JP2004255513A - Cylindrical grinder with a plurality of dressers - Google Patents

Cylindrical grinder with a plurality of dressers Download PDF

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Publication number
JP2004255513A
JP2004255513A JP2003048619A JP2003048619A JP2004255513A JP 2004255513 A JP2004255513 A JP 2004255513A JP 2003048619 A JP2003048619 A JP 2003048619A JP 2003048619 A JP2003048619 A JP 2003048619A JP 2004255513 A JP2004255513 A JP 2004255513A
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JP
Japan
Prior art keywords
grinding wheel
grinding
tailstock
headstock
diamond blade
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
Application number
JP2003048619A
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Japanese (ja)
Inventor
Toshiya Kurata
俊哉 倉田
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.)
Okamoto Machine Tool Works Ltd
Original Assignee
Okamoto Machine Tool Works Ltd
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 Okamoto Machine Tool Works Ltd filed Critical Okamoto Machine Tool Works Ltd
Priority to JP2003048619A priority Critical patent/JP2004255513A/en
Publication of JP2004255513A publication Critical patent/JP2004255513A/en
Pending legal-status Critical Current

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  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grinding wheel dressing and forming mechanism which easily and correctly dress and form a contouring grinding wheel. <P>SOLUTION: A cylindrical grinder 1 is equipped with a rotary dresser 21 rotating around an axis parallel to a horizontal axis direction of a workpiece w chucked by a headstock 2 and a tailstock 3 on the right side facing the tailstock, and includes a whetstone forming mechanism having a coarse single-stone diamond edge 22 and a fine single-stone diamond edge 23 toward a whetstone base 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、円筒状ワ−クの円筒部に粗研削、精研削およびコンタリング研削を施して自動車部品のクランプやダンベルを加工する円筒研削装置に関するものであり、特にこの円筒研削装置がロ−タリ−ドレッサと単石ダイヤモンド刃の複数を備えていることに特色を有する。
【0002】
【従来の技術】
円筒状ワ−クの回転軸線に対し平行なストレ−ト部と傾斜したテ−パ−部が設けられた砥石車を用い、先ず砥石車を円筒状ワ−クに対し回転軸線と直交するプランジ方向に移動させ粗研削、精研削を行った後、ついで砥石車をワ−クの回転軸線と平行なトラバ−ス方向でテ−パ−部もしくはR部のある向きに移動し円筒部およびこれに隣接する隅部にコンタリング研削を施して自動車部品を加工する円筒研削装置は知られている(例えば特許文献1参照)。この研削加工時に磨耗した砥石車を成形(ドレッシング)するために首振り単石ダイヤモンド刃を使用することも知られている(例えば特許文献2参照)。また、単石ダイヤモンド刃3個を支持ブロックの左右側面および上面に設けた3頭ドレッシング機構を使用し、平砥石車の右側面、左側面および外周面を成形することも知られている(例えば特許文献3参照)。
【0003】
【特許文献1】
特開平8−90408号公報(第3−6頁および図1、図10参照。)
【特許文献2】
USP4624236明細書(第2−4頁および図1、図3参照。)
【特許文献3】
特開平5−8172号公報(第5頁および図30参照。)
【0004】
【発明が解決しようとする課題】
前記特許文献2に開示される1個の単石ダイヤモンド刃で砥石車を成形する円筒研削装置では、砥石車の外周面を成形するには良いが、砥石車の左右側面を成形することが困難である。
前記特許文献3の3頭単石ダイヤモンド刃を有する3頭ドレッシング機構は砥石車の外周面、左右側面を成形することができるが、砥石車の傾斜部またはR面部を成形するのに砥石車の複雑な移動を要し、また、粗成形と精成形を同一の単石ダイヤモンド刃で行うため、砥石車の回転数や移動速度を変えて行う必要があり、作業者の熟練が要るかドレス成形プログラミングソフトの作成が困難であった。
【0005】
