CN201291329Y - Reciprocation cutting tool - Google Patents
Reciprocation cutting tool Download PDFInfo
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- CN201291329Y CN201291329Y CNU2008200413998U CN200820041399U CN201291329Y CN 201291329 Y CN201291329 Y CN 201291329Y CN U2008200413998 U CNU2008200413998 U CN U2008200413998U CN 200820041399 U CN200820041399 U CN 200820041399U CN 201291329 Y CN201291329 Y CN 201291329Y
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- cutter lifting
- guide wheel
- saw blade
- cam
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Abstract
The utility model relates to a reciprocal cutting tool. The cutting tool comprises a shell, a motor arranged in the shell, a reciprocal rod driven by the motor, a saw blade connected with the reciprocal rod, a rotating handle used for driving the reciprocal rod to rotate, an operating element arranged on the shell, a movable rotational locking piece operated by the operational element, a guide-wheel bracket arranged on the shell, a guide wheel arranged on the bracket and a guide-wheel position-limit mechanism; wherein the guide wheel can optionally be contacted and separated from the saw blade; the guide-wheel position-limit mechanism comprises at least one support position used for supporting the guide wheel to be contacted with the saw blade and a release position used for releasing the guide wheel to be separated from the saw blade; in addition, the guide-wheel position-limit mechanism can be operated to move by operating element between the support position and the release position.
Description
Technical field
The utility model relates to a kind of reciprocal cutting tool.Particularly relate to a kind of reciprocal cutting tool with model selection mechanism.
Background technology
As a kind of power tool, reciprocal cutting tool is used widely, and those skilled in the art are very familiar, and it comprises housing, is installed in the motor in the housing, and is driven by motor, with respect to the saw blade of housing reciprocating motion with cut workpiece.Sweep-saw, reciprocating saw etc. all belong to reciprocal cutting tool.
Many sweep-saws have the function of cutter lifting, owing to be subjected to a cutter lifting power of ordering about its swing, jigsaw blade can be slightly swing on reciprocal direction of cutting perpendicular to it.Because given saw blade a power of pointing to workpiece, the cutter lifting function can promote cutting efficiency significantly.The part sweep-saw also has the saw blade spinfunction simultaneously, and this function allows saw blade to rotate with respect to housing.Under the situation of the limited in rotation of or sweep-saw narrow at working space itself, the benefit of this function is tangible.
Usually, the sweep-saw that has these two kinds of patterns simultaneously need limit these two kinds of patterns and open simultaneously, because at saw blade be not along sweep-saw housing longitudinal axis forward the time under the rotary mode, the direction of cutter lifting active force is just different with the saw blade cut direction, this can cause sweep-saw to be difficult to operation, even can cause the saw blade fracture.
Because saw blade can be subjected to bigger cutting force in cutting.Usually need a guide wheel to support saw blade, simultaneously, cutter lifting power also can be passed to saw blade by guide wheel.Guide wheel all is to be fixed on the housing or base plate of sweep-saw in the prior art.Have the rotatable sweep-saw of guide wheel and saw blade at present and all have at least two gears, at a gear, guide wheel supports saw blade, but saw blade can not be rotated by the guide wheel restriction; Need remove guide wheel at another gear, saw blade just can rotate, and the patent No. is that the Chinese utility model patent of CN2717591Y has disclosed this technology.
Yet when sweep-saw had the cutter lifting pattern simultaneously, this scheme can be made troubles.Usually, a model selection mechanism is arranged in order to switch the cutter lifting pattern and the rotary mode of sweep-saw.Guide wheel is to support saw blade when the cutter lifting pattern, and when switching to rotary mode, guide wheel still supports saw blade, needs once more guide wheel to be pulled away from saw blade, when switching to the cutter lifting pattern from rotary mode, needs again guide wheel is reset to the position of supporting saw blade.Process is loaded down with trivial details and cause maloperation easily.
And, guide wheel is pulled away from saw blade can faces such problem, promptly the lifter of sweep-saw can limit the scope of activities of the wheel bracket that guide wheel is installed.
Therefore, need a kind of sweep-saw, pattern conversion regime with optimization, can be in the rotary mode and cutter lifting pattern that switch sweep-saw, the control guide wheel leaves or supports saw blade accordingly, to simplify the pattern transfer process and to avoid maloperation, such pattern conversion regime also must overcome the problem of the lifter of sweep-saw to the restriction of wheel bracket scope of activities.
The utility model content
The purpose of this utility model is to provide a kind of conversion that can be rotated pattern easily and support the cutter lifting pattern, and has the reciprocal cutting tool of saw blade support function that match with mode conversion function, safety and stability, especially a kind of sweep-saw.
The utility model provides a kind of reciprocating cutting tool that rotation/cutter lifting supports translation function that has, and it comprises:
Housing; Be located at the motor in the housing; Drive with respect to housing along the reciprocating reciprocating lever of axis X by motor; The saw blade that links to each other with reciprocating lever; Be located on the housing executive component that between rotary mode and support cutter lifting pattern, switches; Be located at wheel bracket on the housing and rack-mount guide wheel, described guide wheel and the selectable contact of saw blade with separate; Also comprise at least one guide wheel position-limit mechanism, described guide wheel position-limit mechanism has at least one and supports described guide wheel, the Support Position that guide wheel is contacted with saw blade discharges described guide wheel with at least one, the off-position that guide wheel is separated with saw blade, executive component is exercisable to move described guide wheel position-limit mechanism between described Support Position and off-position.
