JPH0319737A - Centering control device for workpiece tightening device - Google Patents
Centering control device for workpiece tightening deviceInfo
- Publication number
- JPH0319737A JPH0319737A JP14880789A JP14880789A JPH0319737A JP H0319737 A JPH0319737 A JP H0319737A JP 14880789 A JP14880789 A JP 14880789A JP 14880789 A JP14880789 A JP 14880789A JP H0319737 A JPH0319737 A JP H0319737A
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- pressure
- diameter
- pressure medium
- control device
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 36
- 238000003754 machining Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Machine Tool Units (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、工作機械特に旋盤の被工作物締付Ｉｊ装置の
芯出しの制御に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to centering control of a workpiece clamping Ij device of a machine tool, particularly a lathe.
［従来の技術］
従来、旋盤でヂャックと心押し台のセンタとで挟持回転
される被工作物を切削加工する場合には、チャックとセ
ンタとの間には被工作物を圧力媒体によって保持する保
持部材を有する締付け装回が設置してある。この保持部
材には一定の圧力がか【ブられていて被工作物を保持し
、切削刃によって被工作物が切削加工される。[Prior Art] Conventionally, when cutting a workpiece that is held and rotated between a jack and the center of a tailstock on a lathe, the workpiece is held between the chuck and the center using a pressure medium. A tightening device with a retaining member is provided. A certain pressure is applied to this holding member to hold the workpiece, and the workpiece is cut by the cutting blade.
［発明が解決しようとする課題］
しかしながら、上記のような切削加工によって、即ち被
工作物の直径が順次小さくなっても一定の圧力がかけら
れている保持部材によって被工作物を保持して被工作物
を切削することは保持部材の保持範囲で芯出し誤差のた
め被工作物の芯がずれて精度の良い製品を得ることが困
勤であるという問題点ある。[Problems to be Solved by the Invention] However, by the cutting process as described above, in other words, it is not possible to hold the workpiece by a holding member to which a constant pressure is applied even as the diameter of the workpiece becomes smaller. Cutting a workpiece has a problem in that the centering error of the workpiece occurs within the holding range of the holding member, making it difficult to obtain a highly accurate product.
そこで、本発明はかかる不都合を解消しようとするもの
である。Therefore, the present invention aims to solve this problem.
［課題を解決するための千段］
上記の目的を達成づ−るため、
被工作物を挟持回転ずるチャックとセンタと、前記被工
作物を回転可能な状態で圧力媒体によって保持する保持
部材と、前記被工作物に平行に移動しながら切削加工す
る切削刃と、前記切削刃が被工作物を切削しながら前記
保持部材の位防を通過した直後に、前記圧力媒体の圧力
を予め記憶されている被工作物の直径に対応する芯ずれ
吊より計算された圧力にする制御装置とを有することを
要旨とするものである。[A thousand steps to solve the problem] In order to achieve the above object, a chuck and a center that grip and rotate a workpiece, and a holding member that holds the workpiece in a rotatable state using a pressure medium are provided. , a cutting blade that performs cutting while moving parallel to the workpiece, and a pressure of the pressure medium that is stored in advance, immediately after the cutting blade passes through the position of the holding member while cutting the workpiece. The gist of the present invention is to have a control device that applies a pressure calculated from an off-center suspension corresponding to the diameter of the workpiece being handled.
［作用］
回転している被工作物は圧力媒体の圧力で挟持力を変え
る保持部祠によって保持されて、被工作物に平行に移動
する切削刃によって加工され、加工されるにつれて被工
作物の直径は順次小さくなっていく。そのため切削刃が
被工作物を保持している保持部材の位置を通過した直後
に被工作物を保持し直す必要がある。そこで被工作物の
直径に対する被工作物の芯を保持できる保持部材の圧力
媒体の芯ずれ量より計算された圧力を予め測定しその値
を制御装置に記憶しておき、制御装置によって切削刃が
保持部拐の位置を通過した直後にその記憶されている圧
力に保持部材の圧力をＩＩＪ ｍ ｂ直す。以下順次目
的の直径になるまで上記のことを繰り返しながら加工す
ることにＪ：って粘度の良い被工作物を得ることができ
る。[Operation] The rotating workpiece is held by a holding part that changes the clamping force by the pressure of the pressure medium, and is machined by a cutting blade that moves parallel to the workpiece, and as it is machined, the workpiece is The diameter gradually decreases. Therefore, it is necessary to hold the workpiece again immediately after the cutting blade passes the position of the holding member that holds the workpiece. Therefore, the pressure calculated from the misalignment of the pressure medium of the holding member that can hold the center of the workpiece relative to the diameter of the workpiece is measured in advance, and the value is stored in the control device, and the control device controls the cutting blade. Immediately after passing the position of the holding member, the pressure of the holding member is adjusted to the stored pressure. By sequentially repeating the above steps until the desired diameter is obtained, a workpiece with good viscosity can be obtained.
