JP3060688B2 - Mating clearance control processing method for assembled parts - Google Patents
Mating clearance control processing method for assembled partsInfo
- Publication number
- JP3060688B2 JP3060688B2 JP4007664A JP766492A JP3060688B2 JP 3060688 B2 JP3060688 B2 JP 3060688B2 JP 4007664 A JP4007664 A JP 4007664A JP 766492 A JP766492 A JP 766492A JP 3060688 B2 JP3060688 B2 JP 3060688B2
- Authority
- JP
- Japan
- Prior art keywords
- annular fitting
- clearance
- diameter
- fitting portion
- difference
- 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.)
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- Automatic Control Of Machine Tools (AREA)
- Turning (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、互いに組付けられる
二種類の組付部品を量産する場合の、それらの組付部品
の互いに嵌合される環状嵌合部の切削加工をそれぞれ行
うに際し用いて好適な、組付部品の嵌合クリアランス制
御加工方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mass-producing two kinds of assembled parts to be assembled with each other, for cutting the annular fitting portions of the assembled parts to be engaged with each other. The present invention relates to a method for controlling and fitting a fitting clearance of an assembled component.
【０００２】[0002]
【従来の技術】環状嵌合部を互いに嵌合されて互いに組
付けられる二種類の組付部品としては例えば、図４に示
す如き、自動車用ディファレンシャルギヤケースを構成
するための右側部品１と左側部品２とがあり、かかる部
品１，２を量産する場合の、その環状嵌合部1a，2aの切
削加工を行う際には従来、右側部品１専用に設定したＮ
Ｃ工作機械、例えばＮＣ旋盤に、図５（ａ）に示す如き
制御を行って、右側部品１を次々に加工させるととも
に、左側部品２専用に設定したＮＣ工作機械、例えばＮ
Ｃ旋盤に、図５（ｂ）に示す如き制御を行って、左側部
品２を次々に加工させる、という方法が採られていた。2. Description of the Related Art As shown in FIG. 4, there are two types of assembled parts in which an annular fitting part is fitted to each other and assembled to each other, for example, a right part 1 and a left part for forming a differential gear case for an automobile. In the case of mass-producing such components 1 and 2, when cutting the annular fitting portions 1 a and 2 a, the N which is conventionally set exclusively for the right component 1 is used.
5A, a C machine tool, for example, an NC lathe, controls the right part 1 one after another, and an NC machine tool set for exclusive use with the left part 2, for example, N
A method of performing control as shown in FIG. 5B on the C lathe to process the left part 2 one after another has been adopted.
【０００３】この図５（ａ）に示す制御では、あらかじ
め、右側部品１の環状嵌合部1aの、公差を加味した正規
寸法上下限の中央の径ＲH から所定量以内の寸法増減範
囲を補正不要範囲として、その所定量ＰR を設定すると
ともに、補正量の大きさとして、例えばその所定量ＰR
に概略等しい値ＡR を設定しておき、先ずステップ11
で、右側部品１専用のＮＣ旋盤に右側部品１の環状嵌合
部1aを所定の加工プログラムに基づいて加工させ、次い
でステップ12で、右側部品１の環状嵌合部1aの加工後の
内径ｙR を計測し、続くステップ13で、加工後の内径ｙ
R から右側部品１の環状嵌合部1aの寸法公差の中央径Ｒ
H を引くとともにその求めた値からさらに上記補正不要
範囲設定量ＰR を引いて、その演算の結果が正か否かを
判断し、正であれば加工後の内径ｙR が補正不要範囲か
ら正の方に外れているので、ステップ14で、補正量を−
ＡR として上記右側部品１専用のＮＣ旋盤に与えた後、
ステップ11に戻って次の右側部品１を加工させる。[0005] In the control shown in FIG. 5A, the range of dimensional change within a predetermined amount from the center diameter RH of the upper and lower limits of the regular dimension of the annular fitting portion 1a of the right part 1 in consideration of the tolerance is determined in advance. as the correction unnecessary range, and sets the predetermined amount P R, as the magnitude of the correction amount, for example, the predetermined amount P R
It has set up approximately equal value A R, the first step 11
Then, the NC lathe dedicated to the right part 1 is made to process the annular fitting part 1a of the right part 1 based on a predetermined machining program, and then, in step 12, the inner diameter y of the annular fitting part 1a of the right part 1 after processing. R is measured, and in the following step 13, the inner diameter y after processing
From R, the center diameter R of the dimensional tolerance of the annular fitting portion 1a of the right part 1
Pull from its calculated value further the correction unnecessary range set amount P R with catching H, and determines whether the result of the operation is positive, from the inner diameter y R correction unnecessary range after processing if positive In step 14, the amount of correction is
After given above right part 1 dedicated NC lathe as A R,
Returning to step 11, the next right part 1 is processed.
