CN102371394B - Portable cutting machine - Google Patents
Portable cutting machine Download PDFInfo
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- CN102371394B CN102371394B CN 201110237820 CN201110237820A CN102371394B CN 102371394 B CN102371394 B CN 102371394B CN 201110237820 CN201110237820 CN 201110237820 CN 201110237820 A CN201110237820 A CN 201110237820A CN 102371394 B CN102371394 B CN 102371394B
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- portable cutter
- swinging shaft
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Abstract
The invention provides a portable cutting machine, which comprises a shell, a swing output shaft, a motor, a transmission mechanism, a saw blade and a supporting assembly, wherein the swing output shaft partially extends out of the shell and outputs swing; the motor is held in the shell and outputs rotation; the transmission mechanism is used for converting the rotation of the motor into swing of the swing output shaft; the saw blade is arranged on the swing output shaft and used for swing cutting, and the saw blade forms a swing plane; and the supporting assembly is connected with the shell and propped against a workpiece. According to the portable cutting machine, the supporting assembly is propped against the surface of the workpiece, so that the cutting process of the portable cutting machine is more stable and reliable, and the cutting precision of a user is improved.
Description
Technical field
The present invention relates to a kind of portable cutter, relate in particular to the portable cutter that swings cut workpiece.
Background technology
The existing portable cutter that swings cut workpiece by driving saw blade, its inside be provided with motor, cooperate by motor-driven eccentric part, with eccentric part with rotation convert the shift fork of swing to, by the swinging shaft of described shift fork drive and be installed in saw blade on the swinging shaft.
Because described portable cutter is in cutting process, the user need to make described portable cutting machine in vacant state all the time, with the control cutting process, yet owing to user's arm is very easy to shake, this causes cutting accuracy relatively poor, can't satisfy user's demand.
Summary of the invention
The invention provides a kind of portable cutter, especially provide a kind of cutting process stable portable cutter.
For achieving the above object, technical scheme of the present invention is: a kind of portable cutter comprises: housing; Part is stretched out the swinging shaft of described housing and output swing; Be housed in the motor in the described housing, and output is rotated; The rotation of described motor is converted to the transmission mechanism of the swing of described swinging shaft; Be installed in the saw blade that swings cutting on the described swinging shaft, described saw blade forms swinging plane; Described portable cutter also comprises and is connected and is used for supporting component against described workpiece with described housing.
Preferably, described supporting component has the abutment face against workpiece, and the axis of described swinging shaft is parallel with described abutment face.
Preferably, described supporting component has the base plate that described abutment face is set, and described base plate is with respect to the position-adjustable of described swinging shaft.
Preferably, described swinging plane is vertical with described abutment face, makes described swinging plane at the straight line that is projected as of described abutment face, and described base plate only can be along the bearing of trend of described straight line with respect to described swinging shaft adjusting position.
Preferably, supporting component comprises for the base plate against workpiece, and described base plate arranges the guide roller of promising described saw blade guiding.
Preferably, described base plate has the fluting that stretches out for described saw blade, and the quantity of described guide roller is two, and is arranged on described fluting along the end of described swinging plane away from described swinging shaft, and described saw blade is between two described guide rollers.
Preferably, described saw blade is provided with sawtooth away from the end of described swinging shaft, and described sawtooth comprises crown and the tooth root for cutting, the zone that described saw blade contacts with described guide roller extremely the distance of described tooth root greater than 1 millimeter and less than 20 millimeters.
Preferably, be provided with in described portable cutter and accommodate the supporting seat that supports described transmission mechanism, described housing, described motor and described supporting component all directly are fixedly connected with described supporting seat.
Preferably, described base plate has connector, and described housing has the head capsule that described tool drives axle is installed, and described connector is socketed on the described head capsule, and joins with described head capsule phase shape.
Preferably, described swinging shaft is equipped with saw blade, and described connector is sandwiched between described saw blade and the described head capsule.
Preferably, described connector adopts flexible material to make.
Preferably, between described connector and the described head capsule skid resistant course is set.
Compared with prior art, portable cutter of the present invention, by being set, supporting component is resisted against surface of the work, make the cutting process of portable cutter more reliable and more stable, improved user's cutting accuracy, and user's arm can not be in vacant state in cutting process, so realizes having saved user's muscle power, has improved operational comfort.
Description of drawings
The invention will be further described below in conjunction with drawings and embodiments.
The stereogram of a kind of portable cutter that Fig. 1 provides for first embodiment of the invention;
Fig. 2 is the schematic diagram of portable cutter described in Fig. 1;
Fig. 3 is the schematic diagram of portable cutter described in Fig. 1;
Fig. 4 is the schematic diagram of portable cutter described in Fig. 1;
Fig. 5 is that portable cutter described in Fig. 2 is along the cutaway view of straight line P-P;
Fig. 6 is that portable cutter described in Fig. 1 is removed left half housing stereogram afterwards;
Fig. 7 is that portable cutter described in Fig. 6 is further removed supporting seat stereogram afterwards;
Fig. 8 is the perspective exploded view of motor and the driving shaft of portable cutter described in Fig. 1;
Fig. 9 is the perspective exploded view of the swinging shaft of portable cutter described in Fig. 1;
Figure 10 is the stereogram after motor, supporting seat and the swinging shaft of portable cutter described in Fig. 6 assembled;
Figure 11 is the front view that the supporting seat of portable cutter described in Figure 10 is used for connecting a side of motor, and wherein tool drives axle and shift fork are installed on the described supporting seat;
Figure 12 is the upward view of supporting seat described in Figure 11;
Figure 13 is the part perspective exploded view of motor, supporting seat and driving shaft described in Figure 10;
Figure 14 is the schematic diagram of the saw blade of portable cutter described in Fig. 1;
Figure 15 is the perspective exploded view of the supporting component of portable cutter described in Fig. 1;
Figure 16 is the stereogram of the supporting component of portable cutter described in Fig. 1;
Figure 17 is the schematic diagram that portable cutter is installed fan-shaped saw blade described in Fig. 1;
Figure 18 is the phantom of portable cutter described in Fig. 3, and wherein electric machine casing is partly cut to show open the air channel entrance;
Figure 19 is that portable cutter described in Fig. 2 is along the cutaway view of straight line I-I;
The schematic diagram of the saw blade of a kind of portable cutter that Figure 20 provides for second embodiment of the invention;
The schematic diagram of the saw blade of a kind of portable cutter that Figure 21 provides for third embodiment of the invention;
The schematic diagram of the saw blade of a kind of portable cutter that Figure 22 provides for four embodiment of the invention;
Figure 23 is the part schematic diagram of saw blade among Figure 22, and wherein sawtooth extends along the direction opposite with the base portion bearing of trend;
The side view of a kind of portable cutter that Figure 24 provides for fifth embodiment of the invention;
Figure 25 is the decomposed schematic diagram of portable cutter described in Figure 24;
Figure 26 is the stereogram of the connector of supporting component among Figure 25;
Figure 27 is the stereogram of the base plate of supporting component among Figure 25;
The schematic diagram of a kind of supporting component that Figure 28 provides for sixth embodiment of the invention;
Figure 29 is the schematic diagram of supporting component among Figure 28;
Figure 30 is the decomposed schematic diagram of supporting component among Figure 29;
The schematic diagram of a kind of supporting component that Figure 31 provides for seventh embodiment of the invention;
Figure 32 is the schematic diagram of supporting component among Figure 31.
Wherein,
10. portable cutter 20. saw blades 32. switch modules
12. housing 21. supporting components 33. guidance sets
14. part is triggered in motor 22. motor resettlement sections 34.
