需要特殊加工?联系Thomson
+/- 0.004 in per ft, 23 microns per 300 mm
法兰滚珠螺母(左旋)和螺纹滚珠螺母(右旋)。
标准滚珠丝杠工作更加平顺。
+/- 0.0005 in per ft
适合Thomson滚珠丝杠组件的安装解决方案。
含一体式法兰。
适用于大多英制螺母的螺纹法兰选件
Compact, suitable for custom mounting.
Adjustable Preload Ball Nut.
驱动端双轴承
支撑端单轴承
法兰底部安装、机加工丝杠、固定型
底部安装、机加工丝杠、固定型
法兰安装、机加工丝杠、固定型
Flange or base mounted, screw is machined, classified fixed
底部安装、机加工丝杠、简易型
法兰安装、机加工丝杠、简单型
Flange or base mounted, screw is machined, classified simple
滚珠丝杠组件是一种将旋转运动转化为直线运动的机械装置,其内部摩擦阻力低,因而可承受高推进负载。加之公差等级高,非常适合高精度的应用。为特定应用选择滚珠丝杆组件时需经反复试配,才能找到外壳紧凑、经济划算的解决方案。以下是选择滚珠丝杠组件时最常用(部分)设计考虑的列表。
在计算滚珠丝杠组件的直径、导程和负载能力前,应至少已知设计负载、线速度和位置精度等输入信息。然后根据使用寿命、规格限制、安装配置和环境条件选择单个滚珠丝杠部件。
运动曲线输出 | 公制 | 英制 |
---|---|---|
最大速度 | ||
加速度 | ||
平均速度 | ||
移动时间 |
末端固定是一种用于支撑滚珠丝杠组件末端的轴承配置。此处展示了3中常见的末端固定配置选项。固定加自由的组合方式支撑较少,而固定加固定的组合方式支撑较多。末端固定可影响丝杠的最大RPM和屈曲负载。
运动曲线分为三个等时间段或等距离段(加速度、恒速、减速度)。更多自定义选项,可查看多分段运动曲线选项。”
末端支撑间距离(丝杠螺纹长度)。
螺母行程距离总长。该距离不一定是总行程长度。
轴向力计算 | 公制 | 英制 |
---|---|---|
最大轴向力 | ||
同等工作负载 | ||
加速度力 | ||
加速距离 | ||
恒速时的力 | ||
恒速时的距离 | ||
减速度力 | ||
减速距离 | ||
摩擦系数 |
默认丝杠的方向与地面平行或垂直于地面。对于其他方向以及定制的丝杠,可选择自定义,输入从水平方向测得的角度。
负载由导轨支撑。摩擦系数适用于导向轴承系统。在上图示例中,负载由一根方形导轨(滚珠)系统支撑。
例如,如果使用了滚珠衬套,则摩擦会远远小于使用滑动轴承的情况。摩擦越小,滚珠丝杠移动负载所需的驱动力就越小。
该摩擦力可使用下列公式计算:F = µ N
其中
F是摩擦力
µ是摩擦系数
N是法向力
如果应用的导向轴承类型未知,请在下拉列表中选择Fluoronyliner。由于该轴承的摩擦系数最高,因此将为驱动系统所需的额外力构建“最坏情况”。
压缩负载:一种轴向挤压丝杠的作用力。
拉伸负载:一种从某个方向拉伸丝杠的作用力。
选定拉压负载后,可计算柱状屈曲值。
如果选择“仅拉伸负载”,柱状屈曲值将不会纳入计算。
负载质量 = 被移动对象质量。
该质量用于计算加速度力和摩擦力。
除质量外,螺母受到的轴向外力(如有)。 某些分段的作用力可为零。
根据应用需求,可定义各段的轴向力。
选择末端支撑前,请完成第一步。
末端处理输出 | |
---|---|
末端固定: | |
螺母方向: | |
延长丝杠方向: | |
左支撑: | |
右支撑: |
该工具允许配置标准Thomson末端支撑的加工。如果需要特殊加工请联系Thomson。
根据您此处作出的选择,提示可选螺母型号 。请参阅右侧表格。
包含集成或可选螺纹法兰
不带螺纹法兰的螺母,但可选择配备螺纹法兰。
紧凑型,适用于定制安装。
测试结果代码基于左侧输入值,有助于确定符合您应用标准的直径和节距。可调整输入值来获得最佳定制结果,如降低所需速度来增加找到理想丝杠直径和节距组合的几率。
Click any cell in the availability grid for more information.
