JP2002160125A - Throw-away type reamer - Google Patents

Throw-away type reamer

Info

Publication number
JP2002160125A
JP2002160125A JP2000357673A JP2000357673A JP2002160125A JP 2002160125 A JP2002160125 A JP 2002160125A JP 2000357673 A JP2000357673 A JP 2000357673A JP 2000357673 A JP2000357673 A JP 2000357673A JP 2002160125 A JP2002160125 A JP 2002160125A
Authority
JP
Japan
Prior art keywords
tool
tip
screw
screw hole
axis
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
Application number
JP2000357673A
Other languages
Japanese (ja)
Other versions
JP3968988B2 (en
Inventor
Masaharu Takiguchi
正治 滝口
Tomoji Otsuka
友司 大塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP2000357673A priority Critical patent/JP3968988B2/en
Publication of JP2002160125A publication Critical patent/JP2002160125A/en
Application granted granted Critical
Publication of JP3968988B2 publication Critical patent/JP3968988B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Abstract

PROBLEM TO BE SOLVED: To easily and accurately adjust a position of a tip. SOLUTION: A pressed surface 42 substantially orthogonal to the axial line of a tool body 32 is formed on the tool base end side of a tip 34 mounted on a tip mounting seat 33 of the tool body 32. A first screw hole 46 substantially parallel with the axial line of the tool body 32 is formed adjacently to the tool base end side of the tip mounting seat 33. A screw 47 for adjusting a position in the axial line direction is screwed into the first screw hole 46 movably in the axial line direction. A pressing surface 48 substantially orthogonal to the axial line and for pressing the pressed surface 42 of the tip 34 is formed the end surface on the tool tip side of the adjusting screw 47. The tool body 32 is provided with an opening hole 50 that is opened on the tool outer peripheral side adjacently to the tool base end side of the first screw hole 46 and exposes the end on the tool base end side of the first screw hole 46 to the outside.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ワークに形成され
た下穴を所定の内径に仕上げ加工するためのリーマ、特
にスローアウェイ式リーマ(以下、単にリーマと称す
る)に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reamer for finishing a prepared hole formed in a workpiece to a predetermined inner diameter, and more particularly to a throw-away reamer (hereinafter, simply referred to as a reamer).

【0002】[0002]

【従来の技術】この種のリーマの一例を図4に示す。図
4において、(a)は、従来のリーマの形状を示す側面
図、(b)は(a)に示すリーマを矢印A方向から示す
側面図、(b)は(a)におけるB−B矢視断面図であ
る。このリーマ1は、軸線Oを中心とする外径略円柱形
状をなす工具本体2の先端部にチップ取付座3が形成さ
れ、このチップ取付座3に、例えば超硬合金からなるス
ローアウェイチップ4(以下、単にチップと称する)が
クランプネジ5によって着脱可能にして取り付けられた
ものである。このチップ4の切刃6は、工具本体2の外
周面よりも外周側に突出するように配設されており、こ
のリーマ1には、チップ4の切刃6の工具外周側への突
出量を微調整するための径方向位置調整機構7が設けら
れている。
2. Description of the Related Art An example of this kind of reamer is shown in FIG. 4, (a) is a side view showing the shape of a conventional reamer, (b) is a side view showing the reamer shown in (a) from the direction of arrow A, and (b) is a BB arrow in (a). FIG. In the reamer 1, a tip mounting seat 3 is formed at a tip end of a tool body 2 having a substantially cylindrical shape with an outer diameter centered on an axis O. The tip mounting seat 3 is provided with a throw-away tip 4 made of, for example, a cemented carbide. (Hereinafter, simply referred to as a chip) is detachably attached by a clamp screw 5. The cutting edge 6 of the tip 4 is disposed so as to protrude to the outer peripheral side from the outer peripheral surface of the tool body 2, and the reamer 1 has an amount of protrusion of the cutting edge 6 of the tip 4 toward the outer peripheral side of the tool. Is provided with a radial position adjusting mechanism 7 for finely adjusting the position.

【0003】さらに、工具本体2の外周には、その外周
面から突出して軸線Oに略平行に延びる複数のパッド1
1が取り付けられている。このパッド11は、工具本体
2の外周に形成された凹溝12にろう付け等によって取
り付けられるものであって、工具本体2の先端部におい
てはチップ取付座3や径方向位置調整機構7を避け、か
つ周方向に間隔を開けて、しかも工具本体2の略全長に
わたるように設けられている。ここで、これらのパッド
11は、一般的に工具本体2や加工物、あるいは後述す
るブッシュよりも硬質な例えば超硬合金等により形成さ
れるものであって、その外周面は軸線Oを中心とした円
筒面形状とされ、かつその外径は切刃6の外径よりもご
くわずかに小さくされている。
Further, a plurality of pads 1 protruding from the outer peripheral surface of the tool body 2 and extending substantially parallel to the axis O are provided on the outer periphery of the tool body 2.
1 is attached. The pad 11 is attached to a concave groove 12 formed on the outer periphery of the tool main body 2 by brazing or the like. At the tip of the tool main body 2, the tip mounting seat 3 and the radial position adjusting mechanism 7 are avoided. The tool body 2 is provided at intervals in the circumferential direction and extends over substantially the entire length of the tool body 2. Here, these pads 11 are generally formed of, for example, a cemented carbide or the like, which is harder than the tool body 2 or the workpiece, or a bush described later, and its outer peripheral surface is centered on the axis O. The outer diameter of the cutting edge 6 is slightly smaller than the outer diameter of the cutting edge 6.

