JPS6186628A - Dynamic balancing machine - Google Patents
Dynamic balancing machineInfo
- Publication number
- JPS6186628A JPS6186628A JP20896884A JP20896884A JPS6186628A JP S6186628 A JPS6186628 A JP S6186628A JP 20896884 A JP20896884 A JP 20896884A JP 20896884 A JP20896884 A JP 20896884A JP S6186628 A JPS6186628 A JP S6186628A
- Authority
- JP
- Japan
- Prior art keywords
- under test
- body under
- unbalance
- rotation
- center
- 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.)
- Granted
Links
- 238000003754 machining Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 abstract description 22
- 239000013598 vector Substances 0.000 abstract description 16
- 238000012937 correction Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010002 mechanical finishing Methods 0.000 description 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/24—Performing balancing on elastic shafts, e.g. for crankshafts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Balance (AREA)
- Drilling And Boring (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は動つりあい試験機に関し、更に詳しくは、例え
ばクランクシャフト等の、鍛造品又は鋳造品等の、機械
的仕上加工を施す前の回転体について、不つりあいを生
じさせないような両端センタ孔加工位置を指示し得る機
能を有した動つりあい試験機に関する。Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a dynamic balance testing machine, and more specifically, to a dynamic balance testing machine for testing forged or cast products, such as crankshafts, before mechanical finishing. The present invention relates to a dynamic balance tester having a function of instructing the machining position of center holes at both ends of a rotating body so as not to cause unbalance.
（ロ）従来技術
一般に、クランクシャフト等においては、鍛造や鋳造加
工された素材の両端にセンタ孔の加工を行い、それを基
準にして機械的な仕上加工が行なわれる。クランクシャ
フト等のように、カウンタウェイト部等の最終的に機械
加工が施されない部分の多い回転体については、センタ
孔の加工位置が、機械加工後の完成品の初期下つりあい
に大きく影響する。センタ孔の加工を適宜の位置に施せ
ば、仕上がった製品の不つりあいを所定値以内に収める
ことができる。(b) Prior Art In general, for crankshafts and the like, a center hole is machined at both ends of a forged or cast material, and mechanical finishing is performed based on the center hole. For rotating bodies such as crankshafts that have many parts that are not ultimately machined, such as counterweight parts, the position of the center hole to be machined has a large effect on the initial downward balance of the finished product after machining. By machining the center hole at an appropriate position, the unbalance of the finished product can be kept within a predetermined value.
従来、このようなセンタ孔加工位置を求める為には、マ
スセンタリングマシンと称される専用機を必要としてい
た。マスセンタリングマシンは、センタ孔加工前の素材
を装着してこれを慣性主軸に沿うようその回転軸を変化
させ、穿つべきセンタ孔の位置を求めるもので、極めて
大掛りな装置となる。Conventionally, in order to determine such a center hole processing position, a special machine called a mass centering machine was required. A mass centering machine is an extremely large-scale device that attaches a material before drilling a center hole and changes its axis of rotation to align with the main axis of inertia to determine the position of the center hole to be drilled.
（ハ）目的
本発明の目的は、供試体の不つりあいを測定する動つり
あい試験機にあって、上述の如きセンタ孔加工位置を指
示し得る機能を有し、もってマスセンタリングマシン等
の専用機を不要とする動つりあい試験機を提供すること
にある。(c) Purpose An object of the present invention is to provide a dynamic balance tester for measuring unbalance of a specimen, which has a function of instructing the center hole machining position as described above, and which is suitable for special purpose machines such as mass centering machines. The purpose of the present invention is to provide a dynamic balance tester that does not require .
（ニ）発明の原理
一般に、鍛造状態でのクランクシャフトの慣性主軸上に
両端センタ孔を穿ち、そのセンタ孔を基準に機械加工を
施すと、加工後の初期率っりあいは、ジャーナル部の幾
何学的中心位置にセンタ孔を穿って加工した場合に比べ
て、その値は相当小さくなる。(d) Principle of the invention Generally, when a center hole is drilled at both ends on the main axis of inertia of a crankshaft in a forged state, and machining is performed using the center hole as a reference, the initial balance after machining is The value is considerably smaller than when processing is performed by drilling a center hole at the geometric center position.
