CN101428397B - Angle indication amplifying mechanism of electric tool - Google Patents
Angle indication amplifying mechanism of electric tool Download PDFInfo
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- CN101428397B CN101428397B CN2008101489575A CN200810148957A CN101428397B CN 101428397 B CN101428397 B CN 101428397B CN 2008101489575 A CN2008101489575 A CN 2008101489575A CN 200810148957 A CN200810148957 A CN 200810148957A CN 101428397 B CN101428397 B CN 101428397B
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Abstract
The invention relates to an angle indicating and magnifying mechanism used for an electromotive tool, and the electromotive tool comprises a fixed component and a movable component matched with the fixed component in a rotary manner. The angle indicating and magnifying mechanism is characterized in that the angle indicating and magnifying mechanism is arranged between the fixed component and the movable component, through meshing of different gears in size therein, a gear rim is driven to move; meanwhile, the rotating angle is also magnified, for example, the movable component rotates at 30 degrees relative to the fixed component, while the rotating angle of the gear rim with scale is 2 times of the angle, which is 60 degrees; therefore, 30 degrees of angle is engraved on the scale plate in the range of 60 degrees; therefore, the distance of the identical scale values is greater than the traditional distance, which is convenient for reading, and more precise scales can be also engraved between the identical scale values so that the reading is more accurate.
Description
Affiliated technical field
The present invention relates to a kind of angle indication amplifying mechanism of electric tool, especially a kind of angle indication amplifying mechanism that is applied to electric miter saw.
Background technology
Existing electric miter saw generally comprises base, the workbench that is used for place work piece, this workbench and base rotation connect, the corner support is arranged on the workbench by rotating shaft, the saw activity is coupled on the corner support, saw comprises saw blade, reaches driving saw blade motor rotating, and corner support and saw rotate with respect to the left and right inclination of workbench around rotating shaft and realize inclined cut.In order to know the angle of left and right inclination accurately, be provided with angle indicating device toward contact, this indicating device is made up of pointer and dial, if wherein pointer is arranged on the corner support, dial just is arranged on the workbench; Pointer is arranged on the workbench, and dial just is arranged on the corner support.When the corner support rotates an angle with respect to workbench, just also turn over an identical angle with respect to dial, or turn over identical angle with respect to pointer with dial with pointer.But because corner support and workbench mating part are roughly cylindrical, its size is limited, and the corner support can be with respect to the left and right inclination of workbench, on dial, just need to show two groups of scales of left and right inclination, so the reading that is arranged on the dial is just too crowded, read inconvenience, and the precision of scale is not enough, also has influence on machining accuracy.
Summary of the invention
Main purpose of the present invention be to provide a kind of can clear, accurate angles of display, and make things convenient for the angle indication amplifying mechanism of reading.
The technical solution adopted for the present invention to solve the technical problems is: a kind of angle indication amplifying mechanism that is used for electric tool, this electric tool comprises fixed part and the movable part that connects with the fixed part activity, described angle indication amplifying mechanism comprises the fixed gear that connects at fixed part, be arranged on transmission mechanism on the movable part, be movably arranged on the gear ring with internal tooth on the movable part and be used to indicate the indicating device at angle of inclination, wherein said transmission mechanism comprise and first gear of fixed gear engagement and with second gear of gear ring engagement; Described indicating device comprises and is arranged on the pointer on the fixed part and is arranged on scale on the gear ring.
Described first gear and described fixed gear external toothing, both direction of rotation are opposite; Engagement in described second gear and the described gear ring, both direction of rotation are identical.
Described transmission mechanism further comprises transition axis, and described first gear and described second gear can be rotatably set on the described transition axis.
The direction of rotation of described gear ring is identical with described movable part.
The diameter of described gear ring is greater than the diameter of described second gear; The diameter of described fixed gear is greater than the diameter of described first gear; The diameter of described second tooth is greater than the diameter of described first gear.
The invention has the beneficial effects as follows: between fixed part and movable part, be provided with angle indication amplifying mechanism, by different big or small gear meshing wherein, when driving the gear ring motion, also amplified rotational angle, 30 degree have been rotated as movable part with respect to fixed part, and the angle that the gear ring that has scale turns over is 2 times of this angle, promptly 60 spend, on dial, engrave 30 degree like this in 60 degree scopes, make that the spacing of identical scale value is bigger than traditional spacing, be easy to reading, and between identical scale value, can also engrave more more accurate scale, thereby make reading more accurate.
Description of drawings
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the stereogram of electric miter saw of the present invention.
Fig. 2 is the phantom of the original state of electric miter saw of the present invention.