【0004】このように構成されたリーマ1は、その後
端部が工作機械の主軸に支持されて軸線Oまわりに工具
回転方向Tに回転されるとともに、軸線O方向先端側に
送り出されて、加工物に形成された上記下穴に挿入さ
れ、その上記切刃6によってこの下穴を所定の内径に仕
上げ加工してゆく。また、このとき上記パッド11は、
上記下穴の開口部に臨んで配置されたブッシュの内周
や、あるいは上記切刃6によって仕上げられた下穴自体
の内周面に、工具本体2の送りに伴い摺接することによ
り、工具本体2を軸線Oに沿って真っ直ぐに案内するの
に供される。
[0004] The reamer 1 constructed as described above has its rear end supported by the main shaft of the machine tool and rotated about the axis O in the tool rotation direction T, and is also sent out to the tip side in the direction of the axis O for machining. The prepared hole is inserted into the prepared hole formed in the object, and the prepared cutting hole 6 finishes the prepared hole to a predetermined inner diameter. At this time, the pad 11
The tool body is brought into sliding contact with the inner periphery of the bush arranged facing the opening of the prepared hole or the inner peripheral surface of the prepared hole itself finished by the cutting blade 6 as the tool body 2 is fed. 2 to guide it straight along the axis O.

【0005】ここで、図5に、チップ4の切刃6と工具
本体の先端に設けられるパッド11の先端の回転軌跡を
示す。工具本体2の先端に設けられたパッド11は、チ
ップ4の切刃6によって仕上げられた下穴自体の内周面
と摺接される。しかし、パッド11の先端が切刃6と同
一かそれよりも工具先端側に突出していると、下穴にお
いてまだ仕上げ加工されていない部分にパッド11が当
たることになってしまう。また、このパッド11の先端
が切刃6よりも工具基端側に行き過ぎていると、工具本
体2において、パッド11を介して下穴の内周面に支持
される位置からの切刃6の突出量が大きくなって工具本
体2に振動が生じやすくなり、加工精度が低下してしま
う。このことから、チップ4は、図5に示されるよう
に、工具本体2の先端に設けられるパッド11よりもご
くわずかに、具体的には0.1mm程度、工具先端側に
突出させて設けられる(この突出量Fをアドバンス量と
いう)。
Here, FIG. 5 shows the rotation locus of the cutting edge 6 of the tip 4 and the tip of the pad 11 provided at the tip of the tool body. The pad 11 provided at the tip of the tool body 2 is in sliding contact with the inner peripheral surface of the prepared hole itself finished by the cutting blade 6 of the tip 4. However, if the tip of the pad 11 is the same as the cutting edge 6 or protrudes further toward the tool tip, the pad 11 will hit a portion of the pilot hole that has not been finished yet. If the tip of the pad 11 is too far from the cutting edge 6 toward the tool base end, the cutting edge 6 of the tool main body 2 is moved from the position supported by the inner peripheral surface of the prepared hole via the pad 11. The protruding amount becomes large, so that vibration is easily generated in the tool main body 2, and the machining accuracy is reduced. For this reason, as shown in FIG. 5, the tip 4 is provided so as to protrude slightly slightly, specifically, about 0.1 mm toward the tool tip side from the pad 11 provided at the tip end of the tool body 2. (This protrusion amount F is referred to as an advance amount).

【0006】このように、チップ4の切刃6の軸線方向
への突出量を微調整するため、リーマ1には、軸線方向
位置調整機構16が設けられている。軸線方向位置調整
機構16は、工具本体2において、チップ取付座3の工
具回転方向Tの後方側の外周面からチップ取付座3の工
具基端側まで通じるネジ孔17と、このネジ孔17に螺
合される調整ネジ18とを有している。調整ネジ18
は、チップ取付座3側の端部が先端側に向かうに従って
縮径された略円錐台形状に形成されており、この部分
は、チップ取付座3に着座するチップ4の工具基端側を
押圧する押圧部19とされている。また、チップ4の工
具基端側を向く面は、チップ取付座3に着座する下面側
からこの下面に対向する上面側に向かうに従って工具基
端側に突出する傾斜面21とされており、この傾斜面2
1によって調整ネジ18の押圧部19を受けるようにな
っている。この軸線方向位置調整機構16は、調整ネジ
18を操作して、押圧部19が形成される端部をチップ
取付座3側に移動させることで、押圧部19によってチ
ップ4の傾斜面21を押圧し、チップ4を工具先端側に
押圧して移動させるものである。
As described above, the reamer 1 is provided with the axial position adjusting mechanism 16 in order to finely adjust the amount by which the cutting edge 6 of the tip 4 projects in the axial direction. The axial position adjusting mechanism 16 includes a screw hole 17 extending from the outer peripheral surface of the tip mounting seat 3 on the rear side in the tool rotation direction T to the tool base end of the tip mounting seat 3 in the tool body 2. And an adjusting screw 18 to be screwed. Adjustment screw 18
Is formed in a substantially frustoconical shape in which the end on the tip mounting seat 3 side is reduced in diameter toward the distal end side, and this portion presses the tool base end side of the tip 4 seated on the tip mounting seat 3. The pressing portion 19 is formed. The surface of the tip 4 facing the tool base end side is an inclined surface 21 projecting toward the tool base end side from the lower surface side seated on the chip mounting seat 3 toward the upper surface side facing the lower surface. Slope 2
1 receives the pressing portion 19 of the adjusting screw 18. The axial position adjusting mechanism 16 presses the inclined surface 21 of the chip 4 by the pressing portion 19 by operating the adjusting screw 18 to move the end on which the pressing portion 19 is formed to the chip mounting seat 3 side. Then, the tip 4 is moved by pressing the tip 4 toward the tool tip.

