CN104260032B - A kind of improved electric screwdriver - Google Patents
A kind of improved electric screwdriver Download PDFInfo
- Publication number
- CN104260032B CN104260032B CN201410330655.5A CN201410330655A CN104260032B CN 104260032 B CN104260032 B CN 104260032B CN 201410330655 A CN201410330655 A CN 201410330655A CN 104260032 B CN104260032 B CN 104260032B
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- housing
- gearbox body
- electric screwdriver
- temperature
- back cabinet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/18—Devices for illuminating the head of the screw or the nut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention belongs to electric tool technical field, relate to a kind of improved electric screwdriver.This improved electric screwdriver includes back cabinet and is hingedly connected to the front housing of back cabinet front end, mmi machine shell front end is provided with the transmission housing that Al-Si-Cu-based Cast aluminium alloy gold prepares, Al-Si-Cu-based Cast aluminium alloy gold is grouped into by the one-tenth of following mass percent: Si:11.0 13.0%, Cu:1.3 2.5%, Mg≤0.3%, Mn :≤0.5%, Fe:0.8 1.0%, Zn :≤0.5%, Sn:0.2 0.5%, Ni:0.02 0.08%, Pb≤0.20%, Ti:0.12 0.16%, and surplus is aluminum；Power supply, activate switch and light fixture are installed in back cabinet, in the confined space that mmi machine shell and transmission housing are formed, transmission assembly, motor are installed.Electric screw driver stable performance of the present invention, motility is big and hardness is big.
Description
Technical field
The invention belongs to electric tool technical field, relate to a kind of improved electric screwdriver.
Background technology
Electric screw driver is the electric tool for tightening and unscrew screw (screw),
Being mainly used in assembly line, it can force screw in place or make screw depart from frock position,
It it is one of indispensable instrument of major part manufacturing enterprise.Electric screw driver is also that electrical maintenance is made
Instrument commonly used during industry, owing to screw has various style, such as flat mouth screw, cross
Mouth screws etc., electric screw driver can assemble the screwdriver bit of various style, different to coordinate
Screw uses.
In prior art, most electric screwdriver structure design comparison is simple, volume
Relatively big, internal structure is fixing the most firm, and internal in the course of the work easily occur rocking,
Affect work efficiency, and existing electric screw driver typically cannot be in narrow space environment
Operation, uses and inconvenient.
In sum, for solving the deficiency on existing electric screwdriver structure, design is needed
A kind of volume is little, compact conformation, improved electric screwdriver easy to use.
Summary of the invention
It is an object of the invention to there are the problems referred to above for existing technology, it is proposed that a kind of
Volume is little, compact conformation, improved electric screwdriver easy to use.
The purpose of the present invention can be realized by following technical proposal: a kind of improved electric
Screwdriver, including back cabinet and before being hingedly connected to back cabinet front end by rotary shaft
Casing, described front housing is fastened by the first housing and the second housing and is formed and before mmi machine shell
End is provided with the transmission housing that Al-Si-Cu-based Cast aluminium alloy gold prepares, before described transmission housing
Holding threaded moment set, described back cabinet is fastened shape by the 3rd housing and the 4th housing
Becoming, described Al-Si-Cu-based Cast aluminium alloy gold is grouped into by the one-tenth of following mass percent: Si:
11.00%-13.00%, Cu:1.30%-2.50%, Mg≤0.30%, Mn :≤0.50%,
Fe:0.80%-1.00%, Zn :≤0.50%, Sn:0.20%-0.50%, Ni:0.02%-0.08%,
Pb≤0.20%, Ti:0.12%-0.16%, in other impurity elements, individual event impurity element contains
Amount≤0.03%, impurity element total content≤0.1%, surplus is aluminum；Described rotary shaft is successively
Through the 3rd housing, the first housing, the second housing, the 4th housing, described rotary shaft one
End is provided with leaning seat, and the other end is fixed with rotary knob and between rotary knob and leaning seat
It is provided with rotating shaft spring, power supply, activate switch and illumination group are installed in back cabinet
Part, described activate switch is embedded in the middle part of back cabinet, embedding on the outer surface of the 3rd housing
Being provided with on electric quantity display plate and electric quantity display plate and be covered with electricity display lid, described electricity shows
Show that plate electrically connects and formed closed-loop path with power supply, described light fixture include illuminating lamp,
Luminous lamp switch and the illuminating lamp button being connected with luminous lamp switch, described illuminating lamp is embedding
It is located on the outer surface of the 3rd housing and is covered with on illuminating lamp lampshade, described illuminating lamp,
Luminous lamp switch, power supply electrically connect and are formed closed-loop path, mmi machine shell and transmission housing
Transmission assembly is installed in the confined space formed, there is the motor of motor output shaft,
Described transmission assembly is arranged between transmission housing and motor, in the appearance of the 4th housing
Relay indicating light, described motor, activate switch, relay indicating light, electricity it is embedded with on face
Source electrically connects and is formed closed-loop path, and described motor is installed in front housing by motor sheath
In, the end of described motor output shaft is fixed with motor gear, described transmission assembly bag
Include power transmission shaft, primary planet carrier, self-locking centre frame, ring gear, described primary planet carrier
On be inserted with three primary planet pinions being uniformly distributed circumferentially, described self-locking centre frame
On be inserted with three secondary planetary gears being uniformly distributed circumferentially, described ring gear is simultaneously
Engage with the outer peripheral face of three primary planet pinions, three secondary planetary gears and be connected, institute
The inner peripheral surface engagement stating motor gear and three primary planet pinions connects, described power transmission shaft
Being located in front housing, described power transmission shaft one end has screwdriver bit installing hole and stretches out moment set
Outward, the other end is connected with self-locking centre frame by self-locking ring, described power transmission shaft, one-level row
Carrier, self-locking centre frame, motor output shaft are coaxially disposed.
