- ISO 9001:2015 / IATF 16949:2016 / ISO 14001:2015. certificate numbers published and verifiable.
- Manufacturing to your print: the plant cuts to your design and reports against your drawing.
- 4 Axis Machining: Parts with features clocked around an axis: radial holes, flats, splines, cam profiles, and cylindrical parts that need secondary milling.
- Where it stops: The rotary axis cannot tilt the tool.
- Prototype and production run on the same floor and the same process.
How 4 axis machining works, in engineering terms
4 axis machining is three linear axes plus a rotary axis, usually the workpiece rotating about X.
The rotary axis converts a re-fixturing into an indexing move. A part that needed four setups on three axes is done in one clamping, so the datum never transfers and the geometric relationships between faces are cut by the machine rather than by the fixture.
How is the toolpath verified before it touches material?
Every programme is simulated offline before it reaches a machine: tool and holder collision, axis limits, and material removal against the stock model. On five-axis and mill-turn work this is not optional — the number of possible collision cases grows with each rotary axis, and a crash on a part that has already absorbed eight hours of cycle time is the expensive kind.
The verification step belongs in the quote. It is real engineering time, and a supplier that omits it is either simulating badly or not simulating at all.
How do you verify a supplier really has this capability?
Ask what the rotary axis is used for — indexing between features, or interpolating while cutting. Both are called four-axis and they are priced differently. Ask also how the part is driven: a part that cannot be gripped without distorting will not hold tolerance however good the machine is.
None of these questions are hostile and all of them are cheap. A plant with the capability answers them easily; a brochure cannot.
Three things that change the price without changing the part
On four-axis work the cost lever is usually the fixture, not the cutting. Features that share a single rotational datum should be arranged so one clamping reaches them all, and the part needs a clamp face and a drive feature the machine can actually grip. A part that needs re-clocking to reach one hole costs a setup and a datum transfer.
This is cheaper to settle at quote time than once parts already exist, because the changes are usually trivial on the drawing and significant on the machine.
How much capacity sits behind it?
a floor of 100-plus machines with depth in every relevant family, 50+ three-axis, 20+ four-axis, 20+ five-axis, 25+ turning centres, plus Swiss-type, grinding, and wire EDM.
Which standards the plant is certified to
Three certificates, each with a number you can check with the registrar: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En).
The IATF 16949 certificate excludes clause 8.3 (product design). That is normal for a build-to-print manufacturer and it is stated here rather than left for an auditor to discover: we cut to the drawings you provide, it does not originate the design.
What 4 axis machining is genuinely good for
Parts with features clocked around an axis: radial holes, flats, splines, cam profiles, and cylindrical parts that need secondary milling.
More expensive per hour than three axes, but on a four-face part the removed setups usually pay for it.
The honest boundary of 4 axis machining
The rotary axis cannot tilt the tool. An angled face still needs an angled fixture or a fifth axis.
This boundary is stated deliberately. A supplier that recommends the highest-capability process for every part is optimising its own utilisation, not your cost, and the tell is a quote that never suggests simplifying the design.
How the tolerance is actually measured
Milling and turning hold ±0.002 mm (turning) / ±0.003 mm (milling); precision grinding and wire EDM hold ±0.002 mm. A tolerance is only worth as much as the instrument that verifies it, so the floor runs 20+ inspection instruments alongside the machines, CMM for dimensional and true position, vision and profile instruments for surface and geometry, hardness testers and coating gauges for heat treatment and plating, and XRF for incoming material composition against the mill certificate.
The rule that matters on a drawing is that a tolerance is held by the process, not by the machine. Where a feature is tight, the finishing pass is separated from roughing, the part is allowed to stabilise, and the measurement is taken at a controlled temperature — a part measured warm is not the part the customer receives.
Which entity is responsible for the work?
Dongguan Zhuohang Ltd, Registration No. 91441900MA4UWT6X39, in operation since 2005.
What the extra axes actually buy
The axis count is about setups, not precision. A 3-axis machine cuts from one direction, so a part with features on several faces needs to be re-fixtured between operations - and every re-fixture introduces a small error. A 4-axis machine adds rotation, and a 5-axis machine can reach five sides in one setup, so the features on several faces stay in the same coordinate frame and line up. For a part that is a prismatic block, 3-axis is enough and cheapest; for a part with angled or multi-face features, the extra axes buy accuracy and fewer operations. You choose the axis count for the geometry, not by habit.
How to read an axis-based quote
If a part genuinely needs 5-axis work, the quote reflects one setup and tighter feature relationships; if a shop puts a 3-axis part on a 5-axis machine and charges for it, you are paying for capability the geometry does not use. This floor runs 3-, 4- and 5-axis machines including the Mazak VARIAXIS I-600 five-axis and the INTEGREX I-250H S mill-turn, at ±0.003 mm milled. Contact Felipe Iglesias at [email protected] or +86 13126536955 with the drawing and ask which axis count the geometry actually justifies.