【0007】[0007]

【発明が解決しようとする課題】しかし、このように構
成される軸線方向位置調整機構16においては、調整ネ
ジ18とチップ4は押圧部19と傾斜面21とで線接触
しているだけなので、調整ネジ18によるチップ4の支
持が不安定で、正確な位置調整作業が困難であった。さ
らに、工具本体2の強度を確保するために、ネジ孔17
は工具本体2においてより肉厚の厚い内周側に形成する
必要があるので、ネジ孔17に螺合される調整ネジ18
は、クランプネジ5によって工具本体2に固定されるチ
ップ4のうち、工具内周側の部分を押圧することにな
る。この場合には、チップ4はクランプネジ5を中心に
して回転しやすい上、チップ4は、クランプネジ5を中
心として切刃6を外周側に移動させる向きの回転力を調
整ネジ18から受けることになるので、切刃6の工具外
周側の突出量を調整した後に切刃6の軸線方向の位置を
調整した場合には、切刃6の工具外周側への突出量まで
ずれてしまいやすかった。また、切刃6の軸線方向の位
置調整を行ってから切刃6の工具外周側への突出量を調
整する場合にも、上記のように調整ネジ18によるチッ
プ4の支持が不安定であるため、切刃6の位置調整を正
確に行うことは困難であった。
However, in the axial position adjusting mechanism 16 configured as described above, since the adjusting screw 18 and the tip 4 are only in line contact with the pressing portion 19 and the inclined surface 21, The support of the chip 4 by the adjustment screw 18 was unstable, and it was difficult to perform an accurate position adjustment operation. Further, in order to secure the strength of the tool body 2, the screw holes 17
Need to be formed on the inner peripheral side of the tool body 2 where the thickness is larger, the adjusting screw 18 screwed into the screw hole 17 is required.
Presses the part on the tool inner peripheral side of the chip 4 fixed to the tool main body 2 by the clamp screw 5. In this case, the tip 4 is easily rotated around the clamp screw 5 and the tip 4 receives from the adjustment screw 18 a rotational force for moving the cutting blade 6 toward the outer peripheral side around the clamp screw 5. Therefore, if the position of the cutting edge 6 in the axial direction is adjusted after adjusting the amount of projection of the cutting edge 6 on the outer peripheral side of the tool, the amount of projection of the cutting edge 6 toward the outer peripheral side of the tool is easily shifted. . Also, when adjusting the position of the cutting blade 6 in the axial direction and then adjusting the amount of projection of the cutting blade 6 toward the outer periphery of the tool, the support of the tip 4 by the adjustment screw 18 is unstable as described above. Therefore, it has been difficult to accurately adjust the position of the cutting blade 6.

【0008】この発明は、上記事情に鑑みてなされたも
ので、チップの位置調整を容易かつ正確に行うことがで
きるリーマを提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a reamer that can easily and accurately adjust the position of a chip.

【0009】[0009]

【課題を解決するための手段】上記目的を達成するた
め、本発明のリーマは、軸線回りに回転される略円柱形
状の工具本体の先端部に、切刃を前記工具本体の外周側
に突出させてチップが設けられるリーマであって、チッ
プの工具基端側には、軸線に略直交する被押圧面が形成
され、工具本体には、チップの工具基端側に隣接して、
軸線に略平行にして設けられるネジ孔と、ネジ孔に、軸
線方向に移動可能にして螺合されるとともに、工具先端
側の端面が軸線に略直交し、チップの被押圧面を押圧す
る押圧面とされる軸線方向位置調整ネジと、ネジ孔の工
具基端側に隣接して工具外周側に開口されて、ネジ孔の
工具基端側の端部を外部に露出させる操作口とを有して
いることを特徴としている。
In order to achieve the above object, a reamer of the present invention has a cutting edge protruding from a tip of a substantially cylindrical tool body rotated about an axis to an outer peripheral side of the tool body. A reamer on which the tip is provided, wherein a pressed surface substantially orthogonal to the axis is formed on the tool base end side of the tip, and the tool body is adjacent to the tool base end side of the tip,
A screw hole provided substantially parallel to the axis, and a screw hole movably axially screwed into the screw hole, and a pressing end surface on the tip end side of the tool being substantially orthogonal to the axis line and pressing the pressed surface of the chip. An axial position adjusting screw, which is a surface, and an operation port which is open to the outer peripheral side of the tool adjacent to the tool base end side of the screw hole and exposes the end of the screw hole on the tool base end side to the outside. It is characterized by doing.

【0010】このように構成されるリーマにおいては、
チップの軸線方向の位置調整は、ネジ孔に螺着される軸
線方向位置調整ネジを、操作口を通じて操作して工具先
端側に移動させることで行われる。このようにして、軸
線方向位置調整ネジの押圧面によってチップの被押圧面
を軸線方向に押圧することで、チップが工具先端側に向
けて移動する。そして、チップの被押圧面と軸線方向位
置調整ネジの押圧面はともに工具本体の軸線に対して略
直交しており、これらは面接触するので、チップの支持
が安定し、位置決め精度が高められる。また、このよう
にチップの支持が安定することで、切刃の工具外周側へ
の突出量の調整も容易かつ正確に行うことができる。
[0010] In the reamer configured as described above,
Adjustment of the axial position of the tip is performed by operating an axial position adjusting screw screwed into the screw hole through the operation port to move the tip toward the tool tip. In this manner, by pressing the pressed surface of the chip in the axial direction with the pressing surface of the axial position adjusting screw, the chip moves toward the tool tip. The pressed surface of the chip and the pressing surface of the axial position adjusting screw are both substantially perpendicular to the axis of the tool body, and they are in surface contact, so that the support of the chip is stabilized and the positioning accuracy is improved. . In addition, since the support of the chip is stabilized, the amount of protrusion of the cutting blade toward the outer periphery of the tool can be easily and accurately adjusted.