［実施例］ 本発明の実施例を図面に従って説明する。[Example] Embodiments of the present invention will be described with reference to the drawings.
第１図は本実施例の旋盤の全体図を示している。FIG. 1 shows an overall view of the lathe of this embodiment.
被工作物３の端部は主軸台５０に取りけられているチャ
ック５１に挟肴ざれ、被工作物３の他端部は心押し台５
４に取りつｔノられているセンタ５３とで保持されてい
て図示しない回転装置によって回転している。また、チ
ャック５１とセンタ５３の間には後述する締付（プ装置
１ａ、１ｂ、ＩＣ、１（ｊ７）Ｍｌ台配回されていて、
それぞれの締付【プ装ｆＦｆ１ａ〜１ｄに設けられてい
る保持部材５、６、７はその端部に備えられているロー
ラ８、９、１０で回転可能な状態で被工作物３の芯出し
振れ止めのため保持している。一方被工作物３を切削加
工する切削刃６０は、被工作物３を切削加工するため被
工作物３と平行に移動する縦送り台５６、その縦送り台
５６上に載請された被工作物３を所定寸法の直径に切削
加］二ずるために移動する横送り台５７、その＆ｔ３ｙ
５り台５７上に載置されている切削刃６０を変更するた
めに設けられている回転台５８及びその回転台５８上に
載＠されている切削刃台６２と押ざえ板６１の間に挟持
固定ざれている。The end of the workpiece 3 is held between a chuck 51 attached to the headstock 50, and the other end of the workpiece 3 is held against the tailstock 5.
4, and is rotated by a rotating device (not shown). Further, between the chuck 51 and the center 53, a tightening device 1a, 1b, IC, 1(j7), which will be described later, is arranged.
The holding members 5, 6, 7 provided on each tightening device fFf1a to 1d center the workpiece 3 while being rotatable by rollers 8, 9, 10 provided at their ends. It is held to keep it steady. On the other hand, the cutting blade 60 for cutting the workpiece 3 is connected to a vertical feed table 56 that moves parallel to the workpiece 3 in order to cut the workpiece 3, and a workpiece loaded on the vertical feed table 56. A cross-feed table 57 that moves to cut the object 3 to a predetermined diameter;
A rotary table 58 provided for changing the cutting blade 60 placed on the rotary table 57 and between the cutting blade table 62 placed on the rotary table 58 and the holding plate 61. It is clamped and fixed.
次に、第２図は締付け装置１ａの断面図である。Next, FIG. 2 is a sectional view of the tightening device 1a.