【０００４】一方上記ステップ13での演算の結果が正で
なければ、さらにステップ15で、加工後の内径ｙR から
右側部品１の環状嵌合部1aの寸法公差の中央径ＲH を引
くとともにその求めた値に上記補正不要範囲設定量ＰR
を加えて、その演算の結果が負か否かを判断し、負であ
れば加工後の内径ｙR が補正不要範囲から負の方に外れ
ているので、ステップ16で、補正量を＋ＡR として上記
右側部品１専用のＮＣ旋盤に与えた後、ステップ11に戻
って次の右側部品１を加工させる。なお、ステップ15で
の演算の結果が負でない場合は加工後の内径ｙR が補正
不要範囲内であるので、ステップ17で、補正量を０（補
正せず）として上記右側部品１専用のＮＣ旋盤に与えた
後、ステップ11に戻る。On the other hand if the result of the calculation in step 13 is positive, further at step 15, along with pulling the central diameter R H of the dimensional tolerance of the annular fitting portion 1a of the right component 1 from the inner diameter y R after processing the determined values the correction unnecessary range set amount P R
Was added, the result of the calculation is to determine negative or not, since the inner diameter y R after processing is out towards the correction unnecessary range negative if it is negative, at step 16, the correction amount + A R And then returns to step 11 to process the next right part 1. If the result of the calculation in step 15 is not negative, the inner diameter y R after machining is within the range where no correction is necessary. Therefore, in step 17, the correction amount is set to 0 (no correction) and the NC for the right-side component 1 is used. After giving to the lathe, return to step 11.
【０００５】従って上記制御によれば、ＮＣ旋盤に、加
工後の寸法を上記補正不要範囲内に維持するように右側
部品１の環状嵌合部1aを切削加工させることができ、左
側部品２の環状嵌合部2aの切削加工の場合についても、
図５（ｂ）に示すように、あらかじめ、その環状嵌合部
2aの、公差を加味した正規寸法上下限の中央の径ＬH か
ら所定量以内の寸法増減範囲を補正不要範囲として、そ
の所定量ＰL を設定するとともに、補正量の大きさとし
て、例えばその所定量ＰL に概略等しい値ＡL を設定し
ておき、ステップ21〜27で上記右側部品１の場合と同様
にして、加工後の内径ｙL に基づき、左側部品２専用に
設定したＮＣ旋盤の制御を行う。Therefore, according to the above control, the NC lathe can cut the annular fitting portion 1a of the right part 1 so as to maintain the dimension after processing within the above-mentioned unnecessary correction range. Also in the case of cutting of the annular fitting part 2a,
As shown in FIG. 5B, the annular fitting portion is
Of 2a, as a correction unnecessary range dimensions decrease range within a predetermined amount from the diameter L H in the middle of the normal size on the lower limit in consideration of the tolerance, and sets the predetermined amount P L, as the magnitude of the correction amount, for example, the have set up approximately equal value a L in a predetermined amount P L, as in the case at step 21-27 of the right part 1, based on the inner diameter y L after processing, NC lathe to the left side part 2 only Control.
【０００６】[0006]
【発明が解決しようとする課題】ところで、右側部品１
の環状嵌合部1aの内径と左側部品２の環状嵌合部2aの外
径とには、それぞれ35〜45μ程度の寸法公差が許容され
ているが、その一方、組付精度を高く維持するためには
嵌合クリアランスを10〜20μとする必要があり、上記寸
法公差で加工した部品１，２をそのまま嵌合させたので
は、かかる嵌合クリアランスを保証することができな
い。The right part 1
The inner diameter of the annular fitting portion 1a and the outer diameter of the annular fitting portion 2a of the left part 2 each have a dimensional tolerance of about 35 to 45 μ, but on the other hand, keep the assembly accuracy high. For this purpose, the fitting clearance needs to be 10-20 μm, and if the parts 1 and 2 machined with the above dimensional tolerances are fitted as they are, such fitting clearance cannot be guaranteed.
【０００７】これがため従来は、環状嵌合部1a，2aの公
差内の寸法を何ランクかに分けて、切削加工後の環状嵌
合部1a，2aの寸法をそれぞれ計測した結果から、加工後
の部品１，２を該当するランクに振り分けておき、上記
嵌合クリアランスが得られるようなランクの組合せに基
づいてそれらの部品１，２を選択的に嵌合させている
が、このような選択嵌合を行うと工数が嵩むため、それ
らの部品の製造コストが高くなるという問題があった。For this reason, conventionally, the dimensions within the tolerance of the annular fitting portions 1a and 2a are divided into several ranks, and the dimensions of the annular fitting portions 1a and 2a after cutting are measured. The components 1 and 2 are sorted into the corresponding ranks, and the components 1 and 2 are selectively fitted based on the combination of ranks that can obtain the fitting clearance. When the fitting is performed, the number of man-hours increases, so that there is a problem that the manufacturing cost of those parts increases.
【０００８】そして上記選択嵌合を不要とするために
は、寸法公差をさらに狭めて、その公差内に入れるため
環状嵌合部1a，2aを研削加工することも考えられるが、
研削加工は、切削加工と比較して設備費が嵩むとともに
一個当たりの加工に要する時間もかかるため、結局部品
の製造コストが高くなるという問題があった。In order to eliminate the need for the selective fitting, it is conceivable to further narrow the dimensional tolerance and grind the annular fitting portions 1a and 2a so as to fall within the tolerance.
Grinding has a problem in that the equipment cost is higher and the time required for processing per piece is longer than in the case of cutting, so that the manufacturing cost of parts eventually increases.
