Horizontal Slip Table

 

A Shaker, in horizontal orientation, does not offer any area to mount objects as the Armature’s head is perpendicular to Earth. Therefore, in order to achieve vibrations in the X and Y axis, a Horizontal Slip Table (HST) is used which offers a bed parallel to Earth. This bed connects to the Armature with a coupling when the shaker is in horizontal orientation. The HST bed and its coupling to the Armature are manufactured by welding magnesium alloy tool plates. Coupling is designed to operate in tension and compression mode to yield highest transmissibility. Low or high pressure hydrostatic bearings are placed at different locations based on the design of HST to constrain its motion in the same axis as the Shaker. A granite block is placed beneath the HST bed and a consistent oil film is generated on this block and in the bearing to remove friction and provide dynamic support. As the motion of this bed is constrained to one direction, the object is rotated by 90° on the table to switch between X and Y axis. A system integrated with HST is capable of testing objects in all three axes, one at a time.

Major Sub Systems of the Horizontal Slip Table are:

Trunnion Assembly

An optimised gear based pivoting system to turn the shaker from its vertical position to a horizontal position using mechanical or electrical means. Locking bolts are provided on either sides to lock the trunnion assembly at the point where the shaker is precisely aligned vertically and horizontally. A mercury switch is used to detect the orientation of the shaker by the Power Amplifier to enable or disable relevant interlocks automatically.

Shaker to HST Coupling

Our bull nose design based adaptors for attaching the shaker’s armature to the HST’s bed are manufactured by welding high quality magnesium alloy tool-plates. Interface with the armature uses every insert of the armature and interface with the bed uses bolts placed at a slight angle from the axis of vibration to provide maximum transmissibility and ease in operation. The final outcome is that the centre of the armature, centre of the adaptor and the centre of the bed fall in the same axis.

Combo Base

As most of the testing is done in all three axis, changing orientation from vertical to horizontal and vice versa happens very frequently. Therefore, both Shaker and HST are bolted on a single platform with very tight tolerances to ensure proper alignment every time you turn the shaker.

Technical Specifications

Horizontal Slip Table
Shaker Model Table Size (LxBxH) (mm) Hole Pattern (mm) Frequency Range (Hz) Table Mass (kg) Drive Bar Mass (kg) Payload Capacity (kg) No. of Bearings Bearing Mass (kg)
Low Pressure Series
SEV 125 N/A N/A N/A N/A N/A N/A N/A N/A
SEV 140 400x400x37 50×50 5-2000 12 2.1 200 2 0.500
SEV 180 400x400x37
600x600x37
50×50
100×100
5-2000
5-2000
12
24.5
3.5
3.5
200
350
2
2
0.500
0.630
SEV 240 400x400x37
600x600x37
800x800x50
50×50
100×100
100×100
5-2000
5-2000
5-2000
12
25.5
65
6
6
6
200
350
500
2
2
4
0.500
0.630
0.630
SEV 300 600x600x37
800x800x50
1000x1000x50
100×100
100×100
100×100
5-2000
5-2000
5-2000
29
65
97
12
12
12
350
500
800
2
4
4
0.630
0.630
0.630
SEV 360 600x600x37
800x800x50
1000x1000x50
100×100
100×100
100×100
5-2000
5-2000
5-2000
29
65
97
12
12
12
350
500
800
2
4
4
0.630
0.630
0.630
SEV 440 800x800x50
1000x1000x50
1200x1200x50
100×100
100×100
100×100
5-2000
5-2000
5-2000
65
97
135
20
20
20
500
800
1000
4
4
4
0.630
0.630
0.630
High Pressure Series
SEW 500 1000x1000x50
1200x1200x50
100×100
100×100
5-2000
5-2000
110
165
35
35
1200
1500
4
5
5.5
5.5
SEW 590 1200x1200x50
1500x1500x50
100×100
100×100
5-2000
5-2000
165
230
40
40
1500
2000
5
5
5.5
5.5
SEW 760 1200x1200x50
1500x1500x50
100×100
100×100
5-2000
5-2000
165
230
48
48
1500
2000
5
5
5.5
5.5
Notes:
  1. Customised specifications are also tailored on request
  2. Please contact Sdyn for advice on the optimum specifications to meet your testing requirements
  3. Specifications are correct at the time of publication and are subject to improvement or amendment without prior notice

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