JP2001018197A - Boring method for elastic body - Google Patents
Boring method for elastic bodyInfo
- Publication number
- JP2001018197A JP2001018197A JP11195908A JP19590899A JP2001018197A JP 2001018197 A JP2001018197 A JP 2001018197A JP 11195908 A JP11195908 A JP 11195908A JP 19590899 A JP19590899 A JP 19590899A JP 2001018197 A JP2001018197 A JP 2001018197A
- Authority
- JP
- Japan
- Prior art keywords
- elastic body
- drill
- elastic
- hole
- frame
- 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.)
- Pending
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、複写機やプリンタ
ーの給紙ローラやトナー供給用ローラ等として用いられ
る弾性ローラを製造する際等において、弾性体に、シャ
フトを挿入するための孔を穿孔する弾性体に対する穿孔
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an elastic roller used as a paper supply roller or a toner supply roller of a copier or a printer, and the like, by drilling a hole for inserting a shaft into an elastic body. The present invention relates to a method for piercing an elastic body.
【0002】[0002]
【従来の技術】弾性ローラにシャフト挿入用の貫通孔を
開ける方法の従来例が、例えば、特開平8−12699
7号公報に記載されている。2. Description of the Related Art A conventional example of a method of forming a through hole for inserting a shaft in an elastic roller is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 8-12699.
No. 7 is described.
【0003】この公報に記載のものでは、左右方向を向
く中空かつ角柱状の箱型をなし、右側の端面の中心部に
孔が穿設され、かつ左側の端面が開口する枠体の内部
に、この枠体の断面形状と同様の断面形状をなす角柱状
のスポンジゴムやウレタン等の弾性体、すなわちワーク
を詰めて、枠体の断面形状と同じ断面形状をなす押圧部
材を、枠体の左側の開口部から枠体の内部に押し込ん
で、弾性体を元の長さの約1/3〜4/5に圧縮する。[0003] In this publication, a hollow and prismatic box shape facing left and right is formed, and a hole is formed in the center of the right end face and the inside of the frame body is opened at the left end face. An elastic body such as a sponge rubber or urethane having a cross section similar to the cross section of the frame body, that is, a pressing member having the same cross section shape as the cross section shape of the frame body is packed with a work. The elastic body is pressed into the inside of the frame through the opening on the left side to compress the elastic body to about 3 to / of the original length.
【0004】次いで、枠体の右側の端面の孔から、左右
両端が開口するとともに、その左端が円形の刃部となっ
ている薄肉円筒形の小径の円筒状刃物を、その軸線方向
に回転させながら弾性体の右側の端面の中心部に押し当
てて、そのまま弾性体の左側の端面まで回転させながら
直進させる。Next, a thin cylindrical small-diameter blade having a circular edge at the left end and a left end at the right end face of the frame body is opened through a hole in the right end face thereof, and is rotated in the axial direction. While pressing against the center of the right end face of the elastic body, the straight body is rotated while rotating to the left end face of the elastic body.
【0005】小径の円筒状刃物が弾性体の左側の端面ま
で到達した後、この円筒状刃物を弾性体から引き抜く
と、弾性体の中心部に、小径かつ円形の貫通孔が形成さ
れる。その後、製造しようとする弾性ローラの径と同径
である大径の円筒状刃物を、上記の円筒状刃物の進行経
路と同心をなすようにして、弾性体の右側の端面から左
側の端面まで回転させながら直進させ、大径の円筒状刃
物によって弾性体からくり抜かれたものを、大径の円筒
状刃物の内部から取り出し、これを元の長さに弾性復帰
させると、円柱状の弾性ローラが完成する。その後、こ
の弾性ローラの貫通孔にシャフトを嵌合する。After the small-diameter cylindrical blade reaches the left end face of the elastic body, when the cylindrical blade is pulled out of the elastic body, a small-diameter and circular through hole is formed in the center of the elastic body. Then, a large-diameter cylindrical blade that is the same diameter as the elastic roller to be manufactured is concentric with the traveling path of the cylindrical blade, from the right end surface to the left end surface of the elastic body. Rotate it straight while rotating, take out the hollowed-out piece from the elastic body with the large-diameter cylindrical blade from the inside of the large-diameter cylindrical blade, and elastically return it to its original length. Complete. Thereafter, the shaft is fitted into the through hole of the elastic roller.
