JP2010115703A - Closed forging apparatus - Google Patents

Closed forging apparatus Download PDF

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JP2010115703A
JP2010115703A JP2008315046A JP2008315046A JP2010115703A JP 2010115703 A JP2010115703 A JP 2010115703A JP 2008315046 A JP2008315046 A JP 2008315046A JP 2008315046 A JP2008315046 A JP 2008315046A JP 2010115703 A JP2010115703 A JP 2010115703A
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die
punch
piston
movable
liquid
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Shuichi Matsunaga
修一 松永
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a closed forging apparatus for solving such the faults that an external pressure generating device, piping from the external pressure generating device to the slide and bolster of a press and a device for regulating the position of the die are indispensable in the conventional technology and accordingly, the closed forging apparatus is obliged to be expensive. <P>SOLUTION: In a pair of opposed die set plates (20) and (40) which are attached to the press and used, the die set plate (20) is provided with a movable die (21), a fixed punch (23), a die-side piston (24), liquid (27) and a piston (29) for advance, and the die set plate (40) is provided with a fixed die (41), a movable punch (43), a punch-side piston (44), a liquid (47) and a piston (49) for retreat. Force of bringing the movable die (21) into contact with the fixed die (41) when press-forming is converted into force of squeeze-forming with the fixed punch (23) and the movable punch (43) via the liquid (27) and the liquid (47), and also the position of the movable punch (43) is controlled. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明はプレス機械に取り付けて使用する閉塞鍛造装置に関するものである。  The present invention relates to a closed forging device used by being attached to a press machine.

図１及び図２に示すような形状の等速ジョイントのスパイダ等で代表される鍛造完成品（２）を、図３に示す鍛造用素材（１）から閉塞鍛造で成形する場合の従来の方法について図４を用いて説明する。図４の左半分は成形直前の状態を、また、右半分は成形完了時の状態をそれぞれ示しており、プレス機械のスライドが下降を始めると型彫り面を互いに対向せしめられた上下一対のダイ（３）及び（４）が外部の液圧発生装置等の圧力で上下方向に当接した状態を保持したまま、上下ダイ（３），（４）の貫通穴の当接型彫り面近傍で素材（１）をプレス機械のスライド側の固定パンチ（５）とボルスタ側の固定パンチ（６）とで潰し成形が進行し、同時に上下ダイ（３），（４）の当接面をプレス機械のスライドの下降速度の１／２の速度で下降せしめ、当接した上下ダイ（３），（４）に対してはあたかもプレス機械のスライド側の固定パンチ（５）とボルスタ側の固定パンチ（６）とがそれぞれスライドの下降速度の１／２の速度で素材に向かって進入しているかのような状態で塑性変形を完了させる。ゆえに従来の技術では図５に示すように上下ダイスを圧力で当接させるためのアキュムレータ等の外部圧力発生装置（７）と、外部圧力発生装置からプレス機械のスライド及びボルスタまでの配管（８）と、上下ダイスの当接面をプレス機械のスライドの下降速度の１／２の速度で下降せしめるためのダイ位置規制装置（９）が必要となる。  A conventional method for forming a finished forged product (2) represented by a spider of a constant velocity joint having a shape as shown in FIGS. 1 and 2 from a forging material (1) shown in FIG. 3 by closed forging. Will be described with reference to FIG. The left half of FIG. 4 shows the state immediately before molding, and the right half shows the state when molding is completed. When the slide of the press machine begins to descend, a pair of upper and lower dies whose mold surfaces are opposed to each other (3) and (4) in the vicinity of the contact die-cut surface of the through-holes of the upper and lower dies (3) and (4) while maintaining the state in which they are in contact with each other in the vertical direction by the pressure of an external hydraulic pressure generator or the like. The material (1) is crushed by the fixed punch (5) on the slide side of the press machine and the fixed punch (6) on the bolster side, and the contact surfaces of the upper and lower dies (3) and (4) are simultaneously pressed by the press machine. For the upper and lower dies (3) and (4) that are in contact with each other, the fixed punch (5) on the slide side of the press machine and the fixed punch on the bolster side ( 6) and ½ of the slide descending speed. To complete the plastic deformation in a state as if they were entered towards. Therefore, in the prior art, as shown in FIG. 5, an external pressure generator (7) such as an accumulator for bringing the upper and lower dies into contact with pressure, and a pipe (8) from the external pressure generator to the slide and bolster of the press machine Then, a die position restricting device (9) for lowering the contact surface of the upper and lower dies at a speed that is ½ of the slide lowering speed of the press machine is required.

