CN202079528U - Electric permanent magnetic chuck with micro remanent magnetism - Google Patents
Electric permanent magnetic chuck with micro remanent magnetism Download PDFInfo
- Publication number
- CN202079528U CN202079528U CN2011201509608U CN201120150960U CN202079528U CN 202079528 U CN202079528 U CN 202079528U CN 2011201509608 U CN2011201509608 U CN 2011201509608U CN 201120150960 U CN201120150960 U CN 201120150960U CN 202079528 U CN202079528 U CN 202079528U
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- remanent magnetism
- magnetic
- chuck
- cylinder wall
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Abstract
The utility model relates to an electric permanent magnetic chuck with micro remanent magnetism, which comprises a circular chuck body, an internal cylinder wall and an external cylinder wall are fixedly connected on the chuck body, a permanent magnet with a magnetic exciting coil and magnetic poles are fixedly arranged in a circular groove between the internal cylinder wall and the external cylinder wall, the magnet exciting coil is sheathed outside the permanent magnet; the electric permanent magnetic chuck with micro remanent magnetism is characterized in that the magnetic poles have a trapezoidal structure, and a narrow pole internal magnetic circuit is arranged between the permanent magnet and the magnetic poles. The electric permanent magnetic chuck has the advantages that the internal magnetic circuit is saturated due to narrowness during magnetism exciting, thus not influencing the attraction of a workpiece; through the narrow pole internal magnetic circuit short circuit, the weak remanent magnetism with different polarities after being subjected to demagnetization can lead the remanent magnetism of the workpiece to be greatly reduced, thus further being capable of meeting the requirement on the remanent magnetism less than 7GS. Therefore, the wheels of a train can be clamped and machined in one step, the internal circle and the external circle can be simultaneously machined, and the machining precision and roundness of the wheels can be ensured; furthermore, the clamping of the chuck is fast, convenient, safe and reliable, thus improving the machining efficiency.
Description
Technical field
The utility model belongs to the machining clamping device, particularly relates to a kind of little remanent magnetism electric permanent-magnet suction disc.
Background technology
In recent years along with the developing rapidly of bullet train, it is more and more higher to make that the machining accuracy of high speed train wheel and circularity require, and adopts traditional mechanical clamping because stress is concentrated, and the circularity and the precision that unload rear wheel all do not reach designing requirement.Because high speed train wheel adopts steel alloy, can't reach high-precision requirement because of the thermal deformation of sucker with magnechuck.And the demagnetizing method of common single magnet type electric permanent-magnet suction disc all is to add repeatedly the direct current that polarity decays gradually to demagnetize in degaussion coil, because the inhomogeneities of permanent-magnet material itself and the inhomogeneities of load, the remanent magnetism of the sucker of above-mentioned many magnetic poles each magnetic pole under unified exciting current changes is extremely inconsistent, makes that final sucker remanent magnetism is bigger.Because the remanent magnetism of workpiece self, make to be difficult to unload after the workpiece processing, and residual remanent magnetism on the workpiece, can't reach＜requirement of 7GS.
Summary of the invention
The utility model for solve the technical problem that exists in the known technology provide a kind of simple in structure, can improve steel alloy wheel precision machining precision and the little fast and easily remanent magnetism electric permanent-magnet suction disc of clamping.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: little remanent magnetism electric permanent-magnet suction disc, comprise the annular disk body, affixed inner cylinder wall and outer cylindrical wall on disk body, install the permanent magnet and the magnetic pole that have magnet exciting coil in the annular groove between disk body inner cylinder wall and outer cylindrical wall, the outside suit magnet exciting coil of permanent magnet, it is characterized in that: described magnetic pole is a trapezium structure, and narrow utmost point internal magnetic circuit is installed between described permanent magnet and the magnetic pole.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, promptly in sucker, increase a narrow utmost point internal magnetic circuit, internal magnetic circuit when excitation is because narrow and saturated, can not influence the sticking workpiece, and the narrow utmost point internal magnetic circuit of the residual flux short circuit of small and weak opposed polarity after the demagnetization, make the remanent magnetism of workpiece reduce significantly, and then can satisfy the requirement of residual remanent magnetism＜7GS.So not only can accomplish to settle at one go to the clamping and the processing of train wheel, the realization inside and outside circle is processed simultaneously, guarantees the machining accuracy and the circularity of wheel; And the sucker clamping is efficient and convenient, and safety, reliable improves working (machining) efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1.
