JPS6236594Y2

JPS6236594Y2 -

Info

Publication number: JPS6236594Y2
Application number: JP10838583U
Authority: JP
Priority date: 1983-07-13
Filing date: 1983-07-13
Publication date: 1987-09-17
Also published as: JPS6017931U

Description

【考案の詳細な説明】この考案は、砥石切込送りのバツクラツシユ除
去装置に関するものである。[Detailed Description of the Invention] This invention relates to a deformation removal device using a cutting feed of a grindstone.

一般に、ジグ研削盤においては第１図に示すよ
うにハンドルａの回転によつて砥石ｂの切込送り
がなされ、かつ砥石ｂを保持したスライダーｃを
送りネジｄにより、スライドベースｅに対して摺
動させることによつて砥石送りをするようになつ
ている。この場合、第２図に示すようにスライダ
ーｃとスライドベースｅとの間にスプリングＦが
設けられ、前記送りネジｄを回動させてスライダ
ーｃを移動させた際に、スプリングｆを縮めてそ
の反発力によつて送りネジｄとこの送りネジに螺
合している送りナツトｇとの間のバツクラツシユ
を防止する構造となつている。 Generally, in a jig grinding machine, as shown in Fig. 1, a grindstone b is fed into the cut by rotating a handle a, and a slider c holding the grindstone b is slid against a slide base e by a feed screw d. The grindstone is fed by moving it. In this case, as shown in FIG. 2, a spring F is provided between the slider c and the slide base e, and when the feed screw d is rotated to move the slider c, the spring f is compressed and The structure is such that the repulsive force prevents backlash between the feed screw d and the feed nut g screwed onto the feed screw.

このようにして、送りネジｄとナツトｇとのバ
ツクラツシユを除去すれば、高精度の研削が可能
であるけれども、前記スプリングｆの圧力差（ス
ライダーｃの位置の相違によりスプリングの縮み
量の差によつて生ずる）によつて安定したバツク
ラツシユ除去効果が得られず、作業時に砥石が微
動し、研削精度を低下させ、またスプリング力が
弱いと砥石の切込戻し方向へ移動動作が不確実と
なる等の欠点があつた。 Although highly accurate grinding is possible by eliminating backlash between the feed screw d and the nut g in this way, the difference in the pressure of the spring f (the difference in the amount of contraction of the spring due to the difference in the position of the slider c) Therefore, a stable deburr removal effect cannot be obtained due to this problem, and the grinding wheel moves slightly during operation, reducing grinding accuracy. Also, if the spring force is weak, the movement of the grinding wheel in the direction of cutting back becomes uncertain. There were other drawbacks.

本考案は、上記のような従来の難点を解消する
ためになされ、送りネジとナツトとの螺合におい
て、バツクラツシユ除去用のスプリングが常時一
定の圧力を保持するようにした砥石切込送りバツ
クラツシユ除去装置を提供することを目的とす
る。この目的を達成させるために、本考案は送り
ネジの先端部にスプリングホルダを摺動自在に嵌
合すると共に、このスプリングホルダと砥石を保
持したスライダーとの間にスプリングを設け、か
つ送りネジの先端部はスプリングホルダにスラス
ト軸を介して回転可能に嵌合したボルトの端部に
設けられた非円形状の係合孔に進退可能に嵌挿
し、さらにボルトは送りネジと同ピツチに形成さ
れてスライドベースに螺合保持された構成を要旨
とするものである。 The present invention was made to solve the above-mentioned conventional problems, and is a grindstone cut-feed deformation device in which the deformation spring always maintains a constant pressure when the feed screw and nut are screwed together. The purpose is to provide equipment. In order to achieve this purpose, the present invention has a spring holder slidably fitted to the tip of the feed screw, a spring provided between the spring holder and a slider holding a grindstone, and a spring holder attached to the tip of the feed screw. The tip of the bolt is rotatably fitted into the spring holder via the thrust shaft, and the bolt is fitted into the non-circular engagement hole provided at the end of the bolt so that it can move forward and backward. The gist of this is that it is screwed and held onto a slide base.

