WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
84.58 Lathes (including turning centres) for removing metal (+). - Horizontal lathes : 8458.11 - - Numerically controlled 8458.19 - - Other - Other lathes : 8458.91 - - Numerically controlled 8458.99 - - Other The lathes (including turning centres) of this heading are machines used for surface-working metal by cutting away or otherwise removing metal. These machines can be distinguished fiom tools (pneumatic, hydraulic or with motor) for workin in the hand of heading 84.67, by the fact that they are usually designed to be mounted on the oor, or on a bench, or on a wall or on another machine, and are thus usually provided with a base plate, mounting frame, stand, etc. The heading includes : (1) Lathes, whether or not automatic, including slide lathes, vertical lathes, capstan or turret lathes, production (or copying) lathes. However, spinning lathes which b c t i o n by deforming the metal are classified in heading 84.63. (2) Spindle or axle turning machines, for turning sirnultaneously and symmetrically the two ends of the spindles or axles of large wheels, etc. (3) Turning centres, for removing metal. PARTS AND ACCESSORIES Sub'ect to the general provisions regarding the classification of arts (see the General Exp anatory Note to Section XVI), parts and accessories (other than t e tools of Chapter 82) of the lathes of this heading are classified in heading 84.66. R * * * The heading also excludes : (a) Machine-tools for working an material by removal of material, by laser or other light or photon beam, ultrasonic, electro-disc arge, electro-chemical, electron beam, ionic-beam or plasma arc processes; water-jet cutting machines (heading 84.56). g (b) Machining centres, unit construction machines (single station) and multi-station transfer machines, for working metal (heading 84.57). (c) Cutting-off machines (heading 84.61). (d) Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or non-electric motor (heading 84.67). (e) Machines and appliances for testing, of heading 90.24.
Subheading Explanatory Note. Subheadings 8458.11 and 8458.91 Numerically controlled machine-tools are, as a ou , h o w by their abbreviations CNC (Computer Numerical Control or NC (Numerical ~ o n t m ft h e terms "Computer Numerical Control" and %met-ical Controk can be regarded as synonymous. To qualify as a numerically controlled machinetool, the functions and movements of the machine-tool, tool or workpiece must be erformed according to pre-programmed instructions. The programmmg is normaIly executed in an N -specific language, for example, ISO-code. Programs and other data are stored in order to be accessible direct1 or subsequently. Numerically controlled machine-tools always integrate a control unlt (separate "stand a one" unit or bu!lt in), incorporating an automatic data processing machine or a microprocessor, as well as servo s stems, m order to achieve the desired motions of the machine-tool, tool or wor iece. CNC-machines, C C-lathes and NC-milling machines are examples of numerically controlled rnac 'ne-tools. d f % K If the control unit is not presented with the machine-tool the latter is nevertheless to be considered as a numerically controlled machine-tool provided it has the specific characteristics of this type of machine.
1.- This Chapter does not cover : (a) Millstones, grindstones or other articles of Chapter 68; (b) Machinery or appliances (for example, pumps) of ceramic material and ceramic parts of machinery or appliances of any material (Chapter 69); (c) Laboratory glassware (heading 70.17); machinery, appliances or other articles for technical uses or parts thereof, of glass (heading 70.19 or 70.20); (d) Articles of heading 73.21 or 73.22 or similar articles of other base metals (Chapters 74 to 76 or 78 to 81); (e) Vacuum cleaners of heading 85.08; (f) Electro-mechanical domestic appliances of heading 85.09; digital cameras of heading 85.25; (g) Radiators for the articles of Section XVII; or (h) Hand-operated mechanical floor sweepers, not motorised (heading 96.03). 2.- Subject to the operation of Note 3 to Section XVI and subject to Note 11 to this Chapter, a machine or appliance which answers to a description in one or more of the headings 84.01 to 84.24, or heading 84.86 and at the same time to a description in one or more of the headings 84.25 to 84.80 is to be classified under the appropriate heading of the former group or under heading 84.86, as the case may be, and not the latter group. (A) Heading 84.19 does not, however, cover : (i) Germination plant, incubators or brooders (heading 84.36); (ii) Grain dampening machines (heading 84.37); (iii) Diffusing apparatus for sugar juice extraction (heading 84.38);