JP2016043399A - Powder molding device - Google Patents

Powder molding device Download PDF

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JP2016043399A
JP2016043399A JP2014171415A JP2014171415A JP2016043399A JP 2016043399 A JP2016043399 A JP 2016043399A JP 2014171415 A JP2014171415 A JP 2014171415A JP 2014171415 A JP2014171415 A JP 2014171415A JP 2016043399 A JP2016043399 A JP 2016043399A
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punch
angle phase
lever
powder molding
molding apparatus
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JP6318436B2 (en
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齋藤　謙一
Kenichi Saito
謙一 齋藤
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Sumitomo Electric Sintered Alloy Ltd
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Sumitomo Electric Sintered Alloy Ltd
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Abstract

PROBLEM TO BE SOLVED: To accurately adjust an angle phase of an end surface of an oblique tooth molded by a lower 2 punch of a powder molding device by reducing the number of times of work.SOLUTION: A powder molding device is provided with a die, an upper punch, a rotatable core rod for molding an oblique tooth of an internal tooth of a helical gear, a lower 1 punch supported in a constant position for molding a part of an under surface of the helical gear, a metal mold formed by combining a lower 2 punch for molding an end surface of the oblique tooth, and an angle phase adjustment mechanism for adjusting an angle phase of the lower 2 punch. The angle phase adjustment mechanism is constituted by combining a lower 2 punch plate for supporting the lower 2 punch, a rocking lever relatively non-rotatably connected to the lower 2 punch, and a lever driving part for rotating its rocking lever in the clockwise direction and the counterclockwise direction in a plan view around the lower 2 punch.SELECTED DRAWING: Figure 1

Description

本発明は、ヘリカルギヤの製造に利用する粉末成形装置、詳しくは、ヘリカルギヤに形成される内歯の斜歯の端面を下パンチで成形する装置であり、前記下パンチの角度位相（基準位置に対する周方向の角度ずれ）を微調整する機構を含ませて角度位相の調整作業を簡単に精度良く行えるようにした粉末成形装置に関する。   The present invention relates to a powder molding apparatus used for manufacturing a helical gear, and more specifically, an apparatus for molding an end face of an inclined tooth of an internal tooth formed on a helical gear with a lower punch, and an angular phase of the lower punch (a circumferential position relative to a reference position). The present invention relates to a powder molding apparatus that includes a mechanism that finely adjusts an angle deviation in a direction so that an angle phase adjustment operation can be performed easily and accurately.

粉末冶金法で製造されるヘリカルギヤの中に、そのギヤの基準位置に対する斜歯の角度位相が規格を満たしていることが要求されるものがある。   Some helical gears manufactured by powder metallurgy require that the angle phase of the inclined teeth with respect to the reference position of the gear satisfy the standard.

例えば、図７、図８に示したヘリカルギヤ３０は、有底筒状をなす基部３１と、その基部の筒の内面に形成された内歯の斜歯３２と、基部３１の外周に径方向外向きに張り出して設けられた凸部３３を有している。   For example, the helical gear 30 shown in FIGS. 7 and 8 includes a base portion 31 having a bottomed cylindrical shape, inclined teeth 32 of inner teeth formed on the inner surface of the cylinder of the base portion, and a radially outer portion on the outer periphery of the base portion 31. A projection 33 is provided so as to protrude in the direction.

このヘリカルギヤ３０について、例えば、凸部３３を基準にしてその凸部３３に対する斜歯３２の角度位相が設定範囲内にあるように規定されているとする。   For this helical gear 30, for example, it is assumed that the angular phase of the inclined teeth 32 with respect to the convex portion 33 is defined within the set range with respect to the convex portion 33.

そのような製品（ヘリカルギヤ）は、製造時に、製品の基部の外周を成形するダイと、基部３１の上面を成形する上パンチと、基部３１の下面の一部を成形する下１パンチと、基部３１の下面に含まれた斜歯３２の端面を成形する下２パンチと、基部３１の下面に開放した孔と孔面の斜歯３２を成形するコアロッドを組み合わせた金型を使用して粉末成形装置で原料粉末の成形を行っている。   Such a product (helical gear) includes a die that molds the outer periphery of the base of the product, an upper punch that molds the upper surface of the base 31, a lower punch that molds a part of the lower surface of the base 31, and a base. Powder molding using a die that combines the lower two punches for forming the end face of the inclined teeth 32 included in the lower surface of 31, the hole opened on the lower surface of the base 31 and the core rod for forming the inclined teeth 32 on the hole surface. The raw material powder is molded by the equipment.