また、同一種、特に同一ロットの鍛造後のクランクシャ
フトについて、ジャーナル部の幾何学的中心位置にセン
タ孔を穿って機械加工した場合、その初期率つりあいの
方向はほぼ同一方向を示す。Further, when forged crankshafts of the same type, especially of the same lot, are machined by drilling a center hole at the geometric center position of the journal portion, the direction of the initial rate balance is approximately the same.
本発明の原理は、上記二点に立脚している。すなわち、
同一ロフト等の鍛造品の任意のものに、幾何学的なジャ
ーナルの中心位置等の任意位置に両端センタ孔を穿ち、
そのセンタ孔を基準に機械加工を施し、そのものの慣性
主軸に対する両端センタ孔とのずれを測定できれば、以
後の同一ロフト等の鍛造品についてのセンタ孔位置を、
その測定値に基づいてずらせることにより、機械加工後
の初期率つりあいを所定の大きさ以下に収めることがで
きる。The principle of the present invention is based on the above two points. That is,
Drill a center hole at both ends of any forged product such as the same loft at any position such as the center position of the geometric journal,
If you can perform machining based on the center hole and measure the deviation between the center holes at both ends relative to the main axis of inertia, you can determine the center hole position for future forged products such as the same loft.
By shifting based on the measured value, the initial ratio balance after machining can be kept within a predetermined value.
（ホ）構成
本発明の特徴とするところは、動っりあい試験により得
られた任意の修正面上での不っりあいヘルトル（量と角
度）から、供試体の左右両端面上における供試体の回転
中心軸と慣性主軸とのずれの量と方向を演算する回路を
備えたことにある。(E) Structure A feature of the present invention is that the amount and angle of the unbalanced Hertl on any corrected surface obtained by the dynamic movement test is determined from the The reason is that it is equipped with a circuit that calculates the amount and direction of the deviation between the rotation center axis of the specimen and the principal axis of inertia.
（へ）実施例
本発明の実施例を、以下、図面に基づいてその測定原理
とともに述べる。(F) Embodiments Examples of the present invention will be described below along with its measurement principles based on the drawings.
第１図は本発明実施例の構成図である。FIG. 1 is a block diagram of an embodiment of the present invention.
被試験体は左右の軸受ＩＬ、ＩＲによって支承され、図
示しない回転駆動機構によって回転が与えられる。その
回転により生ずる不っりあい信号は、左右の軸受ＩＬ、
ＩＲ部に設けられた検出器２Ｌ、２Ｒによって検出され
る。また、被試験体に付されたマーク等をフォトセル３
によって検出することにより、被試験体の回転位相が検
出される。検出器２Ｌ、 ２’ａ、およびフォトセル
３の出力は、動つりあい測定回路４に導入され、ここで
公知の演算を施すことにより、被試験体に設定された左
右の修正面１．）−上における不つりあいベクトルＷｌ
、Ｗｒが導出される。この不つりあいベクトルＷｔ
、 Ｗｐ−は、表示器に表示されるとともに、センタ孔
位置演算回路５に導入されるよう構成されている。The test object is supported by left and right bearings IL and IR, and is rotated by a rotation drive mechanism (not shown). The unbalance signal generated by the rotation is transmitted to the left and right bearings IL,
It is detected by detectors 2L and 2R provided in the IR section. In addition, the marks etc. attached to the test object can be transferred to the photocell 3.
By detecting this, the rotational phase of the test object is detected. The outputs of the detectors 2L, 2'a, and photocell 3 are introduced into a motion balance measurement circuit 4, where they are subjected to known calculations to determine the left and right correction planes 1. ) - unbalance vector Wl on
, Wr are derived. This unbalance vector Wt
, Wp- are displayed on the display and are also introduced into the center hole position calculation circuit 5.
次に、センタ孔位置演算回路５における演算内容を、本
発明実施例の使用方法とともに述べる。Next, the contents of the calculation in the center hole position calculation circuit 5 will be described together with the method of using the embodiment of the present invention.