Fig. 3 is the phantom of the arrival cutting position of electric miter saw of the present invention.
Fig. 4 be electric miter saw of the present invention push the phantom of saw at cutting position.
Fig. 5 is the phantom that cuts of electric miter saw of the present invention.
Fig. 6 is along the cutaway view of A-A direction among Fig. 2.
Fig. 7 is along the cutaway view of B-B direction among Fig. 2.
Fig. 8 is the partial enlarged drawing among Fig. 1.
Fig. 9 is along the cutaway view (removing workbench) of C-C direction among Fig. 2.
Figure 10 is along the cutaway view of D-D direction among Fig. 9.
Figure 11 is the cutaway view of another angle indication enlarger in the electric miter saw of the present invention.
Figure 12 is along the cutaway view of H-H direction among Figure 11.
Figure 13 is the cutaway view of the buffer unit of electric miter saw of the present invention.
Figure 14 is the partial enlarged drawing of A position among Figure 13.
Figure 15 is the partial enlarged drawing of B position among Figure 13.
Figure 16 is the stereogram of the cutting alignment device of electric miter saw of the present invention.
Figure 17 is along the cutaway view of E-E direction among Fig. 2.
Figure 18 is the second place of second wireway of electric miter saw of the present invention.
Figure 19 is the rearview of the electric miter saw of the present invention among Fig. 1.
1. first pivot, 11. axle heads, 13. ends
14. nut 2. second pivots 21. second bearings
211. second bearing inner race, 212. second bearing outer rings, 22. second bearing caps
23. axle head 25. ends 3. the 3rd pivot
31. the 3rd bearing 32. the 3rd bearing cap 33. axle heads
35. end 37. the 3rd bearing inner race 38. the 3rd bearing outer ring
4. the 4th pivot 41. axle heads 43. ends
44. nut 5. Wushu axles 51. the 5th bearing
511. the 5th bearing inner race 512. the 5th bearing outer ring 513. outer ends
514. outer end 52. the 5th bearing cap 53. axle heads
55. end 56. nuts, 6. link assemblies
61. first connecting rod 62. second connecting rods 611,621 one ends
612,622 other ends, 613. first locking pins 615. the 4th accepting hole
617. sidewall 618. end walls 619. cross braces
7. first supporting mechanism, 70. movable parts, 8. saws
81. saw blade 82. motors 83. driving mechanisms
84. movable shield 85. handles 86. secure shroud
87. upper fixed seat 88. second locking holes 9. second supporting mechanisms
91. lower fixed seat 92. second locking pins 93. locating holes
95. fifth hole 96. third through-holes 97. fourth holes
10. workbench 100. pedestals 101. guardrails
102. rotating shaft 103. fixed parts 110. adjusting devices
200,200a indication enlarger 201. pointers 203,206a gear ring
204,204a fixed gear 205,205a pinion 206,206a gear wheel
207,207a transition axis 300. buffer units 301. piston rods
302. first cylinder cap, 303. second cylinder caps, 304. cylinder sleeves
305. piston 306. connectors 307,308 first, second pore
309. first wireway, 310. second wireways 311,312 first, second inwall
313. sealing ring 314,315 first, second shell fragment, 316. screws
The 317,318 the 3rd, the 4th pore 320. first seal cavities 321. second seal cavities
322. the other end of an end 324. second wireways of an end 323. second wireways of first wireway
325. screw 400. cutting alignment devices 401. laser generators
402. laser bench 403. laser fixed mounts 404. through holes
405. receiving space 406. slotted holes 407. through holes
408. bolt 409. adjustment screw 411. screws
412. boss 500. quadric chains
The specific embodiment
This angle indication amplifying mechanism 200 can be arranged on the electric tool, especially on electric miter saw.
Below just be that example illustrates creating conception of the present invention with the electric miter saw.
Fig. 1 to Figure 10 is the first embodiment of the present invention.As shown in Figure 1, a kind of electric miter saw comprises pedestal 100 and is arranged on guardrail 101 on the pedestal 100, is used for workbench 10, saw 8 and the jockey of place work piece.Wherein jockey is the quadric chain 500 of first supporting mechanism 7, link assembly 6, second supporting mechanism, 9 compositions; Workbench 10 rotations are coupled to pedestal 100, the angle of regulating workbench 10 relative pedestals 100 by adjusting device 110; First supporting mechanism 7 is connected by link assembly 6 with second supporting mechanism 9, and first supporting mechanism 7 connects with workbench 10 rotations, such first supporting mechanism 7 just can drive saw 8 with respect to the left and right inclination of workbench, makes electric miter saw realize inclined cut.