そして、その成形に際し、凸部３３に対する斜歯３２の角度位相を合わせるために、テスト成形→得られた成形体の斜歯３２の角度位相の測定→金型位相の調整を繰り返しており、また、金型位相の調整は、下２パンチを人手によって直接回転させる方法で行っている。   During the molding, in order to match the angular phase of the inclined teeth 32 with respect to the convex portion 33, test molding → measurement of the angular phase of the inclined teeth 32 of the obtained molded body → adjustment of the mold phase is repeated, and The mold phase is adjusted by directly rotating the lower two punches manually.

なお、ヘリカルギヤを成形する粉末成形装置としては、例えば、下記特許文献１に記載されたものなどが知られている。   In addition, as a powder shaping | molding apparatus which shape | molds a helical gear, what was described in the following patent document 1 etc. is known, for example.

特開２０１３−２１５７９０号公報JP 2013-215790 A

上述した人手による下２パンチの角度位相の調整は、精度が悪く、調整作業の繰り返し回数が多くなっている。   The adjustment of the angle phase of the lower two punches described above by hand is inaccurate, and the number of adjustment operations is increased.

その角度位相の調整は、１度行えば済むものではない。成形装置の金型に含まれるパンチは、成形圧を受ける先端の経時摩耗が避けられず、その摩耗がある程度進行すると摩耗した先端を研磨して成形面を再生することが行われている。   The adjustment of the angle phase is not necessarily performed once. The punch included in the mold of the molding apparatus is inevitably worn over the tip subjected to the molding pressure, and when the wear proceeds to some extent, the worn tip is polished to regenerate the molding surface.

その再生により再生前後の角度位相にずれが生じるため、下２パンチの先端を削って成形面を再生する度に角度位相の調整を行っており、その作業が要求される粉末成形装置については、装置の稼働率低下や労力の浪費が生じていた。   Since the angular phase before and after the reproduction shifts due to the reproduction, the angle phase is adjusted every time the molding surface is reproduced by scraping the tip of the lower two punches. The operation rate of the equipment was reduced and labor wasted.

その調整作業の精度や効率を高める工夫は、前掲の特許文献１などに開示されている斜歯の角度位相の規定が無い従来の粉末成形装置には見受けられない。   A device for improving the accuracy and efficiency of the adjustment work cannot be found in a conventional powder forming apparatus that does not define the angle phase of the inclined teeth disclosed in the above-mentioned Patent Document 1.

そこで、本発明は、内歯の斜歯の端面を下２パンチで成形するヘリカルギヤ用粉末成形装置の前記下２パンチの角度位相の調整を、作業回数を減らして精度良く行えるようにすることを目的とする。   Therefore, the present invention is to make it possible to adjust the angle phase of the lower two punches of the helical gear powder molding apparatus for forming the end surfaces of the inclined teeth of the inner teeth with the lower two punches with a reduced number of operations and with high accuracy. Objective.

本発明の一態様にかかる粉末成形装置は、内歯の斜歯とその斜歯の角度位相の位置基準となる部位を備えるヘリカルギヤ（焼結ヘリカルギヤ）用の粉末成形装置であって、ダイと、上パンチと、前記内歯の斜歯を成形する回転可能なコアロッドと、前記ヘリカルギヤ下面の一部を成形する定位置支持の下１パンチと、前記ヘリカルギヤの下面に含まれた前記斜歯の端面を成形する下２パンチを組み合わせた金型と、前記下２パンチの角度位相を調整する角度位相調整機構を具備したものである。   A powder molding apparatus according to an aspect of the present invention is a powder molding apparatus for a helical gear (sintered helical gear) including a portion serving as a positional reference of the internal teeth and the angular phase of the teeth. An upper punch, a rotatable core rod for forming the inner teeth of the inclined teeth, a lower punch for supporting a fixed position for forming a part of the lower surface of the helical gear, and an end face of the inclined teeth included in the lower surface of the helical gear And a mold for combining the lower two punches for molding and an angle phase adjusting mechanism for adjusting the angular phase of the lower two punches.

この発明によれば、調整機構による角度位相の高精度調整が少ない作業回数で行える。   According to the present invention, high-precision adjustment of the angle phase by the adjustment mechanism can be performed with a small number of operations.