【０００９】[0009]
【課題を解決するための手段】この発明は、上記従来の
加工方法の課題を有利に解決した加工方法を提供するこ
とを目的とするものであり、この発明の組付部品の嵌合
クリアランス制御加工方法は、互いに組付けられる二種
類の組付部品を量産する場合の、それらの組付部品の互
いに嵌合される環状嵌合部の切削加工をそれぞれ行うに
際し、先に切削加工した前記組付部品の前記環状嵌合部
の加工後の径をそれぞれ測定し、前記測定した加工後の
径と、前記環状嵌合部の、公差を加味した正規寸法上下
限の中央の径との差をそれぞれ求め、また、前記測定し
た加工後の径間の嵌合クリアランスを求め、さらに、前
記求めた嵌合クリアランスと、クリアランス規格の中央
の値との差を求め、前記求めた嵌合クリアランスとクリ
アランス規格中央値との差が所定値を越えた場合に、前
記求めた加工後の径と公差中央径との差が大きい方の種
類の部品につき、加工する径を所定量補正して、以後の
部品の切削加工を行うことを特徴とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a processing method which advantageously solves the above-mentioned problems of the conventional processing method. In the case of mass-producing two types of assembled parts to be assembled with each other, the machining method includes the steps of: Measure the diameter after processing of the annular fitting portion of the attached part, and the difference between the measured diameter after processing and the center diameter of the upper and lower limits of the regular dimensions of the annular fitting portion taking into account the tolerance. Each obtained, and also determined the fitting clearance between the measured diameters after processing, further, the difference between the determined fitting clearance and the central value of the clearance standard was determined, the determined fitting clearance and clearance. Central specification Is larger than a predetermined value, the diameter to be processed is corrected by a predetermined amount for a part of the type in which the difference between the obtained diameter after processing and the tolerance center diameter is larger, and the subsequent cutting of the part is performed. It is characterized by processing.
【００１０】[0010]
【作用】かかる方法によれば、二種類の組付部品にそれ
ぞれ許容された寸法公差を充分に活用できるので、切削
加工でも、選択嵌合を行わずして環状嵌合部間の嵌合ク
リアランスが常に充分小さくなるように加工することが
でき、従って、低い製造コストで組付精度の高い部品を
製造することができる。According to this method, the dimensional tolerances allowed for the two types of assembled parts can be fully utilized, so that even in the cutting process, the fitting clearance between the annular fitting portions can be achieved without performing the selective fitting. Can always be processed to be sufficiently small, and therefore, a part with high assembling accuracy can be manufactured at a low manufacturing cost.
【００１１】[0011]
【実施例】以下に、この発明の実施例を図面に基づき詳
細に説明する。図１は、この発明の組付部品の嵌合クリ
アランス制御加工方法を、前記自動車用ディファレンシ
ャルギヤケースの右側部品と左側部品の量産の際の、そ
れらの環状嵌合部の切削加工に適用した一実施例の、実
施に用いる加工装置を例示する構成図であり、同図中１
は右側部品、1aはその環状嵌合部、２は左側部品、そし
て2aはその環状嵌合部をそれぞれ示し、これらの部品
１，２は、環状嵌合部1a，2aを互いに嵌合されて互いに
組付けられ、自動車用ディファレンシャルギヤケースを
構成する。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment in which the method for controlling the clearance of fitting of an assembled part according to the present invention is applied to the cutting of an annular fitting part in the mass production of the right and left parts of the differential gear case for an automobile. It is a block diagram which illustrates the processing apparatus used for implementation of an example, and 1 in FIG.
Is a right part, 1a is its annular fitting part, 2 is a left part, and 2a is its annular fitting part. These parts 1 and 2 have annular fitting parts 1a and 2a fitted to each other. They are assembled together to form a differential gear case for an automobile.
【００１２】また図１中31は右側部品１の環状嵌合部1a
の内径を計測するための通常の内径計測器、32は左側部
品２の環状嵌合部2aの外径を計測するための通常の外径
計測器、33は通常のマイクロコンピュータを具える演算
処理ユニット、41は右側部品１の加工専用の通常のＮＣ
旋盤、そして42は左側部品２の加工専用の通常のＮＣ旋
盤をそれぞれ示し、ここで上記演算処理ユニット33は、
機能的には第１〜第７の演算処理回路34〜39を構成して
いる。In FIG. 1, reference numeral 31 denotes an annular fitting portion 1a of the right part 1.
Is an ordinary inner diameter measuring instrument for measuring the inner diameter of the left part 2, 32 is an ordinary outer diameter measuring instrument for measuring the outer diameter of the annular fitting portion 2a of the left part 2, and 33 is an arithmetic processing comprising an ordinary microcomputer Unit, 41 is a normal NC dedicated to machining the right part 1
Lathe, and 42, a normal NC lathe dedicated to machining the left part 2, respectively, where the arithmetic processing unit 33 is
Functionally, it constitutes first to seventh arithmetic processing circuits 34 to 39.
【００１３】かかる加工装置にあっては、図２に示す如
くしてこの実施例の嵌合クリアランス制御加工方法を行
う。すなわちここでは、あらかじめ、右側部品１の環状
嵌合部1aの寸法公差ＲK およびそれを加味した正規寸法
上下限の中央の内径ＲH と、左側部品２の環状嵌合部2a
の寸法公差ＬK およびそれを加味した正規寸法上下限の
中央の外径ＬH と、右側部品１の環状嵌合部1aと左側部
品２の環状嵌合部2aとの間の嵌合クリアランスの規格の
中央の値ｚとを演算処理ユニット33に入力し、また図３
に示すように、そのクリアランス規格中央値ｚから所定
量以内の増減範囲を補正不要範囲として、その所定量Ｐ
を設定するとともに、補正量の大きさとして例えばその
所定量Ｐに概略等しい値ＡR ，ＡL を設定して、それら
の値を演算処理ユニット33に入力しておく。In such a processing apparatus, the fitting clearance control processing method of this embodiment is performed as shown in FIG. That Here, advance, and a central inner diameter R H of the dimensional tolerances R K and normal dimensionally limit in consideration its annular fitting portion 1a of the right part 1, the left side part 2 annular fitting portion 2a
Fitting clearance between the outer diameter L H middle of dimensional tolerances L K and normal dimensionally limit in consideration it an annular fitting portion 2a of the annular fitting portion 1a and the left part 2 of the right side part 1 of The central value z of the standard is input to the arithmetic processing unit 33, and FIG.
