产品

CNC加工轴承座 | BQUQ精密制造

这些CNC加工轴承座是旋转轴与机器其他部分之间的精确接口。我们将孔径公差控制在±0.005 mm以内,总指示跳动(TIR)控制在0.002 mm以内,孔径表面粗糙度达到Ra 0.4 µm。原型件标准交期为7个工作日,批量生产为12-15天。当您的载荷要求较高时,我们可将轴承座热处理至45 HRC。 为什么孔径公差和TIR决定轴承寿命 松散的轴承座孔会造成两个问题:微动腐蚀和热量积聚。如


分享此产品


获取报价

产品详情

这些CNC加工轴承座是旋转轴与机器其他部分之间的精确接口。我们将孔径公差控制在±0.005 mm以内,总指示跳动(TIR)控制在0.002 mm以内,孔径表面粗糙度达到Ra 0.4 µm。原型件标准交期为7个工作日,批量生产为12-15天。当您的载荷要求较高时,我们可将轴承座热处理至45 HRC。

为什么孔径公差和TIR决定轴承寿命

松散的轴承座孔会造成两个问题:微动腐蚀和热量积聚。如果孔径椭圆度超过0.01 mm,外圈就会变形,轴承预紧力随之丧失。我们在Mazak五轴铣床上通过一次装夹完成孔径加工,因此孔径圆度及其与安装面的垂直度均基于同一基准生成。对于高速主轴,我们可将定位直径的TIR控制在0.002 mm以内。这个数值并非理论极限——而是我们每件出厂轴承座的标准检验指标。

我们使用的材料与热处理工艺

请不要只标注“钢”就发图纸给我们,然后期待得到可靠的零件。我们采用6061-T6铝合金(适用于对重量敏感的机器人)、1045碳钢(适用于通用工业齿轮箱)以及42CrMo4(适用于高载荷、高温应用)来加工轴承座。对于铝合金,我们建议进行硬质阳极氧化处理,表面硬度可达60 HRC等效值——这可以防止压装时孔径发生磨损咬合。对于钢材,我们提供孔径感应淬火,硬度可达50-55 HRC,硬化层深度1.5 mm。如果您需要更软但韧性更高的芯部,我们可跳过热处理,使用预硬态4140钢,硬度为28-32 HRC。请告知您的轴转速和径向载荷,我们会在您发送图纸之前就为您选择合适的材料。

我们如何在不引入应力的情况下加工孔径

轴承座不仅仅是钻出来的孔。我们首先粗加工孔径,预留0.3 mm余量,然后对零件(钢材)进行去应力处理,以消除加工引起的内应力。之后,我们使用CBN刀片以180 m/min的切削速度和0.05 mm/转的进给量精加工孔径,可获得Ra 0.4 µm的表面粗糙度。对于需要镜面效果(Ra 0.2 µm)的轴承座,我们会增加一道滚压光整工序,同时还能强化表面。我们绝不在轴承孔上使用铰刀——铰刀会留下撕裂状表面纹理,加速轴承密封件磨损。我们的镗杆针对每种轴承座系列单独定制研磨,即使在超过80 mm深的孔中也能确保零挠曲变形。

每批出货前的检验流程

每件轴承座都经过三步检验。第一步:使用三坐标测量机(CMM)检查孔径、圆度以及与安装孔的相对位置——我们报告实际数值,而非仅仅合格/不合格。第二步:在精密心轴上使用0.001 mm千分表进行TIR检查,将轴承座旋转360°以验证孔径与定位面同心。第三步:使用便携式粗糙度仪进行表面粗糙度测试,测量孔径和安装面的Ra值。我们会将CMM报告的电子版(PDF)附在您的装箱单中。如果您需要完整的PPAP(生产件批准程序),包括材质证书和热处理曲线,我们可免费为首件提供。