先ず、同一ロフト等の鍛造状態でのクランクシャフト等
から任意の一本を抽出し、例えばセンタ孔加工機等によ
って両端のジャーナル部の幾何学的中心にそれぞれセン
タ孔を穿ち、そのセンタ孔を基準として機械加工を施す
。このように加工されたクランクシャフト等を被試験体
として本発明実施例を駆動する。First, extract an arbitrary crankshaft from a forged crankshaft with the same loft, etc., use a center hole processing machine, etc., to drill a center hole at the geometric center of the journal portions at both ends, and use the center hole as a reference. Machining is performed as follows. The embodiment of the present invention is driven by using the thus processed crankshaft and the like as a test object.
センタ孔位置演算回路５は、上述の試験により得られた
被試験体の左右の修正面上での不っりあいベクトルｗｚ
、 Ｗｒ−を入力して、以下に示す手順で演算を施す
。The center hole position calculation circuit 5 calculates the disparity vector wz on the left and right correction surfaces of the test object obtained by the above-mentioned test.
, Wr- are input, and the calculation is performed according to the procedure shown below.
まず、左右の修正面上での不っりあいベクトルＷｔ 、
Ｗｒは、被試験体をその回転軸方向に左右に二分した
左右の重心位置上での不っりあいベクトルＷＬ 、 ｙ
丸に換算される。これは、第２図に示す如く、例えば被
試験体の左端面からの左修正面、右修正面、左重心およ
び右重心までの距離を。First, the disparity vector Wt on the left and right correction planes,
Wr is the unbalance vector WL, y on the left and right center of gravity positions of the test object divided into left and right in the direction of its rotation axis.
Converts to a circle. As shown in FIG. 2, this means, for example, the distance from the left end surface of the test object to the left correction surface, right correction surface, left center of gravity, and right center of gravity.
それぞれｌ、ｒ、ＬおよびＲとすると、下記の（１）。Letting l, r, L and R respectively, the following (1).
（２）式に示す力平衡、モーメント平衡の関係から求め
ることができる。It can be determined from the force balance and moment balance relationships shown in equation (2).
ｗ、 ＋ｗｒ＋Ｗ、 ＋ＷＲ＝Ｏ−＜１）ｗＬ −
ｅ ＋ｗ、 ・ｒ ＋ｗＬ −Ｌ＋ｗＲＨＲ＝０次に
、左右の重心位置における不っりあいベクトルｗＬ、
ｗＡから、被試験体の回転軸心に対する左右の重心のず
れ量を算出する。これは、二分した被試験体の左右のＭ
量をそれぞれｗＬ、ｗＩＬとし、不つりあいベクトルの
修正半径をｐとすると、回転軸心を始点とするベクトル
ｅ、、ｅＲにより次の（３１，（４１式から求めること
ができる。w, +wr+W, +WR=O-<1)wL-
e +w, ・r +wL -L+wRHR=0 Next, the unbalance vector wL at the left and right center of gravity positions,
From wA, calculate the amount of deviation between the left and right center of gravity of the test object with respect to the rotation axis. This is the left and right M of the bisected test object.
When the quantities are wL and wIL, respectively, and the correction radius of the unbalance vector is p, it can be determined from the following equations (31, (41) using vectors e, , eR starting at the rotation axis.
心位置において、回転軸心を始点として慣性主軸を終点
とするベクトルと見做すことができる。In the center position, it can be regarded as a vector starting from the axis of rotation and ending at the principal axis of inertia.
の左右両端面上における回転軸心に対する慣性主軸のず
れを示ずヘクトルｅユ、ｅｂが求められる。Hectors e and eb are determined without indicating the deviation of the principal axis of inertia with respect to the rotational axis on both the left and right end surfaces of the .
具体的には、まず例えばｅＬ、ｅｔ＜を回転軸心（２軸
）に直交するそれぞれのｘ−ｙ平面上での分力ヘクトル
ｅＬ工、ｅｃｙおよびｅえよ、ｅｐＬｙに分解する。Specifically, first, for example, eL, et< is decomposed into component forces hector eL, ecy, and e, epLy on the respective xy planes perpendicular to the rotation axis (two axes).