Further, described reciprocal cutting tool also comprises and linking to each other with reciprocating lever and rotary handle that exercisable drive reciprocating lever rotates around axis X; Move by executive component is exercisable, from fixed position that the restriction reciprocating lever rotates to the spin locking spare of the position of rotation that allows reciprocating lever to rotate; When position of rotation moved to the fixed position, described executive component moved described guide wheel position-limit mechanism to the Support Position to described executive component with described spin locking spare; When the fixed position moved to position of rotation, described executive component moved described guide wheel position-limit mechanism to the off-position to described executive component with described spin locking spare.
Further, described wheel bracket is pivotable to be installed on the housing, have the cantilever tip of a pivotal axis and the described guide wheel position-limit mechanism of adjacency that lays respectively at the pivotal axis both sides and the support bottom of the described saw blade of adjacency, described support bottom connects a guide wheel, but the described saw blade of described guide wheel butt, be provided with a support torsion spring between described wheel bracket and the housing, described support torsion spring compressing wheel bracket pivots, make cantilever tip near described guide wheel position-limit mechanism, support bottom and guide wheel are away from described saw blade.
Further, comprise cutter lifting component, described cutter lifting component comprises by the motor driving along reciprocating connecting plate of axis X and the cutter lifting plate that is movably connected on the described connecting plate.Described guide wheel position-limit mechanism comprises the cutter lifting plate, the described connecting plate of the pivotable connection of described cutter lifting plate, but the cutter lifting end that comprises a described cantilever tip of butt, and be provided with a cutter lifting plate torsion spring between described cutter lifting plate and the described connecting plate, described cutter lifting plate torsion spring is oppressed described cutter lifting end and is positioned at described connecting plate and is in Support Position on the same axis, in described Support Position, cutter lifting end support wheel bracket makes guide wheel contact saw blade; The cutter lifting end also has off-position less than the angles of 180 degree of formation between cutter lifting end and the connecting plate, and in described off-position, the support torsion spring is oppressed described wheel bracket towards the terminal pivot of cutter lifting, and guide wheel separates with saw blade.Described cutter lifting plate also comprises a cutter lifting plate side perpendicular to described cutter lifting end, and described executive component is connected with a driving lever, and the described driving lever of the exercisable drive of executive component is stirred cutter lifting plate side, and the cutter lifting plate is moved to the off-position from the Support Position.
Further, described guide wheel position-limit mechanism comprises the cam that connects described executive component, described cam has pivot axle center and the high plane and the low plane that are positioned on the cam periphery, described high plane arrives the distance in cam pivots axle center greater than described low plane to the distance in cam pivots axle center, described executive component drives described cam and pivots around its pivot axle center, optionally make high plane and low plane towards described cantilever tip, described high plane is during towards described cantilever tip, the high plane compressing guide wheel of cam contacts described saw blade, and described cam is positioned at the Support Position; Described low plane is during towards described cantilever tip, and the support torsion spring is oppressed described wheel bracket top and pivoted towards described low plane, and guide wheel leaves saw blade, and described cam is positioned at the off-position.
Further, when described cutter lifting plate is positioned at the Support Position, described cutter lifting end is driven by described connecting plate and moves back and forth between an extreme higher position on the axis X and an extreme lower position, described cam has three high planes that increase progressively successively apart from pivot axle center distance, described three high planes are during towards wheel bracket, on the axis X line direction between the extreme higher position and extreme lower position at the cutter lifting end.
Further, described executive component moves to separately Support Position or off-position simultaneously with described cam and cutter lifting plate.
Further, described executive component connects a cam, and cam is connected with the gear that can pivot with respect to housing by connecting rod, is provided with the tooth bar that is provided with the matched reciprocal direction of principal axis in edge of gear in the housing; Executive component passes through the cam of connection, connecting rod, and the reciprocal direction of principal axis of driven gear pivot and drive tooth bar edge moves the bite on the described rotary handle of interlock, and the shape of the end of described tooth bar and the shape of described bite match.The cut surface that described rotary handle rotates to saw blade is during over against the position of housing longitudinal axis Y, and described bite and described tooth bar are positioned on the same axis.
The utility model makes guide wheel support saw blade accordingly or separates with saw blade when switch supporting cutter lifting pattern and rotary mode, and is simple and quick, avoided maloperation, eliminated potential safety hazard.
Description of drawings
Fig. 1 is the cutaway view of sweep-saw master apparent direction of the present utility model.
Fig. 2 is the front view of sweep-saw of the present utility model.
Fig. 3 is a cutter lifting of the present utility model, the structural representation of rotation and guide wheel position-limit mechanism.
Fig. 4 is the schematic perspective view of rotating mechanism of the present utility model.
Fig. 5 is the schematic perspective view of cutter lifting component of the present utility model.
Fig. 6 is the schematic perspective view of cam of the present utility model.
Fig. 7 is the schematic perspective view of wheel bracket of the present utility model.
Fig. 8 a is the status architecture schematic diagram of 0 grade of cutter lifting of the present utility model.
Fig. 8 b is the status architecture schematic diagram of 1 grade of cutter lifting of the present utility model.