标准能力与设计限制

参数 我们的标准范围
材料 6061-T6, 7075-T6, 1045, 42CrMo4, 4140, 17-4PH不锈钢
孔径 10 mm 至 400 mm
轴承座外径 20 mm 至 600 mm
孔径公差(标准) H6, H7(可按要求达到±0.005 mm)
总指示跳动(TIR) 定位面0.002 mm,端面0.005 mm
表面粗糙度(孔径) 标准Ra 0.4 µm,滚压后Ra 0.2 µm
热处理 感应淬火至50-55 HRC,硬化层深度1.5 mm
硬度(预硬态) 4140为28-32 HRC,42CrMo4为35-40 HRC
交期 原型件7天,批量生产12-15天
起订量 无起订量——我们接受单件订单

我们如何处理定位直径和安装面

您的轴承座并非独立工作——它需要定位到电机端盖或齿轮箱壳体中。因此,我们在与孔径相同的装夹中加工定位直径(止口)和安装面。定位直径公差控制在±0.008 mm以内,端面平面度在0.005 mm以内。我们还使用以孔中心为基准(而非毛坯铸件边缘)的CNC钻孔循环来钻削和攻丝安装螺栓孔(M4至M16)。如果您的设计使用定位销进行对准,我们会在同一工序中将销孔铰削至H7公差,确保销中心精确位于螺栓圆上。这消除了装配时因拧紧螺栓而导致轴承座偏移几微米的经典错误。

防腐蚀与减摩表面处理选项

如果您的车间湿度较高,裸露的机加工钢材一周内就会生锈。我们为CNC加工轴承座提供三种标准表面处理:发黑处理(薄而均匀的涂层,不改变尺寸)、锌镍镀层(耐盐雾测试可达720小时)以及硬质阳极氧化(适用于铝合金,厚度40-50 µm)。对于孔径,我们建议不要进行涂层处理——任何镀层都会增加厚度并改变您的过盈配合。相反,我们仅在轴承座外径上使用干膜润滑剂(Molykote D-321R),使其能顺畅滑入机架而不会发生磨损咬合。我们还提供钢材磷化处理,可保持油膜并减少初期磨合阶段的磨损。

我们为您纠正的常见设计错误

我们每周都会看到同样的错误。首先,设计师指定H7轴承孔公差,却忽略了轴承座壁厚过薄——当您压入轴承时,壁面向内变形。我们会计算壁厚与孔径之比;如果低于0.15,我们会建议增加壁厚或采用钢制镶套。其次,设计师将卡簧槽放置得离孔口太近,导致我们的镗杆没有足够的退刀空间。第三,他们忘记设计润滑孔或润滑槽。我们可以加工半径为1 mm的螺旋油槽,但您必须在图纸上标注出来。请将您的粗略几何形状发送给我们——我们会在报价前指出这些问题,而不是等您收到不良品之后。

刀具选择与公差指南

您轴承座的孔径光洁度和TIR在很大程度上取决于刀具几何形状和机床设置。要了解我们为何在淬硬钢上使用CBN刀片、在铝合金上使用PCD刀片,请阅读我们的CNC刀具选择指南。如需深入了解我们如何定义和测量图纸上的±0.005 mm公差,我们的CNC加工公差指南解释了位置公差与几何公差之间的区别。这两篇文章均由我们车间一线的工程师撰写,而非市场人员。

常见问题解答

定制轴承座的最小起订量是多少?

我们没有起订量限制——我们可以为您加工单件原型轴承座用于测试台架,批量生产最低仅需10件起。

你们能否根据我带有关键公差的3D模型直接加工轴承座?

可以,我们接受STEP、IGES和Parasolid文件;我们会在报价阶段根据我们的加工能力验证您的GD&T标注。

你们如何保证500件批量生产中每件都达到0.002 mm的TIR?

我们使用机内在线探测,在每加工10件前调整镗杆,并对每批首件和末件进行三坐标测量机检验。

如果我需要50件4140钢并经过感应淬火的轴承座,交期是多久?

