# E2S4000

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- source:AYOR CNC Machining

5mm, work deformation force makes an appointment with 15000kN left and right sides. In the test, besides checking ground vibration, return actual measurement the vibration on workbench, altogether measured 22 to nod, if the graph is shown 1 times,measure bit of layout. Analyse to facilitate, quite, check to go up with the foundation every time secure a dot to serve as reference point. Graph amplitude of displacement of 3 grounds vibration pursues along with the degradation curve of the distance 4 reference point set upright Xiang Zhen to use rate (below) and measure a place the perpendicular Xiang Zhen of 2 moves displacement (go up) 5 reference point set upright graph Xiang Zhen uses rate (below) with measure a place, ground vertical stroke has 3 groups of wave crest to oscillatory curve, make clear start, the workpiece that fold a turn and school are entire all cause ground vibration, and the ground when starting sets upright Xiang Zhen to move the biggest, the ground vibration that causes when the workpiece that fold a turn and school are entire is roughly identical, when losing curved work sometimes bigger, sometimes when school is entire bigger. The vibration on the base that measures and ground vibration have equation of time, accordingly, calculable the transmission speed of a wave. Graph 3 for vertical stroke to reach a level to ground vibration degradation curve; Graph 4 with the graph 5 it is reference point respectively, measure bit of perpendicular Xiang Zhen of 2 to use displacement curve and spectrum; Graph 6 it is workbench of the reference point, 20(that measure a place on) perpendicular Xiang Zhen moves speed-distance curve; Graph 7 it is workbench of the reference point, 20(that measure a place on) horizontal Xiang Zhen moves speed-distance curve; Graph 8 with the graph 9 it is reference point respectively, measure bit of level Xiang Zhen of 2 to use displacement curve and spectrum; Express 1 for data of partial actual measurement. Express reference point of 1 the date that measure a place 123456789 be apart from Zhen Yuanzhong heart to be apart from (M)89.

412.

117.

723.

529.

435.

45811 vertical stroke to amplitude (μ M)34.

832.

015.

49.

67.

97.

16.

331.

335.

222.

5 amplitude are compared (Ar/A0) actual measurement is worth - 0.

930.

450.

280.

230.

210.

180.

911.

020.

65 computation are worth - 0.

720.

610.

470.

390.

330.

291.

10.

80.

65 frequency (Hz)-10.

010.

010.

010.

010.

010.

010.

010.

010.

0 levels are compared to amplitude (Ar/A0) actual measurement is worth - 1.

00.

540.

540.

090.

170.

1410.

920.

7 computation are worth - 0.

730.

630.

50.

420.

370.

331.

10.

810.

66Ar frequency (Hz)-111111111 measures bit of number 10111213141516171819 be apart from Zhen Yuanzhong heart to be apart from (M)141720232629329.

49.

49.

4 vertical stroke to amplitude (μ M)29.

415.

411.

610.

710.

69.

89.

129.

428.

829.

1 amplitude is compared (Ar/A0) actual measurement is worth 0.

850.

450.

340.

310.

310.

280.

26--- computation is worth 0.

550.

490.

440.

40.

360.

340.

31--- frequency (Hz)10.

010.

010.

010.

010.

010.

010.

0--- level is compared to amplitude (Ar/A0) actual measurement is worth 0.

630.

520.

370.

270.

160.

130.

11--- computation is worth 0.

570.

510.

460.

430.

40.

370.

35---Ar frequency (Hz)1111111111 notes: (1)A0 is the amplitude of the reference point on the foundation, reach by actual measurement. Set upright Xiang Zhen to move: Amplitude A0 ＝ 34.

8(μ M) , horizontal Xiang Zhen moves: The edge is Oriental to amplitude A0 ＝ 498, ＝ of A0 of amplitude of the direction austral the edge 275.

07. (2) watch wins the bid " computation is worth " data is by document [1] computation gets medium attenuation formula, the others is actual measurement value. Graph 7 reference point set upright Xiang Zhen to use rate (below) go up with dot 20(workbench) level to oscillatory speed (go up) graph 8 reference point set upright Xiang Zhen to use rate (below) with survey bit of 2 office level to oscillatory displacement, the R0 in type is 5.

