3 ungual chuck weigh 3 claw again from centering chuck, it installs the centre of turning circle of the circumferential and certain work that places a share according to workpiece, but its centering precision is not very tall. Common ground uses an occasion, reach in fine vehicle, grinding use precision of milling of all-purpose dividing head below the circumstance such as taller spare parts, choose the 3 ungual chuck with the taller precision that hold clip, and mix in thick car aeriform in the treatment such as the grinding of a precision requirement, milling, use outfit places the 3 ungual chuck with inferior precision. Graph outfit of 3 ungual chuck places sketch map of clip of 1 outfit trying a club the principle of workpiece is, use chuck wrench rotational and circumferential the anyone in the 3 umbrellas tine that go up. Drive planar whorl to turn thereby and drive 3 card claw to move simultaneously, rise to install; of clip workpiece action to look from rigid structure from centering, the 3 umbrellas tine of chuck has same function, but the course detects carefully, the precision of workpiece of clip of outfit of 3 umbrellas tine is different, differ bigger also. Part 3 umbrellas tine in detect the A on mark, b, c; detects use try club and detect the method is shown 1 times like the graph, the amount is 10, good by ordinal platoon, undertake detecting by different lathe, result rank is expressed 1, express 2 with the watch 3. Express 1 CA6140 machine tool (chuck is 250mm, newer) circumferential and jumpy value (Mm) tries A 0 of date of tine of umbrella of good number 1 2 3 4 5 6 7 8 9 10.
09 0.
10 0.
04 0.
08 0.
05 0.
10 0.
09 0.
06 0.
08 0.
08 B 0.
43 0.
29 0.
34 0.
43 0.
35 0.
33 0.
48 0.
39 0.
33 0.
36 C 0.
12 0.
45 0.
31 0.
24 0.
31 0.
36 0.
15 0.
48 0.
40 0.
Chuck of 〔 of machine tool of 44 watches 2 C616 is 160mm, half new) circumferential and jumpy value (Mm) tries A 0 of date of tine of umbrella of good number 1 2 3 4 5 6 7 8 9 10.
29 0.
36 031 0.
26 0.
25 0.
31 0.
27 0.
25 0.
27 0.
28 B 0.
28 0.
26 0.
24 0.
34 0.
29 0.
40 0.
12 0.
28 0.
12 0.
11 C 0.
09 0.
12 0.
10 0.
07 0.
12 0.
13 0.
08 0.
10 0.
07 0.
Machine tool of 11 watches 3 C616 (chuck is 160mm, older) circumferential and jumpy value (Mm) tries A 0 of date of tine of umbrella of good number 1 2 3 4 5 6 7 8 9 10.
45 0.
42 0.
43 0.
46 0.
38 0.
44 0.
39 0.
44 0.
41 0.
40 B 0.
26 0.
28 0.
23 0.
22 0.
21 0.
20 0.
28 0.
26 0.
26 0.
29 C 0.
61 0.
58 0.
59 0.
62 0.
60 0.
62 0.
53 0.
64 0.
59 0.
58 from above the circumferential and jumpy value that measures in 3 watches and detect the circumstance can reach, no matter be centering precision the chuck with centering tall or low precision, the precision of workpiece of clip of outfit of 3 umbrellas tine is different, and the precision that among them an umbrella tine holds clip work is stabilized already tall. Ask in precision taller machining is medium, if we use this one characteristic, can make workpiece machines quality to get assuring further. CNC Milling