Horizontal Slip Table

 

The axis of a shaker’s operation is Z axis. In order to achieve vibrations in X and Y axis, a Horizontal Slip Table (HST) is used. A Horizontal Slip Table is compactly constructed using a precisely machined magnesium alloy tool-plate, which rests on top of the flat granite block. Hydraulic bearings are placed at different locations based on the design of the HST to constrain its motion in the same axis as that of the shaker. A consistent oil film is generated on the granite block and in the bearing in order to remove friction, provide dynamic support, control crosstalk and restrain overturning moments. The hydraulic bearings can be low or high pressure type depending on the table specification. High pressure bearings have a lower clearance and require higher pressure to operate as compared to low pressure bearings. Driven by our bull nose design based drive bar, the Horizontal Slip Tables provide excellent performance for heavy, tall or eccentric loads. The test object can be 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 axis, 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 ideal 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 for operating on Armature or horizontally for operating on Horizontal Slip Table. 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 to ensure maximum transfer of power and interface with the bed uses bolts placed in the same axis as vibration to maintain that transfer of power. 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. Any misalignment can damage the armature, we therefore have to manufacture every part of these systems on CNC machines with very little tolerance. It is for this very reason that the Horizontal Slip Tables made by Sdyn are capable of working at frequencies well above 2 kHz with excellent linearity and low transverse motion.

Air Cooled Armature

Combo Base

As the usage of shaker and HST is dependent on the test parameters, it is required to use the shaker with and without the HST. Therefore, both shaker and HST are bolted on a single platform which ensures that every time you turn the shaker and couple it with our HST, alignment will be perfect.

Air Cooled Armature

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
120
180
50
50
1200
1500
4
5
5.5
5.5
SEW 590 1200x1200x50
1500x1500x50
100×100
100×100
5-2000
5-2000
180
280
60
60
1500
2000
5
5
5.5
5.5
SEW 760 1200x1200x50
1500x1500x50
100×100
100×100
5-2000
5-2000
180
280
80
80
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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