As shown in the figure, an increase / decrease range within a predetermined amount from the clearance standard median z is regarded as a correction unnecessary range and the predetermined amount P
Sets a correction amount of approximately equal as for example to the predetermined amount P size value A R, and set the A L, you should enter those values to the arithmetic processing unit 33.
【００１４】そして、先ずステップ51で、右側部品１専
用のＮＣ旋盤41に右側部品１の環状嵌合部1aを所定の加
工プログラムに基づいて加工させるとともに、左側部品
２専用のＮＣ旋盤42に右側部品２の環状嵌合部2aを所定
の加工プログラムに基づいて加工させ、次いでステップ
52で内径計測器31により、右側部品１の環状嵌合部1aの
加工後の内径ｙR を計測し、続くステップ53で第１演算
処理回路34により、その加工後の内径ｙR から右側部品
１の環状嵌合部1aの寸法公差の中央径ＲH を引いて差ｘ
R を求め（ｘR ＝ｙR −ＲH ）、この一方、ステップ54
で外径計測器32により、左側部品２の環状嵌合部2aの加
工後の外径ｙL を計測し、続くステップ55で第２演算処
理回路34により、その加工後の外径ｙL から左側部品２
の環状嵌合部2aの寸法公差の中央径ＬH を引いて差ｘL
を求め（ｘL ＝ｙL −ＬH ）、しかる後ステップ56で第
３演算処理回路36により、上記計測した環状嵌合部1aの
加工後の内径ｙR および環状嵌合部2aの加工後の外径ｙ
L の差を演算して嵌合クリアランスｙを求め（ｙ＝ｙR
−ｙL ）、続くステップ57でさらに第３演算処理回路36
により、その嵌合クリアランスｙと上記クリアランス規
格中央値ｚとの差ｃを求める（ｃ＝ｙ−ｚ）。In step 51, the NC lathe 41 for the right part 1 is made to process the annular fitting portion 1a of the right part 1 based on a predetermined machining program. The annular fitting portion 2a of the component 2 is machined based on a predetermined machining program, and then the step
The inner diameter measuring instrument 31 at 52, to measure the inside diameter y R after processing of the annular fitting portion 1a of the right part 1, followed by the first arithmetic processing circuit 34 in step 53, the right part from the inner diameter y R after processing The difference x is obtained by subtracting the center diameter RH of the dimensional tolerance of the annular fitting portion 1a.
Seeking R (x R = y R -R H), this one, step 54
In the outer diameter measuring instrument 32 measures the outer diameter y L after processing of the annular fitting portion 2a of the left part 2, the second arithmetic processing circuit 34 in the subsequent step 55, from the outer diameter y L after the processing Left part 2
The difference x L by subtracting the median diameter L H in the dimensional tolerances of the annular fitting portion 2a
(X L = y L -L H ), and then, at step 56, the third arithmetic processing circuit 36 calculates the measured inner diameter y R of the processed annular fitting portion 1a and the processed inner diameter y R of the annular fitting portion 2a. Outer diameter y of
Calculate the fitting clearance y by calculating the difference between L (y = y R
−y L ), and in the following step 57, the third arithmetic processing circuit 36
Then, a difference c between the fitting clearance y and the median value z of the clearance standard is obtained (c = yz).
【００１５】次いでここでは、ステップ58で第４演算処
理回路37により、上記の求めた差ｃと上記所定量Ｐとの
差が正（ｃ−Ｐ＞０）か否かを判断し、差ｃと所定量Ｐ
との差が正（ｃ−Ｐ＞０）の場合は、加工後のクリアラ
ンスｙが補正不要範囲から正の方に外れている（ｙ−ｚ
＞Ｐ）ことから、さらにステップ59で第５演算処理回路
38により、先に求めた差ｘR およびｘL の大小を比較
し、ｘR がｘL より大きい場合は（ｘR ＞ｘL ）、左側
部品２の環状嵌合部2aの外径ｙL よりも右側部品１の環
状嵌合部1aの加工後の内径ｙR の方が寸法公差の中央径
から大きく外れていることから、ステップ60で第７演算
処理回路40により、補正量を−ＡR として右側部品１専
用のＮＣ旋盤41に与えた後、ステップ51に戻って次の部
品１，２を加工させる。Next, here, in step 58, the fourth arithmetic processing circuit 37 determines whether or not the difference between the obtained difference c and the predetermined amount P is positive (c-P> 0). And the predetermined amount P
Is positive (c-P> 0), the clearance y after processing deviates from the correction unnecessary range in the positive direction (yz).
> P), furthermore, in step 59, the fifth arithmetic processing circuit
The 38 compares the magnitude of the differences obtained in advance x R and x L, x if R is greater than x L is (x R> x L), the outer diameter y L of the annular fitting portion 2a of the left part 2 since the direction of the inner diameter y R after processing of the annular fitting portion 1a of the right part 1 is largely deviated from the center diameter dimensional tolerances than by the seventh arithmetic processing circuit 40 in step 60, -A correction amount After being given as R to the NC lathe 41 dedicated to the right part 1, the process returns to step 51 to process the next parts 1 and 2.