【0011】さらに、ネジ孔が軸線に略平行に形成され
ており、工具本体の先端部の工具回転方向の肉厚を確保
することができるので、ネジ孔は、工具本体において径
方向の任意の位置に形成することができ、例えば、チッ
プの支持が安定しやすいように、ネジ孔を工具本体の外
周側に位置して形成することもできる。
Further, the screw hole is formed substantially parallel to the axis, and the thickness of the tip of the tool body in the tool rotation direction can be ensured. For example, the screw hole may be formed on the outer peripheral side of the tool body so that the support of the chip is easily stabilized.

【0012】[0012]

【発明の実施の形態】以下、本発明にかかるリーマの一
実施形態について、図1から図3を用いて説明する。図
1は本発明の一実施形態にかかるリーマの形状を示す図
であって、(a)は側面図、(b)は(a)に示すリー
マを矢印C方向から示す側面図、図2(a)は図1
(a)のD−D矢視断面図、図2(b)は図1(a)の
E−E矢視断面図、図3は本発明の一実施形態にかかる
リーマにおけるチップの位置調整の様子を示す側面図で
ある。ここで、以下では、従来のリーマ1と同様または
同一の部材については同じ符号を用いて示し、詳細な説
明を省く。本実施形態に示すリーマ31は、鋼材等によ
って構成される外径略円柱形状の工具本体32を有し、
工具本体32の先端部には、チップ取付座33が形成さ
れ、このチップ取付座33に、例えば超硬合金からなる
チップ34がクランプネジ5によって着脱可能にして取
り付けられたものである。そして、工具本体32の外周
には、複数のパッド11が取り付けられている。なお、
この工具本体32の先端には小径のパイロット40が設
けられるとともに、工具本体32の後端から先端側に向
けては軸線Oに沿って切削油剤等の供給孔32aが形成
されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a reamer according to the present invention will be described below with reference to FIGS. 1A and 1B are views showing the shape of a reamer according to an embodiment of the present invention, in which FIG. 1A is a side view, FIG. 1B is a side view showing the reamer shown in FIG. a) Fig. 1
2A is a cross-sectional view taken along the line DD, FIG. 2B is a cross-sectional view taken along the line EE in FIG. 1A, and FIG. 3 is a diagram illustrating a position adjustment of the chip in the reamer according to the embodiment of the present invention. It is a side view showing a situation. Here, the same or similar members as those of the conventional reamer 1 will be denoted by the same reference numerals, and detailed description will be omitted. The reamer 31 shown in the present embodiment has a tool body 32 having a substantially cylindrical outer diameter formed of a steel material or the like,
A tip mounting seat 33 is formed at the tip of the tool main body 32, and a tip 34 made of, for example, a cemented carbide is detachably attached to the tip mounting seat 33 by the clamp screw 5. A plurality of pads 11 are attached to the outer periphery of the tool main body 32. In addition,
A small-diameter pilot 40 is provided at the tip of the tool body 32, and a supply hole 32 a for cutting oil or the like is formed along the axis O from the rear end of the tool body 32 toward the tip.

【0013】この工具本体32の先端部外周には、軸線
Oに直交する断面において、工具本体32を略L字状に
切り欠くようにチップポケット41が形成されるととも
に、このチップポケット41の工具回転方向Tを向く底
面には、底面から一段窪むようにしてチップ取付座33
が形成されている。このチップ取付座33には、超硬合
金等の硬質材料よりなる略長方形平板形状のチップ34
がクランプネジ5によって着脱可能にして装着されてい
る。このチップ34の工具基端側には、軸線Oに直交す
る被押圧面42が形成されている。そして、チップ34
の工具先端外周側には切刃43が形成されており、切刃
43は、工具本体32の先端部に臨んで外周側に突出さ
せられている。なお、上記供給孔32aは工具本体32
の先端側で曲折させられ、この切刃43に向けてチップ
ポケット41の先端側を向く壁面に開口させられてい
る。
A tip pocket 41 is formed on the outer periphery of the tip of the tool body 32 so as to cut out the tool body 32 in a substantially L-shape in a cross section orthogonal to the axis O. On the bottom surface facing the rotation direction T, the chip mounting seat 33 is depressed one step from the bottom surface.
Are formed. The chip mounting seat 33 has a substantially rectangular flat chip 34 made of a hard material such as cemented carbide.
Are detachably mounted by the clamp screw 5. A pressed surface 42 orthogonal to the axis O is formed on the tool base end side of the tip 34. And the chip 34
A cutting edge 43 is formed on the outer peripheral side of the tool tip, and the cutting edge 43 is projected toward the outer peripheral side facing the distal end portion of the tool main body 32. The supply hole 32a is provided in the tool body 32.
The tip pocket 41 is bent toward the cutting edge 43 and is opened on the wall surface facing the tip side of the tip pocket 41.

【0014】また、工具本体32の先端部には、その外
周面からチップ取付座33の外周側を向く壁面に開口す
る一対の取付孔44が互いに平行に軸線O方向に並ぶよ
うにして形成されている。これらの取付孔44は、チッ
プ取付座側の小径部と工具本体外周面側のめねじ部が形
成された大径部とから構成されていて、小径部にはピン
45aが嵌挿されてその先端がチップ34の工具内周側
の側面に斜めに当接させられるとともに、大径部には調
整ネジ45bが上記ピン45aの後端に当接するように
ねじ込まれている。これによって、調整ネジ45bのね
じ込み量に応じて、ピン45aを介してチップ34が外
周側に押圧されることにより切刃43の工具外周側への
突出量を微調整する径方向位置調整機構7が構成されて
いる。
At the tip of the tool body 32, a pair of mounting holes 44 are formed parallel to each other in the direction of the axis O so as to open from the outer peripheral surface to the wall surface facing the outer peripheral side of the chip mounting seat 33. ing. These mounting holes 44 are composed of a small-diameter portion on the tip mounting seat side and a large-diameter portion formed with a female thread portion on the outer peripheral surface side of the tool main body. The tip of the tip 34 is obliquely contacted with the side surface on the tool inner peripheral side of the tip 34, and an adjusting screw 45b is screwed into the large diameter portion so as to contact the rear end of the pin 45a. Thus, the tip 34 is pressed to the outer peripheral side via the pin 45a in accordance with the screwing amount of the adjusting screw 45b, thereby finely adjusting the amount of protrusion of the cutting blade 43 toward the outer peripheral side of the tool. Is configured.

【0015】工具本体32の先端部には、チップ取付座
33の工具基端側に隣接して、軸線Oに平行な第一のネ
ジ孔46が形成されている。本実施の形態では、第一の
ネジ孔46は、工具本体32において、クランプネジ5
が螺着されるネジ孔よりも工具外周側に位置して形成さ
れている。この第一のネジ孔46内には、軸線O方向に
移動可能にして、軸線方向位置調整ネジ47が螺合され
ている。軸線方向位置調整ネジ47は、工具先端側の端
面が軸線Oに直交し、チップ34の被押圧面42を押圧
する押圧面48とされている。また、軸線方向位置調整
ネジ47は、その工具基端側の端面に、軸線方向位置調
整ネジ47を操作する調整工具K(図1では図示せず)
が係合される係合部49が形成されている。本実施形態
では、係合部49は六角穴とされ、調整工具Kは六角レ
ンチとされている(係合部49の形状及びこれに係合す
る調整工具Kの形状は、これ以外の任意の形状としても
よい)。
A first screw hole 46 parallel to the axis O is formed at the distal end of the tool body 32 adjacent to the tool base end of the tip mounting seat 33. In the present embodiment, the first screw hole 46 is provided in the tool body 32 with the clamp screw 5.
Is formed on the outer peripheral side of the tool with respect to the screw hole into which the screw is screwed. An axial position adjusting screw 47 is screwed into the first screw hole 46 so as to be movable in the direction of the axis O. The axial position adjusting screw 47 has a pressing surface 48 whose end surface on the tool tip side is orthogonal to the axis O and presses the pressed surface 42 of the chip 34. The axial position adjusting screw 47 has an adjusting tool K (not shown in FIG. 1) for operating the axial position adjusting screw 47 on the end face on the tool base end side.
Is formed with the engaging portion 49 with which the. In the present embodiment, the engaging portion 49 is a hexagonal hole, and the adjusting tool K is a hexagon wrench (the shape of the engaging portion 49 and the shape of the adjusting tool K engaged with the engaging portion 49 may be any other arbitrary shape. Shape).

【0016】さらに、工具本体32には、第一のネジ孔
46の工具基端側に隣接して工具外周側に開口され、第
一のネジ孔46の工具基端側の端部を外部に露出させる
操作口50が形成されている。この操作口50は、軸線
方向位置調整ネジ47を操作する際に用いる調整工具K
が挿入されるものであって、この調整工具Kを軸線方向
調整ネジ47の軸線まわりに角度α、例えば60°回転
させることができるよう、図2(a)に示すように、工
具本体32の外周面に対して、調整ネジ47の軸線を中
心に所定の角度範囲で開口されている。本実施の形態で
は、操作口50の内面のうち、工具回転方向Tを向く側
の面50aは、操作口50の底部から工具本体32の径
方向に沿って立ち上げられている。そして、工具回転方
向Tとは反対側を向く側の面50bは、底部から工具外
周側に向かうに従って工具回転方向T側に傾斜させて設
けられており、これによって操作口50の開口する角度
が確保されている。ここで、調整工具Kとして、係合部
49との係合時における軸線O方向の長さの短いものを
用いることで、操作口50の軸線O方向の幅を狭めて、
工具本体32の強度を向上させることができる。
Further, the tool main body 32 is opened on the tool outer peripheral side adjacent to the tool base end side of the first screw hole 46, and the tool base end side of the first screw hole 46 is connected to the outside. An operation port 50 to be exposed is formed. The operation port 50 is provided with an adjustment tool K used for operating the axial position adjustment screw 47.
As shown in FIG. 2 (a), the adjusting tool K can be rotated around the axis of the axial adjusting screw 47 by an angle α, for example, 60 °. The outer peripheral surface is opened in a predetermined angle range around the axis of the adjustment screw 47. In the present embodiment, of the inner surface of the operation port 50, the surface 50 a facing the tool rotation direction T is raised from the bottom of the operation port 50 along the radial direction of the tool main body 32. The surface 50b facing the side opposite to the tool rotation direction T is provided so as to be inclined in the tool rotation direction T side from the bottom toward the tool outer peripheral side, so that the angle at which the operation port 50 opens can be reduced. Is secured. Here, by using a tool having a short length in the direction of the axis O at the time of engagement with the engagement portion 49 as the adjustment tool K, the width of the operation port 50 in the direction of the axis O can be reduced.
The strength of the tool main body 32 can be improved.