In the Al-Si-Cu-based casting alloy used by transmission housing, Zn, Mg, Cu are at Al
In solid solubility big, next to that Mn, Si, Ti, and the solid solubility of Fe is the least, so
In the aluminium alloy used by gearbox body of the present invention, Zn, Mg, Cu can be as heat at
Reason intensified element.Si forms binary or multi-element eutectic tissue in the alloy, improves alloy
Casting character, improve mobility, reduce hot cracking tendency, less shrinkage porosite, improve gas
Close property, makes the gearbox body dense structure prepared.And silicon content is more than Al-Si eutectic point,
The granule of silicon can significantly improve the wearability of alloy.When silicone content is 11.00-13.00%,
Add the elements such as a certain amount of Ni, Cu, Mg and can produce good synergism improvement
The comprehensive mechanical property of its transmission housing, and make its lighter weight.Copper can improve casting aluminum
The room temperature of alloy and high-temperature behavior, the thermally treated strengthening of Mg and Si forms Mg2Si precipitation
Phase.When Fe content is relatively low, Mg with Si still forms Mg2Si phase；When the amount containing Fe increases
Added-time, Al-Fe-Si-Mg compound can be formed, the illeffects of Fe phase can be suppressed, from
And reduce the harm of Fe, it is effectively improved the performance of alloy.When Mg with Cu is used in combination
Time, can further improve the thermostability of alloy.And the existence of Zn can improve the dissolving of Cu
Speed and dissolubility, put forward heavy alloyed plasticity.Additionally, when the content of copper exists
In the range of 1.30%-2.50%, can also a small amount of eutectic (α+CuAl2) in alloy
Presented in, improve the mobility of aluminium alloy.Owing to the content of copper is higher, therefore permit
Permitted to properly increase the preferable Zn content of mobility.And Fe can be formed thick in aluminium alloy
Low-alloyed mechanical performance, drops in needle-like or the compound of lamellar, but in press casting procedure,
In order to reduce the aluminium alloy adhesion to mould, Al-Si-Cu-based alloy is preferably present a certain amount of
Ferrum element.For reducing the adverse effect of ferrum, the manganese unit within a small amount of 0.5% can be added
Element neutralizes with ferrum, and from lamellar or needle-like, the crystal shape of ferrum in alloy is become fine and closely woven crystalline substance
Shape, forms the circular or Al-Si-Fe-Mn phase of Chinese character shape, reduces harmful work of Fe
With, put forward heavy alloyed creep rupture strength and hardness.
The present invention is also added with a small amount of antimony element as alterant element to improve the gold of aluminium alloy
Phase constitution, Ti forms tiny compound in this aluminium alloy, as the knot of aluminum solid solution
The nucleus heart, has the strong effect refining aluminum solid solution crystal grain.Due to the refinement of aluminum solid solution,
Make crystal boundary and interdendritic compound refine the most therewith, thus put forward heavy alloyed heat treatment effect
Fruit and the mechanical performance of alloy.
Aluminium alloy used by gearbox body of the present invention adds on the basis of ADC12 alloy
Ti, Pb element, improves the content of Si, Cu element, and further define Fe,
The content of Ni, Sn element so that it is there is excellent fillibility and high intensity so that it is should
Being used on electric screw driver, stable performance, hardness is big, and then improves electric screw driver
Practicality and service life.