なお締付け装置１ｂ〜１ｄは締付け装置１ａと同じであ
る。第２図において１ａと記号付けられて示され、特に
回転ずる被工作物３を旋盤上で締伺および（あるいは）
保持するための締付装置は、締付台２を備えたケーシン
グ４より構成され、このケーシング内に、被工作物３に
作用し互いに相関的に結合された保持部材５、６および
７ならびにこれらの保持部材と連結状態におかれる作動
部材が設けられている。保持部材５はこの場合軸線方向
に移動可能に構威されており、調整部材１３を備えてい
る。一方保持部材６および７はボルト１１および１２に
回転可能に軸支された角レバー５
として構或ざれている。保持部林６および７の被■作物
３に作用する端部には、被工作物の回転運動時の摩擦を
減少するために、ローラ８、９および１０が設りられて
いる。保持部材５、６および７を互いに相関的に結合す
るために、プリズム状に形成された調整部材１３が役立
ち、この調整部材はその外面３１ないし３２で保持部材
６および７に作用する。この場合に６摩擦を少なくする
ために、調整部材１３と協働する保持部材６および７の
端部に、回転可能に支持されたローラ２９および３０が
設けられている。Note that the tightening devices 1b to 1d are the same as the tightening device 1a. In particular, a rotating workpiece 3, designated 1a in FIG. 2, is clamped and/or
The clamping device for holding consists of a casing 4 with a clamping base 2, in which holding members 5, 6 and 7 acting on the workpiece 3 and connected relative to each other, as well as these An actuating member is provided which is coupled to the retaining member. The holding element 5 is in this case arranged to be axially movable and is provided with an adjustment element 13 . On the other hand, the holding members 6 and 7 are configured as square levers 5 rotatably supported by bolts 11 and 12. At the ends of the holding sections 6 and 7 which act on the workpiece 3, rollers 8, 9 and 10 are provided in order to reduce friction during the rotational movement of the workpiece. To connect the holding parts 5, 6 and 7 relative to one another, a prismatically designed adjustment element 13 serves, which acts on the holding parts 6 and 7 with its outer surfaces 31 and 32. In order to reduce friction in this case, rotatably supported rollers 29 and 30 are provided at the ends of the holding elements 6 and 7, which cooperate with the adjustment element 13.
図示の締付装置に対する実現可能な作動部材の一例とし
て、第２図の実施例においては、圧力媒体が導管２１又
は２２を介して交互に導かれるシリンダ１９の中に挿入
され、かつ両側より圧力媒体によって駆動され得るピス
トン２０が設けられている。しかしてピストン２０は、
ピストン棒１８を介して保持部材５、６および７に作用
する。As an example of a possible actuating member for the illustrated tightening device, in the embodiment according to FIG. A piston 20 is provided which can be driven by a medium. However, the piston 20 is
It acts on the holding members 5, 6 and 7 via the piston rod 18.
第２図に示された締付装ｆｉｉ１ａ〜１ｄによって、被
工作物、たとえば３と記号イ４けられた軸を旋盤６
上で締｛＝ｌけるとづると、一点鎖線で示された締付台
２に固定された締付装ｔａｌａ〜１ｄは、旋盤上の適当
な場所に設けられている。ついで保持部拐５、６および
７が加工さるべき被工作物を保持する。被工作物が保持
部林５、６および７の間に挿入された後、導管２１を通
して圧力ピストン２０に圧力媒体が導かれ、ピス］・ン
２０はビス１〜ン棒１８を介して保持部材５と連結され
ており、保持部材５は軸線上を被工作物の方向に移動せ
しめられる。Using the tightening devices fii1a to fii1d shown in FIG. Tightening devices tala to 1d fixed to the mounting base 2 are provided at appropriate locations on the lathe. Holding members 5, 6 and 7 then hold the workpiece to be machined. After the workpiece has been inserted between the holding parts 5, 6 and 7, the pressure medium is led through the conduit 21 to the pressure piston 20, which is then connected to the holding part via the screws 1 to 18. 5, and the holding member 5 is moved along the axis in the direction of the workpiece.
保持部材５の移動の際に、ボルト１１および１２上で回
転可能に支承され角形に形或された保持部祠６および７
のローラ２９および３０は、調整部祠１３の外而３１お
よび３２上で展動し、その結果保持部材６および７は外
方に押しやられ、従ってそのローラ９および１０は被工
作物に向って押しつ（ノられる。かくして被工作物３は
加えられた圧ノコに相応して固定保持されかつ三方支持
される。When the holding member 5 is moved, the holding portions 6 and 7, which are rotatably supported on the bolts 11 and 12 and have a rectangular shape,
The rollers 29 and 30 of are rolled out on the outer shells 31 and 32 of the adjusting shaft 13, so that the retaining members 6 and 7 are forced outwards and the rollers 9 and 10 are therefore moved towards the workpiece. The workpiece 3 is thus held fixed and supported on three sides in accordance with the applied pressure saw.
