CN108262659A - A kind of rectangular magnetic thin slice edging device - Google Patents

A kind of rectangular magnetic thin slice edging device Download PDF

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Publication number
CN108262659A
CN108262659A CN201810247663.1A CN201810247663A CN108262659A CN 108262659 A CN108262659 A CN 108262659A CN 201810247663 A CN201810247663 A CN 201810247663A CN 108262659 A CN108262659 A CN 108262659A
Authority
CN
China
Prior art keywords
thin slice
magnetic thin
rectangular magnetic
edging
rectangular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810247663.1A
Other languages
Chinese (zh)
Inventor
董亿贵
陈亮
刘向阳
刘飞阳
刘会武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Jin Kunxin Materials Ltd By Share Ltd
Original Assignee
Dongguan Jin Kunxin Materials Ltd By Share Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Jin Kunxin Materials Ltd By Share Ltd filed Critical Dongguan Jin Kunxin Materials Ltd By Share Ltd
Priority to CN201810247663.1A priority Critical patent/CN108262659A/en
Publication of CN108262659A publication Critical patent/CN108262659A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/005Feeding or manipulating devices specially adapted to grinding machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/02Frames; Beds; Carriages
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00Apparatus or processes for magnetising or demagnetising
    • H01F13/003Methods and devices for magnetising permanent magnets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The present invention relates to rectangular tab grinding technique fields, a kind of rectangular magnetic thin slice edging device are in particular disclosed, including mechanism and the edging mechanism of magnetizing;Edging mechanism includes two emery wheels of rotation setting, the first actuator for driving two emery wheel rotations, on the contrary, the rotating speed of two emery wheels is identical, the rectangular magnetic thin slice for forming strip cuboid is located between two emery wheels the rotation direction of two emery wheels;In actual use, the mechanism that magnetizes is used to magnetize to rectangular magnetic thin slice, rectangular magnetic chip sorption after magnetizing forms strip cuboid together, edging mechanism carries out automatic edging to the rectangular magnetic thin slice for forming strip cuboid, so that the width or length of rectangular magnetic thin slice become smaller, rectangular magnetic thin slice is placed in fixture manually without operating personnel and then Handheld clamp carries out edging to rectangular magnetic thin slice manually again, greatly promotes the edging efficiency of rectangular magnetic thin slice and edging quality.

