CN113600870B - Electric tool with protector - Google Patents
Electric tool with protector Download PDFInfo
- Publication number
- CN113600870B CN113600870B CN202111039528.6A CN202111039528A CN113600870B CN 113600870 B CN113600870 B CN 113600870B CN 202111039528 A CN202111039528 A CN 202111039528A CN 113600870 B CN113600870 B CN 113600870B
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- CN
- China
- Prior art keywords
- matched
- contact piece
- plate
- electromagnet
- limiting plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses an electric tool with a protecting device, which comprises a magnetic suction seat, a drill body, a main shaft and a sliding rail, wherein a detecting part matched with the main shaft and used for detecting the resistance of the main shaft during punching is arranged in the drill body, a detecting plate is arranged on the detecting part, a sliding rheostat matched with the detecting plate is arranged on the drill body, the sliding rheostat, an electromagnet in the magnetic suction seat and a power supply form a loop, and the sliding rheostat is used for adjusting the current passing through the electromagnet.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to an electric tool with a protection device.
Background
In the modern production manufacturing process, the electric tool is very widely used, and the variety of electric tool is also various, has electric hand drills, buffing machines, cutting machines, magnetism to inhale boring etc. wherein, magnetism is inhaled boring and is used for outdoor or high altitude operation usually, adsorbs the work piece through the electro-magnet on having ferromagnetic material and punches, and the position of punching is the hole on the vertical wall usually. The magnetic suction drill utilizes the electromagnet adsorption principle to adsorb the base on the workpiece, and normally, the electromagnet can seriously heat if continuously high-power high-current operation is performed at work, so that magnetism is reduced, the magnetic suction drill bit is enabled to have a falling risk after punching and workpiece abutting to generate interaction force, and meanwhile, the electromagnet continuously works, power consumption is larger, and energy is wasted.
Disclosure of Invention
The invention provides an electric tool with a protective device, which aims at the defects in the prior art.
In order to solve the technical problems, the invention is solved by the following technical scheme: an electric tool with a protection device comprises a magnetic suction seat, a drill body, a main shaft and a sliding rail.
In the above scheme, preferably, be equipped with in the brill body with main shaft matched with be used for detecting the main shaft resistance when punching detection portion, be equipped with the pick-up plate on the detection portion, be equipped with on the brill body with pick-up plate matched with slide rheostat, slide rheostat and magnet in the seat and power constitute the return circuit, slide rheostat is used for adjusting the electric current through the electro-magnet, its beneficial effect lies in: the device can adjust the current of the electromagnet to change the magnetic force of the electromagnet and further reduce the energy consumption of the magnetic suction drill, so that the magnetic suction drill can adjust the magnetic force according to different resistances when drilling.
In the above scheme, preferably, the detection portion includes pick-up plate and first spring, be equipped with on the pick-up plate with first spring matched with first boss, first spring one end cover is located on the first boss and is leaned on with the pick-up plate top, and the other end is leaned on with the top of boring the body casing, and its beneficial effect lies in: a specific structure of a detection part is provided, so that the detection part can detect the resistance of a drill bit when drilling.
In the above scheme, preferably, be equipped with on the pick-up plate with main shaft matched with first hole body, be equipped with on the main shaft with first hole body matched with second boss, its beneficial effect lies in: a specific rotation fit mode of the main shaft and the detection plate is provided, so that the detection plate can detect pressure when the main shaft rotates.
In the above scheme, preferably, the slide rheostat includes slide bar, resistance coil and slider, the slider slides and locates on the slider, be equipped with the contact patch that contacts with resistance coil on the slider, slide bar and resistance coil are fixed in on the both sides support, slide bar one end is equipped with first interface, resistance coil one end is equipped with the second interface, its beneficial effect lies in: the specific structure of the slide rheostat is provided, so that the slide rheostat has the function of specifically adjusting the resistor.
In the above scheme, preferably, be equipped with on the slider with pick-up plate matched with draw-in groove, the pick-up plate card is located in the draw-in groove, its beneficial effect lies in: a specific matching structure of the detection plate and the slide rheostat is provided, so that the detection plate can drive a sliding block on the slide rheostat to slide so as to adjust the resistance of current passing through the slide rheostat.
