JP4535540B2 - Gear cutting method of wave gear device - Google Patents
Gear cutting method of wave gear device Download PDFInfo
- Publication number
- JP4535540B2 JP4535540B2 JP36592699A JP36592699A JP4535540B2 JP 4535540 B2 JP4535540 B2 JP 4535540B2 JP 36592699 A JP36592699 A JP 36592699A JP 36592699 A JP36592699 A JP 36592699A JP 4535540 B2 JP4535540 B2 JP 4535540B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- wave
- gear device
- wave gear
- cutting
- 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.)
- Expired - Lifetime
Links
Images
Description
【０００１】
【発明の属する技術分野】
本発明は、波動歯車装置を構成している歯車を精度良く製作できる波動歯車装置の歯切り加工方法に関するものである。
【０００２】
【従来の技術および解決しようとする課題】
歯切り盤の主軸やテーブルは、ウォーム歯車や平歯車を備えた伝達機構を介して駆動モータにより回転駆動されるので、加工された歯車の回転精度は主に、伝達機構を構成しているウォーム歯車や平歯車の精度により左右される。従って、高精度に歯切り加工を行うためには、高精度のウォーム歯車や平歯車を歯切り盤に採用する必要がある。しかし、使用する歯車の高精度化には限界があり、また、高精度の歯車は高価である。
【０００３】
ここで、減速歯車装置としては波動歯車装置が知られており、この波動歯車装置は、環状の剛性内歯歯車と、環状の可撓性外歯歯車と、この内側に嵌め込まれた剛性の波動発生器から基本的に構成されている。波動発生器は一般に楕円形輪郭をしており、この波動発生器によって可撓性外歯歯車は楕円形に撓められて、その楕円形の長軸の両端位置において剛性内歯歯車にかみ合った状態になる。波動発生器をモータ等により回転させると、両歯車のかみ合い位置も円周方向に移動する。
【０００４】
可撓性外歯歯車の歯数は、剛性内歯歯車よりも２ｎ（ｎは正の整数）、一般には２枚少なく設定されているので、かみ合い位置の移動に伴って、両歯車には相対回転が発生する。よって、一方の歯車を回転しないように固定しておけば、歯数差に応じて大幅に減速された減速回転出力を他方の歯車から取出すことができる。かかる波動歯車装置の構成、減速原理は公知であるので、これ以上の説明は省略する。
【０００５】
この波動歯車装置に使用されている剛性内歯歯車および可撓性外歯歯車は、一般にかみ合い歯数が多いので、高精度の歯切り加工が要求される。剛性内歯歯車の歯切り加工にはギヤシェーパが使用され、可撓性外歯歯車の歯切り加工にはホブマシンが使用されている。これらの歯切り加工においても、歯切り盤に使用されている歯車の精度以上の精度で内歯歯車、外歯歯車を製作できない。
【０００６】
本発明の課題は、コスト高を招くことなく歯切り加工を高精度で行うことができ、特に、かみ合い歯数の多い波動歯車装置の剛性内歯歯車および可撓性外歯歯車を製作するのに適した波動歯車装置の歯切り加工方法を提案することにある。
【０００７】
【課題を解決するための手段】
上記の課題を解決するために、本発明の波動歯車装置の歯切り加工方法は、
歯切り盤として、回転駆動源と、主軸、テーブルなどの回転部と、この回転部に対して前記回転駆動源から回転力を伝達する伝達機構とを有し、この伝達機構が減速歯車機構として角度伝達誤差が１６秒の第１波動歯車装置を備えているものを用意し、
当該歯切り盤を用いて、第２波動歯車装置の構成部品である剛性内歯歯車および可撓性外歯歯車の歯切り加工を行い、
前記歯切り盤における前記第１波動歯車装置の代わりに前記第２波動歯車装置を当該歯切り盤に組み込み、
前記第２波動歯車装置が組み込まれた前記歯切り盤を用いて、製作対象の波動歯車装置の構成部品である剛性内歯歯車および可撓性外歯歯車の歯切り加工を行うことを特徴としている。
【０００８】
詳細に説明すると、波動歯車装置は、その剛性内歯歯車と可撓性外歯歯車のかみ合い歯数が多く、また、楕円形の長軸両端の２個所でかみ合うので、歯車装置としての角度伝達誤差は歯車の偶数成分の累積ピッチ誤差で決まるという特性を備えている。ここで、波動歯車装置における歯車の累積ピッチ誤差の高周波成分はかみ合い歯数が多いので相殺されるが、低周波成分はそのまま誤差となって現れる。しかしながら、波動歯車装置の特徴として、歯車の累積ピッチ誤差の低周波成分は極めて少ない。このために、波動歯車装置を歯切り盤の伝達機構に使用すれば、高精度の歯切り加工を実現できる。
【０００９】
例えば、ＤＩＮ１級のウォーム歯車を主軸駆動用の伝達機構に使用した歯切り盤を用いて波動歯車装置の剛性内歯歯車を製作したとき、ウォーム歯車の累積ピッチ誤差が剛性内歯歯車に転写されたとする。図１（ａ）は、かかる加工誤差を備えた剛性内歯歯車（Ｃ／Ｓ）が組み込まれた場合における波動歯車装置において予想される角度伝達誤差を示すグラフである。
【００１０】
これに対して、角度伝達誤差が１６秒の一般的な波動歯車装置を、ウォーム歯車の代わりに採用した歯切り盤を用いて、波動歯車装置の剛性内歯歯車を製作したとき、歯切り盤に組み込まれている波動歯車装置の累積ピッチ誤差が製作対象の剛性内歯歯車に転写されたとし、この場合において予想される角度伝達誤差を図１（ｂ）のグラフに示してある。