Fig. 8 c is the status architecture schematic diagram of 2 grades of cutter liftinves of the present utility model.
Fig. 8 d is the status architecture schematic diagram of cutter lifting III shelves of the present utility model.
Fig. 8 e is the status architecture schematic diagram of rotation S shelves of the present utility model.
Wherein,
1 sweep-saw, 2 housings, 4 motors
6 handles, 8 switches, 12 reciprocating levers
13 rectangular ends, 14 saw blades, 104 main shafts
106 gear wheels, 108 driving shafts, 110 chutes
202 rotary handles, 203 through holes, 204 sleeve pipes
205 cross bore, 206 bearing bracket stands, 208 ball bearings
210 bearing projections, 221 dark rectangular opening 222 shallow rectangular openings
302 cutter lifting driving shafts, 303 cutter lifting component, 304 connecting plates
306 cutter lifting grooves, 308 cutter lifting plates, 309 cutter lifting plate torsion springs
315 cantilever tip, 316 guide wheels, 317 pivotal axis
318 support torsion springs, 320 support bottoms, 402 executive components
404 cams, 406 high plane 407 arc surfaces
408 high plane 409 low plane 410 high planes
411 cam discs, 412 high planes, 413 chassis
414 cam handle, 416 connecting rods, 418 gears
420 gear handles, 422 tooth bar 422a toothed region
424 bayonet sockets, 426 sleeve pipe projections, 428 pins
The specific embodiment
The preferred embodiment of reciprocal cutting tool of the present utility model is a kind of sweep-saw.As shown in Figure 1, the left side of the sweep-saw 1 of present embodiment is defined as the rear of sweep-saw 1, and the right side is defined as the place ahead, and upside is defined as the top, and downside is defined as the below.Sweep-saw 1 has axis of reciprocation X that extends along the vertical direction and the housing longitudinal axis Y that extends along fore-and-aft direction, and axis X is vertical mutually with axis Y.
As Fig. 1, sweep-saw 1 comprises a housing 2, is set with a power source in housing 2, be preferably motor 4 in the present embodiment, motor 4 connects and rotation drive shaft 104, and an end of main shaft 104 connects motor 4, other end formative gear, the outer peripheral face engagement of this gear and gear wheel 106 connects.Described gear wheel 106 is driven by main shaft 104, around self said pivot.Off-centre is provided with a driving shaft 108 on the front end face of gear wheel 106, and this driving shaft 108 is deep in the chute 110.Chute 110 is fixedly connected on the reciprocating lever 12, and extends perpendicular to the direction of axis X and axis Y along the while.Reciprocating lever 12 is removable on axis X and axis Y direction, fixes on the direction perpendicular to axis X and axis Y.Like this, rotatablely moving of motor 4 is converted into chute 110 and reciprocating lever 12 along the reciprocating motion on the axis X direction by main shaft 104, gear wheel 106, driving shaft 108.Reciprocating lever 12 and then drive are provided with thereunder terminal saw blade 14 and carry out reciprocal cutting action.Saw blade 14 has the cut surface and the back side that is positioned at the rear that are positioned at the place ahead.Off-centre is provided with cutter lifting driving shaft 302 on the rear end face of gear wheel 106, and the eccentric direction of cutter lifting driving shaft 302 is opposite with the eccentric direction of driving shaft 108.Cutter lifting driving shaft 302 connects connecting plates 304 and drives it and moves back and forth along X-direction.Housing 2 tops form a handle 6, and handle 6 is provided with the switch 8 of control motor 4.Last the place ahead of the housing 2 of sweep-saw 1 is provided with rotary handle 202, and rotary handle 202 can pivot around axis X with respect to housing, and rotary handle 202 connects reciprocating levers 12, and its rotation drives reciprocating lever 12 and saw blade 14 and rotates around axis X.
As Fig. 2, pivotablely on the housing 2 of sweep-saw 1 be connected with an executive component 402, executive component 402 can effectively be controlled sweep-saw 1 and be positioned at 5 gears, and rotation conversion between five gears, these five gears are five kinds of duties of corresponding sweep-saw 1 respectively, they are successively: 0 grade of the cutter lifting shown in Fig. 8 a (illustrated 0 position), and this moment, sweep-saw 1 cannot rotate, also cannot cutter lifting; Cutter lifting I shelves shown in Fig. 8 b (illustrated I position), this moment, sweep-saw 1 cannot rotate cutter lifting amount minimum; Cutter lifting II shelves shown in Fig. 8 c (illustrated II position), this moment, sweep-saw 1 cannot rotate, and cutter lifting amount size is placed in the middle; Cutter lifting III shelves shown in Fig. 8 d (illustrated III position), this moment, sweep-saw 1 cannot rotate cutter lifting amount maximum; Rotation S shelves shown in Fig. 8 e (illustrated S position), this moment, sweep-saw 1 can rotate, cannot cutter lifting.Wherein, executive component switches to 0 grade of cutter lifting, cutter lifting I shelves, and sweep-saw 1 all is in a kind of cutter lifting support modes again when cutter lifting II shelves, cutter lifting III shelves, switches to rotation S shelves sweep-saw 1 and is in rotary mode.Its implementation and action effect be specifically narration below.