【0017】そして、工具本体32には、第一のネジ孔
46に螺合される軸線方向位置調整ネジ47を、軸線O
方向に位置決めした状態で固定する固定機構51が設け
られている。この固定機構51は、工具本体32の外周
から第一のネジ孔46まで通じる第二のネジ孔52と、
この第二のネジ孔52に螺合されて、第一のネジ孔46
側の先端で軸線方向位置調整ネジ47の外周を押圧して
固定する固定ネジ53とを有している。第二のネジ孔5
2は、工具本体32においてチップポケット41よりも
工具基端側に離間して設けられている。固定ネジ53
は、軸線方向位置調整ネジ47と当接する先端に、ろう
付け等によって真鍮等の比較的柔らかい材質からなる当
接部53aが取り付けられており、この当接部53aに
よって、軸線方向位置調整ネジ47のネジ山を潰さずに
軸線方向位置調整ネジ47を押さえ込んでその回転を規
制することができるようになっている。ここで、固定ネ
ジ53と当接部53aとは必ずしも固定しておく必要は
なく、固定ネジ53と軸線方向位置調整ネジ47との間
に、固定ネジ53とは別体の当接部53aを介装する構
成としてもよい。
The tool main body 32 is provided with an axial position adjusting screw 47 screwed into the first screw hole 46 with an axis O.
A fixing mechanism 51 is provided for fixing while being positioned in the direction. The fixing mechanism 51 includes a second screw hole 52 communicating from the outer periphery of the tool body 32 to the first screw hole 46,
The second screw hole 52 is screwed into the first screw hole 46.
And a fixing screw 53 for pressing and fixing the outer periphery of the axial position adjusting screw 47 at the tip on the side. Second screw hole 5
2 is provided on the tool main body 32 at a position closer to the tool base end than the tip pocket 41. Fixing screw 53
A contact portion 53a made of a relatively soft material such as brass is attached to a tip of the screw which is in contact with the axial position adjusting screw 47 by brazing or the like. The rotation of the screw can be restricted by pressing down the axial position adjusting screw 47 without crushing the screw thread. Here, it is not always necessary to fix the fixing screw 53 and the contact portion 53a, and a contact portion 53a separate from the fixing screw 53 is provided between the fixing screw 53 and the axial position adjusting screw 47. It is good also as a structure interposed.

【0018】本実施形態に示すリーマ31においては、
これら第一のネジ孔46、軸線方向位置調整ネジ47、
操作口50、チップ34の被押圧面42、軸線方向位置
調整ネジ47の押圧面48、及び固定機構51とによっ
て軸線方向位置調整機構を構成している。
In the reamer 31 shown in this embodiment,
These first screw holes 46, axial position adjusting screws 47,
The operation port 50, the pressed surface 42 of the chip 34, the pressing surface 48 of the axial position adjusting screw 47, and the fixing mechanism 51 constitute an axial position adjusting mechanism.

【0019】以下より、このように構成されるリーマ3
1におけるチップ34の切刃43の位置調整について説
明する。ここでは、切刃43の工具外周側への突出量の
調整(径方向の位置調整)を先に行い、その後に切刃4
3のアドバンス量の調整(軸線O方向の位置調整)を行
う場合について説明するが、この逆の順番で調整を行っ
てもよい。切刃43の工具外周側への突出量の調整は、
クランプネジ5を緩めた状態で、工具本体32に形成さ
れた取付孔44に螺合される調整ネジ45bを操作し
て、調整ネジ45bによって取付孔44内のピン45a
を押圧し、ピン45aを介してチップ34を外周側に押
圧することで行われる。具体的には、調整ネジ45bの
ねじ込み量に応じて、ピン45aを介してチップ34が
外周側に押圧されることにより切刃43の工具外周側へ
の突出量が微調整される。
Hereinafter, the reamer 3 configured as described above will be described.
The position adjustment of the cutting edge 43 of the tip 34 in 1 will be described. Here, the adjustment of the amount of protrusion of the cutting blade 43 toward the outer peripheral side of the tool (radial position adjustment) is performed first, and then the cutting blade 4 is adjusted.
The case of performing the adjustment of the advance amount (position adjustment in the direction of the axis O) of 3 will be described, but the adjustment may be performed in the reverse order. The adjustment of the amount of protrusion of the cutting edge 43 toward the outer peripheral side of the tool
With the clamp screw 5 loosened, the adjusting screw 45b screwed into the mounting hole 44 formed in the tool main body 32 is operated, and the pin 45a in the mounting hole 44 is operated by the adjusting screw 45b.
By pressing the chip 34 to the outer peripheral side via the pin 45a. Specifically, the tip 34 is pressed to the outer peripheral side via the pin 45a according to the screwing amount of the adjusting screw 45b, so that the amount of protrusion of the cutting blade 43 toward the outer peripheral side of the tool is finely adjusted.