Description

A kind of rectangular magnetic thin slice edging device
Technical field
The present invention relates to rectangular tab grinding technique fields, in particular disclose a kind of rectangular magnetic thin slice edging device.
Background technology
In the manufacturing process of rectangular magnetic thin slice, part can usually occur and manufacture undesirable situation, for example, rectangular magnetic Pit can occur for the edge of thin slice, at this time if rectangular magnetic thin slice abandoned, can cause the larger wasting of resources;If directly Rectangular magnetic thin slice is melted and is remanufactured, and the manufacture cost of rectangular magnetic thin slice can be greatly promoted.
Main methods of the prior art are to carry out edging processing to rectangular magnetic thin slice so that rectangular magnetic thin slice Width become smaller (or length becomes smaller) to be applicable in the part demand compared with ting model, since the thickness of rectangular magnetic thin slice is smaller, make Industry personnel can not directly hold rectangular magnetic thin slice and carry out edging processing, need to configure special fixture, operating personnel's hand at this time Dynamic that the rectangular magnetic thin slice for treating edging is fitted into fixture, then Handheld clamp cooperation edge polisher carries out edging, edging efficiency again It is extremely low;Also easily cause edging bad in addition, operating personnel's Handheld clamp carries out edging.
Invention content
In order to overcome shortcoming and defect in the prior art, the purpose of the present invention is to provide a kind of rectangular magnetic is thin Piece edging device, the rectangular magnetic chip sorption after the mechanism that magnetizes magnetic form strip cuboid together, and edging mechanism is to forming The rectangular magnetic thin slice of strip cuboid carries out automatic edging, greatly promotes the edging efficiency of rectangular magnetic thin slice and edging matter Amount.
To achieve the above object, a kind of rectangular magnetic thin slice edging device of the invention, including mechanism and the edge polisher of magnetizing Structure, the mechanism that magnetizes are used to magnetize to extraneous rectangular magnetic thin slice, the mechanism that magnetizes magnetize after rectangular magnetic chip sorption Strip cuboid is formed together, and edging mechanism is used to form the two of the rectangular magnetic thin slice of strip cuboid to being attached together Side carries out edging;Two emery wheels of the edging mechanism including rotation setting, the first actuator for driving two emery wheels rotations, two The rotation direction of a emery wheel has gap, forms strip cuboid on the contrary, the rotating speed of two emery wheels is identical between two emery wheels Rectangular magnetic thin slice is located in the gap between two emery wheels, and emery wheel forms the rectangular magnetic thin slice of strip cuboid for being ground Edge.
Wherein, two emery wheels are spaced and are arranged in parallel, and the central axis of two emery wheels is collinearly set, two mills The end face of wheel is respectively used to the edge that grinding forms the rectangular magnetic thin slice of strip cuboid.
Wherein, the edging device further includes frame body and feed mechanism, and feed mechanism, edging mechanism may be contained within frame body, Feed mechanism includes the on-magnetic support for being set to frame body, and on-magnetic support is equipped with delivery chute, and delivery chute is used to be installed with to form item The rectangular magnetic thin slice of shape cuboid, edging mechanism are used to be ground the rectangular magnetic thin slice of the strip cuboid of delivery chute output Edge.
Wherein, the feed mechanism further include be slideably positioned in on-magnetic support push piece, for drive push piece slide Second actuator, push piece slip are located in delivery chute, and push piece is used to contradict the rectangle of strip cuboid being installed in delivery chute Magnetic flakes.
Wherein, the edging device further includes support element, and support element is located in the gap between two emery wheels, and support element is set There is supporting plane, supporting plane is used to support the rectangular magnetic thin slice to form strip cuboid.
Wherein, the support element is slideably positioned in frame body, and frame body is provided with the third driving slided for driving support member Part, the glide direction of support element and the length direction of delivery chute are vertically arranged.
Wherein, the supporting plane is parallel to horizontal plane.
Wherein, the edging device further includes cooling body, and cooling body is used for supporting to emery wheel and rectangular magnetic thin slice Synapsis conveys coolant.
Wherein, the on-magnetic support is made of aluminium alloy.
Wherein, the thickness of the rectangular magnetic thin slice is 0.5-2mm.
Beneficial effects of the present invention:In actual use, the mechanism that magnetizes is for magnetizing to rectangular magnetic thin slice, after magnetizing Rectangular magnetic chip sorption form strip cuboid together, edging mechanism is to forming the rectangular magnetic thin slice of strip cuboid Carry out automatic edging so that the width of rectangular magnetic thin slice becomes smaller or length becomes smaller, without operating personnel manually by rectangular magnetic Thin slice is placed in fixture and then Handheld clamp carries out edging to rectangular magnetic thin slice manually again, and it is thin to greatly promote rectangular magnetic The edging efficiency of piece and edging quality.
Description of the drawings