本発明の一態様にかかる粉末成形装置の成形前の状態を示す断面図である。It is sectional drawing which shows the state before shaping | molding of the powder shaping | molding apparatus concerning 1 aspect of this invention. 図１の粉末成形装置の粉末圧縮完了状態を示す断面図である。It is sectional drawing which shows the powder compression completion state of the powder shaping | molding apparatus of FIG. 図１の粉末成形装置に含ませた下２パンチの角度位相調整機構の平面図である。It is a top view of the angle phase adjustment mechanism of the lower 2 punch included in the powder molding apparatus of FIG. 図３のＸ−Ｘ線に沿った断面図である。It is sectional drawing along the XX line of FIG. 図３のＹ−Ｙ線に沿った断面図である。It is sectional drawing along the YY line of FIG. 図３の角度位相調整機構の揺動レバーを回動させた状態を示す平面図である。It is a top view which shows the state which rotated the rocking | fluctuation lever of the angle phase adjustment mechanism of FIG. 基部の基準位置に対する斜歯の端面の角度位相が規定されたヘリカルギヤの一例を示す底面図である。It is a bottom view which shows an example of the helical gear with which the angle phase of the end surface of the inclined tooth with respect to the reference position of a base was prescribed | regulated. 図７のヘリカルギヤの縦断面図である。It is a longitudinal cross-sectional view of the helical gear of FIG.

［本発明の実施形態の説明］
本発明の一態様にかかる粉末成形装置は、内歯の斜歯を有するヘリカルギヤを成形するものであって、ダイと、前記基部の上面（斜歯が開放していない側の端面）を成形する上パンチと、前記内歯の斜歯を成形する回転可能なコアロッドと、前記ヘリカルギヤの下面の一部を成形する定位置支持の下１パンチと、前記ヘリカルギヤの下面に含まれた前記斜歯の端面を成形する下２パンチを備えている。そしてさらに、下２パンチの角度位相を調整する角度位相調整機構を備えている。 [Description of Embodiment of the Present Invention]
A powder molding apparatus according to an aspect of the present invention is for molding a helical gear having internal oblique teeth, and forms a die and the upper surface of the base (the end surface on the side where the oblique teeth are not open). An upper punch, a rotatable core rod for forming the inner tooth bevel, a lower punch for supporting a fixed position for forming a part of the lower surface of the helical gear, and the bevel tooth included in the lower surface of the helical gear. The lower 2 punches for forming the end face are provided. Further, an angle phase adjustment mechanism for adjusting the angle phase of the lower two punches is provided.

ダイは、前記ヘリカルギヤの筒状基部の外周を成形する。また、上パンチはヘリカルギヤの上面（斜歯が開放していない側の端面）を成形し、下１パンチはヘリカルギヤの下面の外周側を成形する。   The die forms the outer periphery of the cylindrical base portion of the helical gear. The upper punch forms the upper surface of the helical gear (the end surface on the side where the inclined teeth are not open), and the lower punch forms the outer peripheral side of the lower surface of the helical gear.

かかる粉末成形装置に設ける前記角度位相調整機構は、下２パンチを定位置回転可能に支持するパンチホルダと、下２パンチに連結される揺動レバーと、その揺動レバーを押し引きして前記下２パンチを中心にして平面視において右回り方向と左回り方向に回転させるレバー駆動部とで構成することができる。   The angle phase adjusting mechanism provided in the powder forming apparatus includes a punch holder that supports the lower two punches so that the lower two punches can rotate at a fixed position, a swing lever that is connected to the lower two punches, and pushes and pulls the swing lever to It can be composed of a lever driving unit that rotates in the clockwise direction and the counterclockwise direction in plan view with the lower two punches as the center.

レバー駆動部による揺動レバーの押し引き量は指示器を付属させて確認することができ、その押し引き量とパンチホルダの回転角（角度位相の変化量）の関係を予め求めておけば、角度位相の調整を指示器によって表示される数値を確認しながら行うことができる。   The push-pull amount of the swing lever by the lever drive unit can be confirmed by attaching an indicator, and if the relationship between the push-pull amount and the rotation angle of the punch holder (amount of change in angle phase) is obtained in advance, The angle phase can be adjusted while confirming the numerical value displayed by the indicator.

これにより、調整の精度が高まり、調整のずれを修正する無駄な作業が減少して調整の作業回数が少なくなる。   As a result, the accuracy of the adjustment is increased, the useless work for correcting the deviation of the adjustment is reduced, and the number of adjustment work is reduced.

