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黄铜扣轴扭簧系列 | BQUQ精密制造

本系列为专用于黄铜扣轴(皮带扣、箱包锁扣及快拆机构中的枢轴点)设计的扭簧。每款弹簧均提供一致的扭矩输出,线径公差±0.02 mm,腿位公差±0.05 mm,表面光洁度Ra 0.4,热处理后硬度48 HRC。使用寿命超过50,000次循环而无明显疲劳,标准交期为原型7天,批量生产15天。 腿角与自由位置如何影响扣轴扭矩 腿角决定扣轴在静止状态下所受的预载。我们将此角度控制在±1度,对应10,000


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本系列为专用于黄铜扣轴(皮带扣、箱包锁扣及快拆机构中的枢轴点)设计的扭簧。每款弹簧均提供一致的扭矩输出,线径公差±0.02 mm,腿位公差±0.05 mm,表面光洁度Ra 0.4,热处理后硬度48 HRC。使用寿命超过50,000次循环而无明显疲劳,标准交期为原型7天,批量生产15天。

腿角与自由位置如何影响扣轴扭矩

腿角决定扣轴在静止状态下所受的预载。我们将此角度控制在±1度,对应10,000件批次中的扭矩重复性为±3%。自由位置(即无负载时两腿之间的角度)保持在±2度,确保您的装配线无需逐件重新校准。对于标准4 mm轴径,我们提供0.15 N·mm/度的弹簧刚度,可根据您的实际载荷曲线进行调整。

我们用于实现48 HRC耐久性的材料与热处理工艺

我们选用302不锈钢(UNS S30200)或65Mn弹簧钢(GB/T 1222)。302不锈钢适用于海洋环境,提供耐腐蚀性能;65Mn则具有更高的抗拉强度,达1,600 MPa。两种材料均经过油淬及320°C回火90分钟的工艺处理,硬度达到46–50 HRC。这可防止弹簧在扣轴扭转至最大工作角度时发生永久变形——我们通过每批样品的10,000次循环测试进行验证。

线径范围及腿端形式选项,适配轴集成

我们生产的线径范围为0.3 mm至4.0 mm,长径比可达12:1且无线圈并紧。腿端形式包括直扭、双扭和钩端——后者常用于扣轴,弹簧缠绕在D形枢轴上。对于6 mm轴径,我们建议采用1.2 mm线径和4.5个有效圈数,可在应力达到屈服强度80%前实现最大90度偏转。腿端经方切加工,避免毛刺导致轴不对中。

线圈轴线的跳动控制与同心度

线圈轴线的跳动控制在0.03 mm总指示读数(TIR)以内。我们通过采用伺服驱动螺距控制的CNC卷簧机,随后对外径进行无心磨削来实现这一精度。对于连续旋转的扣轴,此跳动限制可防止导致黄铜壳体磨损的摆动。我们的检验记录显示,最近40个生产批次中跳动指标的Cpk为1.33,意味着99.7%的零件落在您的公差带内。

每次发货前的检验:扭矩与疲劳测试

每批产品均经过三步检查。首先,使用分辨率为0.01 N·mm的数字扭矩计,在10%、50%和100%偏转下进行扭矩测试。其次,随机抽取5件样品进行疲劳测试,每件以2 Hz频率循环10,000次,确认松弛率不超过5%。第三,使用轮廓投影仪进行尺寸审核,检查腿角,并使用千分尺测量线径。每箱附有签署的检验报告(IMDS格式),您还可在发货前要求查看测试运行视频。

规格数值
材料选项302不锈钢、65Mn弹簧钢、17-7PH
线径0.3 mm – 4.0 mm(±0.02 mm)
弹簧刚度0.05 – 5.0 N·mm/度(±3%)
硬度46 – 50 HRC(油淬回火)
线圈外径2.0 mm – 20.0 mm(±0.05 mm)
腿角公差±1度
自由位置公差±2度
表面光洁度Ra 0.4(磨削)、Ra 0.8(卷制状态)
跳动(TIR)最大0.03 mm
交期7天(原型)、15天(批量生产)
起订量无起订量(原型接受1件)

机加工扣件零件的CNC刀具选择指南

如果您自行加工黄铜扣轴,刀具几何形状直接影响弹簧的安装效果。更锋利的切削刃可减少轴槽上的毛刺形成,从而防止弹簧腿卡滞。请参阅我们的CNC刀具选择指南,了解进给速率和圆角半径,以保持槽壁方正——这可确保扭簧钩腿平整贴合,无需额外去毛刺。

轴配合与间隙的CNC加工公差指南

弹簧线圈内径必须与轴外径配合,间隙为0.1–0.2 mm,以确保顺畅旋转。间隙过紧会导致弹簧卡滞;过松则会产生晃动。我们的CNC加工公差指南解释了如何根据您需要过盈配合或间隙配合来指定h8或g6的轴公差。我们与您的轴图纸协调,使弹簧内径匹配该公差等级。

黄铜扣轴扭簧系列是否接受小批量订购?

是的,我们无起订量——您可以订购单件原型弹簧进行测试,批量生产价格从100件起。

您能否针对特定扣轴长度调整扭矩曲线?

可以,我们通过调整线径、圈数和腿角,在给定偏转下精确达到您的目标扭矩,并随样品附赠免费扭矩曲线图。

如何保证定制扭簧的质量?

我们对关键角度进行100%尺寸检验,每批进行5件疲劳测试,并随每批货物提供签署的IMDS报告。

定制弹簧订单的最快交期是多久?

原型弹簧通过快递在7天内发货,批量订单在15天内完成——两者均从图纸批准之日起计算。

12小时内获取扭簧设计的确定报价

发送您的图纸,注明线径、圈数、腿端样式和目标扭矩。我们将在12个工作小时内返回确定报价——包括模具费用(如有)、单价和交货日期。发送邮件至sc@bquq.com或WhatsApp +86 13713157787。无起订量,中国精密制造,批量订单附赠首个免费样品。


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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