前述の従来技術では外部圧力発生装置と、外部圧力発生装置からプレス機械のスライド及びボルスタまでの配管と、ダイ位置規制装置が不可欠で、閉塞鍛造装置が高価にならざるを得なかった。本発明は、これらの欠点を解決するためになされたものである。
特許１６２０８７３号 特許１６７６３６８号 In the above-described prior art, the external pressure generating device, the piping from the external pressure generating device to the slide and bolster of the press machine, and the die position regulating device are indispensable, and the closed forging device has to be expensive. The present invention has been made to solve these drawbacks.
Japanese Patent No. 1620873 Japanese Patent No. 1676368

解決しようとする課題は、プレス機械に使用する閉塞鍛造装置において、アキュムレータ等の外部圧力発生装置と、外部圧力発生装置からプレス機械のスライド及びボルスタまでの配管と、ダイ位置規制装置を不要とし、安価でエネルギ消費の少ない閉塞鍛造装置を提供することである。The problem to be solved is that, in the closed forging device used in the press machine, an external pressure generator such as an accumulator, a pipe from the external pressure generator to the slide and bolster of the press machine, and a die position regulating device are unnecessary. The object is to provide a closed forging device that is inexpensive and consumes less energy.

プレス機械に取付けて使用する対向する一対のダイセットプレート（２０）及び（４０）において、ダイセットプレート（２０）には表側に成形面を型彫りされた上下方向に摺動可能な可動ダイ（２１）と、可動ダイ（２１）を上下方向に摺動可能に位置決め保持したダイホルダ（２２）と、可動ダイ（２１）の貫通穴部に間接的に設置され表側に成形面を型彫りされた固定パンチ（２３）と、可動ダイ（２１）の裏側のダイ側ピストン（２４）と、ダイ側ピストン（２４）を収納するダイ側シリンダ（２５）と、ダイ側ピストン（２４）を作動前の定位置に附勢する弾発機構（２６）と、ダイ側シリンダ（２５）内に満たされた液体（２７）と、ダイ側シリンダ（２５）と液体（２７）が流通可能な通路で繋がっている前進用シリンダ（２８）と、前進用シリンダ（２８）に収納された前進用ピストン（２９）と、前進用ピストン（２９）を作動前の定位置に附勢する弾発機構（３０）と、液体（２７）で隙間なく満たされた液体室（３１）を設け、ダイセットプレート（４０）には可動ダイ（２１）と対向し表側に成形面を型彫りされた固定ダイ（４１）と、固定ダイ（４１）を位置決め保持したダイホルダ（４２）と、固定ダイ（４１）の貫通穴部に間接的に設置され上下方向に摺動可能で表側に成形面を型彫りされた可動パンチ（４３）と、可動パンチ（４３）の裏側のパンチ側ピストン（４４）と、パンチ側ピストン（４４）を収納するパンチ側シリンダ（４５）と、パンチ側ピストン（４４）を作動前の定位置に附勢する弾発機構（４６）と、パンチ側シリンダ（４５）内に満たされた液体（４７）と、パンチ側シリンダ（４５）と液体（４７）が流通可能な通路で繋がっている後退用シリンダ（４８）と、前進用ピストン（２９）に対向し後退用シリンダ（４８）に収納された後退用ピストン（４９）と、後退用ピストン（４９）を作動前の定位置に附勢する弾発機構（５０）と、液体（４７）で隙間なく満たされた液体室（５１）を設ける。本発明は、以上の構成からなる閉塞鍛造装置である。  In a pair of opposing die set plates (20) and (40) used by being attached to a press machine, the die set plate (20) has a movable die (with a molding surface engraved on the front side and slidable in the vertical direction) 21), a die holder (22) in which the movable die (21) is positioned and held so as to be slidable in the vertical direction, and the molding surface is die-cut on the front side, which is indirectly installed in the through-hole portion of the movable die (21). The fixed punch (23), the die side piston (24) on the back side of the movable die (21), the die side cylinder (25) for housing the die side piston (24), and the die side piston (24) before the operation The elastic mechanism (26) energizing the fixed position, the liquid (27) filled in the die side cylinder (25), and the passage through which the die side cylinder (25) and the liquid (27) can flow are connected. Forward cylinder (2 ), A forward piston (29) housed in the forward cylinder (28), a resilient mechanism (30) for biasing the forward piston (29) to a fixed position before operation, and a liquid (27). A liquid chamber (31) filled with no gap is