［本発明の実施形態の詳細］
本発明の一態様にかかる粉末成形装置の具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれ等の例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 [Details of the embodiment of the present invention]
Specific examples of the powder molding apparatus according to one embodiment of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and it is intended that all the changes within the meaning and range equivalent to a claim are included.

例示の粉末成形装置１は、図７、図８に示したヘリカルギヤ３０を成形するものであって、図１、図２に示すように、ダイ２と、上パンチ３と、下１パンチ４と、下２パンチ５と、コアロッド６を備えている。そしてさらに、下２パンチの角度位相を調整する角度位相調整機構７（図３〜図６参照）を備えている。   The exemplary powder forming apparatus 1 forms the helical gear 30 shown in FIGS. 7 and 8. As shown in FIGS. 1 and 2, the die 2, the upper punch 3, and the lower 1 punch 4 The lower 2 punch 5 and the core rod 6 are provided. Further, an angle phase adjusting mechanism 7 (see FIGS. 3 to 6) for adjusting the angle phase of the lower two punches is provided.

図１は成形を開始する前の初期状態を、図２は、上パンチ３が下死点に到達した圧縮完了状態をそれぞれ表している。   FIG. 1 shows an initial state before starting molding, and FIG. 2 shows a compression completed state in which the upper punch 3 has reached the bottom dead center.

ダイ２は、製造するヘリカルギヤ３０の筒状に形成される基部３１の外周を成形する。また、上パンチ３は基部３１の上面を成形する。この上パンチ３は、必要に応じて複数に分割したものが用いられることがある。   The die 2 molds the outer periphery of a base 31 formed in a cylindrical shape of the helical gear 30 to be manufactured. The upper punch 3 forms the upper surface of the base 31. The upper punch 3 may be divided into a plurality of pieces as necessary.

下１パンチ４は、ヘリカルギヤ３０の基部３１の外周側の下面を成形する。また、下２パンチ５は、先端の成形面によって前記基部３１の下面に含まれた斜歯３２の端面を成形する。   The lower one punch 4 forms the lower surface on the outer peripheral side of the base portion 31 of the helical gear 30. The lower two punches 5 form the end surfaces of the inclined teeth 32 included in the lower surface of the base portion 31 by the molding surface at the tip.

さらに、コアロッド６は、軸受８を介して成形装置のヨーク９に回転可能に支持されており、このコアロッド６が前記基部３１の下面に開放した孔と孔面の斜歯３２を成形する。このコアロッド６は、所定のリードを有する成形用の歯と歯溝を先端側外周に有しており、その先端側外周によって斜歯３２が成形される。   Further, the core rod 6 is rotatably supported by the yoke 9 of the molding apparatus via the bearing 8, and the core rod 6 forms a hole opened on the lower surface of the base portion 31 and the inclined teeth 32 of the hole surface. The core rod 6 has a forming tooth having a predetermined lead and a tooth groove on the outer periphery on the front end side, and the inclined tooth 32 is formed by the outer periphery on the front end side.

このコアロッド６は、成形完了後の成形体Ａ（図２参照）を金型のキャビティから払い出す際に、斜歯３２のリードの影響を受けて回転する。   The core rod 6 rotates under the influence of the lead of the inclined teeth 32 when the molded product A (see FIG. 2) after completion of molding is discharged from the cavity of the mold.

図示の粉末成形装置１は、下２パンチ５の角度位相を前記基部３１の外周に形成される基準位置（図７の凸部３３など）に対して規定を満たすように調整することが要求され、かかる要求に応えるために角度位相調整機構７が設けられている。   The illustrated powder molding apparatus 1 is required to adjust the angular phase of the lower two punches 5 so as to satisfy a regulation with respect to a reference position (such as the convex portion 33 in FIG. 7) formed on the outer periphery of the base 31. In order to meet this requirement, an angle phase adjusting mechanism 7 is provided.

図示の角度位相調整機構７は、下２パンチ５を支持する下２パンチプレート１０（これにはパンチ押えが含まれている）と、下２パンチ５に相対回転不可に連結される揺動レバー１１と、その揺動レバー１１を押し引きして前記下２パンチ５を中心にして平面視において右回り方向と左回り方向に回転させるレバー駆動部１２と、揺動レバー１１を調整位置に固定するロック部材１３とで構成されている。   The illustrated angle phase adjusting mechanism 7 includes a lower 2 punch plate 10 (including a punch presser) that supports the lower 2 punch 5, and a swing lever that is coupled to the lower 2 punch 5 so as not to be relatively rotatable. 11, a lever driving unit 12 that pushes and pulls the swing lever 11 to rotate clockwise and counterclockwise in plan view around the lower two punch 5, and the swing lever 11 is fixed at the adjustment position. And a locking member 13 to be configured.