As Fig. 3, Fig. 4, sleeve pipe 204 is extended in the below of rotary handle 202, and the bottom of sleeve pipe 204 is provided with by a dark rectangular opening 221 and the cross bore 205 along the setting of axis X direction that shallow rectangular opening 222 overlaps and forms.The below of sleeve pipe 204 is provided with the bearing bracket stand of being located on the housing 2 206 (with reference to Fig. 1), and a ball bearing 208 is installed on the bearing bracket stand 206, and ball bearing 208 is suitable for rotating to all directions on bearing bracket stand 206.Ball bearing 208 has the through hole 203 of a rectangle, and the both sides of through hole 203 extend upward the rectangle projection 210 that forms two symmetries, and the upper end of reciprocating lever 12 is provided with rectangular end 13, and this rectangular end 13 is arranged in the through hole 203 of ball bearing 208.Dark rectangular opening 221 parts of aforesaid cross bore 205 are held the rectangular end 13 of reciprocating lever 12 tops, and shallow rectangular opening 222 parts of cross bore 205 are held two bearing projections 210 of the top of ball bearing 208.Dark rectangular opening 221 has enough length and moves back and forth along axis X with the rectangular end 13 that holds the reciprocating lever 12 that is located in the ball bearing 208 and top thereof, but does not allow it to rotate around axis X with respect to ball bearing 208.And dark rectangular opening 221 partial widths are slightly larger than the rectangular end 13 of reciprocating lever 12, to allow reciprocating lever 12 and ball bearing 208 along slightly swinging on perpendicular to the direction of axis X, allow saw blade 14 to carry out the cutter lifting action.
When rotary handle 202 pivots, the cross bore 205 of sleeve pipe 204 and sleeve bottom is driven to pivot, be arranged in the cross bore 205 ball bearing 208 and on bearing projection 210 and reciprocating lever 12 and rectangular end thereof 13 driven simultaneously and rotated around axis X, and then, ball bearing 208 and reciprocating lever 12 and on saw blade 14 also thereupon the rotation.
When executive component 402 rotations switch to 0 grade of cutter lifting, cutter lifting I shelves are when cutter lifting II shelves, arbitrary gear in the cutter lifting III shelves, sweep-saw 1 is positioned at the cutter lifting pattern that supports, and can be subjected to the cutter lifting active force on the direction reciprocal perpendicular to saw blade 12 at reciprocating lever 12 under this pattern and saw blade 14.As previously described, sleeve pipe 204 and ball bearing 208 allow this cutter lifting action.
As Fig. 3, shown in Figure 5, be provided with cutter lifting component 303 in the housing 2, cutter lifting component 303 comprises connecting plate 304 and the cutter lifting plate 308 that is provided with along the axis X direction, cutter lifting plate 308 is pivotally connected by a bearing pin and connecting plate 304, connecting plate 304 has a upper end and a lower end, its upper end is provided with a cutter lifting groove 306 perpendicular to the axis X direction, guide wheel position-limit mechanism of the pivotable connection in lower end, the guide wheel position-limit mechanism is for playing the cutter lifting plate 308 of cutter lifting effect simultaneously in the present embodiment, cutter lifting plate 308 has the terminal 310 and cutter lifting plate sides 312 perpendicular to described cutter lifting end 310 of a cutter lifting, cutter lifting plate 308 is provided with a cutter lifting plate torsion spring 309, and described cutter lifting plate torsion spring 309 compressings described cutter lifting terminal 310 and connecting plate 304 remain on the same axis.
As Fig. 3, shown in Figure 5, the rear end face of gear wheel 106 is provided with the cutter lifting driving shaft 302 of an off-centre, and cutter lifting driving shaft 302 is located in the cutter lifting groove 306 of connecting plate 304, can drive this connecting plate 304 and cutter lifting plate 308 and move back and forth along axis X.
As Fig. 3, shown in Figure 7, the wheel bracket 314 that the lower end of cutter lifting plate 308 is provided with.Wheel bracket 314 pivotablely is arranged on that pivotal axis 317 is connected with housing 2 on the housing 2 by one, and wheel bracket 314 also comprises cantilever tip 315 and the support bottom 320 that lays respectively at pivotal axis 317 both sides.Cantilever tip 315 has a plane, and guide wheel 316 is installed on the support bottom 320, and guide wheel 316 roughly is positioned at the rear of saw blade 14.Wheel bracket 314 is provided with a support torsion spring 318, and these support torsion spring 318 compressing cantilever tip 315 are near the cutter lifting end 310 of cutter lifting plate 308, and support bottom 320 and guide wheel 318 are away from saw blade 14.
As shown in Figure 3, when cutter lifting driving shaft 302 (referring to Fig. 1) orders about connecting plate 304 and moves downward, saw blade 14 driven shafts 108 drive by reciprocating lever 12 and upwards carry out cutting action, and connecting plate 304 drives cutter lifting plate 308 and cutter lifting end 310 moves downward, the terminal 310 butt cantilever tip 315 of cutter lifting, and promotion wheel bracket 314 overcomes the active force of support torsion spring 318 around pivotal axis 317 rotations, cantilever tip 315 is directed downwards along axis X moves, support bottom 320 and guide wheel 316 travel forward on Y direction, promote saw blade 14 and reciprocating lever 12 with ball bearing 208 be the pivot axle center on Y direction forward, saw blade 14 obtains one and helps the cutter lifting power of cutting, and this moment, sweep-saw 1 was in the cutter lifting support modes.When cutter lifting driving shaft 302 drive connecting plates 304 moved on X axis, wheel bracket 314 recovered initial position under 318 compressings of support torsion spring.
Finish a cutting and homing action when reciprocating lever 12 and saw blade 14, wheel bracket 314 and guide wheel 316 are also finished a cutter lifting and homing action.In above-mentioned cutter lifting and homing action, the cutter lifting end 310 of cutter lifting plate 308 has an extreme higher position and the extreme lower position on the axis X.
The conversion of sweep-saw 1 between above-mentioned rotary mode and cutter lifting support modes below is described in detail in detail.
As Fig. 3, Fig. 6, executive component 402 is positioned on the side of housing 2 inside another guide wheel position-limit mechanism is installed, be cam 404 in the present embodiment, cam 404 is positioned at the top of the cantilever tip 315 of wheel bracket 314, be suitable for being operated element 402 and drive, rotate around the pivot axle center of cam 404.Cam 404 has the chassis 413 of attended operation element 402,413 extended cam handle 414 and the cam disc 411 that is connected chassis 413 from the chassis.Chassis 413 is roughly rounded, and the outside of cam disc 411 is by being circular-arc high plane 412 and being the high plane 410 on plane, high plane 408, and high plane 406 is connected in sequence, and they successively decrease successively to the distance in the pivot axle center of cam 404.The inboard of cam disc 411 is an arc surface 407, and the lateral surface of cam disc 411 and medial surface couple together by two symmetrically arranged low planes 409.Described two low planes 409 are positioned on the plane of passing cam 404 pivot axle center.
As previously mentioned, the support torsion spring 318 on the wheel bracket 314 is oppressed wheel bracket 314 all the time and is pivoted around self pivotal point, makes guide wheel 316 on it away from saw blade 14, and the cantilever tip 315 of wheel bracket 314 is pressed close to cam 404.The cutter lifting end 310 of cutter lifting plate 308 has an extreme higher position and an extreme lower position on the axis X direction, when executive component 402 switches to 0 grade of cutter lifting respectively, cutter lifting I shelves, cutter lifting II shelves, during cutter lifting III shelves, executive component drives cam 404 and pivots, and respectively high plane 412, high plane 410, high plane 408, high plane 406 is faced cantilever tip 315 separately.When described each high plane was faced cantilever tip 315 respectively, high plane 412 was positioned at the extreme lower position below of cutter lifting end 310; High plane 410, high plane 408 and high plane 406 are all between the extreme higher position and extreme lower position of cutter lifting end 310.Like this, when high plane 412 was faced cantilever tip 315, cantilever tip 315 was limited in the minimum point of high plane 412 on the axis X direction, and is positioned under the extreme lower position of cutter lifting plate 308, and promptly cutter lifting end 310 can not contact cantilever tip 315.When cam 404 pivots, high plane 410, high plane 408 is when high plane 406 is faced cantilever tip 315, because the pivotal point of their close cams 404 gradually, cantilever tip 315 rises gradually, and all is higher than the extreme lower position of cutter lifting plate 308, is lower than the extreme higher position of cutter lifting plate 308, like this, the cutter lifting of cutter lifting plate 308 affacts on the guide wheel 316, and the effect stroke increase successively, the cutter lifting amount increases successively.
When cantilever tip 315 rose gradually, guide wheel 316 also retreated to the direction away from saw blade 14 gradually.But when sweep-saw 1 was operated in the cutter lifting support modes, saw blade 14 was subjected to the workpiece reaction force, and saw blade 14 and reciprocating lever 12 are that pivotal point pivots with ball bearing 308, follow guide wheel 316 all the time.
When sweep-saw 1 was in above-mentioned cutter lifting support modes, the spinfunction of sweep-saw 1 was forbidden, and is specific as follows described.
As Fig. 3, one end of cam handle 414 connects cam 404, one end of a connecting rod 416 of the pivotable connection of the other end, pivotable gear handle 420 that is arranged on the sector gear 418 on the housing 2 of the pivotable connection of the other end of connecting rod 416, like this, when executive component 402 rotations, can pass through cam 404, fan-shaped gear 418 pivots of connecting rod 416 drives.The sector gear 418 other spin locking spares that cooperate with it that are provided with are tooth bar 422 in the present embodiment.This tooth bar 422 is positioned on the housing 2, is suitable for moving around along the axis X direction.The top of tooth bar 422 is provided with the bayonet socket 424 of a U-shaped, and end is provided with a toothed region 422a.
Simultaneously, the bite that is provided with this U-shaped bayonet socket 424 of cooperation of sleeve pipe 204 outside correspondences of rotary handle 202 is sleeve pipe projection 426 in the present embodiment.The position of sleeve pipe projection 426 is through design, makes that U-shaped bayonet socket 424 just can block sleeve pipe projection 426 when having only cut surface when saw blade 14 over against axis Y the place ahead.
When executive component 402 drive cams, 404 pivots and 0 grade of cutter lifting, cutter lifting I shelves, cutter lifting II shelves, when switching between cutter lifting III shelves, sector gear 418 is driven simultaneously and is pivoted, but with the toothed region 422a interlock of tooth bar 422, the U-shaped card 424 of tooth bar 422 does not block sleeve pipe projection 426 always, makes reciprocating lever 12 not rotate.Only, executive component 402 pivots when driving cam 404, when cutter lifting III shelves switch to rotation S shelves, gear 418 interlock tooth bars 422 also drive tooth bar 422 and move downward along axis X, the U-shaped bayonet socket 424 of this hour rack 422 breaks away from sleeve pipe projection 426, sweep-saw 1 is transformed into rotary mode, and rotary handle 202 can drive reciprocating lever 12 and saw blade 14 pivots around axis X.Opposite, when executive component 402 by rotation S shelves when cutter lifting III shelves switch, gear 418 interlock tooth bars 422 also drive tooth bar 422 and move upward along axis X, the U-shaped bayonet socket 424 of tooth bar 422 blocks sleeve pipe projection 426, sweep-saw 1 is transformed into the cutter lifting support modes.
It is to be noted: because the position of sleeve pipe projection 426 is through particular design, when the cut surface direction deflection curve of saw blade 14 is sawed housing 2 the place aheads of 1, the U-shaped bayonet socket 424 of tooth bar 422 can't block sleeve pipe projection 426, and executive component 402 also can't be changed to cutter lifting III shelves by rotation S shelves.In the present embodiment, rotation preferably has arrow on the knob 402, helps the user to determine that saw blade 14 is whether over against housing 2 the place aheads of sweep-saw 1.
Under the cutter lifting support modes, aforesaid two guide wheel position-limit mechanisms: cutter lifting plate 308 and cam 404 all are in a kind of Support Position, the cantilever tip 315 of their compressing wheel brackets 314, make guide wheel be positioned at saw blade 14 and intersect the distance that pivots and to reach on the plane of determining in axis X and axis Y around ball bearing 208, and workpiece is given 14 1 reaction forces of saw blade during sweep-saw 1 work, guide wheel 14 and saw blade fitted tightly, like this, limited saw blade 14 around axis X rotation.When sweep-saw 1 is transformed into rotary mode by the cutter lifting support modes, aforesaid two guide wheel position-limit mechanisms: cutter lifting plate 308 and cam 404 all are in a kind of off-position, they move up on the axis X direction, no longer oppress cantilever tip 315 so that guide wheel is positioned at saw blade 14 and intersect the distance that pivots and can reach on the plane of determining around ball bearing 208 in axis X and axis Y.This moment, described cutter lifting function was under an embargo simultaneously, and guide wheel leaves saw blade 14, was positioned at saw blade 14 and intersected outside the distance that can reach that pivots on the plane of determining in axis X and axis Y around ball bearing 208, and is specific as follows described.
As Fig. 3, the tie point of connecting rod 416 and cam handle 414 also is provided with a driving lever, be pin 428 in the present embodiment, pin 428 executive component 402 by cutter lifting III shelves when rotation S shelves switch, cam 404 pivots, pin 428 is followed cam handle 414 and is moved up, the described cutter lifting plate of butt side 312 also overcomes the power of cutter lifting plate torsion spring 309, driving cutter lifting plate 308 pivots, cutter lifting end 310 is moved upward on the direction of axis X, leave the cantilever tip 315 of wheel bracket 314, with become between the connecting plate one less than 180 the degree angles.Like this, though the connecting plate 304 of cutter lifting component 303 is still driven by motor and moves back and forth on the direction of axis X, but cutter lifting end 310 no longer prop up cantilever tip 315 and oppress support bottom 320 and on guide wheel 316 applying saw blades 14, also no longer have extreme higher position and extreme lower position on the axis X direction, therefore the cutter lifting function is under an embargo.Simultaneously, cam 404 upset, low plane 409 is in the face of cantilever tip 315, no longer prop up cantilever tip 315 and oppress support bottom 320 and on guide wheel 316 applying saw blades 14.Like this, two above-mentioned guide wheel position-limit mechanisms all are moved and leave the position that it plays position-limiting action.After losing restriction, wheel bracket 314 significantly pivots under 318 effects of support torsion spring, support bottom 320 and guide wheel 316 move backward along axis Y direction, leave saw blade 14 and intersect the distance that pivots and can reach on the plane of determining around ball bearing 208 in axis X and axis Y, no longer contact with saw blade 14.Therefore saw blade 14 can not limited its pivot around axis X by guide wheel 316.
Opposite, when executive component 402 by rotation S shelves when cutter lifting III shelves switch, the power that executive component 402 drive cams 404 overcome support torsion spring 318 pivots wheel bracket 314, guide wheel 316 is near saw blade 14, pin 428 leaves cutter lifting plate side 312 simultaneously, and cutter lifting plate 308 is got back to the cutter lifting operating position under the effect of cutter lifting plate torsion spring 309.
Following integral body is narrated sweep-saw 10 grade of cutter lifting, cutter lifting I shelves, cutter lifting II shelves, the transfer process between cutter lifting III shelves and rotation S shelves.