Wherein, the processing technique of described gearbox body comprises the steps:
S1, according to the constituent of above-mentioned gearbox body Al-Si-Cu-based alloy and quality hundred thereof
Proportion by subtraction dispensing, is initially charged the aluminium ingot of half, adds copper, manganese and remain after aluminium ingot is completely melt
Remaining aluminium ingot, adjusts temperature of aluminum liquid after copper and manganese are completely melt and is pressed into when 710-740 DEG C
Magnesium sheet, stirs the aluminum liquid after melting；
S2, successively carry out removing the gred and refinery by de-gassing, simultaneously by mould by the filtrate after melting
First preheating, then aluminum hydraulic pressure is cast gearbox body blank, cast temperature is
620-670 DEG C, injection pressure is 60-80MPa, and mold temperature is 550-600 DEG C, die sinking
Time is 150-230s；
S3, to cast after gearbox body blank carry out heat treatment, heat treatment includes solid solution
Processing and Ageing Treatment, wherein solid solution temperature is 500-550 DEG C, is incubated 3-8 hour
After carry out Quenching Treatment immediately, artificial aging treatment temperature is 150-200 DEG C, be incubated 5-12
After hour, natural cooling obtains gearbox body.
The purpose of the solution treatment described in step S3 solution modeling phase, shape the most again
The Ageing Treatment becoming supersaturated solid solution to be alloy is prepared.And affect the main of solution treatment
Because have heating-up temperature, temperature retention time and rate of cooling.Heating-up temperature is the highest, temperature retention time
The longest, alloying element distribution in lattice is the most uniform, can promote the raising of timeliness effect.
And Ageing Treatment is the process of an age-hardening, its essence is that Segregation solute atom is formed firmly
Change the result in district.Aluminium alloy forms room after Quench heating, in quenching process, due to
The excessive velocities of cooling makes these rooms have little time removal and be combined in one with solute atoms
Rise.And the existence in room and supersaturated solid solution from labile state to the transformation of poised state
Accelerate the diffusion velocity of solute atoms, thus accelerate the segregation of solute atoms.And timeliness
Hardening is an extremely complex process, and it depends not only on the composition of alloy when additionally depending on
Temperature during effect and temperature retention time.
In the processing technique of above-mentioned gearbox body, the smelting temperature described in step S1 is
700-760℃。
In the processing technique of above-mentioned gearbox body, the refining temperature described in step S2 is
720-760℃.Refining agent used is hexachlorethane.
In the processing technique of above-mentioned gearbox body, the extrusion process described in step S2 is adopted
With intermediate annealing, i.e. after injection 1000-3000 time, anneal；After injection 5000 times,
Anneal again；Again after injection 10000 times, anneal again；Injection 20000-30000 again
Secondary, annealing process is 520-550 DEG C, and anneal 5h.Die Casting process at gearbox body
In, mould is not only under high temperature, and variations in temperature is big, uses intermediate annealing work simultaneously
Skill, can eliminate internal stress, stablizes the size of molding gearbox body.
In the processing technique of above-mentioned gearbox body, the water of Quenching Treatment described in step S3
Temperature is 60-70 DEG C.
Wherein, described copper and magnesium are to add with simple metal.
In above-mentioned a kind of improved electric screwdriver, described first housing, the second shell
Body, the 3rd housing, the 4th housing lateral surface on all offer some be obliquely installed logical
Air holes.
In above-mentioned a kind of improved electric screwdriver, on the outer surface of back cabinet all
Even it is coated with fluorescence coating.
In above-mentioned a kind of improved electric screwdriver, described first housing, the second shell
Body, the 3rd housing, the 4th housing outer surface on be provided with some anti-skidding projections.
Compared with prior art, integral structure layout of the present invention is reasonable, and volume is little；Internal
Each parts are installed compact, fixed so that electric screw driver is in the course of the work
Inside is difficult to be occurred rocking, it is ensured that work efficiency；The aluminium alloy that gearbox body uses closes
Reason compatibility so that it is there is excellent fillibility and high intensity so that it is apply at electronic spiral shell
On silk cutter, stable performance, hardness is big, and then improves the practicality of electric screw driver and make
Use the life-span；And back cabinet and front housing are articulated and connected, can rotate upwardly and downwardly according to different demands
Back cabinet and front housing, to meet the demand of different work environment, motility is big and general
Property wide, use the most more convenient；The structure design of illuminating lamp and luminous lamp switch
Simply, light can be provided under relatively dim environment for operator, convenient and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structure after front housing separates with back cabinet in a preferred embodiment of the present invention
Schematic diagram.