First, second pivot 1,2, the second supporting mechanisms 9 that first supporting mechanism 7 is provided with approximate horizontal be provided with approximate horizontal the 3rd, the 4th, Wushu axle 3,4,5, the wherein parallel and different axis settings of each pivot.
Link assembly 6 comprises first connecting rod 61 and second connecting rod 62, here wherein an end 611,621 of first, second connecting rod 61,62 is connected with first supporting mechanism 7 by first, second pivot 1,2 respectively, the other end 612,622 of first, second connecting rod 61,62 is respectively by the 4th, the 3rd pivot 4,3 are connected with second supporting mechanism 9, wherein second connecting rod 62 is a master connecting-rod, is mainly used in the motion of drivening rod assembly 6 and saw 8; First connecting rod 61 is auxilliary connecting rod, is mainly used in the level height of control link assembly 6 and saw 8, thus the length of first connecting rod 61 greater than the length of second connecting rod 62, the width of first connecting rod 61 is less than the width of second connecting rod 62.And first connecting rod 61 that will be narrower is provided with near saw 8, can reduce interference like this, has to utilize to realize that saw 8 is with respect to the left and right swing of workbench.And second connecting rod 62 is provided with near saw 8, also can realize creating conception of the present invention.As shown in figure 19, for weight reduction and reduce the cost, second connecting rod 62 is not a solid construction, is the single connecting rod of pivot shelf structure, and it has sidewall 617 and end wall 619, and has the bulk strength that cross brace 618 increases connecting rod.Same first connecting rod 61 is a similar structures.Certainly, in common knowledge for those skilled in the art, we also can be designed to first, second connecting rod respectively symmetrically arranged double link structure.
Saw 8 is connected with second supporting mechanism 9 by Wushu axle 5, and Wushu axle 5 and the 3rd, 3, the 4 parallel and disalignment settings of the 4th pivot, saw 8 has independently pivotal point like this, can do upper and lower pivoting action flexibly, is convenient to cutting.Saw 8 comprises saw blade 81, be pivotally connected to the secure shroud 86 of second supporting mechanism 9, prevent that with secure shroud 86 pivotally connected being used to sawtooth from touching the movable shield 84 of staff, and the power set (present embodiment medium power device is a motor 82) of driving saw blade 81 rotations, in order to open movable shield 84 fast, carry out cutting work, between second supporting mechanism 9 and movable shield 84, be provided with shield drive mechanism 83 (as shown in Figure 2), because saw 8 independently movings, shield drive mechanism 83 just can be a traditional structure like this, or other is simple, easy-operating structure.Between the saw 8 and second supporting mechanism 9, be provided with the stage clip (not shown) that resets.As shown in Figure 2, stage clip one end places 91 li of the lower fixed seats of second supporting mechanism 9, and the other end places 87 li of the upper fixed seats of secure shroud 86, and two ends all are respectively captured, can not slide in its holder.When saw 8 pivots downwards, compression press spring, and because the pivot of saw 8 drives the stage clip torsional deformation, and when the well cutting workpiece, saw resets under the effect of stage clip.
As shown in Figure 6, Wushu axle 5 is threaded step axle, and an end of Wushu axle 5 is provided with axle head 53 and step; The other end 55 is provided with screw thread, and second supporting mechanism 9 is provided with fifth hole 95, the Wushu axles 5 and passes fifth hole 95, can closely cooperate between the two, also can matched in clearance.Also be provided with a pair of the 5th bearing 51 and the 5th bearing clearance on the Wushu axle 5 and eliminate mechanism with respect to the saw blade symmetry, this mechanism comprises the 5th accepting hole that forms between the 5th bearing cap 52 that connects with saw 8, the 5th bearing cap 52 and the saw 8, and is connected the fixture of saw 8 and the 5th bearing cap 52, the 5th bearing 51 is contained in described the 5th accepting hole, and here fixture is the screw (not shown).The 5th bearing 51 comprises the 5th bearing inner race 511 and the 5th bearing outer ring 512, and wherein the 5th bearing inner race 511 is fixedlyed connected with Wushu axle 51, and the 5th bearing outer ring 512 is fixedlyed connected with saw 8 and the 5th bearing cap 52 simultaneously.
In assembling process, Wushu axle 5 passes fifth hole 95 and a pair of the 5th bearing 51 simultaneously, use the threaded engagement on the end 55 of nut 56 and the 5th bearing again, make the outer face 513 of one of them the 5th bearing 51 cooperate with the end face of step closely, the outer face 514 of another the 5th bearing 51 and closely cooperating of nut have been reduced the gap so in the axial direction; Then the 5th bearing cap 52 is closely linked together with saw 8 by screw (not shown), make the end face and the Wushu axle 51 of inner ring 511 of the 5th bearing 51 closely connect, the end face of the outer ring 512 of the 5th bearing 51 closely connects with saw 8 with the 5th bearing cap 52 simultaneously, is reducing the gap in the radial direction like this.
