Ø38 mm(Ø1.5インチ)ダンパ付きポスト
![](https://www.thorlabs.co.jp/Images/GuideImages/170_VDampedPosts_7.jpg)
- Dynamically Damped Ø1.5" Post Reduces Mechanical Vibrations
- Nickel-Plated Steel with a Matte Finish
- Permanent Mounting Base with Four 1/4" (M6) Counterbores
HeNe Laser in C1503
V-Mount on DP14A Post
Application idea
Four 1/4" (M6) Counterbores for Mounting
DP14A
DP8A
DP10A
DP12A
![](../../images/loading-red.gif)
Please Wait
![DP14A Top Cap](https://www.thorlabs.co.jp/images/TabImages/Damped_Post_A1-200.jpg)
Click to Enlarge
ダンパ付きポストのキャップには型番の刻印とM6タップ穴
特長
- 振動を低減するØ38 mm(Ø1.5インチ)の炭素鋼(1026 DOM)製ポスト
- 標準的なステンレス製ポストに比べて振動エネルギを短い時間で散逸する鉛フリーのダンピングウェイト設計
- 203.2 mm、254.0 mm、304.8 mm、355.6 mmの長さでご用意
- 長寿命のスチール製、ニッケルメッキのマット仕上げ
- 取り外し不可のマウントベースには4つのM6用ザグリ穴
こちらのØ38 mm(Ø1.5インチ)動的ダンピング機構付きポストは、その長さにより振動が起こりやすいスチール製Ø38 mm(Ø1.5インチ)ポストの代わりとしてお使いいただけます。ダンパ付きポストはビームステアリングやイメージングなど、振動を抑えたい用途に適しています。リンギング低減テストを行っており、その結果によると、ダンピング機構付きカーボンスチール製lポストは標準型のポストと比較してリンギング低減時間が大幅に短縮されています。 テスト結果については「リンギング低減テスト」タブをご参照ください。
当社の動的ダンピング機構付きポストは203.2 mm、254.0 mm、304.8 mm、355.6 mmの4つの長さでご提供しており、ニッケルメッキのマット仕上げ加工されたスチール製で、内部に鉛フリーのダンピングウェイトを使用しています。 パッシブ型振動減衰設計となっています。 内部のサスペンション装置により、ポストの中のウェイトがポスト本体とは別に動くので、振動エネルギが素早く吸収され、消散します。 取り外しが不可能なマウントベースにはM6ザグリ穴が4つあり、それらの間隔は、中心間距離が25.0 mmで開いているタップ穴付きブレッドボードに固定できるように設定されています。 上部のキャップには、識別しやすいよう型番が刻印されています。 またこのポストにはM6タップ穴も付いており、ポストに部品を固定できるようになっています。
Item # | DP8A(/M) | DP10A(/M) | DP12A(/M) | DP14A(/M) |
---|---|---|---|---|
Damping Timea | 20 ms | 47 ms | 61 ms | 73 ms |
Resonant Frequency (Theoretical) | 780 Hz | 435 Hz | 300 Hz | ~200 Hz |
Length | 8" (203.2 mm) | 10" (254.0 mm) | 12" (304.8 mm) | 14" (355.6 mm) |
Weight | 1.56 kg (3.44 lbs) | 1.91 kg (4.21 lbs) | 2.14 kg (4.72 lbs) | 2.4 kg (5.3 lbs) |
Top-Located Tapped Hole | 1/4"-20 (M6); 0.33" (8.4 mm) Deep | |||
Mounting | Permanent Base with Four 1/4" (M6) Counterbores for Breadboards with 1.00" (25.0 mm) Hole Spacing |
![](https://www.thorlabs.co.jp/images/tabimages/Ring_Down_DP10A_A1-150.jpg)
Click to Enlarge
ダンパ付きポストDP10Aのリンギング低減テストを行うためのセットアップ
リンギング低減テスト
リンギング低減テストでは、当社のダンパ付きØ38 mm(Ø1.5インチ)ポストと標準的な同サイズのポストについて、それぞれが最小の振動レベルにまでダンピングするのに要する時間を計測しています。このテストで用いた装置(右写真参照)は、先端にスチール製のボールが付いたレバーアームをリリースして、対象となるポストに約13 Nの力(フォースゲージでピーク値を測定)で衝撃を与えるように設計されています。レバーアームは、事前に決めた高さにピンを用いて固定します。ピエゾ型加速度計を試験用ポスト上部のレバーアームが衝撃を与える高さに取り付け、ポストの振動による加速度を電圧信号として計測・記録します。ポストに負荷を搭載すると振動のダンピング機能が高まるため、テスト中はその他の負荷は搭載していません。したがって、下表に示した結果は振動ダンピング機能の最悪値となっています。
下表のテスト結果では、標準的なポストとダンパ付きポスト両方をテストし、それぞれのダンピング時間(振動振幅の99%を散逸させるのに要する時間)を比較しています。全ての長さのポストにおいて、ダンパ付きポストは標準的なポストに比べて振動エネルギを非常に短い時間で散逸させています。 製品ごとのテスト結果の詳細は下記のグラフをご覧ください。
