BS ISO 13041-1:2020 Test conditions for numerically controlled turning machines and turning centres Part 1: Geometric tests for machines with horizontal workholding spindle(s).
4.6 Measuring instruments
Measuring instruments indicated in the tests described below are only examples. Other instruments capable of measuring the same quantities and having the same, or a smaller, measurement uncertainty may be used.
When a dial gauge is referred to, it can mean not only dial test indicators (DTI) but any type of linear displacement sensor such as analogue or digital dial gauges, linear variable differential transformer (LVDTs), linear scale displacement gauges, or non-contact sensors, when applicable to the test concerned.
Similarly, when a straightedge is referred to, it can mean any type of straightness reference metrological standard, such as a laser beam, special optics, a granite or ceramic or steel or cast iron straightedge. one arm of a square, one generating line on a cylindrical square, any straight path on a reference cube, or a special, dedicated artefact manufactured to fit in the T-slots or other references.
In the same way, when a square is mentioned, it can be any type of squareness reference artefact, such as a granite or ceramic or steel or cast-iron square, a cylindrical square, a reference cube, or a special dedicated artefact.
Valuable information for measuring instruments are available in ISO/TR 230-11.
4.7 Diagrams
In this document, for reasons of simplicity, the diagrams associated with geometric tests illustrate only one type of machine.
4.8 Linear motions
For simplicity, all the machine examples shown in the Figures and Tables use the axis designation of a letter and a number (e.g. Xl, X2) as defined in ISO 841:2001, 6.1. In all examples, the use of the letters U, V, or W can be substituted.
4.9 Tool turret and tool spindle(s)
As defined in 32. turning centres have not only stationary tools hut also power-driven rotary tools, which means that the turret should also have power drive mechanisms. When the number of tools expected to be used exceeds the capacity of the turret, an automatic change of tools in the turret, or a change of turret, may be provided.
Figure 3 shows typical types of tool turrets and tool spindles.
4.10 Machine classifications
The machine tools considered in this document are divided into two basic configurations (see Table I.
Figure 1 and Figure 2):
— Type A: Machine tools with tallstock;
— Type B: Machine tools without tallstock.
Type A-Machine tools can be generally classified into two further groups:
— Group A-i: With one turret;
— Group A-2: With two turrets.
NOTE There are machines with multiple turrets. Test described in this document apply to all turrets.BS ISO 13041-1 pdf download.