穴８ｂ、８ｂ’を挾
んで対向する２木づつ計４木の空気逃げ溝９ａ、９ａ’
、及び９ｂ、９ｂ’が案内部４から軸部６に通じるよう
に形成されている。該軸部６は中央に鍔部１ｏが設けら
れ、かつ後端には空気圧回路２４に連結する継手１２が
取付けられている。また前記ねじノズル体１の内部には
、メイン空気通路１１が設けられ、その一端は軸部６の
継手１２に通じるように形成され、他端は、前記メイン
空気通路１１に直交しかつ前記のジェット穴８ａ、８ａ
８ｂ、８ｂ′に通じる補助空気通路１６に連通形成され
ているものである。１７は空気圧回路１６をトリルによ
り穿設形成した後、その開口部を閉塞する為の埋栓であ
る。First, to explain the structure, reference numeral 1 denotes a threaded nozzle body having a guide part 4 in the front, a male thread part 3 in the center, and a shaft part 6 in the rear, coaxially formed on both sides of one thread 2 of the male thread part 3. There are a total of four jet holes 8a, 8a', 8, two on the flank surface 7 and two at symmetrical positions with respect to the axis.
b and 8b', respectively, and the male threaded portion 3 has jet holes 8a and 8a' and two air escape grooves 9a and 9a' each facing each other with the jet holes 8b and 8b' in between, a total of four air escape grooves 9a and 9a'.
, 9b, 9b' are formed so as to communicate from the guide part 4 to the shaft part 6. The shaft portion 6 is provided with a flange portion 1o at the center, and a joint 12 connected to the pneumatic circuit 24 is attached to the rear end. Further, a main air passage 11 is provided inside the threaded nozzle body 1, one end of which is formed to communicate with the joint 12 of the shaft portion 6, and the other end is perpendicular to the main air passage 11 and is connected to the joint 12 of the shaft portion 6. Jet holes 8a, 8a
8b, 8b' is connected to the auxiliary air passage 16. Reference numeral 17 denotes a plug for closing the opening after the pneumatic circuit 16 is drilled and formed.
また前記補助空気通路１６は前記雄ねじ部３のフランク
面７に設けたジェット穴８ｇ、８ａ’および８ｂ、８ｂ
’にそれぞれ連通形成され、かつジェット穴８ａ、８ａ
’ 、８ｂ、８ｂ’の先端は前記空気逃げ溝９ａ、９ａ
’および９ｂ、９ｂ’で仕切られており方形のジェット
受圧面２１ａ、２１ａ’および２１ｂ、２１ｂ’が形成
されている。またジェット受圧面２１ａ、２１ａ’およ
び２１ｂ、２１ｂ’にはフランク面７に対し適宜な段差
即ちジェット穴８ａ、８ａ’および８ｂ、８ｂ’と空気
逃げ溝９ａ、９ａ’及び９ｂ、９ｂ’を通じる排気段差
Ｈａ、Ｈａ’および）Ｉｂ、）Ｉｂ’が設けられている
。１８は受は台て、ねじノズル体１を保持するものであ
る。Further, the auxiliary air passage 16 includes jet holes 8g, 8a' and 8b, 8b provided in the flank surface 7 of the male threaded portion 3.
', respectively, and the jet holes 8a, 8a are formed in communication with each other.
', 8b, 8b' have the air escape grooves 9a, 9a.
' and 9b, 9b' to form rectangular jet pressure receiving surfaces 21a, 21a' and 21b, 21b'. Further, the jet pressure receiving surfaces 21a, 21a' and 21b, 21b' are provided with appropriate steps relative to the flank surface 7, that is, jet holes 8a, 8a' and 8b, 8b' and air escape grooves 9a, 9a' and 9b, 9b'. Exhaust steps Ha, Ha' and )Ib, )Ib' are provided. Reference numeral 18 is a support that holds the screw nozzle body 1.
１３は空気マイクロメータ等の計測器で、ねじノズル体
１の維手１２に空気圧回路２４を介して連結し、ジェッ
ト穴８ａ、８ａ’、８ｂ、８ｂ’ （７）ジェット面２
１ａ、２１ａ’および２１ｂ、２１ｂ’と、雌ねじ有効
径マスタ５のフランク面２７との隙間を検知して計測表
示するものである。１４はフィルタ、１５は圧縮空気を
供給する為の空気源である。また計測器１３の内部構成
を第６図で説明すると、Ｒはレギュレータ（減圧制御部
）で空気源１５より入力された空気圧を一定圧にする部
分である。２２は倍率調整絞り、２３はジェット穴２６
の開口面と被測定面との間のすきまＨに対して表示部２
５の指針２０の基準位置を合せる為のＴ点調整絞りであ
る。Reference numeral 13 denotes a measuring device such as an air micrometer, which is connected to the fiber 12 of the screw nozzle body 1 via a pneumatic circuit 24, and is connected to the jet holes 8a, 8a', 8b, 8b' (7) jet surface 2.
