CA2527339C - Controllable electromagnetic bench work piece holder - Google Patents
Controllable electromagnetic bench work piece holder Download PDFInfo
- Publication number
- CA2527339C CA2527339C CA002527339A CA2527339A CA2527339C CA 2527339 C CA2527339 C CA 2527339C CA 002527339 A CA002527339 A CA 002527339A CA 2527339 A CA2527339 A CA 2527339A CA 2527339 C CA2527339 C CA 2527339C
- Authority
- CA
- Canada
- Prior art keywords
- electromagnet
- holder
- mounting
- work piece
- magnetic force
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
- B23Q3/154—Stationary devices
- B23Q3/1543—Stationary devices using electromagnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/20—Electromagnets; Actuators including electromagnets without armatures
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Treatment Devices (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The present invention relates to a material holding device using magnetic force of variable strength. The invention comprises an electromagnet mounted to a universal bracket that is adapted to mount to a vertical or horizontal surface. The electromagnet may also mount to a vise using the vise bar integrally attached to the underside of the magnet. The invention further includes a foot switch for on/off activation. A timer is provided to supply power for a predetermined amount of time only to prevent overheating of the magnet. The electromagnet has at least two selectable forces. The invention frees the hands of the user for speedy manipulation of the work piece.
Description
TITLE OF THE INVENTION
CONTROLLABLE ELECTROMAGNETIC BENCH WORK PIECE HOLDER
FIELD OF THE INVENTION
The present invention relates to a material holding device, specifically to the electromagnetic work holder, and more precisely to the controllable electromagnetic bench work piece holder.
BACKGROUND OF THE INVENTION
Particularly in the welding trade, steel and other materials of magnetic attraction are most commonly used. Oftentimes, smaller pieces are difficult to hold in position so as to perform welding, cutting and grinding thereon. Clamps as well as large permanent magnets are commonly used to fix the pieces in place, and as of late, electromagnets are also being used to provide more ease of use. Additionally, users tend to simply hold work pieces with one hand and the tool in the other hand, creating a potentially dangerous situation. Unfortunately, electromagnets of this magnitude may become overheated if left active for a prolonged length of time.
Furthermore current work magnets are of single strength and usually form part of a complete work surface.
CONTROLLABLE ELECTROMAGNETIC BENCH WORK PIECE HOLDER
FIELD OF THE INVENTION
The present invention relates to a material holding device, specifically to the electromagnetic work holder, and more precisely to the controllable electromagnetic bench work piece holder.
BACKGROUND OF THE INVENTION
Particularly in the welding trade, steel and other materials of magnetic attraction are most commonly used. Oftentimes, smaller pieces are difficult to hold in position so as to perform welding, cutting and grinding thereon. Clamps as well as large permanent magnets are commonly used to fix the pieces in place, and as of late, electromagnets are also being used to provide more ease of use. Additionally, users tend to simply hold work pieces with one hand and the tool in the other hand, creating a potentially dangerous situation. Unfortunately, electromagnets of this magnitude may become overheated if left active for a prolonged length of time.
Furthermore current work magnets are of single strength and usually form part of a complete work surface.
It became apparent to the inventor of the present invention to devise an universal bench magnet incorporating the valuable functions of magnetism, while providing overheat-protection means, a safer work piece holding means as well the liberty to mount the bench magnet of the present invention to virtually any bench, or even a vise.
While electromagnets have been used as a holding means in the past, prior art teaches of no such apparatus that provides user with all the benefits of the present invention.
While electromagnets have been used as a holding means in the past, prior art teaches of no such apparatus that provides user with all the benefits of the present invention.
SUMMARY OF THE INVENTION
It is thus the object of the present invention to provide users with an universal bench magnet incorporating the valuable functions of adjustable magnetism, while providing overheat-safety means, a safer work piece holding means as well as the liberty to mount the bench magnet of the present invention to virtually any bench, or even a vise.
In one aspect of the invention, the size of the bench magnet may be adapted to suit various industries.
In another aspect of the invention, the overheat-protection device may be that of either a timer or a heat sensor.