Mechanism is eliminated in similar the 5th bearing clearance, and second, third also can be provided with same structure, a concrete as description.The 3rd pivot 3 also is threaded step axle, and an end of the 3rd pivot 3 is provided with axle head 33 and step; The other end 35 is provided with screw thread, and second supporting mechanism 9 is provided with third through-hole 96, the three pivots 3 and passes third through-hole 96, can closely cooperate between the two, also can matched in clearance.Also be provided with a pair of the 3rd bearing 31 and the 3rd bearing clearance on the 3rd pivot 3 and eliminate mechanism with respect to the saw blade symmetry, this mechanism comprises and forms the 3rd accepting hole between the other end 622 of the 3rd bearing cap 32 that connects with second connecting rod 62, the 3rd bearing cap 32 and second connecting rod 62, and is connected the fixture of the other end 622 and the 3rd bearing cap 32 of second connecting rod 62, the 3rd bearing 31 is contained in the 3rd accepting hole, and here fixture is the screw (not shown).The 3rd bearing 31 comprises the 3rd bearing inner race 37 and the 3rd bearing outer ring 38, and wherein the 3rd bearing inner race 37 is fixedlyed connected with the 3rd pivot 31, and the 3rd bearing outer ring 38 fixedly connects with second connecting rod 62 with the 3rd bearing cap 32 simultaneously.
The 3rd bearing 31 is eliminated mechanism by the 3rd bearing clearance, can reduce the gap of the axial and radial direction between the second connecting rod 62 and second supporting mechanism 9 simultaneously, and its concrete operations are the same, here just do not give unnecessary details.So use bearing, can reduce the wearing and tearing between the second connecting rod 62 and second supporting mechanism 9, make entire mechanism rigidity, resistance to torsion improve greatly, with advancing also to have improved machining accuracy.
As shown in Figure 7, second pivot 2 also is threaded step axle, and an end of second pivot 2 is provided with axle head 23 and step; The other end 25 is provided with screw thread, and first supporting mechanism 7 is provided with second through hole, 71, the second pivots 2 and passes second through hole 71, can closely cooperate between the two, also can matched in clearance.Second pivot 2 is provided with and forms second accepting hole between the end 621 of second bearing cap 22 that a pair of and second connecting rod 62 connect, second bearing cap 22 and second connecting rod 62, and is connected an end (621) of second connecting rod 62 and the fixture of second bearing cap 22, second bearing 21 is contained in second accepting hole, and here fixture is the screw (not shown).Second bearing 21 comprises second bearing inner race 211 and second bearing outer ring 212, and wherein second bearing inner race 211 is fixedlyed connected with second pivot 21, and second bearing outer ring 212 is fixedlyed connected with second connecting rod 62 with second bearing cap 22 simultaneously.
Because first connecting rod 61 mainly plays maximum height limit in motion process, so can not establish bearing at its pivoting point.As shown in Figure 7, first pivot 1 is threaded step axle, and an end of first pivot 1 is provided with axle head 11 and step; The other end 13 is provided with screw thread, one end 611 of first connecting rod 61 is established a pair of first accepting hole (not shown) with respect to the saw blade symmetry, first supporting mechanism 7 is provided with the through hole concordant with first accepting hole, first pivot 1 passes first accepting hole and through hole simultaneously, when the screw thread of the end 13 of the nut 14 and first pivot closely cooperates, can reduce end play, and its radial clearance need guarantee by machining accuracy.
As shown in Figure 6, the 4th pivot 4 is threaded step axle, and an end of the 4th pivot 4 is provided with axle head 41 and step; The other end 43 is provided with screw thread, the other end 612 of first connecting rod 61 is established a pair of the 4th accepting hole 615 with respect to the saw blade symmetry, second supporting mechanism 9 is provided with the fourth hole 97 concordant with the 4th accepting hole 615, the 4th pivot 4 passes the 4th accepting hole 615 and fourth hole 97 simultaneously, when the screw thread of nut 44 and end 43 closely cooperates, can reduce end play, and its radial clearance need guarantee by machining accuracy.