1a, 21a' and 21b, 21b' and the flank surface 27 of the female thread effective diameter master 5 are detected and measured and displayed. 14 is a filter, and 15 is an air source for supplying compressed air. Further, the internal configuration of the measuring instrument 13 will be explained with reference to FIG. 6. R is a regulator (pressure reduction control section) that keeps the air pressure input from the air source 15 at a constant pressure. 22 is a magnification adjustment diaphragm, 23 is a jet hole 26
Display section 2 with respect to the gap H between the aperture surface and the surface to be measured.
This is a T-point adjustment diaphragm for aligning the reference position of the pointer 20 of No. 5.
尚前記ねじノズル体１の雄ねじ部３のねじ山２の有効径
は、ねじゲージの通り寸法と同一寸法に形成されている
。また雌ねじ有効径マスタ５の小範（有効径が小さいマ
スク）は雄ねじ部３のねじ山２の有効径に対し幾分大き
くなフている。これは有効径マスタ５の小範ねじ山３０
と雄ねじ部３のねじ山２の間に保証された隙間を確保す
る為と有効径マスタ５を入り易くする為のものである。The effective diameter of the thread 2 of the male threaded portion 3 of the threaded nozzle body 1 is formed to have the same dimension as the thread gauge. Further, the small range (mask with a small effective diameter) of the female thread effective diameter master 5 is somewhat larger than the effective diameter of the thread 2 of the male thread portion 3. This is the small range screw thread 30 of the effective diameter master 5
This is to ensure a guaranteed gap between the thread 2 of the male threaded portion 3 and to make it easier for the effective diameter master 5 to enter.
以上が本実施例の構成であるが次にその作用を説明する
。The configuration of this embodiment has been described above, and its operation will be explained next.
第４図はジェット穴８ａ、８ａ’のジェット面２１ａ。FIG. 4 shows jet surfaces 21a of jet holes 8a and 8a'.
２１ａ゛と雌ねじ有効径マスタ５のフランク面２７との
隙間の変化を表わした拡大図で、点線が小範（有効径の
小さいマスク）の隙間関係を表わし、−点鎖線か大箱（
有効径の大きいマスク）の隙間関係を表わしている。21a'' and the flank surface 27 of the female thread effective diameter master 5. The dotted line represents the gap relationship between the small box (mask with a small effective diameter), and the - dotted line or the large box (
This shows the gap relationship between masks (with large effective diameters).
次にジェット穴８ａのシェツト面２１ａの隙間ａ１と有
効径方向の隙間ｄ１との関係をみてみると、ねじ山の半
角が３０度の場合、隙間ｄ１に対し隙間ａ１は坏になる
。従って、ジェット穴８ａ、８ａ’のジェット面２１ａ
、２１ａ’の隙間の変化量は、有効径マスクの有効径方
向の変化量（［１２ｄｔ）に対しく（ｂｌ ＋ ｂ２
） −（ａ１＋８２））になる。例えば有効径マスク大
箱の有効径と小範の有効径の差が２００μｍの場合、片
側のねじ山では１００μｍの変化量となり、おのおのの
ジェット面２１ａ、２１ａ’に等分に振り分けられれば
５０μｍづつの隙間ということになる。Next, looking at the relationship between the gap a1 in the shet surface 21a of the jet hole 8a and the gap d1 in the effective radial direction, if the half angle of the screw thread is 30 degrees, the gap a1 becomes a cross with respect to the gap d1. Therefore, the jet surfaces 21a of the jet holes 8a, 8a'
, 21a' is the change in the effective diameter direction of the effective diameter mask ([12dt)] (bl + b2
) −(a1+82)). For example, if the difference between the effective diameter of the large mask box and the effective diameter of the small box is 200 μm, the amount of change in the screw thread on one side will be 100 μm, and if it is equally distributed to each jet surface 21a, 21a', the difference will be 50 μm. This means that there is a gap between
次に検査方法について説明すると、第１図に示すように
ねじノズル体１を例えば受は台１８に保持し、ねじノズ
ル体１の軸部６に設けた継手１２と計測器１３の空気圧
回路を連結する。Next, the inspection method will be explained. As shown in FIG. Link.
