Track outstanding parts
ERP scanning updates order progress so the team can track which drawing numbers still have work outstanding.
INDUSTRIAL AUTOMATION / HIGH-MIX, LOW-VOLUME MACHINING
Custom parts for industrial automation.
Many part numbers. Small quantities. One RFQ. OUJI coordinates machining, heat treatment, finishing and simple assembly for your automation-equipment drawing package.
Single-piece CNC parts & mixed orders Metals & engineering plastics
01 / MANY DRAWING NUMBERS. ONE COORDINATED ORDER.
High-mix, low-volume CNC machining.
Organized around your whole order.
OUJI is a custom-parts manufacturer in Dongguan, China. We break a large drawing package into practical manufacturing routes, so simple parts can move efficiently while complex parts receive closer process control.
Group by manufacturing process
Start with CNC milling, turning and sheet metal. Separate straightforward turned parts from parts that need turning followed by additional operations.
Plan within material groups
Within milling, group aluminum, steel parts and the plastics/copper workstreams, then refine the material-specific routes. Match recurring material work to suitable equipment and experienced people.
Match the difficulty to the team
Assign each group to suitable machining staff or specialist suppliers. Complex, multi-process components receive a written process route and dedicated production planning and control (PMC) follow-up.
Plan for complex-part trials
Additional material is allocated for trials on complex parts to reduce the risk of scrap disrupting the delivery plan.
Carry experience into repeat orders
Drawing-number records retain the established manufacturing assignment. Repeat work returns to the people or suppliers suited to that part, with revisions reviewed.
Machining, specialist processes and simple assembly can be reviewed within the same drawing package.
Discuss your complete part list02 / CUSTOM AUTOMATION PARTS
From the fixture plate
to the last spacer.
Clamping, mounting and motion components made to your drawings. The OUJI parts below illustrate the machining work behind these families.
Fixture & clamping parts
Fixture plates, locating nests, clamps and tooling blocks for holding or positioning a workpiece.
KEY DRAWING DETAILSLocating faces, dowel holes and contact profiles.
Brackets & machined interfaces
Sensor mounts, actuator brackets, motor interfaces and multi-face mounting components.
KEY DRAWING DETAILSMounting patterns, mating faces and assembly clearances.
Shafts, bushings & spacers
Turned shafts, pins, sleeves and spacers for motion assemblies and mechanical connections.
KEY DRAWING DETAILSMating diameters, bore fits, shoulders and concentric features.
Machining & fabricated parts
CNC milling, turning, sheet metal and wire EDM coordinated within the drawing package.
Heat treatment & finishing
Required heat treatment and surface processes included in the agreed manufacturing route.
Simple assembly & identification
Dowel pins, threaded inserts, part marking and paint marks. Selected basic standard components can also be included after review.
03 / FROM OUR MACHINING RECORDS
Multiple faces.
One datum strategy.
For this EN AW-6082 aluminum component, OUJI used a temporary dovetail setup and 3+2 indexed milling to machine related features across several faces.
The setup kept the datum relationship in place between indexed cuts. The temporary clamping feature was removed in a separate milling operation.
Read the full 6082 machining case- MATERIAL
- EN AW-6082 aluminum
- PROCESS
- 3+2 indexed CNC milling
- DRAWING REQUIREMENT
- ⌀0.02 mm position to A | B | C
This published machining example demonstrates a multi-face setup approach. Its end-use application is not identified. The 0.02 mm value is a drawing requirement; the public case reports production confirmation, without measured inspection values.
MANUFACTURING & INSPECTION AT OUJI
Resources you can review.
CNC milling, turning, Swiss-type/micro machining and surface grinding are directly operated. OUJI coordinates specialist processes with qualified suppliers, supported by engineering, purchasing and quality staff.
OUJI equipment ledger, September 2026. Machine counts describe manufacturing resources; part tolerances and inspection scope are agreed from your drawing.
Review inspection equipment & quality documents04 / MANY MATERIALS. PART-SPECIFIC REQUIREMENTS.
Different materials.
The same attention to fit.
A machine build may combine metal mounts, steel shafts, brass bushings and plastic guides. We review the grade, finish and assembly-critical features of each part.
Metals & engineering plastics
Include the exact material grade for each part number. Material substitutions are discussed before quotation.
Steels & stainless steelCarbon / alloy / tool / stainless grades
Include any hardness, heat treatment and final grinding requirements.
Engineering plasticsPOM / UHMW-PE / nylon
Specify the exact polymer and any product-contact, fit or surface requirements.
Agree the inspection scope
Locating & mounting faces
Specify: Primary datums, flatness and perpendicularity.
Define the setup references and the features to be inspected before machining.
Dowel holes & bore fits
Specify: Size limits, position and mating-part information.
Agree the fit controls and inspection method around the drawing.
Finished mating surfaces
Specify: Anodizing, coating, heat treatment or grinding.
Confirm where final dimensions apply and which surfaces need masking or secondary machining.
Repeat-order parts
Specify: Part number, drawing revision and agreed changes.
Check the new order against the approved specification before production.
05 / ORDERING, IDENTIFICATION & DISPATCH
One order.
Parts ready for your next step.
Your part list remains the reference through quotation, production and dispatch. Agree how the parts should be identified, which documents you need and whether the package ships together or in stages.
Shown as an example of OUJI’s packing preparation, separate from the large-order profile above.
- One consolidated order
- Place the drawing package together. The quotation format can follow your purchasing requirements.