Fig. 1 is the vertical view of the present invention;
Fig. 2 is the right view that the present invention hides magnetize mechanism and feed mechanism.
Reference numeral includes:
1-the mechanism that magnetizes, 2-edging mechanism, 3-emery wheel
4-the first actuator 5-frame body, 6-feed mechanism
7-on-magnetic support, 8-delivery chute, 9-push piece
11-support element, 12-supporting plane, 13-third actuator
14-cooling body.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and attached drawing Bright, the content that embodiment refers to not is limitation of the invention.
It please refers to Fig.1 to shown in Fig. 2, a kind of rectangular magnetic thin slice edging device of the invention, including mechanism 1 and the mill of magnetizing Side mechanism 2, the mechanism that magnetizes 1 are used to magnetize to extraneous rectangular magnetic thin slice, and the rectangular magnetic after the mechanism that magnetizes 1 magnetizes is thin Piece has magnetism, have it is magnetic after rectangular magnetic thin slice can first place be attached together to form strip cuboid, actually use When, bar-shaped trough (not shown) can be set in the mechanism 1 that magnetizes, multiple rectangular magnetic thin slice layer stackup addition strips are long Cube is put into bar-shaped trough, and after the mechanism 1 that magnetizes magnetizes to rectangular magnetic thin slice, bar-shaped trough interior-layer layer heap addition strip is rectangular The rectangular magnetic thin slice of body can first place be attached together;Also multiple rectangular magnetic lamina stacks can be accumulated and is placed on the mechanism 1 that magnetizes It inside magnetizes, the rectangular magnetic flake alignment after then magnetizing using manipulator or manually is long into the strip being attached together Cube, the both sides that edging mechanism 2 is used to be formed the rectangular magnetic thin slice of strip cuboid to being attached together carry out edging.
The edging mechanism 2 includes two emery wheels 3 of rotation setting, the first driving for two emery wheels 3 to be driven to rotate Part 4, the first actuator 4 are motor, and the rotation direction of two emery wheels 3 is on the contrary, the rotating speed of two emery wheels 3 is identical, it is preferable that first The quantity of actuator 4 is one, two emery wheels 3 is driven to rotate simultaneously using first actuator 4, it is ensured that two emery wheels 3 can It is operated with synchronous;Furthermore, it is possible to first actuator 4 is respectively driven into two 3 turns of emery wheels by two identical retarders It is dynamic, effectively ensure that the rotating speed of two emery wheels 3 is identical.Certainly, according to actual needs, the quantity of the first actuator 4 can be two, Two the first actuators 4 respectively drive two emery wheels 3 and rotate at this time, can two the first actuators 4 be shared a driver, It controls the rotation of two emery wheels 3 simultaneously using a driver, is effectively ensured that two 3 rotating speeds of emery wheel are equal and synchronous start and stop.
There is gap, i.e. two emery wheels 3 are arranged at intervals, and the rectangular magnetic for forming strip cuboid is thin between two emery wheels 3 Piece is located in the gap between two emery wheels 3, and emery wheel 3 forms the edge of the rectangular magnetic thin slice of strip cuboid for grinding, According to actual needs, emery wheel 3 can be ground the widthwise edges of rectangular magnetic thin slice or length edge.
In actual use, for magnetizing to rectangular magnetic thin slice, the rectangular magnetic thin slice after magnetizing is inhaled for the mechanism that magnetizes 1 Formation strip cuboid together is attached to, then will form the rectangular magnetic thin slice of strip cuboid along between two emery wheels 3 Gap conveys, and the emery wheel 3 of rotation can carry out automatic edging to the rectangular magnetic thin slice for forming strip cuboid so that rectangular magnetic The width of thin slice becomes smaller or length becomes smaller so that the rectangular magnetic thin slice of (or after length becomes smaller) is suitable for smaller after width becomes smaller Rectangular magnetic thin slice without operating personnel is placed in fixture and then Handheld clamp is manual again by the part demand of model manually Edging is carried out to rectangular magnetic thin slice, greatly promotes the edging efficiency of rectangular magnetic thin slice and edging quality.
In the present embodiment, two emery wheels 3 are spaced and are arranged in parallel, and the central axis of two emery wheels 3 is collinearly set It puts, the radius of two emery wheels 3 is equal, and the end face of two emery wheels 3 is arranged in parallel, and has gap, shape between the end face of two emery wheels 3 The rectangular magnetic thin slice of cuboid is located in the gap between the end face of two 3 sides close to each other of emery wheel into strips, two mills The end face of wheel 3 is respectively used to the edge that grinding forms the rectangular magnetic thin slice of strip cuboid.
The edging device further includes frame body 5 and feed mechanism 6, and feed mechanism 6, edging mechanism 2 are arranged at frame body 5 On, feed mechanism 6 includes the on-magnetic support 7 being arranged on frame body 5, and delivery chute 8, delivery chute 8 are provided on on-magnetic support 7 It forms the top surface of on-magnetic support 7 is recessed, delivery chute 8 is in the horizontal direction through on-magnetic support 7, and delivery chute 8 is for being installed with The rectangular magnetic thin slice of strip cuboid is formed, edging mechanism 2 is used to be ground the rectangle magnetic of the strip cuboid of the output of delivery chute 8 The edge of property thin slice so that the width of rectangular magnetic thin slice becomes smaller or length becomes smaller.