15. power brick 23. fresh air inlets 35. left half housings
16. swinging shaft 24. transmission mechanism resettlement sections 36. control elements
18. transmission mechanism 26. power brick resettlement sections 37. right half housings
19. end wall 28. grip parts 38. motor shafts
40. electric motor fan 88. second perforates 146. second sidewalls
42. power line 89. chocks 148. base portions
44. driving shaft 90. connecting portions 150. installing holes
45. the first spring bearing 92. base portions 152. saw blades
46. eccentric part 94. installing holes 154. installing holes
47. driving shaft support member 96. first sides 156. connecting portions
48. shift fork 98. surfaces 158. second sidewalls
49. resettlement section 100. sawtooth sections 160. base portions
50. axis hole 102. base plates 162. sawtooth sections
51. mating part 104. coupling assemblings, 164. first sides
166. portable cutters 52. spline 106. saw blades are slotted
53. screw 108. guidance sets 168. housings
54. eccentric shaft 112. is regulated fluting 170. swinging shafts
55. fixture 114. lock-screws 172. supporting components
56. capacity eccentric bearing 115. nuts 174. securing members
58. drive division 116. bearings 175. packing rings
60. installation portion 118. assemblies 176. saw blades
62. the first actuating arm 122. connecting plates 178. body shells
64. the first drive surface 124. air outlets 180. head capsules
70. instrument installation end 125. baffle plates 182. connectors
72. the second spring bearing 126. air channel entrances 184. base plates
74. the 3rd spring bearing 128. through holes 186. first housings
76. securing member 130. saw blades 188. second housings
77. packing ring 132. installing holes 190. circular ports
78. supporting seat 134. connecting portions 192. annular steel rings
80. the first host cavity 136. second sidewalls 193. screw holes
82. the second host cavity 138. base portions 194. counterparts
83. screw 139. sawtooth sections 196. are against plate
84. opening 140. saw blades 198. guidance sets
86. the first perforate 142. installing holes 200. through holes
87. screw 144. connecting portions 202. bottom plate screw holes
204. screw 216. base plates 228. are slotted against plate
206. fixed head 218. installing plates 230. supporting components
208. roller 220. is against plate 232. against plate
222. guidance sets, 233. butting sections 210. fixed head is slotted
212. supporting component 224. upper surfaces 234. guidance sets
214. connector 226. flutings
The specific embodiment
Consult Fig. 1, Fig. 5 and Fig. 6, first embodiment of the invention provides a kind of portable cutter 10 to comprise housing 12, is housed in the motor 14 in the housing 12, the power brick 15 of electric energy is provided for described motor 14, swinging shaft 16 by motor 14 drivings, transmission mechanism 18 between motor 14 and swinging shaft 16, be installed in the saw blade 20 that is used for cutting work on the swinging shaft 16, be used for being resisted against the supporting component 21 that workpiece (not shown) surface to be cut provides support for portable cutter 10.
See also Fig. 1, Fig. 3 and Fig. 4, motor resettlement section 22 integral body are the drum of hollow, and because whole lengthwise extends to form motor resettlement section lengthwise bearing of trend.Along described motor resettlement section lengthwise bearing of trend, thereby motor resettlement section 22 1 end closures have end wall 19, and the other end is connected with transmission mechanism resettlement section 24, and have the circumferential side wall that circumferentially centers on motor 14.Be provided with fresh air inlet 23 at end wall 19, realize heat radiation so that air-flow circulates.Described circumferential side wall in motor resettlement section 22 is provided with the support bar (not shown) of extending along motor resettlement section lengthwise bearing of trend, and described support bar is no less than three along circumferential arrangement and the quantity of motor resettlement section lengthwise bearing of trend, to be used for motor 14 stable being supported in the motor resettlement section 22.
See also Fig. 1 and Fig. 6, power brick resettlement section 26 is connected with transmission mechanism resettlement section 24, and be set up in parallel mutually with grip part 28, namely extend along described grip part lengthwise bearing of trend, when the user used portable cutter 10 to cut work, power brick resettlement section 26 was positioned at the grip part back to user's a side.Power brick resettlement section 26 is the drum of hollow, one end is connected to transmission mechanism resettlement section 24, its other end sealing arranges, thereby formed relatively airtight receiving space in 26 inside, power brick resettlement section, can prevent the contamination by dust that power brick 15 is produced by work or be knocked and destroy, moreover can prevent effectively that power brick 15 from losing.
In order to improve the stability of portable cutter 10 in cutting process, the surface of power brick resettlement section 26 towards workpiece can be resisted against on the workpiece, make the propelling portable cutter 10 that the user can be stable carry out cutting work, and need not to be in vacant state with force retaining portable cutter 10, thereby when having realized improving cutting stability, saved again user's muscle power, brought great advantage to the user.In order to strengthen the wearability on described surface, can wear-resistant coating be set on described surface, other anti-wear components such as metal derby etc. perhaps are installed.
Control portable cutter 10 also is installed on housing 12 whether starts the switch module 32 that carries out work.Switch module 32 comprises the triggering part 34 and the control element 36 that is connected with power brick 15 and motor 14 for user operation, and pass through of user-operable triggers part 34 and control control elements 36, with startup or close portable cutter 10.After switch module 32 is assembled to portable cutter 10, its integral body between grip part 28 and power brick resettlement section 26 so that user operation, in the present embodiment, switch module 32 is arranged on the grip part 28, and control element 36 is housed in 28 inside, grip part rationally utilizing the inner space of grip part 28, and the user is easy and simple to handle.
Processing and manufacturing for the ease of housing 12, can be along described grip part lengthwise bearing of trend with a housing left side half housing 35 that part transmission mechanism resettlement section 24, part grip part 28 and part power brick resettlement section 26 form of serving as reasons in 12 minutes, and the right side half housing 37 that is formed by motor resettlement section 22, part transmission mechanism resettlement section 24, part grip part 28 and part power brick resettlement section 26.Left half housing 35 and right half housing 37 adopt respectively one-body molded making, and so arrange to realize housing 12 easy processing and manufacturings, and are convenient to assembling.
Further, portable cutter 10 also can not have power brick 15, and is only powered by AC power, and just need not arrange power brick resettlement section 26 on the housing 12 this moment, thereby reduced machine volume.Moreover saved cost.
See also Fig. 2 and Fig. 5, motor 14 is housed in 22 inside, motor resettlement section, comprises stator, rotor and the motor shaft 38 that extends in the same way with described motor resettlement section lengthwise bearing of trend and the electric motor fan 40 that promising motor 14 dispels the heat is installed at motor shaft 38.Along described motor resettlement section lengthwise bearing of trend, electric motor fan 40 when it rotates, can be with moving air flow to enter from fresh air inlet 23 and blow to described stator and described rotor realization heat radiation in the motor resettlement section 22 between the end wall of described rotor and motor resettlement section 22.
In the present embodiment, motor 14 is direct current generator, if portable cutter 10 is arranged to adopt AC-powered, then corresponding motor 14 also can adopt alternating current generator.
The rated speed of motor 14 is more than or equal to 20000 rev/mins, and further the rotating speed of motor 14 is greater than 30000 rev/mins, when satisfying portable cutter 10 this moment and have powerful power, has again preferably service life.
See also Fig. 1, Fig. 7 and Fig. 8, transmission mechanism 18 is contained in the transmission mechanism resettlement section 24, comprise driving shaft 44, be set in the first spring bearing 45 on the driving shaft 44, with the driving shaft support member 47 of the first spring bearing 45 interference fit with supporting driving shaft 44, the shift fork 48 that is installed in the eccentric part 46 on the driving shaft 44 and cooperates with eccentric part 46.In the present embodiment, consist of movement conversion mechanism by eccentric part 46 and shift fork 48, the rotation of motor 14 outputs has been converted to the swing of swinging shaft 16, swung cutting to drive saw blade 20.
Driving shaft 44 and motor shaft 38 coaxial settings are so that the bearing of trend of driving shaft 44 is identical with motor resettlement section lengthwise bearing of trend.Driving shaft 44 is independent of motor shaft 38, and is driven by motor shaft 38, and it has drive axis O-O.Driving shaft 44 1 ends have for the axis hole 50 that connects with motor shaft 38, other end setting-up eccentricity spare 46.The hexagon that axis hole 50 is centrosymmetric, motor shaft 14 is joined with axis hole 50 phase shapes, and so the cooperation between the two is firm, relative sliding can not occur.
In order to reduce the vibrations of driving shaft 44 and motor shaft 14, in axis hole 50, be provided with spline 52, be provided with buffer layer at spline 52 outer surfaces, described buffer layer can be the materials such as rubber, resin.