我们的标准交期是图纸确认后12天,加上2天热处理和最终孔径磨削,总计14天。

12小时内获取正式报价

请将您的图纸以STEP或PDF格式发送给我们。我们将审核材料、孔径公差和跳动要求,并在12小时内返回正式价格和交期。如果您对临界公差需要第二意见,请直接询问我们——我们会如实告知可实现性。中国制造的精密加工并不意味着低质量;我们靠速度和精度竞争,而非粗糙的工艺。请将图纸发送至sc@bquq.com,或通过WhatsApp联系我们:+86 13713157787。我们会在12小时内回复每一条询盘,周末也不例外。


相关产品

参数

参数能力范围
材料AL6061/7075, SUS303/304/316, 45#钢, T2铜, H59黄铜, POM, PEEK, 尼龙
公差±0.005mm标准,±0.003mm可按需定制
设备3/4/5轴CNC, 车铣复合, 瑞士型车床
表面处理阳极氧化, 镀镍, 镀锌, 钝化, 喷砂, 抛光
尺寸范围最大400 x 300 x 200 mm
打样72小时,样品无最小起订量
检测每批次提供完整报告,可按需提供CMM数据

联系我们报价
获取报价
我们使用cookie来改善您的在线体验。继续浏览本网站即表示您同意我们使用cookie

Cookies

Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
We may modify this Policy at any time, without prior notice, and changes may apply to any Personal Information we already hold about you, as well as any new Personal Information collected after the Policy is modified. If we make changes, we will notify you by revising the date at the top of this Policy. We will provide you with advanced notice if we make any material changes to how we collect, use or disclose your Personal Information that impact your rights under this Policy. If you are located in a jurisdiction other than the European Economic Area, the United Kingdom or Switzerland (collectively “European Countries”), your continued access or use of our Services after receiving the notice of changes, constitutes your acknowledgement that you accept the updated Policy. In addition, we may provide you with real time disclosures or additional information about the Personal Information handling practices of specific parts of our Services. Such notices may supplement this Policy or provide you with additional choices about how we process your Personal Information.


Cookies

Cookies are small text files stored on your device when you access most Websites on the internet or open certain emails. Among other things, Cookies allow a Website to recognize your device and remember if you've been to the Website before. Examples of information collected by Cookies include your browser type and the address of the Website from which you arrived at our Website as well as IP address and clickstream behavior (that is the pages you view and the links you click).We use the term cookie to refer to Cookies and technologies that perform a similar function to Cookies (e.g., tags, pixels, web beacons, etc.). Cookies can be read by the originating Website on each subsequent visit and by any other Website that recognizes the cookie. The Website uses Cookies in order to make the Website easier to use, to support a better user experience, including the provision of information and functionality to you, as well as to provide us with information about how the Website is used so that we can make sure it is as up to date, relevant, and error free as we can. Cookies on the Website We use Cookies to personalize your experience when you visit the Site, uniquely identify your computer for security purposes, and enable us and our third-party service providers to serve ads on our behalf across the internet.

We classify Cookies in the following categories:
 ●  Strictly Necessary Cookies
 ●  Performance Cookies
 ●  Functional Cookies
 ●  Targeting Cookies


Cookie List
A cookie is a small piece of data (text file) that a website – when visited by a user – asks your browser to store on your device in order to remember information about you, such as your language preference or login information. Those cookies are set by us and called first-party cookies. We also use third-party cookies – which are cookies from a domain different than the domain of the website you are visiting – for our advertising and marketing efforts. More specifically, we use cookies and other tracking technologies for the following purposes:

Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.

Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.

How To Turn Off Cookies
You can choose to restrict or block Cookies through your browser settings at any time. Please note that certain Cookies may be set as soon as you visit the Website, but you can remove them using your browser settings. However, please be aware that restricting or blocking Cookies set on the Website may impact the functionality or performance of the Website or prevent you from using certain services provided through the Website. It will also affect our ability to update the Website to cater for user preferences and improve performance. Cookies within Mobile Applications

We only use Strictly Necessary Cookies on our mobile applications. These Cookies are critical to the functionality of our applications, so if you block or delete these Cookies you may not be able to use the application. These Cookies are not shared with any other application on your mobile device. We never use the Cookies from the mobile application to store personal information about you.

If you have questions or concerns regarding any information in this Privacy Policy, please contact us by email at . You can also contact us via our customer service at our Site.