【0020】このようにして切刃43の工具外周側への
突出量を調整した後、以下のようにして、軸線方向位置
調整機構によってアドバンス量の調整を行う。なお、こ
の調整の際には、予め固定機構51の固定ネジ53によ
る軸線方向位置調整ネジ47の固定は解除しておく。ま
ず、図3に示すように、開口部50を通じて、ネジ穴4
6に螺合する軸線方向位置調整ネジ47の係合部49に
調整工具Kを係合させる。そして、調整工具Kによって
軸線方向位置調整ネジ47を操作して軸線O方向に移動
させ、軸線方向位置調整ネジ47の押圧面48によっ
て、チップ34の被押圧面42を押圧する。これによっ
てチップ34は軸線O方向に押圧力を受けて、工具先端
側に向けて移動される。このようにしてチップ34のア
ドバンス量を所定の値に設定した後、固定機構51の固
定ネジ53を締めつけて、当接部53aによって軸線方
向位置調整ネジ47を押さえつけて固定し、クランプネ
ジ5を締めつけてチップ34をチップ取付座33に固定
して、チップ34の切刃43の位置調整を終える。ここ
で、チップ34の被押圧面42及び軸線方向位置調整ネ
ジ47の押圧面48はそれぞれ工具本体32の軸線Oに
直交して設けられているので、アドバンス量の調整は、
被押圧面42と押圧面48とが面接触した状態で行われ
ることとなる。これによって、チップ34の支持が安定
し、位置決め精度が高められる。
After adjusting the amount of protrusion of the cutting blade 43 toward the outer peripheral side of the tool in this way, the advance amount is adjusted by the axial position adjusting mechanism as follows. In this adjustment, the fixing of the axial position adjusting screw 47 by the fixing screw 53 of the fixing mechanism 51 is released in advance. First, as shown in FIG.
The adjusting tool K is engaged with the engaging portion 49 of the axial position adjusting screw 47 screwed to the screw 6. Then, the axial position adjusting screw 47 is operated by the adjusting tool K to move in the direction of the axis O, and the pressed surface 42 of the chip 34 is pressed by the pressing surface 48 of the axial position adjusting screw 47. As a result, the tip 34 receives the pressing force in the direction of the axis O and is moved toward the tool tip. After the advance amount of the tip 34 is set to a predetermined value in this manner, the fixing screw 53 of the fixing mechanism 51 is tightened, and the axial position adjusting screw 47 is pressed and fixed by the contact portion 53a, and the clamp screw 5 is fixed. The tip 34 is fixed to the tip mounting seat 33 by tightening, and the position adjustment of the cutting edge 43 of the tip 34 is completed. Here, since the pressed surface 42 of the tip 34 and the pressing surface 48 of the axial position adjusting screw 47 are respectively provided orthogonal to the axis O of the tool main body 32, the adjustment of the advance amount is performed as follows.
The pressing is performed in a state where the pressed surface 42 and the pressing surface 48 are in surface contact. Thereby, the support of the chip 34 is stabilized, and the positioning accuracy is improved.

【0021】また、軸線方向位置調整ネジ47が螺合さ
れる第一のネジ孔46は、工具本体32において、クラ
ンプネジ5が螺着されるネジ孔よりも工具外周側に位置
して形成されているので、チップ34は、クランプネジ
5を中心として、切刃43を工具内周側に移動させる向
きの回転力を受けることになる。これによってチップ3
4は、径方向位置調整機構7のピン45aに密着するこ
ととなり、チップ34がより安定して支持された状態で
アドバンス量の調整が行われる。すなわち、切刃42の
径方向の位置調整の精度を確保しつつ、軸線O方向の位
置調整を行うことができる。
The first screw hole 46 into which the axial position adjusting screw 47 is screwed is formed in the tool main body 32 at a position closer to the outer periphery of the tool than the screw hole into which the clamp screw 5 is screwed. Therefore, the tip 34 receives a rotational force about the clamp screw 5 in a direction for moving the cutting edge 43 toward the tool inner periphery. This makes chip 3
4 comes into close contact with the pin 45a of the radial position adjusting mechanism 7, and the advance amount is adjusted while the tip 34 is more stably supported. That is, it is possible to adjust the position of the cutting blade 42 in the direction of the axis O while ensuring the accuracy of the position adjustment in the radial direction.

【0022】そして、このようにチップ34の支持が安
定することで、調整の手順を変えて、切刃43のアドバ
ンス量の調整を先に行い、その後に切刃43の工具外周
側への突出量の調整を行う場合にも、切刃43の工具外
周側への突出量の調整を容易かつ正確に行うことができ
る。
When the support of the tip 34 is stabilized, the adjustment procedure is changed to adjust the advance amount of the cutting blade 43 first, and then the protrusion of the cutting blade 43 to the outer peripheral side of the tool is performed. Even when the amount is adjusted, the amount of protrusion of the cutting blade 43 toward the outer periphery of the tool can be easily and accurately adjusted.

【0023】ここで、上記実施の形態では、軸線方向位
置調整ネジ47の押圧面48を平面とした例を示した
が、これに限られることなく、例えば押圧面48の内周
側に凹状の逃げを形成し、チップ34と軸線方向位置調
整ネジ47との接触面積を低減し、位置調整の際のこれ
らの間での摩擦抵抗を低減させてもよい。
Here, in the above-described embodiment, an example is shown in which the pressing surface 48 of the axial position adjusting screw 47 is a flat surface. However, the present invention is not limited to this. Relief may be formed to reduce the contact area between the tip 34 and the axial position adjustment screw 47 to reduce the frictional resistance between them during the position adjustment.

【0024】[0024]

【発明の効果】本発明にかかるリーマによれば、チップ
の軸線方向の位置調整は、ネジ孔に螺着される軸線方向
位置調整ネジによってチップを工具先端側に押圧して移
動させることで行われる。チップの被押圧面と軸線方向
位置調整ネジの押圧面はともに工具本体の軸線に対して
略直交しており、これらは面接触するので、この位置調
整の際にチップの支持が安定し、位置決め精度が高めら
れる。また、このようにチップの支持が安定すること
で、切刃の工具外周側への突出量の調整も容易かつ正確
に行うことができる。さらに、ネジ孔が軸線に略平行に
形成されていて工具本体の先端部の工具回転方向の肉厚
が確保されるので、ネジ孔を、工具本体において径方向
の任意の位置に形成することができ、例えばネジ孔を工
具本体の外周側に位置して形成して、チップの支持をよ
り安定させることもできる。
According to the reamer of the present invention, the axial position adjustment of the tip is performed by pressing the tip toward the tool tip side by the axial position adjusting screw screwed into the screw hole and moving the tip. Will be Both the pressed surface of the chip and the pressing surface of the axial position adjustment screw are substantially perpendicular to the axis of the tool body, and they come into surface contact, so that during this position adjustment, the support of the chip is stabilized and positioning is performed. Accuracy is increased. In addition, since the support of the chip is stabilized, the amount of protrusion of the cutting blade toward the outer periphery of the tool can be easily and accurately adjusted. Furthermore, since the screw hole is formed substantially parallel to the axis and the thickness of the tip of the tool body in the tool rotation direction is secured, it is possible to form the screw hole at an arbitrary position in the tool body in the radial direction. For example, a screw hole can be formed on the outer peripheral side of the tool body to stabilize the support of the chip.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の一実施形態にかかるリーマの形状を
示す図であって、(a)は側面図、(b)は(a)に示
すリーマを矢印C方向から示す側面図である。
FIGS. 1A and 1B are diagrams showing the shape of a reamer according to an embodiment of the present invention, wherein FIG. 1A is a side view, and FIG. 1B is a side view showing the reamer shown in FIG.

