Electro Permanent Magnetic Chuck

Product Details
Customization: Available
Type: Surface Grinding Machine
Processing Object: Milling Machine
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  • Electro Permanent Magnetic Chuck
  • Electro Permanent Magnetic Chuck
  • Electro Permanent Magnetic Chuck
  • Electro Permanent Magnetic Chuck
  • Electro Permanent Magnetic Chuck
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Basic Info.

Model NO.
F240x430x93mm
Abrasives
Grinding Wheel
Controlling Mode
Artificial
Automatic Grade
Manual
Cylindrical Grinder Type
End Cylindrical Grinder
Precision
High Precision
Certification
CE, RoHS
Condition
New
Size of Magnetic Chucks
F240X430X93mm
Package of Magnetic Chucks
Carton, Wood Case
Application of Magnetic Chucks
Industrial Application
Pull Force
Clamping Force 140 Kg/Pole.
Transportation
by Sea, by Express, by Air
Certificate
Ce, RoHS, SGS
Lead Time
7-25 Days
Surface Treatment
100% Leak Proof
Advantage
Reduces The Setup Time and Machining of Workpieces
Panel
Mild Steel Q235
Transport Package
Carton, Wood Case
Specification
Customized
Trademark
GME magnetic chucks
Origin
Xiamen
HS Code
8505901000
Production Capacity
100000 Sets

Product Description

High Precision Electro Permanent Magnetic Chuck
Our high precision electro permanent magnetic chuck for sale at a bargain price, it is ideally suited for clamping of small and big work pieces for milling operations. Pole extensions, easily fixed on the surface of the magnetic chucks, guaranteed a clamping without distortion even for uneven work pieces. The full steel body, offers an ideal protection against external influences like hot chips and coolant. If you work very big work pieces, you will get optionally a 4 channel controller, making a simultaneous switching of max. 4 magnetic chucks.
                                    
Specification
 Electro Permanent Magnetic Chuck
 
Item No. W
(mm)
L
(mm)
H
(mm)
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
A magnetic bed which comes also with a 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 non ferrous 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 maximum of adhesive force level up to 12 mm
A minimum of 8 poles contact is necessary for optimum clamping
Controller for the magnets above

Electro Permanent Magnetic Chuck
Application
• This kind of electro permanent magnetic chuck could be clamp 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
Electro Permanent Magnetic Chuck

 How to choose a magnetic chuck?

1. Contact Area
The ideal condition is minimum air gap, which offers highest resistance to machining force and larger contact area. The poorest results are obtained where large airgaps and limited (line) contact.
 
2. Surface Finish
A lapped finish which has no air gaps present the best magnetic workholding condition, a coarse surface with many air gaps the worst.

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 purpose.
 

Cobalt Iron 

Best possible grip  26 kg/cm2

Mild Steel (C-<0.25%)

Best practical grip   17 kg/cm2

Carbon Steel (0.9%) 

Best possible grip   12 kg/cm2

Cast Iron

Best possible grip     8 kg/cm2

Nickel (SS 410/420)

Best possible grip     2 kg/cm2


4. Condition of Material
Heat Treatment of materials effects its physical structure and its ability to absorb Magnetic Flux. Annealed materials absorbs 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 work-piece is a semi-circle path from the center of one Chuck Pole to the Center of the next Pole.
So if the work-piece 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 right angle to the pole direction. Downward force is 4-5 times the magnitude of the sliding force so that the greater the downward grip the less likely is the job to slide.

Electro Permanent Magnetic Chuck
Electro Permanent Magnetic Chuck




 

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