WO2014023229A1 - 磨削动力工具 - Google Patents

磨削动力工具 Download PDF

Info

Publication number
WO2014023229A1
WO2014023229A1 PCT/CN2013/080988 CN2013080988W WO2014023229A1 WO 2014023229 A1 WO2014023229 A1 WO 2014023229A1 CN 2013080988 W CN2013080988 W CN 2013080988W WO 2014023229 A1 WO2014023229 A1 WO 2014023229A1
Authority
WO
WIPO (PCT)
Prior art keywords
bottom plate
shaft
motor
driven shaft
disposed
Prior art date
Application number
PCT/CN2013/080988
Other languages
English (en)
French (fr)
Inventor
张士松
吴宇
徐静涛
钟红风
Original Assignee
苏州宝时得电动工具有限公司
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.)
Filing date
Publication date
Priority claimed from CN201210278723.9A external-priority patent/CN103567842B/zh
Priority claimed from CN201210278734.7A external-priority patent/CN103567846B/zh
Priority claimed from CN201210278641.4A external-priority patent/CN103567841B/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2014023229A1 publication Critical patent/WO2014023229A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor

Definitions

  • the invention relates to a power tool, in particular to a hand-held grinding power tool.
  • Sanding machine is a hand-held grinding power tool commonly used in the modern wood industry. It is mainly used for sanding paper or sand cloth mounted on the sanding machine floor for high-speed track swinging. Sand for wood, metal, glass, plastic, etc. Light work, so it is widely used in building decoration, furniture manufacturing, automotive, shipbuilding and other industries.
  • the electric sander has the characteristics of convenient operation, safety and reliability. It saves time and effort while achieving a smooth, flat surface.
  • sanders There are two types of sanders, namely, a flat swing sander (referred to as sand) and a disc track sander (abbreviated as round sand), and the motion paths of the bottom plates are different.
  • sand flat swing sander
  • round sand disc track sander
  • An oscillating sander is disclosed, for example, in Chinese Patent Application No. CN101134295A. It includes a vertically disposed motor with an eccentric member mounted at its end, the centerline of the eccentric member being eccentrically disposed (i.e., spaced apart) relative to the axis of the motor shaft.
  • the bottom plate is connected to the motor shaft through an eccentric member, and an elastic leg 24 is disposed between the four corners of the bottom plate and the housing.
  • the eccentric member drives the bottom plate to rotate eccentrically about the axis of the motor shaft, and at the same time, due to the traction limitation of the four elastic legs 24, the bottom plate performs regular orbital motion.
  • the bottom plate is usually set large. Since there is only one driving point between the motor shaft and the bottom plate in the middle of the bottom plate, the friction efficiency in the middle portion and the surrounding portion of the bottom plate may be different during operation, resulting in unevenness of the surface to be ground. In addition, since the motor is vertically arranged, the height of the whole machine is too large, so that the vibration generated during operation is large, and the operator's arm is easily fatigued, which affects the operation feeling.
  • a grinding power tool comprising: a housing; a motor disposed in the housing; a bottom plate disposed under the housing for connecting the grinding machine a rotating shaft; a driving shaft, which is rotated by the motor, and one end of the driving shaft The motor is mated, and the other end extends out of the housing and is eccentrically coupled to the bottom plate to cause the bottom plate to perform a regular orbital motion.
  • a driven shaft is disposed on the bottom plate, and a transmission device is disposed between the driving shaft and the driven shaft. When the driving shaft rotates, the driven shaft reciprocates the swinging motion. .
  • the transmission includes a drive shaft rotatably coupled to the housing and a transmission member fixedly coupled to the drive shaft, the drive shaft being parallel to the drive shaft.
  • the driving shaft is mounted with a first eccentric member that is coupled to the bottom plate and a second eccentric member that is coupled to the transmission member, and the center lines of the first and second eccentric members are opposite to the center
  • the axis of the drive shaft is eccentrically set.
  • the two ends of the transmission member are respectively formed with a first fork portion and a second fork portion, the first fork portion is mated with the second eccentric member, and the second fork portion is The driven shaft is mated.
  • the centerlines of the first and second eccentric members are symmetrically disposed with respect to an axis of the drive shaft.
  • a position at which the driving shaft is mated with the bottom plate is located at a front end of the bottom plate, and at least two elastic legs are disposed between the tail end of the bottom plate and the housing.
  • the movement points of the three points on the bottom plate and the two elastic legs and the driving shaft respectively are the same.
  • a line connecting the three points of the two elastic legs and the driving shaft on the bottom plate forms an isosceles triangle, and the point at which the driven shaft is mated with the bottom plate is located at the two The center line of the elastic legs is connected.
  • the motor is disposed laterally.
  • the grinding power tool has a center of gravity as a whole, the projection of its center of gravity in the horizontal plane being within the contour of the bottom plate.
  • a front portion of the motor is mounted with a motor shaft that cooperates with the drive shaft, and a rear portion of the motor is mounted with a dust suction fan.
  • a dust collecting device is installed at the tail of the casing, and the dust collecting device includes a cyclone separator that is close to the dust collecting fan.
  • the dust collecting device is divided into two parts, which are respectively located at two sides of the casing.
  • the driving shaft drives the driven shaft to rotate at the same time.
  • the driving shaft and the driven shaft act on the bottom plate at the same time, so that the moving trajectories of the points on the bottom plate are substantially the same, thereby improving the grinding quality and efficiency.
  • Another object of the present invention is to provide a grinding power tool capable of transporting points on a floor
  • the trajectories are roughly the same to improve the quality and efficiency of the grinding.
  • a grinding power tool comprising: a housing; a motor disposed in the housing; a bottom plate disposed under the housing for connecting the grinding machine a scraping member; and a driving shaft, which is rotated by the motor and spaced apart from the bottom plate.
  • the bottom plate is mounted with a driven shaft, one end of the driven shaft is rotatably coupled to the housing, and the other end is eccentrically coupled to the bottom plate, the drive shaft and the driven
  • a transmission device is disposed between the shafts, and when the driving shaft rotates, the driven shaft is rotated by the transmission device, thereby performing regular orbital motion of the bottom plate.
  • the driven shaft is coupled to the housing by two bearings mounted thereon.
  • the two bearings are spaced apart and the transmission is coupled to the section of the driven shaft between the two bearings.
  • the motor has a bottom edge located at a lowermost position in a vertical direction, and the two bearings have an upper surface located at an uppermost position in a vertical direction and a lower surface at a lowermost position, a bottom edge of the motor A vertical height to the upper surface is less than a vertical height between the upper surface and the lower surface.
  • the housing is provided with a receiving cavity, and the two bearings are installed in parallel in the receiving cavity.
  • two elastic legs are symmetrically disposed between the two ends of the bottom plate and the housing.
  • the drive shaft is vertically disposed, and the driven shaft is parallel to the drive shaft.
  • a first eccentric member is mounted on the driven shaft, and the first eccentric member is eccentrically disposed with respect to the driven shaft, so that the bottom plate can be driven to rotate eccentrically with respect to the driven shaft.
  • the transmission device may be one of a belt drive, a gear drive, and a chain drive.
  • the motor is horizontally disposed.
  • the driving shaft is not connected to the bottom plate, but is connected to the driven shaft, so that the rotation of the driving shaft is transmitted to the driven shaft through the transmission, and Finally, the bottom plate is eccentrically rotated.
  • the trajectories of the points on the bottom plate of the grinding power tool are substantially the same, thereby improving the quality and efficiency of the grinding.
  • Another object of the present invention is to provide a grinding power tool which is capable of facilitating the elimination of dust while reducing the height of the machine.
  • a grinding power tool comprising: a housing; a motor disposed laterally in the housing; and a bottom plate disposed under the housing
  • the driving shaft is rotated by the motor, one end of the driving shaft is coupled with the motor, and the other end extends out of the housing and is eccentrically connected to the bottom plate
  • the bottom plate is subjected to regular orbital motion; wherein the front end of the motor has a motor shaft that is coupled to the drive shaft, and the rear end of the motor is mounted with a dust suction fan.
  • a dust collecting device is installed at a tail portion of the casing, and the dust collecting device includes a cyclone separator that is close to the dust collecting fan.
  • the dust collecting device is divided into two parts, which are respectively located at two sides of the casing.
  • the casing tail portion is provided with an exhaust chamber
  • the motor has a fan shaft extending into the exhaust chamber
  • the dust suction fan is housed in the exhaust chamber and mounted on the fan shaft.
  • the housing is formed with a dust collecting passage
  • the dust collecting device has an outlet for discharging air to the outside, and the air carrying the dust passes through the dust collecting passage, first enters the exhaust chamber, and then passes through The dust collecting device is discharged from the outlet to the outside.
  • an annular elastic member is disposed between the housing and the bottom plate.
  • the housing is provided with a card slot, and the central portion of the bottom plate protrudes upwardly and has an annular protrusion.
  • the upper end of the elastic member is connected in the card slot, and the lower end of the elastic member is sleeved on the sleeve.
  • the annular projection is on.
  • the bottom plate is provided with a driven shaft, and a transmission device is disposed between the driving shaft and the driven shaft.
  • the transmission device when the driving shaft rotates, the transmission device is driven to perform a rotary reciprocating oscillating motion, and the transmission device transmits a rotating reciprocating oscillating motion to the driven shaft.
  • the driving shaft is mounted with a first eccentric member that is coupled to the bottom plate and a second eccentric member that is coupled to the transmission member, and the center lines of the first and second eccentric members are opposite to the center
  • the axis of the drive shaft is eccentrically set.
  • the front end of the motor is matched with the driving shaft, and the rear end is connected with a dust suction fan to make the position of the dust collecting fan more reasonable, thereby shortening the length of the dust collecting passage, making the whole machine smaller in size and lower in cost.
  • FIG. 1 is a schematic perspective view of a sander in a first embodiment of the present invention.