【図2】 (a)は図1(a)のD−D矢視断面図、
(b)は図1(a)のE−E矢視断面図である。
2A is a cross-sectional view taken along the line DD of FIG. 1A,
FIG. 2B is a cross-sectional view taken along the line EE in FIG.

【図3】 本発明の一実施形態にかかるリーマにおける
チップの位置調整の様子を示す側面図である。
FIG. 3 is a side view showing a state of position adjustment of a chip in the reamer according to the embodiment of the present invention.

【図4】 従来のリーマの形状を示す図であって、
(a)は側面図、(b)は(a)に示すリーマを矢印A
方向から示す側面図、(c)は(a)におけるB−B矢
視断面図である。
FIG. 4 is a view showing a shape of a conventional reamer,
(A) is a side view, (b) is a reamer shown in (a) with an arrow A
FIG. 3C is a side view showing the apparatus from the direction, and FIG.

【図5】 従来のリーマにおいて、チップの切刃と、工
具本体の先端に設けられるパッドの回転軌跡を示す図で
ある。
FIG. 5 is a view showing a cutting locus of a tip and a rotation locus of a pad provided at a tip of a tool body in a conventional reamer.

【符号の説明】[Explanation of symbols]

31 リーマ 32 工具本体 34 チップ 42 被押圧面 43 切刃 46 第一のネジ
孔 47 軸線方向位置調整ネジ 48 押圧面 50 操作口
31 Reamer 32 Tool body 34 Tip 42 Pressed surface 43 Cutting blade 46 First screw hole 47 Axial position adjusting screw 48 Pressing surface 50 Operation port

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 軸線回りに回転される略円柱形状の工具
本体の先端部に、切刃を前記工具本体の外周側に突出さ
せてスローアウェイチップが設けられるスローアウェイ
式リーマであって、 前記スローアウェイチップの工具基端側には、前記軸線
に略直交する被押圧面が形成され、 前記工具本体は、前記スローアウェイチップの工具基端
側に隣接して、前記軸線に略平行にして設けられるネジ
孔と、 該ネジ孔に、前記軸線方向に移動可能にして螺合される
とともに、工具先端側の端面が前記軸線に略直交し、前
記スローアウェイチップの被押圧面を押圧する押圧面と
される軸線方向位置調整ネジと、 前記ネジ孔の工具基端側に隣接して工具外周側に開口さ
れて、前記ネジ孔の工具基端側の端部を外部に露出させ
る操作口とを有していることを特徴とするスローアウェ
イ式リーマ。
1. A throw-away reamer provided with a throw-away tip at a tip end of a substantially cylindrical tool body that is rotated around an axis by projecting a cutting edge to an outer peripheral side of the tool body. On the tool base end side of the throw-away insert, a pressed surface that is substantially perpendicular to the axis is formed, and the tool main body is adjacent to the tool base end side of the throw-away tip and substantially parallel to the axis. A screw hole provided, which is screwed into the screw hole so as to be movable in the axial direction, and the end face on the tool tip side is substantially orthogonal to the axis, and presses the pressed surface of the indexable tip. An axial position adjusting screw that is a surface, an operation port that is open to a tool outer peripheral side adjacent to the tool base end side of the screw hole, and exposes a tool base end end of the screw hole to the outside. That you have Throw-away reamer and butterflies.
JP2000357673A 2000-11-24 2000-11-24 Throw-away reamer Expired - Fee Related JP3968988B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004345067A (en) * 2003-05-26 2004-12-09 Mitsubishi Materials Corp Throw-away type reamer
KR100722488B1 (en) * 2006-05-23 2007-05-28 케이메탈 주식회사 Cutting tool for inside diameter the second processing barrel for catapult
JP2008000829A (en) * 2006-06-20 2008-01-10 Mitsubishi Materials Corp Insert detachable type spherical cutter
KR20110117664A (en) * 2009-02-24 2011-10-27 코메트 그룹 게엠베하 Machine tool having adjustable plate element
JP2020203353A (en) * 2019-06-18 2020-12-24 真辺工業株式会社 Rotary cutting tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004345067A (en) * 2003-05-26 2004-12-09 Mitsubishi Materials Corp Throw-away type reamer
KR100722488B1 (en) * 2006-05-23 2007-05-28 케이메탈 주식회사 Cutting tool for inside diameter the second processing barrel for catapult
JP2008000829A (en) * 2006-06-20 2008-01-10 Mitsubishi Materials Corp Insert detachable type spherical cutter
KR20110117664A (en) * 2009-02-24 2011-10-27 코메트 그룹 게엠베하 Machine tool having adjustable plate element
JP2012518552A (en) * 2009-02-24 2012-08-16 コメート グループ ゲーエムベーハー Machine tool with adjustable plate element
KR101685221B1 (en) * 2009-02-24 2016-12-09 코메트 그룹 게엠베하 Machine tool having adjustable plate element
JP2020203353A (en) * 2019-06-18 2020-12-24 真辺工業株式会社 Rotary cutting tool
JP7074348B2 (en) 2019-06-18 2022-05-24 真辺工業株式会社 Reamer

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