【００１６】また上記ステップ59での判断の結果ｘR が
ｘL より大きくない場合は、ステップ61で第５演算処理
回路38により、さらにｘR とｘL とが等しいか否かを判
断して、ｘR とｘL とが等しくない、すなわちｘL がｘ
R より大きい場合は（ｘL ＞ｘR ）、右側部品１の環状
嵌合部1aの加工後の内径ｙR よりも左側部品２の環状嵌
合部2aの外径ｙL の方が寸法公差の中央径から大きく外
れていることから、ステップ64で第７演算処理回路40に
より、補正量を＋ＡL として左側部品２専用のＮＣ旋盤
42に与えた後、ステップ51に戻って次の部品１，２を加
工させる。[0016] If the result x R of the determination in step 59 is not greater than x L is the fifth arithmetic processing circuit 38 in step 61, it is determined whether further x R and the x L are equal , not equal and x R and x L, i.e. x L is x
If R is greater than the (x L> x R), the dimensional tolerance toward the outer diameter y L of the annular fitting portion 2a of the left part 2 than the inner diameter y R after processing of the annular fitting portion 1a of the right part 1 since it is greatly deviated from the median diameter, the seventh arithmetic processing circuit 40 in step 64, the left side part 2 dedicated NC lathe correction amount as + a L
After giving to 42, the process returns to step 51 to process the next parts 1 and 2.
【００１７】そして、上記ステップ61での判断の結果ｘ
R とｘL とが等しい場合は、ステップ62で第６演算処理
回路39により、環状嵌合部1aの寸法公差ＲK と環状嵌合
部2aの寸法公差ＬK との差ｗ（ｗ＝ＲK −ＬK ）を求
め、次いでステップ63で第６演算処理回路39により、さ
らにその差ｗの正負を判断し、ｗが正（ｗ＞０）の場合
は、左側部品２の環状嵌合部2aの寸法公差ＬK よりも右
側部品１の環状嵌合部1aの寸法公差ＲK の方が大きいこ
とから、ステップ60へ進んで第７演算処理回路40によ
り、補正量を−ＡR として右側部品１専用のＮＣ旋盤41
に与えた後、ステップ51に戻って次の部品１，２を加工
させ、ｗが正でない（ｗ≦０）場合は、右側部品１の環
状嵌合部1aの寸法公差ＲK よりも左側部品２の環状嵌合
部2aの寸法公差ＬK の方が大きいか、もしくはそれらが
等しいことから、ステップ64へ進んで第７演算処理回路
40により、補正量を＋ＡL として左側部品２専用のＮＣ
旋盤42に与えた後、ステップ51に戻って次の部品１，２
を加工させる。Then, as a result x of the judgment at the above step 61,
If the R and x L are equal, by the sixth arithmetic processing circuit 39 in step 62, the difference between the dimensional tolerance L K dimensional tolerances R K and the annular fitting portion 2a of the annular fitting portion 1a w (w = R K− L K ), and then, in step 63, the sixth arithmetic processing circuit 39 further determines whether the difference w is positive or negative. If w is positive (w> 0), the annular fitting portion of the left part 2 is determined. since greater in dimensional tolerances R K of the annular fitting portion 1a of the right part 1 than the dimensional tolerances L K of 2a, the seventh arithmetic processing circuit 40 proceeds to step 60, the right amount of correction as -A R NC lathe 41 dedicated to part 1
After giving the returns to step 51 to process the next component 1, 2, w is not positive (w ≦ 0) case, the left part than the dimensional tolerances R K of the annular fitting portion 1a of the right part 1 Since the dimensional tolerance L K of the second annular fitting portion 2a is larger or equal, the process proceeds to step 64 and proceeds to the seventh arithmetic processing circuit.
By 40, the left part 2 only the correction amount as a + A L NC
After giving to the lathe 42, the process returns to the step 51 and the next parts 1, 2
Is processed.
【００１８】この一方、ステップ58での判断の結果、差
ｃと所定量Ｐとの差が正でない場合は、ステップ65へ進
んで第４演算処理回路37により、さらに上記の求めた差
ｃと所定量Ｐとの和が負（ｃ＋Ｐ＜０）か否かを判断
し、負であれば加工後のクリアランスｙが補正不要範囲
から負の方に外れている（ｙ−ｚ＜−Ｐ）ことから、ス
テップ66へ進んで第５演算処理回路38により、先に求め
た差ｘR およびｘL の大小を比較し、ｘR がｘL より大
きい場合は（ｘR ＞ｘL ）、左側部品２の環状嵌合部2a
の外径ｙL よりも右側部品１の環状嵌合部1aの加工後の
内径ｙR の方が寸法公差の中央径から大きく外れている
ことから、ステップ67で第７演算処理回路40により、補
正量を−ＡR として右側部品１専用のＮＣ旋盤41に与え
た後、ステップ51に戻って次の部品１，２を加工させ
る。On the other hand, if the result of the determination at step 58 is that the difference between the difference c and the predetermined amount P is not positive, the routine proceeds to step 65, where the fourth arithmetic processing circuit 37 further calculates the difference c It is determined whether or not the sum with the predetermined amount P is negative (c + P <0). If the sum is negative, the clearance y after processing is out of the correction unnecessary range in the negative direction (y−z <−P). from the fifth arithmetic processing circuit 38 proceeds to step 66, and compares the difference calculated above x R and x L, x if R is greater than x L is (x R> x L), the left part 2 annular fitting part 2a
Since the direction of the inner diameter y R after processing of the annular fitting portion 1a of the right part 1 than the outer diameter y L is far off from the center diameter of the dimensional tolerance, the seventh arithmetic processing circuit 40 in step 67, after giving the right part 1 dedicated NC lathe 41 a correction amount as -A R, the process returns to step 51 to process the following components 1 and 2.