つぎに、図面に示した実施例により本考案を説
明すると、第３図から第５図は本考案の一実施例
を示し、図において１はスライダーであり、高周
波モータ２を介して砥石（図示せず）が取付けら
れている。このスライダー１は、第５図に示すよ
うに上部に蟻１ａが形成され、クイル３に固定さ
れたスライドベース４の蟻溝４ａに係合して摺動
自在になつている。５はスライダー１に取付けら
れた送りネジであり、従来と同様に回転はできる
が、進退ができない状態となつており、中央のネ
ジ部５ａは前記スライドベース４にピボツト軸６
をもつて枢支された揺動レバー７の下部に回り止
め状態で取付けられた送りナツト８と螺合し、先
端部５ｂは断面が六角に形成され、これと反対側
の頭部５ｃは六角レンチ９用の孔が端面に形成さ
れ、この六角レンチ９により回転できるようにな
つている。１０はスプリングホルダであり、前記
送りネジ５に対して摺動自在に嵌合されると共
に、前記スライダー１の凹所１ｂに摺動自在に嵌
合され、かつ両側のバネ受部１０ａにはスライダ
ー１の孔１ｃに挿入されたスプリング１１が装着
されている。１２は送りネジ５と同ピツチのネジ
が形成されたボルトであり、その頭部は前記スプ
リングホルダ１０の凹所１０ｂにスラスト軸受１
３を介して軸回転可能に嵌装され、かつ端面には
軸線方向をなす断面六角形の孔１２ａが形成さ
れ、この孔１２ａに前記送りネジ５の六角形先端
部５ｂが嵌入されており、さらにボルト１２の先
端部は前記スライドベース４の先端部に固定され
たボルトホルダ１４に螺挿されている。 Next, the present invention will be explained with reference to an embodiment shown in the drawings. FIGS. 3 to 5 show an embodiment of the present invention. (not shown) is installed. As shown in FIG. 5, this slider 1 has a dovetail 1a formed on its upper part, and is engaged with a dovetail groove 4a of a slide base 4 fixed to the quill 3 so as to be slidable. Reference numeral 5 denotes a feed screw attached to the slider 1, and although it can rotate as in the conventional case, it cannot move forward or backward.
The tip 5b has a hexagonal cross section, and the head 5c on the opposite side has a hexagonal cross section. A hole for a wrench 9 is formed in the end face so that the hexagonal wrench 9 can be used for rotation. Reference numeral 10 denotes a spring holder, which is slidably fitted to the feed screw 5 and slidably fitted into the recess 1b of the slider 1, and the spring holder 10a on both sides has a slider holder. A spring 11 inserted into hole 1c of No. 1 is attached. Reference numeral 12 denotes a bolt having threads of the same pitch as the feed screw 5, and its head is inserted into the recess 10b of the spring holder 10 for the thrust bearing 1.
A hole 12a having a hexagonal cross-section extending in the axial direction is formed in the end surface of the lead screw 5, and the hexagonal tip 5b of the feed screw 5 is fitted into the hole 12a. Further, the tip of the bolt 12 is screwed into a bolt holder 14 fixed to the tip of the slide base 4.