本発明者は、砥石車成形(ドレッシング)機構として、成形研削装置の砥石車の成形に用いられているロ−タリ−ドレッサをコンタリング研削砥石車の傾斜部またはR面の成形に用いることできることに着目し、これに単石ダイヤモンド刃を組み合すことにより円筒研削装置の砥石車の成形を容易とすることが可能である結論に達し、本発明に到った。
【0006】
【0007】
【課題を解決するための手段】
請求項1に記載の発明は、左右方向(Z軸方向)に移動可能な左右移動テ−ブル上に固定された主軸台と心押台、ベッド上に前後方向(X軸方向)に移動可能な前後移動テ−ブル上に設けられた砥石台、該砥石台に設けられた砥石頭の砥石軸に軸承された砥石車、前記主軸台の後面に設けられた砥石成形機構支持ブロックであって、この支持ブロックは前記主軸台と心押台によりチャックされたワ−クの水平軸方向に平行な軸回りに回転するロ−タリ−ドレッサを心押台に対向する右側に設け、粗単石ダイヤモンド刃と精単石ダイヤモンド刃を砥石台側に向けて備える砥石成形機構を支持するブロックであることを特徴とする、円筒研削を提供するものである。
【0008】
粗単石ダイヤモンド刃または精単石ダイヤモンド刃でコンタリング研削砥石車の回転軸に平行な外周部分を粗ドレス成形または精ドレス成形し、ロ−タリ−ドレッサで研削砥石車の傾斜部またはR面をコンタリング成形することで粗ドレス成形または精ドレス成形を行う。ロ−タリ−ドレッサで砥石車をコンタリング成形するとき、砥石車またはロ−タリ−ドレッサの移動速度および/または回転数を変えることにより粗ドレス成形または精ドレス成形することができる。
【0009】
【発明の実施の形態】
【実施例】
以下、図面を用いて本発明をさらに詳細に説明する。
図1は円筒研削装置の平面図、図2は円筒研削装置の正面図、図3は円筒研削装置の左側面図、および図4は砥石車を砥石車成形機構で成形する状態を示す図である。
【0010】
図1、図2および図3において、1は円筒研削装置、wはワ−ク、2は主軸台、2aは3爪スクロ−ルチャック、3は心押台、4は左右方向(Z軸方向)に移動可能な左右移動テ−ブル、5はリニアエンコ−ダ付サ−ボモ−タ、6はロ−タリ−エンコ−ダ付サ−ボモ−タ、7はフレ−ム、8はタイミングベルトである。主軸台2と心押台3はリニアエンコ−ダ付サ−ボモ−タの回転駆動を受けて左右方向(Z軸方向)に移動可能な左右移動テ−ブル4上に固定されている。ワ−クwは主軸台2の先端に設けられた3爪スクロ−ルチャック2aと心押台3を結ぶ軸線上に保持され、ロ−タリ−エンコ−ダ付サ−ボモ−タ6の駆動を受けて前記軸線の回りを回転する。
【0011】
9はベッド、10は砥石台、11は前後移動テ−ブル、12は砥石主軸、13は砥石車、14は安全カバ−、15は研削液供給ノズル、16はロ−タリ−エンコ−ダ付サ−ボモ−タ、17はリニアエンコ−ダ付サ−ボモ−タ、18は案内レ−ル、19は制御盤である。砥石車13を備えた砥石台10はリニアエンコ−ダ付サ−ボモ−タ17の駆動を受け、ワ−クの軸線と直交する前後方向(X軸方向)に移動可能となっている。砥石車13はロ−タリ−エンコ−ダ付サ−ボモ−タ16の駆動を受け砥石主軸12回りに回転可能となっている。
【0012】
砥石成形機構20は、ロ−タリ−ドレッサ21と、粗単石ダイヤモンド刃22と精単石ダイヤモンド刃23を備え、これらは前記主軸台2の後面に設けられた砥石成形機構支持ブロック24に備えられている。25はロ−タリ−エンコ−ダ付サ−ボモ−タで、ロ−タリ−ドレッサ21をその軸線21a回りに回転させる。砥石成形機構支持ブロック24は前記主軸台2と心押台3によりチャックされたワ−クwの水平軸方向に平行な軸回りに回転するロ−タリ−ドレッサ21を心押台3に対向する右側に設け、粗単石ダイヤモンド刃22と精単石ダイヤモンド刃23を砥石台10側に向けて備える。
【0013】
ロ−タリ−ドレッサ21は、例えば図1の円内拡大図にその外周端を示すように円環状基板21bの外周部より突起したR面(図では3mmR)を有するCBN砥石またはダイヤモンド砥石21cを備える。
【0014】
図1に示すダンベル用ワ−クwを加工する砥石車13は、図4に示すようにその外周面の両肩部はR面を有し、中央は砥石主軸12に平行な平面を有している。砥石車13は砥石成形機構のロ−タリ−ドレッサ21により両肩部R面をドレス成形され、外周部平行(ストレ−ト)部を粗単石ダイヤモンド刃22により粗ドレス成形、精単石ダイヤモンド刃23により精ドレス成形される。
【0015】
砥石車13とロ−タリ−ドレッサ21、砥石車13と粗単石ダイヤモンド刃22または精単石ダイヤモンド刃23との接触は、砥石台を載置している前後移動テ−ブル9の前後移動と主軸台2を載置している左右移動テ−ブル4の相対的移動により行なう。ロ−タリ−ドレッサ21による砥石車13の両肩部R面(傾斜部)の粗ドレス成形はロ−タリ−ドレッサ21の回転を遅くするか、左右移動テ−ブル4の移動を速くすることで行われる。言いかえれば、ロ−タリ−ドレッサ21による砥石車13の両肩部R面(傾斜部)の精ドレス成形はロ−タリ−ドレッサ21の回転を速くするか、左右移動テ−ブル4の移動を遅くすることで行われる。
【0016】
【発明の効果】
本発明の円筒研削装置は、コンタリング研削砥石車13の傾斜面をロ−タリ−ドレッサ21でコンタリング成形し、砥石車のストレ−ト部を粗ドレス単石ダイヤモンド刃22で粗成形または精ドレス単石ダイヤモンド刃23で精成形することができるので、砥石車13のドレス成形を精密に、かつ、複雑なドレス成形プログラミングを用いることなく容易に行うことができる。
【図面の簡単な説明】
【図1】円筒研削装置の平面図である。
【図2】円筒研削装置の正面図である。
【図3】円筒研削装置の左側面図である。
【図4】砥石車を砥石車成形機構で成形する状態を示す図である。
【符号の説明】
1 円筒研削装置
w ワ−ク
2 主軸台
3 心押台
4 左右移動テ−ブル
10 砥石台
11 前後移動テ−ブル
12 砥石主軸
13 砥石車
20 砥石成形機構
21 ロ−タリ−ドレッサ
22 粗単石ダイヤモンド刃
23 精単石ダイヤモンド刃
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical grinding apparatus for processing a clamp or a dumbbell of an automobile part by performing rough grinding, fine grinding and contour grinding on a cylindrical portion of a cylindrical work. It is characterized by having a plurality of tally dressers and single stone diamond blades.
[0002]
[Prior art]
Using a grinding wheel provided with a straight portion parallel to the rotation axis of the cylindrical work and a tapered taper portion, first, the grinding wheel is plunged perpendicular to the rotation axis with respect to the cylindrical work. After performing coarse and fine grinding by moving the grinding wheel, the grinding wheel is moved in the direction of the taper or R in the traverse direction parallel to the rotation axis of the work, and the cylindrical portion and the grinding wheel are moved. 2. Description of the Related Art There is known a cylindrical grinding apparatus for processing an automobile part by performing contouring grinding on a corner adjacent to a corner (for example, see Patent Document 1). It is also known to use a oscillating monolithic diamond blade for shaping (dressing) a grinding wheel worn during the grinding process (for example, see Patent Document 2). It is also known to use a three-piece dressing mechanism provided with three single-stone diamond blades on the left and right side surfaces and the upper surface of a support block to form the right side surface, the left side surface, and the outer peripheral surface of a flat grinding wheel (for example, it is known). Patent Document 3).
[0003]
[Patent Document 1]
JP-A-8-90408 (see page 3-6 and FIGS. 1 and 10)
[Patent Document 2]
US Pat. No. 4,624,236 (see pages 2-4 and FIGS. 1 and 3)
[Patent Document 3]
JP-A-5-8172 (see page 5 and FIG. 30)
[0004]
[Problems to be solved by the invention]
In the cylindrical grinding device for forming a grinding wheel with one single stone diamond blade disclosed in Patent Document 2, it is good to form the outer peripheral surface of the grinding wheel, but it is difficult to form the left and right side surfaces of the grinding wheel. It is.
The three-head dressing mechanism having the three-head monolithic diamond blade disclosed in Patent Document 3 can form the outer peripheral surface, the left and right side surfaces of the grinding wheel, but it is necessary to form the inclined portion or the R surface portion of the grinding wheel. Since complicated movement is required, and rough forming and fine forming are performed with the same single stone diamond blade, it is necessary to change the rotation speed and moving speed of the grinding wheel. It was difficult to create molding programming software.
[0005]
The present inventor can use a rotary dresser used for forming a grinding wheel of a forming and grinding apparatus as a grinding wheel forming (dressing) mechanism for forming an inclined portion or an R surface of a contouring grinding wheel. And concluded that it is possible to easily form a grinding wheel of a cylindrical grinding device by combining a single stone diamond blade with the diamond wheel.
