JPH05269666A - Dressing method for grinding wheel - Google Patents

Dressing method for grinding wheel

Info

Publication number
JPH05269666A
JPH05269666A JP6744692A JP6744692A JPH05269666A JP H05269666 A JPH05269666 A JP H05269666A JP 6744692 A JP6744692 A JP 6744692A JP 6744692 A JP6744692 A JP 6744692A JP H05269666 A JPH05269666 A JP H05269666A
Authority
JP
Japan
Prior art keywords
grindstone
truer
axis
grinding wheel
tooth
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
JP6744692A
Other languages
Japanese (ja)
Inventor
Tomoyasu Imai
智康 今井
Masato Kitajima
正人 北島
Norio Ota
規男 太田
Ryohei Mukai
良平 向井
Kazuhisa Sugiyama
和久 杉山
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP6744692A priority Critical patent/JPH05269666A/en
Publication of JPH05269666A publication Critical patent/JPH05269666A/en
Pending legal-status Critical Current

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  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

PURPOSE:To facilitate replacement or adjustment of a truer and to accurately carry out trueing of a cylindrical worm state grinding wheel. CONSTITUTION:A shaft Pw of a grinding wheel is inclined within a plane in parallel to a plane including a shaft Pt of a truer so that a tooth right-angle plane of a cylindrical worm state grinding wheel 27 includes the shaft Pt of the truer 25, an addendum 25a of the truer is brought into contact with the tooth face of the grinding wheel 27 with maintaining this state, and the grinding wheel 27 is moved in the direction of the shaft Pw of the grinding wheel against the position of the truer 25 by the length obtained by multiplying the pitch of the grinding wheel by the number of streaks against one rotation of the grinding wheel. As the cross-sectional shape of the addendum 25a of the truer accords with the tooth right-angle cross-sectional shape of the tooth of the grinding wheel 27, it is not necessary to replace the truer 25 even if the diameter of the grinding wheel is changed. Also, by moving the grinding wheel 27 in the direction of its shaft Pw, the tooth face of the grinding wheel 27 can be accurately shaped.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、歯車を加工する円筒
ウォーム状砥石の歯面を正確に修正するための砥石の修
正方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grindstone correcting method for accurately correcting the tooth surface of a cylindrical worm-shaped grindstone for machining a gear.

【0002】[0002]

【従来の技術】円筒ウォーム状砥石を用いてはすば歯車
又は平歯車若しくはウォーム歯車を加工する歯車研削盤
においては、加工精度を高めるために円筒ウォーム状砥
石の歯面を整えるためのツルーイングを行ったり、歯車
の加工後に砥粒の突出高が不均一になったり目詰まりが
生じた円筒ウォーム状砥石の歯面をドレッシングする等
の砥石歯面の修正を行うことが必要とされる。前記ツル
ーイングは、例えば図7に示すような円盤状のツルア
1,2を用いて行う。このツルア1,2は、片面が円筒
ウォーム状砥石3の歯面4の軸直角圧力角αaに等しい
傾斜角を有するテーパ面1a,2aとなった平円板であ
り、テーパ面1a,2aにはダイヤモンド粒が均一に付
着されているものである。この一対のツルア1,2のテ
ーパ面1a,2aを砥石3の歯溝に合せて対向配置し、
砥石3を回転させつつその軸Pw方向へ移動させること
により砥石3の歯面4を研削して元の歯形に整形する。
このとき、ツルア1,2の位置は固定されており、砥石
3を一回転させる毎に砥石3のピッチt0 に条数を乗じ
た長さずつ進ませることによって歯面4の全部を整形す
る。ツルア1,2の軸Ptは砥石3の軸Pwに対して平
行である。なお、ドレッシングの場合にも、ツルア1,
2をドレッサに置換すれば、同様の動作でドレッシング
を行うことができる。
2. Description of the Related Art In a gear grinder that processes a helical gear, a spur gear, or a worm gear by using a cylindrical worm-shaped grindstone, a truing for adjusting the tooth surface of the cylindrical worm-shaped grindstone is used in order to improve machining accuracy. It is necessary to correct the tooth flank of the cylindrical worm-shaped grindstone in which the protrusion height of the abrasive grains becomes non-uniform or clogging occurs after machining the gear. The truing is performed using, for example, disk-shaped truers 1 and 2 as shown in FIG. The truers 1 and 2 are flat discs each having a taper surface 1a, 2a having an inclination angle equal to the axial right angle pressure angle αa of the tooth surface 4 of the cylindrical worm-shaped grindstone 3, and the taper surfaces 1a, 2a Indicates that diamond grains are uniformly attached. The tapered surfaces 1a and 2a of the pair of truers 1 and 2 are arranged so as to face each other in the tooth groove of the grindstone 3,
By rotating the grindstone 3 and moving it in the direction of the axis Pw, the tooth surface 4 of the grindstone 3 is ground and shaped into the original tooth profile.
At this time, the positions of the truers 1 and 2 are fixed, and every time the grindstone 3 is rotated once, the pitch t0 of the grindstone 3 is advanced by a length obtained by multiplying the number of threads to shape the entire tooth surface 4. The axes Pt of the truers 1 and 2 are parallel to the axis Pw of the grindstone 3. In addition, even in the case of dressing,
If 2 is replaced with a dresser, dressing can be performed by the same operation.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、前記の
ように、円筒ウォーム状砥石3を、その軸Pw方向へ移
動させつつツルーイングを行う方法にあっては、砥石3
自体を異なる径のものに交換したり、歯車研削加工によ
る磨耗により径が減少する等によって、砥石3の径が変
化した場合には、単にツルア1,2の軸方向の間隔を調
整しただけでは、砥石3の軸直角圧力角αaにテーパ面
1a,2aが平行にならない。これは、円筒ウォーム状
砥石3の軸直角圧力角αaがピッチ円径dと相関関係に
あり、ピッチ円径dが変化すると軸直角圧力角αaが変
化するためである。
However, as described above, in the method of performing truing while moving the cylindrical worm-shaped grindstone 3 in the axis Pw direction, the grindstone 3 is used.
If the diameter of the grindstone 3 changes due to replacement of itself with a different diameter or due to wear due to gear grinding, etc., simply adjust the axial spacing of the truers 1 and 2. , The taper surfaces 1a and 2a are not parallel to the axis-perpendicular pressure angle αa of the grindstone 3. This is because the axis-perpendicular pressure angle αa of the cylindrical worm-shaped grindstone 3 is correlated with the pitch circle diameter d, and when the pitch circle diameter d changes, the axis-perpendicular pressure angle αa changes.

