CNC Machining Costing

Casting purchase price (¥/kg · for the casting basis only, by grade)Restore default

The default casting price is an estimate from common industry knowledge of small-batch purchase prices (estimated, to be calibrated against real orders); the casting material cost is the casting net weight × the unit price in this table, with no further purchasing loss factor applied.

Forging delivered price (¥/kg · for the forging blank basis only, an as-delivered price that includes forging loss)Restore default

The default forging price is an estimate from common industry knowledge of small-batch forging delivered prices (estimated, to be calibrated against real orders); the forging material cost is the as-delivered forging blank weight × the unit price in this table, with no further purchasing loss factor applied; custom forging is a proxy entry (type the ¥/kg for a stainless steel or aluminium forging by hand, with density and difficulty proxied by 45#).

Tool cost = total cutting time × the consumption rate for the family (pure tool wear amortisation, estimated 2026-10, to be calibrated against real orders; it excludes tool holders and the labour of changing tools, and tool-change time sits in the allowance-time basis); wear-prone tools such as taps are not listed separately and are roughly folded into the family rate (to be calibrated against the ledger). The ¥5/min ceiling is there for hand-written overrides on extreme single-edge materials such as PCBN.

Applies only to the **wire EDM rows** (amount-type rows) in ③ Machining features: amount = max(thickness, 20mm) × accumulated priced cutting length × unit price + number of start holes × start hole fee, with the hard-material factor applied on top for the titanium family. The fast wire figure of ¥0.008/mm² comes from survey area-price figures (0.005–0.01) and sits above the middle of that range — converted to a time basis at 1200mm²/h × ¥5/h it works out at about ¥0.0042/mm², nearly 2× apart, so **pick one of the two supplier bases** and adjust it to your own supplier; the slow wire four-pass tiers are an **independent empirical price table that has not been cross-checked against a ¥60/h basis**; Reference area rates from desk research (including consumables and depreciation); whether programming, clamping, transport and tax are charged on top is still to be confirmed with the local supplier; every band is estimated as of 2026-10 and awaits calibration against real orders.

setup cost = programming and proving time × the rate + fixture cost; when repeat order (programme reused) is switched on, both go to zero together.

The unit follows the post-processing pricing basis set in ④: per kg = ¥/kg (default) · per piece = ¥/piece · per area = ¥/dm², and the priced quantity is the blank weight, the batch piece count or the surface area entered by the estimator respectively.

Heat treatment cost = max(batch × priced weight per piece × list price, minimum furnace charge), counted once at order level (it does not go to zero on a repeat order); the priced weight per piece follows the blank form: blank weight, casting net weight or as-delivered forging blank weight. The list price is taken as the midpoint of the association guidance range (a proxy for fast budgeting, not a supplier quotation); when you request a quotation, confirm the material grade, the target hardness or case depth, distortion straightening and report fees at the same time; the minimum furnace charge defaults to ¥0, which means purely batch weight × list price (this supplier basis has to be calibrated by hand).

The first-article inspection fee is a standalone order-level amount row (¥/batch, counted once and spread over the batch); it defaults to ¥0 and is entered by hand to the customer's inspection requirement; it is unrelated to a repeat order (the programme can be reused, and whether inspection is charged again depends on the order); note that it may already sit inside the order-level costs, so avoid counting it twice.

Tax applies to the quotation layer only: the cost layer, the band and the floor always stay on a pre-tax basis; when the switch is off (tax-exclusive, the default) the tax row records 0 and the tax-inclusive quote equals the pre-tax quote.