【００１９】また上記ステップ66での判断の結果ｘR が
ｘL より大きくない場合は、ステップ68で第５演算処理
回路38により、さらにｘR とｘL とが等しいか否かを判
断して、ｘR とｘL とが等しくない、すなわちｘL がｘ
R より大きい場合は（ｘL ＞ｘR ）、右側部品１の環状
嵌合部1aの加工後の内径ｙR よりも左側部品２の環状嵌
合部2aの外径ｙL の方が寸法公差の中央径から大きく外
れていることから、ステップ71で第７演算処理回路40に
より、補正量を−ＡL として左側部品２専用のＮＣ旋盤
42に与えた後、ステップ51に戻って次の部品１，２を加
工させる。[0019] If the result x R of the determination in step 66 is not greater than x L is the fifth arithmetic processing circuit 38 in step 68, it is determined whether further x R and the x L are equal , not equal and x R and x L, i.e. x L is x
If R is greater than the (x L> x R), the dimensional tolerance toward the outer diameter y L of the annular fitting portion 2a of the left part 2 than the inner diameter y R after processing of the annular fitting portion 1a of the right part 1 from that deviates significantly from the median diameter, the seventh arithmetic processing circuit 40 in step 71, the left side part 2 dedicated NC lathe correction amount as -A L
After giving to 42, the process returns to step 51 to process the next parts 1 and 2.
【００２０】そして、上記ステップ68での判断の結果ｘ
R とｘL とが等しい場合は、ステップ69で第６演算処理
回路39により、環状嵌合部1aの寸法公差ＲK と環状嵌合
部2aの寸法公差ＬK との差ｗ（ｗ＝ＲK −ＬK ）を求
め、次いでステップ70で第６演算処理回路39により、さ
らにその差ｗの正負を判断し、ｗが正（ｗ＞０）の場合
は、左側部品２の環状嵌合部2aの寸法公差ＬK よりも右
側部品１の環状嵌合部1aの寸法公差ＲK の方が大きいこ
とから、ステップ67へ進んで第７演算処理回路40によ
り、補正量を＋ＡR として右側部品１専用のＮＣ旋盤41
に与えた後、ステップ51に戻って次の部品１，２を加工
させ、ｗが正でない（ｗ≦０）場合は、右側部品１の環
状嵌合部1aの寸法公差ＲK よりも左側部品２の環状嵌合
部2aの寸法公差ＬK の方が大きいか、もしくはそれらが
等しいことから、ステップ71へ進んで第７演算処理回路
40により、補正量を−ＡL として左側部品２専用のＮＣ
旋盤42に与えた後、ステップ51に戻って次の部品１，２
を加工させる。Then, the result x of the judgment at step 68 is x
If the R and x L are equal, by the sixth arithmetic processing circuit 39 in step 69, the difference between the dimensional tolerance L K dimensional tolerances R K and the annular fitting portion 2a of the annular fitting portion 1a w (w = R K− L K ), and then, in step 70, the sixth arithmetic processing circuit 39 further determines whether the difference w is positive or negative. If w is positive (w> 0), the annular fitting portion of the left part 2 is determined. since greater in dimensional tolerances R K of the annular fitting portion 1a of the right part 1 than the dimensional tolerances L K of 2a, the seventh arithmetic processing circuit 40 proceeds to step 67, the right part of the correction amount as a + a R 1 dedicated NC lathe 41
After giving the returns to step 51 to process the next component 1, 2, w is not positive (w ≦ 0) case, the left part than the dimensional tolerances R K of the annular fitting portion 1a of the right part 1 Since the dimensional tolerance L K of the second annular fitting portion 2a is larger or equal, the process proceeds to step 71 and proceeds to the seventh arithmetic processing circuit.
By 40, the correction amount left part 2 only as -A L NC
After giving to the lathe 42, the process returns to the step 51 and the next parts 1, 2
Is processed.
【００２１】さらに、上記ステップ65での判断の結果、
差ｃと所定量Ｐとの和が負でない場合は、加工後のクリ
アランスｙが補正不要範囲内（−Ｐ≦ｙ−ｚ≦＋Ｐ）で
あることから、ステップ72で第７演算処理回路40によ
り、補正量を０（補正せず）として右側部品１専用のＮ
Ｃ旋盤41および左側部品２専用のＮＣ旋盤42にそれぞれ
与えた後、ステップ51に戻って次の部品１，２を加工さ
せる。Further, as a result of the determination in step 65,
If the sum of the difference c and the predetermined amount P is not negative, the clearance y after the processing is within the range not requiring correction (−P ≦ yz ≦ + P). , The correction amount is set to 0 (no correction), and the N
After being given to the C lathe 41 and the NC lathe 42 dedicated to the left part 2, respectively, the process returns to step 51 to process the next parts 1 and 2.
【００２２】上述の如くしてこの実施例の方法によれ
ば、求めた加工後の径ｙR ，ｙL と公差中央径ＲH ，Ｌ
H との差ｘR ，ｘL を比較して、その差が大きい方の種
類の部品につき、加工する径を所定量±ＡR または±Ａ
L だけ補正することにより、右側部品１と左側部品２と
の二種類の組付部品にそれぞれ許容された寸法公差を充
分に活用できるので、ＮＣ旋盤41, 42による切削加工で
も、選択嵌合を行わずして環状嵌合部間の嵌合クリアラ
ンスｙが常に充分小さくなるように加工することがで
き、従って、低い製造コストで組付精度の高い部品１，
２を製造することができる。As described above, according to the method of this embodiment, the determined diameters y R and y L after processing and the center diameters R H and L of the tolerances are obtained.