provided, and a fixed die (41) having a molding surface engraved on the front side facing the movable die (21) on the die set plate (40), and a fixed die (41) A die holder (42) that is positioned and held, a movable punch (43) that is indirectly placed in the through hole portion of the fixed die (41), is slidable in the vertical direction, and has a molding surface engraved on the front side, and a movable punch A punch side piston (44) on the back side of (43), a punch side cylinder (45) that houses the punch side piston (44), and a resilient mechanism that urges the punch side piston (44) to a fixed position before operation. (46) and punch side cylinder (45 The liquid (47) filled therein, the retreat cylinder (48) connected by a passage through which the punch side cylinder (45) and the liquid (47) can flow, and the retreat cylinder facing the advance piston (29) The retraction piston (49) housed in the cylinder (48), the repelling mechanism (50) for urging the retraction piston (49) to a fixed position before operation, and the liquid (47) filled with no gap. A liquid chamber (51) is provided. The present invention is a closed forging device configured as described above.

以下、本発明の実施の形態について説明する。図７において、左半分が成形直前の状態を、右半分が成形完了時の状態をそれぞれ示しており、プレス機械のスライドが下降すると、可動ダイ（２１）と固定ダイ（４１）とが当接した後、可動ダイ（２１）の上下方向の位置が固定ダイ（４１）によって強制的に当接状態を保持させられ、もってダイ側ピストン（２４）が押し込まれる。液体室（３１）には液体（２７）が隙間なく満たされているために逃げ場がなくダイ側シリンダ（２５）内の液体（２７）の減少分が前進用シリンダ（２８）内に流れ込み、前進用ピストン（２９）を前進させ、その結果対向する後退用ピストン（４９）を後退させる。液体室（５１）には液体（４７）が隙間なく満たされているために逃げ場がなく、後退用シリンダ（４８）内の液体（４７）の減少分がパンチ側シリンダ（４５）内に流れ込み、パンチ側ピストン（４４）を突き出させ、それにより可動パンチ（４３）が鍛造用素材（１）に向かって進入し、固定パンチ（２３）との間で鍛造用素材（１）を潰し成形させ、対向する可動ダイ（２１）と固定ダイ（４１）の当接する型彫り形状に塑性変形させた鍛造完成品（２）を得る。Embodiments of the present invention will be described below. In FIG. 7, the left half shows the state immediately before molding, and the right half shows the state when molding is completed. When the slide of the press machine is lowered, the movable die (21) and the fixed die (41) come into contact with each other. After that, the position of the movable die (21) in the vertical direction is forcibly held in contact by the fixed die (41), and the die side piston (24) is pushed in. The liquid chamber (31) is filled with the liquid (27) without any gap, so there is no escape space, and the reduced amount of the liquid (27) in the die side cylinder (25) flows into the forward cylinder (28) and moves forward. The piston (29) is moved forward, and as a result, the opposing piston (49) is moved backward. Since the liquid chamber (51) is filled with the liquid (47) without any gap, there is no escape, and the reduced amount of the liquid (47) in the retreating cylinder (48) flows into the punch side cylinder (45), The punch side piston (44) is protruded, whereby the movable punch (43) enters toward the forging material (1), and the forging material (1) is crushed and formed with the fixed punch (23), A forged finished product (2) is obtained which is plastically deformed into a die-cut shape in which the opposed movable die (21) and fixed die (41) abut.