As shown in Figure 8, fixed part 103 is fixedly installed on the workbench 10.Movable part 70 is fixedly installed on first supporting mechanism 7.Movable part 70 can center on rotating shaft 102 (as Fig. 9 and shown in Figure 10) and be rotatably provided on the fixed part 103.This electronic tiltedly moving saw advances one and comprises the angle indication amplifying mechanism 200 that is arranged between this fixed part 103 and the movable part 70.
To shown in Figure 10, this indication enlarger 200 comprises as Fig. 8, be fixedly installed on fixed part 103 fixed gear 204, be connected the transmission mechanism on the movable part 70 and be arranged on gear ring 203 on the movable part 70 movably.This gear ring 203 has internal tooth 209, and has scale.
Transmission mechanism is a duplicate gear, comprises with the pinion 205 of fixed gear 204 engagement with the gear wheel 206 of gear ring 203 engagements and be fixedly installed on transition axis 207 on the movable part 70.Pinion 205 and gear wheel 206 can be rotatably set on the transition axis 207.Pinion 205, gear wheel 206 and transition axis 207 are arranged between fixed part 103 and the movable part 70.Here, the diameter of gear ring 203 is greater than the diameter of gear wheel 206; The diameter of fixed gear 204 is greater than the diameter of pinion 205; The diameter of gear wheel 206 is greater than the diameter of pinion 205.
The external tooth engagement of the external tooth of pinion 205 and fixed gear 204, pinion 205 drive fixed gear 204 and rotate in the opposite direction.Internal tooth 209 engagements of the external tooth of gear wheel 206 and gear ring 203, gear wheel 206 drives gear ring 203 and rotates with equidirectional.
When saw 8 rotations, the transition axis 207 that is arranged on movable part 70 is actuated around rotating shaft 102 rotations.Simultaneously, pinion 205 driving fixed gears 204 rotate in the opposite direction.Gear wheel 206 drives gear ring 203 and rotates with equidirectional.Therefore, the direction of rotation of gear ring 203 is identical with the direction of rotation of saw 8.
So, just can be easy to reading, and between identical scale value, can also engrave more more accurate scale, thereby make reading more accurate so that the spacing of identical scale value is bigger than traditional spacing.
Figure 11 and Figure 12 are the second embodiment of the present invention, and this electric miter saw is provided with angle indication amplifying mechanism 200a between fixed part 103 and movable part 70.Wherein most of parts are identical with angle indication amplifying mechanism 200 among first embodiment.In the following description, the parts that label is identical are same as described above on design, structure and function, just do not describe in detail.
Indication enlarger 200a comprises the fixed gear 204a that is fixedly installed on the movable part 70, be connected the transmission mechanism on the fixed part 103 and be arranged on gear ring 203a on the fixed part 103 movably.
Transmission mechanism among the transmission mechanism and first embodiment is very similar.This transmission mechanism comprises with the pinion 205a of fixed gear 204a engagement with the gear wheel 206a of gear ring 203a engagement and be fixedly installed on transition axis 207a on the fixed part 103.
When saw 8 rotations, the fixed gear 204a that is arranged on movable part 70 is actuated around rotating shaft 102 rotations.Simultaneously, fixed gear 204a driving pinion 205a rotates in the opposite direction.Gear wheel 206a drives gear ring 203a and rotates with equidirectional.The direction of rotation of pinion 205a is identical with the direction of rotation of gear wheel 206a.Therefore, the direction of rotation of gear ring 203a is opposite with the direction of rotation of saw 8.
So, just can be easy to reading, and between identical scale value, can also engrave more more accurate scale, thereby make reading more accurate so that the spacing of identical scale value is bigger than traditional spacing.
Referring to Fig. 1, produce impact at the volley in order to reduce link assembly 6, bring operational uncomfortable to the operator.This electric miter saw is provided with buffer unit 300 between first connecting rod 61 and second connecting rod 62, this buffer unit 300 can adopt air spring also can adopt cylinder, and buffer unit 300 is cylinders in the present embodiment.As shown in figure 13, this cylinder comprises piston rod 301, the piston 305 that connects with it, cylinder sleeve 304, the connector 306 that connects with cylinder sleeve 304, first, second cylinder cap 302,303, wherein cylinder sleeve 304 passes through connector 306 and second connecting rod 62 pivotally connected (as shown in Figure 2), piston rod 301 mobilizable second cylinder caps 303 and first connecting rods 61 pivotally connected (as shown in Figure 2) that pass.In order to guarantee can not leak gas between the piston rod 301 and second cylinder cap 303, between is provided with sealing ring 313.Cylinder sleeve 304 has cylinder shape inner wall 312, and the slightly larger in diameter of piston 305 still is made up of the rubber elastomeric material in the diameter of inwall 312, and piston 305 both can slide along inwall 312 like this, also can be attached to closely on the inwall 312, can not leak gas.The upper surface of the inwall 312 of cylinder sleeve 304 and first cylinder cap 302 and piston 305 has been formed first seal cavity 320; The inwall 312 of cylinder sleeve 304 and the lower surface of piston 305 have been formed second seal cavity 321.