[0006]
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, a headstock and a tailstock fixed on a left-right moving table movable in the left-right direction (Z-axis direction), and movable on the bed in the front-rear direction (X-axis direction). A grindstone table provided on a front-rear moving table, a grindstone wheel supported on a grindstone shaft of a grindstone head provided on the grindstone table, and a grindstone forming mechanism support block provided on a rear surface of the headstock. The support block is provided with a rotary dresser on the right side facing the tailstock, the rotary dresser being rotated around an axis parallel to the horizontal axis direction of the work chucked by the headstock and the tailstock. The present invention provides cylindrical grinding, which is a block that supports a grinding wheel forming mechanism including a diamond blade and a pure stone diamond blade facing the grinding wheel base.
[0008]
Coarse dressing or fine dressing of the outer peripheral part parallel to the rotation axis of the grinding wheel with a rough single stone diamond blade or fine single stone diamond blade, and the inclined part or R surface of the grinding wheel with a rotary dresser To form a rough dress or a fine dress. When contouring a grinding wheel with a rotary dresser, coarse dressing or fine dressing can be performed by changing the moving speed and / or the number of revolutions of the grinding wheel or the rotary dresser.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
【Example】
Hereinafter, the present invention will be described in more detail with reference to the drawings.
1 is a plan view of a cylindrical grinding device, FIG. 2 is a front view of the cylindrical grinding device, FIG. 3 is a left side view of the cylindrical grinding device, and FIG. 4 is a diagram showing a state in which a grinding wheel is formed by a grinding wheel forming mechanism. is there.
[0010]
1, 2 and 3, 1 is a cylindrical grinding device, w is a work, 2 is a headstock, 2a is a three-jaw scroll chuck, 3 is a tailstock, and 4 is a horizontal direction (Z-axis direction). 5 is a servo motor with a linear encoder, 6 is a servo motor with a rotary encoder, 7 is a frame, and 8 is a timing belt. . The headstock 2 and the tailstock 3 are fixed on a left / right moving table 4 which can be moved in the left / right direction (Z-axis direction) under the rotation of a servomotor with a linear encoder. The work w is held on an axis connecting the three-jaw scroll chuck 2a provided at the tip of the headstock 2 and the tailstock 3, and drives the servo motor 6 with a rotary encoder. And rotate around the axis.
[0011]
9 is a bed, 10 is a grindstone table, 11 is a table for moving back and forth, 12 is a grindstone spindle, 13 is a grindstone wheel, 14 is a safety cover, 15 is a grinding fluid supply nozzle, and 16 is a rotary encoder. A servo motor, 17 is a servo motor with a linear encoder, 18 is a guide rail, and 19 is a control panel. The grindstone table 10 provided with the grindstone wheel 13 is driven by a servomotor 17 with a linear encoder, and is movable in the front-rear direction (X-axis direction) orthogonal to the work axis. The grinding wheel 13 is driven by a rotary encoder-equipped servo motor 16 and is rotatable about the grinding wheel spindle 12.
[0012]
The grindstone forming mechanism 20 includes a rotary dresser 21, a rough single stone diamond blade 22, and a fine single stone diamond blade 23, which are provided on a grindstone forming mechanism support block 24 provided on the rear surface of the headstock 2. Have been. Reference numeral 25 denotes a servomotor with a rotary encoder, which rotates the rotary dresser 21 around its axis 21a. The grindstone forming mechanism support block 24 faces the tailstock 3 with a rotary dresser 21 rotating about an axis parallel to the horizontal axis direction of the work w chucked by the headstock 2 and the tailstock 3. Provided on the right side, a rough single stone diamond blade 22 and a fine single stone diamond blade 23 are provided facing the grindstone table 10 side.
[0013]
The rotary dresser 21 is, for example, a CBN grindstone or a diamond grindstone 21c having an R surface (3 mmR in the figure) protruding from the outer periphery of the annular substrate 21b as shown in the enlarged view in the circle of FIG. Prepare.
[0014]
As shown in FIG. 4, the grinding wheel 13 for processing the dumbbell work w shown in FIG. 1 has two shoulders on the outer peripheral surface, and has a plane parallel to the grinding wheel spindle 12 at the center. ing. The grinding wheel 13 is dress-formed on both shoulder R surfaces by a rotary dresser 21 of a grinding wheel forming mechanism, and the outer peripheral parallel (straight) portion is coarsely dressed by a coarse monolithic diamond blade 22 to form a fine monolithic diamond. Fine dressing is performed by the blade 23.