【0006】[0006]
【発明が解決しようとする課題】しかし、小径の円筒状
刃物は薄肉であるため、これを繰り返し使用すると、弾
性体の内部との摩擦抵抗等の影響により、比較的短時間
のうちに小径の円筒状刃物が変形を起こしてしまうた
め、小径の円筒状刃物の寿命は短かい。However, since the small-diameter cylindrical cutting tool is thin, if it is repeatedly used, the small-diameter cylindrical cutting tool may be used in a relatively short time due to the frictional resistance with the inside of the elastic body. Since the cylindrical blade is deformed, the life of the small-diameter cylindrical blade is short.
【0007】また、小径の円筒状刃物は薄肉であるた
め、研削中に弾性体の内部でぶれを起こしやすく、この
ため、貫通孔が直線状に穿設されないことがある。In addition, since the small-diameter cylindrical cutting tool is thin, it tends to be shaken inside the elastic body during grinding, so that the through-hole may not be formed in a straight line.
【0008】さらに、小径の円筒状刃物が弾性体の内部
を研削中に、円筒状刃物の内部に取り込まれた弾性体の
一部が、円筒状刃物の回転につられてその内部でねじれ
てしまい、この結果、円筒状刃物の先方にある弾性体の
一部が円筒状刃物の内部に巻き込まれ、この状態で円筒
状刃物が漸次進むと、完成した貫通孔は、左側に向かう
につれてその径が大きくなるため、その内径を一定にす
ることが難しい。Further, while the small-diameter cylindrical blade is grinding the inside of the elastic body, a part of the elastic body taken into the inside of the cylindrical blade is twisted in the inside by the rotation of the cylindrical blade. As a result, a part of the elastic body in front of the cylindrical blade is caught inside the cylindrical blade, and when the cylindrical blade gradually advances in this state, the diameter of the completed through-hole increases toward the left side. Because it is large, it is difficult to keep the inside diameter constant.
【0009】また、弾性体の材料によっては、円筒状刃
物との摩擦抵抗が大きくなることがあり、このような場
合、貫通孔の内面を綺麗に仕上げるために、予め円筒状
刃物に摺動潤滑剤を塗布しなければならず、貫通孔を穿
設する作業に手間がかかる。Also, depending on the material of the elastic body, the frictional resistance with the cylindrical blade may increase. In such a case, the cylindrical blade must be lubricated beforehand in order to clean the inner surface of the through hole. An agent must be applied, and the operation of forming a through-hole is troublesome.
【0010】本発明は、従来の技術が有する上記のよう
な問題点に鑑みてなされたもので、穿孔工具の寿命を長
くすることができるとともに、弾性体に、直線性及び真
円度が高く、しかも径の変動が少なく、内面が美麗な孔
を形成することができるようにした弾性体に対する穿孔
方法を提供することを目的としている。The present invention has been made in view of the above-mentioned problems of the prior art, and can extend the life of a drilling tool and provide an elastic body with high linearity and high roundness. Further, it is an object of the present invention to provide a method for piercing an elastic body with a small diameter variation and capable of forming a beautiful hole on the inner surface.
【0011】[0011]
【課題を解決するための手段】本発明によると、上記課
題は、次のようにして解決される。 (1) 弾性体を圧縮した後、その一方の端面からドリル
を、回転させつつ圧縮方向に挿入することにより穿孔
し、その後、ドリルを弾性体から引き抜いて、弾性体を
元の長さに復帰させる。According to the present invention, the above-mentioned problem is solved as follows. (1) After compressing the elastic body, drill the hole from one end face by inserting the drill in the compression direction while rotating, then pull out the drill from the elastic body and return the elastic body to its original length Let it.
【0012】(2) 上記(1)項において、先端角が約6
0度のドリルを用いて、弾性体に穿孔する。(2) In the above item (1), the tip angle is about 6
Drill the elastic body using a 0 degree drill.
【0013】(3) 上記(1)項または(2)項において、
筒状枠体の内部に、前記枠体の断面形状とほぼ同じ断面
形状を有する弾性体を詰め込み、かつ筒状枠体の一方の
開口端部より、押圧部材を嵌入して、弾性体を圧縮し、
かつ筒状枠体の他端を貫通させて、ドリルを弾性体内に
挿入する。(3) In the above item (1) or (2),
An elastic body having substantially the same cross-sectional shape as the cross-sectional shape of the frame body is packed inside the cylindrical frame body, and a pressing member is inserted from one open end of the cylindrical frame body to compress the elastic body. And
The drill is inserted into the elastic body through the other end of the cylindrical frame.
【0014】(4) 上記(3)項において、中空箱状の枠
体の断面形状を非円形とする。(4) In the above item (3), the cross section of the hollow box-shaped frame is made non-circular.