  • Figure 2 is a perspective view showing the sander housing shown in Figure 1 removed halfway.
  • Figure 3 is a schematic cross-sectional view of the sander of Figure 1 in a vertical direction.
  • FIG. 4 is a schematic cross-sectional view of the sander of FIG. 1 in a horizontal direction.
  • Figure 5 is a perspective exploded view of the sander shown in Figure 1.
  • Figure 6 is a perspective view of the sander shown in Figure 1 as viewed from another direction.
  • Figure 7 is a schematic cross-sectional view of the sander of Figure 1 taken along the dust collecting device.
  • Figure 8 is a perspective view of a sander in accordance with a second embodiment of the present invention.
  • Figure 9 is a perspective view showing the housing of the sander shown in Figure 8 removed halfway.
  • Figure 10 is a schematic cross-sectional view of the sander of Figure 8 in a vertical direction.
  • Figure 11 is a perspective view of a sander in a third embodiment of the present invention.
  • Figure 12 is a perspective view showing the housing of the sander shown in Figure 11 removed halfway.
  • Figure 13 is a schematic cross-sectional view of the sander of Figure 11 in a vertical direction.
  • Figure 14 is a schematic view showing the structure of a sander in a fourth embodiment of the present invention.
  • Figure 15 is a schematic view showing the structure of a sander in a fifth embodiment of the present invention.
  • Figure 16 is a schematic view showing the structure of a sander in a sixth embodiment of the present invention.
  • Figure 17 is a schematic view showing the structure of a sander in a seventh embodiment of the present invention.
  • Figure 18 is a schematic view showing the structure of a sander in an eighth embodiment of the present invention.
  • Figure 19 is a schematic view showing the structure of a sander according to a ninth embodiment of the present invention.
  • a grinding power tool is specifically a low-profile flat swing sander 100.
  • the sander 100 includes a housing 10, a motor 11 housed in the housing 10, a drive shaft 12 extending from the housing 10, a bottom plate 13 coupled to the drive shaft 12, and a housing 11 and a bottom plate 13
  • the elastic leg 14 is between.
  • the bottom plate 13 is eccentrically rotated by the driving shaft 12, and at the same time, under the restriction of the elastic legs 14, the bottom plate 13 finally performs regular orbital motion.
  • the housing 10 is generally small in size and shaped like a mouse, and can be easily held with one hand.
  • the motor 11 is disposed laterally and housed in the housing 10.
  • the motor 11 is laterally disposed to lower the height of the complete machine, and has a motor shaft 111 on which a first bearing 112 is mounted, which is supported by the first bearing 112 in the housing 10.
  • a small bevel pinion 113 and a large bevel gear 121 are provided to transmit the high speed rotation of the motor shaft 111 to the low speed rotation of the drive shaft 12.
  • the bottom plate 13 has a substantially triangular shape and has a bottom surface 131 on which a grinding member such as a sandpaper or an abrasive cloth is replaceably connected by a Velcro or the like. In operation, the abrading member acts on the surface of the workpiece under the driving of the bottom plate 13 for sanding treatment.
  • the bottom plate 13 has a pointed end 132 and a trailing end 133 opposite the tip 132, the tip of which is located just on the centerline XI of the trailing end 133.
  • the bottom plate 13 is suspended below the casing 10 by elastic legs 14. In the present embodiment, two elastic legs 14 are provided.
  • the two resilient legs 14 are adjacent the trailing end 133 of the bottom plate 13 and are disposed symmetrically with respect to the centerline XI of the trailing end 133.
  • the mating position of the drive shaft 12 and the bottom plate 13 is close to the top end 132 of the bottom plate 13 and is located on the center line XI of the trailing end 133. Therefore, when the sander 100 is in operation, the driving shaft 12 drives the bottom plate 13 to perform a rotary motion, but due to the limitation and dragging of the two elastic legs 14, the bottom plate 13 finally performs a regular orbital motion.
  • the drive shaft 12 is rotatably disposed in the casing 10 through the second bearing 122 and the third bearing 123 which are disposed in parallel, and has an axis X2 substantially perpendicular to the bottom plate 13.
  • a first eccentric member 124 is mounted at the end of the drive shaft 12, and the first eccentric member 124 has a center line X3 which is parallel to the axis X2 of the drive shaft 12.
  • the bottom plate 13 is provided with a receiving seat 134 near the top end 132, and the first eccentric member 124 on the driving shaft 12 is received in the receiving seat 134.
  • the fourth bearing 125 is further sleeved on the outside of the first eccentric member 124. When assembled, the fourth bearing 125 is just mounted in the receiving seat 134, so that the bottom plate 13 can be eccentrically connected to the driving shaft 12.
  • the motor shaft 111 transmits the rotational deceleration to the drive shaft 12 by the cooperation of the bevel pinion 113 and the bevel pinion 121.
  • the driving shaft 12 rotates
  • the bottom plate 13 is eccentrically rotated about the axis X2 by the first eccentric member 124, and finally the bottom plate 13 finally outputs a regular orbital motion under the restriction of the two elastic legs 14.
  • the mating position of the driving shaft 12 and the bottom plate 13 is close to the top end 132 of the bottom plate 13, the top end 132 of the bottom plate 13 is driven by the driving force of the driving shaft 12, and the driving force of the tail end 133 is received by the elastic leg 14.
  • the influence is small, so that the swinging amplitude of the top end 132 is larger than the swinging amplitude of the trailing end 133, and finally the grinding efficiency of the top end 132 and the trailing end 133 of the bottom plate 13 is different, so that the bottom plate 13 is not uniformly ground, which affects the workpiece to be polished.
  • the quality of the surface is polished.
  • a driven shaft 15 is further mounted on the bottom plate 13, and a transmission 16 is disposed between the driving shaft 12 and the driven shaft 15.
  • the transmission device 16 rotates the reciprocating oscillating motion, and the transmission device 16 drives the driven shaft 15 to move.
  • each point on the top end 132 and the trailing end 133 of the bottom plate 13 reaches substantially the same trajectory, so that the grinding quality of each part of the bottom plate 13 is the same, and the polished surface is improved. The quality of the grinding.
  • the driven shaft 15 is non-rotatably fixed to a substantially central position of the bottom plate 13 and disposed in parallel with the drive shaft 12.
  • the driven shaft 15 has a columnar shape, and a fifth bearing 151 is mounted on the free end thereof.
  • the driving shaft 12 is mounted with a second eccentric member 126 axially above the first eccentric member 124.
  • the center line X4 of the second eccentric member 126 is parallel to the axis X2 of the driving shaft 12 and is spaced apart. A certain distance.
  • the transmission 16 is rotatably coupled to the housing 10 and mates with the second eccentric 126. When the driving shaft 12 rotates, the second eccentric member 126 drives the transmission device 16 to rotate the reciprocating oscillating motion.
  • the transmission 16 is simultaneously coupled to the driven shaft 15 to transmit its rotational reciprocating oscillating motion to the driven shaft 15.
  • the driven shaft 15 and the bottom plate 13 are non-eccentrically connected.
  • the bottom plate 13 may be eccentrically coupled to the driven shaft 15.
  • the center line X4 of the second eccentric member 126 and the center line X3 of the first eccentric member 124 are symmetrically disposed with respect to the axis X2 of the driving shaft 12, thereby moving the points on the top end 132 and the tail end 133 of the bottom plate 13.
  • the direction and the trajectory are substantially the same, and the eccentric moment of inertia of the first eccentric member 124 and the second eccentric member 126 can cancel each other, reducing the vibration generated by the drive shaft 12.
  • the second eccentric member 126 is further sleeved with a sixth bearing 127, and the transmission 16 is coupled to the second eccentric member 126 by a sixth bearing.
  • the transmission 16 includes a relatively fixedly coupled drive shaft 161 and transmission member 162 that is generally perpendicular to the transmission member 162.
  • the drive shaft 161 is vertically disposed, and is provided with two seventh bearings 163 which are adjacent and arranged in parallel.
  • the housing 10 is formed with a vertically disposed receiving cavity 101, and the transmission shaft 161 is rotatably fixed in the receiving cavity 101 by the two seventh bearings 163.
  • the transmission member 162 is horizontally disposed, and has a first fork portion 164 and a second fork portion 165 which are symmetrically disposed at both ends thereof.
  • the two first fork portions 164 and the second fork portion 165 are both substantially U-shaped, wherein the first fork portion 164 is mated with the fifth bearing 151, and the second fork portion 165 is coupled with the sixth bearing 127
  • the first fork portion 164 and the second fork portion 165 are respectively wrapped around the fifth bearing 151 and the sixth bearing 127.
  • the second eccentric member 126 drives the sixth bearing 127 to rotate eccentrically about the axis X2.
  • the transmission member 162 is rotated and reciprocated about the axis X5 of the transmission shaft 161, and the transmission member 162 is engaged by the cooperation of the first fork portion 164 and the fifth bearing 151.
  • the oscillating motion is transmitted to the driven shaft 15.
  • the bottom plate 13 is simultaneously driven by the eccentric drive of the drive shaft 12 and the rotary reciprocating oscillation of the transmission device 16, and is simultaneously restricted by the traction of the two elastic legs 14, so that the parts of the bottom plate 13 are The amplitude of the vibration is substantially the same, so that the quality and efficiency of the entire bottom plate 13 are improved.
  • the housing 10 has a top end 132 and a rear end 133 corresponding to the bottom plate 13, and has opposite front ends 102 and rear ends 103.
  • the grinding member on the bottom plate 13 acts on the surface of the workpiece to generate dust.
  • a dust collecting device is installed at the rear end 103 of the casing 10.
  • a dust suction fan 18 is attached to one end of the motor 11 opposite to the motor shaft 111.
  • the motor 11 is disposed laterally, the motor shaft 111 is disposed in the front end 102 of the casing 10, and the dust suction fan 18 is disposed in the rear end 103 of the casing 10, so that the dust is properly arranged while the overall height of the sander 100 is lowered.
  • the position of the fan 18 makes it easy to collect dust.
  • the rear end 103 of the casing 10 is formed with an exhaust chamber 104, and a plurality of vents 105 are formed at both sides of the exhaust chamber 104.
  • the motor 11 has a fan shaft 114 disposed opposite the motor shaft 111.
  • the fan shaft 114 extends into the discharge chamber 104.
  • the suction fan 18 is mounted on the fan shaft 114 and housed in the discharge chamber 104.
  • the dust collecting device 17 includes a cylindrical dust collecting box 171 and a cyclone separator 172 located inside the dust collecting box 171.
  • the dust collecting box 171 is sleeved outside the exhaust chamber 104 of the casing 10, and the elastic buckle 170 thereon can be It is detachably connected to the casing 10.
  • the cyclone separator 172 includes a vertically disposed flow-through chamber 173, a cyclone tube 174 connected to the flow-through chamber 173, an inlet 175, and an outlet 176.
