CN101347847B - Electric miter saw - Google Patents
Electric miter saw Download PDFInfo
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- CN101347847B CN101347847B CN200710024202XA CN200710024202A CN101347847B CN 101347847 B CN101347847 B CN 101347847B CN 200710024202X A CN200710024202X A CN 200710024202XA CN 200710024202 A CN200710024202 A CN 200710024202A CN 101347847 B CN101347847 B CN 101347847B
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Abstract
The invention discloses an electric miter saw, comprising a workbench, a first supporting mechanism, a link assembly, a second supporting mechanism and a saw mechanism. The first supporting mechanism is connected with the second supporting mechanism by the link assembly, the link assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and the second connecting rod is connected with the first supporting mechanism by a first pivot and a second pivot respectively. The other end of the first connecting rod and the second connecting rod is connected with the second supporting mechanism by a third pivot and a fourth pivot respectively, and the saw mechanism is connected with the second supporting mechanism by a fifth pivot. The saw mechanism has an independent pivot, the up-and-down motion of pivot becomes easy and convenient for operating; and the driving mechanism of a guard shield can also be mounted between the first supporting mechanism and the saw mechanism, thus leading the structure to become simple and compact; and owing to the use of bearings at the pivot point and the arrangement of bearing covers, the bearing clearance and the mechanism clearance can be reduced, thus leading to better rigidity and torsion property for the whole mechanism, as well as improving the accuracy.
Description
Affiliated technical field
The present invention relates to a kind of electric miter saw, the electric mitre saw that especially a kind of saw blade can move in the horizontal direction.
Background technology
The prior electric mitre saw generally is divided into inclined cutting saw, slip inclined cutting saw or the like.And the saw blade of inclined cutting saw can not move in the horizontal direction; Like this for the workpiece of broad workpiece or different in width; Want to cut off just very inconvenient; So for saw blade can move in the horizontal direction, the workpiece of convenient cutting broad and different in width must use the slip inclined cutting saw.
Like U.S.'s bulletin patent No. 5060548 a kind of slip inclined cutting saw is disclosed; The corner support of this slip inclined cutting saw is provided with two holes; This slip inclined cutting saw also is provided with two one slide rails respectively through these two holes, and an end of two one slide rails connects saw, passes through the cooperation in slide rail and hole like this; Just can drive saw blade and slide in the horizontal direction, cut the workpiece of different in width.But this slip cast-cutting saw can conveniently slide in order to make slide rail, between hole and slide rail, also must be provided with bobbin and hold, and bobbin holds the comparison costliness; And the slide rail accuracy of manufacture requires also very high, also must increase cost through Overheating Treatment.
To this; Industry staff has also carried out some improvement; Like U.S.'s bulletin patent No. 5257570 a kind of electric miter saw is disclosed; This electric miter saw comprises the pivotable supporting mechanism that is installed on the base, and this supporting mechanism is provided with first hinge member, and an end of main support link and an end of stationary links are installed on this hinge member.The middle part of saw is connected with the other end of main support link through second hinge member.Have a limiting rod shorter than main support link, this limiting rod is connected on the other end of stationary links through the 3rd hinge member.Limiting rod is provided with a slotted hole, and the engagement limits connecting rod through pin and slotted hole is connected with saw.First hinge member also has first wind spring, and this first wind spring promotes main support link first hinge member clockwise direction rotation, and second hinge member also has second wind spring, and this second wind spring promotes saw counterclockwise to rotate around second hinge member.
During work, saw overcomes the power of second wind spring around the rotation of second hinge member.Because an end of saw is connected with limiting rod, the rotating part of saw is limited in a predetermined value.Thereafter, through operator's operating grip, make main support link around the rotation of the first hinge member clockwise direction, like this, saw blade moves cut workpiece to the left.To the left in the moving process, link assembly also moves together, so hinge fraction is arc moving at saw blade.But, because the end of saw is connected on the limiting rod, saw blade the lower position approximate horizontal.Thereby, in this case, when saw to pressing down when mobile,, saw blade moves on general horizontal direction.