Certainly, driving shaft 44 can directly be formed by motor shaft 38, and just need not to use spline 52 this moment, and setting-up eccentricity spare 46 cooperates with shift fork 48 on motor shaft 38, and so implementation structure is simple, easily processing and manufacturing, and the transmission process vibrations are less.
Driving shaft support member 47 comprises be used to the resettlement section 49 of accommodating the first spring bearing 45, and centers on the mating part 51 that resettlement section 49 arranged and be used for being fixedly installed to housing 12.Resettlement section 49 is the tubular of hollow, when the first spring bearing 45 is mounted to resettlement section 49, be interference fit between the madial wall of itself and resettlement section 49, thereby realize the position of the first spring bearing 45 by firm restriction, thereby being supported in the driving shaft support member 47 of realizing that driving shaft 44 can be stable.The mating part is fixedly installed on the motor resettlement section 22 by screw 53a and screw 53b, thereby the position of having realized driving shaft support member 47 is fixed.
Further, for the position that makes motor 14 more stable, 49 ends back to motor 14 are equipped with fixture 55 in the resettlement section, and fixture 55 runs through driving shaft support member 47 by two screws and is threaded mutually with screw on the motor 14, fixes along the bearing of trend position of drive axis O-O to realize motor 14.
After driving shaft 44 is mounted to driving shaft support member 47, eccentric part 46 from the resettlement section 49 and fixture 55 central areas stretch out, cooperating with shift fork 48, shift fork 48 swings.
Shift fork 48 is fixedly mounted on the swinging shaft 16, and protrudes from swinging shaft 16 along the circumferential extension of swinging shaft 16, and its bearing of trend forms the shift fork bearing of trend.When portable cutter 10 carries out in the process of work, the movement locus of eccentric part 46 is in the plane of vertical drive shaft axes O-O, in eccentric part 46 and process that shift fork 48 cooperates, the direction that produces between the two is mutually coplanar with the plane at described movement locus place, and namely the direction of frictional force and drive axis O-O are perpendicular.Because described shift fork bearing of trend and described motor shaft bearing of trend do not arrange in the same way, with offset by self part by eccentric part 46 to edge that shift fork 48 applies the frictional force component perpendicular to described shift fork bearing of trend, thereby realize having reduced the edge of shift fork 48 perpendicular to the vibrations on the described shift fork bearing of trend.In the present embodiment, described shift fork bearing of trend and the mutually vertical setting of drive axis O-O bearing of trend, thus so that eccentric part 46 can not produce displacement perpendicular to described shift fork bearing of trend with respect to shift fork 48, so that can not produce frictional force perpendicular to described shift fork bearing of trend between eccentric part 46 and the shift fork 48, realize that shift fork 48 can not produce vibrations along vertical described shift fork bearing of trend.Thus by making eccentric part 46 can not produce displacement perpendicular to described the second lengthwise bearing of trend with respect to shift fork 48, make transmission mechanism 18 basically can not produce vibrations or vibrations less, this moment, portable cutter 10 can adopt rotating speed more than or equal to 20000 rev/mins motor, even adopt rotating speed greater than 30000 rev/mins motor, and has better operational comfort.
See also 7 and Fig. 9, shift fork 48 comprises and wholely extending and the drive division 58 that cooperates with eccentric part 46 and the installation portion 60 that is connected with described swinging shaft 16 along described shift fork bearing of trend.
For the structure that makes shift fork 48 more stable, between the first actuating arm 62a and the second actuating arm 62b, be connected with linking arm 64, and linking arm 64 and the first actuating arm 62a and the second actuating arm 62b adopt one-body molded making, and make thus the integrated stress intensity of shift fork 48 reach best.
See also Fig. 6, Fig. 7 and Figure 10, in order to make eccentric part 46 and shift fork 48 not by contamination by dust, to avoid between the two frictional force large and damage, in portable cutter 10, be provided with the receiving space of a sealing, eccentric part 46 and shift fork 48 are housed in the described receiving space, to keep between the two not by contamination by dust, keep lubricated mated condition.In the present embodiment, portable cutter 10 also is provided with supporting seat 78 in housing 12, cooperates with driving shaft support member 47 by supporting seat 78 to form described receiving space.
See also Fig. 7, Figure 11 and Figure 12, be formed with in the supporting seat 78 be used to first host cavity 80 of accommodating eccentric part 46 and part shift fork 48, and be communicated with and be mainly used in accommodating the second host cavity 82 of swinging shaft 16 with described the first host cavity.The first host cavity 80 has the openend matched with the resettlement section 49 of driving shaft support member 47, when driving shaft support member 47 is assembled to supporting seat 78, the entity part of resettlement section 49 is housed in the described openend, thereby realize that eccentric part 46 can stretch into the first host cavity 80, to cooperate with shift fork 48.Further screw 53a and screw 53b are threaded mutually with screw 83a and screw 83b on being arranged on supporting seat 78, are fixedly connected with between realization housing 12, driving shaft support member 47 and supporting seat 78 threes, thereby make the stabilized structure of portable cutter 10.
See also Figure 11, Figure 12 and Figure 13, be mounted on the supporting seat 78 for the ease of swinging shaft 16, away from the sidewall of the first host cavity 80 opening 84 is set at the second host cavity 82, and the first perforate 86 and second perforate 88 of offering along the direction of the drive axis O-O of motor 14, to be respectively applied to accommodate part swinging shaft 16.Shift fork 48 stretches into swinging shaft 16 the second host cavity 82 and fits together with shift fork 48 from the first perforate 86 again after opening 84 stretches into described receiving space, realizes that so swinging shaft 16 and shift fork 48 are mounted to supporting seat 78.Further, supporting seat 78 is provided with the chock 89 of joining with opening 84 phase shapes, realize after swinging shaft 16 and shift fork are mounted to supporting seat 78, make supporting seat 78 inside form the receiving space of sealing, namely this moment, the first host cavity 80 and the second host cavity 82 formed airtight described receiving space of accommodating eccentric part 46 and shift fork 48.
In the present embodiment, in order to make supporting seat 78 better stress intensity is arranged, and have preferably thermal diffusivity, supporting seat 78 is made for metal material, and preferably, it is made for aluminum alloy materials.
See also Figure 14, on supporting seat 78, also be provided with for the screw 87 that is fixedly connected with supporting component 21, thereby realize supporting component 21 firm being fixed on the portable cutter 10.Because housing 12, motor 14, transmission mechanism 18, swinging shaft 16 and supporting component 21 in the portable cutter 10 all directly are fixedly connected with mutually with supporting seat 78, each part of realizing portable cutter 10 links together mutually closely, make integrated stress intensity reach best, and reduced to the full extent vibrations.
See also Fig. 7 and Fig. 9, swinging shaft 16 has output shaft axis R-R, and swinging shaft 16 centers on the hunting frequency of output shaft axis R-R more than or equal to 20000 rev/mins, thereby further drive saw blade 20 and carry out cutting work, higher cutting efficiency is arranged, further, the hunting frequency of swinging shaft 16 has better cutting efficiency this moment greater than 30000 rev/mins.
Output shaft axis R-R and the drive axis O-O of swinging shaft 16 be arranged in parallel.So arrange and make swinging shaft 16 in the course of the work, can in the displacement that produces under the drive of shift fork 48 on the output shaft axis R-R direction, to have reduced the vibrations of swinging shaft 16, not make cutting process more stable.
When portable cutter 10 cuts work, the direction and the drive axis O-O that produce between eccentric part 46 and the shift fork 48 are perpendicular, this moment since shift fork 48 and swinging shaft 16 for being fixedly connected with, so that this moment, shift fork 48 was subject to frictional force perpendicular to drive axis O-O with swinging shaft 16 integral body, because output shaft axis R-R and the drive axis O-O of swinging shaft 16 are arranged in parallel, therefore the direction of described frictional force is vertical with output shaft axis R-R, therefore swinging shaft 16 can not be subject to along the frictional force of output shaft axis R-R bearing of trend, and it can not produced along the displacement of output shaft axis R-R bearing of trend.Realize thus working as portable cutter 10 in cutting the course of work, swinging shaft 16 only swings under the drive of transmission mechanism 18, and can not produce displacement on himself output shaft axis R-R direction, reduce greatly the vibrations that portable cutter 10 produces in the course of the work, improved operational comfort.In the present embodiment, the output shaft axis R-R of swinging shaft 16 and the drive axis O-O of driving shaft 44 are parallel to each other, and mutually vertical with described shift fork bearing of trend, and this moment, the vibrations of portable cutter 10 reached minimum, and it is best that operational comfort reaches.