【0015】(5) 上記(3)項または(4)項において、
ほぼ水平の板上に押圧部材を載置し、内部に弾性体を詰
め込んだ筒状枠体を、その開口端部が下方を向くように
して、前記押圧部材に上方より被せた後、前記筒状枠体
を押し下げることにより、弾性体を圧縮させる。(5) In the above item (3) or (4),
A pressing member is placed on a substantially horizontal plate, and a cylindrical frame filled with an elastic body is placed on the pressing member from above so that an opening end thereof faces downward. The elastic body is compressed by pushing down the frame.
【0016】(6) 上記(5)項において、昇降自在な押
圧手段により、筒状枠体を押し下げ、その押圧状態を維
持したまま、穿孔作業を行なう。(6) In the above item (5), the cylindrical frame body is pushed down by a vertically movable pressing means, and the boring operation is performed while maintaining the pressed state.
【0017】[0017]
【発明の実施の形態】以下、本発明の一実施形態を添付
図面を参照しながら説明する。An embodiment of the present invention will be described below with reference to the accompanying drawings.
【0018】図1に示す弾性体(W)は、複写機の給紙ロ
ーラやトナー供給用ローラ等として用いられる弾性ロー
ラの原材料となるもので、角柱状のウレタン樹脂等の弾
性発泡体からなっている。この弾性体(W)を、以下に説
明する装置及び器具を用いて作業することによって、後
述する弾性ローラ(R)が完成される。The elastic body (W) shown in FIG. 1 is a raw material of an elastic roller used as a paper feed roller or a toner supply roller of a copying machine, and is made of an elastic foam such as a prismatic urethane resin. ing. The elastic roller (R) described later is completed by working this elastic body (W) using an apparatus and equipment described below.
【0019】図2及び図3に示す工作機械(その全体構
造は図示略)(1)の一部をなす、ほぼ水平の作業板(2)
の上面には、断面形状が弾性体(W)のそれとほぼ同一で
ある角筒状の押圧部材(3)が立設されており、図3に示
すように、押圧部材(3)の上端面を閉塞する上壁(3a)の
中央には、後述するドリル(5)の先端部が進入しうるよ
うにした逃し孔(4)が設けられている。(3b)は、押圧部
材(3)の下端を外向き水平に折曲し、作業板(2)の上面
に固定する取付片である。A substantially horizontal work plate (2) which forms part of the machine tool (1) of the machine tool shown in FIGS.
A pressing member (3) in the shape of a rectangular tube having a cross section substantially the same as that of the elastic body (W) is provided upright on the upper surface of the pressing member (3). As shown in FIG. At the center of the upper wall (3a) that closes the hole, there is provided a relief hole (4) through which the tip of a drill (5) described later can enter. (3b) is a mounting piece that bends the lower end of the pressing member (3) outward and horizontally and fixes it to the upper surface of the work plate (2).
【0020】工作機械(1)の作業板(2)の上方には、図
示を省略した昇降装置によって上下方向に移動するドリ
ル(5)と、左右1対の流体圧シリンダ(全体構造は図示
略)より下向きに延出する1対のピストンロッド(6)の
下端に、ほぼ水平をなすように支持され、中央部にドリ
ル(5)を通すための通孔(7)が穿設された押圧板(8)と
が配設されている。Above the work plate (2) of the machine tool (1), a drill (5) that moves vertically by a lifting device (not shown) and a pair of left and right fluid pressure cylinders (the overall structure is not shown in the drawing) ) A pair of piston rods (6) extending downward from the lower end of the pair of piston rods (6) is supported so as to be substantially horizontal, and has a through hole (7) for passing a drill (5) in the center. A plate (8) is provided.
【0021】ドリル(5)と押圧板(8)は、常時は押圧部
材(3)のかなり上方に位置しており(図2の状態)、昇降
装置及び流体圧シリンダを下向きに作動させることによ
り、作業板(2)の近傍まで下降する(図3の状態)。The drill (5) and the pressing plate (8) are always located considerably above the pressing member (3) (the state shown in FIG. 2), and the lifting device and the fluid pressure cylinder are operated downward to operate. Then, it descends to the vicinity of the work plate (2) (state of FIG. 3).