なお、図示のロック部材１３はロックねじであるが、ねじなどに締め付けられて揺動レバー１１を押圧固定する押え金などでもよい。また、下２パンチ５を押圧固定することで揺動レバー１１の動きを間接的に止める構造のロック部材であってもよい。   Although the illustrated lock member 13 is a lock screw, a presser foot that is fastened to the screw to press and fix the swing lever 11 may be used. Moreover, the lock member of the structure which stops the motion of the rocking | fluctuation lever 11 indirectly by pressing and fixing the lower 2 punch 5 may be sufficient.

レバー駆動部１２は、入力部を有するねじ軸１２ａと、そのねじ軸の回転量を表示する指示器（インジケータ）１２ｂと、ねじ軸１２ａに螺合させたスライダ１２ｃを備えた比較的簡素で製造し易いものが用いられている。   The lever driving unit 12 is relatively simple and manufactured, including a screw shaft 12a having an input unit, an indicator 12b for displaying the rotation amount of the screw shaft, and a slider 12c screwed to the screw shaft 12a. What is easy to do is used.

スライダ１２ｃは、揺動レバー１１に設けたレバー長手方向のレバー長手方向の長孔１１ａ（図３参照）に遊嵌させている。   The slider 12 c is loosely fitted in a long hole 11 a (see FIG. 3) in the lever longitudinal direction provided in the swing lever 11.

また、図示のロック部材１３は、揺動レバー１１に形成された周方向の長孔１１ｂ（これも図３参照）に挿通されており、このロック部材１３を緩めて揺動レバー１１を動かす。   Further, the illustrated lock member 13 is inserted into a circumferential long hole 11b (also see FIG. 3) formed in the swing lever 11, and the swing member 11 is moved by loosening the lock member 13.

このように構成された角度位相調整機構７は、下２パンチプレート１０に含まれたパンチ押えによる下２パンチ５の押圧固定とロック部材１３による揺動レバー１１の固定を解いてねじ軸１２ａを回転させる。すると、図６に鎖線で示すように、ねじ軸１２ａに螺合したスライダ１２ｃがねじ軸の長手方向に移動し、その動作で揺動レバー１１の入力部側が押し引きされ、揺動レバー１１が下２パンチ５を中心に回動して下２パンチ５が回転する。   The angle phase adjusting mechanism 7 configured as described above releases the press fixing of the lower 2 punch 5 by the punch presser included in the lower 2 punch plate 10 and the fixing of the rocking lever 11 by the lock member 13 to disengage the screw shaft 12a. Rotate. Then, as indicated by a chain line in FIG. 6, the slider 12c screwed to the screw shaft 12a moves in the longitudinal direction of the screw shaft, and the operation pushes and pulls the input portion side of the swing lever 11, and the swing lever 11 moves. The lower 2 punch 5 rotates around the lower 2 punch 5.

このときの下２パンチ５の回転量（回転角）を指示器１２ｂの表示に基づいて正確に管理できる構造になっているので、下２パンチ５の角度位相の調整を高精度に、簡単に少ない作業工数で行うことができる。   Since the rotation amount (rotation angle) of the lower 2 punch 5 at this time can be accurately managed based on the display of the indicator 12b, the adjustment of the angle phase of the lower 2 punch 5 can be easily performed with high accuracy. It can be done with less work man-hours.

なお、下２パンチ５と揺動レバー１１は、下２パンチ５の根元部の外周に二面幅の面取り部を形成し、その部分に揺動レバー１１を非円形嵌合させるなどの一般的な手法で相対回転不可に連結することができる。   The lower 2 punch 5 and the swing lever 11 are generally formed by forming a chamfered portion having a two-sided width on the outer periphery of the base portion of the lower 2 punch 5 and fitting the swing lever 11 in a non-circular shape at that portion. It is possible to connect in such a way that relative rotation is impossible.