【0004】このため、テーパ面1a,2aを軸直角圧
力角αaの変化に対応させるためには、テーパ面1a,
2aの傾斜角が異なるツルア1,2を多数種準備してお
き、砥石3の径が変化する毎にその径に適したツルア
1,2と交換するか、或いは、ツルア1,2の軸受ブラ
ケット5,6を回動可能として、図7中の矢印A,Bで
示すように互いに逆方向に回動させることにより、テー
パ面1a,2aの当り角を変えることを行わなければな
らない。しかし、前者はツルア1,2を多数用意しなけ
ればならないし、交換作業が煩雑である。また、後者は
ツルア1,2を回動させる角度の調整が微細であり、熟
練が必要となる。これは、ツルア1,2の代わりに同形
状のドレッサを用いたドレッシング方法においても同様
である。
Therefore, in order to make the tapered surfaces 1a, 2a correspond to the change of the axis-perpendicular pressure angle αa, the tapered surfaces 1a, 2a
A large number of types of truers 1 and 2 having different inclination angles of 2a are prepared, and each time the diameter of the grindstone 3 changes, it is replaced with a truer 1 or 2, which is suitable for the diameter, or a bearing bracket for the truers 1 and 2. It is necessary to change the contact angles of the taper surfaces 1a and 2a by making 5 and 6 rotatable and rotating them in opposite directions as shown by arrows A and B in FIG. However, the former must prepare a large number of truers 1 and 2, and the replacement work is complicated. Further, the latter requires fine adjustment of the angle for rotating the tourers 1 and 2, and requires skill. This also applies to the dressing method using dressers of the same shape instead of the truers 1 and 2.

【0005】[0005]

【課題を解決するための手段】前記課題を解決するため
に本発明は、歯車研削盤の回転主軸に装着されて歯車の
加工を行う円筒ウォーム状砥石の歯面を、該砥石の歯の
歯直角平面による断面形状に等しい断面形状の歯先を有
する円盤状の修正工具によって整形する砥石の修正方法
であって、前記円筒ウォーム状砥石の歯直角平面が前記
修正工具の軸を含むように、前記円筒ウォーム状砥石の
軸を前記修正工具の軸を含む一平面に対して平行な平面
内において傾け、この状態を維持しつつ、前記円筒ウォ
ーム状砥石の歯面に前記修正工具の歯先を当接させ、該
修正工具の位置に対して、前記円筒ウォーム状砥石を、
該砥石の一回転に対して該砥石のピッチに条数を乗じた
長さずつ、該砥石の軸方向に移動させることを特徴とし
ている。
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a toothed surface of a cylindrical worm-shaped grindstone mounted on a rotating main shaft of a gear grinding machine for machining a gear. A method of repairing a grindstone shaped by a disk-shaped repair tool having a tip of a cross-sectional shape equal to the cross-sectional shape of a right-angled plane, wherein the tooth-perpendicular plane of the cylindrical worm-shaped grindstone includes the axis of the correction tool, The axis of the cylindrical worm-shaped grindstone is tilted in a plane parallel to a plane including the axis of the correction tool, and while maintaining this state, the tip of the correction tool is attached to the tooth surface of the cylindrical worm-shaped grindstone. Abutting, with respect to the position of the correction tool, the cylindrical worm-shaped grindstone,
It is characterized in that it is moved in the axial direction of the grindstone by a length obtained by multiplying the pitch of the grindstone by the number of threads for one rotation of the grindstone.