Be provided with first, second pore 307,308 on first, second cylinder cap 302,303, wherein first pore 307 connects first seal cavity 320 and the external world; Second pore 308 connects second seal cavity 321 and the external world.On first, second pore 307,308, also be connected with an end 322,323 of first, second wireway 309,310.Wireway is a flexible pipe, and the other end of first, second wireway 309,310 can be arranged in the second connecting rod 62 with through hole, also can be arranged on other any suitable position.Here wireway is an air inlet pipe, also is escape pipe, when being escape pipe, the air of discharging can be blowed to laser generator 401, prevents the sawdust laser aid of making dirty.This can specifically describe in the back.
Also pivotally connected on first, second inwall 311,312 of first, second cylinder cap 302,303 have first, second shell fragment 314,315, as Figure 14 and shown in Figure 15, first shell fragment 314 is by being connected on first inwall 311 that a screw 316 pivots, and same second shell fragment 315 is also by being connected on second inwall 312 that screw 325 pivots.On first shell fragment 314, be provided with and the diameter of the 3rd pore 317, the three pores 317 of first pore, 307 conductings diameter less than first pore 307; On second shell fragment 315, be provided with and the diameter of the 4th pore 318, the four pores 318 of second pore, 308 conductings diameter less than second pore 308.
As shown in figure 13, when piston rod 301 drives pistons 305 when the E direction is upwards slided, the air of piston 305 extruding first seal cavity 320, make air pass through first pore 307 and first wireway 309 discharge slowly from the 3rd pore 317, thereby play cushioning effect, at this moment first wireway 309 is an escape pipe; And because the upwards slip of piston 305, make the pressure of second seal cavity 321 diminish, the air of outside passes second wireway 310, make second shell fragment 315 around screw 325 rotations, thereby make between second shell fragment 315 and second inwall 312 and produce the space, air can constantly enter, and at this moment second wireway 310 is an air inlet pipe.
Otherwise, when driving pistons 305, piston rod 301 is directed downwards when sliding along F, the air of piston 305 extruding second seal cavity 321, make air pass through second pore 308 and second wireway 310 discharge slowly from the 4th pore 318, thereby play cushioning effect, at this moment second wireway 310 is an escape pipe; And since piston 305 to lower slider, the pressure of the seal cavity 320 of winning is diminished, the air of outside passes first wireway 309, make first shell fragment 314 around screw 316 rotations, thereby make between first shell fragment 314 and first inwall 311 and produce the space, air can constantly enter, and at this moment first wireway 309 is an air inlet pipe.
Referring to Fig. 1, for alignment pieces accurately, avoid the trouble of tool setting, and influence cutting accuracy.This electric miter saw on first connecting rod 61 roughly the centre position be provided with cutting alignment device 400, certainly, the installation site of cutting alignment device 400 can be according to the design needs, design is at diverse location.
As Figure 16 and shown in Figure 17, cutting alignment device 400 comprises the laser generator 401 of launching laser, support the laser bench 402 of this laser generator 401, and laser bench 402 is installed in laser fixed mount 403 on the first connecting rod 61, laser bench 402 is provided with cylindrical receiving space 405 and accommodates laser generator 401, and receiving space 405 is provided with collar (not label) on diametric(al), laser generator 401 can only axially be rotated and can not move axially, and on laser bench 402, be provided with through hole 404, the holding screw (not shown) passes this through hole, limits rotatablely moving of laser generator 401.And laser bench 402 is fixed together by screw 411 and laser fixed mount 403, and laser fixed mount 403 and laser bench 402 also can be integrally formed certainly.
Laser fixed mount 403 is provided with two slotted holes 406 of symmetry, first connecting rod 61 is provided with corresponding two through holes 407, two bolts 408 pass slotted hole 406 and through hole 407 respectively, by with cooperating of nut and packing ring laser fixed mount 403 being fixed on the first connecting rod 61.
The two ends of laser fixed mount 403 are arranged with two 412, two adjustment screw 409 of round boss that have a through hole and pass this through hole respectively and contact with two sides of first connecting rod 61.