図１、図２の１４は、下２パンチプレート１０を介して下２パンチ５を支持するベースプレート、１５は下１パンチ４を支える下１パンチプレート、１６は下１パンチプレート１５をヨーク９に連結するリフティングロッド、１７はダイ２を支えるダイプレート、１８はダイプレート１７と上パンチプレート１９間に設けたダイと上パンチの位置決め部材である。図示の位置決め部材１８は、ガイドピン１８ａとガイドブッシュ１８ｂを組み合わせたものである。   In FIG. 1 and FIG. 2, 14 is a base plate that supports the lower 2 punch 5 via the lower 2 punch plate 10, 15 is the lower 1 punch plate that supports the lower 1 punch 4, and 16 is the lower 1 punch plate 15 on the yoke 9. Lifting rods to be connected, 17 is a die plate that supports the die 2, and 18 is a die and upper punch positioning member provided between the die plate 17 and the upper punch plate 19. The illustrated positioning member 18 is a combination of a guide pin 18a and a guide bush 18b.

また、２０は圧縮完了点で下１パンチプレート１５を受け止めるフォーク、２１は、フォーク２０をプレート受け止め点から退避させるカムとカムフォロアである。これ等の要素は既知のものであり、この発明を特徴づけるものではない。   Reference numeral 20 denotes a fork that receives the lower punch plate 15 at the compression completion point, and reference numeral 21 denotes a cam and a cam follower that retract the fork 20 from the plate receiving point. These elements are known and do not characterize the invention.

図示の粉末成形装置１の動作は、成形体Ａを金型のキャビティから払い出す際にコアロッド６が回転する点を除くと一般的な粉末成形機とさして変わりが無いので、ここでの説明は省く。   The operation of the illustrated powder molding apparatus 1 is the same as that of a general powder molding machine except that the core rod 6 rotates when the molded body A is discharged from the cavity of the mold. Omit.

なお、角度位相調整機構７は、ねじ軸で推進させるスライダの直進運動を回転運動に変換して下２パンチ５に伝達するものを例示したが、これに限定されるものではない。   In addition, although the angle phase adjustment mechanism 7 illustrated what converted the linear motion of the slider propelled with a screw shaft into a rotational motion, and transmitted to the lower 2 punch 5, it is not limited to this.

例えば、図示の揺動レバー１１にガイドピン（図示省略）を垂下させて設け、そのガイドピンを下２パンチ５と同心の円に沿って形成された円弧のガイド溝（これも省略）に挿入し、ガイド溝の縁に角度目盛りを付し、揺動レバー１１を手動操作するなどして回動させ、このときのガイドピンの位置を角度目盛りと照合することで角度位相の変化量を確認する構造なども考えられる。   For example, a guide pin (not shown) is suspended from the swing lever 11 shown in the figure, and the guide pin is inserted into an arc guide groove (also omitted) formed along a circle concentric with the lower two punch 5. Then, attach an angle scale to the edge of the guide groove, rotate the swing lever 11 by manual operation, etc., and check the amount of change in the angle phase by checking the position of the guide pin at this time with the angle scale. A structure that can be considered.

以上述べたように、実施形態の粉末成形装置は、調整量の確認が可能な角度位相調整機構を具備しているので、斜歯の角度位相に規格がある焼結ヘリカルギヤの角度位相の調整精度を高め、さらに、調整作業の手間を減少させて装置の稼動率を高めることができる。   As described above, since the powder molding apparatus of the embodiment includes the angle phase adjustment mechanism that allows confirmation of the adjustment amount, the accuracy of adjusting the angle phase of the sintered helical gear that has a standard in the angle phase of the inclined tooth. In addition, the operation rate of the apparatus can be increased by reducing the labor of adjustment work.

１ 粉末成形装置
２ ダイ
３ 上パンチ
４ 下１パンチ
５ 下２パンチ
６ コアロッド
７ 角度位相調整機構
８ 軸受
９ ヨーク
１０ 下２パンチプレート
１１ 揺動レバー
１１ａ レバー長手方向の長孔
１１ｂ 周方向の長孔
１２ レバー駆動部
１２ａ ねじ軸
１２ｂ 指示器
１２ｃ スライダ
１３ ロック部材
１４ ベースプレート
１５ 下１パンチプレート
１６ リフティングロッド
１７ ダイプレート
１８ 位置決め部材
１９ 上パンチプレート
２０ フォーク
２１ カムとカムフォロア
３０ ヘリカルギヤ
３１ 基部
３２ 斜歯
３３ 凸部
Ａ 成形体 DESCRIPTION OF SYMBOLS 1 Powder shaping | molding apparatus 2 Die 3 Upper punch 4 Lower 1 punch 5 Lower 2 punch 6 Core rod 7 Angle phase adjustment mechanism 8 Bearing 9 Yoke 10 Lower 2 punch plate 11 Swing lever 11a Long hole 11b in the lever longitudinal direction Long hole in the circumferential direction 12 Lever drive unit 12a Screw shaft 12b Indicator 12c Slider 13 Lock member 14 Base plate 15 Lower 1 punch plate 16 Lifting rod 17 Die plate 18 Positioning member 19 Upper punch plate 20 Fork 21 Cam and cam follower 30 Helical gear 31 Base 32 Inclined teeth 33 Convex Part A molded body

