Assembly & integration.装配与集成
Twelve assembly bays, three inside an ISO Class 8 clean-room for optical work. We integrate complete compound bows and crossbows, premium hunting and target bow sights, laser sights and lights, optical scopes, industrial rangefinders, and multi-function toy guns and blasters. Strict on-line QC throughout — torque-logged on every fastener, calibrated where applicable, and end-of-line tested on every unit before kitted retail or OEM stage.
Twelve assembly bays across three domains.十二条装配线，覆盖三大领域
Bays are not generic workbenches — each is configured for a program, with the right fixtures, torque tools, vision, and EOL station built in. Three of the twelve sit inside an ISO Class 8 clean-room enclosure for optical sub-assembly and sealed-electronics work. 工作单元不是通用工作台——每个都按项目配置专属夹具、扭矩工具、视觉系统与出厂检验台位。十二个中有三个位于 ISO 8 级洁净室内，用于光学子装配与密封电子组装。
Mechanical assembly & torque control.机械装配与扭矩控制
Every fastener torqued by a DC-electric smart tool with closed-loop feedback. Every cycle logged against the unit serial number. The assembly record is structured data — not a handwritten travel sheet — and it is queryable for the life of the program. 每颗紧固件均由直流电动智能工具闭环反馈拧紧。每次操作按产品序列号记录。装配记录为结构化数据——不是手写流转单——项目周期内可随时查询。
Twelve newton-metres on the spec means twelve newton-metres in the unit.规格上写12牛米，出厂件就是12牛米
A pneumatic clutch wrench or a hand-driven torque wrench delivers ±10 to ±15% of nominal — fine for a deck screw, terrible for an optic mount, a bow-cam axle, or anything that has to survive recoil or impact in service. We use DC-electric smart tools that hold ±2% on torque and ±1° on angle, with the actual measurement recorded against the fastener and the serial number of the unit. 气动离合扳手或手动扭矩扳手的精度在±10–15%——适合甲板螺钉，但对光学瞄准镜安装、弓凸轮轴或任何需要承受后坐力与冲击的部件而言太差。我们使用直流电动智能工具，扭矩精度±2%、角度精度±1°，实际数值按紧固件与单机序列号归档。
The audit trail this generates is the difference between "we think we torqued it" and "here is the measurement at 14:32 on the third shift, on unit 00482, by operator B." Warranty disputes get resolved from data, not memory.
Electro-mechanical integration.机电集成
For programs where mechanical assembly meets electronics — battery integration, sensor and PCB sub-assembly, firmware loading, in-circuit and functional test — we run two dedicated cells with full ESD protection, programming benches, and per-unit test logging. Trail cameras, rangefinders, drone airframes, and instrumented sporting goods all flow through here. 机械装配与电子结合的项目——电池集成、传感器与PCB子装配、固件烧录、在线与功能测试——我们运行两个专属工位，配完整ESD防护、烧录工作台、单机测试记录。野外相机、测距仪、无人机机架、带传感器的运动器材都从这里流过。
ESD-protected, programmer-equipped, test-logged.防静电、配编程器、测试记录留档
Modern outdoor and tactical products are rarely purely mechanical. A trail camera is an optical sub-assembly bonded to a PCB, sealed inside a housing, with battery contacts that have to survive humidity cycling. A modern rangefinder is the same with a laser driver and a microcontroller bolted to it. Either fails in service if the integration is wrong — and "wrong" usually means either ESD damage during build or a missed firmware step.
Both EM stations sit on ESD-controlled flooring, with grounded ESD mats, wrist-strap monitoring, and ionised-air heads at sensitive stations. Firmware programming runs from a controlled image repository — the version that goes into the unit is the version on the program build sheet, not whatever is on the operator's laptop. Every programming and test event is logged against the unit serial number. 两个机电工位均位于ESD受控地板上，配接地ESD垫、腕带监测、敏感位置的离子风嘴。固件烧录从受控镜像库执行——装入单机的版本就是项目生产单上的版本，而不是操作员笔记本上的版本。每次烧录与测试事件均按单机序列号归档。
Kitting & end-of-line testing.配套与出厂测试
Strict QC on the line is the rule — every assembled unit goes through a 100% end-of-line test against the program's pass/fail criteria before the carton is sealed. Failures get serialised, root-caused, and tracked as a process-control signal, not a discard event. Passes get kitted and packaged in retail-ready or OEM-staged form.