【0022】(9)は、前部及び底部が開口するととも
に、上面に通孔(10)が穿設された中空の箱体(11)の前部
に、箱体(11)の前部を閉塞する前板(12)を上下2個の蝶
番(13)をもって枢着した枠体であり、前板(12)の左側縁
部における上下方向の中央部には、前板(12)を閉塞した
際に、前板(12)を箱体(11)に固定する固定金具(14)が取
り付けられている。この枠体(9)の内部の断面形状は押
圧部材(3)及び弾性体(W)のそれとほぼ同一であり、か
つ、その上下寸法は弾性体(W)の長さとほぼ同一となっ
ている。また、上述した押圧部材(3)の上下寸法は、枠
体(9)の上下寸法の約2/3となっている。(9) The front part and the bottom part are open, and the front part of the box body (11) is attached to the front part of a hollow box body (11) having a through hole (10) formed in the upper surface. It is a frame body in which the front plate (12) to be closed is pivotally connected with two upper and lower hinges (13), and the front plate (12) is closed at the center of the left edge of the front plate (12) in the vertical direction. At this time, a fixture (14) for fixing the front plate (12) to the box (11) is attached. The cross-sectional shape of the inside of the frame (9) is substantially the same as that of the pressing member (3) and the elastic body (W), and the vertical dimension thereof is substantially the same as the length of the elastic body (W). . The vertical dimension of the pressing member (3) is about / of the vertical dimension of the frame (9).
【0023】ドリル(5)は、超硬質合金からなるいわゆ
るツイストドリルであって、その上端部が、昇降装置の
下端部に設けられたチャック(15)に着脱自在に取り付け
られるものであり、図4に示すように、その先端角(α)
は約60度に成形されている。また、先端の切刃(5a)か
ら上端部まで設けられたねじれ溝(5b)の縁部には刃部(5
c)が形成されている。The drill (5) is a so-called twist drill made of a super-hard alloy, the upper end of which is detachably attached to a chuck (15) provided at the lower end of an elevating device. As shown in Fig. 4, the tip angle (α)
Is formed at about 60 degrees. The edge of the torsion groove (5b) provided from the cutting edge (5a) at the tip to the upper end portion has a blade (5
c) is formed.
【0024】次に、上述した装置および器具を用いて、
弾性体(W)から弾性ローラ(R)を製造する要領を説明す
る。Next, using the above-described apparatus and equipment,
The procedure for manufacturing the elastic roller (R) from the elastic body (W) will be described.
【0025】まず、枠体(9)の前板(12)を開き、弾性体
(W)を枠体(9)の内部に詰め込み、前板(12)を閉じた
後、固定金具(14)により前板(12)を箱体(11)にしっかり
と固定する(図2参照)。次いで、図3に示すように、枠
体(9)を押圧部材(3)の上面に被せ、流体圧シリンダの
ピストンロッド(6)を下方に伸長させて、押圧板(8)を
枠体(9)の上面に圧接し、枠体(9)の下面が作業板(2)
に当接するまで、ピストンロッド(6)を伸長させ、枠体
(9)の下面が作業板(2)(本実施形態においては、押圧
部材(3)の取付片(3a))に当接する下限位置に到達した
時点で、ピストンロッド(6)の伸長動作を停止し、枠体
(9)を押し下げたままの状態を維持する。First, the front plate (12) of the frame (9) is opened, and the elastic body
(W) is packed in the frame body (9), and the front plate (12) is closed, and then the front plate (12) is firmly fixed to the box body (11) by the fixing bracket (14) (see FIG. 2). ). Next, as shown in FIG. 3, the frame (9) is put on the upper surface of the pressing member (3), the piston rod (6) of the fluid pressure cylinder is extended downward, and the pressing plate (8) is attached to the frame ( 9) is pressed against the upper surface, and the lower surface of the frame (9) is
The piston rod (6) is extended until it comes into contact with
When the lower surface of (9) reaches the lower limit position where it contacts the work plate (2) (in this embodiment, the mounting piece (3a) of the pressing member (3)), the extension operation of the piston rod (6) is started. Stop and frame
Maintain the state where (9) is pressed down.
【0026】図3に示すように、枠体(9)が下限位置に
到達したとき、枠体(9)の内部に詰められていた弾性体
(W)は、その長さが元の長さの約1/3に圧縮され、元
の状態に比べてかなり硬質の状態となる。As shown in FIG. 3, when the frame (9) reaches the lower limit position, the elastic body packed inside the frame (9)
(W) has its length compressed to about 1/3 of its original length, and is considerably harder than its original state.