次に第３図は締｛ｌｉプ装置１ａ〜１ｄの保持部材５、
６、７の締付け力を調整制御する油圧回路図である。２
連式オイルボンプ８０はオイルタンク８１からオイルを
吸い上げてポンプの吐出口８２、８３から送液され、吐
出口８２を出たオイルは逆止弁６４、保持部拐５、６、
７の挟持力を制御する圧力制御弁８５、保持部材５、６
、７によって被工作物３を保持あるいは解放する流量切
替弁８６、２連式逆止弁８７、及び締付け装置１ａのピ
ストン２０のスピードを制御する２連式逆止弁付き可変
流量調整弁８８を通って締付け装置１ａの圧力媒体口２
１へ導びかれる。一方、締付【プ装置１ａの圧力媒体口
２２から出る圧力媒体は逆止弁付き可変流量調整弁８８
のもう一方に入り、逆止弁８７及び流量切替弁８６を通
りフィルター９３を介してオイルタンク９０へ導かれる
。また、圧力制御弁８５で制御されたオイルは冷却機９
１で冷却されてオイルタンク８１へ戻される。また他の
締付け装ａ１ｂ、１ｃ，１ｄも上記と同様に構威されて
いるが締角【プ装置１ａ，１ｃと締付け装＠１ｂ、１ｄ
の圧力媒体口２１へはそれぞれ異なつているオイルポン
プ８０の吐出口８２と８３に接続ざれていて、締付け装
置１ａとその隣に配置される締付け装置１ｂ，締付け装
置１ｂと締何け装置１ｃ，締句け装置ＩＣと締付け装置
１ｄとが相互に影響しあわないようになっている。Next, FIG. 3 shows the holding members 5 of the clamping devices 1a to 1d,
6 is a hydraulic circuit diagram for adjusting and controlling the tightening forces of No. 6 and 7. FIG. 2
The linked oil pump 80 sucks up oil from the oil tank 81 and sends it from the discharge ports 82 and 83 of the pump.
Pressure control valve 85 for controlling the clamping force of 7, holding members 5 and 6
, 7 to hold or release the workpiece 3, a double check valve 87, and a variable flow rate adjustment valve 88 with double check valve to control the speed of the piston 20 of the tightening device 1a. through the pressure medium port 2 of the tightening device 1a
It will lead you to 1. On the other hand, the pressure medium coming out of the pressure medium port 22 of the tightening device 1a is controlled by a variable flow rate regulating valve 88 with a check valve.
The oil enters the other side, passes through a check valve 87 and a flow rate switching valve 86, and is guided to an oil tank 90 via a filter 93. Also, the oil controlled by the pressure control valve 85 is supplied to the cooler 9
1 and returned to the oil tank 81. In addition, other tightening devices a1b, 1c, and 1d are constructed in the same manner as above, but the tightening devices 1a, 1c and tightening devices @1b, 1d
The pressure medium ports 21 of are connected to the discharge ports 82 and 83 of different oil pumps 80, respectively, and there are a tightening device 1a and a tightening device 1b arranged next to it, a tightening device 1b and a tightening device 1c, The tightening device IC and the tightening device 1d are designed not to influence each other.
次に上記の構成に基く作用について説明する。Next, the operation based on the above configuration will be explained.
被工作物３はチャック５１とセンタ５３とで保持されて
いるとともに、締付け装詔１ａ〜１ｄによっても同様に
芯出し振れ止めのために保持されて回転しながら、切削
刃６ｏで被工作物３は予め決められている径に加工され
る。即ち被工作物３は回転されながら１回で切削される
量に従って横送り台５７を移動させ、そして縦送り台５
６を被工作物３に平行に移動しながら切削する。以後こ
の工程を繰り返し行ない被工作物３を目的の直径に加工
する。この工程において、締付け装置１８〜１ｄは被工
作物３の直径に従って保持されるが従来技術にＪ：れば
締付番ノ装置１ａ〜１ｄの圧力媒体の圧力は一定である
ため振れ止めの芯は把握する被工作物３の直径の変化に
より被工作物３の回転９
中心がずれ、精度の良い加工が困難である。そこで本実
施例では被工作物３の直径に対して芯に保持できる圧力
媒体の圧力を予め求めておき、その値を制御装置に記憶
しておき、縦送り台５６が移動しながら切削していくと
き切削刃がそれぞれの締付け装置の保持部材５、６、７
の位置を通過した直後に、記憶されている被工作物３の
直径に対する締付け装置１８〜１ｄの圧力媒体の圧力を
締付け装置１８〜１ｄに対するそれぞれの圧力制御弁８
５によって制御する制御装置が設けられている。The workpiece 3 is held by the chuck 51 and the center 53, and is also held by the clamping devices 1a to 1d for centering steady rest, and while rotating, the workpiece 3 is held by the cutting blade 6o. is machined to a predetermined diameter. That is, while the workpiece 3 is rotated, the horizontal feed table 57 is moved according to the amount to be cut at one time, and the vertical feed table 5 is moved.
