GB/T 3668.7-1983 Dimensions of intermediate bases and columns for common components of modular machine tools

GB/T 3668.7-1983 Dimensions of intermediate bases and columns for common components of modular machine tools GB/T3668.7-1983 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Common components for modular machine toolsbzxZ.net
Dimensions of intermediate bases and columns
Madular anits for machlne tool coastractlorCentre bases and columns--DlmenslonsThis standard is equivalent to ISO 2891-1977 "Common components for modular machine tools-1 Scope
UDC 621.9-21
GE 3668.7--88
+ISO 2891-1971
Intermediate bases and columns".
This standard specifies the relevant interchangeability dimensions of intermediate bases and columns for modular machine tools. 2 Dimensions
2.1 The dimensions of the intermediate base shall comply with the provisions of Figure 1 and Table 1. 2.2 The dimensions of the columns shall comply with the provisions of Figure 2 and Table 2. 2.3 When the length of the slide saddle of the slide is reduced by one level according to the R10 priority system, the height Ha of the slide installation surface on the column should also be reduced accordingly. Note: The provisions of Article 2.3 are increased when equivalent adoption is adopted. 3 Positioning of the intermediate base
It is stipulated that the end face key and groove positioning can be used, and double pin positioning can also be used. Issued by the National Bureau of Standards on May 9, 1983
Implementation on March 1, 1984
Intermediate base
30 years*
L>1250
GB 3668.7--83
Figure 1 Intermediate base
Table 1 Dimensions of intermediate base
Filling depth
630 or 710
(optional)
5 Column
GB 3668.7—83
Slide mounting surface
Note: The slide mounting surface height 450 and Hmn in Figure 2 Column
are added when equivalent adoption is adopted.
Table 2 Column Dimensions
Mounting Surface Height
Nominal Size
Surface Bolt Hole
Center Surface
Mounting Surface Width
Other Structures
Slide Mounting Surface
Bolt Size
*Side Bolt Hole Spacing Should Be Distributed According to 25mm or Integer Multiples of 25mm (Determined by the Manufacturer). The Tolerance of the First and Last Hole Spacing Is ±0.2mm*, and the Front Bolt Holes Should Be Distributed According to 25mm or Integer Multiples of 25mm from the Center Line (Determined by the Manufacturer). GB 3668.1-83
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is drafted and managed by the Dalian Combined Machine Tool Research Institute of the Ministry of Machinery Industry! The main drafter of this standard is Cao Weilai.
From the date of implementation of this standard, the former Ministry of Machinery Industry standards 1B1526-75 "Nominal dimensions and interchangeable dimensions of columns of common components of modular machine tools" and JB1529-75 "Interchangeable dimensions of intermediate bases of common components of modular machine tools" shall be invalid.
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