次に空気源１５より空気を流入ずれは、空気はフィルタ
１４を通り、計測器１３を経て継手１２よりねじノズル
体１に入り、またメイン空気通路１１、補助空気通路１
６を経て、ジェット穴８ａ、８ａ’と８ｂ、８ｂ’から
流出され測定が可能となる。さて、雌ねじの有効径の検
査方法であるが、ねじノズル体１のジェット穴８ａ、８
ａ’および８ｂ、８ｂ’より空気が流出しているので、
まずねじノズル体１の前方より雌ねじの有効径マスタを
入れ、雄ねじ部３の端部より回転させてねじ込み、適宜
位置に止め、計測器１３の指示合せをする。その際有効
径マスクの大箱の有効径と小範の有効径の差が２００μ
ｍである場合を例にとって第５図を基に説明する。第５
図は目盛板における指針の位置関係を示す図で、１９は
目盛板、２０は指針で、有効径マスタの大箱をセットし
た時、破線で示す左１００の目盛に合せ、有効径マスク
の小範をセットした時実線て示す右１００の目盛となる
ように倍率合せをする。これで有効径マスクの計測器で
の倍率合せ（指針合せ）は終了し、後は有効径マスク５
のかわりに被測定雌ねじくナツト等）をねじノズル体１
の雄ねじ部３にねじ込み、表示された指針の位置を読み
取れば単独有効径の寸法を検証できる。例えばＯを表示
した場合は有効径マスクの小範に対し、プラス１００μ
ｍである。尚第２図において雄ねじ部３のジェット面２
１ａ２１ａ゛および２１ｂ、２１ｂ’の周囲に、空気逃
げ溝９ａ９ａ’及び９ｂ、９ｂ’に通じる排気段差ｌ＋
ａ 、 Ｈａ ’およびＨｂ］ｂ’を設けた理由は、
被測定雌ねじの有効径が小さくて被測定雌ねじのフラン
ク面トねじノズル体１の雄ねじ部３のフランク面７との
すきまが非常に小さい場合、あるいは被測定雌ねじのピ
ッチに誤差が有り、ねじノズル体１の雄ねじ部３のフラ
ンク面７に被測定雌ねじのフランク面か接触する場合て
も上記の排気段差により検証を可能にするものである。Next, air is introduced from the air source 15, passes through the filter 14, passes through the measuring device 13, enters the threaded nozzle body 1 from the joint 12, and also enters the main air passage 11 and the auxiliary air passage 1.
6 and then flows out from jet holes 8a, 8a' and 8b, 8b', making it possible to measure. Now, as for the method of inspecting the effective diameter of the female thread, the jet holes 8a and 8 of the threaded nozzle body 1 are
Since air is flowing out from a', 8b, and 8b',
First, insert the effective diameter master of the female thread from the front of the threaded nozzle body 1, rotate it from the end of the male threaded part 3, screw it in, stop it at an appropriate position, and adjust the indication of the measuring device 13. At that time, the difference between the effective diameter of the large box and the effective diameter of the small box of the effective diameter mask is 200μ.
The case where m is used will be explained based on FIG. 5 as an example. Fifth
The figure shows the positional relationship of the pointer on the scale plate. 19 is the scale plate, 20 is the pointer, and when the large box of effective diameter master is set, align it with the scale of 100 on the left indicated by the broken line, and set the effective diameter mask to the small When setting the range, adjust the magnification so that it reaches the scale of 100 on the right as shown by the solid line. This completes the magnification adjustment (pointer adjustment) of the effective diameter mask using the measuring instrument, and all that is left is to adjust the effective diameter mask 5.
Instead, attach the threaded nozzle body 1 to the threaded nozzle body 1
The size of the individual effective diameter can be verified by screwing it into the male threaded part 3 of the holder and reading the position of the indicated pointer. For example, if O is displayed, plus 100μ to the small range of the effective diameter mask.
It is m. In addition, in Fig. 2, the jet surface 2 of the male threaded portion 3
Around 1a21a' and 21b, 21b', there is an exhaust step l+ leading to air escape grooves 9a9a' and 9b, 9b'.
