Machinery's Handbook, 31st Edition
V-Block Types 735 Type 1, Style 2.— Type 1 V-blocks are of the single V type. The Style 2 V-block shall have two clamping grooves on each side to accommodate clamping from minimum to the full range of the capacity of the V-groove. The block shall be similar to Fig. 2 and conform to the dimensions shown in Table 1. Style 2 V-blocks can be furnished in matched pairs and the clamps shall be suitable for use with either V-block.
Fig. 2. Type 1, Style 2 Table 1. Accuracy and Dimensions, Type 1, Style 2
Permitted Deviations (inch)
Grade and Designating Size
Flatness of Working Faces
Matching Tolerance over “V” Length 0.0002 0.0002
End/Side Square to Base
Parallelism of Opposite Faces
Parallelism of “V” to Base and Sides
“V” Centrality 0.0003 0.0003
1 0.00015 0.0002 2 0.0001 0.0002 1 0.0004 0.002 2 0.0004 0.002
0.0002 0.0002 0.001 0.001
0.0003 0.0003 0.002 0.002
Grade A Grade B
0.002 0.002
0.001 0.001
Nominal Dimensions (inch)
Grades A & B Designating Size
Maximum Capacity
Length Width
Height 2.500 2.000
1 2
3.000 2.500
2.500 3.000
2.500 2.000
All dimensions are in inches. Type 1, Style 3.— Style 3, reversible clamping yoke. Style 3 blocks shall be similar to Fig. 3, conform to dimensions and accuracies shown in Table 2 for the sizes specified and be designed to facilitate clamping to a machine table or plate. The top surface shall have 4 drilled and tapped holes, one near each corner, to accommodate the yoke screws. If the blocks are furnished in matched pairs the yokes and screws shall be suitable for use with either block of the matched pair.
Fig. 3. Type 1, Style 3 Machinists’Table Block with Yoke
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online