Fig. 3 is the explosive view of a preferred embodiment of the present invention.
Fig. 4 is the structural representation of back cabinet in a preferred embodiment of the present invention.
Fig. 5 is the structural representation of front housing in a preferred embodiment of the present invention.
Fig. 6 is the structural representation of transmission housing in a preferred embodiment of the present invention.
Fig. 7 is the structural representation of light fixture in a preferred embodiment of the present invention.
Fig. 8 is the structural representation of transmission assembly in a preferred embodiment of the present invention.
In figure, 10, back cabinet；11, the 3rd housing；12, the 4th housing；21, rotation
Rotating shaft；211, leaning seat；22, rotary knob；23, rotating shaft spring；30, front housing；
31, the first housing；32, the second housing；33, anti-skidding projection；41, transmission housing；
42, transmission assembly；421, power transmission shaft；422, primary planet carrier；423, in self-locking
Heart frame；424, ring gear；425, primary planet pinion；426, secondary planetary gear；
427, self-locking ring；50, moment set；60, power supply；71, activate switch；72, work
Display lamp；80, light fixture；81, illuminating lamp；82, luminous lamp switch；83, shine
Bright lamp button；84, lampshade；91, electric quantity display plate；92, electricity display lid；101、
Motor；1011, motor gear；102, motor sheath.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
As shown in Figures 1 to 8, this improved electric screwdriver include back cabinet 10 and
The front housing 30 of back cabinet 10 front end, front housing 30 it is hingedly connected to by rotary shaft 21
Fastened by the first housing 31 and the second housing 32 and formed and mmi machine shell 30 front end is provided with
Transmission housing 41, transmission housing 41 nose threads connects moment set 50, back cabinet 10
Being fastened formed by the 3rd housing 11 and the 4th housing 12, rotary shaft 21 sequentially passes through the 3rd
Housing the 11, first housing the 31, second housing the 32, the 4th housing 12, rotary shaft 21
One end is provided with leaning seat 211, and the other end is fixed with rotary knob 22 and rotary knob 22
And it is provided with rotating shaft spring 23 between leaning seat 211, in back cabinet 10, electricity is installed
Source 60, activate switch 71 and light fixture 80, activate switch 71 is embedded at back cabinet
In the middle part of in the of 10, the outer surface of the 3rd housing 11 is embedded with electric quantity display plate 91 and electricity
Electricity display lid 92, electric quantity display plate 91 and power supply 60 electricity it is covered with on display panel 91
Connecting and formed closed-loop path, light fixture 80 includes illuminating lamp 81, luminous lamp switch
82 and the illuminating lamp button 83 that is connected with luminous lamp switch 82, illuminating lamp 81 is embedded
Lampshade 84 it is covered with on the outer surface of the 3rd housing 11 and on illuminating lamp 81, illuminating lamp 81,
Luminous lamp switch 82, power supply 60 electrically connect and are formed closed-loop path, mmi machine shell 30 with
In the confined space that transmission housing 41 is formed, transmission assembly 42 is installed, there is motor
The motor 101 of output shaft, transmission assembly 42 is arranged on transmission housing 41 and motor 101
Between, the outer surface of the 4th housing 12 is embedded with relay indicating light 72, motor 101,
Activate switch 71, relay indicating light 72, power supply 60 electrically connect and form closed-loop path,
Motor 101 is installed in front housing 30 by motor sheath 102, the end of motor output shaft
End is fixed with motor gear 1011, and transmission assembly 42 includes power transmission shaft 421, one-level row
Carrier 422, self-locking centre frame 423, ring gear 424, primary planet carrier 422 plugs
There are three primary planet pinions being uniformly distributed circumferentially 425, on self-locking centre frame 423
Being inserted with three secondary planetary gears being uniformly distributed circumferentially 426, ring gear 424 is same
The outer peripheral face of 425, three secondary planetary gears 426 of Shi Yusan primary planet pinion is nibbled
Closing and connect, motor gear 1011 engages with the inner peripheral surface of three primary planet pinions 425 even
Connecing, power transmission shaft 421 is located in front housing 30, and power transmission shaft 421 one end has screwdriver bit peace
Filling hole and stretch out outside moment set 50, the other end is by self-locking ring 427 and self-locking centre frame
423 are connected, power transmission shaft 421, primary planet carrier 422, self-locking centre frame 423, motor
Output shaft is coaxially disposed.
It is noted that motor 101 is played the work that clamping is firm by motor sheath 102
With so that electric screw driver stable working, improve the work efficiency of equipment and use the longevity
Life.