In actual use, the rectangular magnetic thin slice for forming strip cuboid is put into delivery chute 8, it is then manually or sharp The rectangular magnetic thin slice that strip cuboid is formed with robot drives is moved along the length direction of delivery chute 8 so that forms strip One end of the rectangular magnetic thin slice of cuboid enters between two emery wheels 3, and emery wheel 3 can be to the rectangle magnetic of formation strip cuboid The edge of property thin slice is ground.
The feed mechanism 6 further includes the push piece 9 being slidably arranged on on-magnetic support 7, for driving push piece 9 relatively non- The second actuator (not shown) that magnetic bracket 7 slidably reciprocates, the slip of push piece 9 are installed in delivery chute 8, and push piece 9 is used for Contradict the rectangular magnetic thin slice of strip cuboid being installed in delivery chute 8.
After the rectangular magnetic thin slice for forming strip cuboid is put into delivery chute 8,9 edge of the second actuator driving push piece Delivery chute 8 moves, and mobile push piece 9 contradicts the rectangular magnetic thin slice of the formation strip cuboid in delivery chute 8, with push piece 9 Lasting movement, push piece 9 can push to form the rectangular magnetic thin slice of strip cuboid between two emery wheels 3, later two The end face of a emery wheel 3 can carry out grinding processing to the rectangular magnetic thin slice for forming strip cuboid.
The edging device further includes support element 11, it is preferable that support element 11 is equally made of non-magnetic material, example Such as, support element 11 is made of aluminium alloy or plastics, and support element 11 is located in the gap between two emery wheels 3, support element 11 Width is less than the distance between two emery wheels 3, prevents from causing support element 11 ground due to support element 11 contacts emery wheel 3;Support Supporting plane 12 is provided on part 11, supporting plane 12 is the top surface of support element 11, and supporting plane 12 is used to support to form strip The rectangular magnetic thin slice of cuboid.
After the rectangular magnetic thin slice for forming strip cuboid is exported from delivery chute 8, the rectangle magnetic of strip cuboid is formed Property thin slice be moved on supporting plane 12, emery wheel 3 can to supporting plane 12 support formation strip cuboid rectangular magnetic The edge of thin slice is ground.
The support element 11 is slidably arranged on frame body 5, and frame body 5 is provided with to slidably reciprocate for driving support member 11 Three actuators 13, the glide direction and the length direction of delivery chute 8 of support element 11 are vertically arranged, in the present embodiment, support element 11 It vertically slides up and down, in actual use, according to the height size of rectangular tab, 13 driving support member 11 of third actuator It slides up and down, and then adjusts height of the supporting plane 12 apart from horizontal plane, so that the rectangular magnetic that supporting plane 12 is supported The height of thin slice relative level.Preferably, supporting plane 12 is parallel to horizontal plane.
The edging device further includes the cooling body 14 being arranged on frame body 5, and cooling body 14 is used for emery wheel 3 and square Coolant is conveyed at the conflict of shape magnetic flakes, for example, cooling body 14 includes the pump housing and the multiple nozzles connected with the pump housing, pump Body is used to extracting extraneous coolant, and it is thin with rectangular magnetic that via multiple nozzles the coolant extracted is ejected into emery wheel 3 At the conflict of piece.During the use of edging device, when high-speed rotation emery wheel 3 carries out edging to rectangular magnetic thin slice, rectangle Magnetic flakes and the temperature of emery wheel 3 can all increase, and be cooled down at this time using coolant to emery wheel 3 and rectangular magnetic thin slice, prevent Only rectangular magnetic thin slice melts, while prevent emery wheel 3 from grinding force being caused to decline due to temperature is excessively high due to temperature is excessively high.
The on-magnetic support 7 is made of aluminium alloy, when the rectangular magnetic thin slice for forming strip cuboid is installed with defeated After sending in slot 8, the rectangular magnetic thin slice for avoiding the formation of strip cuboid is attached together with stent and cannot normally convey.Phase Made of plastic, the intensity of enhancing on-magnetic support 7 is adopted compared with on-magnetic support 7, extends the service life of on-magnetic support 7.
The thickness of the rectangular magnetic thin slice is 0.5-2mm, when the thickness of rectangular magnetic thin slice is less than 0.5mm, directly It is remanufactured after rectangular magnetic thin slice is melted;When the thickness of rectangular magnetic thin slice is more than 2mm, when emery wheel 3 is ground square It can lead to that rectangular magnetic web temperature is excessively high and damages during shape magnetic flakes, be needed rectangle at this time using extraneous cutting mechanism Magnetic flakes are cut, and the rectangular magnetic thin slice edging device of the present invention is then recycled to carry out edging.
More than content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention Thought, there will be changes, the content of the present specification should not be construed as to the present invention in specific embodiments and applications Limitation.