【0006】[0006]

【作用】円筒ウォーム状砥石の歯直角断面(歯の歯直角
平面による断面形状)は、砥石の径が変化してもピッチ
が一定であれば一定である。従って、上記のように、砥
石の軸を修正工具の軸に対して傾ければ、砥石の歯直角
断面形状である修正工具の歯先が砥石の歯面に合致して
当接する。この状態で砥石をその軸方向に所定速度で移
動させることにより、修正工具の径を通る平面上におい
て、修正工具の軸と砥石の軸とが、常に砥石と修正工具
との中心距離を維持することになる。これによって、砥
石の歯面は正確な円筒状に修正される。なお、砥石の修
正とは、ツルーイング又はドレッシングのことである。
The cross-section of the cylindrical worm-shaped grindstone perpendicular to the teeth (the cross-sectional shape of the plane perpendicular to the teeth) is constant even if the diameter of the grindstone changes, as long as the pitch is constant. Therefore, as described above, if the axis of the grindstone is tilted with respect to the axis of the correction tool, the tooth tips of the correction tool, which have a sectional shape perpendicular to the teeth of the grindstone, are brought into contact with the tooth surface of the grindstone. By moving the grindstone in this state in the axial direction at a predetermined speed, on the plane passing through the diameter of the correction tool, the axis of the correction tool and the axis of the grindstone always maintain the center distance between the grindstone and the correction tool. It will be. As a result, the tooth flank of the grindstone is corrected to have an accurate cylindrical shape. The correction of the grindstone is truing or dressing.

【0007】[0007]

【実施例】先ず、本発明の砥石の修正方法を実施するた
めの歯車研削盤の一例を図面に基づいて説明する。図1
の正面図に示すように、機台11上には可動テーブル1
2が水平方向に移動可能に載置されている。この可動テ
ーブル12の下面にはボールナット14が固定されてお
り、このボールナット14は機台11内に架設されたボ
ールねじ13に螺合している。機台11の一端に取付け
られたモータ15によりボールねじ13を正逆回転させ
ることにより、ボールナット14と共に可動テーブル1
2が機台11上を図中左右方向に進退移動する。可動テ
ーブル12上には、主軸台16と心押台17とが対向す
るように、かつ可動テーブル12上を図中左右方向に移
動可能に載置されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an example of a gear grinding machine for carrying out the method for correcting a grindstone of the present invention will be described with reference to the drawings. Figure 1
As shown in the front view of FIG.
2 is movably mounted in the horizontal direction. A ball nut 14 is fixed to the lower surface of the movable table 12, and the ball nut 14 is screwed onto a ball screw 13 installed inside the machine base 11. The motor 15 attached to one end of the machine base 11 rotates the ball screw 13 in the forward and reverse directions to move the ball nut 14 and the movable table 1 together.
2 moves forward and backward on the machine base 11 in the left-right direction in the figure. A headstock 16 and a tailstock 17 are mounted on the movable table 12 so as to face each other and movable on the movable table 12 in the left-right direction in the drawing.

【0008】図2の側面図に示すように、可動テーブル
12の後方(図中右方)には、コラム23が立設されて
おり、このコラム23の前面には、回転台18が、その
水平軸44により回転可能に支持されている。回転台1
8の前面には砥石台19が支持されている。この回転台
18の背面には、コラム23に固定されたモータ45に
より回転するシャフト20が垂下されており、このシャ
フト20に軸着されたウォーム21に噛合う円形のウォ
ームホイル22が軸44の外周に設けられている。モー
タ45によりウォーム21を正逆回転させることによ
り、回転台18は水平軸44を中心として回動する。ま
た、コラム23の下部には、機台11に固定されたモー
タ46により回転するボールねじ47とコラム23に固
定されたボールナット48が設けられており、これらに
よりコラム23が水平軸44と平行な前後方向(図中左
右方向)に進退移動可能である。回転台18には、回転
台18に固定されたモータ41により回転するボールね
じ42と砥石台19に固定されたボールナット43が設
けられており、これらにより砥石台19が上下方向に移
動可能になっている。
As shown in the side view of FIG. 2, a column 23 is provided upright on the rear side (right side in the figure) of the movable table 12, and on the front surface of the column 23, a turntable 18 is installed. It is rotatably supported by a horizontal shaft 44. Turntable 1
A grindstone base 19 is supported on the front surface of 8. A shaft 20 that is rotated by a motor 45 fixed to a column 23 hangs down on the back surface of the rotary table 18, and a circular worm wheel 22 that meshes with a worm 21 that is pivotally attached to the shaft 20 has a shaft 44. It is provided on the outer circumference. By rotating the worm 21 forward and backward by the motor 45, the turntable 18 rotates about the horizontal shaft 44. A ball screw 47 that is rotated by a motor 46 that is fixed to the machine base 11 and a ball nut 48 that is fixed to the column 23 are provided below the column 23, and the column 23 is parallel to the horizontal shaft 44. It is possible to move forward and backward in the forward and backward directions (left and right directions in the figure). The turntable 18 is provided with a ball screw 42 which is rotated by a motor 41 which is fixed to the turntable 18 and a ball nut 43 which is fixed to the grindstone base 19, so that the grindstone base 19 can be moved in the vertical direction. Is becoming

