The gauge block handbook Episode 2 pdf

... only the 30 to 60 mm of the block near the surfaces. For blocks under 100 mm this is the entire block, and there is no problem. For longer blocks, there is a variable amount of the block in the ... If there is a burr on the block or platen, if there is particle of dust between the block and platen, or if the block is seriously warped, the entire face of the...

Ngày tải lên: 12/08/2014, 08:21

... the restraint (S – L) the matrix equation to solve is: L YX a aXX A t t t •= −1 0 (A.8) | a t | = [ 1 0 0 0 ] (A.9) 000001 0 120 000 00 622 2 0 026 22 0 022 62 1 022 26 0 −−− −−− −−− −−− == t t ij a aXX C ... often in the first part of the scheme. This allows block A to have a different thermal handling than the other blocks which can result in a thermal drift...

Ngày tải lên: 12/08/2014, 08:21

... +24 , - 12 5 7 +14, -7 +28 , -14 6 8 +16, -8 + 32, -16 7 9 +18, -9 +36, -18 8 10 +20 , -10 +40, -20 10 12 +24 , - 12 +48, -24 12 14 +28 , -14 +56, -28 16 18 +36, -18 + 72, -36 20 20 +40, -20 +80, ... fixed gauge, and the required accuracy of the gauge is 0.5 µm. If the size of the gauge requires a stack of five blocks to make up the nominal size of the ga...

Ngày tải lên: 12/08/2014, 08:21

... to 2. 29 mm 5 5 19 2. 30 mm to 2. 49 mm 5 5 20 2. 50 mm to 10 mm 5 5 21 10.5 mm to 20 mm 5 7 22 20 .5 mm to 50 mm 6 8 23 60 mm to 100 mm 8 18 24 125 mm 9 19 150 mm 11 38 175 mm 10 22 20 0 ... laboratory has a gauge block measured at NIST every year for nine years, it is good practice for the lab to use the mean of the nine measurements as the length of the...

Ngày tải lên: 12/08/2014, 08:21

... . 62 16 C ** Y 62. 06 62. 19 72. 46 72. 60 14 .22 17 S ** Y 53.57 62. 87 66.96 73 .27 -6. 32 33 18 X ** C 62. 76 62. 21 76.15 72. 62 3.53 27 19 X ** S 62. 86 53.77 76 .25 67.16 9.09 34 20 Y ** X 62. 49 ... 1.50 mm to 2. 09 mm 5 5 18 2. 10 mm to 2. 29 mm 5 5 19 2. 30 mm to 2. 49 mm 5 5 20 2. 50 mm to 10 mm 5 5 21 10.5 mm to 20 mm 5 7 22 20 .5 mm to 50 mm 6 8 23 60 mm to...

Ngày tải lên: 12/08/2014, 08:21

... wavelength to the block length the accuracy of the wavelength is of primary importance. The gauge block temperature is measured so that the block length at 20 ºC, the standard 1 02 during periods ... Square style blocks, such as the NIST long blocks, are positioned so that the gauge point is at the right in the viewing field of the interferometer. One to...

Ngày tải lên: 12/08/2014, 08:21

... B - E y 12 = C - B y 12 = C - S 127 0 024 2 424 24 020 000 24 06330 24 03630 24 03360 24 00000 24 1 1       = − ij C (A.11) Using S as the restraint, the solution to the equations ... y 20 = E - A y 20 = G - D y 21 = J - C y 22 = E - I 129 value, of the control. The process control step involves the comparison of the...

Ngày tải lên: 12/08/2014, 08:21

... total deformation is 0.00 022 mm or 0 .22 µm. 143 If we were to use a steel master block to calibrate a chrome carbide block under the above conditions we see that the penetration correction ... chrome carbide block V 2 = 43 x 10 -8 diamond sphere α = 2. 231 * (1/3) 2/ 3 * (86 x 10 -8 + 43 x 10 -8 ) 2/ 3 * (6) -1/3 (D.5) = 0.000070 mm = 0.070 µm T...

Ngày tải lên: 12/08/2014, 08:21

... -2 +8, -4 2 2 4 +8, -4 +16, -8 3 3 5 +10, -5 +20 , -10 4 4 6 + 12, -6 +24 , - 12 5 7 +14, -7 +28 , -14 6 8 +16, -8 + 32, -16 7 9 +18, -9 +36, -18 8 10 +20 , -10 +40, -20 10 12 +24 , - 12 ... end of the block to an auxiliary true plane wrung to the other end of the block, as shown in figure 2. 1 (from B89.1.9). Figure 2. 1. The length of a gauge bloc...

Ngày tải lên: 20/06/2014, 18:20

... to 2. 09 mm 5 5 18 2. 10 mm to 2. 29 mm 5 5 19 2. 30 mm to 2. 49 mm 5 5 20 2. 50 mm to 10 mm 5 5 21 10.5 mm to 20 mm 5 7 22 20 .5 mm to 50 mm 6 8 23 60 mm to 100 mm 8 18 24 125 mm 9 19 150 mm ... +36, -18 8 10 +20 , -10 +40, -20 10 12 +24 , - 12 +48, -24 12 14 +28 , -14 +56, -28 16 18 +36, -18 + 72, -36 20 20 +40, -20 +80, -40 Table 2. 1b Tolerance Grades fo...

Ngày tải lên: 27/06/2014, 18:20