次に、Ｘ方向およびＸ方向のそれぞれの分力ベクトルに
ついて、第３図および第４図に示す如く、ｘ−２平面お
よびｙ−２平面上での力平衡、モーメント平衡から、左
右両端面上における回転軸心に対する慣性主軸のずれを
示すベクトルｅａ、ｅｂそれぞれのｘ、 ７分力を求
める。すなわち、被試験体の両端面間距離をｂとすると
、ｅｔｘを原点にとり、横軸にＸ、縦軸にｅχをとると
、ｅｗはｘ＝−Ｌ、ｅｂｚはｘ＝ｂ−Ｌとすれば、求め
ることができる。また、ｅＬｌを原点にとり、横軸にｙ
、縦軸に０１をとると、
からｙ＝−１，及びｙ＝ｂ−Ｌを選ぶことにより、以上
のように求められたベクトルｅＬ、ｅ、は、それぞれ被
試験体の左右両端面における回転中心と慣性主軸とのず
れの量と方向を表わすものであるから、この値に基づい
て、一本口のクランクシャフト等のセンタ孔を加工した
センタ孔加工機等のドリルの位置をシフトすれば、二本
口以降のクランクシャフト等には、機械加工後の初期不
つりあいが所定の大きさ以下となるようなセンタ孔が穿
たれることになる。Next, regarding the component force vectors in the X direction and the X direction, as shown in FIGS. 3 and 4, from the force equilibrium and moment equilibrium on the Find the x and 7 component forces of vectors ea and eb, respectively, which indicate the deviation of the principal axis of inertia with respect to the axis of rotation. That is, if the distance between both end faces of the test object is b, then etx is the origin, X is on the horizontal axis, eχ is on the vertical axis, ew is x=-L, and ebz is x=b-L. , can be found. Also, taking eLl as the origin, the horizontal axis is y
, taking 01 on the vertical axis, by selecting y=-1 and y=b-L from Since it represents the amount and direction of deviation between the center and the principal axis of inertia, based on this value, if you shift the position of the drill such as a center hole processing machine that machined the center hole of a single-port crankshaft, etc. , A center hole is bored in the crankshaft after the second hole so that the initial unbalance after machining is less than a predetermined size.
なお、以上の演算の手順については、上述の実施例に限
られることはなく、修正面上での不つりあいベクトルか
ら、両端面上における回転軸心と慣性主軸とのずれの量
および方向を導出しさえすれば、どのような演算手順を
採ってもよい。Note that the above calculation procedure is not limited to the example described above, and the amount and direction of the deviation between the rotation axis and the principal axis of inertia on both end surfaces are derived from the unbalance vector on the correction surface. Any calculation procedure may be used as long as it is done.
（ト）効果
以上説明したように、本発明によれば、汎用の動つりあ
い試験機により、機械加工後の不つりあいが所定の範囲
内に収まるような両端センタ孔の穿つ位置を容易に求め
ることができ、従来のマスセンタリングマシン等の大掛
りな専用機が不要となった。(g) Effects As explained above, according to the present invention, it is possible to easily determine, using a general-purpose dynamic balance tester, the positions for drilling center holes at both ends so that the unbalance after machining is within a predetermined range. This eliminates the need for large-scale dedicated machines such as conventional mass centering machines.
第１図は本発明実施例の構成図、第２図、第３図および
第４図は、それぞれ本発明実施例のセンタ孔位置演算回
路５において左右の修正面上の不つりあいベクトルから
、両端面上の回転軸心と慣性主軸とのずれを示すベクト
ルを算出する過程を説明する図である。
ＩＬ、ＩＲ−軸受 ２Ｌ、２Ｒ−検出器３−・−フォ
トセル ４−・動つりあい測定回路５−センタ孔位
置演算回路FIG. 1 is a block diagram of the embodiment of the present invention, and FIGS. 2, 3, and 4 show the center hole position calculation circuit 5 of the embodiment of the present invention, from the unbalance vectors on the left and right correction planes. FIG. 3 is a diagram illustrating a process of calculating a vector indicating a deviation between a rotation axis and a principal axis of inertia on a surface. IL, IR-Bearing 2L, 2R-Detector 3--Photocell 4--Movement balance measurement circuit 5-Center hole position calculation circuit
Claims (1)
の回転位相信号とから、供試体の任意の修正面上におけ
る不つりあいの量と角度を測定する装置において、得ら
れた上記不つりあいの量と角度とから、供試体の左右両
端面上における供試体の回転中心軸と慣性主軸とのずれ
の量と方向を演算する回路を有し、その演算結果により
、供試体の仕上加工後の不つりあいが所定の範囲内に収
まるような両端センタ孔加工位置を得るよう構成したこ