Because the laser rays that laser generator 401 emits often can not overlap with line of cut, so in assembling process, need regulate laser rays.When the laser rays that emits and line of cut have deviation on respect to Wushu axis direction, at first unscrew two bolts 408, again by two adjustment screw 409 of rotation, so just can promote laser fixed mount 403 related laser generators 401 moves with respect to connecting rod together, after being adjusted to desired location, screw bolt 408 again, laser fixed mount 403 is firmly secured on the connecting rod 61; And when the not parallel generation of laser rays that emits and line of cut intersects, this just need unscrew holding screw 404, the rotary laser generator 401 again, make it with respect to laser bench 402 rotations, after being adjusted to desired location, screw holding screw 404 again, laser generator 401 is firmly secured on the laser bench 402.
In cutting process, the sawdust of generation can be made dirty and cut alignment device 400, and the laser rays that makes cutting alignment device 400 emit thickens, and has influence on cutting accuracy.And, it can be arranged on any position because first, second wireway 309,310 is a flexible pipe.In the present invention's design, as shown in figure 18, the other end 324 of second wireway 310 can be passed the position setting of first connecting rod 61 facing to cutting alignment device 400, like this, when second wireway 310 is blast pipe, just can blow the sawdust that flies to laser generator 401 off, prevent the sawdust laser generator 401 of making dirty with the air of discharging.The other end of first wireway 309 can certainly be provided with (not shown) equally.
During work, at first the line of cut on the workpiece is alignd with the laser rays that cutting alignment device 400 emits, operating grip 85 then, as shown in Figure 2, make first, second connecting rod 61,62 respectively around the rotation of first, second pivot 1,2 clockwise direction, drive second supporting mechanism 9 and saw 8 to the right (front side of this electric miter saw) move; In motion process to the right, piston rod 301 drives pistons 305 when the E direction is upwards slided, the air of piston 305 extruding first seal cavity 320, thus make air play cushioning effect (can referring to Figure 13) by first pore 307 and first wireway 309 discharge slowly from the 3rd pore 317.
Move to cutting position to the right, as shown in Figure 3, at this moment press down saw 8, make saw 8 around 5 rotations of Wushu axle, arrive Fig. 4 position, and in the process of pressing down, movable shield 84 with respect to secure shroud 86 rotation counterclockwise, is exposed saw blade 81 under the driving of shield drive mechanism 83; Thereafter, by operator's operating grip 85, make second connecting rod 62 around second pivot 21 rotation counterclockwise, like this, saw blade 81 moves cut workpiece to the left, moves to Fig. 5 position.
In motion process to the left, piston rod 301 drives pistons 305 and is directed downwards when sliding along F, the air of piston 305 extruding second seal cavity 321, make air from of the other end 324 slowly the discharge of the 4th pore 318 by second pore 308 and second wireway 310, thereby play cushioning effect (can referring to Figure 13), and the air that the other end 324 of second wireway 310 is discharged blows to the laser generator 401 that cuts alignment device 400, avoid laser generator 401 in cutting process, influence cutting accuracy because the sawdust that produces is made dirty.And at saw blade 81 to the left in the moving process, the other end 622 of second connecting rod 62 is roughly arc moving, but under the effect of first connecting rod 61, second supporting mechanism 9 and saw 8 along continuous straight runs together move, move cut workpiece to the left so saw blade 81 also is a general horizontal direction, behind the cutting finished piece(s), decontrol operating grip 85, saw 8 resets under the stage clip effect, and whole electric miter saw is returned to original state as shown in Figure 2.Like this, the workpiece of the just convenient cutting broad of this electric miter saw, and the workpiece of different in width.
Cut sth. askew when cutting as needs, can be earlier with first supporting mechanism 1 with respect to workbench 10 rotations, make it arrive required cutting angle of cutting sth. askew, and then according to above-mentioned step operation.
Certainly, in some use occasion, when not needing saw 8 to move forward and backward, this electric miter saw also can be used as traditional inclined cutting saw and use.As shown in Figure 2, electric miter saw also is provided with first locking pin 613 on first connecting rod 61, on second supporting mechanism 9, be provided with locating hole 93, as first locking pin 613 is cooperated with locating hole 93, just the first connecting rod 61 and second supporting mechanism 9 can be fixed together, make first, second connecting rod 61,62 can not be around long-pending pivot 1 separately, 2 pivot, and this moment, 8 of saws moved pivotally up and down around Wushu axle 5, thereby realize the function of traditional inclined cutting saw.
And carrying of electric miter saw for convenience and minimizing packaging volume.As shown in Figure 2, on second supporting mechanism 9, also be provided with second locking pin 92, on saw 8, be provided with second locking hole 88 that cooperates with second locking pin 92, on second supporting mechanism 9, also be provided with the first locking hole (not shown) that cooperates with first locking pin 613.When carrying or depositing as need, as shown in Figure 1, first locking pin 613 is placed first locking hole, fixedly first connecting rod 61 is with respect to the position of second supporting mechanism 9; Second locking pin 92 places second locking hole 88, and this electric miter saw can conveniently be carried or deposit in stationary saw mechanism 8 so just with respect to the position of second supporting mechanism 9.
