Products Home手動型差動アジャスター、移動量18 mm
- Lockable Coarse Adjustment:
Range: 0.72" (18.3 mm)
Pitch: 0.012" (300 µm) per Revolution - Fine Adjustment:
Range: 0.01" (250 µm)
Pitch: 0.001" (25 µm) per Revolution
Application Idea
Our ST1XY-D Translation Stage
Incorporates a DM22 Micrometer
DM22
Please Wait
特長
- 微調整範囲: 250 µm
- 微調整: 25 µm / 回転
- 粗調整範囲: 18 mm(0.72インチ)、1/4”-80ネジ
- 粗調整: 0.3 mm(0.012インチ)/ 回転(80TPI)
- 軸上の耐荷重: 5 kg
差動アジャスタDM22では、調整に2つの内親ネジを使用しています。中心スピンドルを1回転につき400 μm前方へ進ませる親ネジと、中心スピンドルを1回転につき375 μm後退させる親ネジの2種類です。目盛付ノブを1回転させると結果的に中心スピンドルは25 μm前方に移動します。微調整ノブには、0.5 µm単位の目盛が付いています。DM22の最小移動単位は、約50 nmです。微調整を行なう際に、粗調整機構は小さな固定カラーを使ってロックすることができます。差動アジャスタ内で使用している機構についての詳細は「DM22の動作」タブをご参照ください。
取り付ける前にアジャスタに軽くグリースを塗布してください。アジャスタを取り付ける際にはネジを手でブッシュにねじ込んでください。ネジが斜めに入ると、アジャスタとブッシュが損傷する可能性があるのでご注意ください。
DM22の微調整ノブはアクチュエータ本体から1度取り外しても、再度取り付けることができます。詳細は「DM22のノブの取付け」タブをご参照ください。アクチュエータを適切に機能させるために、再取付けの手順は必ずお守りください。
差動アジャスタに微調整ノブを再度取り付ける方法
- ステップ1：外れたノブを完全に取り外します。
- ステップ2：アクチュエータの先端を押します。
- ステップ3：押しながらノブをねじ込み2～3回転させます。
- ステップ4：ノブが取り付けられたらアクチュエータの先端を押すのを止め、引き続きノブをゆっくりとねじ込みます。ねじ込みはゆっくりと、あまり力をかけずに行ってください。力をかけすぎるとななめ止めになり、ネジが損傷する場合があります。
差動アジャスタの動作機構
差動アジャスタは、本体、粗調整ロック、内部スピンドルならびに微調整ノブの4つの基本部品で構成されています。左の動画では、これら4つの基本部品を組み立ててデバイスを完成させ、粗調整ならびに微調整を行う方法をご紹介しております。また、アクチュエータをアセンブリに取り付ける方法も2通り説明しています。
差動アジャスタの機構
- 本体：
- 粗調整が可能
- 内部スピンドルの外ネジよりもピッチが小さい内ネジ付き
- 粗調整ロック：
- 粗動アクチュエータが回転するのを防ぎ、粗移動をロック
- 微調整可能
- 内部スピンドル：
- 本体内部に取り付け
- 移動プラットフォームに接触し、粗調整ネジで移動
- 本体の内ネジよりもピッチが大きい外ネジ付き
- 微調整ノブ：
- 内ネジならびに外ネジは内部スピンドルおよび本体のネジに一致
- ノブを回転させると、内部スピンドルは2つのネジピッチの差分だけ移動
| Posted Comments: | |
user
(posted 2021-05-05 05:56:27.667) Hi!
1. Shouldn't the DDM2 be able to withstand higher loads considering that each of the two interna threads probably can withstand 5-10x the stated maximum load without damage?
2. I suppose that the fine adjustment is self locking due to it's fine pitch but is there some way of adding security to this for installations that need very long term stability and may have some slight vibrations? cdolbashian
(posted 2021-09-10 10:51:51.0) Thank you for reaching out to us Magnus!