  • the flow chamber 173 includes two front walls 177 and a rear wall 178 which are perpendicular to the motor shaft 111.
  • the two air circulation ducts 174 are connected in parallel to the rear wall 178.
  • the outlet 176 and the inlet 175 are respectively connected to the upper and lower sides of the front wall 178. end. There are two outlets 176, corresponding to the cyclone 174, respectively.
  • the outlet 176 is specifically cylindrical in shape, one end extending into the flow chamber 173 and corresponding to the cyclone 174, and the other end extending into the discharge chamber 104 of the casing 10.
  • the bottom of the bottom plate 13 is provided with a dust groove 135 which can be regularly or irregularly extended on the bottom plate 13 and extended to a partial area on the bottom plate 13, thereby being as efficient as possible.
  • the dust generated when the bottom plate 13 is working is collected.
  • the middle portion of the bottom plate 13, near the trailing end 133, also protrudes upwardly from the dust chamber 136.
  • the bottom of the dust chamber 136 is in communication with the dust chute 135, and one side thereof communicates with the inlet 175 of the dust collecting device 17 through the casing 10.
  • the motor 11 drives the dust suction fan 18 to rotate, thereby forming a negative pressure in the discharge chamber 104.
  • the dust-carrying air enters the dust chamber 136 through the dust chute 135 of the bottom plate 13, and then enters the flow chamber 173 through the inlet 175 of the cyclone 172; enters the cyclone 174 from the flow chamber 173, and passes through the cyclone 174.
  • the dust in the air is accumulated on the inner wall of the cyclone tube 174, and finally falls into the dust box 171; the clean air passes through the outlet 176, flows into the exhaust chamber 104, and is finally discharged through the vent 105.
  • a driven shaft is arranged on the bottom plate, and a transmission device is arranged between the driven shaft and the driving shaft, and the transmission device is rotated and reciprocatingly oscillated, through cooperation with the driven shaft. , the rotary reciprocating oscillating motion is transmitted to the bottom plate.
  • the above structure makes the height of the sander reduce the height of the whole machine, and ensures that the movement trajectories of the points on the bottom plate are substantially the same, thereby improving the grinding quality and playing Grinding efficiency.
  • the sander 100 sets the dust suction fan 18 at the tail of the motor 11, and connects the dust collecting device 17 to the rear end 103 of the casing 10, so that the lateral dimension of the whole machine is large, and the whole machine is The center of gravity is later. Therefore, when the sander 100 is placed on the workpiece, the bottom plate 13 may be placed unstable and it is easy to fall. In addition, during operation, the user needs to exert more strength to balance the whole machine, so that the user is prone to fatigue.
  • a second embodiment of the present invention provides a low-height sander 200, which is the same as the sander 100 of the first embodiment, and includes a casing 20 and is housed in a casing.
  • the motor 21 in the body 20, the drive shaft 22 and the bottom plate 23 connected to the drive shaft 22.
  • the motor 21 is laterally disposed, and has a motor shaft 211 at the front end and a fan shaft 212 at the rear end, and a dust suction fan 24 is mounted on the fan shaft 212.
  • a driven shaft 25 is mounted in the middle of the bottom plate 23, and a transmission 26 is disposed between the driven shaft 25 and the drive shaft 22.
  • the dust collecting device 27 of the sander 200 is divided into two parts, symmetrically disposed on both sides of the casing 20, and each portion is provided with an outlet for discharging clean air. 271.
  • the dust collecting device 27 uses the principle of cyclone separation, and the specific structure is basically the same as that of the first embodiment, and details are not described herein again.
  • the difference is that the casing 20 is provided with an exhaust chamber 201 at the rear of the casing 20 and a dust collecting passage 202 near the bottom plate 23.
  • One end of the dust collecting passage 202 is adjacent to the bottom plate 23, and the other end is connected to the exhaust chamber 201.
  • the fan shaft 212 extends into the discharge chamber 201, and accordingly, the suction fan 24 is housed in the discharge chamber 201.
  • the present embodiment is different from the first embodiment in that the sander 200 has a dust collecting device 27 which is disposed side by side with the casing 20 and is located on the side of the casing 20. Since the dust collecting device 27 is not directly connected to the rear of the casing 20, but is disposed at one side of the casing 20, the lateral length of the whole machine is not increased, so that the length of the whole machine is equal to the lateral length of the casing 20.
  • the sander 200 of this structure has a more compact structure, and the center of gravity of the whole machine is substantially in line with the center of the bottom plate 23 in the vertical direction, so that the whole machine is more stable and labor-saving during operation.
  • the dust-carrying air passes through the dust collecting passage 202, first enters the exhaust chamber 201, and is driven by the dust collecting fan 24 to enter the cyclone separator (not shown) of the dust collecting device 27. After the dust-carrying air passes through the dust collecting device 27, the dust in the air is separated and collected in the dust collecting device 27, and the clean air is discharged to the outside through the outlet 271 of the dust collecting device 27.
  • the dust collecting device 27 is disposed on the side of the casing 20, which tends to increase the overall lateral width of the sander 200, thereby causing the overall size to be too large and inconvenient to operate.
  • the optical machine 200 is not provided with an elastic leg so that the tail portion of the casing 20 can only cover the motor 21. Therefore, the width of the casing 20 can be reduced, thereby reducing the overall width of the casing 20 and the dust collecting device 27.
  • annular elastic member 28 is disposed between the casing 20 of the sander 200 and the bottom plate 23.
  • the annular elastic member 28 is disposed perpendicular to the bottom plate 23, and the upper end is connected to the casing 20 and the lower end is connected to the bottom plate 23.
  • the housing 20 is provided with a vertically disposed slot 202, and a central portion of the bottom plate 23 protrudes upward to extend an annular protrusion 231.
  • the annular elastic member 28 is specifically a belt and has a runway shape. The upper end of the elastic member 28 is clamped to the slot 202 of the housing 20, and the lower end is sleeved on the protrusion 231 and tightened by the fastening jaw 29.
  • the bottom plate 23 and the casing 20 are both pulled over the entire circumferential direction, and the oscillating motion of the bottom plate 23 is more regular and stable.
  • a third embodiment of the present invention discloses a low-height sander 300 including a housing 30, a motor 31 disposed in the housing 30, and a drive shaft 32 coupled to the motor 31 via a bevel gear.
  • the driven shaft 33 driven by the driving shaft 32 and the bottom plate 34 suspended by the driven shaft 33 below the casing 30.
  • the motor 31 is disposed laterally, and the front end extends out of the horizontally disposed motor shaft 311.
  • the drive shaft 32 is vertically disposed perpendicular to the motor shaft 3 11 and is meshed and driven by the bevel gear 321 and the bevel pinion 312 which are respectively mounted on the main shaft 32 and the motor shaft 31.
  • the difference from the first embodiment is that the drive shaft 32 is not connected to the bottom plate 34, and the bottom plate 34 is coupled to the driven shaft 33.
  • the drive shaft 35 is provided between the drive shaft 32 and the driven shaft 33, and the drive shaft 35 transmits the rotation to the driven shaft 33.
  • the driven shaft 33 is parallel to the drive shaft 32 and has an axis Y 1 , the top end being rotatably coupled to the housing 30 and the end being coupled to the center of the bottom plate 34.
  • Two elastic legs 36 are symmetrically disposed between the two ends of the bottom plate 34 and the housing 30, respectively.
  • the bottom plate 34 is eccentrically rotatably coupled to the driven shaft 33. When the driven shaft 33 rotates, the bottom plate 34 is eccentrically rotated around the axis Y1 of the driven shaft 33; since the bottom plate 34 is simultaneously pulled by the elastic legs 36 and Limiting, the bottom plate 34 ultimately forms a regular orbital motion.
  • the transmission device 35 is specifically a belt.
  • a first pulley 322 is disposed at an end of the driving shaft 32, and a second pulley 331 corresponding to the first pulley 322 is disposed on the driven shaft 33.
  • the transmission 35 is sleeved on the first pulley 322 and the second pulley 331, so that the rotation of the drive shaft 32 is transmitted to the driven shaft 33.
  • the first eccentric member 332 is disposed on the driven shaft 33.
  • the first eccentric member 332 is sleeved with a first bearing 333.
  • the bottom plate 34 is specifically connected to the first bearing 333.
  • the first eccentric member 332 is eccentrically disposed with respect to the driven shaft 33 so as to be capable of driving the bottom plate 34 to be eccentric with respect to the driven shaft 33. Turn.
  • a driven shaft 33 connected to the center of the bottom plate 34 is provided.
  • the rotation of the drive shaft 32 is transmitted to the driven shaft 33 by the transmission device 35, and the points on the bottom plate 34 have the same motion trajectory while reducing the overall height of the sander 300, thereby achieving stable grinding efficiency.
  • a housing chamber 301 is provided in the casing 30.
  • Two second bearings 334 disposed in parallel are mounted on the top end of the driven shaft 33, and the two second bearings 334 are fixed in the receiving cavity 301.
  • two second bearings 334 are horizontally disposed, a second bearing 334 located above in the vertical direction has an upper surface 335, and a second bearing located below has a lower surface 336 which is parallel to the lower surface 336.
  • the motor 3 1 is horizontally disposed, and has a bottom edge 313 which is located at the lowermost side in the vertical direction.
  • the distance between the upper surface 335 and the lower surface 336 is D1
  • the distance from the bottom edge 313 of the motor 31 to the upper surface 335 of the second bearing 334 is D2
  • D2 is smaller than D1.
  • the sander 300 is connected to the housing 30 via the two second bearings 334, and the distance from the bottom edge 313 of the motor 31 to the second bearing 334 is less than the two second bearings.
  • the common height of 334 While ensuring that the driven shaft 33 is stably fixed, the height of the whole machine is reduced, so that the vibration generated during the operation of the whole machine can be reduced, and the operation feeling can be improved.
  • a fourth embodiment of the present invention discloses a sander 400 having a structure similar to that of the third embodiment.
  • the sander 400 includes a housing 40, a motor 41 housed in the housing 40 and disposed laterally, a vertically disposed drive shaft 42, a driven shaft 43 rotatably coupled to the housing 40, and an eccentrically rotatable A bottom plate 44 is attached to the driven shaft 43.
  • the driven shaft 43 is parallel to the drive shaft 42 and its end is connected to the middle of the bottom plate 44.
  • a transmission 45 is provided, through which the drive shaft 42 transmits the rotation to the driven shaft 43.
  • the motor 41 drives the driving shaft 42 to rotate, the driven shaft 43 is rotated by the transmission 45.