とを特徴とする動つりあい試験機。A device that measures the amount and angle of unbalance on any corrected surface of a specimen from an unbalance signal obtained by rotating the specimen and a rotational phase signal of the specimen. It has a circuit that calculates the amount and direction of the deviation between the center axis of rotation and the main axis of inertia of the specimen on both the left and right end faces of the specimen from the amount and angle, and the calculation result allows the A dynamic balance tester characterized in that it is configured to obtain center hole machining positions at both ends such that unbalance is within a predetermined range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20896884A JPS6186628A (en) | 1984-10-03 | 1984-10-03 | Dynamic balancing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20896884A JPS6186628A (en) | 1984-10-03 | 1984-10-03 | Dynamic balancing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6186628A true JPS6186628A (en) | 1986-05-02 |
| JPH0588413B2 JPH0588413B2 (en) | 1993-12-22 |
Family
ID=16565140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20896884A Granted JPS6186628A (en) | 1984-10-03 | 1984-10-03 | Dynamic balancing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6186628A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292632A (en) * | 2005-04-13 | 2006-10-26 | Kokusai Keisokki Kk | Crank shaft machining system |
| JP2009083005A (en) * | 2007-09-27 | 2009-04-23 | Nissan Motor Co Ltd | Method, program and device for calculating machining center for rotating element, and cutting system |
| WO2014091742A1 (en) * | 2012-12-12 | 2014-06-19 | マツダ株式会社 | Method for drilling center holes in forged rotors and system for drilling center holes in forged rotors |
| WO2014119352A1 (en) * | 2013-01-31 | 2014-08-07 | コマツＮｔｃ株式会社 | Crankshaft machining system and crankshaft machining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424755A (en) * | 1977-07-22 | 1979-02-24 | Iseki Agricult Mach | Knitting device of strawmattings |
| JPS55497A (en) * | 1978-05-27 | 1980-01-05 | Schenck Ag Carl | Method and device for centering rotary body of nonuniform axial mass distribution |
-
1984
- 1984-10-03 JP JP20896884A patent/JPS6186628A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424755A (en) * | 1977-07-22 | 1979-02-24 | Iseki Agricult Mach | Knitting device of strawmattings |
| JPS55497A (en) * | 1978-05-27 | 1980-01-05 | Schenck Ag Carl | Method and device for centering rotary body of nonuniform axial mass distribution |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292632A (en) * | 2005-04-13 | 2006-10-26 | Kokusai Keisokki Kk | Crank shaft machining system |
| JP2009083005A (en) * | 2007-09-27 | 2009-04-23 | Nissan Motor Co Ltd | Method, program and device for calculating machining center for rotating element, and cutting system |
| WO2014091742A1 (en) * | 2012-12-12 | 2014-06-19 | マツダ株式会社 | Method for drilling center holes in forged rotors and system for drilling center holes in forged rotors |
| JP2014113635A (en) * | 2012-12-12 | 2014-06-26 | Mazda Motor Corp | Method and system for machining center hole of forged rotating body |
| US9539651B2 (en) | 2012-12-12 | 2017-01-10 | Mazda Motor Corporation | Method for machining center holes of forged rotary body and system for machining center holes of forged rotary body |
| WO2014119352A1 (en) * | 2013-01-31 | 2014-08-07 | コマツＮｔｃ株式会社 | Crankshaft machining system and crankshaft machining method |
| KR20150112929A (en) * | 2013-01-31 | 2015-10-07 | 코마츠 엔티씨 가부시끼가이샤 | Crankshaft machining system and crankshaft machining method |
| JPWO2014119352A1 (en) * | 2013-01-31 | 2017-01-26 | コマツＮｔｃ株式会社 | Crankshaft machining system and crankshaft machining method |
| CN104870130B (en) * | 2013-01-31 | 2017-03-15 | 小松Ntc株式会社 | Crankshaft Machining system and method for processing crankshaft |
| US10189096B2 (en) | 2013-01-31 | 2019-01-29 | Komatsu Ntc Ltd. | Crankshaft machining system and crankshaft machining method |
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| JPH0588413B2 (en) | 1993-12-22 |
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