このように、可動ダイ（２１）と固定ダイ（４１）の当接した力が可動パンチ（４３）を押し上げる力に変換されているので、外部圧力発生装置と、外部圧力発生装置からプレス機械のスライド及びボルスタまでの配管が不要である。  In this way, since the abutting force of the movable die (21) and the fixed die (41) is converted into a force for pushing up the movable punch (43), the external pressure generator and the external pressure generator to the press machine Piping to the slide and bolster is unnecessary.

また、成形直前から成形完了時までの可動ダイ（２１）の上下方向の位置が固定ダイ（４１）によって強制的に当接状態を保持させられ、可動パンチ（４３）の移動速度はスライドの下降速度に比例するので、ダイ位置規制装置が不要となる。  Further, the vertical position of the movable die (21) from immediately before molding to the time when molding is completed is forcibly held in contact by the fixed die (41), and the moving speed of the movable punch (43) is lowered by the slide. Since it is proportional to the speed, a die position restricting device becomes unnecessary.

可動ダイ（２１）と固定ダイ（４１）が当接した面に対する、プレス機械のスライドの下降速度Ｘと可動パンチ（４３）の移動速度Ｙの比率は、ダイ側ピストン（２４）の面積と、前進ピストン（２９）の面積と、パンチ側ピストン（４４）の面積と、後退ピストン（４９）の面積の組み合わせで決定できるので、それぞれの面積を適当に設定することにより、Ｘ＜Ｙ，Ｘ＝Ｙ，Ｘ＞Ｙの選択は容易にできる。  The ratio of the slide lowering speed X of the press machine to the moving speed Y of the movable punch (43) with respect to the surface where the movable die (21) and the fixed die (41) are in contact with the area of the die side piston (24), Since it can be determined by a combination of the area of the forward piston (29), the area of the punch side piston (44), and the area of the backward piston (49), X <Y, X = Selection of Y, X> Y can be easily performed.

図８の例では以下の表１の条件でＸ＝Ｙの関係を満たした。

Figure 2010115703
In the example of FIG. 8, the relationship of X = Y is satisfied under the conditions shown in Table 1 below.
Figure 2010115703

またパンチが成形に要する力と閉塞力、言い換えるパンチ側ピストン（４４）に加わる力とダイ側ピストン（２４）に加わる力の関係は表２に示す。

Figure 2010115703
この場合、パンチが成形に要する力に比べ閉塞力の方が小さくなっているが、図６に示すように、パンチが成形時に鍛造完成品（２）に及ぼす加工域の面積（１０）に比べ、ダイが成形時に鍛造完成品（２）に及ぼす加工域の面積（１１）は小さく約５５〜６５％なのでパンチ側ピストン（４４）の面積Ａとダイ側ピストン（２４）の面積（Ａ−Ｂ）の比率Ａ：（Ａ−Ｂ）≒１：０．８程度なら問題ない。仮に閉塞力が不足の場合は、ダイセットプレート（２０）に設けられたダイ側シリンダ（２５）内に、上下方向に摺動可能でダイセットプレート（２０）を貫通する与圧ピン（３９）を介して外部のクッション等の圧力で補えばよい。Table 2 shows the relationship between the force required to form the punch and the closing force, in other words, the force applied to the punch side piston (44) and the force applied to the die side piston (24).
Figure 2010115703
 In this case, the closing force is smaller than the force required for forming the punch. However, as shown in FIG. 6, compared to the area (10) of the processing area that the punch exerts on the forged finished product (2) at the time of forming. The area (11) of the processing area exerted on the forged finished product (2) when the die is molded is small, about 55 to 65%, so the area A of the punch side piston (44) and the area of the die side piston (24) (AB) ) Ratio A: (A−B) ≈1: 0.8, there is no problem. If the closing force is insufficient, a pressurizing pin (39) slidable in the vertical direction and penetrating the die set plate (20) in the die side cylinder (25) provided on the die set plate (20). It may be compensated by the pressure of an external cushion or the like via

