YHP Machining Co., Ltd. · Fenggang, Dongguan
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CNC Milling

Prismatic parts, pockets, contours, fixtures and housings — cut on 3-, 4- and 5-axis machining centres.

End mill cutting a pocket
Tool setting above the workpiece
Milled parts waiting for the next op
1,200 × 600 mmTable travel
3 / 4 / 5 axisSimultaneous axes
±0.01 mmTypical tolerance
Ra 0.8 µmMilled finish
1–5,000Batch range

Milling covers what cannot be turned: plates, brackets, housings, manifolds, mould inserts and fixtures. Three axes handle the bulk of it. Four and five axes exist for the parts where a dozen setups would otherwise be needed — and where every setup is another chance to lose the datum.

Programming runs from your STEP file. Where the model and the drawing disagree, the drawing wins and we tell you which feature we followed. Fixtures and soft jaws are made here, so a first article does not wait on an outside supplier.

What we make here

Parts that come through this department.

Plates, brackets and mounting blocksHousings and coversManifolds and fluid blocksFixtures and soft jawsMould inserts and cores5-axis contoured parts

Typical work: prototype to medium batch, with the fixture kept so a repeat order runs on the same proven setup.

How the work runs

From drawing to shipping, in this order.

1
Model and drawingSTEP file plus the drawing. Where the two disagree, the drawing wins and we tell you which feature we followed.
2
Fixture and probingVice, soft jaws or a plate fixture, probed on the machine so the datum is measured rather than assumed.
3
Rough and finishStock left for stress relief and finishing; thin walls cut in more than one pass to control movement.
4
Inspection and packingCMM report on critical features, edges deburred by hand, parts packed with the report and the material certificate.

Materials, equipment and inspection

The practical detail.

Materials for this process

Aluminium 6061, 7075 and 2024, carbon and alloy steels, stainless including 17-4PH, tool steels such as H13 and S136, brass, copper and engineering plastics — from plate, bar or near-net forgings.

Equipment and inspection

3-, 4- and 5-axis vertical machining centres, with probing on the fixture to verify setup. Critical features checked on the CMM; flatness and parallelism on a granite plate.

Capacity

What the department can actually hold.

FeatureRangeWhat to know
Table travel1,200 × 600 × 500 mmLarger plates quoted as two setups or on the gantry
Simultaneous axes3, 4 and 55-axis for contoured faces and angled holes in one setup
Positional accuracy±0.01 mm±0.005 mm on a probed, temperature-stable setup
Min. wall0.5 mm in aluminium1.0 mm in steel; below that we quote with a straight warning
Surface finishRa 0.8 µm milledRa 0.4 µm with a finishing pass and a polished cutter
Fixture makingIn-houseSoft jaws and fixtures cut here, so first articles do not wait

Thin walls and deep pockets are the two features that change a milling price. Both are quotable, both need the drawing to say which face is the datum.

Parts we have machined

Real components, photographed on our own bench.

Milled pocket
Milled pocket3-axis · finishing pass
Mould plate
Mould plateMilling · wire EDM
Fixture work
Fixture work5-axis · one setup

Where the money goes

What actually drives the price of this work.

Straight answers

Questions buyers ask about this work.

Do you need a 3D model, or is a 2D drawing enough?

A STEP file is faster and removes interpretation. A dimensioned 2D drawing is enough for simple prismatic parts; for contoured surfaces we will ask for the model rather than guess at the surface.

Can you hold tolerance on a thin wall?

Yes, within reason, but the approach changes: rough, stress-relieve, then finish with light cuts and support on both sides. Tell us which wall matters and we will quote the process that protects it.

Who makes the fixture?

We do, and it stays with the job. If you reorder in six months the setup is already proven, which is why the second batch often costs less than the first.

Keep reading

Where this usually leads next.

Request a quotation

Send us a drawing. Get an engineering answer, not a price list.

Tell us the part, the material and the quantity. An engineer reviews your drawing and replies within one working day — usually with a suggestion on how to make it cheaper.