【0027】その後、昇降装置を作動することにより、
ドリル(5)を回転させながら下降させて、押圧板(7)と
箱体(11)の通孔(7)(10)を通して、ドリル(5)の切刃(5
a)を圧縮された弾性体(W)の上面に押し当て、ドリル
(5)をそのまま弾性体(W)の内部に挿入する。ドリル
(5)は、その切刃(5a)が弾性体(W)の内部を研削すると
ともに、それにいよって形成された孔の内面を、ねじれ
溝(5b)の縁部の刃部(5c)が更に研削しつつ、弾性体(W)
の内部を下方に進む。切刃(5a)が弾性体(W)の下面を貫
通して押圧部材(3)の逃し孔(4)にまで達したら、昇降
装置を一旦停止し、その後昇降装置によりドリル(5)を
上方に引き上げて、ドリル(5)を弾性体(W)から完全に
引き抜く。ドリル(5)が引き抜かれた弾性体(W)の内部
には、弾性体(W)を上下方向に貫通する円形の貫通孔(1
6)が形成される。Then, by operating the lifting device,
The drill (5) is lowered while rotating, and the cutting edge (5) of the drill (5) is passed through the pressing plate (7) and the through holes (7) (10) of the box (11).
a) is pressed against the upper surface of the compressed elastic body (W) and drill
(5) is directly inserted into the elastic body (W). Drill
In (5), the cutting edge (5a) grinds the inside of the elastic body (W), and the inner surface of the hole formed by the cutting edge (5a) is cut by the blade (5c) at the edge of the torsion groove (5b). Elastic body (W) while further grinding
Go down the inside of. When the cutting blade (5a) penetrates the lower surface of the elastic body (W) and reaches the relief hole (4) of the pressing member (3), the lifting device is temporarily stopped, and then the drill (5) is moved upward by the lifting device. And the drill (5) is completely pulled out of the elastic body (W). Inside the elastic body (W) from which the drill (5) is pulled out, a circular through hole (1) penetrating the elastic body (W) in the vertical direction is provided.
6) is formed.
【0028】この後、ピストンロッド(6)を短縮させて
(上方に引き上げて)、押圧板(8)を元の位置まで上昇復
帰させると、圧縮されていた弾性体(W)の復帰力によ
り、枠体(9)が押圧部材(3)に対して上昇する。この
後、作業者が枠体(9)を押圧部材(3)から完全に抜き取
り、弾性体(W)を枠体(9)の内部から抜き出すと、弾性
体(W)は自身の弾性復帰力により図5に示す状態とな
る。Thereafter, the piston rod (6) is shortened.
When the pressing plate (8) is lifted and returned to the original position (pulled up), the frame (9) is pressed against the pressing member (3) by the returning force of the compressed elastic body (W). To rise. Thereafter, when the operator completely removes the frame (9) from the pressing member (3) and pulls out the elastic body (W) from the inside of the frame (9), the elastic body (W) exerts its own elastic restoring force. As a result, the state shown in FIG. 5 is obtained.
【0029】このようにして、中心部に貫通孔(16)が穿
設された弾性体(W)は、貫通孔(16)に金属製のシャフト
(S)が嵌合され、次いで、図示を省略した砥石等により
その表面が削られて、図6に示すような円柱状の弾性ロ
ーラ(R)が完成する。As described above, the elastic body (W) having the through hole (16) formed at the center thereof is provided with the metal shaft through the through hole (16).
(S) is fitted, and then its surface is shaved by a grindstone or the like (not shown) to complete a cylindrical elastic roller (R) as shown in FIG.
【0030】以上説明した本実施形態のように、ドリル
(5)により弾性ローラ(R)用の弾性体(W)に貫通孔(16)
の穴開け作業を施すと、ドリル(5)は強度的に強いの
で、相当数繰り返して使用しても、ドリル(5)に変形が
生じることはなく、ドリル(5)の寿命はかなり長いもの
となる。As in the present embodiment described above, the drill
Through hole (16) in elastic body (W) for elastic roller (R) by (5)
When drilling, the drill (5) is strong in terms of strength, so even if it is used repeatedly, the drill (5) does not deform, and the life of the drill (5) is considerably long Becomes
【0031】また、ドリル(5)は強度的に強いので、弾
性体(W)の内部を研削している最中にぶれることがな
く、弾性体(W)の内部を真直ぐに進むことができ(特に
本実施形態のドリル(5)は、その先端角が約60度と鋭
角であるため、弾性体(W)の内部を前後及び上下方向に
ぶれることなく、真直ぐに進むことができる。なお、先
端角は60度〜90度の範囲内であれば、60度の場合
とほぼ同様の直進性が得られる。)、かつ、ドリル(5)
が弾性体(W)の内部を研削する際に、弾性体(W)の内部
におけるドリル(5)と接する部分がドリル(5)に巻き込
まれて、内部でねじれを起こすことがないので、完成し
た貫通孔(16)は真直ぐなものとなり、その断面形状は長
手方向のいずれの位置においても、等しい形状となる。
従って、貫通孔(16)にシャフト(S)を嵌合して弾性ロー
ラ(R)をシャフト(S)の軸線回りに回転させると、弾性
ローラ(R)は偏心することなく回転し、紙やトナー(い
ずれも図示略)を安定した状態で送ることができる。Further, since the drill (5) is strong in strength, the drill (5) does not shake while grinding the inside of the elastic body (W), and can proceed straight inside the elastic body (W). (Especially, since the tip angle of the drill (5) of the present embodiment is an acute angle of about 60 degrees, the drill (5) can move straight inside the elastic body (W) without moving back and forth and up and down. If the tip angle is in the range of 60 to 90 degrees, almost the same straightness as in the case of 60 degrees can be obtained.)