また、ダイセットプレート（４０）の中の液体（４７）の温度上昇による膨張等を緩和するために、タンク（６０）と、タンク（６０）と液体室（５１）を繋ぐ回路の途中のチェック弁（６１）と、液体室（５１）とタンク（６０）を繋ぐ回路の途中のチェック弁（６２）と、シリンダ（６３）と、ピストン（６４）と、弾性材（６５）と、圧力制御弁（６６）と、冷却器（６７）を設け、プレス機械のスライドが下降するたびに、液体室（５１）内の液体（４７）を一定量入れ替える対策も好ましい。ダイセットプレート（２０）の中の液体（２７）に対しても同様である。  Further, in order to alleviate expansion or the like due to the temperature rise of the liquid (47) in the die set plate (40), a check in the middle of the circuit connecting the tank (60) and the tank (60) and the liquid chamber (51) is performed. A valve (61), a check valve (62) in the middle of the circuit connecting the liquid chamber (51) and the tank (60), a cylinder (63), a piston (64), an elastic material (65), and pressure control It is also preferable to provide a valve (66) and a cooler (67) and replace the liquid (47) in the liquid chamber (51) by a certain amount each time the press machine slides down. The same applies to the liquid (27) in the die set plate (20).

図７及び図８にも示してあるが、一対のダイセットプレート（２０）及び（４０）はいずれがプレス機械のスライドに取り付けられても、同様な機能を発揮する。  As shown in FIGS. 7 and 8, the pair of die set plates (20) and (40) perform the same function regardless of which is attached to the slide of the press machine.

発明の効果The invention's effect

プレス機械に使用する閉塞鍛造装置において、アキュムレータ等の外部圧力発生装置と、外部圧力発生装置からプレス機械のスライド及びボルスタまでの配管と、ダイ位置規制装置が不要となり、安価でエネルギ消費の少ない閉塞鍛造装置で生産することができる。  Closed forging equipment used in press machines eliminates the need for external pressure generators such as accumulators, piping from external pressure generators to the slides and bolsters of press machines, and die position control devices, which are inexpensive and have low energy consumption. Can be produced with a forging device.

スパイダの鍛造完成品の平面図  Top view of spider forged finished product スパイダの鍛造完成品の断面図  Cross section of spider forged finished product スパイダの素材図  Spider material map 従来の閉塞鍛造装置の作動図  Operation diagram of conventional closed forging equipment 従来の閉塞鍛造装置の必要設備概略図  Necessary equipment schematic diagram of conventional closed forging equipment パンチとダイが成形時に成形品（１）に及ぼす加工域の面積の説明図  Explanatory drawing of the area of the processing area that the punch and die have on the molded product (1) 本発明の請求項１の装置の断面図  Sectional view of the device of claim 1 of the present invention 本発明の請求項２及び請求項３の装置の断面図  Sectional view of the apparatus of claims 2 and 3 of the present invention