【００１１】
図１（ａ）、（ｂ）のグラフから分かるように、最高級のウォーム歯車を使用した場合に対して、一般的な波動歯車装置を使用した歯切り盤を用いた場合の方が約３倍よい結果（角度伝達誤差が約１／３に減少）が得られる。
【００１２】
【発明の効果】
以上説明したように、本発明の歯切り盤は、その主軸やテーブル等の回転部の伝達機構に波動歯車装置を採用している。波動歯車装置では、その角度伝達誤差の成分に低周波成分が少なく、また、角度伝達誤差の主成分である高周波成分はかみ合い歯数が多いので相殺される。よって、波動歯車装置の剛性内歯歯車や可撓性外歯歯車のようなかみ合い歯数の多い歯車を製作する場合には、角度伝達誤差に低周波成分が少ない波動歯車装置を用いた本発明の歯切り盤を使用すれば、高精度の歯切り加工を実現できる。
【００１３】
特に、本発明においては、歯切り盤で歯切り加工された剛性内歯歯車および可撓性外歯歯車を備えた波動歯車装置を歯切り盤に組み込むようにしているので、よりよい精度の剛性内歯歯車および可撓性外歯歯車を製作できる。
【図面の簡単な説明】
【図１】（ａ）はウォーム歯車を備えた歯切り盤により製作した歯車が組み込まれた波動歯車装置の角度伝達誤差の予測値を示すグラフであり、（ｂ）は波動歯車装置を備えた歯切り盤により製作した歯車が組み込まれた波動歯車装置の角度伝達誤差の予測値を示すグラフである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gear cutting method for a wave gear device that can accurately manufacture gears constituting the wave gear device .
[0002]
[Prior art and problems to be solved]
Since the main shaft and table of the gear cutter are rotated by a drive motor via a transmission mechanism having a worm gear and a spur gear, the rotational accuracy of the processed gear is mainly the worm constituting the transmission mechanism. It depends on the accuracy of the gears and spur gears. Therefore, in order to perform gear cutting with high accuracy, it is necessary to employ a high-precision worm gear or spur gear for the gear cutting machine. However, there is a limit to increasing the precision of the gears used, and high-precision gears are expensive.
[0003]
Here, a wave gear device is known as a reduction gear device, and the wave gear device includes an annular rigid internal gear, an annular flexible external gear, and a rigid wave gear fitted inside the annular gear. It basically consists of a generator. The wave generator generally has an elliptical outline, and the flexible external gear is bent into an elliptic shape by the wave generator, and meshed with the rigid internal gear at both ends of the major axis of the elliptical shape. It becomes a state. When the wave generator is rotated by a motor or the like, the meshing position of both gears also moves in the circumferential direction.
[0004]
The number of teeth of the flexible external gear is set to 2n (n is a positive integer), and generally two less than that of the rigid internal gear. Rotation occurs. Therefore, if one of the gears is fixed so as not to rotate, the decelerated rotation output greatly reduced according to the difference in the number of teeth can be taken out from the other gear. Since the configuration of the wave gear device and the principle of reduction are well known, further explanation is omitted.