When grinding the inside of the elastic body (W), the part in contact with the drill (5) inside the elastic body (W) is caught in the drill (5) and does not twist inside, so it is completed. The through hole (16) thus formed is straight, and its cross-sectional shape is the same at any position in the longitudinal direction.
Accordingly, when the shaft (S) is fitted into the through hole (16) and the elastic roller (R) is rotated around the axis of the shaft (S), the elastic roller (R) rotates without eccentricity, and the paper or the like is rotated. The toner (both not shown) can be fed in a stable state.
【0032】また、切刃(5a)によって研削された貫通孔
(16)の内面は、ドリル(5)のねじれ溝(5b)の刃部(5c)に
よって更に研削されるので、摺動潤滑剤をドリル(5)に
塗布しなくても、貫通孔(16)の内面を美麗に仕上げるこ
とができる。なお、ドリル(5)のねじれ角を45°以上
とすれば、貫通孔(16)の内面仕上げ効果を更に向上させ
ることができる。Also, a through hole ground by the cutting blade (5a)
Since the inner surface of (16) is further ground by the cutting edge (5c) of the twist groove (5b) of the drill (5), the through-hole (16) can be used without applying the sliding lubricant to the drill (5). The inner surface of) can be beautifully finished. If the twist angle of the drill (5) is 45 ° or more, the effect of finishing the inner surface of the through hole (16) can be further improved.
【0033】また、本実施形態ではドリル(5)を超硬質
合金材からなるものとしたが、HSS材により成形し、
かつその表面に窒化チタン等をコーテイングしたものと
してもよい。In this embodiment, the drill (5) is made of a super-hard alloy material.
The surface may be coated with titanium nitride or the like.
【0034】[0034]
【発明の効果】(A) 請求項1記載の発明によると、ド
リルは強度的に強いので、相当回数繰り返して使用して
も、ドリルに変形が生じることはなく、ドリルの寿命は
長いものとなる。(A) According to the first aspect of the present invention, since the drill is strong in strength, the drill does not deform even when used repeatedly for a considerable number of times, and the life of the drill is long. Become.
【0035】また、ドリルは、弾性体の内部を研削中に
弾性体の内部においてぶれることがなく、弾性体の内部
を真直ぐに進むので、弾性体に真直ぐな貫通孔を成形す
ることができ、かつ、ドリルが弾性体の内部を研削する
際に、弾性体の内部におけるドリルと接する部分がドリ
ルに巻き込まれて、内部でねじれを起こすことがないの
で、完成した貫通孔の断面形状は、その長手方向のいず
れの位置においても同じ形状となる。また、ドリルは強
度的に強いので、弾性体の内部を研削している最中にぶ
れることがなく、弾性体の内部を真直ぐに進むことがで
き、かつ、ドリルが弾性体の内部を研削する際に、弾性
体の内部におけるドリルと接する部分がドリルに巻き込
まれて、内部でねじれを起こすことがないので、完成し
た貫通孔は真直ぐなものとなり、その断面形状は長手方
向のいずれの位置においても等しい形状となる。このた
め、貫通孔にシャフトを嵌合して弾性ローラをシャフト
の軸線回りに回転させると、弾性ローラは偏心すること
なく回転し、紙やトナーを安定した状態で送ることがで
きる。Further, since the drill does not shake during the grinding of the inside of the elastic body and proceeds straight inside the elastic body, it is possible to form a straight through hole in the elastic body. Also, when the drill grinds the inside of the elastic body, the part in contact with the drill inside the elastic body is caught in the drill and does not cause twisting inside, so the cross-sectional shape of the completed through hole is The shape is the same at any position in the longitudinal direction. Also, since the drill is strong in strength, it does not shake while grinding the inside of the elastic body, it can go straight inside the elastic body, and the drill grinds the inside of the elastic body At that time, the part in contact with the drill inside the elastic body is not caught in the drill and does not cause twisting inside, so the completed through hole is straight, and its cross-sectional shape is at any position in the longitudinal direction Also have the same shape. For this reason, when the shaft is fitted into the through hole and the elastic roller is rotated around the axis of the shaft, the elastic roller rotates without eccentricity and can feed paper and toner in a stable state.
