CN108381468A - A kind of electrically operated hammer - Google Patents
A kind of electrically operated hammer Download PDFInfo
- Publication number
- CN108381468A CN108381468A CN201810459098.5A CN201810459098A CN108381468A CN 108381468 A CN108381468 A CN 108381468A CN 201810459098 A CN201810459098 A CN 201810459098A CN 108381468 A CN108381468 A CN 108381468A
- Authority
- CN
- China
- Prior art keywords
- iron core
- armature
- guiding axis
- coil
- wall
- 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.)
- Withdrawn
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 230000001133 acceleration Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000035699 permeability Effects 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
Abstract
A kind of electrically operated hammer comprising cricoid iron core（3）, first coil is installed in the recess portion of the upper ring surface of iron core（10）, guiding axis is inserted in iron core（8）, the both ends of guiding axis expose from iron core, and the top of guiding axis is connected with the first armature of plate-like（1）, the bottom end of guiding axis connects tup（9）, characterized in that the second coil is installed in the recess portion of the lower anchor ring of iron core（5）, the edge of anchor ring extends downwardly out a canister portion under iron core（6）, the inner wall of canister portion has certain taper, the second armature is connected in the lower part of guiding axis（7）, the second armature is peviform, and the outer wall of the second armature is matched with the inner wall of canister portion.Its main feature is that iron core attracts the resistance that spring is not present when the first armature compared with prior art, tup to have larger acceleration impact force strong；There is the outer wall of the inner wall of anchor ring canister portion and the second armature the taper of cooperation, the second coil the second iron core can be made to attract the second armature with smaller exciting current under iron core.
Description
Technical field
The present invention relates to a kind of electrically operated hammer, it is used for striking workpiece.
Background technology
The structure of electrically operated hammer generally comprises iron core, coil, armature, tup similar to electromagnet, and coil is sleeved on iron core, rank
Iron is connect with tup, the magnetic circuit constituted with armature equipped with spring, iron core between armature and iron core, when the coil is energized, iron core
Armature is attracted to strike workpiece, the elastic force of spring makes armature leave the i.e. tup reset of iron core when the coil is de-energized, and compartment of terrain is to line
Circle is powered, it can be achieved that continuous impact to workpiece.Its shortcoming is that it is to want against the force of the spring that iron core, which attracts armature, tup
Stroke more big spring active force it is bigger, the exciting current of coil also correspondingly increases；In addition the bigger iron core of the stroke of tup
Primary clearance between armature is also big, and the leakage field between the magnetic circuit that iron core and armature are constituted is big, i.e. the initial inductance of magnetic circuit is big,
This increases the exciting current of coil again.
Invention content
In view of the deficiencies of the prior art, the present invention proposes that a kind of electrically operated hammer, the electrically operated hammer are avoided that the negative interaction of spring, energy
It is effectively reduced leakage field, the impact force of tup is improved with smaller power.
The technical scheme is that a kind of electrically operated hammer comprising cricoid iron core 3, in the recess portion of the upper ring surface of iron core
First coil 10 is installed, guiding axis 8 is inserted in iron core, the both ends of guiding axis are exposed from iron core, the top connection of guiding axis
There is the first armature 1 of plate-like, the bottom end of guiding axis connects tup 9, characterized in that the is equipped in the recess portion of the lower anchor ring of iron core
Two coil 5, the edge of anchor ring extends downwardly out a canister portion 6 under iron core, and the inner wall of canister portion has certain taper, is being oriented to
The lower part of axis is connected with the second armature 7, and the second armature is peviform, and the outer wall of the second armature is matched with the inner wall of canister portion.
Iron core attracts the first armature, tup downlink to strike workpiece when first coil is powered；Iron core is inhaled when second coil is powered
Draw the second armature, tup uplink resets；Its main feature is that spring is not present when attracting the first armature in iron core compared with prior art
Resistance, tup have larger acceleration impact force strong；The outer wall of the inner wall of anchor ring canister portion and the second armature, which has, under iron core matches
The taper of conjunction, the gap between conical surface normal direction is smaller, and leakage field is few；Second coil can make second with smaller exciting current
Iron core attracts the second armature.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Attached drawing mark indicates respectively：The first armature of 1-, 2- upper limit columns, 3- iron cores, 4- frame bodies, the second coils of 5-, 6-
Portion, the second armature of 7-, 8- guiding axis, 9- tups, 10- first coils, 11- lower limit columns, 12- first coil magnetic fluxs path,
The path of the second coil fluxs of 13-.
Specific implementation mode
In conjunction with the specific implementation mode of the description of the drawings present invention.