As Fig. 8 a to Fig. 8 e, when executive component 402 was positioned at 0 grade of cutter lifting, high plane d412 was in the face of the cantilever tip 315 of wheel bracket 314, and cantilever tip 315 is positioned under the extreme lower position of cutter lifting plate 308; The U-shaped card 424 of tooth bar 422 blocks sleeve pipe projection 426, and gear 418 is pinion rack 422 not, and pin 428 does not contact cutter lifting plate side 312, and sweep-saw 1 is non-rotatable also can not cutter lifting.Executive component 402 switches to cutter lifting I shelves by 0 grade of cutter lifting, and high plane 410 is in the face of cantilever tip 315, and cantilever tip 315 is higher than the extreme lower position of cutter lifting plate 308, is lower than the extreme higher position of cutter lifting plate 308; The U-shaped bayonet socket 424 of tooth bar 422 blocks in the sleeve pipe projection 426, and gear 418 is pinion rack 422 not, and pin 428 does not contact cutter lifting plate side 312, and sweep-saw 1 is non-rotatable, and the cutter lifting amount is less.Executive component 402 switches to cutter lifting I I shelves by cutter lifting I shelves, and high plane 408 is in the face of cantilever tip 315, and cantilever tip 315 is higher than the extreme lower position of cutter lifting plate 308, is lower than the extreme higher position of cutter lifting plate 308; The U-shaped bayonet socket 424 of tooth bar 422 blocks sleeve pipe projection 426, and gear 418 is pinion rack 422 not, and pin 428 does not contact cutter lifting plate side 312, and sweep-saw 1 is non-rotatable, and the cutter lifting amount is placed in the middle.Executive component 402 switches to cutter lifting III shelves by cutter lifting II shelves, and high plane 406 is face-to-face to cantilever tip 315, and cantilever tip 315 is higher than the extreme lower position of cutter lifting plate 308, is lower than the extreme higher position of cutter lifting plate 308; The U-shaped bayonet socket 424 of tooth bar 422 blocks sleeve pipe projection 426, and gear 418 is pinion rack 422 not, and pin 428 does not contact cutter lifting plate side 312, and sweep-saw 1 is non-rotatable, cutter lifting amount maximum.Executive component 402 switches to rotation S shelves by cutter lifting III shelves, cam 404 upsets, low plane 409 is in the face of cantilever tip 315, pin 428 is by cutter lifting plate side 312 biasing cutter lifting plates 308, guide wheel 316 retreats and leaves saw blade 14, and gear 418 pinion racks 422 also drive tooth bar 418 and move down, and the U-shaped bayonet socket 424 of tooth bar 422 leaves sleeve pipe projection 426, sweep-saw 1 can rotate, can not cutter lifting.
Opposite, executive component 402 also can be adjusted to 0 grade of cutter lifting successively from rotation S shelves, and detailed process repeats no more.
The utility model still has multiple concrete embodiment.All employings are equal to replacement or equivalent transformation and all technical schemes of forming, all drop within the claimed scope of the utility model.
Claims (11)
1. reciprocal cutting tool comprises:
Housing (2);
Be located at the motor (4) in the housing (2);
Drive with respect to housing (2) along the reciprocating reciprocating lever of axis X (12) by motor (4);
The saw blade (14) that links to each other with reciprocating lever (12);
Be located on the housing (2), be used to control the executive component (402) that reciprocal cutting tool (1) switches between rotary mode and support cutter lifting pattern;
Support the guide wheel (316) of described saw blade (14), described guide wheel (316) and the selectable contact of saw blade (14) with separate;
It is characterized in that: also comprise at least one guide wheel position-limit mechanism, described guide wheel position-limit mechanism has at least one and supports described guide wheel (316), the Support Position that guide wheel (316) is contacted with saw blade (14) discharges described guide wheel (316) with at least one, the off-position that guide wheel (314) is separated with saw blade (14), executive component (402) is exercisable to move described guide wheel position-limit mechanism between described Support Position and off-position.
2. reciprocal cutting tool according to claim 1 is characterized in that: comprise being used to control the rotary handle (202) that reciprocating lever (12) rotates around axis X; Move by executive component (402) is exercisable, from fixed position that restriction reciprocating lever (12) rotates to the spin locking spare (422) of the position of rotation that allows reciprocating lever (12) rotation; When position of rotation moved to the fixed position, described executive component (402) moved described guide wheel position-limit mechanism to the Support Position to described executive component (402) with described spin locking spare (422); When the fixed position moved to position of rotation, described executive component (402) moved described guide wheel position-limit mechanism to the off-position to described executive component (402) with described spin locking spare (310,404).
3 reciprocal cutting tools according to claim 1, it is characterized in that: described guide wheel (316) is installed on the wheel bracket (314), described wheel bracket (314) is pivotable to be installed on the housing (2), have a pivotal axis (317) and lay respectively at pivotal axis (317) both sides the described guide wheel position-limit mechanism of adjacency cantilever tip (310) and in abutting connection with described saw blade (14) support bottom (320), described support bottom (320) connects described guide wheel (316), described guide wheel (316) but the described saw blade of butt (14), be provided with a support torsion spring (318) between described wheel bracket (314) and the housing (2), described support torsion spring (318) compressing wheel bracket (314) pivots, make cantilever tip (310) near described guide wheel position-limit mechanism, support bottom (320) and guide wheel (316) are away from described saw blade (14).
4. reciprocal cutting tool according to claim 3, it is characterized in that: comprise cutter lifting component (303), described cutter lifting component (303) comprises by motor (4) driving along reciprocating connecting plate of axis X (304) and pivotally connected cutter lifting plate (308) on described connecting plate (304).