Effect saw through second wind spring counterclockwise rotates around second hinge member, and the main support link of effect through first wind spring in rotary course is rotated around the first hinge member clockwise direction, so just can arrive initial position.
Because saw, main support link, limiting rod and stationary links have formed the quadric chain of a more complicated; Make the independently upper and lower pivoting action of saw become complicated; And be provided with the wind spring of adverse effect at the two ends of main support link; Also can make to keep the wind spring difficulty that under good duty, becomes, and saw and other connecting rod form quadric chain and also make the shield drive mechanism complicacy that becomes.The pivoting point of adding this quadric chain all is the cooperation in pin and hole, because gapped between the cooperation in pin and hole, makes entire mechanism rigidity, resistance to torsion relatively poor; And after the working time grown; Pin and Kong Douhui wearing and tearing, gap between the two is increasing, influences machining accuracy.
Summary of the invention
Main purpose of the present invention is to provide a kind of electric miter saw simple in structure, compact, easy to operate.
Another object of the present invention is to provide a kind of rigidity, resistance to torsion better, the electric miter saw that precision is higher.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electric miter saw; Comprise and be used for workbench, first supporting mechanism, link assembly, second supporting mechanism and the saw of place work piece; Wherein said first supporting mechanism and workbench connect; First supporting mechanism is connected with second supporting mechanism through link assembly; Said first supporting mechanism is provided with first, second pivot of level, and an end of said link assembly is connected with first supporting mechanism through said first, second pivot, and the 3rd, the 4th pivot of level is arranged on said second supporting mechanism; The other end of said link assembly is connected with second supporting mechanism through said the 3rd, the 4th pivot; Said saw comprises saw blade and drives the power set of saw blade rotation that also have the Wushu axle of level on said second supporting mechanism, said saw is connected with said second supporting mechanism through said Wushu axle.
The further scheme of the present invention is to be provided with a pair of the 5th bearing with respect to the saw blade symmetry between said saw and the Wushu axle.
Be provided with a pair of second bearing between one end of said second connecting rod and said first supporting mechanism, be provided with a pair of the 3rd bearing between the other end of said second connecting rod and said second supporting mechanism with respect to the saw blade symmetry with respect to the saw blade symmetry.
For reading clearly, between said workbench and said first supporting mechanism, be provided with angle indication amplifying mechanism.
Produce impact at the volley in order to reduce link assembly, between said first connecting rod and second connecting rod, be provided with buffer unit.On said first connecting rod, also be provided with the cutting alignment device.And the exhaust outlet of buffer unit is towards cutting alignment device setting, can prevent the sawdust cutting alignment device of making dirty like this.
The invention has the beneficial effects as follows: first supporting mechanism, first, second connecting rod and second supporting mechanism have formed a simple quadric chain; Make saw have relatively independent pivotal axis; The upper and lower pivoting action of saw just becomes simply like this, handled easily; And can shield drive mechanism be installed between first supporting mechanism and the saw, make simple in structure, compact; Add at pivoting point and use bearing, and be provided with bearing cap, so just can reduce the gap between bearing clearance and the mechanism, make entire mechanism rigidity, resistance to torsion better, the raising precision.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
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 the buffer unit of electric miter saw of the present invention.
Figure 12 is the partial enlarged drawing of A position among Figure 11.
Figure 13 is the partial enlarged drawing of B position among Figure 11.
Figure 14 is the stereogram of the cutting alignment device of electric miter saw of the present invention.
Figure 15 is along the cutaway view of E-E direction among Fig. 2.
Figure 16 is the second place of second wireway of electric miter saw of the present invention.
Figure 17 is the rearview of the electric miter saw of the present invention among Fig. 1.