【0036】また、ドリルの切刃によって成形された貫
通孔の内面は、ドリルのねじれ溝の刃部によって更に研
削されるので、摺動潤滑剤をドリルに塗布しなくても、
貫通孔の内面を美麗に仕上げることができる。Further, since the inner surface of the through hole formed by the cutting edge of the drill is further ground by the blade portion of the twist groove of the drill, even if the sliding lubricant is not applied to the drill,
The inner surface of the through hole can be beautifully finished.
【0037】(B) 請求項2記載の発明によると、ドリ
ルの先端角が約60度と鋭角であるため、ドリルは比較
的柔らかい材料である弾性体の内部をぶれることなく、
真直ぐに進むことができ、出来上がった貫通孔をさらに
真直ぐなものとすることができる。(B) According to the second aspect of the present invention, since the tip angle of the drill is an acute angle of about 60 degrees, the drill does not shake inside the elastic body which is a relatively soft material.
It can proceed straight, and the resulting through-hole can be further straightened.
【0038】(C) 請求項3記載の発明によると、弾性
体を、弾性体と同じ断面形状を有する枠体の内部に圧縮
した状態で詰めて、弾性体と枠体内部の接触面の圧力を
高めることにより、ドリルの回転によって弾性体自体が
回転してしまうのを防止することができる。(C) According to the third aspect of the present invention, the elastic body is packed in a compressed state inside a frame having the same cross-sectional shape as the elastic body, and the pressure of the contact surface between the elastic body and the inside of the frame is compressed. , The elastic body itself can be prevented from rotating due to the rotation of the drill.
【0039】(D) 請求項4記載の発明によると、ドリ
ルの回転により弾性体自体が回転してしまうのを、更に
確実に防止することができる。(D) According to the fourth aspect of the present invention, the rotation of the elastic body itself due to the rotation of the drill can be more reliably prevented.
【0040】(E) 請求項5記載の発明によると、簡単
かつ安価な装置により、弾性体を確実に圧縮することが
できる。(E) According to the fifth aspect of the present invention, the elastic body can be reliably compressed by a simple and inexpensive device.
【0041】(F) 請求項6記載の発明によると、押圧
手段を使用することにより、弾性体をより簡単に圧縮で
きるとともに、弾性体を圧縮した状態に確実に維持する
ことができるので、ドリルによる穿孔作業をより確実か
つ正確に行えるようになる。(F) According to the sixth aspect of the present invention, by using the pressing means, the elastic body can be more easily compressed, and the elastic body can be reliably maintained in the compressed state. Can be performed more reliably and accurately.
【図1】本発明の一実施形態の加工が施される前の状態
の弾性体の拡大斜視図である。FIG. 1 is an enlarged perspective view of an elastic body in a state before being processed according to an embodiment of the present invention.
【図2】同じく工作機械の要部と枠体を示す正面図であ
る。FIG. 2 is a front view showing a main part and a frame of the machine tool.
【図3】同じく枠体を押圧部材に被せて、弾性体にドリ
ル加工を施す状態を示す正面図である。FIG. 3 is a front view showing a state in which a frame is put on a pressing member and an elastic body is drilled.
【図4】同じくドリルの先端部の拡大図である。FIG. 4 is an enlarged view of a tip portion of the drill.
【図5】同じく穿孔が施された弾性体の拡大斜視図であ
る。FIG. 5 is an enlarged perspective view of the perforated elastic body.
【図6】同じく完成した弾性ローラにシャフトを嵌合し
た状態を示す拡大斜視図である。FIG. 6 is an enlarged perspective view showing a state where a shaft is fitted to the completed elastic roller.