  • An elastic foot (not shown) between the bottom plate 44 and the housing 40, the driven shaft 43 has an axis Z l .
  • the bottom plate 44, driven by the driven shaft 43 has a tendency to eccentrically rotate about the axis Z1 of the driven shaft 43, but ultimately achieves regular orbital motion under the traction and restriction of the elastic legs.
  • the transmission 45 of the sander 400 is a gear transmission.
  • the transmission 45 includes a driving wheel 46 and a driven wheel 47 that meshes with the driving wheel 46.
  • the driving wheel 46 is disposed at the end of the driving shaft 42, and the driven wheel 47 is disposed at the top end of the driven shaft 43. the Lord When the moving shaft 42 drives the driving wheel 46 to rotate, the driving wheel 46 and the driven wheel 47 are engaged to finally rotate the driven shaft 43.
  • a fifth embodiment of the present invention discloses a low-height sander 500, which is the same as the fourth embodiment.
  • the sander 500 includes a casing 50, is housed in the casing 50, and is laterally disposed.
  • the motor 5 1 has a vertically disposed drive shaft 52, a bottom plate 53 suspended below the housing 50, and a driven shaft 54 coupled to the bottom plate 53.
  • the bottom plate 53 is eccentrically rotatably coupled to the drive shaft 52 and the driven shaft 54 at the same time.
  • the bottom plate 53 performs regular orbital motion under the joint action of the drive shaft 52 and the driven shaft 54.
  • the bottom plate 53 has a top end 531 and a tail end 532.
  • the driving shaft 52 is connected to the top end 531 of the bottom plate 53.
  • the bottom plate 531 has an axis U 1
  • the first eccentric member 521 is connected to the end.
  • the first eccentric member 521 has a center line U2.
  • An eccentric member 521 is peripherally sleeved with a first bearing 522, and the drive shaft 52 is coupled to the bottom plate 53 via a first bearing 522.
  • the driven shaft 54 is coupled to the tail end 532 of the bottom plate 53 in the form of a shaft.
  • the first shaft 541 is located at the upper portion in the vertical direction and the second portion 542 is located at the lower portion.
  • the first segment 541 has an axis U3.
  • the second segment 542 has an axis U4.
  • the first section 541 is sleeved with a second bearing 543 which is rotatably coupled to the housing 50 via a second bearing 543.
  • the second section 542 is sleeved with a third bearing 544 that is rotatably coupled to the base plate 53 by a third bearing 544.
  • the motor 51 drives the driving shaft 52 to rotate, and the driving shaft 52 drives the bottom plate 53 to have an eccentric rotation about the axis U 1 through the first eccentric member 521; since the bottom plate 53 is simultaneously eccentrically disposed on the driven shaft 54
  • the action of the first segment 541 and the second segment 542 causes the bottom plate 53 to eventually form a regular orbital motion.
  • the eccentricity of the first eccentric member 522 is the distance from the center line U2 of the first eccentric member 522 on the driving shaft 52 to the axis U 1 of the driving shaft 52
  • the eccentric distance of the driven shaft 54 is the first The distance between the axes U3, U4 of the length 541 and the second segment 542; specifically, the eccentricity of the driven shaft 54 is slightly larger than the eccentricity of the drive shaft 52, so that the bottom plate 53 can be smoothly guided by the drive shaft 53 and the slave The moving shaft 54 is driven in common.
  • the trajectories of the points on the bottom plate 53 are slightly different.
  • the trajectories of the points on the top end 531 are substantially circular, and the trajectories of the points on the end 532 are substantially elliptical. This structure can also improve the overall grinding of the bottom plate 53. Quality and efficiency.
  • a sixth embodiment of the present invention discloses a low-height sander 600, and Similarly to the fifth embodiment, the sander 600 includes a housing 60, a motor 61 housed in the housing 60 and disposed laterally, a vertically disposed drive shaft 62, a driven shaft 63, and a bottom plate suspended below the housing 60. 64.
  • the bottom plate 64 is simultaneously eccentrically coupled to the drive shaft 62 and the driven shaft 63.
  • the end of the driving shaft 62 is provided with a first eccentric member 621.
  • the first eccentric member 621 is mounted with a first bearing 622.
  • the bottom plate 64 is coupled to the driving shaft 62 via a first bearing 622.
  • a second eccentric member 631 is disposed at the end of the driven shaft 63, and a second bearing 632 is mounted on the second eccentric member 621.
  • the bottom plate 64 is coupled to the driven shaft 63 via the second bearing 632.
  • the first eccentric 621 has a first eccentricity with respect to the drive shaft 62
  • the second eccentric 631 has a second eccentricity with respect to the driven shaft 63.
  • the first eccentricity is equal to the second eccentricity.
  • a drive unit 65 is further provided between the drive shaft 62 and the driven shaft 63.
  • the driven shaft 63 directly drives the driven shaft 63 to rotate, so that the bottom plate 64 can be simultaneously driven by the driving shaft 62 and the driven shaft 63, so that the points on the bottom plate 64 can be synchronously moved to the bottom plate 64.
  • the overall movement is more stable, further improving the quality of the grinding.
  • the transmission device 65 specifically includes a first gear 651 and a second gear 652.
  • the first gear 651 is mounted on the drive shaft 62, and the second gear 652 is coupled to the driven shaft 63.
  • the driven shaft 63 is rotated by the engagement of the first gear 651 and the second gear 652.
  • the transmission 65 is not limited to the above-described gear transmission, and may be other transmission methods such as belt transmission, chain transmission, and the like.
  • a seventh embodiment of the present invention discloses a low-height sander 700, which includes a housing 70, a motor 71 housed in the housing 70 and horizontally horizontally disposed, and a vertical A drive shaft 72 is provided and a bottom plate 73 disposed below the housing 70.
  • the bottom plate 73 is eccentrically rotatably coupled to the drive shaft 72, and the drive shaft 72 is substantially coupled to the center of the bottom plate 73.
  • An elastic leg 74 is disposed between the bottom plate 73 and the housing 70. The limit of the elastic legs 74 causes the bottom plate 73 to finally form a regular orbital motion.
  • the height of the whole machine can be greatly reduced; at the same time, the bottom plate 73 has a geometric center, and the drive shaft 72 is connected to the geometric center of the bottom plate 73, so that the bottom plate 73 can be smoothly driven, so that the bottom plate 73 is The trajectories of the points are substantially the same, giving the entire bottom plate 73 a higher quality and efficiency of sanding.
  • a plurality of elastic legs 74 are disposed between the bottom plate 73 and the housing 70, and the top of the elastic legs 74 has an apex 741 located at a highest point in the vertical direction.
  • the motor 71 has a motor shaft 711 disposed laterally, and the motor shaft 711 cooperates with the driving shaft 72 to drive the driving shaft to rotate.
  • Motor shaft 711 has an axis 712 that is horizontally disposed.
  • the bottom of the bottom plate 73 has a bottom surface for mounting a grinding member (not shown) 731.
  • the vertical height between the apex 741 of the elastic leg 74 and the bottom surface 731 of the bottom plate 73 is HI
  • the vertical height between the axis 712 of the motor 71 and the bottom surface 731 of the bottom plate 73 is H2, wherein H2 is smaller than HI, thereby ensuring
  • the whole machine has a low vertical height, which reduces the vibration generated during operation and is easier to operate.
  • the maximum outer diameter D of the motor 71 is 32 to 45 mm
  • the height HI is 36 to 50 mm
  • the height H2 is 36 to 50 mm.
  • the ratio between HI and D is 0.8 1.6
  • the ratio between H2 and D is 0.8 1.6
  • the ratio between H2 and HI is 0.7 ⁇ 1.6.
  • a low-height sander 800 is disclosed. Similar to the structure of the sander 700 in the seventh embodiment, the sander 800 includes a housing 80, a motor 81 housed in the housing 80 and disposed horizontally horizontally, a vertically disposed drive shaft 82, and a housing disposed in the housing 80 bottom plate 83.
  • the bottom plate 83 is eccentrically coupled to the drive shaft 82, and the drive shaft 82 is substantially coupled to the center of the bottom plate 83.
  • An elastic leg (not shown) is disposed between the bottom plate 83 and the housing 80, and the bottom plate 83 finally forms a regular orbital motion by the limitation of the elastic legs.
  • the housing 80 has a curved head 801, the drive shaft 82 is vertically disposed, and a cavity 802 is formed in the head 801 near the drive shaft 82.
  • the sander 800 has a switch 84 and a circuit board 85 that control the operation of the entire machine, and the switch 84 is electrically connected to the circuit board 85 and the motor 81, respectively.
  • the switch 84 is mounted on the head 801 of the housing 80, and the circuit board 85 is disposed in the cavity 802 of the housing 80 and disposed horizontally horizontally.
  • the space can be utilized to make the overall structure compact and the volume small.
  • a ninth embodiment of the present invention discloses a low-height sander 900, which is similar in structure to the third embodiment, and includes a housing 90, a motor 91 disposed in the housing 90, and a bevel gear through the motor 91.
  • the drive shaft 92 is not coupled to the base plate 94, and the base plate 94 is eccentrically coupled to the driven shaft 93.
  • the drive shaft 95 is provided between the drive shaft 92 and the driven shaft 93, and the drive shaft 95 transmits the rotation to the driven shaft 93.
  • the driven shaft 93 is rotatably fixedly coupled to the housing 90 via two first bearings 96 and a second bearing 97 disposed in parallel.
  • the difference from the third embodiment is that the first bearing 96 and the second bearing 97 are in the vertical direction Set up interval.
  • a first pulley 921 is mounted on the end of the driving shaft 92
  • a second pulley 931 corresponding to the first pulley 921 is mounted on the driven shaft 93
  • the second pulley 93 1 is disposed on the driven shaft 93 at the first position.
  • the transmission device 95 is specifically a belt and is supported by the first pulley 921 and the second pulley 931.
  • the driven shaft 93 is more stably connected to the casing 90, and sloshing is less likely to occur.
  • the transmission 95 is coupled to the section of the driven shaft 93 between the first bearing 96 and the second bearing 97, the transmission 95 is actuated by the force on the driven shaft 93, by the first bearing 96 and The second bearing 97 is evenly distributed, further preventing the driven shaft 93 from being shaken when subjected to an external force, thereby improving the stability of the whole machine during operation and improving the use of the machine.
  • the motors are all high speed motors, preferably DC high speed motors, and at the same time, the rotational speed of the motor is maintained between 15,000 and 25,000 rpm. ⁇ Using a high-speed motor, the volume of the motor can be reduced by high speed, which reduces the volume of the entire product. At the same time, the high-speed motor drives the vacuum fan to rotate at a high speed, which improves the efficiency of vacuuming.
  • the projection of the center of gravity of the sanding machine of the present invention in the horizontal plane falls within the contour range of the bottom plate, thereby ensuring that the whole machine is more easily balanced and convenient to operate during operation. It is not easy for the operator to feel tired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