In an initial condition, integral structure layout is reasonable, body for this improved electric screwdriver
Long-pending little；Each parts internal are installed compact, fixed so that electric screw driver exists
In work process, rocking occurs in internal being difficult to, it is ensured that work efficiency；And back cabinet 10
It is articulated and connected with front housing 30, back cabinet 10 and front can be rotated upwardly and downwardly according to different demands
Casing 30 so that the angle between back cabinet 10 and front housing 30 produces change, with full
The demand of foot different work environment, motility is big and versatility wide, uses and also compares
Convenient.
Rotary shaft 21, rotary knob 22 and rotating shaft spring 23 constitute rotary components,
Front housing 30 and back cabinet 10 are articulated and connected closely.Needs regulate front housing 30,
(need to rotate front housing 30 to meet different work during angle between back cabinet 10
During environmental demand), rotary knob 22 can be rotated and then axle 21 is rotated rotates,
Achieve relatively rotating between front housing 30 and back cabinet 10 eventually so that this electronic spiral shell
Silk cutter can present difform change, easy to use.Wherein, rotary shaft 21 one end
It is provided with leaning seat 211 and between rotary knob 22 and leaning seat 211, is provided with rotating shaft spring
23, the two ends of rotating shaft spring 23 apply extrapolation to rotary shaft 21, leaning seat 211 simultaneously
Power so that rotary shaft 21, leaning seat 211 are unlikely to stuck so that front housing 30, after
Casing 10 rotates more flexible, reasonable in design and install, dismounting the most more convenient.
In the present invention, it is internal that power supply 60 is built in back cabinet 10, and back cabinet 10 serves
Storing and storage line function, it is to avoid outside lines are the most random, giving works at a distance offers convenience.
Wherein, the using method of activate switch 71 is: machine after user palm is held
During shell 10, finger pins activate switch 71 simultaneously so that home loop turns on, this electricity
Dynamic screwdriver is started working, reasonable in design and simple to operate.Additionally, electric quantity display plate 91
Be connected with power supply 60, power supply 60 electricity can be shown in time, it is simple to user observe and and
Time to electric screw driver charge, and be covered with on electric quantity display plate 91 play protection, prevent
The electricity display lid 92 of dirt effect, reasonable in design and easy for installation.
Illuminating lamp 81 is reasonable in design, can provide light for operator under relatively dim environment
Bright, convenient and practical.Additionally, illuminating lamp 81 matches with illuminating lamp button 83, needing
Only need to press illuminating lamp button 83 time to be used and can light illuminating lamp 81, at illuminating lamp
Also being covered with the lampshade 84 playing protection, decoration function on 81, lampshade 84 can also set
It is calculated as carrying the coloured transparent body so that the light that illuminating lamp 81 irradiates can present suitable
Close working environment or the color of protection eyes.
In the present invention, transmission assembly 42 includes two groups of speed change assemblies, reasonable in design, each
Parts layout is tight, and transmission assembly 42 can realize multi-change speed, and work efficiency is high.
Under original state, the screwdriver bit of screwdriver is contained in screwdriver bit installing hole, simple in construction and frock
Convenient.The driving force of motor 101 is sent to power transmission shaft 421 by transmission assembly 42
On, in work process, motor 101 synchronizes to drive power transmission shaft 421 to rotate, and then rotates
Axle drives screwdriver bit work so that electric screw driver realizes forcing that screw is in place, makes screw take off
From functions such as frock positions.
Relay indicating light 72 plays indicative function at work, makees at electric screw driver
During industry, the duty of operator's electric screw driver can be pointed out, facilitate operator and enter
Row operation, improves work efficiency.
Preferably, first housing the 31, second housing the 32, the 3rd housing the 11, the 4th shell
Multiple air vent being obliquely installed all is offered on the lateral surface of body 12.In the present invention, logical
The sites of heat generation when Position Design of air holes works generally proximate to electric screw driver, air vent makes
The heat that distributes of inner body can be diffused into the external world in time, it is to avoid motor 101 or
Transmission assembly 42 is overheated and burns the generation of phenomenon.
Further, first housing the 31, second housing 32, the 3rd housing 11,
Multiple anti-skidding protruding 33 it are provided with on the outer surface of four housings 12.In the present invention, anti-
Sliding protruding 33 can be chosen as strip projected parts or point-like projection, and anti-skidding protruding 33 increase
The intensity of front housing 30 (back cabinet 10) and comfort, at this electric screw driver
During work, the feel held is more comfortable and assurance is more firm, reasonable in design, improves
Work efficiency and the service life of electric screw driver.
