JB/T 4373-1999 JB/T 4373-1999 Horizontal milling and boring machine inspection conditions accuracy inspection Part 4: Planer machine tool with moving column JB/T4373-1999 Standard download and decompression password: www.bzxz.net

ICS 25.080.20
J54
JB
Machinery Industry Standard of the People's Republic of China
JB/T4373-1999
neqISO3070-4:1998||tt ||Test conditions for boring and milling machines with horizontal spindleTesting of the accuracyPart 4: Planer type machines with movable column1999-10 -08 Release
National Machinery Industry Bureau
Release
2000-03-01 Implementation
JB/T 4373—1999
Foreword||tt| |ISO Preface
1 Range
2
3
6
Quotation standards
Axis motion coordinate naming
General Requirements
Geometric accuracy inspection
Working accuracy inspection
Item
Times
34
JB/T 4373-1999||tt| |Foreword
This standard is non-equivalent to ISO3070-4: 1998 "Horizontal milling and boring machine inspection conditions accuracy inspection Part 4: Planer machine tools with moving columns", JB4373-86 "Planer horizontal milling machine" Accuracy" revision. The main technical differences between this standard and ISO.3070-4:1998: The name of the G19 inspection item is changed from "Deflection of the chain axis in its movement direction (Z-axis)" to "Straightness of the boring axis movement (Z-axis)" :
In the G14 "positioning accuracy of workbench 0°, 90°, 180° and 270°" inspection item, words such as "Note: This inspection is only applicable to ordinary horizontal milling and boring machines" are added ; - The tolerance value of 5.10 "Positioning Accuracy and Repeatable Positioning Accuracy of CNC Axis" has been technically modified; - Chapter 6 "Working Accuracy Inspection" has been supplemented with linear and arc interpolation milling accuracy inspection and boring holes. Changes in the important technical content of this standard to JB4373-86 for distance accuracy inspection: The scope of application of the standard has been expanded, that is, it is also applicable to CNC horizontal milling and boring machines. The following inspection items have been added:
a) Angle deviation of G2 column movement (W axis); b) Angle deviation of G4 table movement (× axis): c) G6 spindle box vertical movement (Y axis) Angle deviation: d) Verticality of G22 ram movement (Z axis) to spindle box movement (Y axis): e) Inspection of G29~G34 positioning accuracy and repeatable positioning accuracy: f) P11-P13 linear and arc insertion Inspection of additional milling accuracy and boring pitch accuracy. The following inspection items have been cancelled:
a) The straightness of the reference T-shaped groove of the G6 worktable; b) The straightness of the G23 ram movement.
This standard replaces JB4373-86 from the date of implementation. This standard was proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is under the jurisdiction of the Drilling and Boring Machine Branch of the National Metal Cutting Machine Tool Standardization Technical Committee. This standard was drafted by: Zhongjie Friendship Factory, Kunming Machine Tool Co., Ltd., Hanchuan Machine Tool Factory, Wuhan Heavy Machine Tool Factory, Wuhu Heavy Machine Tool Factory.
The main drafters of this standard: Hou Juan, Xu Liting, Tang Qishou, Qu Yayun, Feng Yun, Zhao Guoquan, and Li Yingchun. This standard was first published in December 1986. JB/T4373—1999
ISO Preface
ISO (International Organization for Standardization) is a joint organization of national standardization organizations (ISO members) around the world. The development of international standards is usually completed by ISO technical committees. Every ISO member who is interested in a topic established by a technical committee has the right to express his or her opinions on that technical committee. International organizations, official or non-official institutions related to ISO may also participate in this work. ISO works closely with the International Electrotechnical Commission (IEC), which is responsible for electrical standards. The draft international standard accepted by the technical committee is first sent to all members for comments. According to the ISO charter, at least 75% of the participants must vote to agree before the international standard is adopted. The international standard ISO3070-4 was formulated by the SC2 Metal Cutting Machine Tool Acceptance Conditions Subcommittee of the ISO/TC39 Machine Tool Technical Committee.
ISO3070-4 replaces ISO3070-3.
The general name of the ISO3070 standard is "Inspection Conditions for Horizontal Milling and Boring Machines - Accuracy Inspection". It includes the following parts: Part 0: General Principles (the next edition will be changed to Part 1): - Part 2: Benchtop machine tools (formerly Part 1); Part 3: Floor-standing machine tools (formerly Part 2): Part 4: Planing tabletop machine tools with moving columns (formerly Part 3). The appendix of ISO3070-4 is a prompt appendix. Scope
1
Machinery Industry Standard of the People's Republic of China
Horizontal milling machine test conditions accuracy test
Part 4: Planer machine tool with moving column Test conditions for boring and milling machineswithhorizontal spidleTesting of theaccuracyPart4:PlanertypemachineswithmovablecolumnJB/T4373-1999
neqiso3070-4:1998
replaces JB/T4373-86
This standard specifies ordinary and CNC horizontal milling mirror machines (Innovative desktop machine tools with moving columns) geometric accuracy, axis positioning accuracy and repeatable positioning accuracy, inspection methods and tolerances for working accuracy. This standard applies to ordinary and CNC horizontal milling mirror machines (planing table machine tools with moving columns). Reference Brown Standard
2
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards, GB/T 1182—1996
GB/T17421.1—-1998
GB/T17421 .22000
Nomenclature of 3-axis motion coordinates
General rules, definitions, symbols and graphic representations of shape and position tolerances for machine tools Part 1: Several directions of machine tools under no-load or fine caching conditions General Principles for Precision Machine Tool Inspection Part 2: Determination of Positioning Accuracy and Repeatable Positioning Accuracy of CNC Axis 3.1 The naming of axis motion coordinates in this standard is shown in Figure 1. Auxiliary (1 axis)
Figure 1
Axis motion coordinates
National Machinery Industry Bureau approved on 1999-10-08 and implemented on 2000-03-01
JB/T4373— 1999
The direction of rotation of the 3.2T table is represented by the letter "B". 3.3 The direction of movement of the radial slider of the flat rotating disk is represented by the letter "U". 4 General requirements
4.1 All linear dimensions in this standard are expressed in millimeters (mm); angular dimensions are expressed in degrees (°), and angular deviations are mainly expressed in the form of ratios. In some cases, In order to express it more clearly, it is also expressed in microradians (μrad) and [arc seconds (\). The conversion relationship is shown in the following expression:
0.01/1000=10 × 10-=10 μ rad ~24.2 When using this standard, you must refer to the provisions of GB/T17421.1, especially the installation before accuracy inspection , spindle and other components dry running temperature, inspection methods and accuracy of inspection tools. 4.3 The order of geometric accuracy inspection items is arranged according to machine tool components and does not represent the actual inspection order. During inspection, the inspection sequence can generally be arranged according to the requirements for assembly and disassembly of inspection tools and inspection convenience, as well as thermal inspection items. The bed should be tightly aligned during adjustment of installation level and accuracy inspection. 4.4 It is not necessary to test all the inspection items specified in this standard. Users can negotiate with the manufacturer to determine the corresponding inspection items as needed, but they must be specified in the order agreement. 4.5 The measuring instruments proposed in each inspection item are only examples. Other measuring instruments with the same indicated value and at least the same accuracy may be used. The indicator should have a resolution of 0.001mm or better. 4.6 Work accuracy inspection should be carried out under fine cutting instead of rough machining, which can easily generate considerable cutting forces. 4.7. When the actual measured length is different from the value specified in this standard, the given tolerance value should be converted according to the provisions of 2.3.1.1 in GB/T17421.1-1998. The minimum conversion value of the tolerance is 0.005mm. 2
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