一种磨削动力工具，包括：壳体（10）；马达（11），设置在所述壳体（10）内；底板（13），设置在所述壳体（10）下方，用于连接磨削件；主动轴（12），在所述马达（10）的带动下旋转运动，所述主动轴（12）的一端与所述马达（10）配接，另一端延伸出所述壳体（10）并与所述底板（13）偏心转动地连接，使所述底板（13）作规则地轨道式运动。所述底板（13）上安装有从动轴（15），所述主动轴（12）和所述从动轴（15）之间设置有传动装置（16），所述主动轴（12）转动时，带动所述传动装置（16）作旋转往复摆动运动，所述传动装置（16）将旋转往复摆动运动传递至所述从动轴（15）。通过主动轴（12）和从动轴（15）同时所用于底板（13），使底板（13）上各点地运动轨迹大致相同，从而提高打磨质量和效率。

Description

磨削动力工具 技术领域
本发明涉及一种动力工具， 尤其是一种手持式的磨削动力工具。
背景技术
砂光机是现代木工业中较常用的手持式磨削动力工具， 它是主要通过装 于砂光机底板上的砂纸或砂布作高速轨道摆动， 对木料、 金属、 玻璃、 塑料 等表面进行砂光作业， 因此广泛用于建筑装饰、 家具制造、 汽车、 造船等行 业。 电动砂光机具有操作方便、 安全可靠等特点。 使用它时既能省时、 省力， 又能获得光滑平整的表面。
砂光机有两种类型， 即平板摆动砂光机（简称板砂）和盘式轨道砂光机（简 称圆砂）， 两者底板的运动轨迹不同。 圆砂在工作时， 底板同时进行公转和自 转运动； 而板砂在工作时， 底板仅做公转运动。
如中国专利公开第 CN101134295A号专利申请，公开了一种摆动砂光机。 其包括竖直设置的马达， 马达轴末端安装有偏心件， 偏心件的中心线相对于 马达轴的轴线偏心设置（ 即具有一定间距）。底板通过偏心件连接在马达轴上， 底板的四角与壳体之间分别设置有一个弹性支脚 24。 马达轴转动时， 通过偏 心件带动底板围绕马达轴的轴线偏心转动， 同时， 由于受到四个弹性支脚 24 的牵引限制， 底板作规则的轨道运动。
然而， 上述摆动砂光机， 由于马达竖直设置， 而且底板通常设置较大。 由于马达轴与底板之间仅具有位于底板中部的一个驱动点， 因此， 工作时， 底板中部和周围区域的摩擦效率会出现不同， 从而导致被磨削表面不均匀。 另外， 由于马达竖直设置， 使整机的高度太大， 使工作时产生的震动较大， 会很容易使操作者的手臂疲劳， 影响操作手感。
因此， 实有必要提供一种改进的磨削动力工具， 以解决上述问题。
发明内容
本发明的目的在于提供一种磨削动力工具， 能够使底板上各点的运动轨 迹大致相同， 以提高磨削质量和效率。
为实现上述目 的， 本发明所釆用的技术方案如下： 一种磨削动力工具， 包括： 壳体； 马达， 设置在所述壳体内； 底板， 设置在所述壳体下方， 用于 连接磨削件； 主动轴， 在所述马达的带动下旋转运动， 所述主动轴的一端与 所述马达配接， 另一端延伸出所述壳体并与所述底板偏心转动地连接， 使所 述底板作规则的轨道式运动。 其中， 所述底板上安装有从动轴， 所述主动轴 和所述从动轴之间设置有传动装置， 所述主动轴转动时， 通过所述传动装置 带动所述从动轴往复摆动运动。
优选地， 所述传动装置包括可转动地连接在所述壳体上的传动轴和固定 连接在所述传动轴上的传动件， 所述传动轴平行于所述主动轴。
优选地， 所述主动轴上安装有与所述底板配接的第一偏心件和与所述传 动件配接的第二偏心件， 所述第一和第二偏心件的中心线相对于所述主动轴 的轴线偏心设置。
优选地， 所述传动件的两端分别形成有第一叉状部和第二叉状部， 所述 第一叉状部与所述第二偏心件配接， 所述第二叉状部与所述从动轴配接。
优选地， 所述第一和第二偏心件的中心线相对于所述主动轴的轴线对称 设置。
优选地， 所述主动轴与所述底板配接的位置位于所述底板的前端， 所述 底板的尾端与所述壳体之间设置至少两个弹性支脚。
优选地， 所述底板上与所述两弹性支脚和所述主动轴分别配接的三个点 的运动轨迹方向相同。
优选地， 所述底板上与所述两弹性支脚和所述主动轴分别的三个点之间 的连线形成等腰三角形， 所述从动轴与所述底板配接的点位于所述两弹性支 脚连线的中线上。
优选地， 所述马达横向设置。
优选地， 所述磨削动力工具整体具有重心， 其重心在水平面内的投影位 于所述底板的轮廓内。
优选地， 所述马达的前部安装有与所述主动轴配合的马达轴， 所述马达 的后部安装有吸尘风扇。
优选地， 所述壳体尾部安装有集尘装置， 所述集尘装置包括与所述吸尘 风扇靠近的旋风分离器。
优选地， 所述集尘装置分为两部分， 分别位于所述壳体的两侧。
通过设置同时与底板连接的主动轴和从动轴， 并通过传动装置使主动轴 带动从动轴同时转动。 主动轴和从动轴同时作用于底板， 使底板上各点的运 动轨迹大致相同， 从而提高打磨质量和效率。
本发明的另一目 的在于提供一种磨削动力工具， 能够使底板上各点的运 动轨迹大致相同， 以提高磨削质量和效率。
为实现上述目 的， 本发明所釆用的技术方案如下： 一种磨削动力工具， 包括： 壳体； 马达， 设置在所述壳体内； 底板， 设置在所述壳体下方， 用于 连接磨削件； 及主动轴， 在所述马达的带动下旋转运动， 并与所述底板间隔 设置。 其中， 所述底板上安装有从动轴， 所述从动轴的一端与所述壳体能够 转动地连接， 另一端与所述底板能够偏心转动地连接， 所述主动轴和所述从 动轴之间设置有传动装置， 所述主动轴转动时， 通过所述传动装置带动所述 从动轴转动， 进而使所述底板作规则的轨道式运动。
优选地， 所述从动轴通过安装在其上的两个轴承连接在所述壳体上。 优选地， 所述两个轴承间隔设置， 所述传动装置连接在所述从动轴位于 所述两个轴承之间的区段上。
优选地， 所述马达具有在竖直方向上位于最下方的底边， 所述两个轴承 具有在竖直方向上位于最上方的上表面和位于最下方的下表面， 所述马达的 底边到所述上表面的竖直高度小于所述上表面和所述下表面之间的竖直高 度。
优选地， 所述壳体上设有收容腔， 所述两个轴承平行的安装在所述收容 腔内。
优选地， 所述底板的两端与所述壳体之间， 分别对称设置有两个弹性支 脚。
优选地， 所述主动轴竖直设置， 所述从动轴平行于所述主动轴。
优选地， 所述从动轴上安装有第一偏心件， 所述第一偏心件相对于所述 从动轴偏心设置， 从而能够带动所述底板相对于所述从动轴偏心转动。
优选地， 所述传动装置可以是皮带传动、 齿轮传动、 链传动中的一种。 优选地， 所述马达横向水平设置。
通过设置主动轴、 从动轴和连接主动轴与从动轴的传动装置， 主动轴不 与底板连接， 而与从动轴连接， 从而使主动轴的转动通过传动装置传递至从 动轴， 并最终带动底板偏心转动。 该磨削动力工具的底板上各点的运动轨迹 大致相同， 从而能够提高打磨质量和效率。
本发明的另一目 的在于提供一种磨削动力工具， 能够在降低整机高度的 同时， 方便尘屑的排除。
为实现上述目 的， 本发明所釆用的技术方案如下： 一种磨削动力工具， 包括： 壳体； 马达， 横向设置在所述壳体内； 底板， 设置在所述壳体下方， 用于连接磨削件； 主动轴， 在所述马达的带动下旋转运动， 所述主动轴的一 端与所述马达配接， 另一端延伸出所述壳体并与所述底板偏心转动地连接， 使所述底板作规则的轨道式运动； 其中， 所述马达的前端具有与主动轴配合 传动的马达轴， 所述马达的后端安装有吸尘风扇。
优选地， 所述壳体的尾部安装有集尘装置， 所述集尘装置包括与所述吸 尘风扇靠近的旋风分离器。
优选地， 所述集尘装置分为两部分， 分别位于所述壳体的两侧。
优选地， 所述壳体尾部设有排气室， 所述马达具有延伸入所述排气室的 风扇轴， 所述吸尘风扇收容在所述排气室并安装在所述风扇轴上。
优选地， 所述壳体上形成有集尘通道， 所述集尘装置具有可将空气排出 外界的出口， 携带尘屑的空气通过所述集尘通道， 首先进入所述排气室， 然 后通过所述集尘装置后从所述出口排放至外界。
优选地， 所述壳体与所述底板之间设置有环形弹性件。
优选地， 所述壳体上开设有卡槽， 所述底板的中部向上凸出延伸有环形 凸起， 所述弹性件的上端连接在所述卡槽内， 所述弹性件的下端套设在所述 环形凸起上。
优选地， 所述底板上设置有从动轴， 所述主动轴与所述从动轴之间设有 传动装置。
优选地， 所述主动轴转动时， 带动所述传动装置作旋转往复摆动运动， 所述传动装置将旋转往复摆动运动传递至所述从动轴。
优选地， 所述主动轴上安装有与所述底板配接的第一偏心件和与所述传 动件配接的第二偏心件， 所述第一和第二偏心件的中心线相对于所述主动轴 的轴线偏心设置。
通过将马达横向水平设置， 并将吸尘风扇安装在马达的后端， 能够在降 低整机高度的同时， 方便尘屑的排除。 马达的前端与主动轴配合， 后端连接 吸尘风扇， 使吸尘风扇的位置放置更合理， 从而缩短集尘通道的长度， 使整 机体积更小， 成本更低。
附图说明
图 1为本发明第一实施方式中砂光机的立体示意图。
图 2为图 1所示砂光机壳体去除一半后的立体示意图。
图 3为图 1所示砂光机在竖直方向的剖面示意图。
图 4为图 1所示砂光机在水平方向的剖面示意图。 图 5为图 1所示砂光机的立体分解示意图。
图 6为图 1所示砂光机从另一方向观察的立体示意图。
图 7为图 1所示砂光机沿集尘装置进行横向剖切的剖面示意图。
图 8为本发明第二实施方式中砂光机的立体示意图。
图 9为图 8所示砂光机的壳体去除一半后的立体示意图。
图 10为图 8所示砂光机在竖直方向的剖面示意图。
图 11本发明第三实施方式中砂光机的立体示意图。
图 12为图 11所示砂光机的壳体去除一半后的立体示意图。
图 13为图 11所示砂光机在竖直方向的剖面示意图。
图 14为本发明第四实施方式中砂光机的结构示意图。
图 15为本发明第五实施方式中砂光机的结构示意图。
图 16为本发明第六实施方式中砂光机的结构示意图。
图 17为本发明第七实施方式中砂光机的结构示意图。
图 18为本发明第八实施方式中砂光机的结构示意图。
图 19为本发明第九实施方式中砂光机的结构示意图。
具体实施方式
下面结合附图及具体实施方式对本发明作进一步的详细说明。
具体实施方式一
请参阅图 1 和图 2 , —种磨削动力工具， 具体是一种低高度平板摆动砂 光机 100。 该砂光机 100 包括壳体 10、 收容在壳体 10 内的马达 11、 自壳体 10 内延伸出的主动轴 12、 连接在主动轴 12上的底板 13和设置在壳体 11与 底板 13之间的弹性支脚 14。 马达 11转动时， 通过主动轴 12带动底板 13偏 心转动， 同时， 在弹性支脚 14的限制下， 底板 13最终做规则的轨道运动。
壳体 10整体尺寸较小， 形状大致如鼠标， 用一只手就可以轻松地握持。 马达 11横向设置， 收容在壳体 10 内。 马达 11横向设置， 以降低整机的高度， 其具有马达轴 111 , 马达轴 111上安装有第一轴承 112 , 通过第一轴承 112支 撑在壳体 10 内。马达轴 111与主动轴 12之间，设有互相配合的小锥齿轮 113 和大锥齿轮 121 ,从而将马达轴 111的高速转动传递到主动轴 12的低速转动。
底板 13大致呈三角形， 其具有底面 131 , 底面 131上通过尼龙搭扣等可 更换地连接有砂纸或砂布等磨削件。 工作时， 磨削件在底板 13的驱动下作用 于工件的表面进行打磨砂光处理。 底板 13具有尖角形顶端 132和与顶端 132 相对的尾端 133 , 顶端 132的尖部恰好位于尾端 133的中线 XI上。 底板 13通过弹性支脚 14悬挂在壳体 10下方， 本实施方式中， 设置两个 弹性支脚 14。 两弹性支脚 14靠近底板 13的尾端 133 , 且相对于尾端 133的 中线 XI对称设置。 另外， 主动轴 12与底板 13的配接位置靠近底板 13的顶 端 132 , 并位于尾端 133的中线 XI上。 因此， 砂光机 100在工作时， 主动轴 12带动底板 13做旋转运动， 但是由于两弹性支脚 14的限制和拖拽， 底板 13 最终作规则的轨道式运动。
如图 2和图 3所示，主动轴 12通过平行设置的第二轴承 122和第三轴承 123可转动地设置在壳体 10 内， 其具有大致垂直于底板 13的轴线 X2。 主动 轴 12的末端安装有第一偏心件 124 , 第一偏心件 124具有中心线 X3 , 该中 心线 X3平行于主动轴 12的轴线 X2。 底板 13上设有靠近顶端 132的收容座 134 , 主动轴 12上的第一偏心件 124收容在收容座 134 内。 本实施方式中， 第一偏心件 124外部进一步套设有第四轴承 125 , 装配时， 第四轴承 125恰 好安装在收容座 134 内， 从而将底板 13可偏心转动地连接在主动轴 12上。