[0005]
Since the rigid internal gear and the flexible external gear used in this wave gear device generally have a large number of meshing teeth, high-precision gear cutting is required. A gear shaper is used for gear cutting of the rigid internal gear, and a hob machine is used for gear cutting of the flexible external gear. Even in these gear cutting processes, internal gears and external gears cannot be manufactured with an accuracy higher than the accuracy of the gears used in the gear cutter.
[0006]
An object of the present invention is that gear cutting can be performed with high accuracy without incurring high costs , and in particular, a rigid internal gear and a flexible external gear of a wave gear device having a large number of meshing teeth are manufactured. It is in proposing the gear cutting method of the wave gear apparatus suitable for.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the gear cutting method of the wave gear device of the present invention,
As a gear cutter, it has a rotary drive source, a rotary part such as a main shaft and a table, and a transmission mechanism that transmits a rotational force from the rotary drive source to the rotary part, and this transmission mechanism serves as a reduction gear mechanism. Prepare one with a first wave gear device with an angular transmission error of 16 seconds,
Using the gear cutter, gear cutting of the rigid internal gear and the flexible external gear, which are components of the second wave gear device,
Incorporating the second wave gear device into the gear wheel instead of the first wave gear device in the gear wheel,
Using the gear wheel in which the second wave gear device is incorporated, gear cutting of a rigid internal gear and a flexible external gear that are components of the wave gear device to be manufactured is performed. Yes.
[0008]
More specifically, the wave gear device has a large number of meshing teeth between the rigid internal gear and the flexible external gear, and meshes at two positions on both ends of the elliptical long axis. The error has a characteristic that it is determined by the cumulative pitch error of the even component of the gear. Here, the high frequency component of the cumulative pitch error of the gear in the wave gear device is offset because of the large number of meshing teeth, but the low frequency component appears as an error as it is. However, as a feature of the wave gear device, the low frequency component of the cumulative pitch error of the gear is extremely small. For this reason, if a wave gear apparatus is used for the transmission mechanism of a gear cutter, highly accurate gear cutting can be realized.
[0009]
For example, when a rigid internal gear of a wave gear device is manufactured using a gear cutter that uses a DIN1 class worm gear as a transmission mechanism for driving a main shaft, the accumulated pitch error of the worm gear is transferred to the rigid internal gear. Suppose. FIG. 1A is a graph showing an angle transmission error expected in a wave gear device when a rigid internal gear (C / S) having such a machining error is incorporated.
[0010]
On the other hand, when a rigid internal gear of a wave gear device is manufactured by using a general gear device having an angular transmission error of 16 seconds instead of a worm gear, The accumulated pitch error of the wave gear device incorporated in the figure is transferred to the rigid internal gear to be manufactured, and the angle transmission error expected in this case is shown in the graph of FIG.
[0011]
As can be seen from the graphs of FIGS. 1 (a) and 1 (b), when using the highest grade worm gear, the case where a gear cutter using a general wave gear device is used is about 3 times. Doubled results (angle transmission error reduced to about 1/3) are obtained.
[0012]
【The invention's effect】
As described above, the gear cutter of the present invention employs a wave gear device as a transmission mechanism for a rotating part such as a main shaft or a table. In the wave gear device, the angle transmission error component has few low frequency components, and the high frequency component, which is the main component of the angle transmission error, has a large number of meshing teeth and is canceled out. Therefore, when a gear having a large number of meshing teeth such as a rigid internal gear or a flexible external gear of a wave gear device is manufactured, the present invention using the wave gear device having a small low frequency component in the angle transmission error. If this gear cutter is used, high-precision gear cutting can be realized.
[0013]
Particularly, in the present invention, since a wave gear device having a toothed machined rigid internal gear and the flexible external gear in gear cutting machine has a built-useless gear cutting machine, a better precision in the stiffness A tooth gear and a flexible external gear can be manufactured.
[Brief description of the drawings]
FIG. 1A is a graph showing a predicted value of an angular transmission error of a wave gear device incorporating a gear manufactured by a gear cutter provided with a worm gear, and FIG. 1B is a graph showing a wave gear device. It is a graph which shows the predicted value of the angle transmission error of the wave gear apparatus with which the gear manufactured with the gear wheel was built.