Wherein:
1. first pivot, 11. axle heads, 12. steps
13. end 14. nuts, 2. second pivots
21. second bearing, 211. second bearing inner races, 212. second bearing outer rings
22. second bearing cap, 23. axle heads, 24. steps
25. end 3. the 3rd pivot 31. the 3rd bearing
32. the 3rd bearing cap 33. axle heads 34. steps
35. end 37. the 3rd bearing inner race 38. the 3rd bearing outer ring
4. the 4th pivot 41. axle heads 42. steps
43. end 44. nuts, 5. Wushu axles
51. the 5th bearing 511. the 5th bearing inner race 512. the 5th bearing outer ring
513,514 outer ends 52. the 5th bearing cap 53. axle heads
54. end face 55. ends of step 541. steps
56. nut 6. link assemblies 61. first connecting rods
62. second connecting rod 611,621 one ends 612,622 other ends
613. first locking pin 615. the 4th accepting hole, 617. sidewalls
618. end wall 619. cross braces 7. first supporting mechanisms
8. saw 81. saw blades 82. motors
83. driving mechanism 84. movable shield 85. handles
86. secure shroud 87. upper fixed seats 88. second locking holes
9. second supporting mechanism, 91. lower fixed seats, 92. second locking pins
93. locating hole 95. fifth holes 96. third through-holes
97. fourth hole 10. workbench 100. pedestals
200. indication enlarger 201. pointers 203. gear rings
204. fixed gear 205. pinions 206. gear wheels
207. 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
As shown in Figure 1; A kind of electric miter saw; Comprise pedestal 100, be used for workbench 10, saw 8 and the jockey of place work piece, wherein jockey is the quadric chain 500 that first supporting mechanism 7, link assembly 6, second supporting mechanism 9 are formed, and workbench 10 rotations are coupled to pedestal 100; First supporting mechanism 7 is connected through link assembly 6 with second supporting mechanism 9; And first supporting mechanism 7 connects with workbench 10 rotations, and 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 through first, second pivot 1,2 respectively; The other end 612,622 of first, second connecting rod 61,62 is respectively through the 4th, the 3rd pivot 4; 3 are connected with second supporting mechanism 9, and 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.Shown in figure 17, 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, for being total to, those skilled in the art know that we also can be designed to symmetrically arranged double link structure respectively with first, second connecting rod.
Saw 8 is connected with second supporting mechanism 9 through 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, and pivotal connection is in the secure shroud 86 of second supporting mechanism 9, with secure shroud 86 pivotal connections be used to prevent that sawtooth from touching the safety guard 84 of staff; And the power set (present embodiment medium power device is a motor 82) of driving saw blade 81 rotations; For can quick-opening safe guard shield 84, carry out cutting work, between second supporting mechanism 9 and safety guard 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 in its holder, not slide.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 54; 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 said 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 fixedly connected with Wushu axle 51, and the 5th bearing outer ring 512 is fixedly 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 541 of step closely, the outer face 514 of another the 5th bearing 51 and closely cooperating of nut have been reduced the gap like this on axial direction; Then the 5th bearing cap 52 is closely linked together with saw 8 through 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 34; 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 fixedly 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 24; 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.Form second accepting hole between one end 621 of second bearing cap 22 that second pivot 2 is provided with that a pair of and second connecting rod 62 connect, second bearing cap 22 and second connecting rod 62, and be 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 fixedly connected with second pivot 21, and second bearing outer ring 212 is fixedly connected with second connecting rod 62 with second bearing cap 22 simultaneously.
Second bearing 21 is eliminated mechanism by second bearing clearance, can reduce the gap of the axial and radial direction between the second connecting rod 62 and first supporting mechanism 7 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.
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 12; 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, and 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 42; 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 4th accepting hole 615 concordant fourth hole 97, the four pivots 4 and 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.
Referring to Fig. 1, first supporting mechanism 7 makes electric miter saw realize inclined cut with respect to workbench 10 left and right inclinations again.The angle indicating device of traditional mitre saw, its dial are arranged on corner support and the circumference that workbench is connected, because the restriction of structure, general scale is too close, too little, is not easy reading; And scale is also less, inaccurate.Set the inclination angle of first supporting mechanism 7 for ease, accurately, improve cutting accuracy, between the workbench 10 and first supporting mechanism 7, be provided with angle indication amplifying mechanism 200 with respect to workbench 10.