马达 11工作时， 通过小锥齿轮 113和大锥齿轮 121 的配合， 马达轴 111 将转动减速传递至主动轴 12。 主动轴 12转动时， 则通过第一偏心件 124带 动底板 13 围绕轴线 X2偏心转动， 并最终在两弹性支脚 14的限制下， 使底 板 13最终输出规则的轨道式运动。 但是， 由于主动轴 12与底板 13的配接位 置靠近底板 13的顶端 132 , 因此， 底板 13的顶端 132受到主动轴 12的驱动 力较大， 而尾端 133受到的驱动力在弹性支脚 14的影响下较小， 从而使顶端 132的摆动幅度大于尾端 133的摆动幅度， 并最终导致底板 13的顶端 132和 尾端 133的打磨效率不同， 使底板 13整体打磨不均勾， 影响被打磨工件表面 的打磨质量。
为了保证砂光机 100的打磨质量， 进一步在底板 13上安装有从动轴 15 , 并在主动轴 12和从动轴 15之间设置传动装置 16。 主动轴 12转动时， 带动 传动装置 16旋转往复摆动运动， 传动装置 16进而带动从动轴 15运动。 在主 动轴 12和从动轴 15的共同作用下，底板 13的顶端 132和尾端 133上的每一 点达到大致相同的运动轨迹， 从而使底板 13上各部分的打磨质量相同， 提高 被打磨表面的打磨质量。
结合图 2至图 4 , 从动轴 15不可转动地固定在底板 13的大致中心位置， 并相对主动轴 12平行设置。 从动轴 15为柱状， 其自 由端套设安装有第五轴 承 151。 主动轴 12上安装有在轴向上位于第一偏心件 124上方的第二偏心件 126 , 该第二偏心件 126的中心线 X4平行于主动轴 12的轴线 X2 , 并间隔有 一定间距。 传动装置 16可转动地连接在壳体 10上， 并与第二偏心件 126配 接。 主动轴 12转动时， 通过第二偏心件 126带动传动装置 16旋转往复摆动 运动。 传动装置 16 同时与从动轴 15配接， 以将其旋转往复摆动运动传递至 从动轴 15。 本实施方式中， 从动轴 15与底板 13非偏心地连接， 当然， 底板 13也可以偏心地连接在从动轴 15上。
本实施方式中， 第二偏心件 126 的中心线 X4与第一偏心件 124的中心 线 X3相对于主动轴 12的轴线 X2对称设置，从而使底板 13顶端 132和尾端 133 上各点的运动方向和轨迹大致上相同， 同时第一偏心件 124和第二偏心 件 126的偏心转动惯量能够相互抵消， 减少主动轴 12所产生的振动。 第二偏 心件 126上进一步套设有第六轴承 127 , 传动装置 16通过第六轴承与第二偏 心件 126配合。
具体地， 传动装置 16包括相对固定连接的传动轴 161和传动件 162 , 传 动轴 161 大致垂直于传动件 162。 传动轴 161 竖直设置， 其上套设有两个相 邻且平行设置的第七轴承 163。 壳体 10上形成有竖直设置的收容腔 101 , 传 动轴 161通过两个第七轴承 163可转动地固定在收容腔 101 内。 通过并排设 置两个第七轴承 163 , 能够避免传动轴 161—端受力而产生震动， 提高传动 轴 161 固定的稳定性。
传动件 162水平设置， 其两端分别形成有对称设置的第一叉状部 164和 第二叉状部 165。 两个第一叉状部 164和第二叉状部 165均大致呈 U形， 其 中， 第一叉状部 164与第五轴承 151 配接， 第二叉状部 165与第六轴承 127 配接， 第一叉状部 164和第二叉状部 165分别包覆在第五轴承 151和第六轴 承 127 两侧。 主动轴 12转动时， 第二偏心件 126带动第六轴承 127 围绕轴线 X2 偏心转动。 通过第二叉状部 165 与第六轴承 127 的配合， 使传动件 162 围绕传动轴 161 的轴线 X5旋转往复摆动， 并通过第一叉状部 164与第五轴 承 151 的配合， 将传动件 162的摆动运动传递至从动轴 15。
由此， 、光机 100在工作时， 其底板 13 同时受到主动轴 12的偏心驱动 和传动装置 16的旋转往复摆动驱动，并同时受到两弹性支脚 14的牵引限制， 使底板 13上各部分的振动幅度大致上基本相同， 从而使底板 13整体的打磨 质量和效率均得到提高。
如图 1所示， 壳体 10对应底板 13 的顶端 132和尾端 133 , 具有相对的 前端 102和后端 103。 砂光机 100工作时， 底板 13上的磨削件作用在工件表 面， 会产生尘屑。 为了防止尘屑飞溅， 在壳体 10的后端 103 , 安装有集尘装 置 17。 马达 11与马达轴 111相对的一端， 安装有吸尘风扇 18。 马达 11横向 设置， 马达轴 111设置在壳体 10的前端 102 内， 吸尘风扇 18设置在壳体 10 的后端 103 内， 从而在实现降低砂光机 100整体高度的同时， 合理布置吸尘 风扇 18的位置， 从而能够方便地实现集尘。
如图 2和图 3所示， 具体地， 壳体 10的后端 103形成有一排气室 104 , 该排气室 104的两侧开设有若干通风口 105。 马达 11具有与马达轴 111相对 设置的风扇轴 114 , 风扇轴 114延伸入排气室 104 内， 吸尘风扇 18安装在风 扇轴 114上， 并收容在排气室 104 内。
集尘装置 17 包括筒状集尘盒 171 和位于集尘盒 171 内部的旋风分离器 172 ,集尘盒 171套设在壳体 10的排气室 104外部，通过其上的弹性卡扣 170 可拆卸地连接在壳体 10上。 旋风分离器 172包括竖直设置的流通室 173、 连 接在流通室 173上的旋风管 174、入口 175和出口 176。 流通室 173 包括两垂 直于马达轴 111 的前壁 177和后壁 178 , 旋风管 174为两个， 平行连接在后 壁 178上， 出口 176和入口 175分别连接在前壁 178的上、 下两端。 出口 176 为两个， 分别与旋风管 174对应。 出口 176具体为水平设置的圆筒状， 一端 延伸入流通室 173 内并与旋风管 174对应， 另一端延伸入壳体 10 的排气室 104 内。
如图 6所示， 底板 13的底部开设有尘屑槽 135 , 尘屑槽 135可以规则或 不规则的在底板 13上延伸， 并扩展至底板 13上的在部分区域， 从而能够尽 可能高效地收集底板 13工作时产生的尘屑。 底板 13的中部， 靠近尾端 133 , 还向上凸出有尘屑室 136。 尘屑室 136的底部与尘屑槽 135连通， 其一侧通 过壳体 10与集尘装置 17的入口 175连通。
结合图 3和图 7所示， 砂光机 100工作时， 马达 11 带动吸尘风扇 18转 动， 使排气室 104 内形成负压。 携带有尘屑的空气， 通过底板 13 的尘屑槽 135进入尘屑室 136 , 接着通过旋风分离器 172的入口 175进入流通室 173 ; 从流通室 173进入旋风管 174 , 通过旋风管 174的作用， 使空气中的尘屑堆 积到旋风管 174的内壁， 并最终滑落至集尘盒 171 内； 干净的空气则通过出 口 176 , 流入排气室 104 , 并最终通过通风口 105排出。
综上所述， 通过将马达横向设置， 在底板上设置从动轴， 并在从动轴和 主动轴之间设置传动装置， 并使传动装置作旋转往复摆动运动， 通过与从动 轴的配合， 将旋转往复摆动运动传递至底板。 上述结构， 使砂光机整机高度 降低的同时， 保证底板上各点的运动轨迹大致相同， 进而提高打磨质量和打 磨效率。
具体实施方式二
上述第一实施方式中， 砂光机 100将吸尘风扇 18设置在马达 11尾部， 并将集尘装置 17连接在壳体 10的后端 103 , 使整机的横向尺寸较大， 整机 的重心较靠后。 因此， 当将砂光机 100放置在工件上时， 底板 13可能放置不 稳， 很容易发生倾倒。 另外， 操作时， 使用者要使整机平衡， 需要付出更大 的力气， 从而让使用者很容易产生疲劳。
如图 8和图 9所示所示， 本发明的第二实施方式， 提供一种低高度砂光 机 200 , 与第一实施方式中的砂光机 100相同， 包括壳体 20、 收容在壳体 20 内的马达 21、 主动轴 22和连接在主动轴 22上的底板 23。 马达 21横向设置， 具有位于前端的马达轴 211 和后端的风扇轴 212 , 风扇轴 212上安装有吸尘 风扇 24。 底板 23的中部安装有从动轴 25 , 从动轴 25和主动轴 22之间设置 有传动装置 26。
一并参考图 9和图 10 , 本实施方式中， 砂光机 200的集尘装置 27分为 两部分， 对称地设置在壳体 20的两侧， 每部分均设置有用于排出干净空气的 出口 271。集尘装置 27釆用旋风分离的原理，具体结构基本同第一实施方式， 在此不再赘述。 不同点在于， 壳体 20上设有位于壳体 20尾部的排气室 201 和靠近底板 23的集尘通道 202 , 集尘通道 202的一端靠近底板 23 , 另一端连 接至排气室 201。 风扇轴 212延伸入排气室 201 内， 相应地， 吸尘风扇 24收 容在排气室 201 内。
本实施方式与第一实施方式的不同之处在于， 砂光机 200具有集尘装置 27 , 集尘装置 27与壳体 20横向并排设置， 位于壳体 20—侧。 由于集尘装置 27不是直接连接在壳体 20后方， 而是设置在壳体 20的一侧， 因此， 不会增 加整机的横向长度， 使整机的长度等于壳体 20的横向长度。 釆用该种结构的 砂光机 200 , 结构更紧凑， 整机的重心在竖直方向上大致与底板 23的中心位 于同一直线， 使整机操作时更稳定、 省力。
砂光机 200 工作时， 携带尘屑的空气通过集尘通道 202 , 首先进入排气 室 201 , 在吸尘风扇 24的推动下， 进入集尘装置 27 的旋风式分离器 （未图 示） 内； 携带尘屑的空气在经过集尘装置 27后， 空气中的尘屑被分离并收集 在集尘装置 27 内，干净的空气则通过集尘装置 27的出口 271被排放到外界。
将集尘装置 27设置在壳体 20—侧， 势必使砂光机 200的整体横向宽度 增加， 从而导致整机尺寸太大， 不方便操作。 为了减小整机的横向宽度， 砂 光机 200未设置弹性支脚， 使壳体 20尾部仅能包覆马达 21 即可。 因此， 壳 体 20的宽度可以减小， 从而使壳体 20和集尘装置 27整体的宽度减小。
为了替代弹性支脚， 本实施方式中， 砂光机 200的壳体 20与底板 23之 间， 设置有环形弹性件 28。 环形弹性件 28垂直于底板 23设置， 上端连接壳 体 20 , 下端连接底板 23。 主动轴 22带动底板 23偏心转动时， 在环形弹性件 28的限位下， 使底板 23最终做规则的轨道运动。
如图 10所示， 具体的， 壳体 20上开设有竖直设置的卡槽 202 , 底板 23 的中部向上凸出延伸有环形凸起 231。 环形弹性件 28具体为皮带， 形状为跑 道形。 弹性件 28的上端卡持在壳体 20的卡槽 202 , 下端套设在凸起 231上， 并通过紧固圏 29进行箍紧。 通过设置环形弹性件 28 , 使底板 23 与壳体 20 之间在整个周向范围内均被牵引， 底板 23的摆动运动更规则、 稳定。
具体实施方式三
如图 11 至图 13所示， 本发明第三实施方式揭示了低高度砂光机 300 , 包括壳体 30、设置在壳体 30 内的马达 31、 与马达 31通过锥齿轮连接的主动 轴 32、 被主动轴 32带动的从动轴 33和通过从动轴 33悬挂在壳体 30下方的 底板 34。 与实施方式一相同， 马达 31 横向设置， 前端延伸出水平设置的马 达轴 311。 主动轴 32竖直设置， 垂直于马达轴 3 11 , 并通过分别安装在主动 轴 32和马达轴 3 11上的在大锥齿轮 321和小锥齿轮 312啮合传动。
与第一实施方式的不同在于， 主动轴 32不与底板 34产生连接， 底板 34 连接在从动轴 33上。 主动轴 32与从动轴 33之间通过设有传动装置 35 , 通 过传动装置 35 , 主动轴 32将转动传递至从动轴 33。 从动轴 33平行于主动轴 32 , 其具有轴线 Y 1 , 顶端可转动地连接在壳体 30 上， 末端连接于底板 34 的中心。 底板 34的两端与壳体 30之间， 分别对称设置有两个弹性支脚 36。 底板 34可偏心转动地连接在从动轴 33上， 从动轴 33转动时， 带动底板 34 围绕从动轴 33 的轴线 Y 1有偏心转动的趋势； 由于底板 34 同时受到弹性支 脚 36的牵引和限制， 使底板 34最终形成规则的轨道式运动。
具体的， 本实施方式中， 传动装置 35具体为一皮带。 主动轴 32末端设 有第一带轮 322 , 从动轴 33上设有与第一带轮 322对应的第二带轮 331。 传 动装置 35套设支撑在第一带轮 322和第二带轮 331上， 从而将主动轴 32的 转动传递至从动轴 33。 从动轴 33 上设有第一偏心件 332 , 第一偏心件 332 外围套设有第一轴承 333 , 底板 34具体连接在第一轴承 333上。 第一偏心件 332相对于从动轴 33偏心设置， 从而能够带动底板 34相对于从动轴 33偏心 转动。