(1)工作機械 (2)作業板(板) (3)押圧部材 (4)逃し孔 (5)ドリル (5a)切刃 (5b)ねじれ溝 (5c)刃部 (6)ピストンロッド(押圧手段) (7)通孔 (8)押圧板(押圧手段) (9)筒状枠体 (10)通孔 (11)箱体 (12)前板 (13)蝶番 (14)固定金具 (15)チャック (R)弾性ローラ (S)シャフト (W)弾性体 (α)ドリルの先端角 (1) machine tool (2) work plate (plate) (3) pressing member (4) relief hole (5) drill (5a) cutting blade (5b) twist groove (5c) blade portion (6) piston rod (pressing means (7) Through-hole (8) Pressing plate (pressing means) (9) Cylindrical frame (10) Through-hole (11) Box (12) Front plate (13) Hinge (14) Fixing bracket (15) Chuck (R) Elastic roller (S) Shaft (W) Elastic body (α) Tip angle of drill
Claims (6)
らドリルを、回転させつつ圧縮方向に挿入することによ
り穿孔し、その後、ドリルを弾性体から引き抜いて、弾
性体を元の長さに復帰させることを特徴とする弾性体に
対する穿孔方法。After the elastic body is compressed, a drill is drilled from one end face of the elastic body by inserting the drill in the compression direction while rotating, and thereafter, the drill is pulled out from the elastic body so that the elastic body has its original length. A method for piercing an elastic body, wherein
性体に穿孔することを特徴とする請求項1記載の弾性体
に対する穿孔方法。2. The method for piercing an elastic body according to claim 1, wherein the elastic body is pierced using a drill having a tip angle of about 60 degrees.
とほぼ同じ断面形状を有する弾性体を詰め込み、かつ筒
状枠体の一方の開口端部より、押圧部材を嵌入して、弾
性体を圧縮し、かつ筒状枠体の他端を貫通させて、ドリ
ルを弾性体内に挿入することを特徴とする請求項1また
は2記載の弾性体に対する穿孔方法。3. An elastic body having substantially the same cross-sectional shape as that of the frame body is packed in the inside of the cylindrical frame body, and a pressing member is fitted from one open end of the cylindrical frame body. The method according to claim 1 or 2, wherein the drill is inserted into the elastic body by compressing the elastic body and penetrating the other end of the cylindrical frame.
を特徴とする請求項3記載の弾性体に対する穿孔方法。4. The method according to claim 3, wherein the cylindrical frame has a non-circular cross-sectional shape.
部に弾性体を詰め込んだ筒状枠体を、その開口端部が下
方を向くようにして、前記押圧部材に上方より被せた
後、前記筒状枠体を押し下げることにより、弾性体を圧
縮させることを特徴とする請求項3または4記載の弾性
体に対する穿孔方法。5. A pressing member is placed on a substantially horizontal plate, and a cylindrical frame filled with an elastic body is placed on the pressing member from above with its open end facing downward. 5. The method according to claim 3, wherein the elastic body is compressed by pushing down the cylindrical frame after the compression.
押し下げ、その押圧状態を維持したまま、穿孔作業を行
なうことを特徴とする請求項5記載の弾性体に対する穿
孔方法。6. The method for piercing an elastic body according to claim 5, wherein the cylindrical frame body is pressed down by a vertically movable pressing means, and the piercing operation is performed while maintaining the pressed state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11195908A JP2001018197A (en) | 1999-07-09 | 1999-07-09 | Boring method for elastic body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11195908A JP2001018197A (en) | 1999-07-09 | 1999-07-09 | Boring method for elastic body |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001018197A true JP2001018197A (en) | 2001-01-23 |
Family
ID=16348996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11195908A Pending JP2001018197A (en) | 1999-07-09 | 1999-07-09 | Boring method for elastic body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001018197A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008055568A (en) * | 2006-08-31 | 2008-03-13 | Inoac Corp | Housing tool of elastic foam for use in compression/punching device |
JP2008055567A (en) * | 2006-08-31 | 2008-03-13 | Inoac Corp | Punching method of elastic foam and its device |
JP2008093794A (en) * | 2006-10-12 | 2008-04-24 | Asahi Rubber:Kk | Slit machining method of rubber molded body, and device thereof |
JP2008132563A (en) * | 2006-11-28 | 2008-06-12 | Inoac Corp | Drilling method and its device for elastic foaming body |
-
1999
- 1999-07-09 JP JP11195908A patent/JP2001018197A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008055568A (en) * | 2006-08-31 | 2008-03-13 | Inoac Corp | Housing tool of elastic foam for use in compression/punching device |
JP2008055567A (en) * | 2006-08-31 | 2008-03-13 | Inoac Corp | Punching method of elastic foam and its device |
JP2008093794A (en) * | 2006-10-12 | 2008-04-24 | Asahi Rubber:Kk | Slit machining method of rubber molded body, and device thereof |
JP2008132563A (en) * | 2006-11-28 | 2008-06-12 | Inoac Corp | Drilling method and its device for elastic foaming body |
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