In the above scheme, preferably, be equipped with on the magnetic attraction seat with electromagnet matched with induction part, induction part includes response round pin, first limiting plate and second limiting plate, be equipped with in the magnetic attraction seat with response round pin matched with fixing base, be equipped with first cavity in the fixing base, response round pin one end links to each other with the second limiting plate, and the other end wears to establish the fixing base and is equipped with first limiting plate in first cavity, be equipped with in the first cavity with first limiting plate matched with second spring, its beneficial effect lies in: an induction part on a magnetic attraction seat is provided for inducing whether the magnetic attraction seat is completely attracted with a workpiece.
In the above scheme, preferably, be equipped with third contact piece and fourth contact piece on the fixing base, the second limiting plate is the current-conducting plate, the response round pin is insulating material, the second limiting plate links to each other with third contact piece and fourth contact piece after sliding, and its beneficial effect lies in: a second loop of the electromagnet is provided, the second limiting plate is connected with the third contact piece and the fourth contact piece after sliding, and current directly supplies power to the electromagnet through the second loop.
In the above scheme, preferably, the third contact piece and the fourth contact piece are respectively connected with the electromagnet, and the beneficial effects thereof are that: a circuit formed by the third contact piece, the fourth contact piece and the electromagnet is provided, so that current can be supplied to the electromagnet through the circuit.
The beneficial effects of the invention are as follows: the invention provides a device capable of detecting drilling resistance to change the suction force of a magnetic suction drill, further reducing the energy consumption of the magnetic suction drill, and preventing the magnetic suction drill from falling off after the magnetic suction drill receives external force, thereby greatly improving the safety of the magnetic suction drill and saving energy.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a schematic diagram of a sliding rheostat according to the present invention.
FIG. 3 is a schematic diagram of the structure of the sensing part of the present invention.
FIG. 4 is a schematic diagram of the structure of the detecting plate according to the present invention.
Description of the embodiments
The invention is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1-4, an electric tool with a protection device includes a magnetic attraction seat 1, a drill body 2, a spindle 3 and a sliding rail 4, wherein the sliding rail 4 is arranged on the magnetic attraction seat 1, the drill body 2 is arranged on the sliding rail 4, and the spindle 3 is slidably arranged in the drill body 2 and is connected with a driving motor through a gear set, which is the prior art.
The drill bit is characterized in that a bearing is arranged between the spindle 3 and the drill body 2, the spindle 3 can slide in the bearing, a drill chuck is arranged at one end of the spindle 3 outside the drill body 2, the other end of the spindle is arranged in the drill body 2, and a detection part matched with the spindle 3 is arranged on the inner wall of the right end of the drill body 2.
The main shaft 3 is arranged in the drill body 2 one end and is equipped with second boss 14, second boss 14 is the cylinder boss, be equipped with on the detection portion with second boss 14 matched with pick-up plate 5, pick-up plate 5 is close to main shaft 3 one side and is equipped with the first hole body 13 that can supply second boss 14 to wear to establish pivoted, pick-up plate 5 bulge right is provided with first boss 12, first hole body 13 locates in the first boss 12, be equipped with plane bearing between main shaft 3 and the pick-up plate 5, make pick-up plate 5 detectable main shaft 3 when rotating the axial resistance of punching feedback.
The first boss 12 is sleeved with a first spring 11, and two ends of the first spring 11 respectively lean against the detecting plate 5 and the inner wall of the right end of the drill body 2.
The arc downward extension of detection board 5 lower extreme is provided with joint board 101, joint board 101 card is located on slide block 23 of slide rheostat 6, slide rheostat 6 includes slide bar 21, resistance coil 22 and slider 23, slider 23 slides and locates on the slide bar 21, be equipped with on the slider 23 with joint board 101 matched with draw-in groove 28, joint board 101 links to each other with slider 23 through the round pin axle after the card is established with in the draw-in groove 28, set firmly the contact piece 24 that contacts with resistance coil 22 on the slider 23, contact piece 24 is the conducting strip.
The sliding rod 21 and the resistor coil 22 are arranged in parallel, two sides of the sliding rod are fixed through the support 25, the support 25 is fixedly arranged in the drill body 2, the right end of the sliding rod 21 is provided with a first interface 26, the right end of the resistor coil 22 is provided with a second interface 27, the sliding block 23 slides rightwards to reduce the resistance passing through the first interface 26 to the second interface 27, and the resistance is reversely increased, so that the principle is that the resistance is adjusted by the sliding rheostat, and the principle is the prior art.