通过将马达 31横向设置， 并设置连接在底板 34中心的从动轴 33。 通过 传动装置 35将主动轴 32的转动传递至从动轴 33 , 在降低砂光机 300整体高 度的同时， 使底板 34上的各点具有相同的运动轨迹， 实现稳定的打磨效率。
为了将从动轴 33稳定地连接在壳体 30上，在壳体 30上设有收容腔 301。 从动轴 33的顶端安装有两平行设置的第二轴承 334 , 两第二轴承 334 固定在 收容腔 301 内。 通过设置两个平行的第二轴承 334 , 能够防止从动轴 33发生 晃动， 提高整机工作的稳定性。
另外， 两个第二轴承 334水平设置， 在竖直方向上位于上方的一个第二 轴承 334具有上表面 335 , 位于下方的一个第二轴承具有下表面 336 , 上表面 335平行于下表面 336。 马达 3 1横向水平设置， 其具有在竖直方向上位于最 下方的底边 313。 其中， 两个第二轴承 334 中， 上表面 335到下表面 336之 间的距离为 D 1 , 马达 31 的底边 313到第二轴承 334的上表面 335的距离为 D2 , 且 D2小于 D l。
本实施方式中，砂光机 300将从动轴 33通过两个第二轴承 334连接在壳 体 30上， 并使马达 31 的底边 3 13到第二轴承 334的距离小于两个第二轴承 334的共同高度。 在保证从动轴 33稳定固定的同时， 减小整机的高度， 从而 能够减少整机工作时产生的震动， 提高操作手感。
具体实施方式四
如图 14所示， 本发明第四实施方式， 揭示了一种砂光机 400 , 结构与第 三实施方式相似。 该砂光机 400 包括壳体 40、 收容在壳体 40 内且横向设置 的马达 41、 竖直设置的主动轴 42、 可转动地连接在壳体 40 上的从动轴 43 和可偏心转动地连接在从动轴 43上的底板 44。 从动轴 43平行于主动轴 42 , 其末端连接在底板 44 的中部。 主动轴 42 与从动轴 43之间， 设有传动装置 45 , 通过传动装置 45 , 主动轴 42将转动传递至从动轴 43。 马达 41 带动主动 轴 42转动时， 通过传动装置 45带动从动轴 43转动。 底板 44和壳体 40之间 的弹性动脚 （未图示）， 从动轴 43具有轴线 Z l。 底板 44在从动轴 43的带动 下， 具有围绕从动轴 43的轴线 Z 1偏心转动的趋势， 但在弹性支脚的牵引和 限制下， 最终实现规则的轨道运动。
与第三实施方式的不同之外在于，砂光机 400的传动装置 45为齿轮传动 装置。 具体的， 传动装置 45 包括主动轮 46和与主动轮 46啮合的从动轮 47 , 主动轮 46设置在主动轴 42的末端， 从动轮 47设置在从动轴 43的顶端。 主 动轴 42带动主动轮 46转动时， 通过主动轮 46与从动轮 47的啮合， 最终带 动从动轴 43转动。
具体实施方式五
如图 15所示， 本发明的第五实施方式， 公开一种低高度砂光机 500 , 与 第四实施方式相同， 该砂光机 500 包括壳体 50、 收容在壳体 50 内且横向设 置的马达 5 1、 竖直设置的主动轴 52、 悬挂在壳体 50下方的底板 53和连接在 底板 53上的从动轴 54。
不同之处在于：底板 53同时和主动轴 52和从动轴 54可偏心转动地连接。 主动轴 52转动时， 底板 53在主动轴 52和从动轴 54的共同作用下， 作规则 的轨道运动。 通过设置同时与底板 53可偏心转动地连接的主动轴 52和从动 轴 54 , 使底板 53上各点的运动轨迹基本相同， 从而使底板 53整体的打磨质 量更均匀 , 打磨效率更高。
具体的， 底板 53具有顶端 531和尾端 532 , 主动轴 52连接在底板 53顶 端 531 , 其具有轴线 U 1 , 末端连接有第一偏心件 521 , 第一偏心件 521具有 中心线 U2 , 在第一偏心件 521 外围套设有第一轴承 522 , 主动轴 52通过第 一轴承 522连接在底板 53上。 从动轴 54连接在底板 53的尾端 532 , 其为拐 轴形式， 具体包括竖直方向上位于上部的第一段 541 和位于下部的第二段 542 , 第一段 541具有轴线 U3 , 第二段 542具有轴线 U4。 第一段 541上套设 有第二轴承 543 , 通过第二轴承 543可转动地连接在壳体 50上。 第二段 542 上套设有第三轴承 544 , 通过第三轴承 544可转动地连接在底板 53上。
砂光机 500工作时， 马达 51 带动主动轴 52转动， 主动轴 52通过第一偏 心件 521 带动底板 53有围绕轴线 U 1 偏心转动的趋势； 由于底板 53 同时受 到从动轴 54上偏心设置的第一段 541和第二段 542的作用， 使底板 53最终 形成规则的轨道运动。 优选的， 本实施方式中， 第一偏心件 522的偏心距为 主动轴 52上第一偏心件 522的中心线 U2到主动轴 52的轴线 U 1的距离，从 动轴 54的偏心距为第一段 541和第二段 542的轴线 U3、 U4之间的距离； 具 体的， 从动轴 54的偏心距略大于主动轴 52的偏心距， 从而使底板 53能够平 稳地被主动轴 53和从动轴 54共同驱动。底板 53上各点的运动轨迹略有不同， 顶端 531上各点的轨迹大致呈圆形， 而尾端 532上各点的轨迹则大致呈椭圆 形， 该种结构同样能够提高底板 53整体的打磨质量和效率。
具体实施方式六
如图 16所示， 本发明的第六实施方式， 公开一种低高度砂光机 600 , 与 第五实施方式相同， 该砂光机 600 包括壳体 60、 收容在壳体 60 内且横向设 置的马达 61、 竖直设置的主动轴 62、 从动轴 63和悬挂在壳体 60下方的底板 64。 其中， 底板 64同时可偏心转动地连接在主动轴 62和从动轴 63上。 具体 的， 主动轴 62末端设有第一偏心件 621, 第一偏心件 621上安装有第一轴承 622, 底板 64通过第一轴承 622连接在主动轴 62上。 从动轴 63的末端设有 第二偏心件 631, 第二偏心件 621上安装有第二轴承 632, 底板 64通过第二 轴承 632与从动轴 63连接。 第一偏心件 621相对于主动轴 62具有第一偏心 距， 第二偏心件 631相对于从动轴 63具有第二偏心距， 优选的， 第一偏心距 与第二偏心距相等。
与第五实施例不同之处在于， 主动轴 62和从动轴 63之间进一步设有传 动装置 65。 主动轴 62转动时， 通过传动装置 65直接带动从动轴 63转动， 从而能够使底板 64能够同时被主动轴 62和从动轴 63驱动， 使底板 64上各 点都能够同步运动， 使底板 64整体上运动更平稳， 进一步提高打磨质量。
本实施方式中， 传动装置 65具体包括第一齿轮 651和第二齿轮 652, 第 一齿轮 651安装在主动轴 62上， 第二齿轮 652连接在从动轴 63上。 主动轴 62转动时， 通过第一齿轮 651和第二齿轮 652的啮合， 带动从动轴 63转动。
显然， 传动装置 65并不限于上述的齿轮传动， 也可以是其它传动方式， 如皮带传动、 链传动等。
具体实施方式七
如图 17所示， 本发明的第七实施方式， 公开一种低高度砂光机 700, 该 砂光机 700包括壳体 70、 收容在壳体 70 内且横向水平设置的马达 71、 竖直 设置的主动轴 72和设置在壳体 70下方的底板 73。 其中， 底板 73可偏心转 动地连接在主动轴 72上， 并使主动轴 72大致连接在底板 73的中心位置。 底 板 73与壳体 70之间设有弹性支脚 74, 通过弹性支脚 74的限位， 使底板 73 最终形成规则的轨道运动。 通过将马达 71横向水平设置， 能够大大降低整机 的高度； 同时， 底板 73上具有几何中心， 主动轴 72连接在底板 73的几何中 心上， 从而能够平稳地驱动底板 73, 使底板 73上各点的运动轨迹基本相同， 使整个底板 73具有更高的打磨质量和效率。
底板 73与壳体 70之间设置有若干弹性支脚 74, 弹性支脚 74的顶部具 有在竖直方向上位于最高点的顶点 741。马达 71具有横向设置的马达轴 711, 马达轴 711与主动轴 72配合，并带动主动轴转动。马达轴 711具有轴线 712, 轴线 712 水平设置。 底板 73 的底部具有用于安装磨削件 （未图示） 的底面 731。 弹性支脚 74的顶点 741到底板 73的底面 731之间的竖直高度为 HI , 马达 71 的轴线 712到底板 73 的底面 731之间的竖直高度为 H2 , 其中， H2 小于 HI , 从而能够保证整机具有较低的竖直高度， 减少工作时产生的震动， 更便于操作。
具体的， 本实施方式中， 马达 71 的最大外径 D为 32~45毫米， 高度 HI 为 36~50毫米， 高度 H2为 36~50毫米。 并使 D、 Hl、 H2之间保持以下比值 关系， 其中， HI与 D之间的比值为 0.8 1.6 , H2与 D之间的比值为 0.8 1.6 , H2 与 HI 之间的比值为 0.7~ 1.6。 通过以上设置， 能够使整机在保证低高度 的同时， 结构更合理、 紧凑。
具体实施方式八
如图 18所示， 本发明的第八实施方式， 公开一种低高度砂光机 800。 与 第七实施方式中的砂光机 700结构相似， 该砂光机 800 包括壳体 80、 收容在 壳体 80 内且横向水平设置的马达 81、竖直设置的主动轴 82和设置在壳体 80 下方的底板 83。 其中， 底板 83可偏心转动地连接在主动轴 82上， 并使主动 轴 82大致连接在底板 83的中心位置。 底板 83与壳体 80之间设有弹性支脚 (未图示）， 通过弹性支脚的限位， 使底板 83最终形成规则的轨道运动。
本实施方式中， 壳体 80具有弧形头部 801 , 主动轴 82竖直设置， 头部 801 内形成有靠近主动轴 82的空腔 802。 砂光机 800具有控制整个机器工作 的开关 84和电路板 85 , 开关 84分别与电路板 85和马达 81 电性连接。 开关 84安装在壳体 80的头部 801上， 电路板 85则设置在壳体 80的空腔 802 内， 并横向水平设置。
通过将开关 84设置在壳体 80的头部 801上，并将电路板 85设置在壳体 80的空腔 802 内， 能够充分利用空间， 使整机结构紧凑， 体积保持较小。
具体实施方式九
如图 19所示， 本发明第九实施方式揭示了低高度砂光机 900 , 与第三实 施方式结构相似， 包括壳体 90、 设置在壳体 90 内的马达 91、 与马达 91通过 锥齿轮连接的主动轴 92、 被主动轴 92带动的从动轴 93和通过从动轴 93 悬 挂在壳体 90下方的底板 94。 主动轴 92不与底板 94产生连接， 底板 94可偏 心转动地连接在从动轴 93上。主动轴 92与从动轴 93之间通过设有传动装置 95 , 通过传动装置 95 , 主动轴 92将转动传递至从动轴 93。 从动轴 93通过两 平行设置的第一轴承 96和第二轴承 97 , 可转动地固定连接在壳体 90上。
与第三实施方式的不同之处在于， 第一轴承 96和第二轴承 97在竖直方 向上间隔设置。 主动轴 92的末端安装有第一带轮 921 , 从动轴 93上安装有 与第一带轮 921对应的第二带轮 931 , 且第二带轮 93 1设置在从动轴 93位于 第一轴承 96和第二轴承 97之间的区段上。 传动装置 95具体为皮带， 被第一 带轮 921和第二带轮 931 支撑。
通过将第一轴承 96和第二轴承 97间隔设置，使从动轴 93更稳定地被连 接在壳体 90上， 不易发生晃动。 同时， 由于传动装置 95被连接在从动轴 93 位于第一轴承 96和第二轴承 97之间的区段， 使传动装置 95作动在从动轴 93上的力， 被第一轴承 96和第二轴承 97均匀分摊， 进一步避免了从动轴 93 在受到外力的情况下， 发生晃动， 从而提高整机工作时的稳定性， 提高使用 受命。
上述所有实施方式， 揭示了本发明砂光机的各种实现方式。 上述实施方 式中， 揭示了底板的不同驱动方式， 目的都是能够使底板上各点具有基本相 同的运动轨迹， 从而提高磨削质量和效率。 另外， 将马达横向水平设置， 能 够降低整机的高度， 但是本发明并不限于此， 马达也可以竖直设置。
另外， 上述所有实施方式中， 马达均为高速马达， 优选直流高速马达， 并同时使马达的转速保持在 15000~25000rpm 之间。 釆用高速马达， 能够通 过高转速减小马达的体积， 进而减小整个产品的体积。 同时， 高速马达带动 吸尘风扇高速转动， 能够提高吸尘效率。
需要指出， 上述各实施方式中， 本发明砂光机整机的重心在水平面内的 投影均落在底板的轮廓范围之内， 从而能够保证在工作时， 整机更容易平衡， 理便于操作， 使操作者不易感到疲劳。
本发明并不限于前述实施例中的实施方式， 本领域技术人员在本发明技 术精髓的启示下还可能做出其他变更， 但只要其实现的功能与本发明相同或 相似， 均应涵盖于本发明保护范围内。