If a defect can be tested, it gets tested.能测出的缺陷，就一定测
Sample-based AQL works well at vetting incoming raw materials. For finished assembly it's not enough — a missed tolerance on a single unit becomes a customer return, a brand-damage event, or in the worst case a safety issue. Every program at Telfid runs 100% EOL on every test that can practically be automated: vision dimensional, functional electrical, optical alignment, leak/seal, weight, torque-trace presence.
The kitting line that follows is ours, not a third-party packer. Cartons, foams, instructions, cables, hardware, accessories — all staged and packed in the same building under the same quality system that built the unit. Programs ship retail-ready or OEM-staged depending on the customer's downstream flow.
Fasteners & joining methods.紧固件与连接方法
Mechanical joints, adhesive bonds, threaded inserts, sealants, and electronics-grade joining methods all qualified for production use. Selection driven by load case, service environment, and program volume — not by what we have on the shelf. 机械接合、胶接、螺纹嵌件、密封胶、电子级接合工艺均经量产合格验证。选用依据载荷工况、使用环境与项目批量——而不是手边现有的方法。
Standard metric machine screws, socket head, button head, flat head. Strength classes 8.8, 10.9, 12.9. Stainless A2 / A4 for corrosion service.
Imperial threads on US-spec programs. Standard, fine, and extra-fine pitches. Common on aerospace and US firearm-accessory work.
Self-tapping screws into molded plastic and machined aluminium bosses. Plastite trilobular thread for plastic; cold-form for ductile metals.
Nyloc, all-metal stiff-nut, and threaded-locking compounds for prevailing-torque requirements. Used where vibration loosening is the failure mode.
Brass inserts heat-pressed into molded thermoplastic bosses. Standard for plastic-to-metal threaded interfaces in housings and grips.
Brass inserts driven by ultrasonic horn into thermoplastic. Faster than heat-set, lower heat-affected zone — used on tighter-tolerance applications.
Brass or steel inserts placed in mold before injection. Strongest pull-out resistance; requires capable tooling and 2K or insert-molding press.
Self-clinching nuts and studs for sheet metal. Permanent installation in the parent metal — strong threaded interface in thin material.
3M DP series, Loctite Hysol, Henkel Macroplast. High-strength bonding for load-bearing joints — composite to metal, optical-mount bonding.
Loctite 401 / 414 / 480. Fast-cure for small-area bonds, gasket retention, low-load assembly. Activator for slow surfaces.
Dymax / Loctite UV-cure. Optical-grade clarity, instant cure under 365 nm. Used for lens bonding, reticle attachment, sealed-electronics potting.
Room-temperature vulcanising silicone for sealing, gasket-in-place, and flexible bonding. Common for IPX-rated housing seals.
Loctite 243 (medium), 263 (high-strength), 290 (wicking). Applied per torque-strategy spec. Tracked per-fastener on aerospace programs.
Loctite 567 / 577 for fluid- and gas-tight threaded joints. Common on N₂-purged optical assemblies and pneumatic device fittings.
Lead-free SAC305 hand and selective soldering. RoHS-compliant assemblies. Wave-solder and reflow available for through-program PCB sub-assemblies.
JST, Molex, Hirose, Phoenix Contact — pre-terminated and crimped. Pull-test verified per DIN 41611-3.
Fastener and adhesive selection is part of the program engineering. Customer-specified part numbers honoured by default; we recommend alternates only when the specified item presents a manufacturability or service-environment concern, and we always document the proposal before any change.