Ring Down Test Summary (Average Over 5 Tests) | ||
---|---|---|
Post Length | Damping Time (Damped Posts)a | Damping Time (Standard Posts)a |
8" (203.2 mm) | 20 ms | 81 ms |
10" (254.0 mm) | 47 ms | 124 ms |
12" (304.8 mm) | 61 ms | 144 ms |
14" (355.6 mm) | 73 ms | 155 ms |
ポスト長さ8インチ(203.2 mm)
ポスト長さ10インチ(254.0 mm)
ポスト長さ12インチ(304.8 mm)
ポスト長さ14インチ(355.6 mm)
![DP14A SmartPack Packaging](https://www.thorlabs.co.jp/images/TabImages/DP14A-SmartPack_200-W_0513.gif)
Click to Enlarge
DP14A Packaging
![Smart Pack](https://www.thorlabs.co.jp/images/TabImages/SmartPackLogo_A1.jpg)
Smart Pack Goals
- Reduce Weight of Packaging
- Increase Usage of Recyclable Materials
- Improve Packing Integrity
- Decrease Shipping Costs
Thorlabs' Smart Pack Initiative is aimed at minimizing waste while providing adequate protection for our products. By eliminating any unnecessary packaging, implementing design changes, and utilizing eco-friendly materials, this initiative seeks to reduce the environmental impact of our
product packaging.
The updated packaging for the products on this page primarily consists of recycled paper products and weighs 66% less than the original packaging. This weight change results in a 74% reduction in travel-based CO2 emissions per year, based on typical product sales.
As we move through our product line, we will indicate re-engineered, eco-friendly packaging with our Smart Pack logo, which can be seen above
Posted Comments: | |
user
 (posted 2023-09-12 16:12:37.04) Can this post be fixed on a breadboard using the standard 1.5" clamping fork? jdelia
 (posted 2023-09-13 08:15:33.0) Thank you for contacting Thorlabs. The DP- series damped posts would not be compatible with a standard 1.5" clamping fork since the base of the posts is 2.85" in diameter and the 1.5" forks are intended for pedestal bases 1.85" in diameter. We suggest mounting the damped posts on a breadboard by using cap screws with the four 1/4"-20 (M6) counterbored holes on the bottom. Cang Zhao
 (posted 2023-07-12 00:44:26.003) What is the load capacity? jdelia
 (posted 2023-07-14 01:18:28.0) Thank you for contacting Thorlabs. We unfortunately have not conducted load capacity tests for our damped posts. We have reached out to you directly to discuss your application further. Michelle Wu
 (posted 2022-10-17 15:23:32.787) Hello, I'm wondering if you have vibration-damping posts that are shorter. It would be nice if you have one that is 6 or 7 inches tall. If not would you be able to quickly make one?