The magnet holder 1 is internally provided with an electromagnet 7 capable of adsorbing tools, the electromagnet 7 is connected with a power supply through a cable, the electromagnet 7 is connected with the power supply through a cable, a first interface 26 and a second interface 27, namely, power supply current is transmitted to the electromagnet 7 after passing through the slide rheostat 6, when a sliding block 23 on the slide rheostat 6 slides rightwards, the resistance of the slide rheostat 6 is reduced, the current entering the electromagnet 7 is increased, and the electromagnet 7, the slide rheostat 6 and the power supply form a first loop.
The magnetic attraction seat 1 is provided with an induction part matched with the electromagnet 7, the induction part comprises an induction pin 31, the induction pin 31 is slidably arranged at the bottom of the magnetic attraction seat 1, a fixed seat 34 is arranged in the magnetic attraction seat 1, a first cavity 35 is arranged in the fixed seat 34, the fixed seat 34 is preferably plastic and is glued with the magnetic attraction seat 1, the fixed seat 34 is provided with a through hole for the induction pin 31 to penetrate, one end of the induction pin 31 is fixedly provided with a second limiting plate 33, the second limiting plate 33 is arranged outside the right end face of the fixed seat 34, the other end penetrates the fixed seat 34 to enable the end part of the induction pin 31 to be arranged outside the magnetic attraction seat 1, the middle part of the induction pin 31 is provided with a first limiting plate 32, and the first limiting plate 32 is arranged in the first cavity 35.
The first cavity 35 is internally provided with a second spring 36, the second spring 36 is sleeved on the sensing pin 31 between the first limiting plate 32 and the human limiting plate 33, and two ends of the second spring are respectively propped against the first limiting plate 32 and the bottom of the right cavity of the first cavity 35, namely, the left end of the sensing pin 31 is compressed and then can compress the second spring 36, so as to further drive the second limiting plate 33 to slide rightwards.
The third contact piece 41 and the fourth contact piece 42 are fixedly arranged on the right end face of the fixed seat 34, the third contact piece 41 and the fourth contact piece 42 are arranged between the second limiting plate 33 and the right end face of the fixed seat 34, the sensing pin 31 is preferably made of plastic, the second limiting plate 33 is a conductive plate, preferably a copper plate, the sensing pin 31 and the second limiting plate 33 are connected through screws, the third contact piece 41 and the fourth contact piece 42 are arranged on two sides of the sensing pin 31, and the two contact pieces are not connected, and when the second spring 36 is in a free stretching state, the second limiting plate 33 is respectively attached to the third contact piece 41 and the fourth contact piece 42.
The third contact piece 41 and the fourth contact piece 42 are connected with the electromagnet 7 and the power supply through cables, that is, when the second limiting plate 33 is respectively in contact with the third contact piece 41 and the fourth contact piece 42, the third contact piece 41, the fourth contact piece 42, the electromagnet 7 and the power supply form a second loop, that is, a circuit formed by the third contact piece 41, the fourth contact piece 42 and the second limiting plate 33 is arranged in parallel with the sliding rheostat 6, and when the second loop is communicated, the power supply current preferentially passes through the second loop because the resistance in the second loop is smaller than the resistance of the sliding rheostat 6, so that the current of the electromagnet 7 reaches the maximum, and the magnetic force is strongest.