- Identification that follows your parts
- Parts are identified by drawing number, or to your specified labeling requirements.
- Dispatch to your build plan
- Complete-package or staged dispatch can be arranged to suit the agreed project requirements.
- Documents agreed with quotation
- Quality records, material documents and other requested records are included according to the agreed scope.
Start with a part list
Include drawing number, revision, quantity, material and finish. Add inspection requirements and the date you need the parts. Details already in your drawings do not need to be repeated.
Send your complete drawing packageConfirm the manufacturing scope
We will review your files and reply by email with any questions, the proposed manufacturing route and quotation next steps. Price and dispatch date are confirmed after drawing review.
Single-piece CNC parts can be reviewed. Swiss-type/micro machining has a separate policy: sample orders from 100 pieces.
CNC production lead-time guide View timing by process
| Part type | Earliest | Typical dispatch |
|---|---|---|
| Standard parts, no heat treatment | From 3 business days for simple parts | Within 14 business days |
| Heat-treated parts | From 14 business days | About 21 business days |
| Complex parts requiring heat treatment | From 30 business days | Confirmed with quotation |
Production lead times run from drawing approval and technical confirmation to dispatch. Transit time is not included. Quantity, material availability, finishing and inspection requirements are confirmed with the quotation. The full package and any staged dispatch are scheduled after reviewing the part list.
06 / BEFORE YOU SEND DRAWINGS
Automation machining FAQs.
Can OUJI handle a large drawing package with only a few of each part?
A typical large automation-equipment order described by OUJI involves around 300 drawings and more than 20 materials. About 80% of the drawings specify fewer than 10 pieces each. This describes OUJI’s experience with that large-order profile, rather than a company-wide order statistic. The package can be coordinated through machining, heat treatment, finishing and agreed simple assembly.
How does OUJI organize high-mix, low-volume CNC machining?
OUJI first groups drawings by process, then by material and machining difficulty. Work is matched to suitable equipment, staff or specialist suppliers. Complex multi-process parts receive written routes and production planning and control follow-up. ERP scanning updates progress and helps track outstanding drawing numbers. Additional trial material is allocated for complex parts to reduce scrap-related schedule risk.
What can be included in one automation-parts order?
The agreed package can include CNC machining, sheet metal, wire EDM, heat treatment and surface finishing. OUJI also supports selected basic standard components and simple assembly, including dowel pins and threaded inserts, as well as marking and paint marks. Send the full part list so the scope and any exceptions can be agreed before ordering.
What do you need to quote an automation part?
A 3D model and 2D drawing where available, plus the quantity for each part. Include the material, finish, critical datums, fits and required date. Details already on the drawing do not need to be repeated. You can start an inquiry without uploading files and send them later by email.
What tolerances can you hold on fixtures and mounting parts?
Tolerance feasibility depends on the material, geometry, workholding, finish and inspection method. Mark the assembly-critical dimensions on your drawing for review. The 0.02 mm position requirement shown in the 6082 case applies to that drawing, rather than a general tolerance for all automation parts.
Can parts be labeled and dispatched to match our build schedule?
Yes. OUJI accepts consolidated orders, can adapt the quotation format to your requirements and identifies parts by drawing number or your specified labeling scheme. Complete-package or staged dispatch can be arranged according to the agreed project requirements. Specify the required quality, material and other records at quotation.
What happens when we reorder the same drawing numbers?
OUJI retains drawing-number records and the established manufacturing assignment. Repeat work is routed back to the suitable machining staff or suppliers. Send the current drawing revision and identify changes to the material, finish, quantity or inspection scope before the repeat order is confirmed.
What happens if my parts do not meet the agreed drawing requirements?
Contact your OUJI sales representative with the relevant inspection results or photos of the issue. We will promptly review the problem and, where necessary, confirm it by remeasuring retained samples or inspecting returned parts. If OUJI is confirmed to be responsible for the manufacturing nonconformity, we will work with you to arrange rework or remanufacture at no charge and cover the necessary transport costs.
What can I verify before you ship my first order?
OUJI provides finished-part photos and shipment photos. Full dimensional inspection reports, special measurements and other required reports must be agreed during quotation. You can review the agreed results and confirm release before shipment.
What happens if my PDF drawing and 3D model do not match?
OUJI's technical team reviews the drawing, 3D model and technical requirements during quotation, aiming to meet the original drawing and specified material. If the PDF drawing and 3D model do not match, dimensions conflict, or technical requirements are unclear or difficult to achieve, we put the project on hold. We mark the issue in red on a PDF or screenshot and request your confirmation. The project remains on our daily follow-up list; we do not proceed to the next step until you confirm the resolution.
Is OUJI ISO 9001 certified?
OUJI is not currently ISO 9001 certified. Projects are managed through drawing review, in-house process planning, production follow-up, inspection coordination, documentation review, and corrective action. Project-specific reports and certificates should be confirmed before production.
Can we agree an NDA before sharing drawings?
Yes. Send your NDA for review before sharing sensitive project files, or ask us for a standard confidentiality agreement.
Manufacturing information supplied by the OUJI team. Updated .
Order profile and operating practices confirmed by OUJI. The linked machining case states its own technical review and evidence scope.
YOUR NEXT EQUIPMENT BUILD
Send your part list & drawings.
Many different parts, a few of each, or a single replacement. Tell us the quantities and materials you need. Files can follow by email.
Prefer email, have a larger drawing package, or need an NDA first?
info@ouji-tech.comYour automation partsSend drawings