【0009】また、可動テーブル12の後部上面には、
ツルーイング装置24が立設されている。このツルーイ
ング装置24は、鉛直方向を軸として立設されており、
その上端には、水平面内で回転するように一枚の円盤状
のツルア25が回転可能に支持されている。ツルア25
は、ツルーイング装置24の下部に設けられたモータ
(図示略)により回転する。図4に示すように、ツルア
25の歯先25aの断面形状は砥石27の歯溝31の歯
直角平面における断面形状に合致しており、上下面には
砥石27の歯先面32に接する円筒部25bが形成され
ている。歯先25aと円筒部25bの全表面には、ダイ
ヤモンド細粒が均一に付着されている。
On the rear upper surface of the movable table 12,
A truing device 24 is erected. The truing device 24 is erected about a vertical axis,
A disk-shaped truer 25 is rotatably supported at its upper end so as to rotate in a horizontal plane. Tsurua 25
Is rotated by a motor (not shown) provided under the truing device 24. As shown in FIG. 4, the cross-sectional shape of the tooth tip 25a of the truer 25 matches the cross-sectional shape of the tooth groove 31 of the grindstone 27 in the plane perpendicular to the tooth, and the upper and lower surfaces of the tooth contact surface 32 of the grindstone 27 are in contact with the cylinder. The portion 25b is formed. Fine diamond particles are uniformly attached to the entire surfaces of the tooth tip 25a and the cylindrical portion 25b.

【0010】この歯車研削盤により研削加工を行う場合
には、図1に示すように、主軸台16のチャック28と
心押台17との間に被研削物30の軸29を水平に支持
し、砥石台19のスピンドル26に装着された円筒ウォ
ーム状砥石27を用いて被研削物30の研削加工を行
う。このとき、被研削物30がはすば歯車である場合に
は、円筒ウォーム状砥石27の軸Pwは鉛直方向に向い
ている。そして、円筒ウォーム状砥石27とはすば歯車
30とを、このはすば歯車と噛合うウォームとの関係と
同一の関係となるように回転させることにより、はすば
歯車30の研削加工を行う。
When grinding is performed by this gear grinding machine, as shown in FIG. 1, a shaft 29 of an object to be ground 30 is horizontally supported between a chuck 28 of a headstock 16 and a tailstock 17. The object to be ground 30 is ground using the cylindrical worm-shaped grindstone 27 mounted on the spindle 26 of the grindstone base 19. At this time, when the object to be ground 30 is a helical gear, the axis Pw of the cylindrical worm-shaped grindstone 27 is oriented in the vertical direction. Then, the cylindrical worm-shaped grindstone 27 and the helical gear 30 are rotated so as to have the same relationship with the worm that meshes with the helical gear, thereby grinding the helical gear 30. To do.

【0011】次に、本実施例に係る砥石のツルーイング
方法について説明する。先ず、図3に示すように、砥石
台18を回動させることにより、被研削物30の加工時
に鉛直方向を向いていた砥石27の軸Pwを、ツルアの
軸Ptを含む一平面(本実施例では、紙面に平行な面と
する)に対して平行な平面内において鉛直線Pvに対し
て砥石27の歯面のねじれ角γだけ傾ける。この回転台
18の回動方向は、砥石27の歯直角平面がツルア25
の軸Ptを含むようになる方向である。本実施例では、
ツルア25の軸Ptが鉛直方向を向いているから、紙面
に垂直な歯直角平面が鉛直線Pvに平行となるように回
転台18を回動させる。このように砥石27の軸Pwを
傾けることにより、砥石27の歯すじは水平面に対して
平行となる。なお、図3においては主軸台16の図示を
省略してある。
Next, the method of truing the grindstone according to this embodiment will be described. First, as shown in FIG. 3, by rotating the grindstone base 18, the axis Pw of the grindstone 27, which was oriented in the vertical direction during the processing of the object to be ground 30, is changed to a plane including the axis Pt of the truer (this embodiment). In the example, a plane parallel to the paper surface) is inclined by a helix angle γ of the tooth surface of the grindstone 27 with respect to the vertical line Pv. Regarding the rotation direction of the rotary table 18, the plane perpendicular to the teeth of the grindstone 27 is the truer 25.
This is the direction in which the axis Pt of is included. In this example,
Since the axis Pt of the truer 25 is oriented in the vertical direction, the rotary table 18 is rotated so that the plane perpendicular to the teeth, which is perpendicular to the teeth, is parallel to the vertical line Pv. By thus inclining the axis Pw of the grindstone 27, the teeth of the grindstone 27 are parallel to the horizontal plane. The headstock 16 is not shown in FIG.