Extremely shown in Figure 10 like Fig. 8; This indication enlarger 200 comprises; Be movably arranged on the gear ring 203 of band dial between the workbench 10 and first supporting mechanism 7, be fixedly set in the pointer 201 on the workbench 10, with the fixed gear 204 of first supporting mechanism 7 with respect to the coaxial setting of rotation of workbench 10; Be installed in the transition axis 207 on first supporting mechanism 7, reach duplicate gear with respect to these transition axis 207 rotations.This duplicate gear comprises and the pinion 205 of fixed gear 204 engagements and the gear wheel 206 that meshes with gear ring 203.Fixed gear 204 is fixedly connected on the workbench 10, because first supporting mechanism 7 is in certain scope with respect to the rotation of workbench, is generally left and right 45 degree, so fixed gear 204 can be designed to sector gear here.
When first supporting mechanism 7 rotates an angle a with respect to workbench 10; The transition axis 207 that is fixed on first supporting mechanism 7 also can be along with rotation, and at this moment pinion 205 meshes with fixed gear 204, gear wheel 206 and gear ring 203 engagements; Thereby drive gear ring 203 rotations; The dial that is fixedly mounted on the gear ring 203 also arrives an angle with regard to and then rotating, but because of already there being certain functional relation (known for the industry designer, as just not give unnecessary details) between them here; The angle that the gear ring 203 of this band dial turns over is the i multiple of first supporting mechanism 7 with respect to workbench rotational angle a, i.e. ia.So the angular range at ia on the dial engraves a angle, the traditional dial of the scale ratio that can be provided with is close like this, thereby makes reading just more accurate, and also reading easily.
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.Shown in figure 11; 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 pivotal connections (as shown in Figure 2), piston rod 301 mobilizable second cylinder caps 303 and first connecting rod 61 pivotal connections (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 somewhat 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.
On first, second cylinder cap 302,303, be provided with first, second pore 307,308, 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, can the air of discharging be blowed to laser generator 401, prevents the sawdust laser aid of making dirty.This can specifically describe in the back.
Go back pivotal connection on first, second inwall 311,312 of first, second cylinder cap 302,303 first, second shell fragment 314,315 is arranged; Like Figure 12 and shown in Figure 13; First shell fragment 314 is connected on first inwall 311 through what a screw 316 pivoted, and same second shell fragment 315 also is connected on second inwall 312 through what screw 325 pivoted.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.
Shown in figure 11; 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, makes second shell fragment 315 around screw 325 rotations, produces the space thereby make between second shell fragment 315 and second inwall 312; Air can constantly get into, 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, makes first shell fragment 314 around screw 316 rotations, produces the space thereby make between first shell fragment 314 and first inwall 311; Air can constantly get into, 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 design demand, design is at diverse location.
Like Figure 14 and shown in Figure 15; Cutting alignment device 400 comprises the laser generator 401 of launching laser, supports the laser bench 402 of this laser generator 401, and laser bench 402 is installed in the 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 through screw 411 and laser fixed mount 403, and laser fixed mount 403 also can be integrally formed with laser bench 402 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, through 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 through the rotation two adjustment screw 409, so just can promote laser fixed mount 403 related laser generators 401 and move with respect to connecting rod together, be adjusted to desired location after; The bolt 408 of screwing again is firmly secured on the connecting rod 61 laser fixed mount 403; 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 rotation, be adjusted to desired location after; The holding screw 404 of screwing again is firmly secured on the laser bench 402 laser generator 401.
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, can it be arranged on any position because first, second wireway 309,310 is a flexible pipe.In the present invention's design; Shown in figure 16; Can the other end 324 of second wireway 310 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.Can certainly the other end of first wireway 309 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, and is 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; Make air from the 3rd pore 317 through first pore 307 and first wireway 309 discharge slowly, thereby play cushioning effect (can referring to Figure 11).
