CN102996626A - 整体式内圈无沟槽双联滚珠轴承 - Google Patents

整体式内圈无沟槽双联滚珠轴承 Download PDF

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CN102996626A
CN102996626A CN2012105267414A CN201210526741A CN102996626A CN 102996626 A CN102996626 A CN 102996626A CN 2012105267414 A CN2012105267414 A CN 2012105267414A CN 201210526741 A CN201210526741 A CN 201210526741A CN 102996626 A CN102996626 A CN 102996626A
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inner ring
groove
ring
ball bearing
balls
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CN102996626B (zh
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郑子勋
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ZHEJIANG UTE BEARING CO Ltd
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ZHEJIANG UTE BEARING CO Ltd
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Abstract

整体式内圈无沟槽双联滚珠轴承，包括外圈、内圈、保持架、滚珠和端盖，其特征在于所述的外圈内壁制有两道沟槽，两道沟槽中分别设置滚珠，滚珠有保持架定位，所述的内圈外壁无沟槽，滚珠与光滑的内圈外壁相接触，在内圈与外圈的两头安装端盖。最核心技术是内圈也相当于两只轴承的长度，但内壁没有沟槽，两组滚珠与光滑的内圈外壁相接触，当电机轴受热膨胀而伸长时，内圈跟着电机轴外移，而外圈不外移，避免轴承与轴承座卡死，而且无沟槽也减少了滚珠的摩擦，提高电机转速。同时整体式的双联轴承无装配累计误差，提高装配精度，延长电机使用寿命。

Description

整体式内圈无沟槽双联滚珠轴承
技术领域
本发明涉及滚珠轴承，特别是涉及一种整体式内圈无沟槽双联滚珠轴承。
背景技术
高速电机由于转动速度很快，对传动部件的精度要求很高，例如轴承安装的径向和轴向要求无间隙装配。而现有使用两只滚珠轴承进行并联安装，一是两只轴承存在着装配累计误差；二是高速电机的转子发热后将热量传递给电机轴，电机轴受热后产生膨胀伸长，使整个轴承随着电机轴的伸长而外移，引起轴承（主要外圈）与轴承座卡死，严重地影响了电机的转速和使用寿命。
发明内容
本发明的目的是为了克服已有技术的缺点，提供一种当电机轴受热膨胀后，仅仅轴承内圈跟着电机轴外移，避免轴承与轴承座卡死，同时双联轴承无装配累计误差，提高电机转速和延长使用寿命的整体式内圈无沟槽双联滚珠轴承。
本发明整体式内圈无沟槽双联滚珠轴承的技术方案是：包括外圈、内圈、保持架、滚珠和端盖，其特征在于所述的外圈内壁制有两道沟槽，两道沟槽中分别设置滚珠，滚珠有保持架定位，所述的内圈外壁无沟槽，滚珠与光滑的内圈外壁相接触，在内圈与外圈的两头安装端盖。
本发明公开了一种整体式内圈无沟槽双联滚珠轴承，主要特点是在外圈的内壁有两道沟槽，安装了两组滚珠和两只保持架，相当于两只轴承制成一个整体的型式，最核心的技术是内圈也相当于两只轴承的长度，但内壁没有沟槽，两组滚珠与光滑的内圈外壁相接触，当电机轴受热膨胀而伸长时，内圈跟着电机轴外移，而外圈不外移，避免轴承与轴承座卡死，而且无沟槽也减少了滚珠的摩擦，提高电机转速（一般为30000转—60000转/分钟）。同时整体式的双联轴承无装配累计误差，提高装配精度，延长电机使用寿命。
附图说明
图1是本发明整体式内圈无沟槽双联滚珠轴承的截面示意图；
图2是内圈的截面示意图。
具体实施方式
本发明涉及一种整体式内圈无沟槽双联滚珠轴承，如图1—图2所示，包括外圈、内圈、保持架、滚珠和端盖，其特征在于所述的外圈1内壁制有两道沟槽11，两道沟槽11中分别设置滚珠2，滚珠有保持架3定位，所述的内圈4外壁无沟槽，滚珠2与光滑的内圈外壁相接触，在内圈4与外圈1的两头安装端盖5、6。主要特点是在外圈1的内壁有两道沟槽11，安装了两组滚珠2和两只保持架3，相当于两只轴承制成一个整体的型式，最核心的技术是内圈4也相当于两只轴承的长度，但内壁没有沟槽，两组滚珠与光滑的内圈外壁相接触，当电机轴受热膨胀而伸长时，内圈4跟着电机轴外移，而外圈不外移，避免轴承与轴承座卡死，而且无沟槽也减少了滚珠的摩擦，提高电机转速（一般为30000转—60000转/分钟）。同时整体式的双联轴承无装配累计误差，提高装配精度，延长电机使用寿命。

Claims (1)

1.整体式内圈无沟槽双联滚珠轴承，包括外圈、内圈、保持架、滚珠和端盖，其特征在于所述的外圈（1）内壁制有两道沟槽（11），两道沟槽（11）中分别设置滚珠（2），滚珠有保持架（3）定位，所述的内圈（4）外壁无沟槽，滚珠（2）与光滑的内圈外壁相接触，在内圈（4）与外圈（1）的两头安装端盖（5、6）。
CN201210526741.4A 2012-12-10 2012-12-10 整体式内圈无沟槽双联滚珠轴承 Active CN102996626B (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060171622A1 (en) * 2002-06-25 2006-08-03 Nsk Ltd Double-row ball bearing for supporting pulley
CN201196193Y (zh) * 2008-04-11 2009-02-18 万向集团公司 单一内圈轮毂轴承
CN102297197A (zh) * 2011-06-14 2011-12-28 大连大友高技术陶瓷有限公司 一种高精度可轴向变位陶瓷球轴承的生产工艺
CN202991850U (zh) * 2012-12-10 2013-06-12 浙江优特轴承有限公司 整体式内圈无沟槽双联滚珠轴承

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060171622A1 (en) * 2002-06-25 2006-08-03 Nsk Ltd Double-row ball bearing for supporting pulley
CN201196193Y (zh) * 2008-04-11 2009-02-18 万向集团公司 单一内圈轮毂轴承
CN102297197A (zh) * 2011-06-14 2011-12-28 大连大友高技术陶瓷有限公司 一种高精度可轴向变位陶瓷球轴承的生产工艺
CN202991850U (zh) * 2012-12-10 2013-06-12 浙江优特轴承有限公司 整体式内圈无沟槽双联滚珠轴承

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