JB/T 9948-1999 This standard is a revision of ZB J65 005-88 "Static rigidity of single-axis woodworking milling machine". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the static rigidity index and test method of single-axis woodworking milling machine. This standard is applicable to single-axis woodworking milling machine. This standard was first issued on November 10, 1988. JB/T 9948-1999 Static rigidity of single-axis woodworking milling machine JB/T9948-1999 standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T9948—1999
Single-axis Woodworking Milling Machine
1999-05-14 Issued
Static Stiffness
2000-01-01 Implementation
National Machinery Industry Week
JB/T9948-19
Static Stiffness" revision plan, only in accordance with the US regulations during the revision. This standard is a modification of ZBJ650058 single-axis non-mirror, the technical content has not changed,
This standard replaces 2B16505-88 from the date of implementation. This standard is proposed by the National Woodworking Machine Tool Standardization Technical Committee, and the sub-standard is owned by the Chazhou Woodworking Machine Tool Research Institute. This standard was drafted by: Shanghai Machinery Industry Corporation. The drafters of this standard are: Lin Zhiguang, Han Wenchao, and others. This standard was first issued in November 1988. National
People's Republic of China Machinery Industry Standard
Single-axis woodworking milling machine static stiffness
This standard specifies the static stiffness index and test method of single-axis woodworking milling machine. Standard calibration for single-axis woodworking milling machine,
Referenced Standards
JB/T9948—J999
16S-BB
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard is revised, the versions shown are all valid. The standard will be approved by the parties using this standard. The possibility of using the latest version of the following standards will be discussed. GBT135701992 Single-axis woodworking. 1 Milling machine accuracy GH/14384-1W3 General technical conditions for woodworking machine tools 3 Niu Xia Qiu
3! The machine tool must be put into operation before the static accuracy inspection is carried out in accordance with GBT1434. No abnormal situation is allowed. 3.2 The machine tool must be in a normal state of adjustment and preparation for operation when the static calibration inspection is carried out. The geometric accuracy is carried out in accordance with GBT13570 and the accuracy is qualified. wwW.bzxz.Net
3.3 When the machine tool is subjected to static calibration inspection, the lifting parts of its workbench or spindle must be clamped. 5.4 When the machine is subjected to static quality inspection, the loading direction should be consistent with the feed direction before cutting. 4 Machine tool static rigidity index
The static rigidity index inside the machine should meet the requirements of Table 1. Table
Maximum milling height H
100~120(120)
Machine tool static rigidity inspection method
Additional force P
5.1. The machine tool parts and the application point of the additional force shall comply with the provisions of Table 2. State Machinery Industry Bureau 1999-05-14 approved your program civil
2000-01-01 implementation
The height of the fire tile system is the distance from the allowable point of P to the hand shaft diameter
after the workpiece is specially made!
1 Distance from workbench to force application point 1.
5.2 Inspection method
JBT 9948—1999
100-120 (120 in this paper)
As shown in Figure 1, the indicator probe fixed on the workbench is vertically touched to the surface of the test shaft or the main shaft, and then the test shaft or the main shaft is loaded at the corresponding position of the indicator probe, and it is uniformly increased to the specified value, and the change of the indicator reading is recorded. After rotating the work shaft 180°, the above inspection is repeated: the arithmetic average of the two inspection results is the displacement
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