Swinging shaft 16 is the instrument installation end 70 that saw blade 20 is installed along the end of output shaft axis R-R, the other end is provided with the second spring bearing 72, also is provided with the 3rd spring bearing 74 so that swinging shaft 16 can be by stable support between instrument installation end 70 and the second spring bearing 72.Shift fork 48 is connected between the second spring bearing 72 and the 3rd spring bearing 74 by installation portion 60, and the drive swinging shaft 16 that shift fork 48 can be stable is swung.
See also Fig. 9 and Figure 12, after swinging shaft 16 is mounted to supporting seat 78, the second spring bearing 72 and the 3rd spring bearing 74 can be respectively and the madial wall of the first perforate 86 of supporting seat 78 and the second perforate 88 interference fit mutually, thereby realize limiting the position of the second spring bearing 72 and the 3rd spring bearing 74, and then the position of realizing restriction swinging shaft 16, and nationality makes to realize sealing between the second host cavity 82 and the swinging shaft 16 and is connected by the second spring bearing 72 and the 3rd spring bearing 74 are installed, thereby it is inner to have avoided dust to enter described receiving space, and then has avoided pollution eccentric part 46 and shift fork 48.
It is polyhedron-shaped for adaptive saw blade 20 that instrument installation end 70 is.At instrument installation end 70 securing member 76 is installed also, is used for saw blade 20 is confined between securing member 76 and instrument installation end 70, thus to realize that saw blade 20 is mounted to portable cutter 10.In the present embodiment, instrument installation end 70 has screwed hole, and securing member 76 is joined with described screwed hole phase shape and had the end that exposes to described screwed hole, so that saw blade 20 is clamped between described end and the instrument installation end 70.And on securing member 76, also be arranged with packing ring 77, thereby effectively prevent from occurring between securing member 76 and the instrument installation end 70 becoming flexible, realize the firm saw blade 20 of installing.
The hunting frequency of swinging shaft 16 when work is more than or equal to 20000 times/minutes, and further its hunting frequency also can be arranged to so make portable cutter 10 have higher cutting efficiency greater than 30000 times/minutes.In the present embodiment, the rotating speed of swinging shaft 16 equals 20000 times/minutes, so when satisfying high cutting efficiency, makes portable cutter 10 have long service life.
See also Figure 14, saw blade 20 is installed on the swinging shaft 16, and together swing in company with swinging shaft 16, therefore work as the hunting frequency of swinging shaft 16 more than or equal to 20000 times/timesharing, the hunting frequency of saw blade 20 is too more than or equal to 20000 times/minutes, accordingly, when the hunting frequency of swinging shaft 16 greater than 30000 times/timesharing, the hunting frequency of saw blade 20 is also greater than 30000 times/minutes.In the present embodiment, the hunting frequency of saw blade 20 equals 20000 times/minutes.
Connecting portion 90 is writing board shape, the first side wall 92a and the second sidewall 92b that it has two relatively and extends along connecting portion 90 longitudinallies, and all adjacent with the first side wall 92a and the second sidewall 92b, and have the 3rd sidewall 92c of an installing hole 94.In the first side wall 92a and the second sidewall 92b position adjacent with the 3rd sidewall 92c respectively, form respectively first side 96a and Second Edge 96b.
The periphery that the 3rd sidewall 92c arranges installing hole 94 is the circular arc transition of the described installing hole 94 of semi-surrounding, and the center of circle of circular arc overlaps with the center of circle of installing hole 94, it can be saved portable cutter 10 and be the headspace of saw blade 20, and makes saw blade 20 more smooth and easy with cooperating of portable cutter 10 when swinging.
The shape of installing hole 94 can be polygon, circle and other shapes that is centrosymmetric, in the present embodiment, installing hole 94 be shaped as polygon, it can be joined with the polyhedron-shaped phase shape of instrument installation end 70, when realizing that 16 outputs of swinging shaft swing, can drive saw blade 20 and can not produce relative sliding, and can as required saw blade 20 be limited in a plurality of Difference angles.When saw blade 20 was assembled on the portable cutter 10, installing hole 94 was socketed on the swinging shaft 16, and by fastening the two the relative position relation of securing member 76.When portable cutter 10 work, saw blade 20 forms a swinging plane under swinging shaft 16 drives, described swinging plane is vertical with the output shaft axis R-R of described swinging shaft 16, be that described swinging plane parallels setting with described grip part lengthwise bearing of trend, so just the user carries out cutting work by grip part 28 promotion portable cutters 10.The equal vertical described swinging plane in the extension plane of the first side wall 92a and the second sidewall 92b in the present embodiment.
The direction of base portion 92 along first side 96a to Second Edge 96b extended, and protrudes connecting portion 90 from the second sidewall 92b away from the position of installing hole 94, and base portion 92 is for protruding connecting portion 90 part afterwards.Base portion 92 has cutting part along the longitudinally of connecting portion 90 away from a side of installing hole 94, and namely described cutting part is in the end of saw blade 20 away from the swinging shaft, and base portion 92 has the surface 98 with the cutting part adjacency.In the present embodiment, the base portion 92 only direction along first side 96a to Second Edge 96b extends, and cutting part is the sawtooth section 100 that some sawtooth form, and when cut workpiece, surface 98 is coplanar with described swinging plane.
In the present embodiment, base portion 92 namely along the constant width of its bearing of trend, so makes the stress intensity of base portion 92 better for evenly to extend connecting portion 90 from the second sidewall 92b, and is not easy fracture in the process of utilizing sawtooth section 100 cut workpiece.The described sawtooth of in the sawtooth section 100 each includes crown and tooth root, crown is along line of cut of formation arranged in a straight line, under the drive of swinging shaft 16, the crown that is arranged in a linear constantly swings cut workpiece, and there are better cutting efficiency, described tooth root to be used for described sawtooth is fixedly connected with base portion 92.
Swing cutting in order to adapt to portable cutter 10, be subject to the distance between the crown of the pendulum angle of portable cutter 10 and adjacent sawtooth, the distance that connecting portion must be able to be satisfied along the length of himself longitudinally make described saw-tooth wobble is greater than the crown distance of adjacent sawtooth, and concrete size no longer describes in detail as space is limited at this.
According to different use needs, base portion 92 can be arranged to different sizes along the length L of its bearing of trend with the width W of relative its bearing of trend, length L span such as base portion 92 can be 2 millimeters to 80 millimeters, wherein better length can be selected from 15 millimeters to 40 millimeters, and preferably length is selected from 20 to 35 millimeters.The width W span of base portion 92 can be 5 millimeters to 11 millimeters, and wherein better width can be selected from 7 millimeters, 8 millimeters and 9 millimeters, namely 7 millimeters to 9 millimeters.The saw blade 20 of choosing above-mentioned preferred length and width can make cut workpiece reach a better cutting effect.
Connecting portion 90 can be divided into two parts and form, and namely a part is provided with installing hole 94, and another part is provided with base portion 92.Connecting portion 90 has the segment thickness of installing hole 94 greater than the part that is provided with base portion 92, and adopt the modes such as welding, riveted joint to be fixedly connected with between two parts, so setting can be so that saw blade 20 processing and fabricatings, simultaneously also be arranged to different thickness according to the function and usage difference between connecting portion 90 zoness of different, make saw blade 20 have better stress intensity, and make it have better cutting effect.
According to different use needs, can be arranged to different angle δ between the line of cut of sawtooth section 100 and the first side wall 92a, the span of described angle δ can be 65 ° to 120 °, wherein better angle value can be selected from 80 ° to 110 °.Described angle δ chooses above-mentioned better angle value can make the cutting performance of saw blade 20 perform to preferable states.
In order to make base portion 92 more stable with the syndeton of connecting portion 90, make saw blade 20 in the cut workpiece process, the junction of base portion 92 and connecting portion 90 can fracture, can be arranged to the cambered surface transition back to the surface of sawtooth section 100 and the second sidewall 92b junction of connecting portion 90 at base portion 92, at this moment, the part of base portion 92 for stretching out connecting portion 90 after the described cambered surface transition.
In order to improve the security of saw blade 20 in the cutting curved surface process, connecting portion 90 does not arrange sawtooth with the end wall of cutting part 100 adjacency, preferably is plane layout.So when the user cuts work, if maloperation is stretched into inside workpiece with described end wall, the user just can't promote portable cutter 10 and cut forward this moment, when so having avoided the user to carry out the curved surface cutting, change cut direction and cause connecting portion 90 to be twisted off by workpiece, the part of further having avoided the twisting off harm users that flies out.
Certainly, be not used in the effective cutting length of cutting during curved surface in order to increase saw blade 20, also can away from the end face of installing hole 94 sawtooth be set at connecting portion 90, the sawtooth of connecting portion 90 and sawtooth section 100 sawtooth are arranged along straight line together.A certain position on the cut workpiece plane can an inclined-plane be set at connecting portion 90, and described inclined-plane can be arranged between installing hole 94 and connecting portion 90 and base portion 92 link positions when using separately for the ease of saw blade 20 simultaneously.Certainly, saw blade 20 can only have sawtooth section 100, and at connecting portion 90 sawtooth is not set, and does not have described inclined-plane.
Thereby saw blade 20 can cut out curved surface at workpiece by the portable cutter that the structure of conventional blade has been carried out improve the output swing that has realized installation saw blade 20, has expanded the function of traditional wobble cutting machine.Namely when the user uses saw blade 20 cut workpiece of the present invention, can only utilize base portion 92 to cut, because the width of base portion is narrower, and extend out from connecting portion one side of described saw blade, it is under the drive of described swinging shaft, can cut out at surface of the work the curved surface of arbitrary shape, bring facility for user's work and life, satisfy greatly user's needs.
See also Fig. 1, Figure 15 and Figure 16, portable cutter 10 is resisted against by supporting component 21 and carries out cutting work on the workpiece.Supporting component 21 comprises be used to the base plate 102 that is resisted against surface of the work, and is used for base plate 102 is connected to the coupling assembling 104 of portable cutter 10.
Be provided with the saw blade fluting 106 that extends along described long limit at base plate 102, can slot from saw blade for saw blade 20 and 106 stretch out and pass described abutment face and carry out cutting work.
Be provided with guidance set 108 at saw blade fluting 106 ends away from swinging shaft 16.Guidance set 108 is used to the swing process of saw blade 20 that guiding is provided, to reduce the vibrations of saw blade 20 in the process that swings cut workpiece.In the present embodiment, guidance set 33 comprises and is oppositely arranged on saw blade slot the first guide roller 108a and the second guide roller 108b of 106 both sides.When portable cutter 10 cut workpiece, saw blade 20 can be held between the first guide roller 108a and the second guide roller 108b, and when saw blade 20 cutting curved surface, can be resisted against on one of them roller (the first guide roller 108a or the second guide roller 108b), roller this moment (the first guide roller 108a or the second guide roller 108b) can rotate, do not hinder thereby can not consist of the oscillating motion of saw blade 20, so arrange, can be in the cutting curved surface process, prevent that saw blade 20 is offset, thereby improved greatly whole cutting accuracy, reduced simultaneously the risk of saw blade 20 because of the too violent fracture of vibrations.Preferably, sawtooth section 100 is closed in saw blade 20 and the first guide roller 108a or the contacted zone of the second guide roller 108b, and the distance of the described tooth root of region distance of described contact is greater than 1 millimeter and less than 20 millimeters, so arrange and make the guiding of guidance set 33 and damping effect better, and between described two guide rollers and described tooth root, reserved 1 millimeter distance, thereby realized effectively having avoided the installation because of guide roller to exist tolerance to cause the problem that produces wearing and tearing between guide roller and the described sawtooth.
The abutment face of base plate 102 is not limited to rectangle, and it can also be made into other shapes such as circle, triangle, other polygons etc.
Between base plate 102 and coupling assembling 104, be connected by locking mechanism, and locking mechanism is exercisable be in discharge described base plate can be with respect to the first state of swinging shaft adjusting position, and lock described base plate with respect to the second state of described swinging output shaft position, thereby realize the according to demand position of fixed base plate 102 of user.
In the present embodiment, described locking mechanism comprises and is arranged on base plate 102 back to the boss 110 on the surface of described abutment face, the lock-screw 114 that passes boss 110 and can be threaded mutually with coupling assembling 104, and the nut 115 corresponding with lock-screw 114.
In the present embodiment, the quantity of lock-screw 114 is two, thereby realizes the position of restriction base plate 102 that can be stable, and between lock-screw 114 and base plate 102 pad is set, to prevent lock-screw 114 damage base plates 102.
When the user need to use different saw blades to cut work, the position that needs regulating base board 102, so that guidance set 33 can adapt to every kind of size that saw blade is different, this moment, the user can loosen lock-screw 114, base plate 102 can slide to realize that with respect to lock-screw 114 base plate 102 can be along cut direction with respect to swinging shaft 16 adjusting positions by regulating fluting 112, and be described first state of described locking mechanism this moment; Regulate the position of complete base plate 102 as the user, and with lock-screw 114 lockings, base plate 102 realizes that with respect to swinging shaft 16 locked positions described locking mechanism is in described the second state at this moment.
Coupling assembling 104 comprises the bearing 116 that is connected with described lock-screw 114, and an assembly 118 that is used for being mounted to portable cutter 10.
Bearing 116 is mounted to the boss 110 of base plate 102, and bearing 116 has the guide plate that guiding is provided when moving for boss 110.In the present embodiment, described guide plate is two side plates 118 that are oppositely arranged on the bearing 116, and two side plates 120 lay respectively at a side of boss 110, realization is sandwiched in boss 110 between two side plates 120, and it is surperficial bonded to each other that side plate 120 and boss 110 are faced mutually, so realizes can carrying out stable guiding by two side plates 120 when regulating base board 102.
Between two side plates 120, be provided with connecting plate 122, be provided with the screw corresponding with lock-screw 114 at connecting plate 122, be used for making lock-screw 114 pass to be threaded mutually with nut 115 from described screw.
When portable cutter 10 cut workpiece, can be resisted against on the surface of the work by supporting component 21 saw blade 20 this moment cut workpiece under the drive of swinging shaft 16, and the described abutment face of the 3rd sidewall 92c vertical base plate 70 of saw blade 20.In the present embodiment, if the angle value scope of the line of cut of described abutment face and sawtooth section 100 is α, the angle of swinging shaft 16 output swing angles is β, when swinging shaft 16 is in β/2 pivot angle, the angle value of described abutment face and described line of cut angle is γ, then the maximum angle value of α is γ+β/2, and then the minimum angles value of α is γ-β/2.Wherein, the value of γ is selected from 80 ° to 100 °, and at this moment, portable cutter 10 has relatively preferably cutting effect, and preferably the value of γ is 90 °, can make portable cutter 10 reach best cutting effect.The value of β can be 2.8 °, 3.2 ° or 4 ° etc., and this moment is by calculating the scope that just can draw α, and such as γ being 80 ° and β when being 3.2 °, the span of α is 78.4 ° to 81.6 °; When γ is 90 ° and β when being 3.2 °, the span of α is 88.4 ° to 91.6 °, and all the other situations are enumerated no longer one by one at this.
In order to accelerate the radiating rate of saw blade 20 in the cutting course of work, can be at the housing 12 interior fans that arrange of portable cutter 10, and near the position of saw blades 20 air outlet towards saw blade 20 is set at housing 12, and between described fan and described air outlet, be formed with for the mobile air channel of air-flow, so arrange, so that described fan can be with moving air flow to flow to saw blade 20 by described air channel and air outlet, thereby can accelerate the cooling velocity of saw blade 20, so avoided the excess Temperature of saw blade 20 and ruptured, also avoided the user to contact saw blade 20 simultaneously and be burned.
See also Fig. 1 and Figure 18, in the present embodiment, circumferentially be provided with air outlet 124 along the output shaft axis R-R of swinging shaft 16 on the housing 12, and air outlet is towards the direction of the connecting portion 90 lengthwises extension of saw blade 20, so realize the surface through saw blade 20 that the air-flow that flows out from air outlet 124 can maximum area, realize that radiating effect is best.
Described fan is installed on the motor shaft of motor 14, it is the electric motor fan 40 of motor radiating, and in motor resettlement section 22 to the air channel that is provided with perforation between the air outlet 124, so that the air-flow that electric motor fan 40 produces can flow to air outlet 124 by described air channel, and flow to saw blade 20 from air outlet 124.In the present embodiment, motor resettlement section 22 arranges air channel entrance 126 along the described circumferential side wall side of drive axis O-O, and air channel entrance 126 closes on motor 14, so setting can realize that air-flow enters before the described air channel, at first can take away the heat that motor 14 courses of work produce, thereby realize that the air-flow that takes full advantage of electric motor fan 40 work generations is motor 14 and saw blade 20 heat radiations simultaneously.
See also Figure 18 and Figure 19, the air channel entrance 126 in described air channel is arranged on right half housing 37, and air outlet 124 is arranged on left half housing 35, therefore described air channel need to extend on left half housing 35 from the right side half housing 37, wherein said air channel is through supporting seat 78, the air-flow of flowing through in the described air channel this moment can cooperate eccentric part 46 heat that produces to take away with shift fork 48, thereby has realized being the transmission mechanism heat radiation.
In the present embodiment, the position of corresponding right half housing 37 and left half housing 35 is formed with the through hole 128 that runs through supporting seat 78 on supporting seat 78, this moment, nationality was by the air channel entrance 126 of the right side half housing 37 through hole 128 to supporting seat 78, arrive at last the air outlet 124 of left half housing 35, formed a unimpeded air channel, this moment, the air-flow of electric motor fan 40 generations at first can dispel the heat for motor 14, air-flow is after air channel entrance 126 enters described air channel immediately, the described through hole 128 of can flowing through, this moment, air-flow can will be taken away because of eccentric part 46 and shift fork 48 fricative heats on the supporting seat 78, last air-flow flows to saw blade 20 from air outlet 124, further be saw blade 20 heat radiations, thereby realize causing by described air channel is set the heat dispersion of portable cutter 10 to reach best.
When directly flowing through eccentric part 46 and shift fork 48 for fear of the air-flow in described air channel, its dust that carries consists of pollution to eccentric part 46 and shift fork 48, therefore through hole 128 is not communicated with described receiving space, but preferably the sidewall thickness between the two is less than 20 millimeters, and have better radiating effect to described receiving space this moment.Preferably, the thickness of described sidewall is less than or equal to 5 millimeters, such as 5 millimeters, 4 millimeters, 3 millimeters, 2 millimeters, 1 millimeter or 0.5 millimeter etc.
In order to increase the current rate that enters air channel entrance 126, electric motor fan 40 is designed to centrifugal fan, so cooperates air channel entrance 126 along the circumferential arrangement of motor resettlement section 22, and the flow velocity of air-flow in the described air channel is speeded, and then better radiating effect is arranged.Further, the direction internal diameter of the described circumferential side wall of motor resettlement section 22 along fresh air inlet 23 to air channel entrance 126 becomes greatly gradually, so arranges the air-flow velocity through described air channel is further increased, and it is best that radiating efficiency reaches.
See also 1, be provided with baffle plate 125 on left half housing 35, and baffle plate 125 is arranged on the circumferential position that swinging shaft 16 stretches out the part of housing 12, air outlet 124 is arranged on the baffle plate 125, realize that the air-flow that flows out blows to the cut direction of saw blade 20, in the time of for saw blade 20 heat radiation, also the chip that produces in the saw blade cutting process can be blown away, make cutting work that better sight line be arranged.
Certainly, those skilled in the art also may arrange a radiator fan that is independent of electric motor fan 40 housing 12 is interior, described radiator fan can directly arrange the position of corresponding air outlet 124, and so realization is fast from the air-flow velocity that air outlet 124 flows out, and realizes the heat radiation of saw blade 20 is reached best.Certainly those skilled in the art also may make other design alteration, but as long as its function and effect and the present invention is same or similar all should be covered by in the protection domain of the present invention.
See also Figure 20, the saw blade 130 of the portable cutter that provides for the second embodiment.Saw blade 130 comprises the connecting portion 134 with installing hole 132, and the base portion 138 that extends connecting portion 134 from the second sidewall 136b of connecting portion 134, is arranged on the sawtooth section 139 on the base portion 138.
The saw blade 20 that the function of saw blade 130 and structure and the first embodiment provide is basic identical, its difference is: connecting portion 134 is away from the end face of installing hole 132 horizontal range to installing hole 132 centers of circle, to the horizontal range in installing hole 132 centers of circle, namely connecting portion 134 protrudes base portion 138 away from an end level of installing hole 132 greater than any point on the base portion 138.When portable cutter passes through saw blade 130 at workpiece cutting curved surface, only have base portion 138 in the slit that workpiece cuts, to cut, and the part that connecting portion 134 protrudes can be blocked by workpiece planarization, thereby connecting portion 134 can't enter in the slit that workpiece is cut open, so arrange and to prevent that connecting portion 134 from entering in the slit of cutting, and then prevented connecting portion 134 from being applied the pressure of vertical described swinging plane direction by curved surface and saw blade 130 is damaged, simultaneously also can need to adjust angle by reminding user, make the projection of connecting portion 134 no longer contact surface of the work, safety is smooth and easy more to realize cutting process.
See also Figure 21, the saw blade 140 of the portable cutter that provides for the 3rd embodiment.Saw blade 140 comprises the connecting portion 144 with installing hole 142, and the base portion 148 that extends connecting portion 144 from the second sidewall 146b of connecting portion 144.
The saw blade 20 that the function of saw blade 140 and structure and the first embodiment provide is basic identical, and its difference is: the first side wall 146a of connecting portion 144 and connecting portion 144 are away from being the cambered surface transition between the end wall of installing hole 150.So arrange, can reduce the quality of saw blade 140, thereby in the process of cut workpiece, the vibrations of saw blade 140 are less, make cutting more accurate, and himself are not easy to be shaken damage.
See also Figure 22, the saw blade 152 of the portable cutter that provides for the 4th embodiment.Saw blade 152 comprises the connecting portion 156 with installing hole 154, and from the upper extended base portion 160 of the second sidewall 158b of connecting portion 156.
Certainly, if with two free ends of circular arc line of cut and the center of circle of himself be connected to form one fan-shaped, in the time of outside the center of circle of installing hole 154 is positioned at this sector region, be that the center of circle of installing hole 154 and the center of circle of arc line of cut do not coincide, at this moment, it is smaller that the maximum occurrences of described difference h can arrange, and such as less than 20 millimeters, concrete numerical value is decided according to the specific design scheme.So arrange and effectively to reduce the width of base portion 160, thereby be more prone to cut out curved surface.
Because the aspect factors such as structure setting and size; may exist not is that whole described lines all exist intersection point with base portion 160 back to the sidewall of sawtooth section 162; if but have the part of intersection point, and satisfying the situation of foregoing description, then all should be covered by in the protection domain of the present invention.
See also Figure 23, in order further to improve cutting efficiency, the sawtooth of sawtooth section 162 can tilt to extend with respect to base portion 160, and its bearing of trend is towards the first side 164 of connecting portion 156, and namely sawtooth extends along the direction opposite with the bearing of trend of base portion 160.If this moment, described portable cutter was equipped with the base plate that aforementioned embodiments is introduced, so arrange sawtooth towards, can also in cutting process, strain position relationship between base plate and the workpiece, make the two cooperation tightr, thereby can reduce the vibrations in the cutting process.
See also Figure 22, the effective cutting length when being not used in the cutting curved surface in order to increase saw blade 152, connecting portion 156 is provided with sawtooth away from the end face of installing hole 154, and the sawtooth of described sawtooth and sawtooth section 162 is arranged along same circular arc line.
See also Figure 24 and Figure 25, the portable cutter 166 that provides for fifth embodiment of the invention comprises housing 168, motor (not shown), transmission mechanism (not shown), swinging shaft 170, supporting component 172, securing member 174 and saw blade 176.
Motor is arranged in the body shell 178, and it rotates by motor shaft output.Transmission mechanism is positioned at body shell 178 and head capsule 180, and its rotation with motor output converts oscillating motion to, and drive swinging shaft 170 will swing output.Swinging shaft 170 is contained in the head capsule 180, and the one end is polyhedron-shaped and stretches out head capsule 180, and this end central area axially is provided with a screwed hole along swinging shaft 170, and this screwed hole is used for being threaded mutually with securing member 174.To be connected more firmly in order making between securing member 174 and the swinging shaft 170, to be arranged with packing ring 175 at securing member 174.
Supporting component 172 comprises connector 182 and base plate 184.When supporting component 172 is assembled to portable cutter 166, connector 182 will be sandwiched between saw blade 176 and the head capsule 180, and so setting can prevent effectively that connector 182 from coming off from head capsule 180, and base plate 184 provides support for saw blade 176 cut workpiece.
See also Figure 25 and Figure 26.Connector 182 is made by flexible material, has the first housing 186 and the second housing 188, and is formed at the circular port 190 between the first housing and the second housing.It can be set in head capsule 180 outsides, and is used for the position relationship between fixed support assembly 172 and the portable cutter 166.In the present embodiment, connector 182 is plastic products.
It is tightr for what can cooperate with head capsule 180 adopting flexible material to make connector 182.After connector 182 covers are connected to head capsule 180, just can overcome the tolerance of size by the elastic deformation of flexible material, connector 182 is cooperated closely with head capsule 180.Described flexible material can also be rubber, pliability metal etc. preferably; do not enumerate one by one at this as space is limited; but the content that discloses according to the present invention as long as the function of its realization and effect and described flexible material are same or similar, all should be covered by in the protection domain of the present invention.
The head capsule 10 of the first housing 186 and the second housing 188 and portable cutter 166 mutually shape is joined, namely when supporting component 172 is assembled on the portable cutter 166, it is connected on the head capsule of portable cutter by connector 182 covers, at this moment, connector 182 is between saw blade 176 and head capsule 180, and swinging shaft 170 stretches out saw blade 176 work that drive from circular port 190.Be provided with annular steel ring 192 at the aperture of circular port 190 sidewall, prevent that saw blade 176 from directly contacting and the hole wall that weares and teares with the hole wall of circular port 190 in the course of the work, thereby play the effect of protection connector 182.
In order better to limit the position of connector 182, can increase the frictional resistance between connector 182 and the housing 168, as towards the surface of portable cutter 166 skid resistant course being set at the first housing 186 and/or the second housing 188, such as rubber coating, rubber strip etc. is set perhaps.Certainly those skilled in the art can also limit the position relationship between connector 182 and the portable cutter 166 by other means, but need only the function of its realization and effect the present invention is same or similar all should be covered by in the protection domain of the present invention.
Be respectively arranged with screw hole 193 at the first housing 186 and the second housing 188 around the position of circular port 190, be used for being fixedly connected with base plate 184.Certainly, position and the quantity of screw hole 193 are not limited to foregoing description, it can arrange needs according to structure and be arranged on other positions, and quantity also can be arranged to three, four etc., as long as the position relationship between fixed connecting piece 182 and the base plate 184 firmly.
Can very easily supporting component 172 be mounted to portable cutter 166 by connector 182, be about to head capsule 180 outsides that connector 182 covers are received portable cutter 166, when needs are dismantled, at first securing member 174 is unloaded, just can together take off connector 182 together with saw blade 176 this moment from portable cutter 166, bring great convenience to the user.
See also Figure 25 and Figure 27.Base plate 184 comprises counterpart 194, against plate 196 and guidance set 198.
The region division that centers on through hole 200 at counterpart 194 has bottom plate screw hole 202.The quantity in bottom plate screw hole 202 and position are all corresponding with quantity and the position of the screw hole 192 of connector 182, and in the present embodiment, the quantity in bottom plate screw hole 202 is two, and its position is corresponding with the position of two screw holes 192 of connector 182 respectively.When being installed to connector 182 against plate 196, for locking the two position relationship by two screws 204.
Roughly be writing board shape against plate 196, its surface back to counterpart 194 is an abutment face, is used for when portable cutter 166 cut workpiece, be resisted against the surface of workpiece, make cutting operation more stable, and can reduce the vibrations in the cutting process, prevent from damaging saw blade 176 because of vibrations.Described abutment face roughly is rectangle, it has a pair of long sideline and pair of short edges line, when supporting component 172 is assembled on the portable cutter 166, the axis extended line of swinging shaft 170 is in the projection on the extension plane of described abutment face, vertical with described long sideline, and with described minor face line parallel.In two described minor face lines, minor face line and the swinging shaft 170 away from described swinging shaft is X at the projector distance of described abutment face relatively; The sawtooth of the axis of swinging shaft 170 and saw blade 176 is Y at the projector distance of described abutment face, and because the quantity of described sawtooth can be for a plurality of, so projector distance Y is that described axis and described sawtooth are in the maximal projection distance of described abutment face; In the present embodiment, projector distance X 〉=projector distance Y so arranges more stable, the reliable support of the assembly 172 that is supported in the time of can making saw blade 176 cut workpiece.Preferably, projector distance X 〉=40 millimeter so arrange and can further improve the stability of cutting.
Be provided with one along the fluting 204 that extends against plate 196 longitudinallies against plate 196 away from an end of counterpart 194, it is used for accommodating saw blade 176 when portable cutter 166 cut workpiece, makes saw blade 176 can pass fluting 204 cut workpiece.
In order to strengthen against the stress intensity of plate 196, can some gussets be set on the surface that counterpart 194 is set against plate 196.
Guidance set 198 comprises fixed head 206 and two rollers 208.
Abutment face against plate 196 is not limited to rectangle, and it can also be made into other shapes such as circle, triangle, other polygons etc.Accordingly, also can change accordingly against the shape of plate 196, counterpart 194 and guidance set 198, as long as its technical spirit is identical with the present invention or its change belongs to those skilled in the art's common practise, all should be covered by in the protection domain of the present invention.
See also Figure 28 to Figure 30, the supporting component 212 of the portable cutter that provides for sixth embodiment of the invention.Supporting component 212 comprises having connector 214 and base plate 216.
The functional structure of the supporting component 172 that supporting component 212 and the 5th embodiment provide is basic identical, its difference is: base plate 216 comprises the installing plate 218 that is connected with connector 214, be assembled on the connector against plate 220, and be installed in guidance set 222 on the plate 220.
Installing plate 218 adopts plastic material to make, and it is rectangular shape, and has upper surface 224a and lower surface 224b.Upper surface 224a is connected with connector 214 along an end of installing plate 218 longitudinallies, and in the present embodiment, installing plate 218 adopts integrative-structure to make with connector 214.Be provided with some screw holes at upper surface 224a, be used for position relationship fixing by screw and against plate 220.Upper surface 224a is provided with a fluting 226 along installing plate 218 longitudinallies away from an end of connector 214, and slots and 226 extend along described longitudinally.Fluting 226 has notch 226a, and the sidewall of notch 226a formation depression, is that guidance set 222 is reserved certain spaces.When fitting together when installing plate 218 and against plate 220, lower surface 224b is with matched against plate 220.
Make for metal material against plate 220, it is rectangular shape, and has for the abutment face 220a against workpiece.Surperficial 220b against plate 220 back to abutment face 220a is used for connecting with the lower surface 224b of installing plate 218.Surface 220b arranges the screw hole corresponding with the screw hole of installing plate 218, thereby realizes can fixing the two position relationship by screw against between plate 220 and the installing plate 218.In the present embodiment, adopt corrosion resistant plate to make against plate 220, have good wearability thereby make against plate 220.
Position against the fluting 226 of plate 220 corresponding installing plates 218 is provided with against plate fluting 228, and fluting 226 and run through base plate 216 against plate fluting 228 makes the saw blade of portable cutter can pass the fluting cut workpiece.
Can take some measures; make installing plate 218 and more firm against the position relationship between the plate 220; and prevent the situation of wearing and tearing installing plate 218; in the present embodiment; edge against the surperficial 220b of plate 220 is provided with the flanging that bends towards installing plate 218; thereby effectively protected installing plate 218, and can play further spacing effect.
Guidance set 222 is arranged at against the notch place of plate fluting 228, and when fitting together against plate 220 and installing plate 218, guidance set 222 stretches out the upper surface 224a of installing plate 218 from 226 the notch 226a of slotting.Concrete function structure and the guidance set 198 in the 5th embodiment of guidance set 222 are basic identical, do not repeat as space is limited to introduce at this.
In the present embodiment, supporting component 212 simple in structure makes overall structure compacter, and whole stress intensity had significantly and improve, and makes support more reliable and more stable.
See also Figure 31 and Figure 32, the supporting component 230 of the portable cutter that provides for seventh embodiment of the invention.
The functional structure of the supporting component 212 that supporting component 230 and the 6th embodiment provide is basic identical, its difference is: the side against plate 232 towards workpiece of base plate 230, have the first plane 232a and the second plane 232c, wherein the second plane 232c is used for against workpiece, and the extension Plane intersects of the first plane 232a and the second plane 232c, thus make butting section 233 that fluting is set and part that guidance set 234 is installed towards the direction perk away from the first plane 232a.The impact that can effectively reduce to shake on cutting so is set, be that saw blade can pass described fluting, then cut workpiece, so the position vibrating that saw blade contacts with workpiece is the most violent, in the present embodiment, against plate 232 only by the first plane 232a against workpiece, and the second plane 232c can be towards the direction perk away from workpiece, can not come in contact with the most violent zone of vibrations thereby make against plate 232, thereby the vibrations of base plate 230 have been reduced, and then reduced the vibrations that passed to portable cutter by base plate 230, improved greatly user's comfort.
Supporting component and saw blade that aforementioned a plurality of embodiment is introduced, can be separately as a cover accessory product, owing to having adopted the mode of socket that base plate is mounted on the portable cutter, therefore do not need the housing of portable cutter is improved, have widely applicability, brought facility to the user.Certainly, the saw blade that is used in conjunction with described base plate is not limited to the structure of aforementioned introduction, can also adopt other saw blade, such as saw blade, straight blade etc., do not enumerate one by one at this, just can use as long as according to actual needs described base plate is carried out simple modification.
Further, supporting component in the 5th embodiment to the seven embodiments can adopt also that supporting component has the structure of the base plate of position adjustable in the first embodiment, the supporting component of introducing when aforementioned a plurality of embodiments thus and saw blade are during separately as accessory product, adjustable by the base plate position that makes supporting component, thus make the supporting component can adaptive a greater variety of saw blades.
What it may occur to persons skilled in the art that is, the concrete structure of the portable cutter among the present invention can have a lot of versions, but the technical characteristics of the used technical solution and the present invention are same or similar, all should be covered by in the protection domain of the present invention.
Claims (11)
1. portable cutter comprises:
Housing;
Part is stretched out the swinging shaft of described housing and output swing;
Be housed in the motor in the described housing, and output is rotated;
The rotation of described motor is converted to the transmission mechanism of the swing of described swinging shaft;
Be installed in the saw blade that swings cutting on the described swinging shaft, described saw blade forms swinging plane;
It is characterized in that:
Described portable cutter also comprises and is connected and is used for supporting component against workpiece with described housing, and described supporting component has the abutment face against workpiece, and the axis of described swinging shaft is parallel with described abutment face.
2. portable cutter according to claim 1, it is characterized in that: described supporting component has the base plate that described abutment face is set, and described base plate is with respect to the position-adjustable of described swinging shaft.
3. portable cutter according to claim 2, it is characterized in that: described swinging plane is vertical with described abutment face, make described swinging plane at the straight line that is projected as of described abutment face, described base plate only can be along the bearing of trend of described straight line with respect to described swinging shaft adjusting position.
4. portable cutter according to claim 1 is characterized in that: supporting component comprises for the base plate against workpiece, and described base plate arranges the guide roller of promising described saw blade guiding.
5. portable cutter according to claim 4, it is characterized in that: described base plate has the fluting that stretches out for described saw blade, the quantity of described guide roller is two, and being arranged on described fluting along the end of described swinging plane away from described swinging shaft, described saw blade is between two described guide rollers.
6. portable cutter according to claim 5, it is characterized in that: described saw blade is provided with sawtooth away from the end of described swinging shaft, described sawtooth comprises crown and the tooth root for cutting, the zone that described saw blade contacts with described guide roller extremely the distance of described tooth root greater than 1 millimeter and less than 20 millimeters.
7. portable cutter according to claim 1, it is characterized in that: be provided with in described portable cutter and accommodate the supporting seat that supports described transmission mechanism, described housing, described motor and described supporting component all directly are fixedly connected with described supporting seat.
8. portable cutter according to claim 2, it is characterized in that: described base plate has connector, and described housing has the head capsule that described swinging shaft is installed, and described connector is socketed on the described head capsule, and joins with described head capsule phase shape.
9. described portable cutter according to claim 8, it is characterized in that: described swinging shaft is equipped with saw blade, and described connector is sandwiched between described saw blade and the described head capsule.
10. described portable cutter according to claim 9, it is characterized in that: described connector adopts flexible material to make.
11. described portable cutter is characterized in that: between described connector and the described head capsule skid resistant course is set according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110237820 CN102371394B (en) | 2010-08-18 | 2011-08-18 | Portable cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010264478 | 2010-08-18 | ||
| CN201010264478.7 | 2010-08-18 | ||
| CN 201110237820 CN102371394B (en) | 2010-08-18 | 2011-08-18 | Portable cutting machine |
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| Publication Number | Publication Date |
|---|---|
| CN102371394A CN102371394A (en) | 2012-03-14 |
| CN102371394B true CN102371394B (en) | 2013-03-06 |
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| CN 201110237820 Active CN102371394B (en) | 2010-08-18 | 2011-08-18 | Portable cutting machine |
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| CN (1) | CN102371394B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3213847A1 (en) | 2016-03-04 | 2017-09-06 | Wolfcraft GmbH | Oscillation tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017123075A1 (en) * | 2016-10-07 | 2018-04-12 | Gustav Klauke Gmbh | work tool |
| CN110732726B (en) * | 2018-07-20 | 2022-02-11 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
| CN109396545A (en) * | 2018-11-30 | 2019-03-01 | 张家港市创基机械设备制造有限公司 | Electric swing saw |
| CN113927093A (en) * | 2020-06-29 | 2022-01-14 | 工机控股株式会社 | Cutting processing machine |
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| CN1559730A (en) * | 2004-02-25 | 2005-01-05 | 苏州宝时得电动工具有限公司 | Reciprocating rod balancing mechanism of reciprocating type electric power tool |
| CN2877933Y (en) * | 2006-04-04 | 2007-03-14 | 应凌云 | Portable type reciprocating saw |
| CN101284320A (en) * | 2007-04-13 | 2008-10-15 | 苏州宝时得电动工具有限公司 | Reciprocating cutting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2380159A (en) * | 2001-09-29 | 2003-04-02 | Black & Decker Inc | Power tool |
| JP2007196409A (en) * | 2006-01-24 | 2007-08-09 | Ryobi Ltd | Electric cutting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1559730A (en) * | 2004-02-25 | 2005-01-05 | 苏州宝时得电动工具有限公司 | Reciprocating rod balancing mechanism of reciprocating type electric power tool |
| CN2877933Y (en) * | 2006-04-04 | 2007-03-14 | 应凌云 | Portable type reciprocating saw |
| CN101284320A (en) * | 2007-04-13 | 2008-10-15 | 苏州宝时得电动工具有限公司 | Reciprocating cutting tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3213847A1 (en) | 2016-03-04 | 2017-09-06 | Wolfcraft GmbH | Oscillation tool |
| DE102016103903A1 (en) | 2016-03-04 | 2017-09-07 | Wolfcraft Gmbh | oscillating tool |
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| CN102371394A (en) | 2012-03-14 |
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