The difference between the H x R, x L by comparing, per type of part towards the difference is large, a predetermined amount of size to be processed ± A R or ± A
By correcting by L, the dimensional tolerances allowed for the two types of assembled parts, the right part 1 and the left part 2, can be fully utilized, so that even when cutting with the NC lathes 41 and 42, selective fitting can be performed. Without this, it is possible to process the fitting clearance y between the annular fitting portions so as to always be sufficiently small, and therefore, a component 1 having a high assembly accuracy at a low manufacturing cost.
2 can be manufactured.
【００２３】しかもこの実施例の方法によれば、差
ｘR ，ｘL が互いに等しい場合には、環状嵌合部1aの寸
法公差ＲK と環状嵌合部2aの寸法公差ＬK を比較して、
寸法公差が大きい方の種類の部品につき加工する径を補
正するので、二種類の組付部品にそれぞれ許容された寸
法公差をさらに活用することができる。[0023] Moreover, according to the method of this embodiment, the difference x R, if x L are equal to each other, to compare the dimensional tolerance L K dimensional tolerances R K and the annular fitting portion 2a of the annular fitting portion 1a hand,
Since the diameter to be machined is corrected for the type of component having the larger dimensional tolerance, the dimensional tolerance allowed for each of the two types of assembled components can be further utilized.
【００２４】以上、図示例に基づき説明したが、この発
明は上述の例に限定されるものでなく、例えば上記実施
例では補正量の絶対値を一定値Ａ，ＡL としたが、嵌合
クリアランスｙとクリアランス規格中央値ｚとの差ｃを
１／ａ（ａは以上の任意数）倍した値ｃ／ａを補正量の
絶対値としても良い。The above has been explained with reference to the illustrated examples, the invention is not limited to the examples described above, for example, a constant value A to the absolute value of the correction amount in the above embodiment, although the A L, fitting The absolute value of the correction amount may be a value c / a obtained by multiplying the difference c between the clearance y and the clearance standard median z by 1 / a (a is an arbitrary number as described above).
【００２５】[0025]
【発明の効果】かくしてこの発明の嵌合クリアランス制
御加工方法によれば、二種類の組付部品にそれぞれ許容
された寸法公差を充分に活用できるので、切削加工で
も、選択嵌合を行わずして環状嵌合部間の嵌合クリアラ
ンスが常に充分小さくなるように加工することができ、
従って、低い製造コストで組付精度の高い部品を製造す
ることができる。As described above, according to the fitting clearance control processing method of the present invention, the dimensional tolerance allowed for each of the two kinds of assembled parts can be sufficiently utilized, so that the selective fitting is not performed even in the cutting processing. It can be processed so that the fitting clearance between the annular fitting parts is always sufficiently small,
Therefore, parts with high assembling accuracy can be manufactured at low manufacturing cost.
【図１】この発明の組付部品の嵌合クリアランス制御加
工方法を、自動車用ディファレンシャルギヤケースを構
成する右側部品と左側部品の環状嵌合部の切削加工に適
用した一実施例の、実施に用いる加工装置を例示する構
成図である。FIG. 1 is a diagram illustrating an embodiment in which a method of controlling fitting clearance of an assembled component according to the present invention is applied to cutting of an annular fitting portion between a right component and a left component of a differential gear case for an automobile. FIG. 2 is a configuration diagram illustrating a processing apparatus.
【図２】上記実施例の嵌合クリアランス制御加工方法の
手順を示すフローチャートである。FIG. 2 is a flowchart showing a procedure of a fitting clearance control processing method of the embodiment.
【図３】上記実施例の嵌合クリアランス制御加工方法に
おけるクリアランス規格中央値と補正不要範囲設定量と
を示す説明図である。FIG. 3 is an explanatory diagram showing a clearance standard median value and a correction unnecessary range setting amount in the fitting clearance control processing method of the embodiment.
【図４】環状嵌合部を互いに嵌合されて互いに組付けら
れる二種類の組付部品の例としての、自動車用ディファ
レンシャルギヤケースを構成する右側部品と左側部品を
示す断面図である。FIG. 4 is a cross-sectional view showing a right component and a left component constituting a differential gear case for an automobile as examples of two types of assembled components in which an annular fitting portion is fitted to each other and assembled to each other.
【図５】（ａ）および（ｂ）は従来の環状嵌合部寸法制
御加工方法をそれぞれ示すフローチャートである。5 (a) and 5 (b) are flowcharts showing a conventional method for controlling the size of an annular fitting portion, respectively.