Claims (4)

内歯の斜歯とその斜歯の角度位相の位置基準となる部位を備えるヘリカルギヤ用の粉末成形装置であって、ダイと、上パンチと、前記内歯の斜歯を成形する回転可能なコアロッドと、前記ヘリカルギヤの下面の一部を成形する定位置支持の下１パンチと、前記ヘリカルギヤの下面に含まれた前記斜歯の端面を成形する下２パンチを組み合わせた金型と、前記下２パンチの角度位相を調整する角度位相調整機構を具備した粉末成形装置。   A powder molding apparatus for a helical gear having an internal tooth and a portion serving as a position reference for the angle phase of the inclined tooth, a die, an upper punch, and a rotatable core rod for forming the internal tooth A mold that combines a lower punch of a fixed position for forming a part of the lower surface of the helical gear and a lower 2 punch for forming the end face of the inclined tooth included in the lower surface of the helical gear; A powder forming apparatus provided with an angle phase adjusting mechanism for adjusting an angle phase of a punch. 前記角度位相調整機構が、前記下２パンチを支持する下２パンチプレートと、前記下２パンチに相対回転不可に連結される揺動レバーと、その揺動レバーを、前記下２パンチを中心にして平面視において右回り方向と左回り方向に回転させるレバー駆動部を組み合わせて構成された請求項１に記載の粉末成形装置。   The angle phase adjusting mechanism includes a lower two punch plate that supports the lower two punches, a swing lever that is coupled to the lower two punches so as not to rotate relative to each other, and the swing lever that is centered on the lower two punches. The powder molding apparatus according to claim 1, wherein the powder molding apparatus is configured by combining a lever driving unit that rotates clockwise and counterclockwise in plan view. 前記角度位相調整機構に、前記揺動レバーを調整位置に固定するロック部材が含まれた請求項２に記載の粉末成形装置。   The powder molding apparatus according to claim 2, wherein the angle phase adjustment mechanism includes a lock member that fixes the swing lever at an adjustment position. 前記レバー駆動部として、入力部を有するねじ軸と、そのねじ軸の回転量を表示する指示器と、前記ねじ軸に螺合させたスライダを備えたものを用い、前記スライダを前記揺動レバーに設けたレバー長手方向の長孔に遊嵌させた請求項２又は請求項３に記載の粉末成形装置。   The lever drive unit includes a screw shaft having an input unit, an indicator for displaying the rotation amount of the screw shaft, and a slider screwed to the screw shaft, and the slider is moved to the swing lever. The powder molding apparatus according to claim 2 or 3, wherein the powder molding apparatus is loosely fitted in a long hole in the lever longitudinal direction provided in the lever.
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CN114311814A (en) * 2021-12-30 2022-04-12 扬州市海力精密机械制造有限公司 Excessive and insufficient adjusting mechanism of powder forming machine with single-demolding single-pressing structure and working process of excessive and insufficient adjusting mechanism

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JPH09263803A (en) * 1996-03-25 1997-10-07 Mitsubishi Materials Corp Molding device for green compact of helical gear and mold adjusting jig
JP2000094196A (en) * 1998-09-18 2000-04-04 Daidoo Denshi:Kk Compression molding device for powder
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CN108099252A (en) * 2016-11-24 2018-06-01 重庆恒源粉末冶金制品有限公司 For producing the powder shaping press of ejector pin and its application method
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CN114311814A (en) * 2021-12-30 2022-04-12 扬州市海力精密机械制造有限公司 Excessive and insufficient adjusting mechanism of powder forming machine with single-demolding single-pressing structure and working process of excessive and insufficient adjusting mechanism

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