JB/T 9168.6-1998 JB/T 9168.6-1998 General process code for cutting machining Boring JB/T9168.6-1998 Standard download decompression password: www.bzxz.net

Ks 25.020
Standard of the Machinery Industry of the People's Republic of China
JB/T9168.1~9168.13-1998
Common process instructions for cutting1998-11·16 Issued
National Machinery Industry Standard
199812-01 Implementation
1 Fan Rat
Standard of the Machinery Industry of the People's Republic of ChinaWww.bzxZ.net
Common process instructions for cutting
Cowinnn praress instructons for euttingProcexn instructions for This standard specifies the basic rules to be followed in mirror machining and is applicable to all enterprises. For example, the pre-processing should also comply with the provisions of IB/T9168.1. 2 Reference standards
JB/T9168.61998
Contents / 27,6 Net
The texts newly included in the following standards are all included in this standard through reference in the standard. When this standard is published, the versions shown are valid. All standards will be revised. The parties using this standard should consider the possibility of the following standard revisions: J/9162.1-19 General process rules for machining
3 Clamping of workpieces
3. When installing workpieces on the workbench of the horizontal chiseling machine, the workpiece should be installed as close to the spindle box as possible. 3.2 When installing parts with different properties, auxiliary support should be added and the tightening force should be appropriate to prevent the workpiece from being deformed. 3.3 When adding the workpiece to the pin, consider the workpiece position to ensure the performance of the machining surface and to minimize the extension of the machine tool.
4 Clamping of tools
When clamping the tool and adjusting the tool, the tightening screws should be replaced when the tool holder and the tool shaft are tightened. When installing the tool disc, it must be adjusted in advance.
5 Machining
5.1 Before adjusting the hole, the rotary table and the headstock box should be locked. 5.2 In the process of casting (expansion), the mold end should be chamfered before the rough hole of the effect part: 3.3 When the hole needs to be cleaned (except for the structure), the precision lock hole should be used before cutting. 5.4 When cutting holes or hole groups with position tolerance requirements, the standard hole should be used first, and then the remaining holes should be processed in sequence with it as the standard. 5.5 When cutting deep holes or chiseling shaft holes with a large distance, the overhang length of the chain cutter bar should not be too long, and the auxiliary support should be added appropriately. 5.6 When turning the foreman around during the workpiece, an auxiliary positioning surface should be made on the workpiece before the workpiece is cut, so that the head can be pulled straight.
5. When cutting the sensitive hole, the disc should be mirrored. 5.8 The chain hole corresponds to the optical type. If the disc is qualified, it can continue to be processed. 5.9 When using the machine tool, pay attention to the cleanliness of the machine tool before use. When using the machine tool under high pressure, pay attention to the smooth movement of the knife and the hole of the car, and the lubrication of the knife bar. 5. When the machine tool is used, the machine tool should be stopped and the tool should be cut again. Approved by the State Bureau of Machinery Industry on November 16, 1998, and implemented on December 1, 1999. 5.11 When processing on a precision coordinate machine tool, the room temperature and the temperature of the machine tool-workpiece system should be strictly controlled.
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