【0012】この状態で、可動テーブル12を図中右方
へ移動させ、ツルア25が砥石27の歯溝に当たる位置
で停止させる。このときの砥石27とツルア25の位置
関係を正面から見た状態を図4に示す。同図に示すよう
に、ツルア25の軸Ptに対して砥石27の軸Pwは、
砥石27の歯先のねじれ角γだけ傾いている。また、ツ
ルアの軸Ptは砥石27の歯直角平面に含まれている。
図4中のA矢視である図5に示すように、ツルアの軸P
tと砥石の軸Pwとは、紙面に垂直で互いに平行な平面
内にあり、この2つの平行な平面の距離Lはツルア25
と砥石27の中心距離に等しい。同図においては、紙面
が砥石27の歯直角平面である。
In this state, the movable table 12 is moved to the right in the figure, and stopped at a position where the truer 25 contacts the tooth groove of the grindstone 27. FIG. 4 shows a state in which the positional relationship between the grindstone 27 and the truer 25 at this time is viewed from the front. As shown in the figure, the axis Pw of the grindstone 27 with respect to the axis Pt of the truer 25 is
The tip of the grindstone 27 is inclined by the twist angle γ. The axis Pt of the truer is included in the plane perpendicular to the teeth of the grindstone 27.
As shown in FIG. 5 which is an arrow A in FIG.
t and the axis Pw of the grindstone are in planes perpendicular to the paper plane and parallel to each other, and the distance L between these two parallel planes is 25.
And the center distance of the grindstone 27. In the figure, the paper surface is the plane perpendicular to the teeth of the grindstone 27.

【0013】この状態を維持したままツルア25の位置
は固定する。そして、円筒ウォーム状砥石27を回転さ
せつつ軸Pw方向に移動させる。このとき、ツルア25
は砥石27の回転数より高い回転数で一定方向に回転
し、砥石27の歯面を研削して元の歯形に整形する。そ
して、モータ41(図2に示す)の回転によって、砥石
27をその軸Pw方向に平行移動させる。この砥石27
の移動速度は、砥石27の一回転に対して該砥石27の
ピッチt0 に砥石27の条数を乗じた長さずつ移動する
速さである。そして、砥石27の上端から下端までがツ
ルア25の歯先25aが通過するように砥石27を移動
させる。なお、砥石27の条数が複数の場合には、ツル
ア25を砥石27の上端から下端まで移動させる動作を
各条毎に行って、各条毎にツルア25による整形を行
う。
The position of the truer 25 is fixed while maintaining this state. Then, the cylindrical worm-shaped grindstone 27 is moved in the axis Pw direction while being rotated. At this time, Tsurua 25
Rotates in a certain direction at a rotational speed higher than the rotational speed of the grindstone 27, and grinds the tooth surface of the grindstone 27 to shape the original tooth profile. Then, by rotating the motor 41 (shown in FIG. 2), the grindstone 27 is translated in the direction of the axis Pw. This whetstone 27
The moving speed of is a speed at which the pitch t0 of the grindstone 27 is multiplied by the number of threads of the grindstone 27 per one rotation of the grindstone 27. Then, the grindstone 27 is moved so that the tooth tips 25a of the truer 25 pass from the upper end to the lower end of the grindstone 27. In addition, when the number of rows of the grindstone 27 is plural, the operation of moving the truer 25 from the upper end to the lower end of the grindstone 27 is performed for each row, and the shaping by the truer 25 is performed for each row.

【0014】このように、本実施例の方法においては、
砥石の軸Pwがツルアの軸Ptに対してねじれ角γだけ
傾いていることにより、砥石27のピッチ径dに対して
相関関係を有する軸直角圧力角αnを考慮しなくても良
くなる。すなわち、図4に示すようにツルアの軸Ptが
砥石27の歯直角方向に一致しているから、ツルアの歯
先25aのテーパ角はこの歯直角圧力角に等しくしてお
けば良いことになる。この歯直角圧力角は、ピッチt0
が一定であれば砥石の径の大小に拘らず一定であるか
ら、砥石27の径が変わって軸直角圧力角αnが変化し
ても、ツルアの先端25aの断面形状は一定で良いこと
になる。但し、砥石27のピッチt0 が変更されたとき
には、歯直角圧力角が変化するため、変更後の砥石27
に適した形状の歯先25aを有するツルア25と交換す
る。これにより、ツルアの歯先25aは、砥石27の歯
面に対して常に合致した噛合い状態で当接することにな
り、砥石27の歯面を正確に整形することができる。
As described above, in the method of this embodiment,
Since the axis Pw of the grindstone is inclined by the twist angle γ with respect to the axis Pt of the truer, it is not necessary to consider the axis-perpendicular pressure angle αn having a correlation with the pitch diameter d of the grindstone 27. That is, as shown in FIG. 4, the axis Pt of the truer is aligned with the direction perpendicular to the teeth of the grindstone 27. Therefore, the taper angle of the tooth tip 25a of the truer should be equal to the pressure angle perpendicular to the teeth. .. This tooth right angle pressure angle has a pitch t0
Is constant regardless of the diameter of the grindstone 27, the cross-sectional shape of the tip 25a of the truer may be constant even if the diameter of the grindstone 27 changes and the axis-perpendicular pressure angle αn changes. .. However, when the pitch t0 of the grindstone 27 is changed, the pressure angle at right angles to the teeth changes, so the grindstone 27 after the change
Replace with a truer 25 having a tip 25a of a shape suitable for. As a result, the tooth tip 25a of the truer comes into contact with the tooth surface of the grindstone 27 in a constantly meshed state, and the tooth surface of the grindstone 27 can be accurately shaped.