6 is cut while moving parallel to the workpiece 3. Thereafter, this process is repeated to machine the workpiece 3 to the desired diameter. In this process, the tightening devices 18 to 1d are held according to the diameter of the workpiece 3, but if the prior art is J: the pressure of the pressure medium of the tightening devices 1a to 1d is constant, so the center of the steady rest is The center of rotation of the workpiece 3 shifts due to changes in the diameter of the workpiece 3 to be grasped, making it difficult to perform accurate machining. Therefore, in this embodiment, the pressure of the pressure medium that can be held in the core with respect to the diameter of the workpiece 3 is determined in advance, the value is stored in the control device, and the vertical feed table 56 is moved while cutting. When the cutting blade moves, the holding members 5, 6, 7 of the respective tightening devices
Immediately after passing through the position, the pressure of the pressure medium of the clamping devices 18 to 1d for the memorized diameter of the workpiece 3 is changed to the respective pressure control valve 8 for the clamping devices 18 to 1d.
A control device is provided for control by 5.
次に貝休的に説明すると、設置する締付け装置１８〜１
ｄは製作誤差や設置誤差があるため被工作物の芯を保持
するための圧力媒体の圧力はそれぞれ異なっているため
締付け装置１ａ〜１ｄを旋盤に設圓した状態で測定する
。その結果を［表］に記載する。［表］には被工作物３
の直径に対する締付け装置１８〜１ｄが被工作物３の芯
を保持するときの圧力媒体の圧力（媒体圧〉を示すもの
であり、そのデータは制御装置に記憶されている。Next, to explain in detail, the tightening devices 18 to 1 to be installed
d is measured with the tightening devices 1a to 1d installed on the lathe because the pressure of the pressure medium for holding the core of the workpiece is different due to manufacturing errors and installation errors. The results are listed in the [Table]. [Table] shows workpiece 3
It shows the pressure of the pressure medium (medium pressure) when the tightening devices 18 to 1d hold the core of the workpiece 3 with respect to the diameter of , and the data is stored in the control device.
１０
そこで例えば被工作物３の直径が約１１０ｍのものを１
０３ｍに加工する場合、まず１回で切削する量を１Ｍと
したとき、この値に基づいて制１１］装置によって横送
り台５７を被工作物３の方に移動させ、次に縦送り台５
６を被工作物に平行に移動させながら切削していく。そ
して切削刃６０が締付（プ装置１ａの保持部利５、６、
７を通過すると保持部材５、６、７の位商の被工作物３
の直径はそれぞれ２＃小さくなる。そこで予め制御装置
に記憶されているデータ、即ち［表］から、切削後の被
工作物の直径の値（１ １０−２＝１０８ｍ＞を基に［
表］に記憶されている被工作物の直径（無い場合は前後
の値）を探索して該当する直径に対する圧ノ〕媒体の圧
力値を読む。この例では、直径の値が１０８ｍｍである
から直径が１１０ＩｌＩＩ１のとぎの媒体圧１ ２ ．
６Ｋｇ／ｃｉ及び直径１００ｍのときの媒体圧１３．
３Ｋｇ／ｃｊを読みとり切削された後の径１０８ｙａに
対する圧力媒体の圧力を内挿補完によって求める。即ち
圧力媒体の圧力を（１２．６−１３．３）／（１１０−
１００）Ｘ（１１１
１０−１０８）＋１３。３Ｋｙ／ａｄの演算によって求
め、制御装直によって演算した値に締付け装置１ａの圧
力制御弁８５を制御する。次に切削刃６０が締付Ｃプ装
置１ａに隣接する締付（プ装置１ｂの保持部材５、６、
７を通過したときも同様に表から被工作物の直径１１０
ｍと１００馴に対する媒体圧１２．８Ｎｇ／ｃｉと１３
．７Ｋｇ／ｃｍを読みとり内挿補完によって（１２．
８−１３．７）／（１１ ０−１ ００） ｘ （１
１ ０−１ ０８） ＋１ ３． ７Ｋ’ｊ ／ ｃａ
ｒの演算で圧力媒体の圧力を求め、制御装圃によって求
めた圧力値に締付け装＠１ｂの圧力制御弁８５を制御す
る。また締付け装＠ＩＣ及び締付け装ｆＷ１ｄについて
も同様な操作を行なう。以下、目的の径である１０３ｍ
＋まで順次上記の工程を繰り返し行なう。このように順
次切削刃６０の移動につれて被工作物の径は小さくなっ
ていくが被工作物３の径に対応して締付け装ｆｉ１ａ〜
１ｄによって被工作物３は芯で保持されて目的の直径ま
で切削加工されるため精度の良い被工作物を得ることが
できる。10 For example, if the workpiece 3 has a diameter of about 110 m,
When machining 0.3m, first, assuming that the amount to be cut in one time is 1M, control is performed based on this value11) by moving the horizontal feed table 57 toward the workpiece 3, and then by moving the horizontal feed table 57 toward the workpiece 3.
6 is moved parallel to the workpiece while cutting. Then, the cutting blade 60 is tightened (the holding parts 5, 6 of the cutting device 1a,
7, the workpiece 3 at the position of the holding members 5, 6, and 7
The diameter of each becomes smaller by 2#. Therefore, from the data stored in the control device in advance, that is, the [table], based on the value of the diameter of the workpiece after cutting (1 10-2 = 108 m>), [
Search for the diameter of the workpiece stored in the table (if not, the previous and subsequent values) and read the pressure value of the pressure medium for the corresponding diameter. In this example, since the value of the diameter is 108 mm, the medium pressure of the cutting medium with a diameter of 110IlII1 is 1 2 .
Medium pressure at 6Kg/ci and diameter 100m13.
3Kg/cj is read and the pressure of the pressure medium for the diameter 108ya after cutting is determined by interpolation. That is, the pressure of the pressure medium is (12.6-13.3)/(110-
100) Next, the cutting blade 60 is connected to the clamping device 1a (holding members 5, 6 of the clamping device 1b,
7, the diameter of the workpiece is 110 from the table.
m and medium pressure 12.8Ng/ci for 100cm and 13
．． Read 7Kg/cm and perform interpolation (12.
8-13.7)/(11 0-1 00) x (1
1 0-1 08) +1 3. 7K'j/ca
The pressure of the pressure medium is determined by calculating r, and the pressure control valve 85 of the tightening device @1b is controlled to the pressure value determined by the control device. Further, the same operation is performed for the tightening device @IC and the tightening device fW1d. Below is the target diameter of 103m
Repeat the above steps sequentially until +. In this way, as the cutting blade 60 sequentially moves, the diameter of the workpiece becomes smaller, but the tightening devices fi1a~corresponding to the diameter of the workpiece 3.
Since the workpiece 3 is held by the core and cut to the desired diameter by 1d, a highly accurate workpiece can be obtained.
１２
［表］
１ ３
なお［表］は被工作物の直径を１０＃間隔で作成してあ
るが更に細かい間隔で作或しその値でもって締付（プ装
置の圧力媒体の圧力を制御してもよい。また被工作物を
場所によって異なる直径に加工するときであっても被工
作物の直径に対する圧力媒体の圧力でもって保持部材の
圧力を制御することによっても同様の効果を得ることが
できる。12 [Table] 1 3 The [Table] shows the diameter of the workpiece being created at intervals of 10mm, but it is also possible to create workpieces at even smaller intervals or use those values to control the pressure of the pressure medium in the tightening device. A similar effect can also be obtained by controlling the pressure of the holding member using the pressure of the pressure medium relative to the diameter of the workpiece, even when processing the workpiece to have different diameters depending on the location. can.