Claims

权 利 要 求 书
1 . 一种磨削动力工具， 包括：
壳体；
马达， 设置在所述壳体内；
底板， 设置在所述壳体下方， 用于连接磨削件； 及
主动轴， 在所述马达的带动下旋转运动， 所述主动轴的一端与所述马达 配接， 另一端与所述底板偏心转动地连接， 使所述底板作规则的轨道式 运动；
其特征在于： 所述底板上安装有从动轴， 所述主动轴和所述从动轴之间 设置有传动装置， 所述主动轴转动时， 带动所述传动装置作旋转往复摆 动运动， 所述传动装置将旋转往复摆动运动传递至所述从动轴。
2. 如权利要求 1所述的磨削动力工具， 其特征在于： 所述传动装置包括可转 动地连接在所述壳体上的传动轴和固定连接在所述传动轴上的传动件，所 述传动轴平行于所述主动轴。
3. 如权利要求 2所述的磨削动力工具， 其特征在于： 所述主动轴上安装有与 所述底板配接的第一偏心件和与所述传动件配接的第二偏心件，所述第一 和第二偏心件的中心线均相对于所述主动轴的轴线偏心设置。
4. 如权利要求 3所述的磨削动力工具， 其特征在于： 所述传动件的两端分别 形成有第一叉状部和第二叉状部， 所述第一叉状部与所述第二偏心件配 接， 所述第二叉状部与所述从动轴配接。
5. 如权利要求 3所述的磨削动力工具， 其特征在于： 所述第一和第二偏心件 的中心线相对于所述主动轴的轴线对称设置。
6. 如权利要求 1述的磨削动力工具， 其特征在于： 所述主动轴与所述底板配 接的位置位于所述底板的前端，所述底板的尾端与所述壳体之间设置至少 两个弹性支脚。
7. 如权利要求 6所述的磨削动力工具， 其特征在于： 所述底板上与所述两弹 性支脚和所述主动轴分别配接的三个点的运动轨迹方向相同。
8. 如权利要求 6所述的磨削动力工具， 其特征在于： 所述底板上与所述两弹 性支脚和所述主动轴分别的三个点之间的连线形成等腰三角形，所述从动 轴与所述底板配接的点位于所述两弹性支脚连线的中线上。
9. 如权利要求 1述的磨削动力工具， 其特征在于： 所述马达横向设置。 如权利要求 1述的磨削动力工具， 其特征在于： 所述马达的前部安装有与 所述主动轴配合的马达轴， 所述马达的后部安装有吸尘风扇。
一种磨削动力工具， 包括：
壳体；
马达， 设置在所述壳体内；
底板， 设置在所述壳体下方， 用于连接磨削件； 及
主动轴， 在所述马达的带动下旋转运动， 并与所述底板间隔设置； 其特征在于： 所述底板上安装有从动轴， 所述从动轴的一端与所述壳体能 够转动地连接， 另一端与所述底板能够偏心转动地连接， 所述主动轴和所 述从动轴之间设置有传动装置， 所述主动轴转动时， 通过所述传动装置带 动所述从动轴转动， 进而使所述底板作规则的轨道式运动。
如权利要求 11所述的磨削动力工具， 其特征在于： 所述从动轴通过安装 在其上的两个轴承连接在所述壳体上。
如权利要求 11所述的磨削动力工具， 其特征在于： 所述底板的两端与所 述壳体之间， 分别对称设置有两个弹性支脚。
如权利要求 11所述的磨削动力工具， 其特征在于： 所述主动轴竖直设置， 所述从动轴平行于所述主动轴。
如权利要求 11所述的磨削动力工具， 其特征在于： 所述从动轴上安装有 第一偏心件， 所述第一偏心件相对于所述从动轴偏心设置， 从而能够带动 所述底板相对于所述从动轴偏心转动。
PCT/CN2013/080988 2012-08-07 2013-08-07 磨削动力工具 WO2014023229A1 (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201210278723.9A CN103567842B (zh) 2012-08-07 2012-08-07 磨削动力工具
CN201210278734.7A CN103567846B (zh) 2012-08-07 2012-08-07 磨削动力工具
CN201210278723.9 2012-08-07
CN201210278641.4A CN103567841B (zh) 2012-08-07 2012-08-07 磨削动力工具
CN201210278641.4 2012-08-07
CN201210278734.7 2012-08-07

Publications (1)

Publication Number Publication Date
WO2014023229A1 true WO2014023229A1 (zh) 2014-02-13

Family

ID=50067431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/080988 WO2014023229A1 (zh) 2012-08-07 2013-08-07 磨削动力工具

Country Status (1)

Country Link
WO (1) WO2014023229A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223508A1 (de) * 2016-11-28 2018-05-30 Robert Bosch Gmbh Tragbare Werkzeugmaschine
EP3693132A1 (en) * 2019-02-08 2020-08-12 Guido Valentini Hand-held and hand-guided random orbital polishing or sanding power tool
CN111906657A (zh) * 2019-05-07 2020-11-10 盖多·瓦伦蒂尼 用于对工件进行砂磨或抛光的手持式动力工具
US20220072676A1 (en) * 2020-09-04 2022-03-10 X'pole Precision Tools Inc. Electric grinding machine tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747280A (en) * 1970-08-08 1973-07-24 Bosch Gmbh Robert Portable power tool with orbital work-engaging means
DE3326854A1 (de) * 1983-07-26 1985-02-14 Festo KG, 7300 Esslingen Handwerkzeugmashine mit doppeltexzentrisch gelagerter werkzeugplatte
EP0893198B1 (de) * 1997-07-25 2003-11-26 TTS Tooltechnic Systems AG & Co. KG Handwerkzeugmaschine
CN1211187C (zh) * 2000-12-30 2005-07-20 罗伯特·博施有限公司 手持式工具机
CN1754653A (zh) * 2004-09-29 2006-04-05 罗伯特·博世有限公司 手持式磨削工具机、尤其是蓄电池供电的手持式磨削工具机
EP2072183A1 (de) * 2007-12-22 2009-06-24 J. Wagner GmbH Flächenschleifmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747280A (en) * 1970-08-08 1973-07-24 Bosch Gmbh Robert Portable power tool with orbital work-engaging means
DE3326854A1 (de) * 1983-07-26 1985-02-14 Festo KG, 7300 Esslingen Handwerkzeugmashine mit doppeltexzentrisch gelagerter werkzeugplatte
EP0893198B1 (de) * 1997-07-25 2003-11-26 TTS Tooltechnic Systems AG & Co. KG Handwerkzeugmaschine
CN1211187C (zh) * 2000-12-30 2005-07-20 罗伯特·博施有限公司 手持式工具机
CN1754653A (zh) * 2004-09-29 2006-04-05 罗伯特·博世有限公司 手持式磨削工具机、尤其是蓄电池供电的手持式磨削工具机
EP2072183A1 (de) * 2007-12-22 2009-06-24 J. Wagner GmbH Flächenschleifmaschine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108115621B (zh) * 2016-11-28 2022-09-20 罗伯特·博世有限公司 便携式工具机、工具接收部及用于振荡地驱动工具接收部的方法
CN108115621A (zh) * 2016-11-28 2018-06-05 罗伯特·博世有限公司 便携式工具机、工具接收部及用于振荡地驱动工具接收部的方法
DE102016223508A1 (de) * 2016-11-28 2018-05-30 Robert Bosch Gmbh Tragbare Werkzeugmaschine
EP3330044B1 (de) * 2016-11-28 2023-08-16 Robert Bosch GmbH Tragbare werkzeugmaschine
EP3693132A1 (en) * 2019-02-08 2020-08-12 Guido Valentini Hand-held and hand-guided random orbital polishing or sanding power tool
CN111546199A (zh) * 2019-02-08 2020-08-18 盖多·瓦伦蒂尼 手持和手导随机轨道抛光或砂磨动力工具
KR20200098410A (ko) * 2019-02-08 2020-08-20 귀도 발렌티니 닥터. 핸드-헬드 및 핸드-가이드되는 랜덤 궤도 연마 또는 샌딩 전동 공구
US11969850B2 (en) 2019-02-08 2024-04-30 Guido Valentini Hand-held and hand-guided random orbital polishing or sanding power tool
KR102360650B1 (ko) 2019-02-08 2022-02-09 귀도 발렌티니 핸드-헬드 및 핸드-가이드되는 랜덤 궤도 연마 또는 샌딩 전동 공구
EP3736084A1 (en) * 2019-05-07 2020-11-11 Guido Valentini Hand-held power tool for sanding or polishing a workpiece
CN111906657B (zh) * 2019-05-07 2022-08-30 盖多·瓦伦蒂尼 用于对工件进行砂磨或抛光的手持式动力工具
CN111906657A (zh) * 2019-05-07 2020-11-10 盖多·瓦伦蒂尼 用于对工件进行砂磨或抛光的手持式动力工具
US12005542B2 (en) 2019-05-07 2024-06-11 Guido Valentini Hand-held power tool for sending or polishing a workpiece
US20220072676A1 (en) * 2020-09-04 2022-03-10 X'pole Precision Tools Inc. Electric grinding machine tool

Similar Documents

Publication Publication Date Title
WO2014023229A1 (zh) 磨削动力工具
CN103567841B (zh) 磨削动力工具
CN109691929A (zh) 一种美缝专用瓷砖缝隙冲击清理装置
CN210757053U (zh) 一种法兰外圆自动抛光机
KR20110004186U (ko) 집진 효율을 높인 바닥 연삭기
CN110497292A (zh) 一种木质家具板生产手持式加工打磨装置
CN108441585A (zh) 一种用于皮革的打磨装置
CN103567842B (zh) 磨削动力工具
CN103567846B (zh) 磨削动力工具
CN116572132B (zh) 一种金属构件表面打磨装置
KR100831038B1 (ko) 표면처리용 연마장치
CN202681826U (zh) 具有拍打器的手持式吸尘器
CN103846755A (zh) 墙壁无尘打磨机
CN205085768U (zh) 一种一体式吸尘磨光机
CN205363456U (zh) 一种打磨机的自吸尘结构
CN208409497U (zh) 一种新型陶瓷打磨装置
KR200383965Y1 (ko) 산업용설비의 표면처리용 연마기
CN203045455U (zh) 墙壁无尘打磨机
CN106425723A (zh) 一种自吸尘墙壁抛光机
CN112405164A (zh) 一种木制地板打磨机
CN207387290U (zh) 一种蘑菇头结构类橡胶产品半自动修边治具
WO2019154292A1 (zh) 打磨工具
CN211029448U (zh) 打磨工具
CN213164675U (zh) 一种工艺品生产用打磨装置
CN220740466U (zh) 一种重力分布均匀的打磨机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13827490

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13827490

Country of ref document: EP

Kind code of ref document: A1