Further, the outer surface of back cabinet 10 is uniformly coated with fluorescence coating, disconnected
In the case of electricity or dark it can also be seen that the position at this electric screw driver place,
Simple in construction and easy to process, it is to avoid user is stumbled the things such as electric screw driver generation scratch
Part.
Wherein, described transmission housing is prepared by Al-Si-Cu-based Cast aluminium alloy gold, described aluminum silicon
Copper system Cast aluminium alloy gold is grouped into by the one-tenth of following mass percent: Si:
11.00%-13.00%, Cu:1.30%-2.50%, Mg≤0.30%, Mn :≤0.50%,
Fe:0.80%-1.00%, Zn :≤0.50%, Sn:0.20%-0.50%, Ni:0.02%-0.08%,
Pb≤0.20%, Ti:0.12%-0.16%, in other impurity elements, individual event impurity element contains
Amount≤0.03%, impurity element total content≤0.1%, surplus is aluminum.
Table 1: embodiment 1-3 is for preparing constituent and the mass percent thereof of transmission housing
Embodiment 1
According to gearbox body Al-Si-Cu-based alloy described in table 1 embodiment 1 constituent and
Its mass percent dispensing, is initially charged the aluminium ingot of half, treats that aluminium ingot is the most molten at 700 DEG C
Add copper, manganese and remaining aluminium ingot after change, after copper and manganese are completely melt, adjust temperature of aluminum liquid
To being pressed into magnesium sheet when 710 DEG C, the aluminum liquid after melting is stirred；
Successively carrying out removing the gred and refinery by de-gassing by the filtrate after melting, refining temperature is
720 DEG C, refining agent is hexachlorethane, is first preheated by mould simultaneously, then by aluminum hydraulic pressure
Casting gearbox body blank, cast temperature is 620 DEG C, and injection pressure is 60MPa, mould
Temperature is 550 DEG C, and open time is 150s；Wherein extrusion process uses intermediate annealing, i.e.
After injection 1000 times, anneal；After injection 5000 times, then anneal；Injection again
After 10000 times, anneal again, then injection 20000 times；Annealing process is 520 DEG C,
Annealing 5h；
To cast after gearbox body blank carry out heat treatment, heat treatment include solution treatment and
Ageing Treatment, wherein solid solution temperature is 520 DEG C, quenches immediately after being incubated 6 hours
Fire processes, and quenching water temperature is 60 DEG C, and artificial aging treatment temperature is 170 DEG C, is incubated 5
After hour, natural cooling obtains gearbox body finished product.
Embodiment 2
According to gearbox body Al-Si-Cu-based alloy described in table 1 embodiment 2 constituent and
Its mass percent dispensing, is initially charged the aluminium ingot of half, treats that aluminium ingot is the most molten at 730 DEG C
Add copper, manganese and remaining aluminium ingot after change, after copper and manganese are completely melt, adjust temperature of aluminum liquid
To being pressed into magnesium sheet when 725 DEG C, the aluminum liquid after melting is stirred；
Successively carrying out removing the gred and refinery by de-gassing by the filtrate after melting, refining temperature is
740 DEG C, refining agent is hexachlorethane, is first preheated by mould simultaneously, then by aluminum hydraulic pressure
Casting gearbox body blank, cast temperature is 640 DEG C, and injection pressure is 70MPa, mould
Temperature is 575 DEG C, and open time is 190s；Wherein extrusion process uses intermediate annealing, i.e.
After injection 2000 times, anneal；After injection 5000 times, then anneal；Injection again
After 10000 times, anneal again, then injection 25000 times；Annealing process is 535 DEG C,
Annealing 5h；
To cast after gearbox body blank carry out heat treatment, heat treatment include solution treatment and
Ageing Treatment, wherein solid solution temperature is 500 DEG C, quenches immediately after being incubated 4 hours
Fire processes, and quenching water temperature is 65 DEG C, and aging temperature is 150 DEG C, is incubated 10 hours
Rear natural cooling obtains gearbox body finished product.
Embodiment 3
According to gearbox body Al-Si-Cu-based alloy described in table 1 embodiment 3 constituent and
Its mass percent dispensing, is initially charged the aluminium ingot of half, treats that aluminium ingot is the most molten at 760 DEG C
Add copper, manganese and remaining aluminium ingot after change, after copper and manganese are completely melt, adjust temperature of aluminum liquid
To being pressed into magnesium sheet when 740 DEG C, the aluminum liquid after melting is stirred；
Successively carrying out removing the gred and refinery by de-gassing by the filtrate after melting, refining temperature is
760 DEG C, refining agent is hexachlorethane, is first preheated by mould simultaneously, then by aluminum hydraulic pressure
Casting gearbox body blank, cast temperature is 670 DEG C, and injection pressure is 80MPa, mould
Temperature is 600 DEG C, and open time is 230s；Wherein extrusion process uses intermediate annealing, i.e.
After injection 3000 times, anneal；After injection 5000 times, then anneal；Injection again
After 10000 times, anneal again, then injection 30000 times；Annealing process is 550 DEG C,
Annealing 5h；
To cast after gearbox body blank carry out heat treatment, heat treatment include solution treatment and
Ageing Treatment, wherein solid solution temperature is 550 DEG C, quenches immediately after being incubated 8 hours
Fire processes, and quenching water temperature is 70 DEG C, and aging temperature is 200 DEG C, is incubated 12 hours
Rear natural cooling obtains gearbox body finished product.
The gearbox body Progressive symmetric erythrokeratodermia the most at a room temperature and a high temperature that will prepare in embodiment 1-3
Can test, test result is as shown in table 2.
Table 2: the performance test results of the gearbox body that embodiment of the present invention 1-3 prepares
In sum, the gearbox body in electric screw driver of the present invention select containing multiple can
The Al-Si-Cu-based alloy of the element improving alloy fillibility and mechanical property is made,
With the addition of Ti, Pb element on the basis of ADC12 alloy, improve Si, Cu element
Content, and further define the content of Fe, Ni, Sn element, make gearbox body have
There are excellent fillibility and high intensity, significantly improve the performance of each side, make speed change
Casing is applied on electric screw driver, stable performance, and hardness is big, and then improves electronic spiral shell
The practicality of silk cutter and service life.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Claims (9)
1. an improved electric screwdriver, it is characterised in that include back cabinet and lead to
Crossing rotary shaft and be hingedly connected to the front housing of back cabinet front end, described front housing is by the first shell
Body and the second housing fasten formation and mmi machine shell front end is provided with Al-Si-Cu-based Cast aluminium alloy
The transmission housing that gold prepares, described transmission housing nose threads connects moment set, described
Back cabinet is fastened by the 3rd housing and the 4th housing and is formed, described Al-Si-Cu-based Cast aluminium alloy
Gold is grouped into by the one-tenth of following mass percent: Si:11.00%-13.00%, Cu:
1.30%-2.50%, Mg≤0.30%, Mn :≤0.50%, Fe:0.80%-1.00%, Zn:
≤ 0.50%, Sn:0.20%-0.50%, Ni:0.02%-0.08%, Pb≤0.20%, Ti:
0.12%-0.16%, individual event impurity content≤0.03%, impurity in other impurity elements
Element total content≤0.1%, surplus is aluminum；Described rotary shaft sequentially pass through the 3rd housing,
First housing, the second housing, the 4th housing, described rotary shaft one end is provided with leaning seat,
The other end is fixed with rotary knob and is provided with rotating shaft bullet between rotary knob and leaning seat
Spring, is provided with power supply, activate switch and light fixture, described startup in back cabinet
Switch is embedded in the middle part of back cabinet, is embedded with electricity and shows on the outer surface of the 3rd housing
Electricity display lid, described electric quantity display plate and power supply electricity it is covered with on plate and electric quantity display plate
Connect and formed closed-loop path, described light fixture include illuminating lamp, luminous lamp switch with
And the illuminating lamp button being connected with luminous lamp switch, described illuminating lamp is embedded at the 3rd housing
Outer surface on and illuminating lamp on be covered with lampshade, described illuminating lamp, luminous lamp switch,
Power supply electrically connects and is formed closed-loop path, the confined air that mmi machine shell is formed with transmission housing
In transmission assembly is installed, there is the motor of motor output shaft, described change speed gear box is total
Become to be arranged between transmission housing and motor, the outer surface of the 4th housing is embedded with work
Make display lamp, the electrical connection of described motor, activate switch, relay indicating light, power supply shape
Becoming closed-loop path, described motor is installed in front housing by motor sheath, described motor
Output the tip of the axis be fixed with motor gear, described transmission assembly include power transmission shaft, one
Level planet carrier, self-locking centre frame, ring gear, described primary planet carrier is inserted with three
The primary planet pinion being uniformly distributed circumferentially, described self-locking centre frame is inserted with three
The secondary planetary gear being uniformly distributed circumferentially, with three one-level row while of described ring gear
Star gear, three secondary planetary gears outer peripheral face engagement connect, described motor gear with
The inner peripheral surface engagement of three primary planet pinions connects, and described power transmission shaft is located in front housing
In, described power transmission shaft one end has screwdriver bit installing hole and stretches out outside moment set, and the other end leads to
Cross self-locking ring to be connected with self-locking centre frame, in described power transmission shaft, primary planet carrier, self-locking
Heart frame, motor output shaft are coaxially disposed.
A kind of improved electric screwdriver the most according to claim 1, its feature exists
In, the processing technique of described gearbox body comprises the steps:
S1, constituent according to gearbox body Al-Si-Cu-based alloy described in claim 1
And mass percent dispensing, it is initially charged the aluminium ingot of half, adds after aluminium ingot is completely melt
Copper, manganese and remaining aluminium ingot, adjust temperature of aluminum liquid extremely after copper and manganese are completely melt
It is pressed into magnesium sheet when 710-740 DEG C, the aluminum liquid after melting is stirred；
S2, successively carry out removing the gred and refinery by de-gassing by the filtrate after melting, first by mould simultaneously
Preheating, then aluminum hydraulic pressure is cast gearbox body blank, cast temperature is 620-670 DEG C,
Injection pressure is 60-80MPa, and mold temperature is 550-600 DEG C, and open time is
150-230s；
S3, to cast after gearbox body blank carry out heat treatment, heat treatment includes at solid solution
Reason and Ageing Treatment, wherein solid solution temperature is 500-550 DEG C, after being incubated 3-8 hour
Carrying out Quenching Treatment immediately, artificial aging treatment temperature is 150-200 DEG C, and 5-12 is little in insulation
Time after, natural cooling obtains gearbox body.
A kind of improved electric screwdriver the most according to claim 2, its feature exists
In, the smelting temperature described in processing technique step S1 of gearbox body is 700-760 DEG C.
A kind of improved electric screwdriver the most according to claim 2, its feature exists
In, the refining temperature described in processing technique step S2 of gearbox body is 720-760 DEG C.
A kind of improved electric screwdriver the most according to claim 2, its feature exists
In, the extrusion process described in processing technique step S2 of gearbox body uses intermediate annealing,
I.e. after injection 1000-3000 time, anneal；After injection 5000 times, then anneal；
Again after injection 10000 times, anneal again；Injection 20000-30000 time again, lehr attendant
Skill is 520-550 DEG C, and anneal 5h.
A kind of improved electric screwdriver the most according to claim 2, its feature exists
In, described in processing technique step S3 of gearbox body, the water temperature of Quenching Treatment is
60-70℃。
A kind of improved electric screwdriver the most according to claim 1, its feature exists
In, described first housing, the second housing, the 3rd housing, the 4th housing lateral surface on
All offer some air vents being obliquely installed.
A kind of improved electric screwdriver the most according to claim 7, its feature exists
In, the outer surface of back cabinet is uniformly coated with fluorescence coating.
A kind of improved electric screwdriver the most according to claim 8, its feature exists
In, described first housing, the second housing, the 3rd housing, the 4th housing outer surface on
It is provided with some anti-skidding projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330655.5A CN104260032B (en) | 2014-07-11 | 2014-07-11 | A kind of improved electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330655.5A CN104260032B (en) | 2014-07-11 | 2014-07-11 | A kind of improved electric screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104260032A CN104260032A (en) | 2015-01-07 |
| CN104260032B true CN104260032B (en) | 2016-08-24 |
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| CN201410330655.5A Active CN104260032B (en) | 2014-07-11 | 2014-07-11 | A kind of improved electric screwdriver |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364764A (en) * | 2015-11-18 | 2016-03-02 | 宁波市鄞州永佳电机工具有限公司 | Multifunctional screwdriver |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008041720B4 (en) * | 2008-08-29 | 2020-02-06 | Robert Bosch Gmbh | Hand tool with brush motor |
| CN201264226Y (en) * | 2008-09-04 | 2009-07-01 | 常熟市东联电器制造有限责任公司 | Electric screwdriver structure with contactless inductive brake |
| CN201415383Y (en) * | 2009-05-22 | 2010-03-03 | 深圳市双环全新机电股份有限公司 | Electric screwdriver |
| CN202462310U (en) * | 2011-12-20 | 2012-10-03 | 宁波市华亿电器有限公司 | Electric screwdriver |
| CN203592441U (en) * | 2013-12-19 | 2014-05-14 | 宁波甬菲特电子科技有限公司 | Electric screwdriver |
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2014
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| CN104260032A (en) | 2015-01-07 |
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Address after: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai Investment Center East Yin Road No. 188 Patentee after: Zhejiang Minglei lithium energy technology Co., Ltd Address before: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai Investment Center East Yin Road No. 188 Patentee before: ZHEJIANG MINGLEI TOOLS INDUSTRY Co.,Ltd. |
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