CN107617974A - A kind of sander - Google Patents
A kind of sander Download PDFInfo
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- CN107617974A CN107617974A CN201710882126.XA CN201710882126A CN107617974A CN 107617974 A CN107617974 A CN 107617974A CN 201710882126 A CN201710882126 A CN 201710882126A CN 107617974 A CN107617974 A CN 107617974A
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- 230000006378 damage Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The present invention discloses a kind of sander, including：Hollow shaft assembly, clamping device component, drive component and housing unit；The hollow shaft assembly includes hollow shaft, the chuck being arranged in hollow shaft endoporus, the chuck pull bar being connected with the chuck and is arranged on hollow shaft periphery and is connected to keep the dished spring assembly of chuck pretightning force with the chuck pull bar；The clamping device component includes the slideway, the pulley bracket being arranged in slideway and the pulley being arranged on pulley bracket for being arranged on chuck pull bar end；The chuck front end is provided with multiple axial vertical slots, and the hollow shaft of the chuck and the hollow shaft assembly is coordinated by bellmouth, and the chuck is arranged in the hollow shaft by the dished spring assembly pretension；The chuck pull bar is connected with the chuck to keep pulling force of the chuck pull bar to the chuck, and the helicla flute that end profile formula is provided with slideway is available for the pulley to be moved thereon.The present invention improves the reliability of sander clamping structure.
Description
Technical field
The present invention relates to power tools technology field, in particular, is related to a kind of sander.
Background technology
Sander in the market has two kinds of quick-clamping structures, and one disc spring adds steel ball structure helical groove structure, separately
Outer one kind is that die springs add pulley structure.
For the first structure, by opening up helicla flute on the wall of swing-around trajectory, and inside swing-around trajectory
Annular inner orbit is set, and annular inner orbit sets half slot, and steel ball is arranged between helicla flute and half slot, due to passing through steel ball
Transferring axial thrust, because the pulling force of the offer of disc spring is bigger, cause helicla flute stress larger, and then to helicla flute damage very
Greatly, abrasion is so caused to reduce the life-span of helicla flute component in the case of long-time use, in addition, in the wall of swing-around trajectory
It is higher to open up helicla flute technology difficulty, causes cost to increase.
Another die springs add pulley structure, but because mould disc spring pulling force is smaller, cause tool-holder holding force small, this
In the case of need to set the output bearing of reduced size, and less output bearing is difficult to the requirement that reaches the life-span, Stability Analysis of Structures
Property is poor.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of higher sander of structural reliability.
The purpose of the present invention is achieved through the following technical solutions：A kind of sander, including：Hollow shaft assembly, dress
Clamp device component, drive component and housing unit；
The hollow shaft assembly includes hollow shaft（11）, be arranged on hollow shaft（11）Chuck in endoporus（3）And the chuck
（3）The chuck pull bar of connection（16）And be arranged on hollow shaft periphery and with the chuck pull bar（16）It is connected to retaining clip
Head（3）The dished spring assembly of pretightning force；The clamping device component includes being arranged on chuck pull bar（16）The slideway of end（27）, set
Put in slideway（27）Interior pulley bracket（26）And it is arranged on pulley bracket（26）On pulley；The chuck（3）Spiral shell end is set
It is equipped with multiple axial vertical slots, the chuck（3）With the hollow shaft of the hollow shaft assembly（11）Coordinated by bellmouth, the folder
Head（3）It is arranged on by the dished spring assembly pretension in the hollow shaft；
The chuck pull bar（16）With the chuck（3）Connect to keep the chuck pull bar（16）To the chuck（3）Drawing
Power, the slideway（27）On be provided with the helicla flute of end profile formula（27.1）It is available for the pulley（26.1）Moved thereon,
The pulley（26.1）In the helicla flute（27.1）The pulley bracket can be driven when upper mobile（26）Move axially, institute
State chuck pull bar（16）On be provided with and the pulley bracket（26）Corresponding step, the pulley bracket（26）Carry out axial shifting
The step can be withstood when dynamic to promote the chuck pull bar（16）And extrude the dished spring assembly and discharge the chuck（3）.
Preferably, the hollow shaft（11）For 8 millimeters of axis of the external diameter without projection of diameter, the hollow shaft（11）Front end
There is a groove, block two semicircle block cards in the groove（12）, the dished spring assembly include disc spring before shelves（13）, disc spring（14）And
Shelves after disc spring（17）, the disc spring front（13）From the hollow shaft（11）String arrives the hollow shaft below（11）On, the dish
Spring front（13）Front portion encases two semicircle block cards（12）And by the semicircle block card（12）It is spacing, the disc spring（14）From
The hollow shaft（11）Rear portion penetrates and is close to the disc spring front（13）, the disc spring front（13）With the semicircle block card
（12）The disc spring is provided（14）Front end is spacing, the chuck（3）From the hollow shaft（11）The hollow shaft is inserted in front end
（11）Endoporus, the chuck pull bar（16）With the chuck（3）Connection, the chuck pull bar（16）With being kept off after the disc spring（17）
On have pin hole, the hollow shaft（11）On have a U-shaped hole, a pin is from the chuck pull bar（16）Pin hole,
Hollow shaft（11）U-shaped hole, keep off after disc spring（17）Pin hole pass through, the chuck pull bar（16）With being kept off after the disc spring
（17）It is locked.
Preferably, the rear end endoporus of chuck 3 has screw thread, and the chuck pull bar 16 is with the chuck 3 by screw thread in institute
State and be attached inside hollow shaft 11.
Preferably, the hollow shaft（11）The brearing bore size at both ends is identical, wherein, the axle of the rear end of hollow shaft 11
Hold（22）It is provided with support set（21）, the bearing of the rear end of hollow shaft 11（22）Using bearing outer ring screw（23）Locked
Tightly, meanwhile, the bearing outer ring screw（23）Rear end is separated spring（24）Push down, be arranged on the hollow shaft（11）Rear portion
Preloading spring（19）The inner ring pretightning force of the bearing 22 is provided.
Preferably, the hollow shaft（11）Preceding end bearing is 1480 bearings（10）, 1480 bearing（10）The milli of endoporus 8
Rice, 14 millimeters of external diameter；The hollow shaft（11）Rear end bearing is 1280 bearings（22）, 1280 bearing（22）8 millimeters of endoporus,
12 millimeters of external diameter；1480 bearing（10）Rear end face inner ring is pressed in the semicircle block card（12）On, front end face inner ring is with being through
The hollow shaft（11）On fore bearing plain cushion（9）Contact, the fore bearing plain cushion（9）It is to be through the hollow shaft above（11）
On clutch shaft bearing wave washer（8）, the clutch shaft bearing wave washer（8）Upper is to be through the hollow shaft（11）On first
Trim ring in bearing（7）, trim ring in the clutch shaft bearing（7）Upper is to be through the hollow shaft（11）On the outer trim ring of clutch shaft bearing
（6）, the outer trim ring of the clutch shaft bearing（6）Push down 1480 bearing（10）Outer ring, trim ring in the clutch shaft bearing（7）Front end face
Higher than trim ring outside the clutch shaft bearing（6）And with being through the hollow shaft（11）On wind wheel（5）Contact, the wind wheel（5）It is interior
Hole encases the outer trim ring of clutch shaft bearing（6）Front end is cylindrical a part of but does not contact, the wind wheel（5）It is above described to be stuck in
Hollow shaft（11）Jump ring above（4）；The housing unit includes cap（1）, the cap（1）With motor casing（31）By screw thread
Connection, the cap（1）Wrap up the outer trim ring of the clutch shaft bearing（6）, support set 21, and the cap（1）Interior step pressure
The tight outer trim ring of clutch shaft bearing（6）The step of front end thinks 1480 bearings（10）Anterior spacing, 1480 bearing is provided（10）Afterwards
End face compresses the support set（8）, 1280 bearing（22）It is arranged on the support set（21）It is interior and by the support set
（21）Interior step is spacing, and a rear portion is by bearing outer ring screw（23）Being screwed in the support set 21 is screwed into, it is described
1280 bearings（22）Front end face inner ring is with being through the hollow shaft（11）On spring protecting sleeve（20）Rear end face contacts and by pretension
Spring（19）For 1280 bearing（22）Pretightning force, the support set are provided（21）Rear end face withstand on the motor casing（31）
Positioned on front end face..
Preferably, the pulley bracket（26）It is provided with symmetrical radial direction cylinder, the pulley（26.1）It is arranged on described
On cylinder.
Preferably, the motor casing of the housing unit（31）Front end is provided with two vertical slots, the pulley bracket（26）By institute
State motor casing（31）Wrap up wherein, the pulley bracket（26）Two cylinders and pulley（26.1）From the two of the motor casing 31
Individual vertical slot passes through, the pulley（26.1）Ride over the slideway（27）Helicla flute（27.1）On, the slideway（27）It is fixed on
The fore shell of the housing unit（41）It is interior, the pulley bracket（26）Top is cruciate flower pad（25）, the cruciate flower pad
（25）There is a cut spring top（24）, the cut spring（24）Internal diameter is more than the chuck pull bar（16）External diameter, described point
From spring（24）Upper end is wrapped in the bearing outer ring screw（23）On outside step.
Preferably, the slideway 27 is arranged on the housing unit by a plane bearing, and the plane bearing includes
Plane bearing bead circle（29）, the first plane bearing pad（30）With the second plane bearing pad（28）, the plane bearing leads to
Cross the first plane bearing pad（30）Push up the motor casing（31）Step on, the plane bearing another side passes through described
Two plane bearing pads（28）Push up the slideway（27）On rear end face, the slideway（27）It is also secured at the housing unit
Fore shell（41）It is interior, the slideway（27）Rotation can be by rotating fore shell（41）Realize.
Preferably, the drive component includes motor stator（36）, rotor（34）, motor fore bearing（32）And electricity
Bearing after machine（35）, the motor fore bearing（32）From the motor casing（31）Rear portion loads bearing chamber, the motor stator
（36）From the motor casing（31）Rear portion penetrates, the motor stator（36）On silicon steel sheet stack front end face and the motor casing
（31）Interior positioning step contact positioning, the rear end face that the silicon steel sheet stacks is with wrapping up the motor stator（31）The electricity at rear portion
Machine pressure ring（37）Front end face contacts, the motor pressure ring（37）It is followed by electric motor back shaft and holds room（38）, the electric motor back shaft holds
（35）It is arranged on the electric motor back shaft and holds room（38）In, the electric motor back shaft holds room（38）Motor screw is provided with below（39）,
The motor screw（39）From the motor casing（31）Rear portion penetrates, and is screwed in the motor casing（31）Institute is pushed down on internal screw thread
State electric motor back shaft and hold room（38）, the rotor（34）It is fixed on motor fore bearing（32）Held with electric motor back shaft（35）Between,
Wherein, the rotor（34）Output shaft pass through shaft coupling（18）With the chuck pull bar（16）Connection, the shaft coupling
（18）Inside is a cross-hole, the rotor（34）Output shaft front end be cross structure, the chuck pull bar
（16）End be also cross structure, the rotor（34）Output shaft and the chuck pull bar（16）Respectively described in insertion
Shaft coupling（18）It is interior.
The benefit that the present invention is brought is：In the chuck stretching assembly of the sander of the present invention, contrate wheel is provided with slideway
The helicla flute of wide formula, the helicla flute of the end profile formula are set directly on the end face of slideway, the pulley being arranged on inside slideway
Support is moved by pulley on helicla flute, pulley bracket can be made to realize axial movement, because helicla flute is arranged on the end of slideway
On face, the destruction to the overall construction intensity of slideway is smaller, and when rotating slideway, only by the unidirectional force of pulley, and slideway is whole
Body length is supported, and can keep good intensity, improves the life-span of sander, ensure that the reliability of clamping structure.
Chuck stretching assembly adds the structure of pulley using disc spring, and its part life is longer, and cost is lower.Clamping device profit
Pulling force is provided with disc spring, tool-holder holding force is big.In addition, hollow shaft front and back bearings are using the consistent structure of endoporus so that hollow shaft
It is cylindrical without additional processing step, reduce processing cost.
Brief description of the drawings
Fig. 1 is the decomposition chart of sander in the embodiment of the present invention；
Fig. 2 is the section of structure of sander in the embodiment of the present invention；
Fig. 3 is the pulley bracket of sander and slideway structure figure in the embodiment of the present invention.
Wherein：
1st, cap, 2, cutter, 3, chuck, 4, jump ring, 5, wind wheel, 6, the outer trim ring of clutch shaft bearing, 7, trim ring in clutch shaft bearing, 8, the
One bearing wave washer, 9, fore bearing plain cushion, 10,1480 bearings, 11, hollow shaft, 12, semicircle block card, 13, shelves before disc spring, 14,
Disc spring, 15, pull bar O circles, 16, chuck pull bar, 17, shelves after disc spring, 18, shaft coupling, 19, preloading spring, 20, spring protecting sleeve, 21,
Support set, 22,1280 bearings, 23, bearing outer ring screw, 24, cut spring, 25, cruciate flower pad, 26, pulley bracket, 27,
Slideway, the 28, second plane bearing pad, 29, plane bearing bead circle, the 30, first plane bearing pad, 31, motor casing, 32,
Motor fore bearing, 33, motor bearings preloading spring, 34, rotor, 35, electric motor back shaft hold, 36, motor stator, 37, motor
Pressure ring, 38, electric motor back shaft hold room, 39, motor screw, 40, wire outlet seat, 41, fore shell, 42, middle shell, 43, bonnet.
Embodiment
The preferred embodiment of the present invention is described below, those of ordinary skill in the art can be according to described below with this
The correlation technique in field is realized, and can be more clearly understood that the innovation of the present invention and the benefit brought.
It is as shown in Figures 1 and 2 a kind of specific embodiment of the sander provided, more specifically, the embodiment proposes
A kind of clamping structure of new sander, the sander include：Hollow shaft assembly, clamping device component, drive component and shell
Body component；Wherein, the hollow shaft assembly includes being used for the outer trim ring of chuck 3, jump ring 4, wind wheel 5, clutch shaft bearing for setting cutter 2
6th, trim ring 7, clutch shaft bearing wave washer 8, fore bearing plain cushion 9,1480 bearings 10, hollow shaft 11, semicircle block card in clutch shaft bearing
12nd, shelves 13, disc spring 14, pull bar O enclose shelves 17, shaft coupling 18, preloading spring 19, spring after 15, chuck pull bar 16, disc spring before disc spring
Sheath 20；The inside of the chuck 3 is hollow-core construction, the front end of chuck 3 be provided with three be uniformly distributed and with the chuck 3
The axial vertical slot of portion's insertion, the front end of chuck 3 is cylindrical a circular cone.The rear end endoporus of chuck 3 has screw thread.The clamping
Device assembly includes support set 21,1280 bearings 22, bearing outer ring screw 23, cut spring 24, cruciate flower pad 25, pulley branch
Frame 26, slideway 27, the second plane bearing pad 28, plane bearing support 29, the first plane bearing pad 30.The drive component
35, motor stator is held including motor casing 31, motor fore bearing 32, motor bearings preloading spring 33, rotor 34, electric motor back shaft
36th, motor pressure ring 37, electric motor back shaft hold room 38, motor screw 39, housing unit described in wire outlet seat 40 includes cap 1, fore shell 41,
Middle shell 42, bonnet 43.
In the present embodiment, with reference to shown in figure 1 and Fig. 2, the chuck 3 in the hollow shaft assembly passes through screw thread and chuck pull bar
16 connections.Pretension is arranged in the hollow shaft.Axial vertical slot may be such that cutter 2 can be easily inserted into chuck 3, and chuck
3 are coordinated with hollow shaft 11 by bellmouth so that chuck 3 is squeezed when inserting in bellmouth, so as to clamp-on tool 2.It is described
Hollow shaft assembly apparatus includes being arranged on shelves 13 before the disc spring of the front end of hollow shaft 11, shelves 17 after disc spring 14 and disc spring, institute
State the pretension of disc spring 14 to be arranged on before the disc spring after shelves 13 and the disc spring between shelves 17, shelves 17 and the chuck after the disc spring
Pull bar 16 connects.Specifically, shelves 17 are attached with the chuck pull bar 16 by pin after the disc spring, and it is corresponding, it is hollow
Axle reserves pin connection and mobile space, such as fluting etc..
More specifically, hollow shaft is axis of the external diameter of 8 millimeters of diameter without projection, and there is a groove front end, blocks two in groove
Semicircle block card 12, for disc spring front 13 from going here and there below onto hollow shaft 11, the front portion of disc spring front 13 encases two semicircle block cards 12, and
Spacing by semicircle block card 12, one group of disc spring 14 penetrates from the rear portion of hollow shaft 11, and is close to disc spring front 13.Disc spring front 13 and half
It is spacing that circle block card 12 provides disc spring front end.Chuck 3 inserts hollow shaft endoporus from the front end of hollow shaft 11, and chuck pull bar 16 passes through screw thread
Connected with chuck 3, chuck pull bar 16 has a U-shaped hole, a pin with having pin hole on gear 17 after disc spring in hollow shaft 11
The pin hole of gear 17 passes through after the U-shaped hole of pin hole, hollow shaft 11 from chuck pull bar 16, disc spring.Chuck pull bar 16 and dish
Gear 17 is locked after spring, and cutter 2 inserts the endoporus of chuck 3.Three axial vertical slots are opened in the front end of chuck 3, and chuck 3 passes through cone with hollow shaft 11
Shape hole coordinates, and the pulling force of disc spring 14 is delivered on chuck pull bar 16 by shelves after disc spring 17, then tenses chuck by chuck pull bar 16
3, chuck 3 is by the bellmouth crimp in hollow shaft 11, so as to lock cutter 2.Preloading spring 19 is through in hollow shaft 11, preceding
End is blocked by gear 14 after disc spring, and the spring protecting sleeve 20 that rear end is equally through in hollow shaft 11 blocks, and this part turns for sander
A part for son.
The chuck pull bar 16 and the chuck 3 are connected by screw thread inside the hollow shaft 11 in the present embodiment
Connect, be advantageous to chuck pull bar 16 by the way of threaded connection and be connected with chuck 3 inside hollow shaft, connection reliability is high.Adopt
There is larger pulling force with disc spring 14, the chucking power of chuck can be ensured, so as to ensure the tightness of cutter clamping.
In the present embodiment, the bearing at the both ends of hollow shaft 11（1480 bearings 10 and 1280 bearings 22）Hole size phase
Together, wherein, 1280 bearings 22 of the rear end of hollow shaft 11 are provided with support set 21 so that the service life of bearing is longer, and structure is more
It is stable, noise can be also reduced, its difficulty of processing is low, and cost is low.In addition, 1280 bearings 22 of the rear end of hollow shaft 11 are using outside bearing
Circle screw 23 locked, meanwhile, the rear end of bearing outer ring screw 23 be separated spring 24 push down, as bearing outer ring screw 23 not
Easily loosen.The preloading spring 19 for being arranged on the rear portion of hollow shaft 11 provides the inner ring pretightning force of 1280 bearings 22.
More specifically, end bearing is 8 millimeters of 1,480 10,1480 bearing of bearing, 10 endoporus before hollow shaft, 14 millimeters of external diameter.Afterwards
End bearing is 1280 bearings 22.8 millimeters of 1280 bearing, 22 endoporus, 12 millimeters of external diameter.The rear end face inner ring of 1480 bearing 10 is pressed in half
On circle block card 12, front end face inner ring contacts with the fore bearing plain cushion 9 being through in hollow shaft 11, and fore bearing plain cushion 9 is to be through above
Clutch shaft bearing wave washer 8 in hollow shaft 11, to be through the clutch shaft bearing internal pressure in hollow shaft on clutch shaft bearing wave washer 8
Circle 7, to be through trim ring 6 clutch shaft bearing in hollow shaft 11 outer on trim ring 7 in clutch shaft bearing, the outer trim ring 6 of clutch shaft bearing is pushed down
The outer ring of 1480 bearing 10, the front end face of trim ring 7 is higher than the outer trim ring 6 of clutch shaft bearing in clutch shaft bearing, with the wind being through in hollow shaft 11
The contact of wheel 5, the endoporus of wind wheel 5 encases the outer cylindrical part in the front end of trim ring 6 of clutch shaft bearing, but does not contact, and wind wheel 5 is above
The jump ring 4 being stuck in before hollow shaft 11.For cap 1 with motor casing 31 by being threadedly coupled, cap 1 wraps up the outer trim ring 6 of clutch shaft bearing, branch
Support set 21, and interior step compresses the step of the outer front end of trim ring 6 of clutch shaft bearing, provided for 1480 bearings 10 it is anterior spacing,
The rear end face of 1480 bearing 10 compresses support set 8.1280 bearings 22 are put into support set 21, and are limited by the interior step of support set 21
Position, rear portion is screwed into being screwed in support set 21 by bearing outer ring screw 23.The front end face inner ring of 1280 bearing 22 is with being through sky
The rear end face of spring protecting sleeve 20 contact in mandrel 11, and be that 1280 bearings 22 provide pretightning force by preloading spring 19.Support set 21
Rear end face withstand on the front end face of motor casing 31 and position.
In the present embodiment, the clamping device component include slideway 27, the pulley bracket 26 that is arranged in slideway 27 and
The pulley 26.1 being arranged on pulley bracket 26；The helicla flute 27.1 of end profile formula is provided with the slideway 27（With reference to figure 1
The structure of slideway 27）It is available for the pulley 26.1 to be moved thereon, the pulley 26.1 can band when being moved on the helicla flute
Move the pulley bracket 26 to move axially, be provided with the chuck pull bar 16 in the hollow shaft assembly and the pulley branch
Step corresponding to frame 26（With reference to figure 1 and Fig. 2）, the pulley bracket 26 can withstand the step to promote when moving axially
The chuck pull bar 16 of the hollow shaft assembly simultaneously extrudes the clamping device.The helicla flute of end profile formula is provided with slideway 27
27.1, the helicla flute 27.1 of the end profile formula is set directly on the end face of slideway, the pulley bracket being arranged on inside slideway
26 are moved by pulley 26.1 on helicla flute 27.1, pulley bracket 26 can be made to realize axial movement, because helicla flute 27.1 is set
Put on the end face of slideway, the destruction to the overall construction intensity of slideway 27 is smaller, when rotating slideway 27, only by the list of pulley
Xiang Li, and slideway is entire length is supported, and can keep good intensity, reduce the possibility of damage, ensure that clamping
The reliability of apparatus structure.
In the present embodiment, the pulley bracket 26 it is cylindrical on be provided with symmetrical radial direction cylinder, the pulley 26.1 is set
Put on the cylinder, pulley rotates by axle of cylinder, so as to reduce the friction between helicla flute 27.1, can improve helicla flute
27.1 and the service life of pulley 26.1.
The upper surface of slideway 27 is two helicla flutes symmetrically risen 27.1, and the left and right sides of pulley bracket 26 has two symmetrically
The cylinder of radial direction, fills two pulleys 26.1 above, and pulley 26.1 is pressed on the helicla flute 27.1 of slideway 27.Open the front end of motor casing 31
There are two vertical slots, pulley bracket 26 is wrapped up two cylinders for wherein filling pulley 26.1 and pulley 26.1 by motor casing 31 from motor
Two vertical slots of shell 31 are passed through, and pulley 26.1 is ridden on the helicla flute 27.1 of slideway 27, and slideway 27 is fixed in fore shell 41.Pulley
The top of support 26 is cruciate flower pad 25, and there is a cut spring 24 top of cruciate flower pad 25, and the internal diameter of cut spring 24 is big
In the external diameter of chuck pull bar 16, upper end is wrapped on the step outside bearing outer ring screw 23.
In the present embodiment, the slideway 27 in the clamping device component is arranged on the housing group by a plane bearing
On part.The specific rearward end of slideway 27 is provided with a plane bearing, including plane bracing strut 29, the first plane bearing pad
30 and the second plane bearing pad 28, the plane bearing pass through the first plane bearing pad 30 top to the step of motor casing 31
On, another side is pushed up on the rear end face of slideway 27 by the second plane bearing pad 28, and the slideway 27 is also secured at described
In fore shell 41, the rotation of slideway 27 can be realized by rotating fore shell 41.
In the present embodiment, the drive component includes motor stator 38 and rotor 40, the chuck pull bar 16
Pass through the direct connection of shaft coupling 14 with the rotor 40.The mode of direct connection ensures that the output of motor reaches maximum delivery efficiency.
Motor stator 36 is stacked by silicon steel sheet, winding, coil holder, contact pin composition.Silicon steel sheet stacks parcel winding, winding attachment
On coil holder.Winding, coil holder rear and front end, which has, stretches out silicon steel sheet stacking.Motor stator rear end is contact pin, motor three-phase outlet
It is welded on contact pin.There is internal thread in the interior forward end endoporus of motor casing 31, followed by front motor end bearing room, followed by motor is determined
The positioning step of son 36, is followed by stator installation position, is finally the screw thread of motor screw.Outside motor casing by two small one and large one
Cylinder composition.Big cylindrical inside is motor stator, and there are four grooves big cylinder front end.Electric motor back shaft, which is held, electric motor back shaft on room
Mounting hole is held, the motor outlet wire hole of also three even circumferential distributions, these three bore dias are than three circles on motor outlet wire seat
Column diameter is larger, facilitates outlet.
Motor fore bearing 32 loads bearing chamber from the rear portion of motor casing 31, and motor stator 36 penetrates from the rear portion of motor casing 1, motor
Silicon steel sheet on stator 36 stacks front end face and contacts positioning with the positioning step in motor casing.The rear end face and bag that silicon steel sheet stacks
The front end face of motor pressure ring 37 contact at stator rear portion is wrapped up in, motor pressure ring 37 is followed by electric motor back shaft and holds room.Electric motor back shaft holds 35 just
Held mounted in electric motor back shaft in room.The electric motor back shaft room of holding is followed by motor screw 39, and motor screw 39 penetrates from the rear portion of motor casing 31,
It is screwed on the screw thread inside motor casing 31, pushes down electric motor back shaft and hold room.Electronics rotor 34 be fixed on former and later two motor bearings it
Between.Motor shaft front end is cross, and the rear end of chuck pull bar is also a cross.Motor exports leans on shaft coupling with handle front end cross
It is connected, is a cross-hole inside shaft coupling, the cross of motor shaft is inserted in one end, and the other end inserts the ten of chuck pull bar 16
Word.
The front end of motor outlet wire seat 40 is 3 symmetrical cylindrical sockets, and respectively there are the female plug of a cylindrical, hollow, motor in inside
The contact pin of stator is inserted into this female plug, and female plug other end is exactly motor cable.It is a through hole among motor outlet wire seat, electricity
Electric cable is just stretched out outside handle from this through hole.Motor outlet wire seat is held behind room mounted in electric motor back shaft, inserts the 3 of motor stator
On individual outlet pin, handle bonnet is connected by screw thread with handle casing, and pushes down motor outlet wire seat.
In the present embodiment, the housing unit includes cap 1, fore shell 41, middle shell 42 and bonnet 43, outside motor casing 31
Portion is shell 42 in handle.There are four tongues in handle inside shell 42, be stuck in four grooves outside motor casing.Wherein, it is described
The front end of hollow shaft 11 is fixed to by bearing on the inwall of the cap 1.Bearing can use the internal diameter size of formed objects, this
Sample can reduce the processing of the step of hollow shaft 11, reduce difficulty of processing.
Rotary handle fore shell 41, band sliding way 27 rotate.Slideway 27 to the direction that helicla flute rises rotate when, pulley is suitable
Helicla flute to move upwards, band moving pulley bracket 26 and cruciate flower pad 25 move up, and after touching chuck pull bar 16, drive
Chuck pull bar 16 moves up, and extruding an official document or note spring 14, jacks up chuck 3 by screw thread, departs from the conical surface of hollow shaft 11, eliminate spring pair
The pulling force of chuck, cutter at this moment easily can be changed or taken out, reach the purpose of cutter quick release.
Slideway 27 is rotated to the direction that helicla flute declines, pulley driving pulley bracket 26 moves downward, with chuck pull bar
16 disengage, and the elastic force of spring acts on the gear of chuck pull bar 16, is connected through a screw thread and passes to chuck 3, chuck 3 is produced
Downward pulling force, so as to lock cutter, the elastic force of pad spring departs from by rotor and clamping device device, and rotor can freely revolve
Turn.
The present embodiment clamping device component uses pulley structure, and part life is longer, and cost is lower.Hollow shaft assembly uses
Disc spring structure, tool-holder holding force are big.Front and back bearings endoporus is consistent, the cylindrical no step of hollow shaft, reduces difficulty of processing and cost.It is defeated
It is big to go out bearing size, the life-span is longer.Another bearing adds a bearings set, makes bearing life longer, structure is steady
Fixed, noise is small, and difficulty of processing is low, and cost is low.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, these should all be considered as belonging to this hair
Bright protection domain.
Claims (9)
1. a kind of sander, including：Hollow shaft assembly, clamping device component, drive component and housing unit；
Characterized in that, the hollow shaft assembly includes hollow shaft（11）, be arranged on hollow shaft（11）Chuck in endoporus（3）、
With the chuck（3）The chuck pull bar of connection（16）And it is arranged on the hollow shaft（11）Periphery and with the chuck pull bar
（16）It is connected to keep chuck（3）The dished spring assembly of pretightning force；The clamping device component includes being arranged on chuck pull bar
（16）The slideway of end（27）, be arranged on slideway（27）Interior pulley bracket（26）And it is arranged on pulley bracket（26）On cunning
Wheel；The chuck（3）Front end is provided with multiple axial vertical slots, the chuck（3）With the hollow shaft of the hollow shaft assembly（11）
Coordinated by bellmouth, the chuck（3）It is arranged on by the dished spring assembly pretension in the hollow shaft；
The chuck pull bar（16）With the chuck（3）Connect to keep the chuck pull bar（16）To the chuck（3）Drawing
Power, the slideway（27）On be provided with the helicla flute of end profile formula（27.1）It is available for the pulley（26.1）Moved thereon,
The pulley（26.1）In the helicla flute（27.1）The pulley bracket can be driven when upper mobile（26）Move axially, institute
State chuck pull bar（16）On be provided with and the pulley bracket（26）Corresponding step, the pulley bracket（26）Carry out axial shifting
The step can be withstood when dynamic to promote the chuck pull bar（16）And extrude the dished spring assembly and discharge the chuck（3）.
2. sander as claimed in claim 1, it is characterised in that the hollow shaft（11）For 8 millimeters of diameter external diameter without convex
The axis risen, the hollow shaft（11）There is a groove front end, blocks two semicircle block cards in the groove（12）, the dished spring assembly bag
Include shelves before disc spring（13）, disc spring（14）And shelves after disc spring（17）, the disc spring front（13）From the hollow shaft（11）Wear below
To the hollow shaft（11）On, the disc spring front（13）Front portion encases two semicircle block cards（12）And kept off by the semicircle
Card（12）It is spacing, the disc spring（14）From the hollow shaft（11）Rear portion penetrates and is close to the disc spring front（13）, the dish
Spring front（13）With the semicircle block card（12）The disc spring is provided（14）Front end is spacing, the chuck（3）From the hollow shaft
（11）The hollow shaft is inserted in front end（11）Endoporus, the chuck pull bar（16）With the chuck（3）Connection, the chuck pull bar
（16）With being kept off after the disc spring（17）On have pin hole, the hollow shaft（11）On have a U-shaped hole, a pin is from described
Chuck pull bar（16）Pin hole, hollow shaft（11）U-shaped hole, keep off after disc spring（17）Pin hole pass through, the chuck draw
Bar（16）With being kept off after the disc spring（17）It is locked.
3. sander as claimed in claim 2, it is characterised in that the chuck（3）Rear end endoporus has screw thread, and the chuck is drawn
Bar（16）With the chuck（3）By screw thread in the hollow shaft（11）Inside is attached.
4. sander as claimed in claim 2, it is characterised in that the hollow shaft（11）The brearing bore size phase at both ends
Together, wherein, the hollow shaft（11）The bearing of rear end（22）It is provided with support set（21）, the hollow shaft（11）The bearing of rear end
（22）Outer ring use bearing outer ring screw（23）Locked, meanwhile, the bearing outer ring screw（23）Rear end is separated bullet
Spring（24）Push down, be arranged on the hollow shaft（11）The preloading spring at rear portion（19）The bearing is provided（22）Inner ring pretension
Power.
5. sander as claimed in claim 2, it is characterised in that the hollow shaft（11）Preceding end bearing is 1480 bearings
（10）, 1480 bearing（10）8 millimeters of endoporus, 14 millimeters of external diameter；The hollow shaft（11）Rear end bearing is 1280 bearings
（22）, 1280 bearing（22）8 millimeters of endoporus, 12 millimeters of external diameter；1480 bearing（10）Rear end face inner ring is pressed in described
Semicircle block card（12）On, front end face inner ring is with being through the hollow shaft（11）On fore bearing plain cushion（9）Contact, the fore bearing
Plain cushion（9）It is to be through the hollow shaft above（11）On clutch shaft bearing wave washer（8）, the clutch shaft bearing wave washer
（8）Upper is to be through the hollow shaft（11）On clutch shaft bearing in trim ring（7）, trim ring in the clutch shaft bearing（7）Upper is to be through
The hollow shaft（11）On the outer trim ring of clutch shaft bearing（6）, the outer trim ring of the clutch shaft bearing（6）Push down 1480 bearing（10）
Outer ring, trim ring in the clutch shaft bearing（7）Front end face is higher than the outer trim ring of the clutch shaft bearing（6）And with being through the hollow shaft
（11）On wind wheel（5）Contact, the wind wheel（5）Endoporus encases the outer trim ring of clutch shaft bearing（6）Front end it is cylindrical a part but not
Contact, the wind wheel（5）It is above to be stuck in the hollow shaft（11）Jump ring above（4）；The housing unit includes cap
Lid（1）, the cap（1）With motor casing（31）By threaded connection, the cap（1）Wrap up the outer trim ring of the clutch shaft bearing（6）、
Support set 21, and the cap（1）Interior step compresses the outer trim ring of clutch shaft bearing（6）The step of front end thinks 1480 bearings
（10）Anterior spacing, 1480 bearing is provided（10）Rear end face outer ring compresses the support set（8）Front end face, 1280 axle
Hold（22）It is arranged on the support set（21）The support set（21）Interior step withstands 1280 bearing（22）Outside front end face
Enclose spacing, 1280 bearing（22）Rear end face outer ring is by bearing outer ring screw（23）The screw thread being screwed into the support set 21 is consolidated
It is fixed, 1280 bearing（22）Front end face inner ring is with being through the hollow shaft（11）On spring protecting sleeve（20）Rear end face contacts simultaneously
By preloading spring（19）For 1280 bearing（22）Pretightning force, the support set are provided（21）Rear end face withstand on the motor
Shell（31）Positioned on front end face.
6. sander as claimed in claim 5, it is characterised in that the pulley bracket（26）It is provided with symmetrical radially circle
Post, the pulley（26.1）It is arranged on the cylinder.
7. sander as claimed in claim 6, it is characterised in that the motor casing of the housing unit（31）Front end is provided with two
Vertical slot, the pulley bracket（26）By the motor casing（31）Wrap up wherein, the pulley bracket（26）Two cylinders and cunning
Wheel（26.1）From the motor casing（31）Two vertical slots pass through, the pulley（26.1）Ride over the slideway（27）Helicla flute
（27.1）On, the slideway（27）It is fixed on the fore shell of the housing unit（41）It is interior, the pulley bracket（26）Top is ten
Word spends pad（25）, the cruciate flower pad（25）There is a cut spring top（24）, the cut spring（24）Internal diameter is more than
The chuck pull bar（16）External diameter, the cut spring（24）Upper end is wrapped in the bearing outer ring screw（23）Outside step
On.
8. sander as claimed in claim 1, it is characterised in that the slideway（27）It is arranged on by a plane bearing described
On housing unit, the plane bearing includes plane bearing bead circle（29）, the first plane bearing pad（30）With the second plane
Bearing shim（28）, the plane bearing passes through the first plane bearing pad（30）Push up the motor casing（31）Step on,
The plane bearing another side passes through the second plane bearing pad（28）Push up the slideway（27）On rear end face, the cunning
Road（27）It is also secured at the fore shell of the housing unit（41）It is interior, the slideway（27）Rotation can be by rotating fore shell（41）It is real
It is existing.
9. sander as claimed in claim 1, it is characterised in that the drive component includes motor stator（36）, motor turn
Son（34）, motor fore bearing（32）And electric motor back shaft is held（35）, the motor fore bearing（32）From the motor casing（31）Afterwards
Portion loads bearing chamber, the motor stator（36）From the motor casing（31）Rear portion penetrates, the motor stator（36）On silicon
Steel disc stacks front end face and the motor casing（31）Interior positioning step contact positioning, the rear end face and bag that the silicon steel sheet stacks
Wrap up in the motor stator（31）The motor pressure ring at rear portion（37）Front end face contacts, the motor pressure ring（37）It is followed by electric motor back shaft
Hold room（38）, the electric motor back shaft holds（35）It is arranged on the electric motor back shaft and holds room（38）In, the electric motor back shaft holds room（38）
Motor screw is provided with below（39）, the motor screw（39）From the motor casing（31）Rear portion penetrates, and is screwed in the motor
Shell（31）The electric motor back shaft, which is pushed down, on internal screw thread holds room（38）, the rotor（34）It is fixed on motor fore bearing
（32）Held with electric motor back shaft（35）Between, wherein, the rotor（34）Output shaft pass through shaft coupling（18）With the folder
Head pull bar（16）Connection, the shaft coupling（18）Inside is a cross-hole, the rotor（34）Output shaft front end
For cross structure, the chuck pull bar（16）End be also cross structure, the rotor（34）Output shaft with it is described
Chuck pull bar（16）The shaft coupling is inserted respectively（18）It is interior.
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| CN107617974B (en) | 2023-12-08 |
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Effective date of registration: 20231112 Address after: 602, industrial building, No.2, Furong 7th Road, Xinqiao community, Xinqiao street, Bao'an District, Shenzhen, Guangdong 518000 Applicant after: Shenzhen Fu Tai Tai Technology Co.,Ltd. Address before: 518000 Unit 4A, Building A, Xihai Garden, Nanxin Road, Nanshan District, Shenzhen, Guangdong Province Applicant before: Gao Yong |
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