GB/T 16462.1-2023Test conditions for numerically controlled turning machines and turning centres - Part 1: Geometric tests for machines with horizontal workholding spindle (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document is Part 1 of GB/T 16462 "Inspection Conditions for CNC Lathes and Turning Centers": GB/T 16462 has released the following part:

---Part 1: Inspection of geometric accuracy of horizontal machine tools;

---Part 2: Inspection of geometric accuracy of vertical machine tools;

---Part 3: Geometric accuracy inspection of inverted vertical machine tools;

---Part 4: Inspection of positioning accuracy and repeatable positioning accuracy of linear and rotary axes;

---Part 5: Inspection of feed rate, speed and interpolation accuracy;

---Part 6: Accuracy inspection of finished specimens;

---Part 7: Evaluation of contour characteristics in the coordinate plane;

---Part 8: Assessment of thermal deformation:

This document replaces GB/T 16462.1-2007 "Inspection Conditions for CNC Lathes and Turning Centers Part 1: Geometric Accuracy of Horizontal Machine Tools" Inspection", compared with GB/T 16462.1-2007, in addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) The scope of application of the document has been changed (see Chapter 1, Chapter 1 of the:2007 edition);

b) The terms and definitions of "operating mode of machine tools" are deleted (see 3.3 of the:2007 edition), and the terms and definitions of "tool holder" are added (see 3.3);

c) Added requirements and instructions for inspection tools (see 4.6);

d) Delete "dimension range of machine tools" (see 4.11 of the:2007 edition);

e) Added requirements for non-inspection axes (see 4.13);

f) Change "refer to the corresponding provisions of the standard" in the inspection method to "according to the provisions of the corresponding provisions of the standard" (see G2~ in Chapter 5 G15, G17~G26, G30,:2007 version of G1~G24);

g) Added straightness inspection of Z-axis, X-axis, and Y-axis motion (see G3~G5 in 5:2);

h) G6 has been changed to refer to the parallelism of the workpiece spindle axis to the Z-axis motion (see G6 in 5:3, G3 in 5:2 in the:2007 edition);

i) Added the verticality test of X-axis motion, Y-axis motion and Z-axis motion (see G7 and G8 in 5:3);

j) Changed the perpendicularity of the Y-axis motion to the X-axis motion, the perpendicularity of the X-axis motion to the C' axis, and the coaxiality of the sub-spindle and the workpiece spindle:

Degree requirements (see G9, G10, G12 of 5:3, G5, G4, G6 of:2007 version 5:2);

k) Changed the angular error requirements for Z-axis motion and X-axis motion (see G13 and G14 of 5:4, G7 and G8 of:2007 version 5:3);

l) The consistency requirements for the simultaneous movement distance of the tailstock W axis and the saddle Z axis have been changed (see G16 of 5:5, 5:4 of the:2007 edition G10);

m) Changed the parallelism requirements of the tailstock sleeve axis and the tailstock sleeve taper hole axis for Z-axis motion (see G17 and G18 of 5:5,:2007 G11, G12 of version 5:4);

n) Changed the offset requirements for the Z-axis movement of the workpiece spindle center and tailstock center (see G19 of 5:5, 5:4 of the:2007 edition G13):

This document is modified to adopt ISO 13041-1:2020 "Inspection Conditions for CNC Lathes and Turning Centers Part 1: Geometric Accuracy of Horizontal Machine Tools" test":

The technical differences between this document and ISO 13041-1:2020 and their reasons are as follows:

---Replaced ISO 230-1 (see Chapter 1, 4:2) with GB/T 17421.1-2023 to increase operability and facilitate the preparation of this document application;

---Replaced ISO 230-7:2015 and ISO 230-7 (see 4.2) with normatively quoted GB/T 17421.7-2016, adding possible Operability to facilitate the application of this document;

---Change "refer to ISO 230" to "implement GB/T 17421.1-2023 and GB/T 17421.7-2016" (see 4.2), add Operability to facilitate the application of this document;

---Change "refer to the corresponding provisions of the standard" in the inspection method to "according to the provisions of the corresponding provisions of the standard" (see G2~ in Chapter 5 G15, G17~G26, G30), suitable for my country's national conditions and consistent with other domestic machine tool accuracy inspection standards;

--- Added the requirement of tolerance "0:080/1000 (16")" when X >1000 in the G14 inspection item (see G14 in 5:4), because X the stroke of axis motion (tool holder skateboard motion) can exceed 1000, so this content is added:

The following editorial changes have been made to this document:

---Deleted the content of "note" in Figure 1 and Figure 2;