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, through 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, thereby play cushioning effect (can referring to Figure 11), 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 through second pore 308 and second wireway 310; Avoid laser generator 401, influence cutting accuracy because the sawdust that in cutting process, produces is made dirty.And to the left in the moving process, the other end 622 of second connecting rod 62 is roughly arc moving at saw blade 81, but under the effect of first connecting rod 61; Second supporting mechanism 9 moves with saw 8 along continuous straight runs together; 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 like 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 procedure.
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, is provided with locating hole 93; As first locking pin 613 is cooperated with locating hole 93, just can the first connecting rod 61 and second supporting mechanism 9 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 ease 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 like 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 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 to it will be apparent to those skilled in the art that the present invention and provide in order to let.The present invention is not limited in above-mentioned concrete embodiment.Any those skilled in the art easy full of beard and improvement all within inventive concept of the present invention.
Claims (10)
1. electric miter saw comprises being used for workbench (10), first supporting mechanism (7), link assembly (6), second supporting mechanism (9) and the saw (8) of place work piece that wherein said first supporting mechanism (7) connects with workbench (10); First supporting mechanism (7) is connected with second supporting mechanism (9) through link assembly (6), and said first supporting mechanism (7) is provided with first, second pivot (1,2) of level; The the 3rd, the 4th pivot (3,4) of level is arranged on said second supporting mechanism (9), and said link assembly (6) comprises first connecting rod (61) and second connecting rod (62); One end (611,621) of said first, second connecting rod (61,62) is respectively through said first, second pivot (1; 2) be connected with said first supporting mechanism (7); The other end (612,622) of said first, second connecting rod (61,62) is respectively through said the 3rd, the 4th pivot (3; 4) be connected with second supporting mechanism (9); Said saw (8) comprises saw blade (81) and drives the power set of saw blade rotation, it is characterized in that: said second supporting mechanism (9) is gone up the Wushu axle (5) of level in addition, and said saw (8) is connected with said second supporting mechanism (9) through said Wushu axle (5); First connecting rod (61) is to assist the connecting rod setting near said saw, and the width of said first connecting rod (61) is less than the width of said second connecting rod (62).
2. electric miter saw according to claim 1 is characterized in that: the length of said first connecting rod (61) is greater than the length of said second connecting rod (62).
3. electric miter saw according to claim 1 is characterized in that: said second, third, respectively be provided with on the Wushu axle (2,3,5) a pair of with respect to the saw blade symmetry second, third, the 5th bearing (21,31,51).
4. electric miter saw according to claim 3 is characterized in that: said second, third, at least one pivot is provided with the bearing clearance and eliminates mechanism in the Wushu axle (2,3,5).
5. electric miter saw according to claim 4; It is characterized in that: said bearing clearance is eliminated the 5th accepting hole that mechanism comprises formation between the 5th bearing cap (52) that connects with saw (8), the 5th bearing cap (52) and the saw (8), is reached the fixture that is connected saw (8) and the 5th bearing cap (52), and said the 5th bearing (51) is contained in said the 5th accepting hole.
6. electric miter saw according to claim 4; It is characterized in that: said bearing clearance is eliminated formation second accepting hole between the end (621) that mechanism comprises second bearing cap (22) that connects with second connecting rod (62), said second bearing cap (22) and second connecting rod (62), is reached the fixture of the end (621) and second bearing cap (22) that are connected second connecting rod (62), and said second bearing (21) is contained in said second accepting hole.
7. electric miter saw according to claim 4; It is characterized in that: said bearing clearance is eliminated formation the 3rd accepting hole between the other end (622) that mechanism comprises the 3rd bearing cap (32) that connects with second connecting rod (62), said the 3rd bearing cap (32) and second connecting rod (62), is reached the fixture of the other end (622) and the 3rd bearing cap (32) that are connected second connecting rod (62), and said the 3rd bearing (31) is contained in the 3rd accepting hole.