Accordingly, the universal bench magnet of the present invention allows users to safely free their hands from accurately holding work pieces, allow repositioning of said work pieces more speedily, adjust the magnetic force all while protecting said bench magnet from overheating.
It is thus the object of the present invention to provide users with an universal bench magnet incorporating the valuable functions of adjustable magnetism, while providing overheat-safety means, a safer work piece holding means as well as the liberty to mount the bench magnet of the present invention to virtually any bench, or even a vise.
In one aspect of the invention, the size of the bench magnet may be adapted to suit various industries.
In another aspect of the invention, the overheat-protection device may be that of either a timer or a heat sensor.
Accordingly, the universal bench magnet of the present invention allows users to safely free their hands from accurately holding work pieces, allow repositioning of said work pieces more speedily, adjust the magnetic force all while protecting said bench magnet from overheating.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other advantages of the invention will become apparent upon reading the following brief description and upon referring to the drawings in which:-FIGURE 1 is a perspective view from above of the universal bench magnet of the present invention.
FIGURE 2 is a perspective view from above of the universal bench magnet of the present invention shown holding a work piece.
FIGURE 3 is a front elevation view of the universal bench magnet of the present invention shown mounted onto a planar surface.
FIGURE 4 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown clamped into a conventional vise.
FIGURE 5 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown flush-mounted under a planar surface.
FIGURE 6 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown mounted under a thin planar surface.
FIGURE 7 is a top plan view of the universal bench magnet of the present invention along with a brief schematic of the key operative components of the device.
While the invention is described in conjunction with preferred illustrated embodiments, it will be understood that it is not intended to limit the invention to such embodiments.
On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defmed by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In the following description, similar features in the drawings have been given similar reference numerals.
Turning to the drawings, in particular, Figure 1, a perspective view from above of the 5 electromagnet portion of the universal bench magnet of the present invention comprising: a housing 2 generally cylindrically shaped, a wound coil within said housing, mounting tabs 3 having perforations 4 therethrough and integral with the upper surface 14 of the housing 2, an inner coil coolant material, overheat protection means, and a vise clamping bar 8 fixedly attached to the bottom portion of the housing 2 and spanning generally equally to the diameter of the housing 2.
Now turning to Figure 2, which illustrates a perspective view of the assembly of the universal bench magnet of the present invention comprising; an electromagnet portion having a housing 2, a wound coil within said housing, mounting tabs, an inner coil coolant, overheat protection means, and a vise clamping bar 8, a universal mounting bracket 12 comprising: an electromagnet-attaching portion 14, and a bench attaching portion 16 having a plurality of perforations 17 therethrough to provide attaching means to a flat surface, a control system comprising: a power supply, an AC-DC transformer and rectifier, a current fuse, a timer, a heat sensor, an activating switch, and a power selector switch. When the foot-switch is closed, enabling the electroma.gnet, a work piece 6 can be held in a desired position then easily released by opening said foot-switch.
Turning now to Figure 3, a front elevation view of the universal bench magnet of the present invention as showed mounted onto a flat surface 5 using the universal mounting bracket 12.
The universal mounting bracket 12 comprises: a top planar electromagnet-holding portion 14 generally larger than the mating electromagnet, two vertically and downwardly protruding side members extending equally or below the height of said electromagnet, and horizontal mounting flanges 16 extending from the lower portion of the vertical side members so as to provide bench connecting means.
Turning to Figure 4, further illustrating a front elevation view of the universal bench magnet of the present invention as shown mounted to a conventional bench vise using the vise-clamping bar 8 pressuredly inserted between vise jaws.
Turning now to Figure 5, illustrating a front elevation view of the universal bench magnet of the present invention showing an alternative mounting method of said universal bench magnet wherein the uppermost surface of the mounting bracket 12 is flush with the upper surface of the bench 5.
Turning to Figure 6, a front elevation view of the universal bench magnet without the universal mounting bracket wherein the electromagnet portion is securedly attached to the underside of a planar surface such as a steel work bench 5 via two recessed bolts 17.