标称滚珠丝杠直径(mm) | 节距(mm) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
2 | 3 | 4 | 5 | 10 | 20 | 25 | 32 | 40 | 50 | |
10 | ||||||||||
12 | ||||||||||
16 | ||||||||||
20 | ||||||||||
25 | ||||||||||
32 | ||||||||||
40 | ||||||||||
50 | ||||||||||
63 | ||||||||||
80 |
标称滚珠丝杠直径(英寸) | 节距(英寸) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
0.125 | 0.200 | 0.250 | 0.413 | 0.473 | 0.500 | 0.660 | 1.000 | 1.500 | 1.875 | 2.000 | |
0.375 | |||||||||||
0.500 | |||||||||||
0.631 | |||||||||||
0.750 | |||||||||||
0.875 | |||||||||||
1.000 | |||||||||||
1.150 | |||||||||||
1.171 | |||||||||||
1.500 | |||||||||||
2.000 | |||||||||||
2.250 | |||||||||||
2.500 | |||||||||||
3.000 | |||||||||||
4.000 |
Chart Key | |
---|---|
通过测试 | 动态负载故障 |
OAL长度故障 | 屈曲故障(已选定压缩负载) |
速度故障 | 不支持末端支撑 |
末端支撑负载故障 | 不适用该直径和节距 |
Thomson end supports available |
所有颜色(除深灰色)均可选的螺母。
除绿色螺母外,其他所有颜色螺母均有百分之一的可能造成机器故障。
Thomson英制产品线提供英寸规格的精密轧制滚珠丝杠,直径/行程组合全面。英制滚珠螺母包括非预加载或预加载双螺母两种外部循环系统选择。
产品可得性表列出了符合输入规格和曲线参数的直径/行程组件。如产品不符合要求,请参阅图表图例了解产品可得性及其原因。
Thomson公制产品线提供P5级精度的精密轧制滚珠丝杠。公制滚珠螺母配备内部循环系统,运行更加安静平滑。
产品可得性表列出了符合输入规格和曲线参数的直径/行程组件。如产品不符合要求,请参阅图表图例了解产品可得性及其原因。
除绿色以外,可能有多种颜色出现在同一单元格中,表明多种产品不可得原因。
What is the difference between these options?
view more
Next select between ending the screw at the end supports or continuing the screw through the end supports for either or both ends.
What is the difference between these options?
view more
Lastly, CLICK on the two buttons below to select the end supports you wish to have added to your assembly on the right.
Not sure what the differences between the end supports are, or need more information on any particular end support? view more
All relevant part numbers in the proceeding solution table will reflect the same end support choices to allow easy price comparison.
For most applications, the ball screw ends(s) will be supported with a bearing. Configurations that are commonly used to support the ends of a ball screw are:
Three combinations of bearing supports are typically used. Fixed on one end and free on the other offers the least support where Fixed on both ends offers the most support. Screws with more support are able to support higher loads without buckling and obtain higher critical speeds.
In a screw that is asymmetrical, or one end is different than another like in a fixed free or fixed floating combination, when installing the nut the factory needs to know how to orient the nut. If the screw is symmetrical, or the same on both sides, feel free to select the default (Right).
To fit a bearing support to a ball screw, a bearing journal must first be machined into the screw. The maximum diameter of the journal is limited by the screw geometry. Enough of the screw must be machined away to provide a shoulder for the bearing to seat against. The recommended maximum journal diameter is usually near the ball screws root diameter.
Example machined end (top) and machined end with a bearing block installed (Bottom)
To attach a ball screw to a drive system, a drive extension is machined into the screw. When ordering a ball screw assembly with bearing blocks or a ball screw with standard end machining, it is important to specify if this drive extension is wanted on one or both ends. The shaded area in the diagram above represents the drive extension. See the specific end machining details in the product catalog or specifications on the web.