１ 右側部品 1a 環状嵌合部 ２ 左側部品 2a 環状嵌合部 31 環状嵌合部1a用内径計測器 32 環状嵌合部2a用外径計測器 33 演算処理ユニット 34 第１演算処理回路 35 第２演算処理回路 36 第３演算処理回路 37 第４演算処理回路 38 第５演算処理回路 39 第６演算処理回路 40 第７演算処理回路 41 右側部品１の加工専用ＮＣ旋盤 42 左側部品２の加工専用ＮＣ旋盤 ＲK 右側部品１の環状嵌合部1aの寸法公差 ＲH 環状嵌合部1aの正規寸法上下限の中央の内径 ＬK 左側部品２の環状嵌合部2aの寸法公差 ＬH 環状嵌合部2aの正規寸法上下限の中央の外径 ｚ 環状嵌合部1aと環状嵌合部2aとの嵌合クリアランス
規格中央値 Ｐ 補正不要範囲設定量 ＡR ＮＣ旋盤41の補正量の絶対値 ＡL ＮＣ旋盤42の補正量の絶対値 ｙR 環状嵌合部1aの加工後内径 ｙL 環状嵌合部2aの加工後外径 ｘR 加工後内径ｙR から公差中央径ＲH を引いた差（ｘ
R ＝ｙR −ＲH ） ｘL 加工後外径ｙL から公差中央径ＬH を引いた差（ｘ
L ＝ｙL −ＬH ） ｙ 嵌合クリアランス（ｙ＝ｙR −ｙL ） ｃ 嵌合クリアランスｙとクリアランス規格中央値ｚと
の差（ｃ＝ｙ−ｚ） ｗ 寸法公差ＲK と寸法公差ＬK との差（ｗ＝ＲK −Ｌ
K ）Reference Signs List 1 right part 1a annular fitting part 2 left part 2a annular fitting part 31 inner diameter measuring instrument for annular fitting part 1a 32 outer diameter measuring instrument for annular fitting part 2a 33 arithmetic processing unit 34 first arithmetic processing circuit 35 second Arithmetic Processing Circuit 36 Third Arithmetic Processing Circuit 37 Fourth Arithmetic Processing Circuit 38 Fifth Arithmetic Processing Circuit 39 Sixth Arithmetic Processing Circuit 40 Seventh Arithmetic Processing Circuit 41 NC lathe dedicated to machining right part 1 42 NC dedicated to machining left part 2 Lathe R K Dimensional tolerance of annular fitting part 1a of right side part 1 RH Center inner diameter of upper and lower limits of regular dimension of annular fitting part 1a L K Dimensional tolerance of annular fitting part 2a of left side part 2 L H annular fitting absolute value a of the correction amount of the engagement clearance standard median P not requiring correction range setting amount a R NC lathe 41 with the central outer diameter z annular fitting portion 1a and the annular fitting portion 2a of normal size on lower parts 2a L after processing the outer diameter of the NC lathe 42 of the correction amount of the absolute value y after processing the inside diameter of the R annular fitting portion 1a y L annular engaging portion 2a Minus the R post-machining the inner diameter y R tolerances median diameter R H (x
R = y R -R H) x L after processing outer diameter y L minus a tolerance median diameter L H from (x
L = y L -L H) y fitting clearance (y = y R -y L) difference between c fitting clearance y and clearance specifications median z (c = y-z) w tolerances R K and dimensional tolerance the difference between the L K (w = R K -L
K )
Claims (1)
（１，２）を量産する場合の、それらの組付部品の互い
に嵌合される環状嵌合部（1a，2a）の切削加工をそれぞ
れ行うに際し、 先に切削加工した前記組付部品の前記環状嵌合部の加工
後の径（ｙR ，ｙL ）をそれぞれ測定し、 前記測定した加工後の径と、前記環状嵌合部の、公差を
加味した正規寸法上下限の中央の径（ＲH ，ＬH ）との
差（ｘR ，ｘL ）をそれぞれ求め、 また、前記測定した加工後の径間の嵌合クリアランス
（ｙ）を求め、 さらに、前記求めた嵌合クリアランスと、クリアランス
規格の中央の値（ｚ）との差（ｃ）を求め、 前記求めた嵌合クリアランスとクリアランス規格中央値
との差が所定値（Ｐ）を越えた場合に、前記求めた加工
後の径と公差中央径との差が大きい方の種類の部品につ
き、加工する径を所定量（ＡR ，ＡL ）補正して、以後
の部品の切削加工を行うことを特徴とする、組付部品の
嵌合クリアランス制御加工方法。When mass-producing two kinds of assembled parts (1, 2) to be assembled with each other, the annular fitting portions (1a, 2a) of the assembled parts to be engaged with each other are cut. when performing each diameter after machining of the annular fitting portion of the biasing assembly components machined previously (y R, y L) was measured, and the diameter after processing that the measured, the annular fitting portion of, calculated central diameter (R H, L H) of the normal size on the lower limit in consideration of the tolerance difference between (x R, x L), respectively, also span the fitting clearance after processing that the measured ( y) is determined, and a difference (c) between the determined fitting clearance and the median value (z) of the clearance standard is determined. The difference between the determined fitting clearance and the median clearance standard is a predetermined value. When the value exceeds (P), the difference between the obtained diameter after processing and the central diameter of the tolerance is large. A method for controlling the clearance of fitting of an assembled part, wherein the processing diameter is corrected by a predetermined amount (A R , A L ) for the other type of part, and the subsequent part is cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007664A JP3060688B2 (en) | 1992-01-20 | 1992-01-20 | Mating clearance control processing method for assembled parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007664A JP3060688B2 (en) | 1992-01-20 | 1992-01-20 | Mating clearance control processing method for assembled parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05192846A JPH05192846A (en) | 1993-08-03 |
| JP3060688B2 true JP3060688B2 (en) | 2000-07-10 |
Family
ID=11672083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4007664A Expired - Fee Related JP3060688B2 (en) | 1992-01-20 | 1992-01-20 | Mating clearance control processing method for assembled parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3060688B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19822204A1 (en) | 1998-05-18 | 1999-11-25 | Scharwaechter Ed Gmbh | Machine assembly process for turning links such as vehicle door hinges |
| DE102016221046A1 (en) * | 2016-10-26 | 2018-04-26 | Schaeffler Technologies AG & Co. KG | Process for the production of bearing components, as well as manufacturing plant and rolling or plain bearings |
-
1992
- 1992-01-20 JP JP4007664A patent/JP3060688B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05192846A (en) | 1993-08-03 |
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