[0015]
The contact between the grinding wheel 13 and the rotary dresser 21 and the contact between the grinding wheel 13 and the coarse single stone diamond blade 22 or the fine single stone diamond blade 23 is caused by the forward and backward movement of the forward and backward moving table 9 on which the grinding wheel table is mounted. And the relative movement of the left and right moving table 4 on which the headstock 2 is mounted. The rough dressing of the both shoulder R surfaces (inclined portions) of the grinding wheel 13 by the rotary dresser 21 is to slow down the rotation of the rotary dresser 21 or to speed up the movement of the left and right moving table 4. Done in In other words, the precise dressing of the both shoulders R surfaces (inclined portions) of the grinding wheel 13 by the rotary dresser 21 speeds up the rotation of the rotary dresser 21 or moves the right and left moving table 4. This is done by slowing down.
[0016]
【The invention's effect】
In the cylindrical grinding apparatus of the present invention, the inclined surface of the contouring grinding wheel 13 is contoured by a rotary dresser 21 and the straight portion of the grinding wheel is roughly formed or refined by a coarse dress single stone diamond blade 22. Since the dressing can be precisely formed by the single-stone diamond blade 23, the dressing of the grinding wheel 13 can be easily performed accurately and without using complicated dressing programming.
[Brief description of the drawings]
FIG. 1 is a plan view of a cylindrical grinding device.
FIG. 2 is a front view of the cylindrical grinding device.
FIG. 3 is a left side view of the cylindrical grinding device.
FIG. 4 is a diagram showing a state in which a grinding wheel is formed by a grinding wheel forming mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylindrical grinding device w Work 2 Headstock 3 Tailstock 4 Left and right moving table 10 Grinding table 11 Front and back moving table 12 Grinding wheel spindle 13 Grinding wheel 20 Grinding stone forming mechanism 21 Rotary dresser 22 Diamond Blade 23 Pure Stone Diamond Blade

Claims (1)

左右方向(Z軸方向)に移動可能な左右移動テ−ブル上に固定された主軸台と心押台、ベッド上に前後方向(X軸方向)に移動可能な前後移動テ−ブル上に設けられた砥石台、該砥石台に設けられた砥石頭の砥石軸に軸承された砥石車、前記主軸台の後面に設けられた砥石成形機構支持ブロックであって、この支持ブロックは前記主軸台と心押台によりチャックされたワ−クの水平軸方向に平行な軸回りに回転するロ−タリ−ドレッサを心押台に対向する右側に設け、粗単石ダイヤモンド刃と精単石ダイヤモンド刃を砥石台側に向けて備える砥石成形機構を支持するブロックであることを特徴とする、円筒研削装置。A headstock and tailstock fixed on a left-right movable table movable in the left-right direction (Z-axis direction) and provided on a front-rear movable table movable in the front-rear direction (X-axis direction) on a bed. A grinding wheel head, a grinding wheel supported on a grinding wheel shaft of a grinding wheel head provided on the grinding wheel head, a grinding wheel forming mechanism support block provided on a rear surface of the headstock, and the support block is the same as the headstock. A rotary dresser that rotates around an axis parallel to the horizontal axis of the work chucked by the tailstock is provided on the right side opposite to the tailstock, and a coarse single stone diamond blade and a fine single stone diamond blade are provided. A cylindrical grinding device, which is a block that supports a grinding wheel forming mechanism provided toward a grinding wheel table side.
JP2003048619A 2003-02-26 2003-02-26 Cylindrical grinder with a plurality of dressers Pending JP2004255513A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103659608A (en) * 2013-12-09 2014-03-26 上海机床厂有限公司 Grinding wheel dressing device being coaxial with and sharing driving force with headstock spindle
CN112536654A (en) * 2020-12-01 2021-03-23 重庆市璧山区合成机械制造有限公司 Grinding device is used in automobile tire processing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103659608A (en) * 2013-12-09 2014-03-26 上海机床厂有限公司 Grinding wheel dressing device being coaxial with and sharing driving force with headstock spindle
CN112536654A (en) * 2020-12-01 2021-03-23 重庆市璧山区合成机械制造有限公司 Grinding device is used in automobile tire processing
CN112536654B (en) * 2020-12-01 2021-11-26 重庆市璧山区合成机械制造有限公司 Grinding device is used in automobile tire processing

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