如何實現(xiàn)線形彈簧與氮氣彈簧的轉(zhuǎn)換
發(fā)表時間：2018-09-04 11:45瀏覽量：
1. 首先決定壓力需求
在轉(zhuǎn)換的過程中，第一步是要知道現(xiàn)有的模具所需的壓力要求，如果您知道完成操作的所需壓力，可直接采用相應(yīng)噸位的氮氣彈簧。
如果您不知道您所需總的壓力，可通過計算模具中原有線形彈簧所提供的總壓力求出。同時，您必須要清楚所需壓力是初始壓力（預(yù)壓）
還是最終壓力（滿沖程），一旦知道了這些，您可得到您所需總的壓力需求。
找出線形彈簧壓力的最常用的辦法是查閱制造商的產(chǎn)品壓力圖表，通過圖表，您可知道模具中線形彈簧的規(guī)格，顏色，預(yù)壓和沖程，
也可使用測壓計來得出彈簧的壓力。
當您得出模具中一只線形彈簧的壓力，乘以彈簧的數(shù)量， 也可得到總的壓力。
Example: Ten .75"(19 mm) x 5" (127 mm) diameter coil springs each provide 80 lbs.
(.3 kN) of initial force when preloaded .75"
(19 mm). Total Initial Force = 80 lbs. (.36 kN) x 10 = 800 lbs. (3.6 kN) of force
2. 計算氮氣彈簧數(shù)量
首先，氮氣彈簧的直徑要與線形彈簧的直徑相符，氮氣彈簧提供了所有與常用的線形彈簧相匹配的直徑：從 .75" (19 mm) 到 2" (51 mm) ，
當需要決定所需的氮氣彈簧的數(shù)量時，可用相同直徑壓力最大的氮氣彈簧的壓力除以所需總的壓力即可。通常情況下，很少要求彈簧提供的壓力與所需壓力相同。但是，請記住，所提供的壓力要在墊板上均勻分布，在設(shè)計時，
您可采用較多具有較低壓力的彈簧在模具中實現(xiàn)這個要求。
Example: A .75" (19mm) diameter gas spring is available in a 200 lbs. (.9 kN) force model. Divide total force required by gas spring force to determine gas spring quantity. Quantity = 800 lbs. (3.6 kN) ÷ 200 lbs. (.9 kN) = 4 If necessary to balance pressure in your application, you may choose a lower force model and increase the number of gas springs.
3. Select Gas Spring Stroke Length
The final factor to consider when selecting the gas spring is the stroke length. To choose the right gas spring stroke length, first determine the distance the coil spring travels in the die. Add a minimum of 10% to the coil spring travel and choose the gas spring stroke length that is equal to or greater than this number.
Example: In our example, the coil spring measures 5" (127 mm) free length, is preloaded .75" (19 mm) and is traveled .75" (19 mm) in the die. Add 10% to coil spring travel to determine minimum gas spring stroke length. Minimum stroke length = .75" (19 mm) + (.75" (19 mm) x 10%) = .825" (21 mm).
Once you have determined the minimum gas spring stroke length you can then select the particular stroke length that is best suited to your space requirements. For example, if your application requires that you preload the gas spring, select a stroke length that is greater than the minimum length to allow for preload. When possible, select the stroke length so that the OAL of the gas spring is as close as possible to OAL of the preloaded coil spring.
Example: The coil spring is preloaded .75" (19 mm) to meet the force requirements. Its OAL at preload is 4.25" (108 mm). In this example you could select the gas spring with a .98" (25 mm) stroke. This spring would have a corresponding OAL of 3.62" (92 mm). Alternatively, you may select a longer stroke and preload the gas spring to meet your space constraints. In our example, a spring with a stroke length of 1.5" (38 mm) and an OAL of 4.65 (118 mm) could be selected and preloaded .40" (10 mm).
4. 安裝氮氣彈簧
In most applications the nitrogen gas spring can be easily installed in the same cored pocket used for the coil spring. Simply ensure that the bottom of the pocket is flat and that the sides of the hole are square to the pressure pad. The pocket depth should be a minimum of 50% of the length of the gas spring can or 1.25" (32mm), whichever is greater. The pressure pad should have a smooth area for the gas spring rod to contact and should remain in contact with the rod throughout the stroke. In some applications you can take advantage of gas spring mounting options, such as attachable flange mounts, tapped hole(s) in the base of the cylinder, and threaded body styles. These options offer increased flexibility for using nitrogen gas springs in existing dies.
When the size of the gas spring selected does not match the coil spring being replaced there are simple steps that can be taken before installing the gas spring. Spacers or sleeves may be used in the pocket if the gas spring is smaller than the coil spring, or the gas spring may be flange mounted in the appropriate position. If the existing pocket is too shallow it may be cored deeper, if possible, or the gas spring may be preloaded to meet space requirements. When coring a pocket for gas spring installation, maintain a clearance of .02 to .04 in. (.5 to 1.0 mm) to the diameter of the gas spring.
One final concern when installing the gas spring is the use of fluids in the die. Direct contact with certain die lubricants, coolants and cleaners can be harmful to gas springs and should be avoided. Shield gas springs from harmful fluids and provide adequate drainage in gas spring pockets.
在轉(zhuǎn)換的過程中，第一步是要知道現(xiàn)有的模具所需的壓力要求，如果您知道完成操作的所需壓力，可直接采用相應(yīng)噸位的氮氣彈簧。
如果您不知道您所需總的壓力，可通過計算模具中原有線形彈簧所提供的總壓力求出。同時，您必須要清楚所需壓力是初始壓力（預(yù)壓）
還是最終壓力（滿沖程），一旦知道了這些，您可得到您所需總的壓力需求。
找出線形彈簧壓力的最常用的辦法是查閱制造商的產(chǎn)品壓力圖表，通過圖表，您可知道模具中線形彈簧的規(guī)格，顏色，預(yù)壓和沖程，
也可使用測壓計來得出彈簧的壓力。
當您得出模具中一只線形彈簧的壓力，乘以彈簧的數(shù)量， 也可得到總的壓力。
Example: Ten .75"(19 mm) x 5" (127 mm) diameter coil springs each provide 80 lbs.
(.3 kN) of initial force when preloaded .75"
(19 mm). Total Initial Force = 80 lbs. (.36 kN) x 10 = 800 lbs. (3.6 kN) of force
2. 計算氮氣彈簧數(shù)量
首先，氮氣彈簧的直徑要與線形彈簧的直徑相符，氮氣彈簧提供了所有與常用的線形彈簧相匹配的直徑：從 .75" (19 mm) 到 2" (51 mm) ，
當需要決定所需的氮氣彈簧的數(shù)量時，可用相同直徑壓力最大的氮氣彈簧的壓力除以所需總的壓力即可。通常情況下，很少要求彈簧提供的壓力與所需壓力相同。但是，請記住，所提供的壓力要在墊板上均勻分布，在設(shè)計時，
您可采用較多具有較低壓力的彈簧在模具中實現(xiàn)這個要求。
Example: A .75" (19mm) diameter gas spring is available in a 200 lbs. (.9 kN) force model. Divide total force required by gas spring force to determine gas spring quantity. Quantity = 800 lbs. (3.6 kN) ÷ 200 lbs. (.9 kN) = 4 If necessary to balance pressure in your application, you may choose a lower force model and increase the number of gas springs.
3. Select Gas Spring Stroke Length
The final factor to consider when selecting the gas spring is the stroke length. To choose the right gas spring stroke length, first determine the distance the coil spring travels in the die. Add a minimum of 10% to the coil spring travel and choose the gas spring stroke length that is equal to or greater than this number.
Example: In our example, the coil spring measures 5" (127 mm) free length, is preloaded .75" (19 mm) and is traveled .75" (19 mm) in the die. Add 10% to coil spring travel to determine minimum gas spring stroke length. Minimum stroke length = .75" (19 mm) + (.75" (19 mm) x 10%) = .825" (21 mm).
Once you have determined the minimum gas spring stroke length you can then select the particular stroke length that is best suited to your space requirements. For example, if your application requires that you preload the gas spring, select a stroke length that is greater than the minimum length to allow for preload. When possible, select the stroke length so that the OAL of the gas spring is as close as possible to OAL of the preloaded coil spring.
Example: The coil spring is preloaded .75" (19 mm) to meet the force requirements. Its OAL at preload is 4.25" (108 mm). In this example you could select the gas spring with a .98" (25 mm) stroke. This spring would have a corresponding OAL of 3.62" (92 mm). Alternatively, you may select a longer stroke and preload the gas spring to meet your space constraints. In our example, a spring with a stroke length of 1.5" (38 mm) and an OAL of 4.65 (118 mm) could be selected and preloaded .40" (10 mm).
4. 安裝氮氣彈簧
In most applications the nitrogen gas spring can be easily installed in the same cored pocket used for the coil spring. Simply ensure that the bottom of the pocket is flat and that the sides of the hole are square to the pressure pad. The pocket depth should be a minimum of 50% of the length of the gas spring can or 1.25" (32mm), whichever is greater. The pressure pad should have a smooth area for the gas spring rod to contact and should remain in contact with the rod throughout the stroke. In some applications you can take advantage of gas spring mounting options, such as attachable flange mounts, tapped hole(s) in the base of the cylinder, and threaded body styles. These options offer increased flexibility for using nitrogen gas springs in existing dies.
When the size of the gas spring selected does not match the coil spring being replaced there are simple steps that can be taken before installing the gas spring. Spacers or sleeves may be used in the pocket if the gas spring is smaller than the coil spring, or the gas spring may be flange mounted in the appropriate position. If the existing pocket is too shallow it may be cored deeper, if possible, or the gas spring may be preloaded to meet space requirements. When coring a pocket for gas spring installation, maintain a clearance of .02 to .04 in. (.5 to 1.0 mm) to the diameter of the gas spring.
One final concern when installing the gas spring is the use of fluids in the die. Direct contact with certain die lubricants, coolants and cleaners can be harmful to gas springs and should be avoided. Shield gas springs from harmful fluids and provide adequate drainage in gas spring pockets.
- 蘇州斯托爾克精密機械有限公司 版權(quán)所有 Copyright 2015 技術(shù)支持：樂搜科技
- 聯(lián)系電話：18136070685;傳真：+086 0512-66718353;郵箱：[email protected]
- *本站相關(guān)網(wǎng)頁素材及相關(guān)資源均來自互聯(lián)網(wǎng)，如有侵權(quán)請速告知，我們將會在24小時內(nèi)刪除*
- 《中華人民共和國電信與信息服務(wù)業(yè)務(wù)經(jīng)營許可證》備案號：蘇ICP備14007014號-1
掃一掃二維碼
聯(lián)系我們：