5. reciprocal cutting tool according to claim 4, it is characterized in that: described guide wheel position-limit mechanism comprises cutter lifting plate (308), the described connecting plate of the pivotable connection of described cutter lifting plate (308) (304), but the cutter lifting end (310) that comprises a described cantilever tip of butt (315), and be provided with a cutter lifting plate torsion spring (318) between described cutter lifting plate (308) and the described connecting plate (304), the described cutter lifting end of described cutter lifting plate torsion spring (318) compressing (310) is positioned at described connecting plate (304) and is in Support Position on the same axis, in described Support Position, cutter lifting end (310) supports wheel bracket (314), makes guide wheel (316) contact saw blade (14); Cutter lifting end (310) also has off-position less than the angles of 180 degree of formation between cutter lifting end (310) and the connecting plate (304), in described off-position, support torsion spring (309) is oppressed described wheel bracket (314) and is pivoted towards cutter lifting end (310), and guide wheel (316) separates with saw blade (14).
6. reciprocal cutting tool according to claim 5, it is characterized in that: described cutter lifting plate (308) also comprises a cutter lifting plate side (312) perpendicular to described cutter lifting end (310), described executive component (402) is connected with driving lever (428), the described driving lever of the exercisable drive of executive component (402) (428) is stirred cutter lifting plate side (312), and cutter lifting plate (308) is moved to the off-position from the Support Position.
7. reciprocal cutting tool according to claim 5, it is characterized in that: described guide wheel position-limit mechanism comprises the cam (404) that connects described executive component (402), described cam (404) has pivot axle center and the high plane (406 that is positioned on cam (404) periphery, 408,410,412) and low plane (409), described high plane (406,408,410,412) distance that arrives cam (404) pivot axle center is greater than the distance of described low plane (409) to cam (404) pivot axle center, and described executive component (402) drives described cam (404) and pivots around its pivot axle center, optionally makes high plane (406,408,410,412) and low plane (409) towards described cantilever tip (315), described high plane (406,408, during 410,412) towards described cantilever tip (315), the high plane (406 of cam (404), 408,410,412) compressing guide wheel (316) contacts described saw blade (14), and described cam (404) is positioned at the Support Position; Described low plane (409) is during towards described cantilever tip (315), and support torsion spring (318) is oppressed described cantilever tip (315) and pivoted towards described low plane (409), and guide wheel (316) leaves saw blade (14), and described cam (404) is positioned at the off-position.
8. reciprocal cutting tool according to claim 7, it is characterized in that: described cutter lifting plate (308) is when being positioned at the Support Position, described cutter lifting end (310) is driven by described connecting plate (304) and moves back and forth between an extreme higher position on the axis X line (50) and an extreme lower position, described cam (404) has three high planes (406 that increase progressively successively apart from pivot axle center distance, 408,410), described three high planes (406,408,410, during 412) towards wheel bracket (314), between the extreme higher position and extreme lower position that are positioned at cutter lifting end (310) on the axis X direction.
9. reciprocal cutting tool according to claim 8 is characterized in that: described executive component (402) moves to separately Support Position or off-position simultaneously with described cam (404) and cutter lifting plate (308).
10. reciprocal cutting tool according to claim 2, it is characterized in that: described executive component (402) connects a cam (404), cam (404) is connected with the gear (418) that can pivot with respect to housing (2) by connecting rod (416), and described spin locking spare (422) is for being installed in tooth bar (422) in the housing (2), that be provided with the matched reciprocal direction of principal axis in edge of gear (418); The cam (404) of executive component (402) by connecting, connecting rod (416) driven gear (418) pivots and drives tooth bar (422) and moves the also bite (426) of the described rotary handle of interlock (202) along the axis X direction, and bite (426) shape of the shape of the end of described tooth bar (422) and described rotary handle (202) matches.
11. reciprocal cutting tool according to claim 10, it is characterized in that: the cut surface that described rotary handle (202) rotates to saw blade (14) is during over against the position of housing longitudinal axis Y, and described bite (426) and described tooth bar (422) are located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200413998U CN201291329Y (en) | 2008-08-15 | 2008-08-15 | Reciprocation cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200413998U CN201291329Y (en) | 2008-08-15 | 2008-08-15 | Reciprocation cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201291329Y true CN201291329Y (en) | 2009-08-19 |
Family
ID=41004783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200413998U Expired - Fee Related CN201291329Y (en) | 2008-08-15 | 2008-08-15 | Reciprocation cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201291329Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648297B (en) * | 2008-08-14 | 2011-09-07 | 苏州宝时得电动工具有限公司 | Reciprocal cutting tool |
| CN103894672A (en) * | 2014-03-28 | 2014-07-02 | 潘杭 | Grooving machine for vertical rectangular grooves of plates |
-
2008
- 2008-08-15 CN CNU2008200413998U patent/CN201291329Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648297B (en) * | 2008-08-14 | 2011-09-07 | 苏州宝时得电动工具有限公司 | Reciprocal cutting tool |
| CN103894672A (en) * | 2014-03-28 | 2014-07-02 | 潘杭 | Grooving machine for vertical rectangular grooves of plates |
| CN103894672B (en) * | 2014-03-28 | 2017-01-11 | 潘杭 | Grooving machine for vertical rectangular grooves of plates |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20120815 |