The reason for providing a, Ha' and Hb]b' is
If the effective diameter of the female thread to be measured is small and the clearance between the flank face of the female thread to be measured and the flank face 7 of the male thread part 3 of the threaded nozzle body 1 is very small, or if there is an error in the pitch of the female thread to be measured, the threaded nozzle Even if the flank surface 7 of the male threaded portion 3 of the body 1 comes into contact with the flank surface of the female thread to be measured, the above-mentioned exhaust level difference enables verification.
また雄ねじ部３のねじ山２の有効径の寸法を通り測寸法
としたのは、総合有効径の検査を同時に行うためである
。Furthermore, the reason why the effective diameter of the thread 2 of the male threaded portion 3 is measured is to simultaneously inspect the overall effective diameter.
（発明の効果〕
以上説明してきたように、本発明によればその構成を、
雄ねじ部を備えたねじノズル体の該雄ねじ部の１つのね
じ山の両側のフランク面２個所と、軸心に対しこれらと
対称の位置の２個所とに計測器の空気圧回路に接続され
る合計４個のジェット穴を設番プ、前記雄ねじ部にはジ
ェット穴を挾んで軸方向におのおの空気逃げ溝を形成し
、該雄ねじ部のねじ山を被測定雌ねじに対する通りねじ
プラグゲージのねじ山に相当するように形成して成るも
のとしたため、被検査雌ねじ（ナツト等）をねじノズル
体の雄ねじ部にねじ込むだけで雌ねじの総合有効径と単
独有効径とを同時に検査できる。２個のジェット穴を軸
心に対して対称に設けたことにより、被検査物（ナツト
等）の姿勢誤差か補正され、高精度の雌ねじの有効径の
検査が保証される。(Effects of the Invention) As explained above, according to the present invention, the configuration is
A total of two parts connected to the pneumatic circuit of the measuring instrument at two flank faces on both sides of one thread of the male threaded part of a threaded nozzle body equipped with a male threaded part, and at two places symmetrical to these with respect to the axis. Set up four jet holes, form air escape grooves in the axial direction between the jet holes in the male threaded part, and connect the threads of the male threaded part to the threads of the through-thread plug gauge for the female thread to be measured. Since they are formed in a corresponding manner, the overall effective diameter and the individual effective diameter of the female thread can be simultaneously inspected by simply screwing the female thread to be inspected (such as a nut) into the male threaded portion of the threaded nozzle body. By providing the two jet holes symmetrically with respect to the axis, posture errors of the object to be inspected (nut, etc.) are corrected, and highly accurate inspection of the effective diameter of the female thread is guaranteed.
また計測器の表示部の表示を見ることにより単独有効径
の寸法を知ることができるので、単に合格、不合格がわ
かるだけてなく、雌ねじの加工に対する対策もすぐたて
られるという効果もある。In addition, since it is possible to know the size of the single effective diameter by looking at the display on the measuring instrument, it is possible to not only know whether the product has passed or failed, but also to be able to immediately take measures for machining female threads.
またねじノズル体に雄ねじ部を設り、内部に空気通路を
設け、その空気通路に各シェツト穴を連通させただけの
簡単な構造なので、小径の雌ねじの検査にも適用可能で
ある。Furthermore, since the structure is simple, consisting of a male threaded part provided in the threaded nozzle body, an air passage provided inside, and each shet hole communicated with the air passage, it can also be applied to the inspection of small diameter female threads.
またねじノズル体の雄ねじ部のねじ山の有効径の寸法が
通り測寸法に製作されているので、被検査雌ねじの総合
有効径を同時に検査できる。In addition, since the effective diameter of the thread of the male threaded portion of the threaded nozzle body is manufactured to the exact dimensions, the total effective diameter of the female thread to be inspected can be inspected at the same time.
従来の有効径用限界ゲージによる検査では、通りねじプ
ラグゲージと止りねじプラグケージをそれぞれ被検査雌
ねじにねじ込まなければならぬのに比較し、作業効率上
きわめて大きな効果を生むものである。Inspection using a conventional limit gauge for effective diameter requires screwing a threaded plug gauge and a set threaded plug cage into the female thread to be inspected, but this has an extremely large effect on work efficiency.