7m, ξ 0 press [1] in appendix E.

0.

2 regulations are taken for 0.

27, α 0 press [1] in appendix E.

0.

3 regulations are taken for 4 × 10-4, f0 is pressed [1] Chinese style (9.

3.

3-2) computation, perpendicular to for 11.

86Hz, level to take for 1Hz, if computational result is expressed 1 with the graph 3 are shown. Can see from inside actual measurement data and the contrast of its and enumerated data: (1) is expressed 1, graph 4 with the graph 5 make clear, the workbench when this compressor works and foundation vibration curve all have 3 apparent oscillatory peaks, they part corresponding Yu Qi is moved, the workpiece that fold a turn and school do work 3 phase. The ground stands to basically be caused by the phase that start to oscillatory the biggest amplitude, its vibration frequency is 10.

0Hz left and right sides. Graph 9 reference point set upright Xiang Zhen to use rate (below) and survey bit of 2 office level to oscillatory displacement (on) spectrum (2) is in phase of the workpiece that fold a turn, workbench has one very big perpendicular Xiang Zhen moves displacement (on graph 6() ) , make workbench generation is down displacement, show pillar produced bigger flexibility to be out of shape. (3) from the watch 1, graph 7 with the graph 8 can see, ground level basically is caused by phase of the workpiece that fold a turn to oscillatory the biggest amplitude, its vibration frequency is 1Hz(graph 9) . (4) from the watch 1 with the graph 3 can see, the edge is Oriental to, perpendicular to after 12m is more than in distance R to ground vibration with the level, actual measurement value is compared by 96 " move compasses " the value that attenuation formula computation gets is little, because the edge is Oriental,this may be to in the distance R is more than 12m the following ground piled up workpiece, make its vibration reduces be caused by. And the direction austral the edge, the ground sets upright Xiang Zhen to use attenuation actual measurement with by 96 " move compasses " what attenuation formula computation reachs is more consistent, because ground of the direction austral the edge is free surface,this is, consequently perpendicular Xiang Zhen is moved actual measurement and by 96 " move compasses " be identical of attenuation formula calculative is better. (5) from the watch 1 with the graph 3 still can see, curve of vibration of actual measurement ground is inside certain distance limits, ground vibration displacement is basic and identical (if pursue 3 in edge east comes for 12m to the distance 18m limits) . The stiffness that this may be the workpiece that piles up as a result of the ground is bigger than the stiffness of foundation earth much, can regard rigid body, the workpiece that piles up namely is equivalent to rigid body motion, foundation and the workpiece that pile up contact those who manage the area to be out of shape must coordinate consistent, the vertical stroke of the foundation earth that makes pile up workpiece falls consequently to be out of shape the value is basic and same. Additional, what put work as a result of caboodle is inhomogenous, cause ground vibration wave motion to rise and fall bigger. 3, conclusion (ground vibration is aroused to basically set upright Xiang Zhen to move for the ground when 1) shuts compressor of machinery of type double dot to work, ground level Xiang Zhen moves displacement amplitude lesser, can not grant to consider. (2) shuts the ground vibration that compressor of machinery of type double dot causes to increase rapid attenuation as the space that leaves Zhen Yuan, and the actual measurement value that the ground that causes sets upright Xiang Zhen to move displacement and by 96 " move compasses " in agree basically what attenuation formula computation gets, can press 96 " move compasses " in attenuation formula estimation. (3) mechanical compressor is before punch workpiece end, workbench all has one bigger be down displacement, this displacement makes pillar flexibility stretchy, after punch ends, suffer the pillar flexibility systole with stretchy force to arouse foundation and foundation vibration. (4) adds force action to fall in the ground (the) after if the ground piles up clog or installation are set,having, displacement reduces the ground vibration that Zhen Yuan causes, ground vibration frequency also will be reduced. CNC Milling