How to verify the claim in one email
The fastest way to separate a real floor from a brochure is to ask for the machine list and the certificate numbers - and this facility answers in one email. Dongguan Zhuohang Ltd operates 100+ CNC machines across 6,800 m² in Hengli Town, Dongguan: Mazak VARIAXIS I-600 five-axis, INTEGREX I-250H S mill-turn, Brother SPEEDIO, and TSUGAMI, STAR and CITIZEN Swiss lathes. Inspection is on a Hexagon CMM with the 10:1 gauge rule, certification is to ISO 9001:2015, IATF 16949:2016 and ISO 14001:2015, and critical characteristics run at Ppk 1.67 initial and Cpk 1.33 in production.
Worldwide buyers across Europe, the Americas, Asia, Oceania and Africa are supplied from Dongguan. MOQ is 1 piece, lead times run roughly 3 / 7 / 30 days, and the quote from Felipe Iglesias ([email protected], +86 13126536955) comes back with the routing and the capability evidence together.
Take the next step
One drawing and one quantity is the whole hand-off. Send a STEP or IGES model and a 2D drawing with the tolerances, datums, material grade and finish, state the quantity and lead time, and the reply is an itemised quote - material, setup, cycle time, inspection - rather than a round number. If the drawing is incomplete, send what you have and the open questions; the point is to open the conversation, not to wait for a perfect package.
Contact Felipe Iglesias at [email protected] or +86 13126536955. MOQ is 1 piece, lead times run about 3 / 7 / 30 days, and the service area covers Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa, shipped worldwide from Dongguan.
Tolerance and surface finish reference
±0.003 mm milled, ±0.002 mm turned, and ±0.002 mm ground or wire-cut, all verified on a Hexagon CMM against the datum scheme. Surface finishes span Ra 0.8 to 3.2 µm as-milled, Ra 0.2 to 0.4 µm ground, and Ra 0.05 to 0.1 µm polished. The 10:1 gauge rule governs every feature - the instrument must resolve ten times finer than the tolerance it checks. And the datum is what makes the tolerance real: read against two different datums, the same callout gives two different parts, so state the datum and the convention, ASME Y14.5 or ISO.
De-risking a first order
Start with a handful of parts to confirm the routing and the tolerance, then scale. The same machines, the same inspection bench and the same certificate numbers apply to a single piece and a production run alike, so a small first batch is the proof that a large one will hold the same numbers.
What this shop actually runs
Capability evidence should come as specifics, not slogans. Behind this guide is a 6,800 m2 plant in Dongguan, China running 100+ CNC machines with 100+ staff. The machine list by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Practical for compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Practical for prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Practical for long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Practical for shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Practical for hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerance: ±0.003 mm CNC milling / ±0.002 mm CNC turning / ±0.002 mm grinding and wire EDM. Capability: Ppk >= 1.67 initial on key characteristics, Cpk >= 1.33 ongoing.
Certificates: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, with design clause 8.3 excluded, stated openly) and ISO 14001:2015 (116024/B/0001/UK/En), issued to Dongguan Zhuohang Ltd, registration 91441900MA4UWT6X39, founded 2005.
Where we ship: Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa — plus other countries and regions worldwide, shipped from our base in Dongguan, China.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Ask the four questions before you commit
Registration number, machine depth, certificate numbers, and a walk of the floor. Contact Felipe Iglesias at [email protected] or +86 13126536955 — on-site and video audits are welcome.
Frequently Asked Questions
How is material traceability maintained?
Incoming stock is checked against the mill certificate — composition by XRF, hardness where specified — and traceability is held per heat or per batch as the certificate defines it.
Are you a manufacturer or a trading company?
A manufacturer. The legal entity is Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39), operating a 6,800 m² facility with a hundred-odd machines and 100+ staff in Dongguan. Factory visits are welcome.
What parts suit 4 axis work best?
Parts with features clocked around an axis: radial holes, flats, splines, cam profiles, and cylindrical parts that need secondary milling. On the wrong geometry the extra axes cost programming time and buy nothing.
What materials do you machine?
Aluminum, stainless steel, titanium, brass, copper, and Inconel for metals; PEEK and Delrin (POM) for plastics. Material certificates are verified on incoming stock.
Is 4 axis always better than fewer axes?
No. The rotary axis cannot tilt the tool. An angled face still needs an angled fixture or a fifth axis. The right axis count is the smallest one that reaches every feature with a short enough tool to hold the tolerance.
What happens if the first article does not conform?
In short, The nonconformance is documented and the corrective action is agreed before any further parts are made. Whether the replacement cost sits with the plant or the customer depends on where the deviation came from, which is why the revision and the drawing standard are confirmed in writing at the start.
What is the difference between a prototype build and a production build here?
Usually only quantity and scheduling. Both run on the same machines and the same process, which is what makes a later ramp a scheduling change rather than a re-qualification.
Continue reading: 3 Axis Swiss CNC Machining · 5 Axis Swiss CNC Machining · Multi Axis Swiss CNC Machining
Standards referenced on this page
- ASTM A582/A582M-12 — Standard Specification for Free-Machining Stainless Steel Bars
- ASTM B348/B348M-21 — Standard Specification for Titanium and Titanium Alloy Bars and Billets
- ISO 9001 — Quality management systems — Requirements