DE657789C - Electromagnetic hammer - Google Patents
Electromagnetic hammerInfo
- Publication number
- DE657789C DE657789C DEG87998D DEG0087998D DE657789C DE 657789 C DE657789 C DE 657789C DE G87998 D DEG87998 D DE G87998D DE G0087998 D DEG0087998 D DE G0087998D DE 657789 C DE657789 C DE 657789C
- Authority
- DE
- Germany
- Prior art keywords
- armature
- pole core
- electromagnetic hammer
- coil
- magnetic
- 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
Links
- 230000004907 flux Effects 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 3
- 229910000760 Hardened steel Inorganic materials 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910045601 alloy Inorganic materials 0.000 claims 2
- 239000000956 alloy Substances 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000004566 building material Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/064—Means for driving the impulse member using an electromagnetic drive
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
Description
Die vorliegende Erfindung betrifft elektromagnetische Hämmer mit beweglichem Schlagkern. Derartige Vorrichtungen enthalten eine zylindrische Magnetspule mit einem Polkern und einem im Inneren der Spule beweglichen Anker aus leicht magnetisierbarem Baustoff. Die Magnetspule wird im allgemeinen durch einen zeitweise unterbrochenen Gleichstrom erregt und erzeugt im Polkern und im AnkerThe present invention relates to electromagnetic hammers with a movable impact core. Such devices contain a cylindrical magnetic coil with a pole core and an armature made of easily magnetizable building material that can move inside the coil. The solenoid is generally operated by an intermittent direct current excited and generated in the pole core and in the armature
ίο einen magnetischen Fluß, der eine Bewegung des Ankers auslöst. Im allgemeinen wirkt der Fluß in dem Sinne, daß er den Anker dem Druck einer Feder entgegen in das Innere der Spule hineinzieht. Nach Unterbrechung des Stromes hört der magnetische Fluß auf; die Feder treibt dann den Anker vor und schlägt ihn dabei gegen einen im Hammergehäuse sitzenden Stößel. Der Anker kann auch durch die Spule vorgeworfen und durch die Feder zurückgezogen werden; jedoch ist diese Ausführungsform im allgemeinen weniger vorteilhaft. ίο a magnetic flux that has a movement of the anchor triggers. In general, the flow acts to anchor the Pressure of a spring pulls against it into the interior of the coil. After interruption of the The magnetic flow ceases with the current; the spring then drives the anchor forward and strikes it against a plunger seated in the hammer housing. The armature can also be thrown through the coil and through the Spring to be withdrawn; however, this embodiment is generally less advantageous.
Gegenstand der vorliegenden Erfindung ist eine besondere Ausgestaltung von Polkern und Anker, die auf die wirtschaftliche Ausnutzung der elektrischen Arbeit gerichtet ist. Zu diesem Zweck muß der magnetische Fluß am Ende des Schlagkernankerweges, d. h. wenn der Luftpfad zwischen Anker und PoI-kern ein Minimum ist, möglichst gering sein, • und die Kraftlinien müssen soweit als möglich parallel zur Bewegungsrichtung des Ankers verlaufen. Ferner» müssen die einander gegenüberliegenden Enden von Anker und Polstück so gestaltet sein, daß sie auch bei ganz kleinem magnetischem Fluß am Ende des Hubes praktisch gesättigt sind.The subject of the present invention is a special embodiment of the pole core and armature, which is aimed at the economical use of electrical work. For this purpose, the magnetic flux at the end of the percussion core anchor path, i.e. H. if the air path between the armature and the pole core is a minimum, be as small as possible, • and the lines of force must as far as possible be parallel to the direction of movement of the armature get lost. Furthermore, »the opposite ends of the armature and the pole piece must be designed so that they are also at very small magnetic flux at the end of the stroke are practically saturated.
Die Aufgabe der Ausnutzung der elektrischen Arbeit wird erfindungsgemäß dadurch gelöst, daß die einander gegenüberliegenden Enden von Polkern und Anker in Hohlkegel auslaufen, von denen der eine bei Annäherung der beiden Körper sich in den anderen hineinschieben kann. Die den Anker vortreibende Feder ist dabei so gelagert, daß sie von beiden Hohlkegeln umschlossen wird. Auf diese Weise verläuft der magnetische Fluß außen an der Schraubenfeder vorbei auf dem kürzesten Wege zwischen den Rändern der beiden Hohlkegel, die zwecks größtmöglicher Sättigung am Ende des Hubes schmal ausgebildet sind. Die Feder vermag unter diesen Umständen nicht den magnetischen Fluß zu stören, wie das bei bekannten Vorrichtungen der Fall ist, sondern ist eher geeignet, ihn zu unterstützen. Der magnetische Fluß selbst entwickelt sich etwa in Form eines Zylinders, dessen Achse mit der Achse der Anker- bzw. Schlagbolzenbahn übereinstimmt. Die magnetischen Kraftlinien wirken daher nahezu mit ihrer vollen Stärke in dem gewünschten Sinn, und es geht somit nur einThe task of utilizing the electrical work is thereby achieved according to the invention solved that the opposite ends of the pole core and armature in hollow cones run out, one of which when the two bodies approach each other can slide in. The spring driving the armature is mounted so that it is enclosed by both hollow cones. This is how the magnetic flux proceeds on the outside of the coil spring along the shortest path between the edges of the two hollow cones, which are narrow at the end of the stroke for the purpose of maximum saturation are. Under these circumstances, the spring cannot disturb the magnetic flux, as is the case with known devices is the case, but is more likely to support it. The magnetic flux itself develops roughly in the form of a cylinder, whose axis coincides with the axis of the Anchor or firing pin path matches. The magnetic lines of force therefore work almost at its full strength in the desired sense, and so it only comes in
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR657789X | 1934-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE657789C true DE657789C (en) | 1938-03-12 |
Family
ID=9008675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEG87998D Expired DE657789C (en) | 1934-03-06 | 1934-05-05 | Electromagnetic hammer |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE657789C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2726342A (en) * | 1955-01-13 | 1955-12-06 | Reeve Electrical Co Inc | Alternating current vibrating bell |
| DE1002448B (en) * | 1951-12-03 | 1957-02-14 | Thaddaeus Nowak | Electric oscillating armature motor operated with direct or alternating current |
| DE1163449B (en) * | 1957-06-10 | 1964-02-20 | Detroit Coil Co | Push pin for a repulsion electromagnet |
| DE976704C (en) * | 1941-05-10 | 1964-03-05 | Binder Magnete Kommanditgesell | Pull-push electromagnet |
| US4352645A (en) * | 1978-07-18 | 1982-10-05 | Sundstrand Corporation | Solenoid pump adapted for noiseless operation |
| US5231747A (en) * | 1990-12-21 | 1993-08-03 | The Boeing Company | Drill/rivet device |
| US5263236A (en) * | 1990-12-21 | 1993-11-23 | The Boeing Company | Drill quill bearing assembly |
-
1934
- 1934-05-05 DE DEG87998D patent/DE657789C/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976704C (en) * | 1941-05-10 | 1964-03-05 | Binder Magnete Kommanditgesell | Pull-push electromagnet |
| DE1002448B (en) * | 1951-12-03 | 1957-02-14 | Thaddaeus Nowak | Electric oscillating armature motor operated with direct or alternating current |
| US2726342A (en) * | 1955-01-13 | 1955-12-06 | Reeve Electrical Co Inc | Alternating current vibrating bell |
| DE1163449B (en) * | 1957-06-10 | 1964-02-20 | Detroit Coil Co | Push pin for a repulsion electromagnet |
| US4352645A (en) * | 1978-07-18 | 1982-10-05 | Sundstrand Corporation | Solenoid pump adapted for noiseless operation |
| US5231747A (en) * | 1990-12-21 | 1993-08-03 | The Boeing Company | Drill/rivet device |
| US5263236A (en) * | 1990-12-21 | 1993-11-23 | The Boeing Company | Drill quill bearing assembly |
| US5404633A (en) * | 1990-12-21 | 1995-04-11 | The Boeing Company | Method of dynamically supporting a drill quill in a drill/rivet machine |
| US5577315A (en) | 1990-12-21 | 1996-11-26 | The Boeing Company | Method of upsetting rivets |
| US5621963A (en) | 1990-12-21 | 1997-04-22 | The Boeing Company | Differential capacitance in an electromagnetic riveter |
| US5685058A (en) | 1990-12-21 | 1997-11-11 | The Boeing Company | Method for direct insertion of a headed rivet into a countersunk hole |
| US5752306A (en) | 1990-12-21 | 1998-05-19 | The Boeing Company | Method for upsetting a headed rivet by differential initiation of opposed electromagnetic rivet drivers |
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