BK and BF: Base mounting configuration.
FK and FF: Flange mounting configuration.
MK: MK is an FK bearing support with a motor mount bracket.
WK: Flange mounting configuration with higher load capacity bearings.
作为高精度、高负载应用的理想之选,公制和英制滚珠丝杠符合高规格的生产标准,内部摩擦阻力低,可将旋转运动转化为直线运动。
并非所有精密滚珠丝杠都生而精密。Thomson对设计、质量、材料、生产和应用支持的专注使我们在竞争中脱颖而出,也是我们持续数十年获得成功的秘诀。
如果标准的Thomson滚珠丝杠不能满足您的特定规格需求,我们的工程专家可为您的应用定制解决方案。无论是大量采购,还是简单的部件修改或是复杂的装配,我们都可以根据您的需求定制功能来提高机器的性能。
Thomson提供丰富的在线资源,无论您的购买决策处于哪个阶段,都可以为您提供帮助:
凭借高质量、长使用寿命和可靠的支持服务,Thomson滚珠丝杠占据全球市场已有将近1个世纪。本视频介绍Thomson滚珠丝杠生产过程、选型、定制选项、应用以及在线资源等。观看视频后,您也可以反问自己“Thomson滚珠丝杠对我而言有哪些用途?”
实施任何新应用都需要对产品性能、使用寿命和成本进行仔细分析,尤其是需要处理大负载的应用。了解为何应在未来的直线运动应用中考虑使用高负载滚珠丝杠而不是标准滚珠丝杠。
演讲人: Markus Brändle,产品线专家 - 丝杠、螺旋升降机和LB&G,Thomson Neff Industries,德国
如何将轴承重新安装到单循环滚珠螺母上。通常滚珠螺母是单循环滚珠螺母。但该技巧也适用于滚道循环滚珠螺母。
借助Thomson Electrak HD直线执行器的同步选项,Spika Design and Manufacturing公司为客户打造性能、功能性和安全性更出色的作业平台。
Because ball screws are available in both inch and metric dimensions, designers sometimes begin the specification process by selecting a product family based on the unit of measure. This decision may prematurely exclude the ideal product for the application and lead to significant losses in time, labor and expense. This article explains how sizing and selection questions centered on performance – instead of product monikers – can lead to more efficient linear motion designs.
Roller screws have been promoted as the only technology of choice for handling large loads when size is a constraint. But in actuality, advances in ball screw technology have now enabled the capability to support high-load applications as well. This is important because a high-load ball screw is typically less than half the cost of a comparable roller screw at equivalent performance points.
Used in large-scale production applications that involve continuous lifting operations but still require a human touch, collaboration robots (cobots) are gaining popularity. A French cobot maker has developed a solution that uses ball screw and cable actuators instead of gears, setting a new benchmark for cobot efficiency and safety.
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SFM Safety Nut | 446 KB | |
SFM Safety Nut | 442 KB |
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2019-04-26 | ||
2016-01-14 | ||
2016-01-04 | ||
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+ 滚珠丝杠组件 | |||
滚珠丝杠组件-英制 | ![]() |
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滚珠丝杠组件-公制(北美) | ![]() |
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滚珠丝杠组件-公制(欧洲) | ![]() |
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+ 滚珠螺母 | |||
法兰滚珠螺母-英制 | ![]() |
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法兰滚珠螺母-公制 | ![]() |
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螺纹滚珠螺母-英制 | ![]() |
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螺纹滚珠螺母-公制 | ![]() |
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圆柱形滚珠螺母-公制 | ![]() |
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+ 末端支撑 | |||
滚珠丝杠末端支撑-英制 | ![]() |
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滚珠丝杠末端支撑-公制 | ![]() |
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+ 丝杠 | |||
精密磨削滚珠丝杠-英制 | ![]() |
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精密磨削滚珠丝杠-公制 | ![]() |
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+ 附件 | |||
滚珠丝杠法兰 | ![]() |
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滚珠丝杠刮刷器 | ![]() |
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