Turning to Figure 7, a top plan view of the universal bench magnet of the present invention along with a brief schematic of the key operative components of the device wherein the electromagnet, mounted either to a bench surface using the universal mounting bracket 12 with bolts, or clamped into a vise jaw using the vise clamping bar, is powered and controlled by means of the following: household AC power outlets 20 feed a control panel adapted with a fuse 21 then transformed from AC to DC using a transformer and rectifier 22. A timer 23 is activated once the magnet is activated in the event the user forgets to turn the unit off. A
selector switch 25 allows the user to select the magnetic force exerted by the magnet so as to allow easier placement of work piece prior to full-force holding. A foot switch 24 safely frees the user's hands to activate the bench magnet and perform work using both hands on the tool.
These and other advantages of the invention will become apparent upon reading the following brief description and upon referring to the drawings in which:-FIGURE 1 is a perspective view from above of the universal bench magnet of the present invention.
FIGURE 2 is a perspective view from above of the universal bench magnet of the present invention shown holding a work piece.
FIGURE 3 is a front elevation view of the universal bench magnet of the present invention shown mounted onto a planar surface.
FIGURE 4 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown clamped into a conventional vise.
FIGURE 5 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown flush-mounted under a planar surface.
FIGURE 6 is a front elevation view of an alternative mounting of the universal bench magnet of the present invention shown mounted under a thin planar surface.
FIGURE 7 is a top plan view of the universal bench magnet of the present invention along with a brief schematic of the key operative components of the device.
While the invention is described in conjunction with preferred illustrated embodiments, it will be understood that it is not intended to limit the invention to such embodiments.
On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defmed by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In the following description, similar features in the drawings have been given similar reference numerals.
Turning to the drawings, in particular, Figure 1, a perspective view from above of the 5 electromagnet portion of the universal bench magnet of the present invention comprising: a housing 2 generally cylindrically shaped, a wound coil within said housing, mounting tabs 3 having perforations 4 therethrough and integral with the upper surface 14 of the housing 2, an inner coil coolant material, overheat protection means, and a vise clamping bar 8 fixedly attached to the bottom portion of the housing 2 and spanning generally equally to the diameter of the housing 2.
Now turning to Figure 2, which illustrates a perspective view of the assembly of the universal bench magnet of the present invention comprising; an electromagnet portion having a housing 2, a wound coil within said housing, mounting tabs, an inner coil coolant, overheat protection means, and a vise clamping bar 8, a universal mounting bracket 12 comprising: an electromagnet-attaching portion 14, and a bench attaching portion 16 having a plurality of perforations 17 therethrough to provide attaching means to a flat surface, a control system comprising: a power supply, an AC-DC transformer and rectifier, a current fuse, a timer, a heat sensor, an activating switch, and a power selector switch. When the foot-switch is closed, enabling the electroma.gnet, a work piece 6 can be held in a desired position then easily released by opening said foot-switch.
Turning now to Figure 3, a front elevation view of the universal bench magnet of the present invention as showed mounted onto a flat surface 5 using the universal mounting bracket 12.
The universal mounting bracket 12 comprises: a top planar electromagnet-holding portion 14 generally larger than the mating electromagnet, two vertically and downwardly protruding side members extending equally or below the height of said electromagnet, and horizontal mounting flanges 16 extending from the lower portion of the vertical side members so as to provide bench connecting means.
Turning to Figure 4, further illustrating a front elevation view of the universal bench magnet of the present invention as shown mounted to a conventional bench vise using the vise-clamping bar 8 pressuredly inserted between vise jaws.
Turning now to Figure 5, illustrating a front elevation view of the universal bench magnet of the present invention showing an alternative mounting method of said universal bench magnet wherein the uppermost surface of the mounting bracket 12 is flush with the upper surface of the bench 5.
Turning to Figure 6, a front elevation view of the universal bench magnet without the universal mounting bracket wherein the electromagnet portion is securedly attached to the underside of a planar surface such as a steel work bench 5 via two recessed bolts 17.
Turning to Figure 7, a top plan view of the universal bench magnet of the present invention along with a brief schematic of the key operative components of the device wherein the electromagnet, mounted either to a bench surface using the universal mounting bracket 12 with bolts, or clamped into a vise jaw using the vise clamping bar, is powered and controlled by means of the following: household AC power outlets 20 feed a control panel adapted with a fuse 21 then transformed from AC to DC using a transformer and rectifier 22. A timer 23 is activated once the magnet is activated in the event the user forgets to turn the unit off. A
selector switch 25 allows the user to select the magnetic force exerted by the magnet so as to allow easier placement of work piece prior to full-force holding. A foot switch 24 safely frees the user's hands to activate the bench magnet and perform work using both hands on the tool.
Claims (12)
1. A controllable electromagnetic bench work piece holder comprising an electromagnet for temporarily holding a work piece, said electromagnet disposed within a heat sink for dissipating heat generated by the electromagnet, magnetic force control means electrically connected to the electromagnet for varying the magnetic force thereof, a foot operated power switch between a power source and the electromagnet, overheat protection means for preventing the electromagnet from overheating and mounting means for mounting the electromagnet to a work surface.
2. The holder of claim 1, wherein said heat sink comprises a circular housing in direct contact with the electromagnet.
3. The holder of claim 2, wherein said magnetic force control means comprises a magnetic force selector switch serially disposed between said foot operated power switch and the electromagnet.
4. The holder of claim 3 wherein said magnetic force selector switch is selectable between at least two force settings.
5. The holder of claim 1, wherein said overheat protection means comprises a heat sensor disposed proximate to the electromagnet for detecting an overheat condition, where said heat sensor is electrically connected to said foot operated power switch for disconnecting power to the electromagnet during said overheat condition.
6. The holder of claim 5, wherein the overheat protection means further comprises a timed disconnect switch serially disposed between the foot operated power switch and the power source for disconnecting the power source from the electromagnetic following a predetermined amount of time.
7. The holder of claim 2, wherein said mounting means comprises a permanent mount and a temporary mount.
8. The holder of claim 7, wherein said permanent mount comprises a mounting bracket having a lower surface for mounting said circular housing, an upper surface for said work piece placement and mounting tabs for mounting said mounting bracket permanently to a work surface.
9. The holder of claim 7 wherein said temporary mount comprises a vise clamping bar projecting from the circular housing for temporary clamping in a vise.
10. A controllable electromagnetic bench work piece holder comprising an electromagnet for temporarily holding a work piece, said electromagnet mounted within a circular heat sink for dissipating heat generated by the electromagnet, a magnetic force selector switch serially disposed between the electromagnet and a power source for selection between at least two levels of magnetic force, a foot operated power switch serially disposed between said selector switch and said power source, an overheat protection sensor disposed proximate to the electromagnet for detecting an overheat condition, said sensor electrically connected to said foot operated power switch for power disconnection during said overheat condition and a mounting bracket having a lower surface for mounting said circular heat sink, an upper surface for said work piece placement and mounting tabs for mounting said mounting bracket permanently to a work surface.
11. The holder of claim 10, wherein the overheat protection means further comprises a timed disconnect switch serially disposed between the foot operated power switch and the power source for disconnecting the power source from the electromagnetic following a predetermined amount of time.
12. The holder of claim 10 further comprising a temporary mount comprising a vise clamping bar projecting from the circular housing for temporary clamping in a vise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002527339A CA2527339C (en) | 2005-12-07 | 2005-12-07 | Controllable electromagnetic bench work piece holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002527339A CA2527339C (en) | 2005-12-07 | 2005-12-07 | Controllable electromagnetic bench work piece holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2527339A1 CA2527339A1 (en) | 2007-06-07 |
| CA2527339C true CA2527339C (en) | 2010-03-09 |
Family
ID=38121265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002527339A Expired - Fee Related CA2527339C (en) | 2005-12-07 | 2005-12-07 | Controllable electromagnetic bench work piece holder |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2527339C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555798B (en) * | 2018-05-28 | 2023-10-24 | 中国电子科技集团公司第四十三研究所 | Bonding fixture and mechanical arm |
| CN114260839A (en) * | 2021-12-28 | 2022-04-01 | 江苏炳凯富汽车零部件制造有限公司 | Quick assembly workstation is used in production of vehicle air conditioner evaporimeter |
-
2005
- 2005-12-07 CA CA002527339A patent/CA2527339C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2527339A1 (en) | 2007-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20210831 |
|
| MKLA | Lapsed |
Effective date: 20191209 |