8. electric miter saw according to claim 1 is characterized in that: between said workbench (10) and said first supporting mechanism (7), be provided with angle indication amplifying mechanism (200).
9. electric miter saw according to claim 1 is characterized in that: between said first connecting rod (61) and second connecting rod (62), be provided with buffer unit (300).
10. electric miter saw according to claim 9; It is characterized in that: on said first connecting rod (61), also be provided with cutting alignment device (400); Said buffer unit (300) is provided with exhaust outlet, and said cutting alignment device (400) is arranged at the position near exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710024202XA CN101347847B (en) | 2007-07-21 | 2007-07-21 | Electric miter saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710024202XA CN101347847B (en) | 2007-07-21 | 2007-07-21 | Electric miter saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101347847A CN101347847A (en) | 2009-01-21 |
| CN101347847B true CN101347847B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710024202XA Expired - Fee Related CN101347847B (en) | 2007-07-21 | 2007-07-21 | Electric miter saw |
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| Country | Link |
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| CN (1) | CN101347847B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154159A (en) * | 2019-04-22 | 2019-08-23 | 贾慧静 | Diagonal cutting saw with speed-regulating function |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806389B (en) * | 2008-10-24 | 2015-09-09 | 苏州宝时得电动工具有限公司 | Cutting machine |
| CN101920375B (en) * | 2010-09-27 | 2012-10-17 | 无锡华联科技集团有限公司 | Oscillating anti-backlash mechanism for five-axis steel pipe intersection line cutting machine |
| CN102615344B (en) * | 2011-01-30 | 2014-04-16 | 苏州宝时得电动工具有限公司 | Cutting machine |
| CN102756170B (en) * | 2011-04-29 | 2015-03-11 | 苏州宝时得电动工具有限公司 | Oblique saw |
| CN103706875B (en) * | 2012-09-28 | 2016-03-16 | 苏州宝时得电动工具有限公司 | Cutting machine |
| CN103465309A (en) * | 2013-08-28 | 2013-12-25 | 江军 | Obliquely-standing type wood-cutting machine |
| RU2664319C2 (en) * | 2013-12-11 | 2018-08-16 | Роберт Бош Гмбх | Trimmer saw with chain belt |
| CN109332788B (en) * | 2018-11-21 | 2019-12-17 | 东台市高科技术创业园有限公司 | Metal cutting device based on coil spring |
| CN112917357B (en) * | 2021-01-22 | 2022-02-18 | 广州双锐智能设备有限公司 | Cutting machine capable of realizing beveling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257570A (en) * | 1990-07-16 | 1993-11-02 | Ryobi Limited | Circular saw unit |
| US5564323A (en) * | 1994-03-07 | 1996-10-15 | Makita Corporation | Circular saw unit |
| CN1974092A (en) * | 2005-11-22 | 2007-06-06 | 罗伯特·博世有限公司 | Power miter saw with hinge linkage linear guides |
| CN201217101Y (en) * | 2007-07-24 | 2009-04-08 | 苏州宝时得电动工具有限公司 | Electric miter saw |
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- 2007-07-21 CN CN200710024202XA patent/CN101347847B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257570A (en) * | 1990-07-16 | 1993-11-02 | Ryobi Limited | Circular saw unit |
| US5564323A (en) * | 1994-03-07 | 1996-10-15 | Makita Corporation | Circular saw unit |
| CN1974092A (en) * | 2005-11-22 | 2007-06-06 | 罗伯特·博世有限公司 | Power miter saw with hinge linkage linear guides |
| CN201217101Y (en) * | 2007-07-24 | 2009-04-08 | 苏州宝时得电动工具有限公司 | Electric miter saw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154159A (en) * | 2019-04-22 | 2019-08-23 | 贾慧静 | Diagonal cutting saw with speed-regulating function |
| CN110154159B (en) * | 2019-04-22 | 2021-06-01 | 永康市开源动力工具有限公司 | Oblique saw with speed regulating function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101347847A (en) | 2009-01-21 |
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