The above embodiments only are the most preferred embodiments that provides in order to allow those skilled in the art understand the present invention.The present invention is not limited in above-mentioned specific embodiment.Any those skilled in the art easily full of beard and improvement all within inventive concept of the present invention.
Claims (6)
1. angle indication amplifying mechanism that is used for electric tool, this electric tool comprises fixed part and the movable part that connects with the fixed part activity, it is characterized in that: described angle indication amplifying mechanism comprises the fixed gear that connects at fixed part, be arranged on transmission mechanism on the movable part, be movably arranged on the gear ring with internal tooth on the movable part and be used to indicate the indicating device at angle of inclination, wherein said transmission mechanism comprise and first gear of fixed gear engagement and with second gear of gear ring engagement; Described indicating device comprises and is arranged on the pointer on the fixed part and is arranged on scale on the gear ring.
2. angle indication amplifying mechanism according to claim 1 is characterized in that: described transmission mechanism is a duplicate gear, and described first gear and described second gear connect.
3. angle indication amplifying mechanism according to claim 1 is characterized in that: described first gear and described fixed gear external toothing, and both direction of rotation are opposite; Engagement in described second gear and the described gear ring, both direction of rotation are identical.
4. angle indication amplifying mechanism according to claim 1 is characterized in that: described transmission mechanism further comprises transition axis, and described first gear and described second gear can be rotatably set on the described transition axis.
5. angle indication amplifying mechanism according to claim 1 is characterized in that: the direction of rotation of described gear ring is identical with described movable part.
6. angle indication amplifying mechanism according to claim 1, it is characterized in that: described electric tool is electronic inclined cutting saw, described electric miter saw comprises and is used for the workbench of supporting workpiece, the supporting mechanism that connects with workbench and the saw that connects with supporting mechanism, wherein said saw comprises saw blade and drives the power set of saw blade rotation, described fixed part is a workbench, and described movable part is a supporting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101489575A CN101428397B (en) | 2007-09-13 | 2008-09-12 | Angle indication amplifying mechanism of electric tool |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710132388.0 | 2007-09-13 | ||
| CN200710132388 | 2007-09-13 | ||
| CN2008101489575A CN101428397B (en) | 2007-09-13 | 2008-09-12 | Angle indication amplifying mechanism of electric tool |
Publications (2)
| Publication Number | Publication Date |
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| CN101428397A CN101428397A (en) | 2009-05-13 |
| CN101428397B true CN101428397B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101489575A Expired - Fee Related CN101428397B (en) | 2007-09-13 | 2008-09-12 | Angle indication amplifying mechanism of electric tool |
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| Country | Link |
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| CN (1) | CN101428397B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615345B (en) * | 2011-01-30 | 2014-04-16 | 苏州宝时得电动工具有限公司 | Cutting machine |
| CN109500448A (en) * | 2017-09-15 | 2019-03-22 | 南京搏峰电动工具有限公司 | Mitre saw |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2271425Y (en) * | 1996-08-20 | 1997-12-31 | 黄光正 | Cut-off machine structure with changeable angle |
| CN2407865Y (en) * | 2000-02-01 | 2000-11-29 | 胡文贤 | Circular sawing machine of improved angle regulation structure |
| CN1868647A (en) * | 2005-05-27 | 2006-11-29 | 日立工机株式会社 | Miter saw having compact gear case at cutting portion |
| CN201091994Y (en) * | 2007-09-18 | 2008-07-30 | 苏州宝时得电动工具有限公司 | Angle-indication amplifier for electric tools |
-
2008
- 2008-09-12 CN CN2008101489575A patent/CN101428397B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2271425Y (en) * | 1996-08-20 | 1997-12-31 | 黄光正 | Cut-off machine structure with changeable angle |
| CN2407865Y (en) * | 2000-02-01 | 2000-11-29 | 胡文贤 | Circular sawing machine of improved angle regulation structure |
| CN1868647A (en) * | 2005-05-27 | 2006-11-29 | 日立工机株式会社 | Miter saw having compact gear case at cutting portion |
| CN201091994Y (en) * | 2007-09-18 | 2008-07-30 | 苏州宝时得电动工具有限公司 | Angle-indication amplifier for electric tools |
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|---|---|
| CN101428397A (en) | 2009-05-13 |
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