【0015】また、砥石27をその軸Pw方向に移動さ
せることにより、ツルアの歯先25aと砥石の歯溝31
との当接面の中心R(図4に示す)は、砥石の軸Pw上
を、上端点27sから下端点27eまで直線的に相対移
動する。従って、ツルア25の径を通る平面上におい
て、砥石の軸Pwとツルアの軸Ptとの距離は常に中心
距離Lに保持され、砥石27の歯形は正円筒状に整形さ
れる。
By moving the grindstone 27 in the direction of the axis Pw, the tooth tip 25a of the truer and the tooth groove 31 of the grindstone are formed.
The center R (shown in FIG. 4) of the contact surface with and moves linearly relative to the axis Pw of the grindstone from the upper end point 27s to the lower end point 27e. Therefore, on the plane passing through the diameter of the truer 25, the distance between the axis Pw of the grindstone and the axis Pt of the truer is always kept at the center distance L, and the tooth profile of the grindstone 27 is shaped into a regular cylinder.

【0016】なお、上述した実施例は、砥石27と軸P
w方向に移動させたが、ツルア25を軸Pw方向に移動
させても良い。この場合、ツルーイング装置24を軸P
w方向へ動かす駆動装置を設ける必要がある。ここで、
理解を容易にするため、砥石27をツルアの軸Ptに平
行に移動させた場合を想定し、これを比較対象として説
明する。この場合には、砥石の軸Pwが鉛直線Pvに対
してねじれ角γだけ傾斜した状態を維持しつつ、鉛直線
Pv方向に平行移動することになる。このため、図6に
示すように、ある位置でツルアの歯先25aが砥石のあ
る位置の歯底33Aに当接していたとしても、砥石27
を鉛直線Pv方向に移動させることによって、砥石の軸
Pwがツルアの軸Ptに対して相対移動するため、移動
後にツルアの歯先25aに対向する砥石の歯底33Bと
の間に隙間δが生じる。この隙間δは、砥石27の移動
量に比例して増減するため、砥石27の外形が鼓形にな
ってしまう。
In the above embodiment, the grindstone 27 and the shaft P are used.
Although it is moved in the w direction, the truer 25 may be moved in the axis Pw direction. In this case, the truing device 24 is attached to the axis P.
It is necessary to provide a driving device that moves in the w direction. here,
In order to facilitate understanding, it is assumed that the grindstone 27 is moved parallel to the axis Pt of the truer, and this will be described as a comparison target. In this case, the axis Pw of the grindstone is translated in the vertical line Pv direction while maintaining the state in which the axis Pw is inclined by the twist angle γ with respect to the vertical line Pv. Therefore, as shown in FIG. 6, even if the tooth tip 25a of the truer is in contact with the root 33A of the grindstone at a certain position as shown in FIG.
Is moved in the direction of the vertical line Pv, the axis Pw of the grindstone moves relative to the axis Pt of the truer. Therefore, after the movement, a gap δ is formed between the tooth tip 25a of the truer and the root 33B of the grindstone. Occurs. Since the gap δ increases / decreases in proportion to the movement amount of the grindstone 27, the outer shape of the grindstone 27 becomes a drum shape.

【0017】これに対して、本実施例の方法のように、
砥石の軸Pw方向に砥石27を移動させた場合には、前
述したように、ツルアの径を通る平面上において砥石の
軸Pwとツルアの軸Ptとの距離が常に一定であるか
ら、砥石27の外形は正円筒形になり、正確にツルーイ
ングが行える。なお、砥石27の径が変化した場合に
は、砥石のピッチ径dとねじれ角γとが相関関係にある
ことから、ツルーイング時の砥石の軸Pwのツルアの軸
Ptに対する傾斜角を、そのときに使用している砥石2
7のねじれ角γに合せれば良く、これは簡単な調整作業
で行える。また、ツルア25の軸Ptが水平方向を向い
ている場合であっても、このツルアの軸Ptを基準とし
て、前記実施例のような関係となるように砥石27の軸
Pwを傾ければ良いことは言うまでもない。
On the other hand, as in the method of this embodiment,
When the grindstone 27 is moved in the direction of the axis Pw of the grindstone, the distance between the axis Pw of the grindstone and the axis Pt of the truer is always constant on the plane passing through the diameter of the truer, as described above. The outer shape of the is a regular cylinder, which allows true truing. When the diameter of the grindstone 27 changes, the pitch angle d of the grindstone and the twist angle γ have a correlation, and therefore the inclination angle of the axis Pw of the grindstone with respect to the truer axis Pt at the time of truing is Whetstone used for
It suffices to match the twist angle γ of 7 and this can be done by a simple adjustment work. Further, even when the axis Pt of the truer 25 is oriented in the horizontal direction, the axis Pw of the grindstone 27 may be tilted so that the relationship as in the above-described embodiment is obtained with reference to the axis Pt of the truer. Needless to say.