---Deleted the "measured deviation" column in the accuracy inspection table (see G1~G30 in Chapter 5);

---Deleted Appendix B (informative) "Non-ISO language terms":

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

Introduction

GB/T 16462 "Inspection Conditions for CNC Lathes and Turning Centers" belongs to the general inspection standards for CNC lathes and turning centers and establishes the Principles and requirements for accuracy and performance testing:

GB/T 16462 "Inspection Conditions for CNC Lathes and Turning Centers" consists of eight parts:

---Part 1: Inspection of geometric accuracy of horizontal machine tools: The purpose is to standardize the geometric accuracy inspection of CNC horizontal lathes and turning centers methods and corresponding requirements:

---Part 2: Inspection of geometric accuracy of vertical machine tools: The purpose is to standardize the geometric accuracy inspection of CNC vertical lathes and turning centers methods and corresponding requirements:

---Part 3: Inspection of geometric accuracy of inverted vertical machine tools: The purpose is to standardize inverted CNC vertical lathes and inverted vertical turning machines Central geometric accuracy inspection methods and corresponding requirements:

---Part 4: Inspection of positioning accuracy and repeatable positioning accuracy of linear and rotary axes: The purpose is to standardize CNC lathes and turning Inspection methods and corresponding requirements for the positional accuracy of the center's linearity and rotation axis:

---Part 5: Inspection of feed rate, speed and interpolation accuracy: The purpose is to standardize the spindle speed, linearity of CNC lathes and turning centers the movement accuracy inspection method and corresponding requirements for the feed rate of the axis and the trajectory generated by the simultaneous movement of the axis:

---Part 6: Accuracy inspection of finished specimens: The purpose is to standardize a series of cutting inspection methods for standard specimens under finishing conditions:

laws and corresponding requirements:

---Part 7: Evaluation of contour characteristics in the coordinate plane: The purpose is to standardize the contour feature inspection of CNC lathes and turning centers:

Check the method:

---Part 8: Assessment of thermal deformation: The purpose is to standardize the thermal deformation of machine tool structures and positioning systems of CNC lathes and turning centers assessment method:

This document is Part 1 of GB/T 16462, which mainly specifies the geometric accuracy of ordinary precision CNC horizontal lathes and turning centers:

The inspection method can provide basis and guidance for the geometric accuracy inspection of CNC horizontal lathes and turning centers:

Based on actual machine tool inspection needs, this document modifies the geometric accuracy inspection items of some CNC horizontal lathes and turning centers, adding the straightness of Z-axis, X-axis and Y-axis motion increases the perpendicularity of X-axis motion and Y-axis motion to Z-axis motion: In addition, in order to inspect the workpiece Error motion of the spindle and tool spindle rotation axes: This document adds the rotation accuracy inspection content of the workpiece spindle and tool spindle:

Inspection conditions for CNC lathes and turning centers Part 1: Inspection of geometric accuracy of horizontal machine tools

1 Scope

This document specifies ordinary precision CNC horizontal lathes and turning machines in accordance with GB/T 17421.1-2023 and GB/T 17421.7-2016:

Requirements and methods for geometric accuracy inspection of cutting centers (see definitions in 3:1 and 3:2) and corresponding tolerances:

Where applicable, this document also applies to horizontal turret lathes and single-axis automatic lathes:

This document explains the different concepts, different configurations and common features of CNC horizontal lathes and turning centers and provides terminology for control axes and name:

This document is only applicable to the accuracy inspection of machine tools: It does not apply to the operation inspection of machine tools (such as machine tool vibration, abnormal noise, component failure, etc:) crawling, etc:) and machine tool characteristics inspection (such as speed, feed), because these inspections are usually performed before accuracy inspection:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations for undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 17421.1-2023 General principles for inspection of machine tools Part 1: Geometric accuracy of machine tools under no-load or quasi-static conditions (ISO 230-1:2012,IDT) GB/T 17421.7-2016 General Inspection of Machine Tools Part 7: Geometric Accuracy of Rotary Axis (ISO 230-7:2006, IDT) GB/T 19660-2005 Industrial automation systems and integrated machine tools numerical control coordinate system and motion naming (ISO 841:2001,IDT)

3 Terms and definitions

The following terms and definitions apply to this document:

CNC latheNCturningmachine A lathe operating under numerical control or computer numerical control:

turning centerturningcentre A CNC lathe equipped with a power-driven tool device and the ability to position the workpiece spindle about its axis:

Note: This type of machine tool may include additional features such as automatic tool change from a tool magazine:

tool holdertoolturret A multi-tool clamping device capable of positioning cutting tools to complete machining operations: