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中国定制扭簧 | BQUQ精密制造

定制扭簧,公差±0.01 mm,原型交期12小时 扭簧是一种机械螺旋弹簧,绕其轴线扭转时储存和释放旋转能量。在BQUQ,我们生产的弹簧线径范围为0.1 mm至12 mm,腿位公差达±0.01 mm,表面粗糙度Ra 0.4 µm,确保您的机构循环运行超过100,000次而无疲劳失效。 我们的精密制造工艺位于中国东莞,原型扭簧最快12小时交付,批量生产周期5–7天,硬度为45–52 HRC,具体取决于


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定制扭簧,公差±0.01 mm,原型交期12小时

扭簧是一种机械螺旋弹簧,绕其轴线扭转时储存和释放旋转能量。在BQUQ,我们生产的弹簧线径范围为0.1 mm至12 mm,腿位公差达±0.01 mm,表面粗糙度Ra 0.4 µm,确保您的机构循环运行超过100,000次而无疲劳失效。

我们的精密制造工艺位于中国东莞,原型扭簧最快12小时交付,批量生产周期5–7天,硬度为45–52 HRC,具体取决于材料和线径。

我们如何控制腿位和旋向精度

腿位误差是扭簧故障最常见的原因。我们使用配备伺服驱动节距控制的CNC卷簧机,可将最多20圈弹簧的腿角公差控制在±2度。对于需要特定旋向(左旋或右旋)的弹簧,我们的模具将螺旋角锁定在5度,防止弹簧在心轴上安装时卡滞。我们使用数字扭矩测试仪验证每根弹簧的自由角度和90度挠度下的扭矩,为您的装配线提供数据。

我们用于高循环疲劳的材料和热处理

我们备有五种弹簧级材料:琴钢丝(ASTM A228)、油淬铬硅钢(ASTM A401)、302不锈钢(ASTM A313)、磷青铜(ASTM B159)以及用于高温环境的Inconel X-750。对于需要超过50,000次循环的应用,我们推荐铬硅钢配合喷丸处理,可将疲劳寿命提高30%。热处理在惰性气氛炉中于260°C进行30分钟以消除残余应力,随后进行回火循环以达到48 HRC的均匀硬度。无论批量大小,我们不会跳过任何弹簧的应力消除工序。

表面处理和端圈磨平选项

标准表面粗糙度为Ra 0.8 µm,但对于线径大于2 mm的弹簧,我们可通过无心磨削达到Ra 0.4 µm。对于必须平贴配合表面的弹簧,我们将端圈磨平,端面平行度达0.02 mm。这对于棘轮机构或凸轮从动件中使用的扭簧至关重要,因为倾斜的腿会导致不均匀磨损。我们还提供不锈钢弹簧的电抛光处理,可去除微划痕并将应力集中点减少15%。

每次发货前检验:扭矩和角挠度测试

每批扭簧均使用分辨率为0.01 N·mm的校准扭矩计进行检验。我们在45度、90度和135度挠度下测量扭矩,并与您指定的值进行比较,公差为±5%。对于外径大于10 mm的弹簧,使用三坐标测量机(CMM)检查腿位。对于较小的弹簧,我们使用20倍放大率的光学比较仪。每批订单均附带完整检验报告,包括材料证书和硬度测试结果。任何批次中超过1%的样品超出您的公差范围,我们都会拒收。

规格数值
线径范围0.1 mm – 12 mm
最大外径80 mm
最大自由长度200 mm
腿角公差±2度
腿位公差±0.01 mm
表面粗糙度(Ra)0.4 µm – 0.8 µm
硬度(HRC)45 – 52 HRC
90度扭矩公差±5%
工作温度范围-40°C至+250°C(Inconel:+650°C)
原型交期12小时(CNC卷簧)
生产交期5 – 7天
起订量无起订量(接受1件)

我们在生产前设计规避的常见失效模式

扭簧以三种方式失效:腿弯曲、线圈碰撞和应力松弛。我们通过将腿长与线径之比控制在10:1以下来防止腿弯曲,除非您另有要求。线圈碰撞发生在相邻线圈在完全挠度下接触时;我们计算线圈间隙为最大卷绕时线径的15%。应力松弛通过在制造过程中将弹簧设定为其弹性极限的80%来避免,这一工艺称为预压或强压处理。我们的工程师在切割任何线材之前审查您应用的挠度角和扭矩要求,因此您不会在模具制作完成后才发现失效模式。

我们如何无模具费处理小批量原型

大多数扭簧供应商收取$500–$1,500的卷簧模具费。我们不收取。我们的CNC卷簧机使用可编程刀具路径,这意味着不同线径或腿配置的原型只需软件调整,无需新模具。新弹簧的换型时间为45分钟,且对于1,000件以下的订单我们不收取模具费。这就是工程师在批量生产前将图纸发送给我们进行快速功能测试的原因。供您参考,我们的CNC刀具选择指南解释了刀具几何形状如何影响弹簧卷绕质量,我们的CNC加工公差指南详细介绍了我们用于验证弹簧尺寸的测量方法。

出口运输的包装和防腐蚀保护

我们使用VCI(气相防锈)纸包装扭簧,然后密封聚乙烯袋和带泡沫内衬的瓦楞纸箱,以防止运输过程中线圈变形。对于不锈钢弹簧,我们使用温和的钝化处理(柠檬酸)去除表面的游离铁颗粒,防止潮湿环境中出现锈斑。每个箱子都贴有条形码,可追溯批次号、热处理日期和检验结果。我们每周向美国、德国、日本和韩国出口,小包裹使用DHL或FedEx,50 kg以上订单使用海运。

常见问题

定制扭簧的最小起订量是多少?

我们没有起订量——您可以订购单个原型进行测试,我们仍将应用与10,000件批次相同的检验和材料认证标准。

你们能否匹配我从其他制造商获得的现有扭簧?

可以,请将实物样品或包含线径、外径、圈数和腿位的图纸发送给我们,我们将逆向工程至精确尺寸,包括扭矩曲线验证。

你们如何确保不同线材弹簧的质量控制?

我们在卷簧前测试每批线圈的拉伸强度和硬度,热处理后重新检查扭矩和腿位,最后在5倍放大镜下进行100%外观缺陷检查。

5,000件扭簧生产订单的典型交期是多少?

图纸批准后生产交期为5–7天,如果您在中国标准时间上午10:00前确认设计,我们可在12小时内快递原型。

12小时内获取含图纸的正式报价

将您的扭簧图纸或带尺寸的照片发送给我们。我们将在12个工作小时内回复正式报价,包括材料成本、热处理、表面处理和扭矩模拟报告。无设计费、无模具费、无起订量。将文件发送至sc@bquq.com或通过WhatsApp联系我们+86 13713157787。我们会在一个工作小时内回复每一条询盘。


相关产品

参数

参数能力
材料SUS302/304/316、SWC琴钢丝、SWP音乐钢丝、65Mn、磷青铜、铍铜
类型压缩弹簧、拉伸弹簧、扭簧、线成型件、电池弹簧、触片弹簧
线径0.05 - 12.0 mm
公差±0.02mm标准,±0.01mm可按要求提供
表面处理镀锌、镀镍、发黑、钝化、喷丸
设备CNC弹簧卷制机、扭簧机、线材成型机
打样72小时,样品无最小起订量
检测每批负载测试,疲劳测试数据可按要求提供

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