【0018】また、砥石27のドレッシングを行う方法
についても、前記ツルア25に代えて同形状のドレッサ
を用いることによって、前記ツルーイング方法と同様に
して行うことができる。
The method of dressing the grindstone 27 can also be performed in the same manner as the truing method by using a dresser of the same shape instead of the truer 25.

【0019】[0019]

【発明の効果】以上詳細に説明したように、本発明の砥
石の修正方法によれば、修正工具の歯先の断面形状を円
筒ウォーム状砥石の歯の歯直角断面形状に等しくし、前
記円筒ウォーム状砥石の歯直角平面が前記修正工具の軸
を含むように、前記円筒ウォーム状砥石の軸を前記修正
工具の軸を含む一平面に対して平行な平面内において傾
け、この状態を維持しつつ前記円筒ウォーム状砥石の歯
面に前記修正工具の歯先を当接させ、該修正工具に対し
て、前記円筒ウォーム状砥石を該砥石の一回転に対して
該砥石のピッチに条数を乗じた長さずつ該砥石の軸方向
に移動させることによって、円筒ウォーム状砥石の径が
変化してもピッチが一定である場合には、修正工具の交
換や位置若しくは当接角度を調整する必要がなくなり、
作業性が向上するとともに、修正工具を多数種用意する
必要がなく、修正工具に要するコストを削減できる。
As described above in detail, according to the method for correcting a grindstone of the present invention, the cross-sectional shape of the addendum of the correction tool is made equal to the cross-sectional shape of the teeth of the cylindrical worm-shaped grindstone at right angles to each other. The axis of the cylindrical worm-shaped grindstone is tilted in a plane parallel to a plane including the axis of the correction tool so that the plane perpendicular to the teeth of the worm-shaped grindstone includes the axis of the correction tool, and this state is maintained. While the tooth tips of the correction tool are brought into contact with the tooth surface of the cylindrical worm-shaped grindstone, the cylindrical worm-shaped grindstone with respect to the correction tool is provided with the number of threads in the pitch of the grindstone for one rotation of the grindstone. If the pitch is constant even if the diameter of the cylindrical worm-shaped grindstone changes by moving the grindstone in the axial direction by the multiplied length, it is necessary to replace the correction tool and adjust the position or contact angle. Disappears,
The workability is improved, and it is not necessary to prepare many types of correction tools, and the cost required for the correction tools can be reduced.

【0020】また、本発明の方法によれば、円筒ウォー
ム状砥石の径が変化したときには、砥石の軸と修正工具
の軸との傾斜角を調整するのみの簡単な操作で済むた
め、作業性も良好であり、かつ正確な砥石の修正を行う
ことができる。
Further, according to the method of the present invention, when the diameter of the cylindrical worm-shaped grindstone changes, a simple operation of adjusting the tilt angle between the axis of the grindstone and the axis of the correction tool is sufficient. Is also good, and the grindstone can be corrected accurately.

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

【図1】本発明に係る砥石の修正方法を実施するための
歯車研削盤の一例を示す正面図である。
FIG. 1 is a front view showing an example of a gear grinding machine for carrying out a method for correcting a grindstone according to the present invention.

【図2】その側面図である。FIG. 2 is a side view thereof.

【図3】本発明の一実施例の方法を使用する際の同歯車
研削盤の砥石の位置を示す正面図である。
FIG. 3 is a front view showing a position of a grindstone of the gear grinding machine when the method according to the embodiment of the present invention is used.

【図4】同実施例の方法を行っているときのツルアと砥
石の位置関係を示す正面図である。
FIG. 4 is a front view showing a positional relationship between the truer and the grindstone when performing the method of the embodiment.

【図5】図4のA矢視図である。5 is a view on arrow A in FIG. 4. FIG.

【図6】比較例におけるツルアと砥石の横断面図であ
る。
FIG. 6 is a cross-sectional view of a truer and a grindstone in a comparative example.

【図7】ツルアを砥石の軸に対して平行に移動させる方
法におけるツルアと砥石の位置関係を示す側面図であ
る。
FIG. 7 is a side view showing the positional relationship between the truer and the grindstone in the method of moving the truer parallel to the axis of the grindstone.