A kind of electrically operated hammer comprising the outer circle of cricoid iron core 3, iron core is fixedly connected on the frame body 4 of electrically operated hammer workbench
On, have first coil 10 with epoxy encapsulation in the recess portion of the upper ring surface of iron core, be inserted with guiding axis 8 in iron core, guiding axis by
Permeability magnetic material（Such as mild steel）It is made, the both ends of guiding axis are exposed from iron core, and the top of guiding axis is connected with the first of plate-like
The bottom end of armature 1, guiding axis connects tup 9, characterized in that has second with epoxy encapsulation in the recess portion of the lower anchor ring of iron core
Coil 5, the edge of anchor ring extends downwardly out a canister portion 6 under iron core, and the inner wall of canister portion has certain taper, in guiding axis
Lower part be connected with the second armature 7, the second armature is peviform, and the outer wall of the second armature is matched with the inner wall of canister portion.
To prevent the first armature from bumping against with iron core, upper limit column 2 is equipped on frame body 4, the top of upper limit column is slightly above
The upper ring surface of iron core is equipped with lower limit column 11, the low side of lower limit column to prevent the second armature from bumping against with iron core on frame body 4
The slightly below bottom end of iron core canister portion.
The path of magnetic flux is as shown in the first dotted line 12 when first coil is powered, magnetic flux by the first half of iron core, iron core and
Gap, the first armature between first armature is around first coil；When first coil is powered, iron core attracts the first armature, tup
Downlink strikes workpiece；Since there is no spring resistance tup downlink when with larger acceleration, impact force is strong；Due to tup
With the effect of guiding axis dead weight, the magnetic resistance of magnetic circuit can reduce automatically, can reduce the exciting current of first coil.Second coil is powered
Shi Tiexin attracts the second armature, tup uplink to reset；If the structure of the second armature is identical as the first armature, tup is rigid
When starting uplink, the vertical range of the second armature and iron core is up to b, and the magnetic resistance of magnetic circuit is big；Using anchor ring canister portion under iron core
The outer wall of inner wall and the second armature has the structure of the taper of cooperation, and the path of the second coil flux is as shown in the second dotted line 13
（The vertical range of second armature and iron core is up to path when b）, when the vertical range of the second armature and iron core is up to b its
Gap between conical surface normal direction is a, and the magnetic resistance of magnetic circuit is small；The magnetic force of conical surface normal direction, can be analyzed to horizontal component and
Vertical stress component, vertical stress component can make the second iron core attract the second armature, such second coil that can make the with smaller exciting current
Two iron cores attract the second armature.
The taper=（The top diameter of the second armature of diameter at butt end-of second armature）/（The length of conical section）,
The range of taper can select between 2 to 2.5, and preferably 2.3, the wherein length of conical section is more than the stroke of tup.
First coil and the second coil can be controlled with a controller, and controller includes square-wave oscillator, the first electronic cutting
It closes, the second electronic switch, square-wave oscillator is alternately produced high level and low level by certain period, first when high level occurs
Electronic switch is powered for first coil, and the second electronic switch is powered for the second coil when low level occurs.
Claims (2)
1. a kind of electrically operated hammer comprising cricoid iron core（3）, first coil is installed in the recess portion of the upper ring surface of iron core（10）,
Guiding axis is inserted in iron core（8）, the both ends of guiding axis expose from iron core, and the top of guiding axis is connected with the first armature of plate-like
（1）, the bottom end of guiding axis connects tup（9）, characterized in that the second coil is installed in the recess portion of the lower anchor ring of iron core（5）,
The edge of anchor ring extends downwardly out a canister portion under iron core（6）, the inner wall of canister portion has certain taper, in the lower part of guiding axis
It is connected with the second armature（7）, the second armature is peviform, and the outer wall of the second armature is matched with the inner wall of canister portion.
2. a kind of electrically operated hammer according to claim 1, characterized in that the taper=（The diameter at butt end-of second armature
The top diameter of second armature）/（The length of conical section）, taper 2.3, the wherein length of conical section are more than the row of tup
Journey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459098.5A CN108381468A (en) | 2018-05-15 | 2018-05-15 | A kind of electrically operated hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459098.5A CN108381468A (en) | 2018-05-15 | 2018-05-15 | A kind of electrically operated hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108381468A true CN108381468A (en) | 2018-08-10 |
Family
ID=63070840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810459098.5A Withdrawn CN108381468A (en) | 2018-05-15 | 2018-05-15 | A kind of electrically operated hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108381468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524301A (en) * | 2021-07-26 | 2021-10-22 | 重庆凯丰医疗器械有限公司 | Non-woven fabrics automatic cutting device who pastes is treated in TDP moxibustion in special use |
-
2018
- 2018-05-15 CN CN201810459098.5A patent/CN108381468A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524301A (en) * | 2021-07-26 | 2021-10-22 | 重庆凯丰医疗器械有限公司 | Non-woven fabrics automatic cutting device who pastes is treated in TDP moxibustion in special use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180810 |