Among the figure: 1 disk body; 2, outer cylindrical wall; 3, magnet exciting coil; 4, permanent magnet; 5, narrow utmost point internal magnetic circuit; 6, magnetic pole; 7, epoxy resin; 8, inner cylinder wall; 9, silica gel; 10, terminal box.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 and Fig. 2, little remanent magnetism electric permanent-magnet suction disc, comprise annular disk body 1, excellent inner cylinder wall 8 of welding and outer cylindrical wall 2 on disk body 1, install many group permanent magnets 4 and magnetic pole 6 in the annular groove between disk body inner cylinder wall 8 and outer cylindrical wall 2, in the present embodiment, described magnetic pole 6 is a trapezium structure, at permanent magnet 4 outside suit magnet exciting coils 3.Narrow utmost point internal magnetic circuit 5 is installed between described permanent magnet and the magnetic pole.The bottom of disk body 1 cast plasticity silica gel 9 sealing and the insulation to guarantee coil is cast with the epoxy resin 7 of enough hardness on silica gel 9, this sucker is by the wire hole outlet on the outer cylindrical wall, and terminal box 10 is equipped with in sucker outer cylindrical wall outside.
Sucker size of the present utility model can be according to the dimensioned of high speed train wheel, and its power supply can be to special manufacturer's customization of making control appliance.
Operation principle of the present utility model is: by behind the coil 3, make permanent magnet 4 magnetization as enough big direct current (constant or pulsating all can), the remanent magnetism that utilizes permanent magnet is to the workpiece adhesive; When flowing through coil, permanent magnet demagnetizes gradually as the electric current of alternation and decay gradually, also demagnetization gradually of workpiece in the sucker degaussing process, thus reach the purpose of demagnetization.
This sucker was done test at the Taiyuan heavy industry, and its remanent magnetism maximum only is 1GS.
Claims (1)
1. little remanent magnetism electric permanent-magnet suction disc, comprise the annular disk body, affixed inner cylinder wall and outer cylindrical wall on disk body, install the permanent magnet and the magnetic pole that have magnet exciting coil in the annular groove between disk body inner cylinder wall and outer cylindrical wall, the outside suit magnet exciting coil of permanent magnet, it is characterized in that: described magnetic pole is a trapezium structure, and narrow utmost point internal magnetic circuit is installed between described permanent magnet and the magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201509608U CN202079528U (en) | 2011-05-12 | 2011-05-12 | Electric permanent magnetic chuck with micro remanent magnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201509608U CN202079528U (en) | 2011-05-12 | 2011-05-12 | Electric permanent magnetic chuck with micro remanent magnetism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079528U true CN202079528U (en) | 2011-12-21 |
Family
ID=45340182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201509608U Expired - Lifetime CN202079528U (en) | 2011-05-12 | 2011-05-12 | Electric permanent magnetic chuck with micro remanent magnetism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU170598U1 (en) * | 2016-06-01 | 2017-05-02 | Общество с ограниченной ответственностью "Гелпми" | MANUAL MAGNETIC CAPTURE |
| CN111085953A (en) * | 2019-12-23 | 2020-05-01 | 牛宗岭 | Clamping device for aluminum alloy short tube with tight clamping and small abrasion |
-
2011
- 2011-05-12 CN CN2011201509608U patent/CN202079528U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU170598U1 (en) * | 2016-06-01 | 2017-05-02 | Общество с ограниченной ответственностью "Гелпми" | MANUAL MAGNETIC CAPTURE |
| CN111085953A (en) * | 2019-12-23 | 2020-05-01 | 牛宗岭 | Clamping device for aluminum alloy short tube with tight clamping and small abrasion |
| CN111085953B (en) * | 2019-12-23 | 2021-08-27 | 嘉兴亚玛金属制品股份有限公司 | Clamping device for aluminum alloy short tube with tight clamping and small abrasion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |