CN103203777B - Portable circular saw - Google Patents
Portable circular saw Download PDFInfo
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- CN103203777B CN103203777B CN201210009006.6A CN201210009006A CN103203777B CN 103203777 B CN103203777 B CN 103203777B CN 201210009006 A CN201210009006 A CN 201210009006A CN 103203777 B CN103203777 B CN 103203777B
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Abstract
The invention provides a kind of portable circular saw, for cutting the workpiece of predetermined thickness, the workpiece of described predetermined thickness has towards the first surface of described portable circular saw and the second surface back to described portable circular saw, described portable circular saw comprises: for cutting the saw blade of described workpiece, described saw blade has circular cutting edge, when described saw blade cuts described workpiece, described cut edge and described second surface have the first intersection point and the second intersection point; Housing; Be housed in described housing, and drive the motor of described saw blade; Be resisted against the base plate of described first surface; Described base plate is provided with cue mark, and described cue mark can indicate when described portable circular saw is in maximum cutting-in and cuts described workpiece, at least one position in described first intersection point and described second intersection point.Making user can clearly know that saw blade cuts the position of wearing workpiece by observing cue mark, improve cutting accuracy, and bringing facility to user.
Description
Technical field
The present invention relates to a kind of portable circular saw.
Background technology
Existing small portable annular saw, comprise a less saw blade, for driving the motor of saw blade, casing, casing front portion is used for accommodating transmission mechanism etc., cabinet rear is used for accommodating motor etc., this little portable electric annular saw does not arrange independent handle, namely the rear portion of casing can be used as handle and uses, this electric circular saw does not have independent to determine guard shield, saw blade top is contained in wherein by casing front portion, what this casing front portion was just equivalent to traditional electrical annular saw determines guard shield, an independent dynamic guard shield is movably installed on casing front portion, be provided with opening bottom guard shield to be provided for saw blade and therefrom to stretch out, and it is anterior relative to casing removable thus make the saw blade degree of depth exposed different.This portable circular saw structure is relatively simple, is relatively applicable to the thinner workpiece of cutting.
In routine duties, user often needs to take off sub-fraction on a monoblock workpiece and processes further, first can make a mark on workpiece, to indicate the position of cutting, then use described portable circular saw according to described mark cut workpiece.In cutting process, user, by observing the relative position between saw blade and workpiece, has judged whether cutting.Because saw blade is rounded, the front end of its cutting is arc-shaped sections, when user observe saw blade cut to done mark time, in fact due to the existence of arc-shaped sections, workpiece does not cut off in described mark, make user have to utilize other instruments again to process for arc-shaped sections, make cutting work become loaded down with trivial details.
Summary of the invention
In view of this, be necessary to provide a kind of portable circular saw being convenient to cut workpiece.
The invention provides a kind of portable circular saw, for cutting the workpiece of predetermined thickness, the workpiece of described predetermined thickness has towards the first surface of described portable circular saw and the second surface back to described portable circular saw, described portable circular saw comprises: for cutting the saw blade of described workpiece, described saw blade has circular cutting edge, when described saw blade cuts described workpiece, described cut edge and described second surface have the first intersection point and the second intersection point; Housing; Be housed in described housing, and drive the motor of described saw blade; Be resisted against the base plate of described first surface; Described base plate is provided with cue mark, and described cue mark can indicate when described portable circular saw is in maximum cutting-in and cuts described workpiece, at least one position in described first intersection point and described second intersection point.
Preferably, the quantity of described cue mark is at least two, and described at least two cue marks when described saw blade cuts described workpiece, can indicate the position of described first intersection point and described second intersection point.
Preferably, on described base plate, corresponding described cue mark is provided with scale, and described scale is the thickness of described workpiece.
The present invention also provides a kind of portable circular saw, for cutting the workpiece of predetermined thickness, the workpiece of described predetermined thickness has towards the first surface of described portable circular saw and the second surface back to described portable circular saw, described portable circular saw comprises: for cutting the saw blade of described workpiece, cuts described workpiece along the cut direction parallel with described second surface; Housing; Partial receipt in described housing, and drives the motor of described saw blade; Be resisted against the base plate of described first surface; Described base plate is provided with cue mark, and described cue mark can, when described saw blade cuts described workpiece, indicate described saw blade to stretch out described second surface foremost along described cut direction.
Preferably, the quantity of described cue mark is at least two, and described at least two cue marks can when described saw blade cuts described workpiece, indicate described saw blade along described cut direction stretch out described second surface foremost and rearmost end.
Preferably, on described base plate, corresponding described cue mark is provided with scale, and described scale is the thickness of described workpiece.
Preferably, described portable circular saw has cutting-in governor motion, and described cue mark is used for when described cutting-in governor motion is in a predetermined cutting-in, indicates described saw blade to stretch out described second surface foremost along described cutting machine direction.
The present invention by arrange cue mark instruction saw blade cut wear workpiece after expose the foremost position of surface of the work, so cut mark is set on workpiece, after described cue mark is aimed at described cut mark, just can realize just the position that described cut mark identifies being cut wearing, making user without the need to again operating, bringing facility to user.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, further detailed description is done to the present invention.
The schematic perspective view of the portable circular saw that Fig. 1 provides for first embodiment of the invention;
Fig. 2 is the partial schematic diagram of portable circular saw in Fig. 1, and wherein guard shield is in primary importance;
Fig. 3 is the decomposing schematic representation of adjusting part in Fig. 1;
Fig. 4 is the partial schematic diagram of portable circular saw in Fig. 1, and wherein guard shield is in the workpiece that second place cutting thickness is 1 cun;
Fig. 5 is the guard shield of portable circular saw in Fig. 1 and the schematic perspective view of the second cutting-in governor motion;
Fig. 6 is the partial schematic diagram of portable circular saw in Fig. 1, and wherein saw blade is just cut and worn workpiece;
Fig. 7 is the partial schematic diagram of portable circular saw in Fig. 1, and wherein guard shield is in the workpiece that second place cutting thickness is 1/2 cun;
Fig. 8 is the schematic diagram of the saw blade of portable circular saw in Fig. 1;
Fig. 9 is the top view of guard shield and the second cutting-in governor motion in Fig. 5;
The guard shield of the portable circular saw that Figure 10 provides for second embodiment of the invention and the solid signal of the second cutting-in governor motion;
Figure 11 is the decomposed schematic diagram of guard shield and the second cutting-in governor motion in Figure 10.
Wherein:
10. portable circular saw 48. is slotted 76. springs
12. housing 50. adjusting part 78. reference marks
14. saw blade 52. installing plate 80. first cue marks
15. sawtooth 54. spanner 82. second cue marks
16. guard shield 56. connector 84. cut edge lines
17. saw blade plane 58. pointer 86. first intersection points
18. switch module 60. base plate 88. second intersection points
20. tool drives axle 62. guide rail 90. second cutting-ins regulate and beat a drum
22. head capsule 64. host cavity 92. gears
24. connecting portion 66. abutment face 94. tooth bars
26. motor shell 68. saw blade through hole 96. locking members
28. generating laser 69. lug boss 98. first flank of tooth
44. head capsule sidewall 70. second cutting-in governor motion 100. locking faces
45. locating part 72. screwed hole 102. second flank of tooth
46. first cutting-in governor motion 73. workpiece 104. confined planes
47. workpiece 73a. first surface 106. inclined-planes
47a. first surface 73b. second surface 108. gear resettlement section
47b. second surface 74. screw
Specific embodiment
Refer to Fig. 1, first embodiment of the invention provides a kind of portable circular saw 10 to comprise housing 12, be housed in the motor (not shown) in housing 12, be positioned at housing 12 by the power transmission of motor to the transmission component (not shown) of saw blade 14, install on housing 12 and the guard shield 16 that can slide relative to housing 12, and be positioned at the switch module 18 housing 12 controlling motor and whether work.
The power supply of portable circular saw 10 is AC power, namely by AC power to motor power supplying, now portable circular saw 10 has stronger power, and does not limit by electricity, is applicable to work long hours.Certain portable circular saw 10 also can be designed to the structure of direct current supply, namely on portable circular saw 10, power brick is installed, by power brick to motor power supplying, now portable circular saw 10 portability is better, it can not be subject to the impact of power line, and user can carry portable circular saw 10 and carry out cutting work in any place.
Motor can be carbon brush motor, brushless motor etc., or corresponds to the energy source of portable circular saw 10, and motor can be alternating current motor or d.c. motor.Motor has motor output shaft (not shown), and the rotation of motor is exported by installing gear on motor output shaft.
Transmission component and motor output shaft connect, and the rotation that motor output shaft exports is passed to saw blade 14.Transmission component comprises the tool drives axle 20 for installing saw blade 14, and tool drives axle 20 has axis H-H.Saw blade 14 is installed on one end of tool drives axle 20, and the other end of tool drives axle 20 can be connected by the gear of direct geared and motor output shaft, realizes motor-driven tool driving shaft 20 and rotates.Certainly, between motor output shaft and tool drives axle 20, can also reduction gearing etc. be set, no longer describes in detail as space is limited at this.Axis H-H with the axis perpendicular of motor output shaft or can be arranged in parallel, and in the present embodiment, axis H-H is mutually vertical with the axis of motor output shaft.
See also Fig. 1 and Fig. 4, saw blade 14 is saw blade, it has the sawtooth 15 of circumference setting and defines circular cut edge 19, and define two parallel saw blade planes 17 (only illustrating in figure), saw blade plane 17 is perpendicular with the axis H-H of tool drives axle 20, thus saw blade plane 17 is parallel to each other with the lengthwise bearing of trend of housing 12.The central area of saw blade plane 17 is provided with installing hole, for saw blade 14 is fixedly mounted on tool drives axle 20.
Refer to Fig. 1, housing 12 entirety extends along the first lengthwise bearing of trend vertical with axis H-H, and housing 12 comprises and is positioned at one end and resettlement section is divided the head capsule 22 of saw blade 14 and is positioned at the motor shell 26 of the other end.
Motor shell 26 for accommodating fixing motor, and is provided with air inlet (not shown) and air outlet (not shown) on motor shell 26.
The part be connected with head capsule 22 at motor shell 26 forms connecting portion 24.Connecting portion 24 partial receipt transmission component, and in order to the structure of Appropriate application connecting portion 24 more, connecting portion 24 is designed to the grip part of portable circular saw 10, namely user carries out cutting work by holding grip part operation portable circular saw 10, because holding area is between head capsule 22 and motor shell 26, namely grip part and head capsule 22 adjacent.User is equivalent to when holding grip part constitute fulcrum between head capsule 22 and motor shell 26, the part of fulcrum both sides mutually can restrict under respective gravity effect, realize after user holds grip part, portable circular saw 10 is in more stable state, be very easy to carry out cutting operation, improve the comfort level of operation, preferably, the center of gravity of portable circular saw 10 is positioned on grip part, and now portable circular saw 10 has best operational comfort.
Certainly; grip part is not limited to be formed in connecting portion 24, also can form grip part for motor shell 26, and those skilled in the art also may make other and change; as long as but its function and effect and the present invention same or similar, all should be covered by scope.
Head capsule 22 for installing guard shield 16, and can accommodate part transmission mechanism and saw blade 14 is divided in resettlement section.The tool drives axle 20 of transmission mechanism is contained in head capsule 22, and head capsule 22 has the opening for connecting with guard shield 16, and saw blade 14 part is goed deep in opening, and is mounted on tool drives axle 20.
Head capsule 22 is provided with generating laser 28.Generating laser 28 can send laser, formed one cutting index line, namely when user promote portable circular saw 10 carry out cutting work time, saw blade 14 can along cutting index line cut, setting like this improves the cutting accuracy of user, and brings facility to user.
Head capsule 22 has two head capsule sidewalls 44 vertical with the axis H-H of tool drives axle 20, namely the bearing of trend of two head shell side walls 44 and the saw blade plane 17 of saw blade 14 parallel, and two head shell side walls 44 lay respectively at the side of saw blade 14.The locating part 45 for coordinating with guard shield 16 is respectively arranged with back to the surface of saw blade 14 at each head capsule sidewall 44.After guard shield 16 is mounted to head capsule 22, it can coordinate with locating part 45 and realizes sliding within the specific limits relative to head capsule 22.In the present embodiment, locating part 45 is the bearing be installed on by screw on head capsule sidewall 44, and the quantity of each head capsule sidewall 44 upper limit part 45 is three, highly stable when guard shield 16 so can be made to slide relative to head capsule 22.
Refer to Fig. 4, portable circular saw 10 cuts the workpiece 47 of predetermined thickness.Workpiece 47 has the first surface 47a towards the portable circular saw 10 and second surface 47b back to portable circular saw 10, and when carrying out cutting work, portable circular saw 10 is resisted against on first surface 47a.
Refer to Fig. 2 and Fig. 3, in order to realize the cutting of depthkeeping degree, head capsule 22 is provided with the first cutting-in governor motion 46, it can realize the depth of cut regulating portable circular saw 10 fast, namely regulate guard shield 16 relative to the position of head capsule 22, be applicable to the coarse adjustment to cutting-in, can realize being adjusted to arbitrary predetermined cutting-in position.
First cutting-in governor motion 46 can be positioned at above any one head capsule sidewall 44, two head shell side walls 44 can certainly be provided with the first cutting-in governor motion 46 respectively.In the present embodiment, only a head shell side wall 44 arranges the first cutting-in governor motion 46 wherein.First cutting-in governor motion 46 is included in the fluting 48 on head capsule sidewall 44 and can slides in fluting 48 and the adjusting part 50 that can locate at an arbitrary position, and the cutting-in realizing regulating portable cutter 10 is a predetermined cutting-in.Be provided with the scale indicating cutting-in near the position of fluting 48 at head capsule sidewall 44.
Adjusting part 50 comprises the connector 56 being positioned at the inner installing plate 52 of head capsule 22, having the spanner 54 of cam surface, connect spanner 54 and installing plate 52, and to be arranged on installing plate 52 and to indicate the pointer 58 of current scale.Spanner 54 is exercisable is exerted pressure to head capsule sidewall 44 by cam surface, is clamped between cam surface and installing plate 52 by head capsule sidewall 44, thus realizes the location of adjusting part 50, and the scale now indicated by pointer 58 is the degree of depth that portable circular saw 10 cuts.In the present embodiment, the depth of cut scope of portable circular saw 10 is 0 to 1 cun.Owing to regulating cutting-in by adjusting part 50 along fluting 48, make adjustment process very quick, achieve the coarse adjustment to cutting-in.First cutting-in governor motion 46 realizes regulating depth of cut relative to the mode that head capsule 22 slides by adjusting part 50, makes adjustment operation very fast convenient.
After the position by spanner 54 lock adjustment assembly 50, now operate guard shield 16 and move relative to head capsule 22, guard shield just by the cam surface of spanner 54 institute backstop, defines the position of guard shield 16, and the cutting-in realizing limiting saw blade 14 is the scale of pointer instruction.In the present embodiment, nationality defines the stop surface of backstop guard shield 16 by described cam surface, realize the position limiting guard shield 16, certain those skilled in the art also may adopt other technologies scheme, such as arrange with the synkinematic stop part of installing plate 52 1 with backstop guard shield 16, and on stop part, form described stop surface.Those skilled in the art also may make other and change, and no longer describe in detail as space is limited.
Refer to Fig. 1, Fig. 2 and Fig. 4.Guard shield 16 can accommodate saw blade 14 jointly with head capsule 22, and guard shield 16 can slide relative to head capsule 22, makes guard shield 16 have primary importance and the second place.As shown in Figure 2, when guard shield 16 is in primary importance, saw blade 14 entirety is housed in the space that guard shield 16 and head capsule 22 surround, and as shown in Figure 4, when guard shield 16 is in the second place, saw blade 14 stretches out guard shield 16 can carry out cutting work.
Refer to Fig. 5, guard shield 16 comprise for against workpiece base plate 60, for coordinate with locating part 45 guide rail 62, for accommodating the saw blade host cavity 64 of saw blade 14.
Base plate 60 has for the abutment face 66 against workpiece, and when portable circular saw 10 cut workpiece, abutment face 66 is resisted against surface of the work, and can slide relative to surface of the work, makes saw blade 14 cut workpiece.Base plate 60 is also provided with saw blade through hole 68 be provided for saw blade 14 and extend there through, when guard shield 16 is positioned at primary importance, saw blade 14 does not pass from saw blade through hole 68, and when guard shield 16 is positioned at the second place, saw blade 14 passes from saw blade through hole 68.
Guide rail 62 is installed on base plate 60, and for coordinating with locating part 45, realizing guard shield 16 can slide relative to head capsule 22.In the present embodiment, the quantity of guide rail 62 is two, when guard shield 16 is assembled to portable circular saw 10, two guide rails 62 coordinate with the locating part 45 be arranged on two head shell side walls 44 respectively, guard shield 16 is slided relative to portable circular saw 10, and saw blade host cavity 64 can be contained in head capsule 22 inside.
Guard shield 16 is also provided with the second cutting-in governor motion 70 cutting-in of portable circular saw 10 being carried out to fine tuning, be applicable to when the first cutting-in governor motion 46 is in predetermined cutting-in position, regulated further by the second cutting-in governor motion 70 pairs of cutting-ins, make cut edge 19 realize precise cutting with second surface 47b is tangent.Second cutting-in governor motion 70 is arranged between guard shield 16 and the first cutting-in governor motion 46, after the first cutting-in governor motion 46 has regulated, by the distance between the described stop surface of the second cutting-in governor motion 70 fine adjustments first cutting-in governor motion 46 and the abutment face 66 of guard shield 16, fine setting cutting-in can be realized.Second cutting-in governor motion 70 can be arranged on guard shield 16, also can be set directly on the first cutting-in governor motion 46, in the present embodiment, guard shield 16 has lug boss 69, second cutting-in governor motion 70 is arranged on lug boss 69, when guard shield 16 moves to the second place, the second cutting-in governor motion 70 and the first cutting-in governor motion 46 abut against, and realize the position limiting guard shield 16.
Second cutting-in governor motion 70 can automatically lock adjusting position, namely after exercisable adjustment second cutting-in governor motion 70, second cutting-in governor motion 70 stops position after adjustment immediately, makes the second cutting-in governor motion 70 have very high degree of regulation.In the present embodiment, the second cutting-in governor motion 70 comprises the screwed hole 72 be arranged on guard shield 16, the screw 74 connected with described screwed hole 72 phase screw thread.Screwed hole 72 is arranged on the side that guide rail 62 closes on the first cutting-in governor motion 46, and screw 74 has the head abutted against with spanner 54, and has externally threaded afterbody, and screw 74 is by described afterbody and screwed hole 72 phase threaded engagement.When being regulated cutting-in by the second cutting-in governor motion 70, user can operate described head with rotating screw 74, and now screw 74 can produce certain displacement along the direction of the center line of screw hole 72, realizes regulating cutting-in.In process due to rotating screw 74, screw 74 along centerline direction translational speed slowly, make degree of regulation very high, achieve the fine tuning to cutting-in; Moreover screw 74 adopts threaded engagement with screwed hole 72, make screw 74 can automatic spacing, namely user stop operating screw 74 time, screw 74 just can not move along the direction of center line again, realizes accurately spacing.
Certainly, second cutting-in governor motion 70 can also be arranged to other structures, such as on guard shield 16, be fixedly installed threaded post, threaded post arranges nut, and described nut and the first cutting-in governor motion 46 abut against, and regulate cutting-in further by rotating nut, further, described threaded post also can be arranged on the adjusting part 50 of the first cutting-in governor motion 70, as being arranged on installing plate 52 or connector 56, and abutting against realization with guard shield 16 and regulates cutting-in further.The structure of the second cutting-in governor motion 70 is not limited to the mode that screw thread connects, and it can also adopt cam structure.Such as, the position that guard shield 16 arranges screwed hole 72 arranges a cam member that can rotate relative to guard shield 16, after setting the first cutting-in governor motion 46, operation portable circular saw 10 carries out cutting work, now guard shield 16 moves relative to head capsule 22 and described cam member and spanner 54 is abutted against, now just can change by rotating described cam member the position that described cam member and spanner 54 abut against, realize the distance between adjustment first cutting-in governor motion 46 and guard shield 16, and then realize fine adjustments cutting-in.Certainly, those skilled in the art also may make other and change under the enlightenment of the technology of the present invention marrow, as long as but its function and effect and the present invention is same or similar all should be covered by scope.
Screw 74 is caused to change relative to the position of screwed hole 72 in order to prevent the vibrations produced in cutting process, between screw 74 and the sidewall of screwed hole 72, flexible member is set, namely spring 76 is set between described head and the lug boss 69 of guard shield 16, make coordinating more closely between screw 74 with screwed hole 72, improve reliability of structure.
Second cutting-in governor motion 70 regulates cutting-in by rotating manner, make the velocity ratio of adjustment comparatively slow, but degree of regulation is high.The first cutting-in governor motion 46 of cutting-in and the second cutting-in governor motion 70 by rotating manner adjustment cutting-in is regulated by sliding type because portable circular saw 10 has, make portable circular saw 10 fast can regulate cutting-in accurately, bring facility to user.Certainly; the concrete structure of the first cutting-in governor motion 46 is not limited to aforementioned description; those skilled in the art also may make other and change; as long as but all should be encompassed in scope by the function that sliding type realizes quick adjustment cutting-in; in like manner; the concrete structure of the second cutting-in governor motion 70 is not limited to aforementioned description; those skilled in the art also may make other and change, as long as but all should be encompassed in scope by the function that rotating manner realizes meticulous adjustment cutting-in.
When observing adjustment screw 74 for the ease of user, described head is along the distance of described center line movement, the position that guide rail 62 closes on screwed hole 72 is provided with reference mark 78, when described head back to the lower surface of the first cutting-in governor motion 46 and described reference mark 78 on time, now screw 74 is in initial position.When being in initial position by screw 74, the aperture of described lower surface distance screwed hole 72 also has certain distance, make screw 74 towards the direction adjusting position of screwed hole 72, thus can also increase the adjustable range of the second cutting-in governor motion 70 relative to initial position.
Certainly, the second cutting-in governor motion 70 also can be arranged on the adjusting part 50 of the first cutting-in governor motion 46.Be arranged on connector by screwed hole 72, be threaded mutually with screwed hole 72 by screw 74, guard shield 16 arrange projection and abuts against, when adjustment screw 74 with screw 74, the distance between guard shield 16 and the first cutting-in governor motion 46 can be regulated, realize regulating cutting-in.
Refer to Fig. 4, in the present embodiment, the thickness of workpiece 47 is 1 cun, because workpiece can exist error unavoidably in processing and manufacturing process, when making the first cutting-in governor motion 46 regulate cutting-in to be 1 cun, workpiece 47 can not be cut and wear by saw blade 14 just, and such as saw blade 14 can exceed the second surface 47b sub-fraction of workpiece 47.Adjustment second cutting-in governor motion 70 is now needed to carry out fine tuning, namely by rotating screw 74 to increase the distance between described stop surface and abutment face 66, make to reduce depth of cut, as shown in Figure 6, now the cut edge 19 of saw blade 14 just and second surface 47b tangent, saw blade 14 can be cut accurately and wear workpiece 47, and second surface 47b can not be exceeded namely can not destroy holding articles below workpiece 47.
Refer to Fig. 7, saw blade 14 has the cut direction F paralleled with abutment face 66, user can promote along cut direction F the workpiece 73 that portable circular saw 10 cuts predetermined thickness, workpiece 73 has the first surface 73a and second surface 73b that are parallel to each other, and the distance between first surface 73a and second surface 73b is described predetermined thickness.Guard shield 16 is provided with the first cue mark 80.First cue mark 80 can when saw blade 14 cuts the workpiece 73 of predetermined thickness, instruction saw blade 14 stretches out second surface 73b foremost along cut direction F, thus saw blade 14 clearly can be indicated to cut the physical location of wearing workpiece 73 to user, bring great convenience to the cutting operation of user.
Accordingly, in order to clear instruction saw blade 14 stretches out the width of second surface 73b, also can the second cue mark 82 be set on guard shield 16, to indicate the least significant end stretching out second surface 71b along cut direction F saw blade 14.When user carries out fixed length cutting on workpiece 73, can draw cut mark at workpiece 73 is such as beginning label and end mark, the second cue mark 82 on guard shield 16 can be aimed at described beginning label by user, and start cut workpiece, immediately to and the direction of end mark promote portable circular saw 10, when the first cue mark 80 on guard shield 16 and described beginning label are on time, then workpiece 73 is cut completely from beginning label to end mark and is worn, make process simple, and have very high machining accuracy.Further, if when utilizing portable circular saw 10 to cut next part on the workpiece of a monoblock predetermined thickness, such as from the little plank that a bulk of plank cutting is next square, every bar limit of now cutting all is equivalent to a fixed length cutting, and after completing the fixed length cutting of four edges, the size of little plank just meets the requirements just, without the need to again processing.
Certainly, multiple first cue mark 80 can be set on guard shield 16, and the workpiece 73 of the corresponding different-thickness of each first cue mark 80, instruction saw blade 14 stretches out the second surface 73b of workpiece 73 foremost along cut direction F.In like manner, correspondingly, multiple second cue mark 82 also can be set to indicate rearmost end.Further, see also Fig. 7 and Fig. 9, the position that guard shield 16 closes on each cue mark arranges scale, by the thickness of workpiece 73 corresponding to described scale mark cue mark.In the present embodiment, be provided with three the first cue marks 80, be provided with three the second cue marks 82 accordingly.Further, on base plate 60, the position of corresponding each first cue mark 80 and the second cue mark 82 arranges scale, represents that cue mark corresponds to the workpiece of 1/4 cun, 1/2 cun and 3/4 cun thickness respectively.And be provided with cue mark and scale at guard shield 16 relative to the both sides of saw blade 14, make user can observe the cue mark of either side, determine the state of cutting, bring facility to user.Certainly, also only at guard shield 16, cue mark and scale can be set near the side of user, during use, also can realize clearly indicating saw blade to cut the position of wearing workpiece.
See also Fig. 7 and Fig. 8, when saw blade 14 cut workpiece 47, the cut edge 19 of saw blade 14 and second surface 47b crossing formation first intersection point 86 of workpiece 47 and the second intersection point 88.First intersection point 86 stretches out the position foremost of second surface 73b to overlapping with saw blade 14 along cut direction F, second intersection point 88 and saw blade 14 stretch out the rearmost end of second surface 73b position along cut direction F coincides, make the first cue mark 80 corresponding with the first intersection point 86, namely the first cue mark 80 indicates the position of the first intersection point 86, in like manner the second cue mark 82 is corresponding with the second intersection point 88, and namely the second cue mark 82 indicates the position of the second intersection point 88.Certainly, also can the first cue mark 80 be only set on guard shield 16 or the position that the second cue mark 82 indicates the first intersection point 86 or the second intersection point 88 accordingly is only set.
The cue mark described in present embodiment only when portable circular saw 10 is in maximum cutting-in the cutting of workpiece of indicating predetermined thickness wear position; correspondingly; cue mark also can be set to play and indicative function identical above when portable circular saw 10 is in a certain specific depth of cut; or; under the enlightenment of the technology of the present invention marrow; those skilled in the art also may make other and change, and all should be covered by scope.
Embodiment of the present invention also provides a kind of cutting-in control method, and this cutting-in control method comprises:
Step S1: regulate the first cutting-in governor motion 46, cutting-in is adjusted to the scale corresponding with the thickness of workpiece 47.User regulates the adjusting part 50 of the first cutting-in governor motion 46, makes pointer 58 indicate the scale corresponding with the thickness of workpiece 47.
Step S2: regulate the second cutting-in governor motion 70, makes the cut edge 19 of the saw blade 14 of portable circular saw 10 tangent with second surface 47a.User observes saw blade 14 and the position relationship of workpiece 47, regulates the screw of the second cutting-in governor motion 70, makes the cut edge 19 of saw blade 14 tangent with the second surface 47a of workpiece 47, makes saw blade 14 just cut off workpiece 47.
Second embodiment of the invention provides a kind of portable circular saw, described portable circular saw is substantially identical with the functional structure of the portable circular saw 10 that the first embodiment provides, its difference is divided and is: refer to Figure 10 and Figure 11, second cutting-in governor motion 90 comprises the gear 92 be arranged on guard shield 16, the tooth bar 94 driven by gear 92, and the locking member 96 of lock gear 92 position.
Gear 92 is rotating to be arranged on the lug boss 69 of guard shield 16, and the transmitting gear 92 of user-operable is to regulate cutting-in.In the present embodiment, gear 92 one-tenth is cylindric, is first flank of tooth 98 along its circumference, is locking face 100 relative to two sections of the flank of tooth.User is moved with transmitting gear 92 and then band carry-over bar 94 by promotion first flank of tooth 98.After user to be completed by gear 92 and regulates cutting-in, coordinated with locking face 100 by locking member 96, realize the position of lock gear 92, make the second cutting-in governor motion 90 be locked in cutting-in when having regulated.
Tooth bar 94 lengthwise extends, and it has second flank of tooth 102 be meshed with described first flank of tooth 98, is with carry-over bar 94 to move when gear 92 is rotated by intermeshing first flank of tooth 98 and second flank of tooth 102.Tooth bar 94 is abutment end along its longitudinally one end, the end face of described abutment end is confined planes 104, second cutting-in governor motion 90 is abutted against by the described stop surface of confined planes 104 and the first cutting-in governor motion 46, namely abut against with the cam surface of spanner 54, realize the position by adjusting gear rack 94, realize regulating the distance between the described stop surface of portable circular saw and abutment face 66 further, namely realize, after the first cutting-in governor motion 46 completes adjustment cutting-in, being regulated further by the second cutting-in governor motion 90 pairs of cutting-ins.
Locking member 96 can the position of lock gear 90, and gear 90 cannot be rotated, and engage each other by first flank of tooth 98 and second flank of tooth 102, the position realizing tooth bar 94 is locked, and makes the second cutting-in governor motion 90 be locked in some predetermined cutting-ins.In the present embodiment, locking member 96 is a locking wrench, and it is rotating is arranged on the lug boss 69 of guard shield 16, and has inclined-plane 106, locking member 96 can apply pressure by inclined-plane 106 to the locking face 100 of gear 92, realizes the position of lock gear 92.Preferably, locking member 96 has gear resettlement section 108, and this gear resettlement section 108 has two relative inclined-planes 106 also coordinated with two locking faces 100 respectively.The exercisable rotation relative to guard shield 16 of locking member 96 makes it have inclined-plane 106 and locking face 100 to be separated to discharge the off-position of gear 92 and inclined-plane 106 applies pressure with the locked position of locking gear 92 to locking face 100.When locking member 96 is in off-position, the transmitting gear 92 of user-operable is to regulate cutting-in, when locking member 96 is in locked position, pressure is applied to gear 92 by inclined-plane, the position of gear 92 is made to be locked the position of tooth bar 94 is locked, the position of the locking second cutting-in governor motion 90 of realization.
Certainly, locking member 96 can also be arranged to other structures, ratio is if execute stressed resilient key to locking face 100, or locking member 96 does not arrange gear resettlement section 108 and only arranges an inclined-plane to gear 92 and applies pressure, then or realized the turning cylinder of lock gear 92 by other Machine Designs.Under the enlightenment of the technology of the present invention marrow, those skilled in the art also may make other and change, and will not enumerate as space is limited at this, as long as but its function and effect and the present invention is same or similar all should be covered by scope.
The present invention is not limited to aforementioned embodiments, those skilled in the art also may make under the enlightenment of the technology of the present invention marrow other change, as long as but its realize function and the present invention same or similar, all should be covered by scope.
Claims (7)
1. a portable circular saw, for cutting the workpiece of predetermined thickness, the workpiece of described predetermined thickness has towards the first surface of described portable circular saw and the second surface back to described portable circular saw, and described portable circular saw comprises:
For cutting the saw blade of described workpiece, described saw blade has circular cutting edge, and when described saw blade cuts described workpiece, described cut edge and described second surface have the first intersection point and the second intersection point;
Housing;
Be housed in described housing, and drive the motor of described saw blade;
Be resisted against the base plate of described first surface;
It is characterized in that:
Described base plate is provided with cue mark, and described cue mark can indicate when described portable circular saw is in maximum cutting-in and cuts described workpiece, at least one position in described first intersection point and described second intersection point.
2. portable circular saw according to claim 1, it is characterized in that: the quantity of described cue mark is at least two, described at least two cue marks when described saw blade cuts described workpiece, can indicate the position of described first intersection point and described second intersection point.
3. portable circular saw according to claim 1, is characterized in that: on described base plate, corresponding described cue mark is provided with scale, and described scale is the thickness of described workpiece.
4. a portable circular saw, for cutting the workpiece of predetermined thickness, the workpiece of described predetermined thickness has towards the first surface of described portable circular saw and the second surface back to described portable circular saw, and described portable circular saw comprises:
For cutting the saw blade of described workpiece, cut described workpiece along the cut direction parallel with described second surface;
Housing;
Partial receipt in described housing, and drives the motor of described saw blade;
Be resisted against the base plate of described first surface;
It is characterized in that:
Described base plate is provided with cue mark, and described cue mark can, when described saw blade cuts described workpiece, indicate described saw blade to stretch out described second surface foremost along described cut direction.
5. portable circular saw according to claim 4, it is characterized in that: the quantity of described cue mark is at least two, described at least two cue marks can when described saw blade cuts described workpiece, indicate described saw blade along described cut direction stretch out described second surface foremost and rearmost end.
6. portable circular saw according to claim 4, is characterized in that: on described base plate, corresponding described cue mark is provided with scale, and described scale is the thickness of described workpiece.
7. portable circular saw according to claim 4, it is characterized in that: described portable circular saw has cutting-in governor motion, described cue mark is used for when described cutting-in governor motion is in a predetermined cutting-in, indicates described saw blade to stretch out described second surface foremost along described cut direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009006.6A CN103203777B (en) | 2012-01-12 | 2012-01-12 | Portable circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009006.6A CN103203777B (en) | 2012-01-12 | 2012-01-12 | Portable circular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103203777A CN103203777A (en) | 2013-07-17 |
| CN103203777B true CN103203777B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210009006.6A Active CN103203777B (en) | 2012-01-12 | 2012-01-12 | Portable circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103203777B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2839098A (en) * | 1956-12-28 | 1958-06-17 | Millers Falls Co | Cut-line indicator for portable circular saw |
| CN1457958A (en) * | 2002-04-26 | 2003-11-26 | 密尔沃基电动工具公司 | Tool element and marking system |
| CN1899762A (en) * | 2005-07-20 | 2007-01-24 | 创科实业有限公司 | Laser generator mounted on a fixed component of a handheld cutting device |
| CN101863047A (en) * | 2009-04-20 | 2010-10-20 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| JP2011131539A (en) * | 2009-12-25 | 2011-07-07 | Hitachi Koki Co Ltd | Portable cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070163129A1 (en) * | 2005-12-29 | 2007-07-19 | Vogelgesang Joseph C | Depth-of-cut gauge for a power saw |
-
2012
- 2012-01-12 CN CN201210009006.6A patent/CN103203777B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2839098A (en) * | 1956-12-28 | 1958-06-17 | Millers Falls Co | Cut-line indicator for portable circular saw |
| CN1457958A (en) * | 2002-04-26 | 2003-11-26 | 密尔沃基电动工具公司 | Tool element and marking system |
| CN1899762A (en) * | 2005-07-20 | 2007-01-24 | 创科实业有限公司 | Laser generator mounted on a fixed component of a handheld cutting device |
| CN101863047A (en) * | 2009-04-20 | 2010-10-20 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| JP2011131539A (en) * | 2009-12-25 | 2011-07-07 | Hitachi Koki Co Ltd | Portable cutter |
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| Publication number | Publication date |
|---|---|
| CN103203777A (en) | 2013-07-17 |
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