なお、本発明の一実施例によれは、ねじノズル体の雄ね
じ部のシェツト穴まわりのジェット面と雄ねじ部フラン
ク面との間に適宜な段差を設けたため、被検査雌ねじの
フランク面がねじノズル体の雄ねじ部のフランク面に接
触する場合でも、ジェット穴から被検査雌ねじのフラン
り面へ向ってジェット流を流すことができ、有効径の検
査を支障なく行うことができ、またジェット面の摩耗を
防ぐのにも役立つといった効果が得られる。According to one embodiment of the present invention, an appropriate level difference is provided between the jet surface around the shet hole of the male threaded part of the threaded nozzle body and the flank face of the male threaded part, so that the flank face of the female thread to be inspected is aligned with the threaded nozzle. Even when contacting the flank surface of the male threaded part of the body, the jet flow can flow from the jet hole toward the flank surface of the female thread to be inspected, making it possible to inspect the effective diameter without any trouble, and also It also has the effect of helping to prevent wear.
第１図は、本発明の一実施例を示す側面図と計測システ
ムを示すブロック線図、第２図は第１図のＡ−Ａ拡大断
面図、第３図は第１図の右側面図、第４図はジェット穴
と有効径マスクのすきまの変化を表わした説明図、第５
図は計測器の目盛板上における指針の位置関係を示す説
明図、第６図は計測器の基本原理を示す空気圧回路図、
第７図は公知の雌ねじの単独有効径を測定する装置の一
部縦断側面図、第８図は第７図の線■−■に沿う断面図
、第９図は第７．８図の公知例において雌ねじの単独有
効径を測定する方法の説明図、第１０図は第９図の線Ｘ
Ｘに沿う断面図である。
１・・・ねじノズル体 ２・・・ねじ山３・・・雄ね
じ部 ４・・・案内部５・・・有効径マスタ
７・・・フランク面
８ａ ８ａ ８ｂ ８ｂ
９ａ ９ａ ９ｂ ９ｂ
１０・・・鍔部
１２・・・継手
１４・・・フィルタ
１６・・・補助空気通路
１８・・・受は台
２０・・・指針
２１ａ ２１ａ ２１ｂ ２１ｂ
２２・・・倍率調整絞り
２４・・・空気圧回路
２６・・・シェツト穴
２８・・・雌ねじ部
３０・・・ねじ山
３２・・・頂部
３４・・・溝
３６・・・フランク
３８・・・装置のねじ山
・・・シェツト穴
・・・空気逃げ溝
１１・・・メイン空気通路
１３・・・計測器
１５・・・空気源
１７・・・埋栓
１９・・・目盛板
６・・・軸部
・・・シェラｌ−面
２３・・・零点調整絞り
２５・・・表示部
２７・・・フランク面
２９・・・谷部
３１・・・保持器
３３・・・シャッタ
３５・・・測定するねじ山
３７・・・ノズル
３９・・・流体媒質用通路
Ｈａ、Ｈａ’、Ｈｂ、Ｈｂ’ −排気段差Ｒ・・・レギ
ュレータ Ｈ・・・隙間藪
に′）の
「０ 「０Fig. 1 is a side view showing an embodiment of the present invention and a block diagram showing a measurement system, Fig. 2 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 3 is a right side view of Fig. 1. , Figure 4 is an explanatory diagram showing the change in the gap between the jet hole and the effective diameter mask, Figure 5
The figure is an explanatory diagram showing the positional relationship of the pointer on the scale plate of the measuring instrument, Figure 6 is a pneumatic circuit diagram showing the basic principle of the measuring instrument,
Fig. 7 is a partial vertical sectional side view of a known device for measuring the single effective diameter of a female thread, Fig. 8 is a sectional view taken along the line ■-■ in Fig. 7, and Fig. 9 is a known device similar to Fig. 7.8. An explanatory diagram of the method for measuring the single effective diameter of a female thread in the example, Figure 10 is the line X in Figure 9.