Claims (10)

1. a kind of rectangular magnetic thin slice edging device, it is characterised in that:Including mechanism and the edging mechanism of magnetizing, the mechanism that magnetizes is used for Magnetize to extraneous rectangular magnetic thin slice, the mechanism that magnetizes magnetize after rectangular magnetic chip sorption to form strip together long Cube, the both sides that edging mechanism is used to be formed the rectangular magnetic thin slice of strip cuboid to being attached together carry out edging;Edging Mechanism includes two emery wheels of rotation setting, the first actuator for driving two emery wheel rotations, the rotation side of two emery wheels To on the contrary, the rotating speed of two emery wheels is identical, between two emery wheels there is gap, form the rectangular magnetic thin slice position of strip cuboid In gap between two emery wheels, emery wheel forms the edge of the rectangular magnetic thin slice of strip cuboid for grinding.
2. rectangular magnetic thin slice edging device according to claim 1, it is characterised in that:Two emery wheels are spaced And be arranged in parallel, the central axis of two emery wheels is collinearly set, and the end faces of two emery wheels is respectively used to grinding, and to form strip rectangular The edge of the rectangular magnetic thin slice of body.
3. rectangular magnetic thin slice edging device according to claim 1, it is characterised in that:The edging device further includes frame Body and feed mechanism, feed mechanism, edging mechanism may be contained within frame body, and feed mechanism includes being set to the non magnetic branch of frame body Frame, on-magnetic support are equipped with delivery chute, and delivery chute is used to be installed with the rectangular magnetic thin slice to form strip cuboid, and edging mechanism is used In the edge of the rectangular magnetic thin slice of the strip cuboid of grinding delivery chute output.
4. rectangular magnetic thin slice edging device according to claim 3, it is characterised in that:The feed mechanism further includes cunning The dynamic push piece for being set to on-magnetic support, the second actuator for push piece to be driven to slide, push piece slip are located in delivery chute, Push piece is used to contradict the rectangular magnetic thin slice for the strip cuboid being installed in delivery chute.
5. rectangular magnetic thin slice edging device according to claim 3, it is characterised in that:The edging device further includes branch Support member, support element are located in the gap between two emery wheels, and support element is equipped with supporting plane, and supporting plane is used to support to form item The rectangular magnetic thin slice of shape cuboid.
6. rectangular magnetic thin slice edging device according to claim 5, it is characterised in that:The support element is slideably positioned in Frame body, frame body are provided with the third actuator slided for driving support member, the glide direction of support element and the length of delivery chute Direction is vertically arranged.
7. rectangular magnetic thin slice edging device according to claim 5, it is characterised in that:The supporting plane is parallel to water Plane.
8. rectangular magnetic thin slice edging device according to claim 1, it is characterised in that:The edging device further includes cold But mechanism, cooling body are used to convey coolant at the conflict of emery wheel and rectangular magnetic thin slice.
9. rectangular magnetic thin slice edging device according to claim 3, it is characterised in that:The on-magnetic support uses aluminium Alloy is made.
10. rectangular magnetic thin slice edging device according to claim 1, it is characterised in that:The rectangular magnetic thin slice Thickness is 0.5-2mm.
CN201810247663.1A 2018-03-23 2018-03-23 A kind of rectangular magnetic thin slice edging device Pending CN108262659A (en)

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Application Number Priority Date Filing Date Title
CN201810247663.1A CN108262659A (en) 2018-03-23 2018-03-23 A kind of rectangular magnetic thin slice edging device

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CN110385652A (en) * 2019-07-26 2019-10-29 杭州逢源信息科技有限公司 A kind of Non-contact type computer hard disk process equipment using electromagnetic relationship
CN111640566A (en) * 2020-05-20 2020-09-08 杭州三炻磁性材料有限公司 Process method for pressing constant-pressure constant-magnetism samarium cobalt powder

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110385652A (en) * 2019-07-26 2019-10-29 杭州逢源信息科技有限公司 A kind of Non-contact type computer hard disk process equipment using electromagnetic relationship
CN110385652B (en) * 2019-07-26 2020-12-29 广东卓柏信息科技有限公司 Non-contact computer hard disk processing equipment utilizing electromagnetic relation
CN111640566A (en) * 2020-05-20 2020-09-08 杭州三炻磁性材料有限公司 Process method for pressing constant-pressure constant-magnetism samarium cobalt powder
CN111640566B (en) * 2020-05-20 2021-09-21 杭州三炻磁性材料有限公司 Process method for pressing constant-pressure constant-magnetism samarium cobalt powder

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