［発明の効果］
この発明は上記で詳述した如く、切削刃で順次目的の直
径まで被工作物を切削していくにつれて被工作物の直径
は順次減少していく過程において、保持部材の把握径の
変化による芯出し誤差を保持部材の圧力制御装置によっ
て予め記憶されている被工作物の直径に対応した圧力媒
体の圧力にされる。即ち被工作物は保持部材の制御装直
によって芯で保持されて切削加］ニされるため精度のよ
い加工ができる。[Effects of the Invention] As detailed above, the present invention is capable of grasping the holding member in the process in which the diameter of the workpiece decreases as the cutting blade sequentially cuts the workpiece to the target diameter. The centering error due to the change in diameter is adjusted to the pressure of the pressure medium corresponding to the diameter of the workpiece stored in advance by the pressure control device of the holding member. In other words, the workpiece is held at the center by the control of the holding member and is machined, so that highly accurate machining is possible.
図面は本発明の一実施例を示１もので第１図は旋盤の全
体図、第２図は締付（づ装置の断面図、第１４
３図は締イ４け装置の保持部材の締イ４り力を調整制御
する油圧回路図である。
１８〜１ｄ・・・締付け装置
３・・・被工作物
５、６、７・・・保持部材
５１・・・チャック
５３・・・センタ
５４・・・心押し台
６０・・・切削刃The drawings show one embodiment of the present invention. Fig. 1 is an overall view of the lathe, Fig. 2 is a sectional view of the tightening device, and Fig. 14-3 is a diagram showing the tightening of the holding member of the four-key tightening device. 18-1d... Tightening device 3... Workpieces 5, 6, 7... Holding member 51... Chuck 53... Center 54. ...Tailstock 60...Cutting blade
Claims (1)
作物を回転可能な状態で圧力媒体によつて保持する保持
部材と、 前記被工作物に平行に移動しながら切削加工する切削刃
と、 前記切削刃が被工作物を切削しながら前記保持部材の位
置を通過した直後に、前記圧力媒体の圧力を予め記憶さ
れている被工作物の直径に対応する圧力にする制御装置
と、 を有することを特徴とする被工作物締付け装置の芯出し
制御装置。[Scope of Claims] A chuck and a center that grip and rotate a workpiece, a holding member that holds the workpiece in a rotatable state by a pressure medium, and a cutting member that cuts the workpiece while moving parallel to the workpiece. a cutting blade to be processed; and immediately after the cutting blade passes the position of the holding member while cutting the workpiece, the pressure of the pressure medium is set to a pressure corresponding to a previously stored diameter of the workpiece; A centering control device for a workpiece tightening device, comprising: a control device;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14880789A JPH0741493B2 (en) | 1989-06-12 | 1989-06-12 | Centering control device for workpiece clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14880789A JPH0741493B2 (en) | 1989-06-12 | 1989-06-12 | Centering control device for workpiece clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0319737A true JPH0319737A (en) | 1991-01-28 |
| JPH0741493B2 JPH0741493B2 (en) | 1995-05-10 |
Family
ID=15461151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14880789A Expired - Fee Related JPH0741493B2 (en) | 1989-06-12 | 1989-06-12 | Centering control device for workpiece clamping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741493B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222421A (en) * | 1992-01-24 | 1993-06-29 | Dainichi Kinzoku Kogyo Kabushiki Kaisha | Centering device |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| JP2017064819A (en) * | 2015-09-29 | 2017-04-06 | 三菱日立パワーシステムズ株式会社 | Lathe, whirl stopping device and cutting processing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382343B (en) * | 2018-12-11 | 2022-01-07 | 重庆世潮机械有限公司 | Thread rolling wheel fixing device in thread rolling wheel cleaning machine |
-
1989
- 1989-06-12 JP JP14880789A patent/JPH0741493B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222421A (en) * | 1992-01-24 | 1993-06-29 | Dainichi Kinzoku Kogyo Kabushiki Kaisha | Centering device |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| JPH07102503B2 (en) * | 1992-08-26 | 1995-11-08 | 株式会社エスエムダブリュージャパン | Automatic centering steady rest device for long workpiece cylindrical grinding and grinding method using the device |
| JP2017064819A (en) * | 2015-09-29 | 2017-04-06 | 三菱日立パワーシステムズ株式会社 | Lathe, whirl stopping device and cutting processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741493B2 (en) | 1995-05-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |