This part specifies the requirements and inspection methods for the geometric accuracy and working accuracy of horizontal band sawing machines. This section applies to horizontal band saws with a maximum sawing diameter of 250mm~2000mm. Horizontal band saws with a maximum sawing diameter less than 250mm or greater than 2000mm may refer to this section. JB/T 4318.3-2002 Horizontal band sawing machine Part 3: Accuracy inspection JB/T4318.3-2002 Standard download and decompression password: www.bzxz.net

ICS25.080.60
J57
JB
Machinery Industry Standard of the People's Republic of China
JB/T4318.3—2002
replaces JB/T4318.3— 1996
Horizontal band sawing machine
Part 3: Accuracy testing
Horizontalbandsawingmachine
Part3: Testingoftheaccuracy
Released on 2002-07-16||tt| |Implemented on 2002-12-01
Foreword issued by the State Economic and Trade Commission of the People's Republic of China
Scope
2
Normative reference documents
General requirements| |tt||3
4
geometric accuracy inspection,
working accuracy inspection
5
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JB/T4318.3—2002
Previous
JB/T4318 "Horizontal Band Sawing Machine" is divided into four parts: Part 1: Series type spectrum:
Part 2: Parameters:
Part 3: Accuracy test:
Part 4: Technical conditions.
This part is Part 3 of JB/T4318. | |tt |
The technical conditions G5 tolerance and inspection method of test pieces for accuracy inspection are recommended and changed
Cancel the G6 geometric accuracy inspection item in JB/T4318.1-1996: Add G7 " Geometric accuracy item "Repeat positioning accuracy of the feeding mechanism": Added P3 "Repetition accuracy of saw fragment length" work accuracy item. This part is proposed by China Machinery Industry Federation. This part is under the jurisdiction of the National Metal Cutting Machine Tool Standardization Technical Committee. The unit responsible for drafting this section: Changsha Sawing Machine Research Institute. The main drafters of this section: Xu Sun, Chen Tiejian, Jiang Ping. The previous versions of the standard replaced by this part are: JB4319-1986, JB/T4318.3-1996. II
1 Scope
Horizontal band sawing machine
Part 3: Accuracy inspection
This part specifies the geometric accuracy and working accuracy requirements for horizontal band sawing machines Testing method. This section applies to horizontal band saws with a maximum sawing diameter of 250mm to 2000mm. Horizontal band saws with a maximum sawing diameter less than 250mm or greater than 2000mm may refer to this section. 2 Normative reference documents
JB/T4318.32002
The provisions in the following documents become the provisions of this part through the reference of this part of JB/T4318. For dated reference documents, all subsequent amendments (excluding corrigenda) or revisions do not apply to this section. However, parties to an agreement based on this section are encouraged to study whether the latest versions of these documents can be used. . For undated referenced documents, the latest version applies to this section. GB/T17421.1-1998 General Inspection Principles for Machine Tools Part 1: Geometric accuracy under no-load or finishing conditions. JB/T7963.2 Metal cutting band saw blades Part 2: Basic dimensions and tolerances JB/T7963.3 Metal cutting band saw blades Part 3: Types and characteristics 3 General requirements
3.1 Refer to GB/T17421.1-1998 3.1 Adjust the installation level of the machine tool. Place a level in the center of the workbench. The readings of the level in either the longitudinal or transverse direction do not exceed the specifications in the instruction manual. 3.2 When the actual measured length is different from the length specified in this standard, the tolerance shall be converted to the measurable length according to the provisions of 2.3.1.1 in GB/T17421.11998. When the conversion result is less than 0.01mm, it is still calculated as 0.01mm. 3.3 When inspecting various geometric accuracy, manual or machine tool low-speed movement should be used. 3.4: The working accuracy test of the machine tool should be carried out on the specified test piece. The test piece is made of 45 steel, in normalized state, with a hardness of 170HBS ~ 200HBS, and the hardness is uniform. The surface roughness R of the specimen should not be greater than 6.3um. 3.5 For large-sized forged castings and workpieces without surface treatment, the working accuracy can be directly measured by placing a square ruler on the horizontal datum surface of the machine tool workbench or tested by other indirect measurement methods. 3.6 The bimetal band saw blade used when testing the geometric accuracy and working accuracy of machine tools must comply with the standards of JB/T7963.2 and UJB/T7963.3.
3.7 The order of accuracy inspection items listed in this standard does not represent the actual order of inspection. In order to facilitate the assembly and disassembly of inspection tools and inspection, inspections can be carried out in any order
3.8 According to the agreement between the user and the manufacturer, the inspection items and inspection methods can be appropriately increased, decreased, and adjusted. JB/T4318.32002
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