What every finished unit is held to.每件成品必须达到的标准
Assembly quality criteria are different from part criteria — they govern joint integrity, alignment, sealing, electrical function, and cosmetic acceptance. The values below are what we hold in production. Programs with tighter requirements get qualified through a process capability study before lot release. 装配的品质标准与零件标准不同——其管控接头完整性、对位、密封、电气功能、外观接受度。下方数值为我们在量产中所执行的标准。要求更严的项目，会在批次放行前通过工艺能力研究做资格认证。
| Criterion | Production target | Achievable | Notes |
|---|---|---|---|
| Torque accuracy DC-electric smart tools | ±2% of nominal | ±1% | Daily verification on a calibrated reference instrument. Annual third-party calibration. |
| Torque-angle log per fastener | 100% logged | Per fastener · per S/N | Build record archived 7 years. PDF or structured export per program. |
| Optical alignment reticle / lens / sensor / boresight | ±0.1 MOA | ±0.05 MOA | Collimator + autocollimator verified per program. Custom alignment fixture per device. |
| Click tracking turret elevation & windage | ±5% per click | ±2% | Tracking-fixture verified — N clicks must equal N MOA. Trace logged per unit on scope programs. |
| Light transmission scope / sight optical throughput | ≥ design ±2% | Within ±1% | Lux meter at design objective. Sampled per AQL on production; 100% on premium programs. |
| Seal integrity N₂-purged housings | IPX7 | IPX8 (helium leak) | Pressure-decay 100% test on all sealed units. Helium leak on critical service classes. |
| Functional EOL all electrical / optical units | 100% pass | 100% logged | Custom test fixture per program. Pass / fail logged against serial number. |
| Vision dimensional presence + position | 100% on critical features | ±0.05 mm position | Keyence VS or Cognex vision; programmed per program's drawing. |
| Cosmetic class visible exterior surfaces | Class B (good) | Class A (show) | 100% visual inspection at EOL. AQL 0.65 sample re-verified by QC supervisor. |
| Build-record completeness per S/N | Required | Queryable archive | Unit cannot ship without complete build record. MES gate enforced at carton seal. |
| FAI / first-article new program release | AS9102 on request | + Cpk study | FAI report ships with first lot when program calls for it. Process capability confirmed Cpk ≥ 1.33 before production release. |
Out-of-control response. EOL failure rates are watched daily. A run rate above program threshold triggers a hold, a five-why root-cause review with engineering and quality together, and a documented corrective action before production resumes. Customer notification at the time of hold — not at the time of resolution.
A sampling of work across our facilities.我们设施作品取样
Anonymised summaries of programs currently or recently in production. Customer names and specific drawings withheld under standing NDAs — scope and characteristics representative of typical engagements. 当前或近期在产项目的匿名摘要。客户名称与具体图纸根据长期保密协议保留——范围与特征代表典型合作类型。
Compound bows · final integration复合弓 · 最终集成
Full bow build — riser, limbs, cams, cable system, sight rest, stabilizer bushings. Torque-logged on every cam axle and limb-pocket fastener. Functional draw-cycle EOL, peak-weight verification, and arrow-flight test before retail packaging.
Crossbows · final integration弩 · 最终集成
Full crossbow build — stock, rail, trigger group, cocking mechanism, limbs, cables, scope mount. Torque-logged trigger and riser fasteners. Function-fired EOL through a backstop with velocity verification. Kitted retail-ready with case and arrows.
Bow sights & accessories弓箭瞄具与配件
Premium hunting and target bow sights — pin sights, single-pin slider sights, lighted-pin sights, scope-mounted bow sights with adjustable parallax. Optical clean-room sub-assembly for pin and lens carriers, tracking-fixture verified click adjustment, lighted-pin LED calibration.
Laser sights & lights激光瞄准器与战术灯
Visible-red and green laser sights with boresight calibration to host mounting interface. Tactical lights with lumen verification on every unit. Laser power written back to NVM per unit. Sealed housing IPX7 helium leak test before pack.
Industrial rangefinder工业测距仪
Optical sub-assembly in clean-room (lens bonding, reticle alignment, N₂ purge, IPX7 seal), then merged with PCB and battery in EM station. Calibration writeback per unit. Helium leak EOL, range-accuracy test against a calibrated target.
Toy guns & blasters · multi-function玩具枪 · 多功能
Multi-function toy guns and gel/dart blasters with electronic firing modes, LED effects, and rechargeable battery integration. Mechanical + electro-mechanical build, firmware loaded per unit, firing-cycle test as functional EOL. Retail packaging with accessories.
Sending us an assembly program.把装配项目交给我们
Assembly engagement looks different from a per-part quote — we are designing a process, not just pricing a part. Expect a longer front-end (test definition, fixture design, build-record schema) and a more thorough first-article gate. 装配合作与单件报价不同——我们设计的是工艺流程，不是单纯给零件定价。前期工作时间更长（测试定义、夹具设计、装配记录架构），首件检验阶段也更全面。
Process engineering, not just labour cost.工艺工程，不只是人工成本
For new assembly programs we run a process-engineering review with the customer covering: build-up-of-tolerance, fixture concept, torque strategy per joint, EOL test definition, fail-route handling, and build-record schema. The output is a process flow document the customer can sign off before any line is built.
Quote turn-around runs ten to fourteen business days for new assembly programs. Line build-up and qualification run two to four weeks. Pilot lot ships under a documented process, and production starts only after the customer signs off the FAI and the process capability study.
Have a program that needs assembly?有项目需要装配？
Send a BOM, an assembly drawing, and a description of the test intent. An assembly engineer comes back with a process proposal, fixture and EOL concept, build-record schema, and an honest read on which of our lines fits the program.