【符号の説明】[Explanation of symbols]

18…回転台 19…砥石台 24…ツルーイング
装置 25…ツルア 25a…歯先 27…円筒ウォーム状砥石 30…
被研削物 31…歯溝 32…歯先面 Pw…砥石の軸 P
t…ツルアの軸 L…中心距離 t0 …ピッチ
18 ... Rotating table 19 ... Whetstone stand 24 ... Truing device 25 ... Truer 25a ... Tooth tip 27 ... Cylindrical worm-like grindstone 30 ...
Grinding object 31 ... Tooth groove 32 ... Tip surface Pw ... Grindstone axis P
t ... axis of truer L ... center distance t0 ... pitch

───────────────────────────────────────────────────── フロントページの続き (72)発明者 向井 良平 愛知県刈谷市朝日町1丁目1番地 豊田工 機株式会社内 (72)発明者 杉山 和久 愛知県刈谷市朝日町1丁目1番地 豊田工 機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryohei Mukai 1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Kazuhisa Sugiyama 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Within the corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】歯車研削盤の回転主軸に装着されて歯車の
加工を行う円筒ウォーム状砥石の歯面を、該砥石の歯の
歯直角平面による断面形状に等しい断面形状の歯先を有
する円盤状の修正工具によって整形する砥石の修正方法
であって、 前記円筒ウォーム状砥石の歯直角平面が前記修正工具の
軸を含むように、前記円筒ウォーム状砥石の軸を前記修
正工具の軸を含む一平面に対して平行な平面内において
傾け、 この状態を維持しつつ、前記円筒ウォーム状砥石の歯面
に前記修正工具の歯先を当接させ、 該修正工具に対して、前記円筒ウォーム状砥石を、該砥
石の一回転に対して該砥石のピッチに条数を乗じた長さ
ずつ、該砥石の軸方向に移動させることを特徴とする砥
石の修正方法。
1. A disk having a toothed surface of a cylindrical worm-shaped grindstone mounted on a rotating main shaft of a gear grinding machine for machining a gear and having a tooth profile of a cross-sectional shape equal to a cross-sectional shape of a tooth right-angle plane of the grindstone. A method for correcting a grindstone to be shaped by a correction tool, wherein the axis of the cylindrical worm-shaped grindstone includes the axis of the correction tool such that the plane perpendicular to the teeth of the cylindrical worm-shaped grindstone includes the axis of the correction tool. Inclining in a plane parallel to one plane, while maintaining this state, the tooth tip of the correction tool is brought into contact with the tooth surface of the cylindrical worm-shaped grindstone, and the cylindrical worm shape is applied to the correction tool. A method for correcting a grindstone, which comprises moving the grindstone in the axial direction of the grindstone by a length obtained by multiplying the pitch of the grindstone by the number of threads for one rotation of the grindstone.
JP6744692A 1992-03-25 1992-03-25 Dressing method for grinding wheel Pending JPH05269666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6744692A JPH05269666A (en) 1992-03-25 1992-03-25 Dressing method for grinding wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6744692A JPH05269666A (en) 1992-03-25 1992-03-25 Dressing method for grinding wheel

Publications (1)

Publication Number Publication Date
JPH05269666A true JPH05269666A (en) 1993-10-19

Family

ID=13345166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6744692A Pending JPH05269666A (en) 1992-03-25 1992-03-25 Dressing method for grinding wheel

Country Status (1)

Country Link
JP (1) JPH05269666A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000831A1 (en) * 2005-06-27 2007-01-04 A.L.M.T. Corp. Diamond rotary dresser for gear and method for truing and dressing gear processing grinding wheel using the rotary dresser
JP2009142979A (en) * 2007-12-14 2009-07-02 Siltron Inc Truing tool of grinding wheel and its manufacturing method, truing device using the same, method of manufacturing grinding wheel and wafer edge grinding device
JP2018012151A (en) * 2016-07-20 2018-01-25 株式会社ジェイテクト Method for manufacturing worm
KR20180112032A (en) 2016-02-22 2018-10-11 가부시끼가이샤 아라이도 마테리아루 Abrasive tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000831A1 (en) * 2005-06-27 2007-01-04 A.L.M.T. Corp. Diamond rotary dresser for gear and method for truing and dressing gear processing grinding wheel using the rotary dresser
JPWO2007000831A1 (en) * 2005-06-27 2009-01-22 株式会社アライドマテリアル Diamond rotary dresser for gears and truing and dressing method of gear grinding wheel using the same
JP4781358B2 (en) * 2005-06-27 2011-09-28 株式会社アライドマテリアル Diamond rotary dresser for gears and truing and dressing method of gear grinding wheel using the same
JP2009142979A (en) * 2007-12-14 2009-07-02 Siltron Inc Truing tool of grinding wheel and its manufacturing method, truing device using the same, method of manufacturing grinding wheel and wafer edge grinding device
KR20180112032A (en) 2016-02-22 2018-10-11 가부시끼가이샤 아라이도 마테리아루 Abrasive tool
US11819979B2 (en) 2016-02-22 2023-11-21 A.L.M.T. Corp. Abrasive tool
JP2018012151A (en) * 2016-07-20 2018-01-25 株式会社ジェイテクト Method for manufacturing worm

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