V-Block Calibration
| | | CP-24 V-BLOCK
Go to CALIBRATION PROCEDURE HOME or INDEX for links to other procedures.V-BLOCKS V-Blocks are often used to check true position gages and runout in the lab. They are also used for work holding and inspection on the shop floor. In some shop work holding applications, the accuracy would not need to be to the level of lab or inspection gage blocks. V-blocks are precisely square, and the V-groove should be in the exact center of the block. The prime purpose of a V-block is to hold cylindrical pieces or to precisely establish the center line of a cylindrical piece. A V-block can also be used to check for runout of one cylindrical segment relative to another. V-blocks come in a variety of materials, styles and sizes. Materials include tool steel, cast iron and granite. Some examples of various styles and sizes are as follows: Starrett No. 268 Series V-BlocksStarrett No. 271 Series V-BlocksStarrett No. 278 Series V-BlocksStarrett No. 567 V-BlockStarrett No. 568 V-BlockStarrett No. 578 V-BlockStarrett No. 566 Magnetic V-BlockStarrett Tru-Stone Granite V-BlocksTaft-Pierce Model 9128Taft-Pierce Model 9129Taft-Pierce Model 9130Taft-Pierce Model 9131Taft-Pierce Model 9132Taft-Pierce Model 9133Taft-Pierce Model 9134 The accuracy in the procedure is specified by Federal Specification A-A-51150. It states that the V-groove should be square and parallel to all surfaces within .0003 inch. All other surfaces should be square within .0002 inch. For further information reference the following: A-A-51150 Federal Standard for Sine V-BlocksInspection and Gaging by Kennedy, Hoffman & Bond published by Industrial Press CALIBRATION PROCEDURE – HCJ MACHINE COMPANY | PROCEDURE NO.CP-24 | SUBJECT: V-BLOCKS | PROCEDURE | 1.0 REFERENCE DOCUMENTS 1.1
Go to CALIBRATION PROCEDURE HOME or INDEX for links to other procedures.V-BLOCKS V-Blocks are often used to check true position gages and runout in the lab. They are also used for work holding and inspection on the shop floor. In some shop work holding applications, the accuracy would not need to be to the level of lab or inspection gage blocks. V-blocks are precisely square, and the V-groove should be in the exact center of the block. The prime purpose of a V-block is to hold cylindrical pieces or to precisely establish the center line of a cylindrical piece. A V-block can also be used to check for runout of one cylindrical segment relative to another. V-blocks come in a variety of materials, styles and sizes. Materials include tool steel, cast iron and granite. Some examples of various styles and sizes are as follows: Starrett No. 268 Series V-BlocksStarrett No. 271 Series V-BlocksStarrett No. 278 Series V-BlocksStarrett No. 567 V-BlockStarrett No. 568 V-BlockStarrett No. 578 V-BlockStarrett No. 566 Magnetic V-BlockStarrett Tru-Stone Granite V-BlocksTaft-Pierce Model 9128Taft-Pierce Model 9129Taft-Pierce Model 9130Taft-Pierce Model 9131Taft-Pierce Model 9132Taft-Pierce Model 9133Taft-Pierce Model 9134 The accuracy in the procedure is specified by Federal Specification A-A-51150. It states that the V-groove should be square and parallel to all surfaces within .0003 inch. All other surfaces should be square within .0002 inch. For further information reference the following: A-A-51150 Federal Standard for Sine V-BlocksInspection and Gaging by Kennedy, Hoffman & Bond published by Industrial Press CALIBRATION PROCEDURE – HCJ MACHINE COMPANY | PROCEDURE NO.CP-24 | SUBJECT: V-BLOCKS | PROCEDURE | 1.0 REFERENCE DOCUMENTS 1.1