Claims (1)
当該歯切り盤を用いて、第２波動歯車装置の構成部品である剛性内歯歯車および可撓性外歯歯車の歯切り加工を行い、
前記歯切り盤における前記第１波動歯車装置の代わりに前記第２波動歯車装置を当該歯切り盤に組み込み、
前記第２波動歯車装置が組み込まれた前記歯切り盤を用いて、製作対象の波動歯車装置の構成部品である剛性内歯歯車および可撓性外歯歯車の歯切り加工を行うことを特徴とする波動歯車装置の歯切り加工方法。As a gear cutter, it has a rotary drive source, a rotary part such as a main shaft and a table, and a transmission mechanism that transmits a rotational force from the rotary drive source to the rotary part, and this transmission mechanism serves as a reduction gear mechanism. Prepare one with a first wave gear device with an angular transmission error of 16 seconds,
Using the gear cutter, gear cutting of the rigid internal gear and the flexible external gear, which are components of the second wave gear device,
Incorporating the second wave gear device into the gear wheel instead of the first wave gear device in the gear wheel,
Using the gear cutting machine in which the second wave gear device is incorporated, gear cutting of a rigid internal gear and a flexible external gear that are components of the wave gear device to be manufactured is performed. A gear cutting method for a wave gear device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36592699A JP4535540B2 (en) | 1999-12-24 | 1999-12-24 | Gear cutting method of wave gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36592699A JP4535540B2 (en) | 1999-12-24 | 1999-12-24 | Gear cutting method of wave gear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001179540A JP2001179540A (en) | 2001-07-03 |
| JP4535540B2 true JP4535540B2 (en) | 2010-09-01 |
Family
ID=18485477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36592699A Expired - Lifetime JP4535540B2 (en) | 1999-12-24 | 1999-12-24 | Gear cutting method of wave gear device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4535540B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019468B (en) * | 2010-12-02 | 2012-05-23 | 威海华东数控股份有限公司 | High-precision heavy-duty static pressure numerical control rotary table |
| CN103056456A (en) * | 2011-10-24 | 2013-04-24 | 王乐琳 | Electric bicycle double-circular-arc-tooth-shaped harmonic gear hobbing cutter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61226219A (en) * | 1985-03-30 | 1986-10-08 | Agency Of Ind Science & Technol | Method of cutting tooth of gear for speed increasing and decreasing drive unit |
| JPH0890339A (en) * | 1994-09-22 | 1996-04-09 | Howa Mach Ltd | Compound gear material chamfering device |
-
1999
- 1999-12-24 JP JP36592699A patent/JP4535540B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61226219A (en) * | 1985-03-30 | 1986-10-08 | Agency Of Ind Science & Technol | Method of cutting tooth of gear for speed increasing and decreasing drive unit |
| JPH0890339A (en) * | 1994-09-22 | 1996-04-09 | Howa Mach Ltd | Compound gear material chamfering device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001179540A (en) | 2001-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102617234B1 (en) | Assistance device | |
| EP2003368A9 (en) | Flexible meshing-type gear device and steering device for vehicle | |
| JP4871644B2 (en) | Backlash removing method and apparatus | |
| JPH0378504B2 (en) | ||
| WO2008050658A1 (en) | Backlash eliminator | |
| RU94018522A (en) | Toothed gear precise working method and lathe | |
| JP4477828B2 (en) | Gear forming machine and method of operating gear forming machine | |
| JP4535540B2 (en) | Gear cutting method of wave gear device | |
| KR101456304B1 (en) | Drive device of Rotary table | |
| JPH06257660A (en) | Geared transmission mechanism | |
| JPH0570015B2 (en) | ||
| JPS6275153A (en) | Harmonic driving gear | |
| JP2005094864A (en) | Image forming apparatus | |
| CN108006164A (en) | Planetary-gear speed reducer and the electromechanical integration equipment with the planetary-gear speed reducer | |
| JP2013255344A (en) | Electrically-driven rotary actuator | |
| JPH0641781Y2 (en) | Machine tool spindle | |
| JP2676286B2 (en) | Control device using internally meshing planetary gear reduction mechanism | |
| JPH07204916A (en) | Variable two-spindle milling head | |
| CN1857838B (en) | Bevel gear processing process and apparatus | |
| JPH10151540A (en) | Drive device for rotational drive body | |
| JP4706065B2 (en) | Reduction gear | |
| JPH0586506B2 (en) | ||
| JPS58132416A (en) | Gear shaper | |
| JPS62220748A (en) | Controlling transmission | |
| JPH0972390A (en) | Phase gear system planetary gear device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060817 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091029 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091110 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100104 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100615 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100615 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130625 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4535540 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140625 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |