CN103567842B - Grinding power tool - Google Patents

Grinding power tool Download PDF

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Publication number
CN103567842B
CN103567842B CN201210278723.9A CN201210278723A CN103567842B CN 103567842 B CN103567842 B CN 103567842B CN 201210278723 A CN201210278723 A CN 201210278723A CN 103567842 B CN103567842 B CN 103567842B
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CN
China
Prior art keywords
base plate
shaft
driven shaft
housing
driving shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN201210278723.9A
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Chinese (zh)
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CN103567842A (en
Inventor
张士松
吴宇
徐静涛
钟红风
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Machinery Zhangjiagang Co ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Priority to CN201210278723.9A priority Critical patent/CN103567842B/en
Priority to PCT/CN2013/080988 priority patent/WO2014023229A1/en
Publication of CN103567842A publication Critical patent/CN103567842A/en
Application granted granted Critical
Publication of CN103567842B publication Critical patent/CN103567842B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06Dust extraction equipment on grinding or polishing machines
    • B24B55/10Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided

Abstract

The invention discloses a grinding power tool, which comprise a shell, a motor, a bottom plate and a driving shaft, wherein the motor is arranged in the shell; the bottom plate is arranged below the shell, and is used for connecting a ground part; the driving shaft is driven to rotate under the action of the motor, and is arranged away from the bottom plate; a driven shaft is arranged on the bottom plate; one end of the driven shaft can be rotationally connected with the shell; the other end of the driven shaft can be eccentrically and rotationally connected with the bottom plate; a transmission device is arranged between the driving shaft and the driven shaft; when the driving shaft rotates, the transmission shaft is used for driving the driven shaft to rotate through the transmission device, and the bottom plate is driven move in the form of a regular track. The moving locus of each point on the bottom plate of the grinding power tool is approximately the same, so that the grinding quality and the efficiency can be improved.

Description

Grinding power tool
Technical field
The present invention relates to a kind of power tool, the grinding power tool of especially a kind of hand-held.
Background technology
Sander is more common hand-held grinding power tool in modern carpenter's industry, and it is main by being loaded on sander Sand paper on base plate or emery cloth are made high-speed track and are swung, and carry out sanding operation to surfaces such as timber, metal, glass, plastics, therefore It is widely used in the industries such as building decoration, Furniture manufacture, automobile, shipbuilding.Electric sander has the spy such as easy to operate, safe and reliable Point.Using can save time when it, laborsaving, and smooth surface can be obtained.
Sander has two types, and that is, flat board swings sander (abbreviation plate sand) and disc type orbital sander (referred to as circle Sand), the movement locus of both base plates are different.Operationally, base plate is revolved round the sun and spinning motion circle sand simultaneously;And plate sand is in work When making, base plate only does revolution motion.
As Chinese patent discloses CN101134295A patent application, disclose a kind of swing sander.It includes erecting The motor of straight setting, motor shaft end is provided with eccentric part, and the centrage of eccentric part is arranged with respect to the eccentric axis of motor drive shaft (having at regular intervals).Base plate connects on the motor by eccentric part, is respectively arranged between the corner of base plate and housing One flexible feet 24.During motor shaft turn, rotated around the eccentric axis of motor drive shaft by eccentric part drive base plate, meanwhile, Because the traction by four flexible feets 24 is limited, base plate makees the track motion of rule.
However, above-mentioned swing sander, because motor is vertically arranged, and base plate generally setting is larger.Due to motor drive shaft Only there is and base plate between a driving point in the middle part of base plate, therefore, during work, the friction of in the middle part of base plate and peripheral region Efficiency occurs difference, thus leading to be ground surface uneven.Further, since motor is vertically arranged, make the height of whole machine too Greatly, make the vibrations producing during work larger, can be easy to make the arm Fatigue of operator, affect operating handle.
Therefore, it is necessary in fact to provide a kind of improved grinding power tool, to solve the above problems.
Content of the invention
It is an object of the invention to provide a kind of grinding power tool, the movement locus substantially phase of each point on base plate can be made With to improve grinding quality and efficiency.
For achieving the above object, the technical solution adopted in the present invention is as follows:A kind of grinding power tool, including:Housing; Motor, is arranged in described housing;Base plate, is arranged on below described housing, for connecting abrading article;And driving shaft, described Rotary motion under the drive of motor, and with described base plate interval setting.Wherein, described base plate is provided with driven shaft, described from One end of moving axis can be rotationally connected with described housing, and the other end can be connected to eccentric rotary with described base plate, described master It is provided with actuating device between moving axis and described driven shaft, when described driving shaft rotates, driven by described actuating device described Driven shaft rotates, and then makes described base plate make the track type movement of rule.
Preferably, described driven shaft passes through two bearings connections mounted thereto on the housing.
Preferably, described two bearing spacer settings, described actuating device is connected to described driven shaft positioned at described two On section between bearing.
Preferably, described motor has the base that in the vertical direction is located at bottom, and described two bearings have perpendicular Nogata is located at the upper surface of the top and the lower surface being located at bottom upwards, and the base of described motor is perpendicular to described upper surface Straight height is less than the vertical height between described upper surface and described lower surface.
Preferably, described housing is provided with host cavity, and what described two bearings were parallel is arranged on described collecting intracavity.
Preferably, between the two ends of described base plate and described housing, it is respectively symmetrically and is provided with two flexible feets.
Preferably, described driving shaft is vertically arranged, and described driven shaft is parallel to described driving shaft.
Preferably, described driven shaft is provided with the first eccentric part, described first eccentric part is inclined with respect to described driven shaft Heart setting is such that it is able to drive described base plate with respect to described driven shaft eccentric rotary.
Preferably, described actuating device can be one of belt transmission, gear drive, Chain conveyer.
Preferably, described motor transverse horizontal setting.
By arranging driving shaft, driven shaft and connecting driving shaft and driven shaft drive, driving shaft is with base plate not even Connect, and be connected with driven shaft, so that the rotation of driving shaft is transferred to driven shaft by actuating device, and finally drive base plate inclined The heart rotates.On the base plate of this grinding power tool the movement locus of each point roughly the same such that it is able to improve polishing quality and effect Rate.
Brief description
Fig. 1 is the schematic perspective view of sander in first embodiment of the invention.
Fig. 2 is the schematic perspective view after sander housing shown in Fig. 1 removes half.
Fig. 3 is sander shown in Fig. 1 in the generalized section of vertical direction.
Fig. 4 is sander generalized section in the horizontal direction shown in Fig. 1.
Fig. 5 is the perspective exploded view of sander shown in Fig. 1.
The schematic perspective view that Fig. 6 observes from other direction for sander shown in Fig. 1.
Fig. 7 carries out the generalized section of transverse cross sectional for sander shown in Fig. 1 along dust collect plant.
Fig. 8 is the schematic perspective view of sander in second embodiment of the invention.
Fig. 9 is that the housing of sander shown in Fig. 8 removes the schematic perspective view after half.
Figure 10 is sander shown in Fig. 8 in the generalized section of vertical direction.
The schematic perspective view of sander in Figure 11 third embodiment of the invention.
Figure 12 is that the housing of sander shown in Figure 11 removes the schematic perspective view after half.
Figure 13 is sander shown in Figure 11 in the generalized section of vertical direction.
Figure 14 is the structural representation of sander in four embodiment of the invention.
Figure 15 is the structural representation of sander in fifth embodiment of the invention.
Figure 16 is the structural representation of sander in sixth embodiment of the invention.
Figure 17 is the structural representation of sander in seventh embodiment of the invention.
Figure 18 is the structural representation of sander in eighth embodiment of the invention.
Figure 19 is the structural representation of sander in ninth embodiment of the invention.
Related elements reference numeral in diagram is as follows:
100. sander 126. second eccentric part 17. dust collect plant
10. housing 127. 6th bearing 170. Elastic buckle
101. host cavity, 13. base plate 171. dust-collecting box
102. front end, 131. bottom surface 172. cyclone separator
103. rear end, 132. top 173. circulation chamber
104. exhaust chamber, 133. tail end 174. tornadotron
105. vent, 134. base plate 175. entrance
11. motor 135. dust groove 176. exports
111. motor drive shaft, 136. dust room 177. antetheca
112. clutch shaft bearing, 14. flexible feet 178. rear wall
113. bevel pinion, 15. driven shaft 18. dust absorption fan
114. fan shaft, 151. 5th bearing 20. housing
12. driving shaft, 16. actuating device 200. sander
121. bevel gear wheel, 161. power transmission shaft 201. exhaust chamber
122. second bearing, 162. driving member 202. dust passage
123. 3rd bearing, 163. 7th bearing 21. motor
124. first eccentric part 164. first forked portion 211. motor drive shaft
125. fourth bearing 165. second forked portion 212. fan shaft
22. driving shaft, 41. motor 651. first gear
23. base plate, 42. driving shaft 652. second gear
231. raised 43. driven shaft 70. housings
24. dust absorption fan, 44. base plate 700. sander
25. driven shaft, 45. actuating device 71. motor
26. actuating device, 46. drivewheel 711. motor drive shaft
27. dust collect plant, 47. driven pulley 712. axis
271. outlet 50. housing 72. driving shafts
28. elastic component, 500. sander 73. base plate
29. tight loop, 51. motor 731. bottom surface
30. housing, 52. driving shaft 74. flexible feet
300. sander 521. first eccentric part 741. summit
301. host cavity, 522. clutch shaft bearing 800. sander
31. motor, 53. base plate 80. housing
311. motor drive shaft, 531. top 801. head
312. bevel pinion, 532. tail end 802. cavity
313. base, 54. driven shaft 81. motor
32. driving shaft, 541. first paragraph 82. driving shaft
321. bevel gear wheel, 542. second segment 83. base plate
322. first belt wheel 543. second bearing 84. switchs
33. driven shaft, 544. 3rd bearing 85. circuit board
331. second belt wheel, 60. housing 900. sander
332. first eccentric part, 600. sander 90. housing
333. clutch shaft bearing, 61. motor 91. motor
334. second bearing, 62. driving shaft 92. driving shaft
335. upper surface, 621. first eccentric part 921. first belt wheel
336. lower surface, 622. clutch shaft bearing 93. driven shaft
34. base plate, 63. driven shaft 931. second belt wheel
35. actuating device 631. second eccentric part 94. base plate
36. flexible feet, 632. second bearing 95. actuating device
40. housing, 64. base plate 96. clutch shaft bearing
400. sander, 65. actuating device 97. second bearing
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Specific embodiment one
Refer to Fig. 1 and Fig. 2, a kind of grinding power tool, specifically a kind of low clearance flat board swings sander 100.Should Sander 100 includes housing 10, the motor 11 being housed in housing 10, the driving shaft 12 extending from housing 10, is connected to Base plate 13 on driving shaft 12 and the flexible feet 14 being arranged between housing 11 and base plate 13.When motor 11 rotates, by master Moving axis 12 drives base plate 13 eccentric rotary, and meanwhile, under the restriction of flexible feet 14, base plate 13 finally does the track fortune of rule Dynamic.
Housing 10 overall dimensions are less, and shape, substantially as mouse, just can easily be gripped with handss.Motor 11 is horizontal Setting, is housed in housing 10.Motor 11 horizontally set, to reduce the height of whole machine, it has motor drive shaft 111, motor drive shaft 111 On clutch shaft bearing 112 is installed, be supported in housing 10 by clutch shaft bearing 112.Between motor drive shaft 111 and driving shaft 12, if There are the bevel pinion 113 worked in coordination and bevel gear wheel 121, thus the high-speed rotation of motor drive shaft 111 is delivered to driving shaft 12 Slowly run.
Base plate 13 is roughly triangular, and it has bottom surface 131, bottom surface 131 is passed through velcro etc. and removably connects There are the abrading article such as sand paper or emery cloth.During work, the surface that abrading article acts on workpiece under the driving of base plate 13 carries out sand of polishing Optical processing.Base plate 13 has pointed shape top 132 and the tail end 133 relative with top 132, and the tip on top 132 is located exactly at On the center line X1 of tail end 133.
Base plate 13 is suspended on below housing 10 by flexible feet 14, in present embodiment, arranges two flexible feets 14. Two flexible feets 14 are near the tail end 133 of base plate 13, and are symmetrical arranged with respect to the center line X1 of tail end 133.In addition, driving shaft 12 With the interface sites of base plate 13 near the top 132 of base plate 13, and it is located on the center line X1 of tail end 133.Therefore, sander 100 Operationally, driving shaft 12 drives base plate 13 to rotate, but the restriction due to two flexible feets 14 and dragging, base plate 13 The final track type movement making rule.
As shown in Figures 2 and 3, driving shaft 12 passes through the second bearing 122 that be arranged in parallel and 3rd bearing 123 rotationally It is arranged in housing 10, it has the axis X 2 being approximately perpendicular to base plate 13.The end of driving shaft 12 is provided with the first eccentric part 124, the first eccentric part 124 has centrage X3, and this centrage X3 is parallel to the axis X 2 of driving shaft 12.Base plate 13 is provided with and leans on The holding seat 134 on nearly top 132, the first eccentric part 124 on driving shaft 12 is housed in holding seat 134.In present embodiment, It is arranged with fourth bearing 125 further, during assembling, fourth bearing 125 is preferably installed to holding seat outside first eccentric part 124 In 134, thus being rotationally connected to eccentric for base plate 13 on driving shaft 12.
During motor 11 work, by the cooperation of bevel pinion 113 and bevel gear wheel 121, motor drive shaft 111 will rotate biography of slowing down It is handed to driving shaft 12.When driving shaft 12 rotates, then base plate 13 is driven around axis X 2 eccentric rotary by the first eccentric part 124, And finally under the restriction of two flexible feets 14, make the track type movement of base plate 13 final output rule.But, due to driving shaft 12 with the interface sites of base plate 13 near the top 132 of base plate 13, therefore, the top 132 of base plate 13 is subject to driving of driving shaft 12 Power is larger, and the driving force that tail end 133 is subject to is less under the influence of flexible feet 14, so that the amplitude of fluctuation on top 132 Degree is more than the amplitude of fluctuation of tail end 133, and it is different with the grinding efficiency of tail end 133 to ultimately result in the top 132 of base plate 13, makes bottom The overall polishing of plate 13 is uneven, and impact is polished the polishing quality of surface of the work.
In order to ensure the polishing quality of sander 100, further driven shaft 15 is installed on base 13, and in driving shaft Actuating device is set between 12 and driven shaft 15.When driving shaft 12 rotates, drive actuating device rotation oscillating traverse motion, transmission Device so drive driven shaft 15 move.Under the collective effect of driving shaft 12 and driven shaft 15, the top 132 of base plate 13 and tail Every bit on end 133 reaches roughly the same movement locus, so that the polishing of each several part is identical in quality on base plate 13, improves It is polished the polishing quality on surface.
In conjunction with Fig. 2 to Fig. 4, driven shaft 15 is non-rotationally secured at the approximate centre position of base plate 13, and relatively actively Axle 12 be arranged in parallel.Driven shaft 15 is column, and its free end is sheathed to be provided with 5th bearing 151.It is provided with driving shaft 12 It is located axially at the second eccentric part 126 of the first eccentric part 124 top, the centrage X4 of this second eccentric part 126 is parallel to master The axis X 2 of moving axis 12, and it is spaced at regular intervals.Actuating device is rotatably connected on housing 10, and with the second eccentric part 126 connect.When driving shaft 12 rotates, actuating device is driven to rotate oscillating traverse motion by the second eccentric part 126.Actuating device Connect with driven shaft 15 simultaneously, rotated oscillating traverse motion and be transferred to driven shaft 15.In present embodiment, driven shaft 15 With base plate 13 non-eccentricity be connected, certainly, base plate 13 can also prejudicially be connected on driven shaft 15.
In present embodiment, the centrage X3 of the centrage X4 of the second eccentric part 126 and the first eccentric part 124 is with respect to master The axis X 2 of moving axis 12 is symmetrical arranged, so that on base plate 13 top 132 and tail end 133 direction of motion of each point and track be substantially Upper identical, the eccentric rotary inertia of the first eccentric part 124 and the second eccentric part 126 can be cancelled out each other simultaneously, reduces driving shaft 12 produced vibrations.Be arranged with 6th bearing 127 further on second eccentric part 126, actuating device pass through 6th bearing with Second eccentric part 126 coordinates.
Specifically, actuating device includes power transmission shaft 161 and the driving member 162 being relatively fixed connection, and power transmission shaft 161 is substantially vertical Directly in driving member 162.Power transmission shaft 161 is vertically arranged, and is arranged with two 7th bearings 163 that are adjacent and be arrangeding in parallel thereon.Shell The host cavity 101 being vertically arranged is formed with body 10, power transmission shaft 161 is rotatably mounted to receipts by two 7th bearings 163 In cavity volume 101.By being arranged side by side two 7th bearings 163, it can be avoided that power transmission shaft 161 one end stress and produce vibrations, carry The fixing stability of high power transmission shaft 161.
Driving member 162 is horizontally disposed with, and its two ends is respectively formed with symmetrically arranged first forked portion 164 and the second forked portion 165.Two the first forked portion 164 and the second forked portion 165 are all substantially u-shaped, wherein, the first forked portion 164 and 5th bearing 151 connect, and the second forked portion 165 and 6th bearing 127 connect, and the first forked portion 164 and the second forked portion 165 are respectively coated by 5th bearing 151 and 6th bearing 127 both sides.Driving shaft 12 rotate when, the second eccentric part 126 drive 6th bearing 127 around Axis X 2 eccentric rotary.By the second forked portion 165 and the cooperation of 6th bearing 127, make driving member 162 around power transmission shaft 161 Axis X 5 rotation reciprocally swinging, and the cooperation by the first forked portion 164 and 5th bearing 151, by the swing of driving member 162 Motion is transferred to driven shaft 15.
Thus, operationally, its base plate 13 is subject to the eccentric drive of driving shaft 12 and actuating device to sander 100 simultaneously Rotation reciprocally swinging drives, and is limited by the traction of two flexible feets 14 simultaneously, makes the Oscillation Amplitude of each several part on base plate 13 Generally essentially identical, so that the polishing quality of base plate 13 entirety and efficiency are all improved.
As shown in figure 1, the top 132 of the corresponding base plate 13 of housing 10 and tail end 133, there is relative front end 102 and rear end 103.During sander 100 work, the abrading article on base plate 13 acts on surface of the work, can produce dust.In order to prevent dust from flying Splash, in the rear end 103 of housing 10, dust collect plant 17 is installed.Motor 11 one end relative with motor drive shaft 111, is provided with dust suction Fan 18.Motor 11 horizontally set, motor drive shaft 111 is arranged in the front end 102 of housing 10, and dust absorption fan 18 is arranged on housing 10 Rear end 103 in, thus realize reduce sander 100 whole height while, the position of reasonable Arrangement dust absorption fan 18, from And dust can be conveniently realized.
As shown in Figures 2 and 3, specifically, the rear end 103 of housing 10 is formed with an exhaust chamber 104, this exhaust chamber 104 Both sides offer some vents 105.Motor 11 has the fan shaft 114 being oppositely arranged with motor drive shaft 111, and fan shaft 114 prolongs Stretch in exhaust chamber 104, dust absorption fan 18 is arranged on fan shaft 114, and be housed in exhaust chamber 104.
Dust collect plant 17 includes tubular dust-collecting box 171 and positioned at the cyclone separator 172 within dust-collecting box 171, dust-collecting box 171 are set in outside the exhaust chamber 104 of housing 10, are detachably connected on housing 10 by Elastic buckle 170 thereon.Rotation Wind separator 172 includes the circulation chamber 173 being vertically arranged, the tornadotron 174 being connected on circulation chamber 173, entrance 175 and outlet 176.Circulation chamber 173 includes two perpendicular to the antetheca 177 of motor drive shaft 111 and rear wall 178, and tornadotron 174 is two, parallel connection On rear wall 178, outlet 176 and entrance 175 are connected to the upper/lower terminal of antetheca 178.Outlet 176 be two, respectively with Tornadotron 174 is corresponding.Outlet 176 is specially horizontally disposed cylindrical shape, and one end extends in circulation chamber 173 and and tornadotron 174 is corresponding, and the other end extends in the exhaust chamber 104 of housing 10.
As shown in fig. 6, the bottom of base plate 13 offers dust groove 135, dust groove 135 can regular or irregular the bottom of at On plate 13 extend, and extend on base plate 13 in subregion such that it is able to as efficiently as possible collect base plate 13 work when The dust producing.The middle part of base plate 13, near tail end 133, also protruding upward have dust room 136.The bottom of dust room 136 and dirt Bits groove 135 connects, and its side is connected with the entrance 175 of dust collect plant 17 by housing 10.
In conjunction with shown in Fig. 3 and Fig. 7, during sander 100 work, motor 11 drives dust absorption fan 18 to rotate, and makes exhaust chamber 104 Interior formation negative pressure.Carry the air of dust, dust room 136 is entered by the dust groove 135 of base plate 13, then passes through whirlwind and divide Circulate room 173 from the entrance 175 of device 172;Enter tornadotron 174 from circulation chamber 173, by the effect of tornadotron 174, make The dust piling up of in the air is to the inwall of tornadotron 174, and final landing is to dust-collecting box 171;Clean air then passes through Mouth 176, flows into exhaust chamber 104, and discharges eventually through vent 105.
In sum, by by motor horizontally set, base plate arranging driven shaft, and between driven shaft and driving shaft Setting actuating device, and make actuating device make rotation oscillating traverse motion, by the cooperation with driven shaft, reciprocally swinging will be rotated Motion is transferred to base plate.Said structure, make while sander whole machine height reduction it is ensured that on base plate the movement locus of each point big Cause identical, and then improve polishing quality and grinding efficiency.
Specific embodiment two
In above-mentioned first embodiment, dust absorption fan 18 is arranged on motor 11 afterbody by sander 100, and by dust collect plant 17 rear ends 103 being connected to housing 10, make the lateral dimension of whole machine larger, the center of gravity of whole machine is more rearward.Therefore, when by sander 100 when being placed on workpiece, base plate 13 may place unstable it is easy to topple over.In addition, during operation, user will make whole Machine balances, and needs to pay bigger strength, thus allowing user to be easy to produce fatigue.
Shown as shown in Figure 8 and Figure 9, second embodiment of the present invention, provide a kind of low clearance sander 200, with Sander 100 in one embodiment is identical, including housing 20, the motor 21 that is housed in housing 20, driving shaft 22 and connect Base plate 23 on driving shaft 22.Motor 21 horizontally set, has the fan shaft 212 of motor drive shaft 211 positioned at front end and rear end, Dust absorption fan 24 is provided with fan shaft 212.The middle part of base plate 23 is provided with driven shaft 25, between driven shaft 25 and driving shaft 22 It is provided with actuating device 26.
In the lump with reference to Fig. 9 and Figure 10, in present embodiment, the dust collect plant 27 of sander 200 is divided into two parts, symmetrically It is arranged on the both sides of housing 20, be often partly provided with the outlet 271 for discharging cleaned air.Dust collect plant 27 adopts whirlwind Detached principle, the substantially same first embodiment of concrete structure, will not be described here.Difference is, housing 20 is provided with position In housing 20 afterbody exhaust chamber 201 and near base plate 23 dust passage 202, one end of dust passage 202 near base plate 23, The other end connects to exhaust chamber 201.Fan shaft 212 extends in exhaust chamber 201, and correspondingly, dust absorption fan 24 is housed in aerofluxuss In room 201.
Present embodiment is with the difference of first embodiment, and sander 200 has dust collect plant 27, and dust fills Put 27 to arrange laterally side by side with housing 20, positioned at housing 20 side.Because dust collect plant 27 is not directly connected to after housing 20 Side, and it is provided in the side of housing 20, the lateral length of whole machine therefore, will not be increased, make the length of whole machine be equal to housing 20 Lateral length.Using the sander 200 of this kind of structure, more compact structure, the center of gravity in the vertical direction of whole machine substantially with bottom Plate 23 is centrally located at same straight line, makes more stable, laborsaving during whole machine operation.
During sander 200 work, the air carrying dust passes through dust passage 202, initially enters exhaust chamber 201, is inhaling Under the promotion of dirt fan 24, enter in the whirlwind separator (not shown) of dust collect plant 27;The air carrying dust is passing through After dust collect plant 27, the dust of in the air is separated and collected in dust collect plant 27, and clean air then passes through dust collect plant 27 outlet 271 is discharged into the external world.
Dust collect plant 27 being arranged on housing 20 side, the overall transverse width of sander 200 certainly will being made to increase, thus leading Cause package size too big it has not been convenient to operate.In order to reduce the transverse width of whole machine, sander 200 is not provided with flexible feet, makes shell Body 20 afterbody is only capable of coating motor 21.Therefore, the width of housing 20 can reduce, so that housing 20 and dust collect plant 27 Overall width reduces.
For elasticity of substitution leg, in present embodiment, between the housing 20 of sander 200 and base plate 23, it is provided with ring Shape elastic component 28.Ring elastic parts 28 are arranged perpendicular to base plate 23, and upper end connects housing 20, lower end connecting bottom board 23.Driving shaft 22 drive base plate 23 eccentric rotary when, ring elastic parts 28 spacing under, make base plate 23 finally do rule track motion.
As shown in Figure 10, specifically, housing 20 offers the draw-in groove 202 being vertically arranged, the middle part of base plate 23 is convex Go out to be extended with annular protrusion 231.Ring elastic parts 28 are specially belt, are shaped as track type.The upper end of elastic component 28 is held in The draw-in groove 202 of housing 20, lower end is set on raised 231, and carries out banding by tight loop 29.By arranging ring elastic parts 28, make all to be drawn in entirely circumferential scope between base plate 23 and housing 20, the oscillating motion of base plate 23 is more regular, stable.
Specific embodiment three
As shown in Figure 11 to Figure 13, third embodiment of the invention discloses low clearance sander 300, including housing 30, Driving shaft 32 that the motor 31 being arranged in housing 30 is connected by bevel gear with motor 31, by driving shaft 32 drive driven Axle 33 and the base plate 34 being suspended on housing 30 lower section by driven shaft 33.Identical with embodiment one, motor 31 horizontally set, front Horizontally disposed motor drive shaft 311 is extended at end.Driving shaft 32 is vertically arranged, perpendicular to motor drive shaft 311, and by being separately mounted to On driving shaft 32 and motor drive shaft 311 in bevel gear wheel 321 and bevel pinion 312 engaged transmission.
Different from first embodiment are, driving shaft 32 is not produced with base plate 34 and is connected, and base plate 34 is connected to driven On axle 33.By being provided with actuating device 35 between driving shaft 32 and driven shaft 33, by actuating device 35, driving shaft 32 will rotate It is transferred to driven shaft 33.Parallel to driving shaft 32, it has axis Y1 to driven shaft 33, and top is rotatably connected to housing 30 On, end is connected to the center of base plate 34.Between the two ends of base plate 34 and housing 30, it is respectively symmetrically and is provided with two flexible feets 36.Base plate 34 is eccentric to be rotationally connected on driven shaft 33, when driven shaft 33 rotates, drives base plate 34 around driven shaft 33 Axis Y1 has the trend of eccentric rotary;Because base plate 34 is subject to traction and the restriction of flexible feet 36 simultaneously, make base plate 34 final The track type movement of formation rule.
Specifically, in present embodiment, actuating device 35 is specially a belt.Driving shaft 32 end is provided with the first belt wheel 322, driven shaft 33 is provided with and corresponding second belt wheel 331 of the first belt wheel 322.Actuating device 35 is sheathed to be supported on the first belt wheel 322 and second on belt wheel 331, thus the rotation of driving shaft 32 is transferred to driven shaft 33.It is eccentric that driven shaft 33 is provided with first Part 332, the first eccentric part 332 periphery is arranged with clutch shaft bearing 333, and base plate 34 is specifically connected on clutch shaft bearing 333.First is inclined Central member 332 is with respect to driven shaft 33 eccentric setting such that it is able to drive base plate 34 with respect to driven shaft 33 eccentric rotary.
By by motor 31 horizontally set, and the driven shaft 33 being connected to base plate 34 center is set.By actuating device 35 The rotation of driving shaft 32 is transferred to driven shaft 33, while reducing sander 300 whole height, makes each point on base plate 34 There are identical movement locus, realize stable grinding efficiency.
In order to stably be connected to driven shaft 33 on housing 30, host cavity 301 is provided with housing 30.Driven shaft 33 Top is provided with two second bearings 334 be arrangeding in parallel, and two second bearings 334 are fixed in host cavity 301.By arranging two Parallel second bearing 334, is prevented from driven shaft 33 and shakes, and improves the stability of whole machine work.
In addition, two second bearings 334 are horizontally disposed with, an in the vertical direction second bearing 334 above has There is upper surface 335, a underlying second bearing has lower surface 336, and upper surface 335 is parallel to lower surface 336.Motor 31 transverse horizontal settings, it has the base 313 that in the vertical direction is located at bottom.Wherein, in two second bearings 334, It is D1 that upper surface 335 arrives the distance between lower surface 336, and the upper surface 335 of second bearing 334 is arrived on the base 313 of motor 31 Distance is D2, and D2 is less than D1.
In present embodiment, driven shaft 33 is connected on housing 30 by sander 300 by two second bearings 334, and Make motor 31 base 313 arrive second bearing 334 distance be less than two second bearings 334 collective height.Driven in guarantee While axle 33 is stably fixed, reduce the height of whole machine such that it is able to reduce the vibrations producing during whole machine work, improve manipulator Sense.
Specific embodiment four
As shown in figure 14, four embodiment of the invention, discloses a kind of sander 400, structure and the 3rd embodiment Similar.This sander 400 includes housing 40, is housed in housing 40 and the motor 41 of horizontally set, the driving shaft being vertically arranged 42nd, the driven shaft 43 being rotatably connected on housing 40 and the eccentric base plate 44 being rotationally connected on driven shaft 43.From Moving axis 43 is connected to the middle part of base plate 44 parallel to driving shaft 42, its end.Between driving shaft 42 and driven shaft 43, it is provided with transmission Device 45, by actuating device 45, rotation is transferred to driven shaft 43 by driving shaft 42.When motor 41 drives driving shaft 42 to rotate, Driven shaft 43 is driven to rotate by actuating device 45.Elasticity between base plate 44 and housing 40 moves foot (not shown), driven shaft 43 There is axis Z1.Base plate 44, under the drive of driven shaft 43, has the trend of the axis Z1 eccentric rotary around driven shaft 43, but Under the traction and restriction of flexible feet, the track motion of final implementation rule.
It is outside different from the 3rd embodiment, the actuating device 45 of sander 400 is gear drive.Specifically , actuating device 45 includes drivewheel 46 and the driven pulley 47 engaging with drivewheel 46, and drivewheel 46 is arranged on driving shaft 42 End, driven pulley 47 is arranged on the top of driven shaft 43.When driving shaft 42 drives drivewheel 46 to rotate, by drivewheel 46 with from The engagement of driving wheel 47, final drive driven shaft 43 rotates.
Specific embodiment five
As shown in figure 15, the 5th embodiment of the present invention, discloses a kind of low clearance sander 500, with the 4th embodiment party Formula is identical, and this sander 500 includes housing 50, is housed in housing 50 and the motor 51 of horizontally set, the active being vertically arranged Axle 52, the base plate 53 being suspended on housing 50 lower section and the driven shaft 54 being connected on base plate 53.
Difference is:Base plate 53 simultaneously with driving shaft 52 and driven shaft 54 is eccentric rotationally connects.Driving shaft 52 During rotation, base plate 53, under the collective effect of driving shaft 52 and driven shaft 54, makees the track motion of rule.By setting simultaneously with The eccentric driving shaft 52 rotationally connecting of base plate 53 and driven shaft 54, make the movement locus of each point on base plate 53 essentially identical, So that the polishing quality of base plate 53 entirety is evenly, grinding efficiency is higher.
Specifically, base plate 53 has top 531 and tail end 532, and driving shaft 52 is connected to base plate 53 top 531, and it has Axis U1, end is connected with the first eccentric part 521, and the first eccentric part 521 has centrage U2, in the first eccentric part 521 periphery It is arranged with clutch shaft bearing 522, driving shaft 52 is connected on base plate 53 by clutch shaft bearing 522.Driven shaft 54 is connected to base plate 53 Tail end 532, it is to turn axle form, specifically includes superposed first paragraph 541 on vertical direction and be located at bottom second Section 542, first paragraph 541 has axis U3, and second segment 542 has axis U4.Second bearing 543 is arranged with first paragraph 541, leads to Cross second bearing 543 to be rotatably connected on housing 50.3rd bearing 544 is arranged with second segment 542, by 3rd bearing 544 are rotatably connected on base plate 53.
During sander 500 work, motor 51 drives driving shaft 52 to rotate, and driving shaft 52 is driven by the first eccentric part 521 Base plate 53 has the trend around axis U1 eccentric rotary;Because base plate 53 is subject to the first paragraph of eccentric setting on driven shaft 54 simultaneously 541 and the effect of second segment 542, make base plate 53 ultimately form the track motion of rule.Preferably, in present embodiment, first The eccentric throw of eccentric part 521 is the distance of the centrage U2 to the axis U1 of driving shaft 52 of the first eccentric part 521 on driving shaft 52, The eccentric throw of driven shaft 54 is axis the distance between U3, U4 of first paragraph 541 and second segment 542;Specifically, driven shaft 54 Eccentric throw is slightly larger than the eccentric throw of driving shaft 52, so that base plate 53 can smoothly be driven by driving shaft 52 and driven shaft 54 jointly Dynamic.On base plate 53, the movement locus of each point are slightly different, and on top 531, the track of each point is generally circular, and each on tail end 532 The track of point is then substantially oblong-shaped, and this kind of structure equally can improve polishing quality and the efficiency of base plate 53 entirety.
Specific embodiment six
As shown in figure 16, the 6th embodiment of the present invention, discloses a kind of low clearance sander 600, with the 5th embodiment party Formula is identical, and this sander 600 includes housing 60, is housed in housing 60 and the motor 61 of horizontally set, the active being vertically arranged Axle 62, driven shaft 63 and the base plate 64 being suspended on housing 60 lower section.Wherein, base plate 64 is simultaneously eccentric is rotationally connected to actively On axle 62 and driven shaft 63.Specifically, driving shaft 62 end is provided with the first eccentric part 621, and the first eccentric part 621 is provided with One bearing 622, base plate 64 is connected on driving shaft 62 by clutch shaft bearing 622.The end of driven shaft 63 is provided with the second eccentric part 631, the second eccentric part 621 is provided with second bearing 632, base plate 64 is connected with driven shaft 63 by second bearing 632.First Eccentric part 621 has the first eccentric throw with respect to driving shaft 62, and it is eccentric that the second eccentric part 631 has second with respect to driven shaft 63 Away from it is preferred that the first eccentric throw is equal with the second eccentric throw.
It is with the 5th embodiment difference, between driving shaft 62 and driven shaft 63, be further provided with actuating device 65. Driving shaft 62 rotate when, directly drive driven shaft 63 to rotate by actuating device 65 such that it is able to enable base plate 64 simultaneously by Driving shaft 62 and driven shaft 63 drive, and so that each point on base plate 64 can be synchronized with the movement, and so that base plate 64 is moved on the whole more steady, Improve polishing quality further.
In present embodiment, actuating device 65 specifically includes first gear 651 and second gear 652, and first gear 651 is pacified It is contained on driving shaft 62, second gear 652 is connected on driven shaft 63.When driving shaft 62 rotates, by first gear 651 and the The engagement of two gears 652, drives driven shaft 63 to rotate.
Obviously, actuating device 65 is not limited to above-mentioned gear drive or other kind of drive, and such as belt passes Dynamic, Chain conveyer etc..
Specific embodiment seven
As shown in figure 17, the 7th embodiment of the present invention, discloses a kind of low clearance sander 700, and this sander 700 wraps Include housing 70, be housed in housing 70 and the motor 71 of transverse horizontal setting, the driving shaft 72 being vertically arranged and be arranged on housing The base plate 73 of 70 lower sections.Wherein, base plate 73 is eccentric is rotationally connected on driving shaft 72, and so that driving shaft 72 is substantially connected to The center of base plate 73.It is provided with flexible feet 74 between base plate 73 and housing 70, spacing by flexible feet 74, make base plate 73 track motions ultimately forming rule.By arranging motor 71 transverse horizontal, the height of whole machine can be substantially reduced;With When, base plate 73 has geometric center, driving shaft 72 is connected in the geometric center of base plate 73 such that it is able to smoothly drive bottom Plate 73, makes the movement locus of each point on base plate 73 essentially identical, makes whole base plate 73 have higher polishing quality and efficiency.
It is provided with some flexible feets 74, the top of flexible feet 74 has in vertical direction between base plate 73 and housing 70 The upper summit 741 being located at peak.Motor 71 has the motor drive shaft 711 of horizontally set, and motor drive shaft 711 is coordinated with driving shaft 72, And drive driving shaft to rotate.Motor drive shaft 711 has axis 712, and axis 712 is horizontally disposed with.The bottom of base plate 73 has for pacifying The bottom surface 731 of dress abrading article (not shown).The vertical height between the bottom surface 731 of base plate 73 is arrived on the summit 741 of flexible feet 74 For H1, the vertical height that the axis 712 of motor 71 arrives between the bottom surface 731 of base plate 73 is H2, and wherein, H2 is less than H1, so as to Enough ensure that whole machine has relatively low vertical height, reduce the vibrations producing during work, be more convenient for operating.
Specifically, in present embodiment, the maximum outside diameter D of motor 71 is 32~45 millimeters, and height H1 is 36~50 millimeters, Height H2 is 36~50 millimeters.And make between D, H1, H2, to keep following ratio relation, wherein, the ratio between H1 and D is 0.8 Ratio between~1.6, H2 and D is the ratio between 0.8~1.6, H2 and H1 is 0.7~1.6.By arrangement above, can Make whole machine while ensureing low clearance, more reasonable structure, compact.
Specific embodiment eight
As shown in figure 18, the 8th embodiment of the present invention, discloses a kind of low clearance sander 800.With the 7th embodiment party Sander 700 structure in formula is similar, and this sander 800 includes housing 80, is housed in housing 80 and transverse horizontal setting Motor 81, the driving shaft 82 being vertically arranged and the base plate 83 being arranged on housing 80 lower section.Wherein, base plate 83 is eccentric rotationally connects It is connected on driving shaft 82, and make driving shaft 82 substantially be connected to the center of base plate 83.It is provided between base plate 83 and housing 80 Flexible feet (not shown), spacing by flexible feet, make base plate 83 ultimately form the track motion of rule.
In present embodiment, housing 80 has arc-shaped head 801, and driving shaft 82 is vertically arranged, and is formed with and leans in head 801 The cavity 802 of nearly driving shaft 82.Sander 800 has the switch 84 controlling whole machine operation and circuit board 85, switchs 84 points It is not electrically connected with circuit board 85 and motor 81.Switch 84 is arranged on the head 801 of housing 80, and circuit board 85 is then arranged on shell In the cavity 802 of body 80, and transverse horizontal setting.
By being arranged on switch 84 on the head 801 of housing 80, and circuit board 85 is arranged on the cavity 802 of housing 80 Interior, space can be made full use of, make compact integral structure, volume keeps less.
Specific embodiment nine
As shown in figure 19, ninth embodiment of the invention discloses low clearance sander 900, with the 3rd embodiment structure Similar, including housing 90, the motor 91 that is arranged in housing 90 be connected by bevel gear with motor 91 driving shaft 92, led Driven shaft 93 and the base plate 94 being suspended on housing 90 lower section by driven shaft 93 that moving axis 92 drives.Driving shaft 92 not with base plate 94 Produce and connect, base plate 94 is eccentric to be rotationally connected on driven shaft 93.By being provided with biography between driving shaft 92 and driven shaft 93 Dynamic device 95, by actuating device 95, rotation is transferred to driven shaft 93 by driving shaft 92.Driven shaft 93 be arranged in parallel by two Clutch shaft bearing 96 and second bearing 97, are rotatably fixed and are connected on housing 90.
It is with the difference of the 3rd embodiment, clutch shaft bearing 96 and second bearing 97 in the vertical direction interval set Put.The end of driving shaft 92 is provided with the first belt wheel 921, driven shaft 93 is provided with and corresponding second band of the first belt wheel 921 Wheel 931, and the second belt wheel 931 is arranged on driven shaft 93 on the section between clutch shaft bearing 96 and second bearing 97.Transmission Device 95 is specially belt, is supported by the first belt wheel 921 and the second belt wheel 931.