Thanks jdelia
 (posted 2022-10-19 09:11:14.0) Thank you for contacting Thorlabs. We unfortunately do not offer shorter versions of these posts as stock items. I have reached out to you directly regarding the possibility of providing custom-length damped posts. user
 (posted 2019-06-13 13:06:56.7) Is it possible to add to the DP14A/M an extension post of 50mm on top (P50/M)? YLohia
 (posted 2019-06-13 04:11:22.0) Hello, since both have M6 threads, the P50/M can be added to the DP14A/M using an M6 setscrew. michael.rappaport
 (posted 2017-11-15 22:43:21.883) The 1.5" dia. damped posts are described as follows:
---------------------------------
Ø1.5" Stainless Steel Posts Designed to Reduce Vibrations
Lead-Free Damping Weight Design for Shorter Damping Times Compared to Solid Stainless Steel Posts
8", 10", 12", and 14" Long Versions Available
Nickel-Plated Steel with Matte Finish for Long Life
----------------------------------
Why Ni-plate stainless steel? Are they really stainless steel and if so, what type?
Thank you. nbayconich
 (posted 2017-12-14 10:27:49.0) Thank you for contacting Thorlabs. These posts are actually made of carbon steel 1026 DOM not stainless steel. The nickel plating is meant to prevent corrosion of the steel. We will update our webpage to display the correct steel used in these parts. jjean
 (posted 2017-04-02 16:00:51.247) Would it be possible to provide a custom version of the DP8A post with mirror finish instead of matte finish? Thanks! tfrisch
 (posted 2017-04-18 04:45:48.0) Hello, I will reach out to you directly about your application. I would not recommend using a post as an optical mirror. stump
 (posted 2015-11-23 12:53:48.407) I was thinking of mounting a solid aluminum breadboard on top of 4 DP8A's instead of the standard 1.5 inch posts but wondered if I would still get the desired damping? The measurements (and pictures showing various uses) all use post mounts anchored along the cylinder--not sitting on top. Thank you. besembeson
 (posted 2015-11-25 02:31:41.0) Response from Bweh at Thorlabs USA: In the configuration you describe, the posts will be locked both at the top and the bottom which presents a more complex rigid system than the configuration we have tested for damping times we show on the website. It would seem you might gain little by using the damped posts in this manner but overall it will be a coupled system that we don't have damping time data for. The resonant frequency will also depend on the size/weight of the breadboard and setup that you have. In our tests, the top end of the posts are free standing. urbancic
 (posted 2015-09-17 12:20:56.087) Dear Sir or Madam,
I'm interested in the Ø1.5" Damped Posts but I was wondering if is possible to get them other custom lengths.
Best regards,
Jurij besembeson
 (posted 2015-10-05 01:18:15.0) Response from Bweh at Thorlabs USA: Yes we can provide this. We will follow-up with you. john.chiaverini
 (posted 2014-04-24 09:26:19.37) What are the masses (or weights on earth) of the DP8A and the DP14A?
Thanks.
John C. bsanii
 (posted 2013-11-22 11:17:54.79) We bought the DP14A as a replacement for the DP14, because the base was welded on. Unfortunately we missed that you also removed the 1/4-20 thread on the top of the post, which we need. A couple questions:
Can we tap the top of the DP14A, or will that release sand or the like?
Alternatively, any strategies for keeping the base attached to the post on the DP14? I was about to buy some locktite.
Thanks,
Babak cdaly
 (posted 2013-12-04 01:54:46.0) Response from Chris at Thorlabs: Thank you for your inquiry. There's no reason you cannot tap the bottom of the DP14A. As long as you do not go further than an inch in depth, you will not even make it through the base plate piece. We can provide a custom version of the DP14A with a tap on the top if you would like though. If you would like to epoxy the base on the DP14, I would suggest Loctite 2760. tcohen
 (posted 2012-07-03 10:10:00.0) Response from Tim at Thorlabs: These posts are sealed with Loctite 2760 on the threads. I have contacted you to further discuss the suitability of this post. jonathan.newport
 (posted 2012-06-27 15:32:10.0) Are these posts sealed sufficiently to operate in vacuum at ~10^-6 torr? Thanks! tcohen
 (posted 2012-05-22 10:25:00.0) Response from Tim at Thorlabs: Thank you for your feedback! We are testing this and will provide you with an answer shortly. user
 (posted 2012-05-16 16:25:01.0) What is the first natural frequency of vibration for the damped post DP14? |