符号の説明Explanation of symbols

（２０）ダイセットプレート
（２１）可動ダイ
（２３）固定パンチ
（２４）ダイ側ピストン
（２９）前進用ピストン
（４０）ダイセットプレート
（４１）固定ダイ
（４３）可動パンチ
（４４）パンチ側ピストン
（４９）後退用ピストン
（９１）外部ノックアウトピン
（９２）外部ノックアウトピン
（９３）外部クッションピン(20) Die set plate (21) Movable die (23) Fixed punch (24) Die side piston (29) Advance piston (40) Die set plate (41) Fixed die (43) Movable punch (44) Punch side piston (49) Retraction piston (91) External knockout pin (92) External knockout pin (93) External cushion pin

Claims (2)

プレス機械に取付けて使用する対向する一対のダイセットプレート（２０）及び（４０）において、ダイセットプレート（２０）には表側に成形面を型彫りされた上下方向に摺動可能な可動ダイ（２１）と、可動ダイ（２１）を上下方向に摺動可能に位置決め保持したダイホルダ（２２）と、可動ダイ（２１）の貫通穴部に間接的に設置され表側に成形面を型彫りされた固定パンチ（２３）と、可動ダイ（２１）の裏側のダイ側ピストン（２４）と、ダイ側ピストン（２４）を収納するダイ側シリンダ（２５）と、ダイ側ピストン（２４）を作動前の定位置に附勢する弾発機構（２６）と、ダイ側シリンダ（２５）内に満たされた液体（２７）と、ダイ側シリンダ（２５）と液体（２７）が流通可能な通路で繋がっている前進用シリンダ（２８）と、前進用シリンダ（２８）に収納された前進用ピストン（２９）と、前進用ピストン（２９）を作動前の定位置に附勢する弾発機構（３０）と、液体（２７）で隙間なく満たされた液体室（３１）を設け、ダイセットプレート（４０）には可動ダイ（２１）と対向し表側に成形面を型彫りされた固定ダイ（４１）と、固定ダイ（４１）を位置決め保持したダイホルダ（４２）と、固定ダイ（４１）の貫通穴部に間接的に設置され上下方向に摺動可能で表側に成形面を型彫りされた可動パンチ（４３）と、可動パンチ（４３）の裏側のパンチ側ピストン（４４）と、パンチ側ピストン（４４）を収納するパンチ側シリンダ（４５）と、パンチ側ピストン（４４）を作動前の定位置に附勢する弾発機構（４６）と、パンチ側シリンダ（４５）内に満たされた液体（４７）と、パンチ側シリンダ（４５）と液体（４７）が流通可能な通路で繋がっている後退用シリンダ（４８）と、前進用ピストン（２９）に対向し後退用シリンダ（４８）に収納された後退用ピストン（４９）と、後退用ピストン（４９）を作動前の定位置に附勢する弾発機構（５０）と、液体（４７）で隙間なく満たされた液体室（５１）を設け、成形時における可動ダイ（２１）と固定ダイ（４１）の当接する力を、液体（２７）と液体（４７）を介して固定パンチ（２３）と可動パンチ（４３）の潰し成形する力に変換させるとともに、可動パンチ（４３）の位置を制御することを特徴とする閉塞鍛造装置。  In a pair of opposing die set plates (20) and (40) used by being attached to a press machine, the die set plate (20) has a movable die (with a molding surface engraved on the front side and slidable in the vertical direction) 21), a die holder (22) in which the movable die (21) is positioned and held so as to be slidable in the vertical direction, and the molding surface is die-cut on the front side, which is indirectly installed in the through-hole portion of the movable die (21). The fixed punch (23), the die side piston (24) on the back side of the movable die (21), the die side cylinder (25) for housing the die side piston (24), and the die side piston (24) before the operation The elastic mechanism (26) energizing the fixed position, the liquid (27) filled in the die side cylinder (25), and the passage through which the die side cylinder (25) and the liquid (27) can flow are connected. Forward cylinder (2 ), A forward piston (29) housed in the forward cylinder (28), a resilient mechanism (30) for biasing the forward piston (29) to a fixed position before operation, and a liquid (27). A liquid chamber (31) filled with no gap is provided, and a fixed die (41) having a molding surface engraved on the front side facing the movable die (21) on the die set plate (40), and a fixed die (41) A die holder (42) that is positioned and held, a movable punch (43) that is indirectly placed in the through hole portion of the fixed die (41), is slidable in the vertical direction, and has a molding surface engraved on the front side, and a movable punch A punch side piston (44) on the back side of (43), a punch side cylinder (45) that houses the punch side piston (44), and a resilient mechanism that urges the punch side piston (44) to a fixed position before operation. (46) and punch side cylinder (45 The liquid (47) filled therein, the retreat cylinder (48) connected by a passage through which the punch side cylinder (45) and the liquid (47) can flow, and the retreat cylinder facing the advance piston (29) The retraction piston (49) housed in the cylinder (48), the repelling mechanism (50) for urging the retraction piston (49) to a fixed position before operation, and the liquid (47) filled with no gap. A liquid chamber (51) is provided, and the contact force between the movable die (21) and the fixed die (41) at the time of molding is applied to the fixed punch (23) and the movable punch (43 through the liquid (27) and the liquid (47). ) For crushing and forming, and the position of the movable punch (43) is controlled. ダイセットプレート（２０）に設けられたダイ側シリンダ（２５）内に、上下方向に摺動可能でダイセットプレート（２０）を貫通する与圧ピン（３９）を設けて、外部力を可動ダイ（２１）と固定ダイ（４１）の当接する力に加算させることを特徴とする請求項１に記載の閉塞鍛造装置。  In the die side cylinder (25) provided on the die set plate (20), a pressurizing pin (39) that is slidable in the vertical direction and penetrates the die set plate (20) is provided, and external force is transferred to the movable die. The closed forging device according to claim 1, wherein the forging device is added to the abutting force of the fixed die (41).
JP2008315046A 2008-11-13 2008-11-13 Closed forging apparatus Pending JP2010115703A (en)