By by clutch shaft bearing 96 and second bearing 97 interval setting, making driven shaft 93 more stably be connected housing 90 On, it is not susceptible to rock.Simultaneously as actuating device 95 is connected driven shaft 93 is located at clutch shaft bearing 96 and second bearing 97 Between section, make power on driven shaft 93 for actuating device 95 start, uniformly shared by clutch shaft bearing 96 and second bearing 97, Further avoid driven shaft 93 in the case of by external force, shake, thus improving stability during whole machine work, carrying High life in application.
Above-mentioned all embodiments, disclose the various implementations of sander of the present invention.In above-mentioned embodiment, disclose The different driving mode of base plate, purpose is all to make each point on base plate have essentially identical movement locus, thus improving Grinding quality and efficiency.In addition, arranging motor transverse horizontal, the height of whole machine can be reduced, but the present invention is not limited to This, motor can also be vertically arranged.
In addition, in above-mentioned all embodiments, motor is high-speed motor, preferably direct current high-speed motor, and makes horse simultaneously The rotating speed reaching is maintained between 15000~25000rpm.Using high-speed motor, the volume that excessive speeds reduce motor can be led to, And then reduce the volume of whole product.Meanwhile, high-speed motor drives dust absorption fan high-speed rotation, it is possible to increase dust collection efficiency.
It may be noted that in the respective embodiments described above, the projection in the horizontal plane of the center of gravity of the whole machine of sander of the present invention all falls Such that it is able to ensure operationally within the profile of base plate, whole machine is easier to balance, and reason is easy to operate, and makes operator It is difficult to feel fatigue.
The present invention is not limited to the embodiment in previous embodiment, and those skilled in the art are in the technology of the present invention marrow It is also possible under enlightenment make other changes, but as long as its function of realizing is same or similar with the present invention, all should be covered by this In bright protection domain.

Claims (8)

1. a kind of grinding power tool, including:
Housing;
Motor, is horizontally installed in described housing, it has motor drive shaft;
Base plate, is arranged on below described housing, for connecting abrading article;And
Driving shaft, rotary motion under the drive of described motor drive shaft, and with described base plate interval setting;
It is characterized in that:Described driving shaft is vertically arranged, and described base plate is provided with driven shaft, and described driven shaft is parallel to described Driving shaft, one end of described driven shaft can be rotationally connected with described housing, and the other end and described base plate being capable of eccentric rotary Ground connects, and is provided with actuating device between described driving shaft and described driven shaft, when described driving shaft rotates, by described transmission Device drives described driven shaft to rotate, and then makes described base plate make the track type movement of rule.
2. grinding power tool as claimed in claim 1 it is characterised in that:Described driven shaft passes through mounted thereto two Bearing connects on the housing.
3. grinding power tool as claimed in claim 2 it is characterised in that:Described two bearing spacer settings, described transmission Device is connected to described driven shaft and is located on the section between described two bearings.
4. grinding power tool as claimed in claim 2 it is characterised in that:Described motor has in the vertical direction and is located at The base of lower section, described two bearings have in the vertical direction and are located at the upper surface of the top and the following table being located at bottom Face, the vertical height of base to the described upper surface of described motor is less than the vertical height between described upper surface and described lower surface Degree.
5. grinding power tool as claimed in claim 2 it is characterised in that:Described housing is provided with host cavity, described two What bearing was parallel is arranged on described collecting intracavity.
6. grinding power tool as claimed in claim 1 it is characterised in that:Between the two ends of described base plate and described housing, It is respectively symmetrically and be provided with two flexible feets.
7. grinding power tool as claimed in claim 1 it is characterised in that:First eccentric part is provided with described driven shaft, Described first eccentric part is with respect to described driven shaft eccentric setting such that it is able to drive described base plate inclined with respect to described driven shaft The heart rotates.
8. grinding power tool as claimed in claim 1 it is characterised in that:Described actuating device can be belt transmission, tooth One of wheel transmission, Chain conveyer.
CN201210278723.9A 2012-08-07 2012-08-07 Grinding power tool Active CN103567842B (en)

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CN201210278723.9A CN103567842B (en) 2012-08-07 2012-08-07 Grinding power tool
PCT/CN2013/080988 WO2014023229A1 (en) 2012-08-07 2013-08-07 Grinding power tool

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Publication number Priority date Publication date Assignee Title
JP2017209738A (en) * 2016-05-23 2017-11-30 リョービ株式会社 Motor-driven polishing device
CN107243830A (en) * 2017-08-04 2017-10-13 固高派动(东莞)智能科技有限公司 A kind of high-speed plane vibrating mechanism
CN113523980B (en) * 2020-04-15 2023-04-07 南京泉峰科技有限公司 Grinding machine

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DE19732001A1 (en) * 1997-07-25 1999-01-28 Festo Tooltechnic Gmbh & Co Drive device for a tool carrier of machine tools
CN1406168A (en) * 2000-12-30 2003-03-26 罗伯特·博施有限公司 Manual machine tool
CN1754653A (en) * 2004-09-29 2006-04-05 罗伯特·博世有限公司 Motorised hand-held grinding tool, especially battery-driven motorised hand-held grinding tool
CN101134295A (en) * 2006-08-31 2008-03-05 株式会社牧田 Sander
EP2072183A1 (en) * 2007-12-22 2009-06-24 J. Wagner GmbH Surface grinding machine
CN101663130A (en) * 2007-04-19 2010-03-03 罗伯特·博世有限公司 Motor-driven machine tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732001A1 (en) * 1997-07-25 1999-01-28 Festo Tooltechnic Gmbh & Co Drive device for a tool carrier of machine tools
CN1406168A (en) * 2000-12-30 2003-03-26 罗伯特·博施有限公司 Manual machine tool
CN1754653A (en) * 2004-09-29 2006-04-05 罗伯特·博世有限公司 Motorised hand-held grinding tool, especially battery-driven motorised hand-held grinding tool
CN101134295A (en) * 2006-08-31 2008-03-05 株式会社牧田 Sander
CN101663130A (en) * 2007-04-19 2010-03-03 罗伯特·博世有限公司 Motor-driven machine tool
EP2072183A1 (en) * 2007-12-22 2009-06-24 J. Wagner GmbH Surface grinding machine

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