Great Magtech (Xiamen) Electric Co., Ltd is one of the most reliable manufacturers and suppliers of high precision electro permanent magnetic chuck for sale in China. We warmly welcome you to wholesale high quality high precision electro permanent magnetic chuck for sale from our factory. Good service and reasonable price are available.
High Precision Electro Permanent Magnetic Chuck For Sale
Our high-precision electro-permanent magnetic chuck is for sale at a bargain price, it is ideally suited for clamping small and big work pieces for milling operations. Pole extensions, easily fixed on the surface of the magnetic chucks, guaranteed clamping without distortion even for uneven work pieces. The full steel body offers ideal protection against external influences like hot chips and coolant. If you work huge pieces, you will get optionally a 4-channel controller, simultaneously switching max. 4 magnetic chucks.
Specification High Precision Electro Permanent Magnetic Chuck For Sale
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Item No. |
W |
L |
H |
Poles |
|
GME-EMC01 |
240 |
430 |
93 |
18 |
|
GME-EMC02 |
300 |
430 |
93 |
24 |
|
GME-EMC03 |
420 |
590 |
93 |
48 |
|
GME-EMC04 |
480 |
750 |
93 |
60 |
|
GME-EMC05 |
600 |
990 |
93 |
126 |
|
GME-EMC06 |
250 |
425 |
93 |
8 |
|
GME-EMC07 |
327 |
601 |
93 |
18 |
|
GME-EMC08 |
415 |
815 |
93 |
32 |
|
GME-EMC09 |
503 |
1029 |
93 |
50 |
|
GME-EMC10 |
591 |
601 |
93 |
36 |
Feature of Electro Permanent Magnetic Chuck
• A magnetic bed also comes with T-Slots.
• The working surface of the electro-permanent magnetic chuck is machined from a single block of mild steel, wherein the poles are demarcated by making slots in the top surface obviating the need to use filler material.
• Very rigid and robust construction.
• Universal clamping directly on Magnetic bed for both ferrous and nonferrous components.
•Maximum accuracy due to homogeneous surface.
•Once clamped on the precision machine table -assures 100% safety to the original machine bed.
•Pole size 50 x 50 mm
• Adhesive force ≥ 350 kg per pole
•Penetration depth of the magnetic field at a maximum adhesive force level of up to 12 mm
•A minimum of 8 pole contacts is necessary for optimum clamping
•Controller for the magnets above
Application of Electro Permanent Magnetic Chuck
• This kind of electro-permanent magnetic chuck could be clamped to small or big workpieces by milling processes
• Clamping without vibration and distortion
• Manufacturing and process accuracy with plane parallelism of 0.02 mm and more
How To Choose A Magnetic Chuck?
1. Contact Area
The ideal condition is a minimum air gap, which offers the highest resistance to machining force and a larger contact area. The poorest results are obtained where large air gaps and limited (line) contact.
2. Surface Finish
A lapped finish that has no air gaps presents the best magnetic workholding condition, and a coarse surface with many air gaps is the worst.
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c |
Ground finish |
Rough finish |
Rough planned |
As Cast |
|
100% |
85% |
65% |
45% |
25% |
3. Workpiece Materials
Maximum induction of flux is done in Pure Iron and minimum in Stainless Steel for practical purposes.
|
Cobalt Iron |
Best possible grip is 26 kg/cm2 |
|
Mild Steel (C-<0.25%) |
Best practical grip 17 kg/cm2 |
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Carbon Steel (0.9%) |
Best possible grip is 12 kg/cm2 |
|
Cast Iron |
Best possible grip is 8 kg/cm2 |
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Nickel (SS 410/420) |
The best possible grip is 2 kg/cm2 |
4. Condition of Material
Heat Treatment of materials affects its physical structure and its ability to absorb Magnetic Flux. Annealed materials absorb Maximum induction of flux and do not retain any residual magnetism.
Hardened materials do not absorb as much Magnetic Flux but tend to retain after the Chuck is switched Off.
5. Workpiece Thickness
The Magnetic Flux path within a workpiece is a semi-circle path from the center of one Chuck Pole to the Center of the next Pole.
So if the workpiece is thinner than its radius path, it cannot absorb all the flux and some passes out in Air. Thus the resultant pull is lower than that when all the flux is absorbed by a Thick job.
Note: Different types of magnetic chucks For work-holding
1. Permanent Magnetic Chuck
2. Electro Magnetic Chuck
3. Electro Permanent Magnetic Chuck
From the above, it is found that the main consideration for choosing the correct type of Magnetic Chuck is determined by the above 5 factors.
Further type of Grinding Machine and the directional force of the Wheel is also to be considered. (direction on which the grinding or cutting force is applied).
Generally, the maximum grip is generated where force is applied at a right angle to the pole direction. The downward force is 4-5 times the magnitude of the sliding force so the greater the downward grip the less likely is the job to slide.
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