It is a sectional view along X. 1...Threaded nozzle body 2...Thread thread 3...Male thread part 4...Guiding part 5...Effective diameter master 7...Flank surface 8a 8a 8b 8b 9a 9a 9b 9b 10... Flange portion 12...Joint 14...Filter 16...Auxiliary air passage 18...Base is stand 20...Pointer 21a 21a 21b 21b 22...Magnification adjustment diaphragm 24...Pneumatic circuit 26... ... Shet hole 28 ... Female thread part 30 ... Thread 32 ... Top 34 ... Groove 36 ... Flank 38 ... Thread of device ... Shet hole ... Air escape groove 11...Main air passage 13...Measuring instrument 15...Air source 17...Plug 19...Scale plate 6...Shaft part...Sierra L-plane 23...Zero point adjustment Aperture 25...display section 27...flank surface 29...trough 31...retainer 33...shutter 35...thread to be measured 37...nozzle 39...for fluid medium Passage Ha, Ha', Hb, Hb' - Exhaust step R...Regulator H...in the gap ')'0 "0"
Claims (1)
グゲージのねじ山に相当するように形成された雄ねじ部
と、該雄ねじ部の１つのねじ山の両側フランク面対称位
置の２個所、及び該２個所の軸心方向対称位置の計４個
所に穿設されたジェット穴と、前記２個所一組のジェッ
ト穴を挟んで、前記雄ねじ部の軸線方向に方向に平行し
て形成される対の空気逃げ溝と、前記軸部の軸線上に穿
設されて前記ジェット穴に圧力空気を供給するための空
気供給路を形成してなることを特徴とする雌ねじの有効
径検査装置。 ２ 軸部の周囲に被測定雌ねじに対応する通りねじプラ
グゲージのねじ山に相当するように形成された雄ねじ部
と、該雄ねじ部の１つのねじ山の両側フランク面対称位
置の２個所、及び該２個所の軸心方向対称位置の計４個
所に穿設されたジェット穴と、前記２個所一組のジェッ
ト穴を挟んで、前記雄ねじ部の軸線方向に方向に平行し
て形成される対の空気逃げ溝と、前記軸部の軸線上に穿
設されて前記ジェット穴に圧力空気を供給するための空
気供給路と、前記各ジェット穴の周囲に、前記空気逃げ
溝に通じる排気段差を形成してなることを特徴とする雌
ねじの有効径検査装置。[Scope of Claims] 1. A male threaded portion formed around the shaft portion so as to correspond to the thread of a threaded plug gauge corresponding to the female thread to be measured, and a flank surface symmetrical on both sides of one thread of the male threaded portion. jet holes drilled at two locations and axially symmetrical positions of the two locations, and a set of jet holes at the two locations, parallel to the axial direction of the male threaded portion. and a pair of air escape grooves formed as a pair of air escape grooves, and an air supply path bored on the axis of the shaft portion to supply pressurized air to the jet hole. Diameter inspection device. 2. A male threaded part formed around the shaft part to correspond to the thread of a threaded plug gauge corresponding to the female thread to be measured, and two symmetrical positions on both side flank surfaces of one thread of the male threaded part, and jet holes drilled at a total of four symmetrical positions in the axial direction of the two locations, and a pair formed parallel to the axial direction of the male threaded portion with a set of jet holes in the two locations sandwiched therebetween; an air escape groove, an air supply path bored on the axis of the shaft portion for supplying pressurized air to the jet hole, and an exhaust step connected to the air escape groove around each jet hole. An effective diameter inspection device for a female screw, characterized in that the effective diameter inspection device is formed by forming a female thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16042688A JPH0210105A (en) | 1988-06-28 | 1988-06-28 | Device for inspecting effective diameter of female screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16042688A JPH0210105A (en) | 1988-06-28 | 1988-06-28 | Device for inspecting effective diameter of female screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210105A true JPH0210105A (en) | 1990-01-12 |
Family
ID=15714673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16042688A Pending JPH0210105A (en) | 1988-06-28 | 1988-06-28 | Device for inspecting effective diameter of female screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210105A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006208116A (en) * | 2005-01-26 | 2006-08-10 | Osg Corp | Plug gauge |
| JP2008298422A (en) * | 2007-05-29 | 2008-12-11 | Nidec Tosok Corp | Internal diameter measuring nozzle |
| WO2017001378A1 (en) * | 2015-06-30 | 2017-01-05 | Siemens Aktiengesellschaft | Threaded gauge mandrel, threaded gauge, and method for testing a threaded test piece for over-and under-size |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4942708A (en) * | 1972-08-30 | 1974-04-22 | ||
| JPS6358705B2 (en) * | 1982-11-24 | 1988-11-16 |
-
1988
- 1988-06-28 JP JP16042688A patent/JPH0210105A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4942708A (en) * | 1972-08-30 | 1974-04-22 | ||
| JPS6358705B2 (en) * | 1982-11-24 | 1988-11-16 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006208116A (en) * | 2005-01-26 | 2006-08-10 | Osg Corp | Plug gauge |
| JP2008298422A (en) * | 2007-05-29 | 2008-12-11 | Nidec Tosok Corp | Internal diameter measuring nozzle |
| WO2017001378A1 (en) * | 2015-06-30 | 2017-01-05 | Siemens Aktiengesellschaft | Threaded gauge mandrel, threaded gauge, and method for testing a threaded test piece for over-and under-size |
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