この考案は、上記のように構成され、前記送り
ネジ５の頭部５ｃに六角レンチ９を嵌めて回す
と、送りネジ５がスライダー１と共に前進し、こ
れと同時に送りネジ５の六角形先端部５ｂと嵌合
しているボルト１２が回転し、このボルト１２は
送りネジ５と同ピツチであるから送りネジ５と同
速で前進させられる。このとき、スプリングホル
ダ１０はスライダー１の前進にともなつて前記ス
プリング１１を介して押し出されるが、前記のよ
うに凹所１０ｂ内にボルト１２の頭部がスラスト
軸受１３を介して嵌合されているので、このボル
ト１２と一緒に移動することになる。従つて、ス
ライダー１の移動によつて砥石送りがなされて
も、スプリング１１力の変化はないので常時一定
の圧力が保持され、従来のようにスプリングの圧
力差によつて生ずるバツクラツシユ効果のバラツ
キや、砥石の緩慢な戻し動作等が未然に防止され
る。なお、砥石の切込み送りは、従来と同様に砥
石切込用のハンドルを回すことによりなされ、こ
のハンドルから前記レバー７に伝え、送りナツト
８を介して送りネジ５を押すことになるが、この
送りネジ５の先端部５ｂは前記のようにボルト１
２の頭部に形成された孔１２ａに嵌挿されている
ので、送りネジ５の先端部５ｂが孔１２ａの内部
を進み、何ら支障が生じることはない。 This device is constructed as described above, and when the hexagonal wrench 9 is fitted into the head 5c of the feed screw 5 and turned, the feed screw 5 moves forward together with the slider 1, and at the same time, the hexagonal tip of the feed screw 5 moves forward. 5b rotates, and since this bolt 12 has the same pitch as the feed screw 5, it is moved forward at the same speed as the feed screw 5. At this time, the spring holder 10 is pushed out via the spring 11 as the slider 1 moves forward, but the head of the bolt 12 is fitted into the recess 10b via the thrust bearing 13 as described above. Therefore, it will move together with this bolt 12. Therefore, even if the grindstone is fed by moving the slider 1, the force of the spring 11 does not change, so a constant pressure is maintained at all times. This prevents the grindstone from returning slowly. Note that the cutting feed of the grindstone is done by turning the grindstone cutting handle as in the past, and the information is transmitted from this handle to the lever 7, which pushes the feed screw 5 via the feed nut 8. The tip 5b of the feed screw 5 is connected to the bolt 1 as described above.
2, the leading end 5b of the feed screw 5 advances inside the hole 12a without causing any trouble.

以上説明したように、本考案によれば、バツク
ラツシユ除去用のスプリングが砥石の送り量の如
何に拘らず常に一定値を保持できるようにしたの
で、適切なスプリング力を設定することができ、
砥石位置が安定して良好な研削面が得られ、かつ
切込戻しの動きも円滑かつ確実になる等のすぐれ
た効果が得られる。 As explained above, according to the present invention, the spring for removing bumps can always maintain a constant value regardless of the feed rate of the grinding wheel, so it is possible to set an appropriate spring force.
Excellent effects such as stabilizing the grinding wheel position, obtaining a good grinding surface, and smooth and reliable back-cutting movement can be obtained.

[Brief explanation of the drawing]

第１図は従来のジグ研削盤の概略断面図、第２
図はそのＡ部の拡大断面図、第３図は本考案に係
る装置要部の断面図、第４図はそのＢ−Ｂ線断面
図、第５図は同じくＣ−Ｃ線断面図である。１……スライダー、２……高周波モータ、３…
…クイル、４……スライドベース、５……送りネ
ジ、６……ピボツト軸、７……揺動レバー、８…
…送りナツト、９……六角レンチ、１０……スプ
リングホルダ、１１……スプリング、１２……ボ
ルト、１３……スラスト軸受、１４……ボルトホ
ルダ。 Figure 1 is a schematic cross-sectional view of a conventional jig grinder, Figure 2
The figure is an enlarged sectional view of part A, FIG. 3 is a sectional view of the main parts of the device according to the present invention, FIG. 4 is a sectional view taken along line B-B, and FIG. 5 is a sectional view taken along line C-C. . 1...Slider, 2...High frequency motor, 3...
... Quill, 4 ... Slide base, 5 ... Feed screw, 6 ... Pivot shaft, 7 ... Swing lever, 8 ...
...Feed nut, 9...Hexagonal wrench, 10...Spring holder, 11...Spring, 12...Bolt, 13...Thrust bearing, 14...Bolt holder.

Claims

[Scope of utility model registration request]

A slider holding a grindstone is provided so as to be slidable on a slide base fixed to the quill, and this slider has a feed nut fixedly attached to a swing lever pivotally supported on the slide base. In the grindstone cutting feed back crush removal device, in which a feed screw screwed into the feed screw is installed in a state that cannot move forward or backward, and a spring is installed between the slider and the slide base, a spring holder slides on the tip of the feed screw. The spring is provided between the spring holder and the slider, and the tip of the feed screw is connected to a bolt rotatably fitted to the spring holder via a thrust bearing. The end portion has a non-circular cross-sectional shape and is fitted into an engaging hole provided in the axial direction so as to be able to move forward and backward, and the bolt is formed at the same pitch as the feed screw, and the end portion is attached to the slide base. A grindstone cutting feed back crush removal device consisting of a screwed structure.