1. You are indeed correct that the screw threads would be able to support more load than we spec. We spec this as a max load to maintain the fine adjustment sensitivity and a smooth motion over the full range of travel.
2. The locking mechanism which would be implemented would actually interfere with the micron-accuracy positioning, so in this case it was not included, as the act of locking would disturb a finely achieved position. Michael Van de Graaff
(posted 2019-09-25 20:05:12.07) You should probably put a link to this product DM22 on other pages, like for example: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1811
I spent a while looking for this exact product (which i didn't know for sure even existed, i only assumed) before I gave up and bought something that would get the job done from one of your competitors.
then I found this exact product in the bottom of my micrometer drawer and realized it would fit into my platform mount. so yeah, this product is a perfect quick solution for anywhere a 1/4"-80 normal adjustment screw isn't good enough YLohia
(posted 2019-09-27 12:40:32.0) Hello, thank you for your feedback. We looked into the search keywords for the DM22 and found that to be lacking, so we have updated our search engine directory and will look into cross-linking these in the future. Alexander.Zolot
(posted 2017-11-07 18:06:01.457) Regarding DM22: Is there a version of this product that is compatible with the 1/4"-100 threads in the Polaris-series mounts? (Is this item compatible with that in some way that is unclear from website details?) nbayconich
(posted 2017-11-15 08:19:22.0) Thank you for contacting Thorlabs. We have not yet designed a 1/4"-100 threaded version of this differential adjuster but we can look into providing a custom version for our POLARIS series mounts. I will reach out to you directly with more information about our custom capabilities. djarami
(posted 2015-03-06 13:17:04.577) I need a little more information on the DM22 part or ones similar to it. I would like to see a video on how to install it, use it, etc. I really do like all the different CAD models available for your parts! It helps to design the other parts it will work with. cdaly
(posted 2015-03-11 12:17:32.0) Response from Chris at Thorlabs: The differential micrometer DM22 must be mounted to some other item by its outer 1/4"-80 threading. This threading provides the course adjustment of the micrometer, which is moved by turning the knurled surface just inside of the rear knob. The course adjustment is locked by threading down the locking nut/collar against the item to which the DM22 is mounted. Inside this now fixed, 1/4"-80 threaded main body, which I will call the outer spindle, is an inner spindle which is able to slide axially within, but is unable to rotate. Both the inner spindle and outer spindle are threaded to the rear knob via two different threads with different pitches. When the knob is rotated, It will translate relative to the fixed outer spindle, via a 400 um/rev thread, while the inner spindle translate relative to the knob via a 375 um/rev thread, resulting in a translation of the inner spindle relative to the fixed outer spindle of 25 um/rev. isaac.theurkauff
(posted 2014-02-24 17:05:14.91) Hello.
After unscrewing beyond the limit, the screw is now blocked, and I am unable to scre it back. What should I do?
Thanks. jlow
(posted 2014-02-28 11:19:50.0) Response from Jeremy at Thorlabs: You have to screw this back on very carefully. Do not force it in because that can destroy the threads. I will contact you directly on putting this back on. tcohen
(posted 2012-05-24 15:28:00.0) Response from Tim at Thorlabs: The rated axial (push) torque for the DM22 is < 11ft-lbs (15Nm) before the threads corrupt. tesar
(posted 2012-05-24 10:27:17.0) What is the on-axis load capacity of the DM22 Differential Adjuster? jjurado
(posted 2011-08-29 13:49:00.0) Response from Javier at Thorlabs to jdthomps: Thank you very much for your feedback. As a differential adjuster, the DM22 was not designed to include markings on the fine adjustment knob for absolute position measurement. I will contact you directly to help you find an alternative solution. jdthomps
(posted 2011-08-22 17:37:32.0) This actuator would be much more useful with a graduated scale on the fine adjustment, which would allow you to know the absolute position instead of the position modulo 1 turn. |
差動マイクロメータヘッド、移動量18 mm