A method of using a power tool having a guard as described above: when the magnetic chuck is used, the magnetic chuck is electrified, the induction pin 31 is freely stretched by the second spring 36 to be placed on the outer side of the magnetic chuck 1, the second limiting plate 33 is in contact with the third contact piece 41 and the fourth contact piece 42, the second loop is in an electrified state, the power supply current is preferentially supplied to the electromagnet 7 through the second loop, the electromagnet 7 is the maximum magnetic force, the magnetic chuck 1 is adsorbed on a workpiece, the induction pin 31 is pushed rightwards, the second loop is powered off, the power supply is supplied to the electromagnet 7 through the loop of the sliding rheostat 6, namely, the first loop is used for supplying power, the power of the electromagnet 7 is reduced, the energy consumption is saved, the spindle 3 rotates and punches, the spindle 3 is driven to compress the first spring 11 when being subjected to larger resistance, and simultaneously, the sliding block on the sliding rheostat 6 is driven to move rightwards, the resistance is reduced, the current passing through the first loop is increased, the magnetic force of the electromagnet 7 is enhanced, and the magnetic force of different electromagnets 7 is adapted under the condition of different resistances when the punching is adapted;
because the magnetic suction drill is complex in use condition, an external force is applied to the workpiece in the use process, when the external force is applied to the workpiece in a large impact manner, the magnetic suction seat 1 and the workpiece can generate an angle in the moment due to insufficient magnetic force, and at the moment, the induction pin 31 slides leftwards under the action of the tension of the second spring 36, so that the second limiting plate 33 is in contact with the third contact piece 41 and the fourth contact piece 42, the second loop is in an electrified state, the power supply current is supplied to the electromagnet 7 through the second loop, the electromagnet 7 is the maximum magnetic force, the tool is re-absorbed, the external force applied to the workpiece in the moment is relieved, and the magnetic suction drill is prevented from falling.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an electric tool with protector, includes that magnetism is inhaled seat (1), is bored body (2), main shaft (3) and slide rail (4), its characterized in that: the drill body (2) is internally provided with a detection part which is matched with the main shaft (3) and is used for detecting the resistance of the main shaft (3) during punching, the detection part is provided with a detection plate (5), the drill body (2) is provided with a slide rheostat (6) which is matched with the detection plate (5), the slide rheostat (6) forms a loop with an electromagnet (7) and a power supply in the magnetic seat (1), and the slide rheostat (6) is used for adjusting the current passing through the electromagnet (7);
the magnetic attraction seat (1) is provided with an induction part matched with the electromagnet (7), the induction part comprises an induction pin (31), a first limiting plate (32) and a second limiting plate (33), a fixed seat (34) matched with the induction pin (31) is arranged in the magnetic attraction seat (1), a first cavity (35) is arranged in the fixed seat (34), one end of the induction pin (31) is connected with the second limiting plate (33), the other end of the induction pin is penetrated through the fixed seat (34), the first cavity (35) is internally provided with the first limiting plate (32), and a second spring (36) matched with the first limiting plate (32) is arranged in the first cavity (35);
the fixed seat (34) is provided with a third contact piece (41) and a fourth contact piece (42), the second limiting plate (33) is a conductive plate, the induction pin (31) is made of an insulating material, and the second limiting plate (33) is connected with the third contact piece (41) and the fourth contact piece (42) after sliding;
the third contact piece (41) and the fourth contact piece (42) are respectively connected with the electromagnet (7).
2. The power tool with guard of claim 1, wherein: the detection part comprises a detection plate (5) and a first spring (11), a first boss (12) matched with the first spring (11) is arranged on the detection plate (5), one end of the first spring (11) is sleeved on the first boss (12) and abuts against the detection plate (5), and the other end of the first spring abuts against the shell of the drill body (2).
3. The power tool with guard of claim 1, wherein: the detection plate (5) is provided with a first hole body (13) matched with the main shaft (3), and the main shaft (3) is provided with a second boss (14) matched with the first hole body (13).
4. The power tool with guard of claim 1, wherein: slide rheostat (6) are including slide bar (21), resistance coil (22) and slider (23), slider (23) slip is located on slider (21), be equipped with on slider (23) with resistance coil (22) contact piece (24), slide bar (21) and resistance coil (22) are fixed in on both sides support (25), slide bar (21) one end is equipped with first interface (26), resistance coil (22) one end is equipped with second interface (27).
5. The power tool with guard of claim 4, wherein: the slide block (23) is provided with a clamping groove (28) matched with the detection plate (5), and the detection plate (5) is clamped in the clamping groove (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111039528.6A CN113600870B (en) | 2021-09-06 | 2021-09-06 | Electric tool with protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111039528.6A CN113600870B (en) | 2021-09-06 | 2021-09-06 | Electric tool with protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113600870A CN113600870A (en) | 2021-11-05 |
| CN113600870B true CN113600870B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111039528.6A Active CN113600870B (en) | 2021-09-06 | 2021-09-06 | Electric tool with protector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113927544B (en) * | 2021-11-09 | 2023-03-24 | 浙江精力工具有限公司 | High stability electron dropout electric hammer |
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| CN113600870A (en) | 2021-11-05 |
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