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WO2011111831A1 (en) 2010-03-12 2011-09-15 日本曹達株式会社 Compound containing pyridine ring and method for producing halogenated picoline derivative and tetrazolyloxime derivative
CN103111576A (en) * 2013-02-27 2013-05-22 江苏中兴西田数控科技有限公司 Die move limiting device
CN103769514A (en) * 2014-01-13 2014-05-07 合肥合锻机床股份有限公司 Cylinder moving type hydraulic machine
WO2016034148A1 (en) * 2014-09-03 2016-03-10 杨东佐 Upsetting machine and working method
CN109108143A (en) * 2018-07-16 2019-01-01 深圳大学 Micro-volume molding die

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JPH0333077B2 (en) * 1985-01-14 1991-05-15 Komatsu Mfg Co Ltd
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JP2001105081A (en) * 1999-10-04 2001-04-17 Cleartec:Kk Closed forging apparatus
JP2004524978A (en) * 2001-05-11 2004-08-19 ハテブル ウムフオルマシネン アクチエンゲゼルシャフト Hydraulic mechanical closing device
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011111831A1 (en) 2010-03-12 2011-09-15 日本曹達株式会社 Compound containing pyridine ring and method for producing halogenated picoline derivative and tetrazolyloxime derivative
CN103111576A (en) * 2013-02-27 2013-05-22 江苏中兴西田数控科技有限公司 Die move limiting device
CN103769514A (en) * 2014-01-13 2014-05-07 合肥合锻机床股份有限公司 Cylinder moving type hydraulic machine
CN103769514B (en) * 2014-01-13 2015-11-04 合肥合锻机床股份有限公司 Cylinder driven type hydraulic press
WO2016034148A1 (en) * 2014-09-03 2016-03-10 杨东佐 Upsetting machine and working method
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CN109108143A (en) * 2018-07-16 2019-01-01 深圳大学 Micro-volume molding die
CN109108143B (en) * 2018-07-16 2020-06-05 深圳大学 Micro-volume forming die

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